An automatic part screening device

Abstract

The utility model provides a kind of automatic screening device of parts, including screening device, and screening device includes upper layer cavity, and the bottom surface of upper layer cavity is inclined to be inclined surface, for making pipe fitting under gravity downward roll. The lowest place of upper layer cavity is equipped with discharge chute. The downside of upper layer cavity is equipped with screening chamber, and screening chamber is equipped with length screening groove, and length screening groove is equipped in screening chamber far from one end of discharge chute. The bottom surface of screening chamber is inclined to be inclined surface from discharge chute to length screening groove. The downside of screening chamber is equipped with collection groove, and collection groove is used to collect unqualified pipe fitting. The end far from discharge chute of screening chamber is equipped with qualified product taking area, and qualified product taking area is extended and is equipped in length screening groove downstream for the bottom surface of screening chamber. Qualified product taking area is equipped with horizontal platform of fence. The utility model realizes length screening to pipe fitting by mechanical structure using pipe fitting gravity, saves manpower cost, reduces equipment cost and energy consumption.

Description

Technical Field

[0001] This utility model belongs to the technical field of screening devices, specifically relating to an automatic parts screening device. Background Technology

[0002] Tubular components are fundamental elements widely used in industrial production, and 100% screening of these components is a crucial step in ensuring product quality. Traditional screening methods mainly include manual screening and CCD image screening. Manual screening involves operators using calipers, micrometers, ring gauges, and other measuring tools to manually measure the length of parts. This method is inefficient, difficult to match the pace of modern high-volume, high-turnover production lines, and has high labor costs. Furthermore, manual measurement is subject to subjective errors and poor measurement consistency. While CCD image technology can meet the requirements in terms of measurement speed and accuracy, the equipment investment cost is high. For many companies, the added value of their products may not be sufficient to support such a high investment, resulting in an unreasonable ratio of quality investment to product sales revenue, making large-scale promotion difficult.

[0003] Therefore, the above problems urgently need to be solved. Utility Model Content

[0004] Purpose of the utility model: In order to overcome the above shortcomings, this utility model provides an automatic parts screening device, which is equipped with multiple inclined planes and uses the gravity of the pipes to screen the length of the pipes, thereby saving labor costs and reducing equipment costs and energy consumption.

[0005] Technical Solution: To achieve the above objectives, this utility model provides an automatic parts sorting device, including a sorting device. The sorting device includes an upper cavity with an inclined bottom surface for allowing the tubing to roll downwards under gravity. A feeding trough is provided at the lowest point of the upper cavity. A sorting chamber is provided on the lower side of the upper cavity, and the sorting chamber has a length sorting trough located at the end of the sorting chamber away from the feeding trough. The bottom surface of the sorting chamber is an inclined surface extending from the feeding trough towards the length sorting trough. A collection trough is provided on the lower side of the sorting chamber for collecting unqualified tubing. A qualified product collection area is provided at the end of the sorting chamber away from the feeding trough, extending from the bottom surface of the sorting chamber and located downstream of the length sorting trough. The qualified product collection area is a horizontal platform with a railing.

[0006] Traditional pipe screening typically relies on CCD imaging technology and actuators (such as electric motors) to perform the screening. This invention utilizes the gravity of the pipes through a mechanical structure to achieve length screening, saving labor costs and reducing equipment costs and energy consumption. In operation, the pipes are placed in the upper cavity. Under gravity, they roll along the bottom of the upper cavity towards the feed chute and fall into the screening chamber. They then roll along the bottom of the screening chamber towards the length screening chute, which screens the pipes. Unqualified pipes fall into the collection chute, while qualified pipes pass through the length screening chute into the qualified product collection area, where they are retrieved by the operator.

[0007] Furthermore, in the aforementioned automatic parts sorting device, the length of the length sorting groove is equal to the minimum allowable length of the pipe fitting. When the length of the pipe fitting is shorter than the minimum allowable length, the pipe fitting falls from the length sorting groove into the collection groove.

[0008] Furthermore, in the aforementioned automatic parts sorting device, a guide tightening zone is provided between the feeding trough and the length sorting trough. The guide tightening zone is designed as a channel that is wide at first and then narrows from the feeding trough to the length sorting trough. As the pipe rolls from the feeding trough to the length sorting trough, the guide tightening zone restricts the pipe, gradually adjusting it so that its axial direction is consistent with the length direction of the length sorting trough.

[0009] Furthermore, in the aforementioned automatic parts sorting device, the guide tightening area includes two elastic plates, located on both sides of the guide tightening area. One end of each elastic plate is hinged to the side wall of the sorting device via a pin, and the ends of the two elastic plates away from the pins are respectively located at both ends of the length sorting groove. A torsion spring is sleeved on the pin, and the extended arms at both ends of the torsion spring abut against the elastic plate and the side wall of the sorting device, respectively. The torsion spring creates an angle between the elastic plate and the sorting device. The torsion spring is preferably made of metal. When the pipe enters the guide tightening zone, it rolls and comes into contact with the elastic plate. The elastic plate applies force, gradually correcting the axial position of the pipe as it rolls along the plate, aligning its axis with the length direction of the length screening groove. Simultaneously, the torsion spring, compressed by the elastic plate, generates a rebound force, ensuring the plate maintains slight contact with the pipe, preventing further skewing during rolling and guaranteeing the accuracy of subsequent length screening. When the pipe has completely passed through the guide tightening zone and entered the length screening groove, if its length is shorter than the minimum allowable length, its two ends cannot be simultaneously supported on the bottom surface of the screening chamber, and it will fall from the length screening groove into the collection groove below. If the pipe length meets the requirements, its two ends will be supported on the bottom surface of the screening chamber on both sides of the length screening groove, continuing to roll along the inclined bottom surface to the qualified product collection area. The side walls of the screening device described above are the side walls of the screening device along both sides of the guide tightening zone.

[0010] Furthermore, in the aforementioned automatic parts screening device, a limiting rod is connected to one end of the elastic plate near the length screening groove. One end of the limiting rod is connected to the elastic plate, and the other end of the limiting rod away from the elastic plate passes through the side wall of the screening device. The limiting rod is slidably connected to the waist-shaped through hole provided in the side wall of the screening device. The end of the limiting rod away from the elastic plate is provided with an external thread, and a hand-tightening nut is threadedly connected to the other end of the limiting rod away from the elastic plate.

[0011] The limiting rod, in conjunction with the hand-tightening nut, adjusts the angle of the elastic plates to ensure the spacing between them matches the length of the screening trough. Specifically, a torsion spring applies torque to the elastic plates away from the side wall of the screening device, causing the hand-tightening nut to abut against the side wall. The operator tightens the hand-tightening nut, changing the distance between it and the elastic plates, thus adjusting the distance between the elastic plates and the side wall. The distance between the two elastic plates is then 0.9-1.0 times the length of the screening trough, meeting the guiding and tightening requirements of the pipe fittings. During screening, the elastic plates are compressed, the angle between the elastic plates and the side wall decreases, the torsion spring undergoes elastic deformation, and the hand-tightening nut separates from the side wall, allowing the elastic plates to accommodate pipe fittings of different lengths.

[0012] Furthermore, in the aforementioned automatic parts sorting device, a material distribution channel is provided on the lower side of the feeding trough. The material distribution channel is designed to allow only a single pipe to pass through. The material distribution channel allows only a single pipe to pass through, adjusting the posture of the pipe to enter the sorting chamber and preventing pipe stacking. At the same time, combined with the guide tightening area, the pipes reach the length sorting groove one by one, and the length direction of the pipe is exactly aligned with the length direction of the length sorting groove.

[0013] The material distribution channel includes a folded vertical plate formed by bending the bottom surface of the upper cavity and the right side wall of the screening device adjacent to the discharge trough. The distance between the folded vertical plate and the right side wall is set to 1.1-1.2 times the diameter of the pipe fitting, and the distance between the bottom surface of the folded vertical plate and the bottom surface of the screening chamber is also set to 1.1-1.2 times the diameter of the pipe fitting, forming a channel that allows only a single pipe fitting to pass through. The folded vertical plate and the side wall of the screening device restrict the pipe fitting's drop path, preventing it from deflecting during the fall. The distance between the bottom surface of the folded vertical plate and the bottom surface of the screening chamber also restricts the pipe fitting's movement upon entering the screening chamber, ensuring the pipe fitting's posture upon entering the screening chamber and guaranteeing screening stability.

[0014] Furthermore, in the aforementioned automatic parts sorting device, the bottom surface of the collection tank is designed as an inclined surface that slopes from the length sorting tank to the lower material trough. Defective pipe fittings fall into the collection tank and roll and stack along the ground of the collection tank on the side away from the length sorting tank, thereby increasing the number of parts collected in the collection tank.

[0015] Furthermore, in the aforementioned automatic parts sorting device, ventilation holes are provided on the side wall of the collection tank. These ventilation holes are arranged in an array along the side wall of the collection tank. This ventilation hole design improves airflow within the collection tank and prevents the pipes from getting damp.

[0016] Furthermore, in the aforementioned automatic parts sorting device, the sorting device is manufactured using 3D printing. This achieves seamless splicing of the upper cavity, sorting chamber, and collection tank, avoiding stress concentration problems caused by traditional welding processes, ensuring smooth rolling of the components, and ensuring the stability of the sorting process.

[0017] As can be seen from the above technical solution, this utility model has the following beneficial effects: The automatic parts screening device of this utility model, through the inclined design of multiple cavities, relies on the gravity of the pipe itself to achieve the entire process of rolling, guiding, screening, and collecting, without the need for an additional power source, greatly reducing equipment operating costs and energy consumption. At the same time, it avoids downtime caused by electronic component failures, improving the reliability and stability of the device. The single-output distribution channel and guiding tightening zone ensure that when the pipe reaches the length screening groove, its length direction is exactly aligned with the length direction of the length screening groove. This ensures that pipes shorter than the minimum allowable length can accurately fall into the collection groove, while pipes meeting the length requirements smoothly pass through the length screening groove along their length direction and enter the qualified product collection area. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the automatic parts sorting device of this utility model; Figure 2 This is a schematic diagram showing the status of the pipe fittings in the automatic parts sorting device of this utility model; Figure 3 for Figure 2 The sectional view shown is along line AA. Figure 4 As shown Figure 3 A magnified view of a portion of the image.

[0019] In the diagram: 1. Upper cavity, 11. Feed trough, 12. Guide and tightening area, 13. Distribution channel, 131. Folded edge vertical plate, 132. Side wall, 2. Screening chamber, 21. Length screening trough, 3. Collection trough, 31. Ventilation hole, 4. Qualified product collection area. Detailed Implementation

[0020] Example 1 like Figure 1-2An automatic parts sorting device is shown, comprising a sorting unit, an upper cavity 1, the bottom surface of which is an inclined plane for allowing pipe fittings to roll downwards under gravity. A feeding trough 11 is located at the lowest point of the upper cavity 1. A sorting chamber 2 is located below the upper cavity 1, and the sorting chamber 2 has a length sorting trough 21 located at the end of the sorting chamber 2 away from the feeding trough 11. The bottom surface of the sorting chamber 2 is an inclined plane extending from the feeding trough 11 towards the length sorting trough 21. A collection trough 3 is located below the sorting chamber 2 for collecting defective pipe fittings. A qualified product collection area 4 is located at the end of the sorting chamber 2 away from the feeding trough 11, extending from the bottom surface of the sorting chamber 2 and located downstream of the length sorting trough 21. The qualified product collection area 4 is a horizontal platform with a railing.

[0021] In this embodiment, the length of the length screening groove 21 is equal to the minimum allowable length of the pipe fitting. When the length of the pipe fitting is shorter than the minimum allowable length, the pipe fitting falls from the length screening groove 21 into the collection groove 3.

[0022] In this embodiment, a guide tightening zone 12 is provided between the feeding trough 11 and the length screening trough 21. The guide tightening zone 12 is configured as a channel that is wide at first and then narrows from the feeding trough 11 to the length screening trough 21. As the pipe rolls from the feeding trough 11 to the length screening trough 21, the guide tightening zone 12 restricts the pipe, gradually adjusting it so that its axial direction is consistent with the length direction of the length screening trough 21.

[0023] like Figure 3-4 The automatic parts sorting device shown includes a guide tightening zone 12 comprising two elastic plates 121. The elastic plates 121 are located on both sides of the guide tightening zone 12. One end of each elastic plate 121 is hinged to the side wall of the sorting device via a pin. The ends of the two elastic plates 121 away from the pins are respectively located at both ends of the length sorting groove 21. A torsion spring 122 is sleeved on the pin. The extended arms at both ends of the torsion spring 122 abut against the elastic plate 121 and the side wall of the sorting device, respectively. The torsion spring 122 maintains an angle between the elastic plate 121 and the side wall of the sorting device. The side wall of the sorting device is the side wall of the sorting device along both sides of the guide tightening zone 12. The elastic plate 121 is preferably an elastic arc-shaped plate, and the material is preferably polycarbonate.

[0024] In this embodiment, a limiting rod 123 is connected to one end of the elastic plate 121 near the length screening groove 21. One end of the limiting rod 123 is connected to the elastic plate 121, and the other end of the limiting rod 123 away from the elastic plate 121 passes through the side wall of the screening device. The limiting rod 123 is slidably connected in the waist-shaped through hole provided in the side wall of the screening device. The end of the limiting rod 123 away from the elastic plate 121 is provided with an external thread, and a hand-tightening nut 124 is threadedly connected to the other end of the limiting rod 123 away from the elastic plate 121.

[0025] The limiting rod 123 engages with the hand-tightening nut 124 to adjust the angle of the elastic plate 121, ensuring the spacing between the elastic plates 121 matches the length of the screening groove 21. Specifically, the torsion spring 122 applies a torque away from the side wall of the screening device to the elastic plate 121, causing the hand-tightening nut 124 to abut against the side wall of the screening device. The operator tightens the hand-tightening nut 124, changing the spacing between the hand-tightening nut 124 and the elastic plate 121, thereby adjusting the spacing between the elastic plate 121 and the side wall of the screening device. The spacing between the two elastic plates 121 is 0.9-1.0 times the length of the screening groove 21, meeting the guiding and tightening requirements of the pipe fittings. During the screening process, the elastic plate 121 is compressed, the angle between the elastic plate 121 and the side wall of the screening device decreases, the torsion spring 122 undergoes elastic deformation, and the hand-tightening nut 124 separates from the side wall of the screening device, allowing the elastic plate 121 to accommodate pipe fittings of different lengths.

[0026] In this embodiment, a material distribution channel 13 is provided on the lower side of the feeding trough 11. The material distribution channel 13 is designed to allow only a single pipe to pass through. The material distribution channel 13 allows only a single pipe to pass through, adjusting the posture of the pipe to enter the screening chamber 2, avoiding pipe stacking. At the same time, combined with the guide tightening area 12, the pipes reach the length screening groove 21 one by one, and the length direction of the pipe is exactly aligned with the length direction of the length screening groove 21.

[0027] In this embodiment, the material distribution channel 13 includes a folded vertical plate 131 formed by bending the bottom surface of the upper cavity 1 and a right side wall 132 of the screening device. The distance between the folded vertical plate 131 and the right side wall 132 is set to 1.1-1.2 times the diameter of the pipe, and the distance between the bottom surface of the folded vertical plate 131 and the bottom surface of the screening chamber 2 is set to 1.1-1.2 times the diameter of the pipe, forming a channel that allows only a single pipe to pass through. The folded vertical plate 131 and the right side wall 132 of the screening device restrict the path of the pipe falling, preventing the pipe from deflecting during the fall. The distance between the bottom surface of the folded vertical plate 131 and the bottom surface of the screening chamber 2 is limited, preventing the pipe from jumping when entering the screening chamber 2, ensuring the posture of the pipe when entering the screening chamber, and ensuring screening stability.

[0028] In this embodiment, the bottom surface of the collection tank 3 is designed as an inclined surface that slopes from the length screening tank 21 to the material trough 11. Defective pipe fittings fall into the collection tank 3 and roll and stack along the ground of the collection tank 3 on the side away from the length screening tank 21, thereby increasing the number of pipe fittings collected by the collection tank 3.

[0029] In this embodiment, the side wall of the collection tank 3 is provided with ventilation holes 31. The ventilation holes 31 are arranged in an array along the side wall of the collection tank 3. The design of the ventilation holes 31 can improve air circulation in the collection tank 3 and prevent the pipes from getting damp. The collection tank 3 is provided with an openable door on the side near the discharge trough 11 to facilitate the removal of unqualified pipes.

[0030] In use, the pipe is placed in the upper cavity 1. Under the influence of gravity, the pipe rolls along the bottom of the upper cavity 1 towards the lower trough 11 and then falls from the lower trough 11 into the screening chamber 2 through the distribution channel 13. During the process of passing through the distribution channel 13, the folded edge vertical plate 131 and the right side wall 132 of the screening device jointly restrict the posture of the pipe. The pipe falling into the screening chamber 2 through the distribution channel 13 rolls along the bottom of the screening chamber 2 towards the length screening groove 21. During this process, the pipe passes through the guide tightening area 12, which adjusts the posture of the pipe. Specifically, when the pipe enters the guide tightening zone 12, as the pipe rolls and comes into contact with the elastic plate 121, it rolls along the elastic plate 121. The elastic plate 121 gradually corrects the axial position of the pipe, making its axial direction consistent with the length direction of the length screening groove. At the same time, the torsion spring 122 is compressed by the elastic plate 121 and generates a rebound force, ensuring that the elastic plate 121 always maintains a slight contact with the pipe, preventing the pipe from deviating again during rolling and ensuring the accuracy of subsequent length screening. When the pipe completely passes through the guide tightening zone 12 and enters the length screening groove 21, if the length of the pipe is shorter than the minimum allowable length, its two ends cannot be simultaneously supported on the bottom surface of the screening chamber 2, and it will fall from the length screening groove 21 into the collection groove 3 below. If the length of the pipe meets the requirements, its two ends will be supported on the bottom surface of the screening chamber 2 on both sides of the length screening groove 21, and it will continue to roll along the inclined bottom surface to the qualified product collection area 4, where it will be picked up by the operator.

[0031] Example 2 The difference between this embodiment and Embodiment 1 is that the screening device is manufactured by 3D printing, which achieves seamless splicing of the upper cavity, screening chamber and collection tank, avoiding the stress concentration problem caused by traditional welding process, ensuring smooth rolling of the pipes and ensuring the stability of screening.

[0032] The above embodiments are exemplary and are intended to illustrate the technical concept and features of this utility model, so that those skilled in the art can understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. An automatic parts sorting device, characterized in that: The device includes a screening device, which includes an upper cavity (1) with an inclined bottom surface for rolling the pipe fittings downwards under gravity. The upper cavity (1) has a feeding trough (11) at its lowest point. The upper cavity (1) has a screening chamber (2) on its lower side, which has a length screening trough (21) located at the end of the screening chamber (2) away from the feeding trough (11). The bottom surface of the screening chamber (2) is an inclined surface that slopes from the feeding trough (11) to the length screening trough (21). The screening chamber (2) has a collection trough (3) on its lower side for collecting unqualified pipe fittings. The screening chamber (2) has a qualified product collection area (4) at the end away from the feeding trough (11), which extends from the bottom surface of the screening chamber (2) and is located downstream of the length screening trough (21).

2. The automatic parts sorting device according to claim 1, characterized in that: The length of the length screening groove (21) is equal to the minimum allowable length of the pipe fitting.

3. The automatic parts sorting device according to claim 1, characterized in that: A guide tightening area (12) is provided between the feeding trough (11) and the length screening trough (21). The guide tightening area (12) is configured as a channel that is wide at first and then narrows from the feeding trough (11) to the length screening trough (21).

4. The automatic parts sorting device according to claim 3, characterized in that: The guide tightening area (12) includes an elastic plate (121), and there are two elastic plates (121). The elastic plates (121) are located on both sides of the guide tightening area (12). One end of the elastic plate (121) is hinged to the side wall of the screening device by a pin. The ends of the two elastic plates (121) away from the pin are respectively located at both ends of the length screening groove (21). The pin is sleeved with a torsion spring (122), and the extension arms at both ends of the torsion spring (122) abut against the elastic plate (121) and the side wall of the screening device, respectively.

5. The automatic parts sorting device according to claim 4, characterized in that: The elastic plate (121) is connected to a limiting rod (123) at one end near the length screening groove (21). One end of the limiting rod (123) is connected to the elastic plate (121), and the end of the limiting rod (123) away from the elastic plate (121) passes through the side wall of the screening device. The limiting rod (123) is slidably connected in the waist-shaped through hole provided in the side wall of the screening device. The end of the limiting rod (123) away from the elastic plate (121) is provided with an external thread, and the end of the limiting rod (123) away from the elastic plate (121) is threaded with a hand-tightening nut (124).

6. The automatic parts sorting device according to claim 1, characterized in that: The material feeding trough (11) is provided with a material distribution channel (13) on its lower side. The material distribution channel (13) is designed to allow only a single pipe to pass through.

7. The automatic parts sorting device according to claim 6, characterized in that: The material distribution channel (13) includes a folded vertical plate (131) formed by bending the bottom surface of the upper cavity (1) and the right side wall (132) of the screening device adjacent to the feeding trough (11); the distance between the folded vertical plate (131) and the right side wall (132) is set to 1.1-1.2 times the diameter of the pipe; the distance between the bottom surface of the folded vertical plate (131) and the bottom surface of the screening chamber (2) is set to 1.1-1.2 times the diameter of the pipe.

8. The automatic parts sorting device according to claim 1, characterized in that: The bottom surface of the collection tank (3) is set as an inclined surface that slopes from the length screening tank (21) to the material tank (11).

9. The automatic parts sorting device according to claim 1, characterized in that: The side wall of the collection tank (3) is provided with ventilation holes (31); the ventilation holes (31) are arranged in an array along the side wall of the collection tank (3).

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