A screw feeding mechanism for workpiece assembly

Abstract

A workpiece assembly screw feeding mechanism, it includes: vibration screw feeder, for conveying screw; Inclined track, be connected to the discharge port of vibration screw feeder, wherein the middle is equipped with the guide groove for screw sliding; Rotary table, rotatably be equipped below the end of inclined track; Multiple through holes, along the equidistributed periphery of rotary table, for receiving the screw to be conveyed; Infrared detection unit, by opposite setting infrared emitter and infrared receiver on both sides of rotary table material taking station constitute; Driving motor, connect rotary table to drive its rotation; Control unit, the utility model discloses novel structure, infrared detection unit that infrared emitter and infrared receiver constitute real-time monitoring whether there is screw in through hole, through the linkage of control unit (integrated in the controller of driving motor) that is electrically connected with driving motor, automatic feeding (rotary table to empty through hole) is ensured that the material taking area always has screw on call, avoids the interruption of feeding.

Description

Technical Field

[0001] This utility model relates to a feeding mechanism, specifically a screw feeding mechanism for workpiece assembly. Background Technology

[0002] In the field of modern industrial automation production, screws, as basic and critical connecting components, play a decisive role in the production capacity and product quality of automated assembly lines through their efficient and precise delivery.

[0003] In existing technologies, screw conveying devices mostly use vibratory feeders for feeding. Although this can achieve the initial arrangement of screws, it has many limitations: On the one hand, after the screws are discharged from the vibratory feeder, there is a lack of effective guidance and speed control structure, which makes them prone to collisions and accumulation during the slippage process, resulting in low conveying efficiency; on the other hand, traditional rotary feeding devices cannot monitor the screw position in real time. When the feeding is interrupted, it is difficult to achieve automatic replenishment, which requires frequent manual intervention. This not only increases labor costs but also easily leads to production line stagnation, affecting production continuity. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a screw feeding mechanism for workpiece assembly, which effectively solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: This utility model includes:

[0006] Vibrating screw feeder, used for conveying screws;

[0007] An inclined track is connected to the discharge port of the vibrating screw feeder, and a guide groove for the screw to slide is provided in the middle.

[0008] A turntable is rotatably positioned below the end of an inclined track;

[0009] Multiple through holes are evenly distributed around the circumference of the turntable edge to receive and transport screws;

[0010] The infrared detection unit consists of an infrared transmitter and an infrared receiver that are positioned opposite each other on both sides of the turntable material handling station.

[0011] A drive motor is connected to the turntable to drive its rotation;

[0012] The control unit, electrically connected to the infrared receiver and the drive motor, is configured as follows:

[0013] When the infrared receiver receives an infrared signal, it controls the drive motor to drive the turntable to rotate by a predetermined angle, causing the empty through hole to rotate to the underside of the inclined track. The screw at the end of the inclined track falls into the through hole, and the through hole with the screw rotates to the material picking area.

[0014] Preferably, the guide groove is a T-shaped groove, used to convey the screw in a T-shape.

[0015] Preferably, the angle between the inclined track and the horizontal plane is 15°-45°.

[0016] Preferably, the diameter of the through hole is clearance-fitted with the screw shank and is smaller than the diameter of the nut.

[0017] Preferably, the control unit is integrated into the controller of the drive motor.

[0018] Preferably, it also includes a motor mount, which is installed at the bottom of the drive motor.

[0019] Beneficial effects: Turntable through-hole support: The through holes evenly distributed around the circumference of the turntable fit the screw rod with a clearance smaller than the nut diameter, which can accurately support the screw and prevent the nut from falling off or deviating in position.

[0020] Infrared detection and automatic control: The infrared detection unit, consisting of an infrared transmitter and an infrared receiver, monitors in real time whether there are screws in the through holes. Through linkage with the control unit (integrated in the controller of the drive motor) which is electrically connected to the drive motor, the unit automatically replenishes the material (rotates the turntable to an empty through hole) to ensure that there are always screws ready in the material picking area and avoids material supply interruption.

[0021] The rotating turntable drives the screw-bearing through-hole to the material picking area, enabling continuous and precise screw delivery. This ensures the stability and accuracy of screw supply during workpiece assembly, reduces manual intervention, and improves automation and production efficiency. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0024] Figure 2 This is a two-dimensional structural schematic diagram of the present invention from a second perspective;

[0025] Figure 3 This is a utility model Figure 2 A schematic diagram of the structure of A in the middle;

[0026] Figure 4 This is a cross-sectional view of the present invention;

[0027] The following are labeled in the diagram: 1. Vibrating screw feeder; 2. Inclined track; 3. Turntable; 4. Through hole; 5. Infrared transmitter; 6. Infrared receiver; 7. Drive motor; 8. Motor base. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-4 The specific embodiments of this utility model will be described in further detail.

[0029] Example 1, by Figure 1-4 This utility model provides a screw feeding mechanism for workpiece assembly, including a vibrating screw feeder 1, an inclined track 2, a turntable 3, a through hole 4, an infrared transmitter 5, an infrared receiver 6, a drive motor 7, and a motor base 8.

[0030] Vibrating screw feeder 1, used for conveying screws;

[0031] Inclined track 2 is connected to the outlet of vibrating screw feeder 1, and a guide groove for screw sliding is provided in the middle.

[0032] Turntable 3 is rotatably positioned below the end of inclined track 2;

[0033] Multiple through holes 4 are evenly distributed around the edge of the turntable 3 to receive and transport screws;

[0034] The infrared detection unit consists of an infrared transmitter 5 and an infrared receiver 6 that are positioned opposite each other on both sides of the material handling station of the turntable 3.

[0035] Drive motor 7 is connected to turntable 3 to drive it to rotate;

[0036] The control unit, electrically connected to the infrared receiver 6 and the drive motor 7, is configured as follows:

[0037] When the infrared receiver 6 receives an infrared signal, it controls the drive motor 7 to drive the turntable 3 to rotate by a predetermined angle, so that the empty through hole 4 rotates to below the inclined track 2, and the screw at the end of the inclined track 2 falls into the through hole 4, and the through hole 4 with the screw rotates to the material picking area.

[0038] Vibrating screw feeder 1: As the starting component for screw conveying, its main function is to arrange the screws in an orderly manner and transport them to subsequent components. Through vibration, the screws move continuously within the hopper, gradually arranging them neatly before being output from the discharge port.

[0039] Inclined track 2: Connected to the discharge port of the vibrating screw feeder 1, it has a guide groove in its center for screw sliding. This guide groove is a T-shaped groove, which can transport the screw in a T-shape, ensuring stable sliding of the screw on the track and preventing the screw from rolling or jamming during transportation. The angle between the inclined track 2 and the horizontal plane is set between 15° and 45°. This angle setting ensures that the screw slides smoothly under the action of gravity, while preventing the screw from sliding too fast and getting out of control due to an excessively large angle.

[0040] Turntable 3: Rotatably positioned below the end of the inclined track 2, it is one of the key components for precise screw feeding. Multiple through holes 4 are evenly distributed along the circumference of the turntable 3. These through holes 4 are used to receive and feed the screws. The diameter of the through holes 4 is clearance-fitted with the screw shank and smaller than the diameter of the nut. This design ensures that the screw can smoothly fall into the through holes 4 and will not fall out of the through holes 4 during the rotation of the turntable 3.

[0041] Infrared detection unit: Consists of an infrared transmitter 5 and an infrared receiver 6 positioned opposite each other on both sides of the material handling station of the turntable 3. The infrared transmitter 5 emits infrared signals, and the infrared receiver 6 receives infrared signals. Together, they are used to detect the state of the through holes 4 on the turntable 3.

[0042] Drive motor 7: Connected to turntable 3 and mounted on motor mount 8, its function is to provide power for the rotation of turntable 3. Control unit is electrically connected to infrared receiver 6 and drive motor 7, and the control unit is integrated into the controller of drive motor 7. When infrared receiver 6 receives an infrared signal, it indicates that there is no screw in the current through hole 4. At this time, the control unit controls drive motor 7 to drive turntable 3 to rotate a predetermined angle, causing the empty through hole 4 to rotate below the inclined rail 2, so that the screw at the end of the inclined rail 2 can fall smoothly into the through hole 4. Subsequently, the through hole 4 with the screw is rotated to the material picking area by turntable 3 for use in subsequent assembly processes.

[0043] Working principle: When this utility model is used, firstly, the vibrating screw feeder 1 is started, and the internal vibration device works, causing the screws to move continuously in the hopper. After being screened and arranged by the internal structure, the originally disordered screws are gradually arranged in an orderly manner and output from the discharge port (this is the prior art). The output screws enter the inclined track 2 connected to the discharge port of the vibrating screw feeder 1.

[0044] The T-shaped guide groove in the middle of the inclined track 2 plays a crucial role, allowing the screw to slide stably in a T-shape under the influence of gravity. Since the angle between the inclined track 2 and the horizontal plane is between 15° and 45°, this angle ensures that the screw slides smoothly under gravity while preventing it from sliding too fast and becoming uncontrollable. The screw slides smoothly to the end in the inclined track 2.

[0045] The turntable 3 is located below the end of the inclined track 2, and multiple through holes 4 evenly distributed along its upper edge are prepared to receive screws. The diameter of the through holes 4 is clearance-fitted with the screw shank and is smaller than the diameter of the nut. When the screw reaches the end of the inclined track 2, it will fall accurately into the through holes 4 of the turntable 3 below.

[0046] On both sides of the material handling station of the turntable 3, infrared transmitters 5 and infrared receivers 6 are arranged opposite each other to form an infrared detection unit. The infrared transmitters 5 continuously emit infrared signals. When the turntable 3 rotates, the infrared receivers 6 receive different signal states depending on whether there is a screw in the through hole 4. If the infrared receivers 6 receive an infrared signal, it indicates that there is no screw in the through hole 4 of the material handling area. At this time, the control unit (integrated in the controller of the drive motor 7) which is electrically connected to the infrared receivers 6 and the drive motor 7 controls the drive motor 7 to start, driving the turntable 3 to rotate a predetermined angle, rotating the empty through hole 4 to below the inclined rail 2, so that the screw at the end of the inclined rail 2 falls into the through hole 4.

[0047] The through hole 4 with screws rotates to the material picking area under the rotation of the turntable 3, providing screws for the subsequent workpiece assembly process. This cycle repeats to achieve continuous and precise screw delivery, ensuring the stability and accuracy of screw supply during workpiece assembly.

[0048] Beneficial effects: Inclined track guidance: The T-shaped guide groove in the middle of the inclined track 2, combined with an inclination angle of 15°-45°, uses gravity to make the screw slide stably in a T-shape, avoiding excessive downward speed or loss of control, and ensuring a smooth conveying process.

[0049] Turntable 3 with through holes 4 for receiving: The through holes 4 evenly distributed around the edge of the turntable 3 are fitted with the screw rod with a clearance smaller than the diameter of the nut, which can accurately receive the screw and prevent the nut from falling off or being misaligned.

[0050] Infrared detection and automatic control: The infrared detection unit, consisting of infrared transmitter 5 and infrared receiver 6, monitors in real time whether there are screws in the through hole 4. Through linkage with the control unit (integrated in the controller of drive motor 7) which is electrically connected to drive motor 7, the unit automatically replenishes the material (rotates turntable 3 to empty through hole 4) to ensure that there are always screws ready in the material picking area and avoids material supply interruption.

[0051] The rotation of turntable 3 drives the through hole 4 with screws to the material picking area, realizing continuous and precise screw delivery, ensuring the stability and accuracy of screw supply during workpiece assembly, reducing manual intervention, and improving automation and production efficiency.

[0052] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A screw feeding mechanism for workpiece assembly, characterized in that, include: Vibrating screw feeder (1), used for conveying screws; Inclined track (2) is connected to the outlet of vibrating screw feeder (1), and a guide groove for screw sliding is provided in the middle. A turntable (3) is rotatably positioned below the end of an inclined track (2); Multiple through holes (4) are evenly distributed along the circumferential edge of the turntable (3) to receive and transport screws; The infrared detection unit consists of an infrared transmitter (5) and an infrared receiver (6) positioned opposite each other on both sides of the material handling station of the turntable (3); A drive motor (7) is connected to a turntable (3) to drive it to rotate; The control unit, electrically connected to the infrared receiver (6) and the drive motor (7), is configured as follows: When the infrared receiver (6) receives the infrared signal, it controls the drive motor (7) to drive the turntable (3) to rotate by a predetermined angle, so that the empty through hole (4) rotates to the underside of the inclined track (2), and the screw at the end of the inclined track (2) falls into the through hole (4), and the through hole (4) with the screw rotates to the material picking area.

2. The screw feeding mechanism for workpiece assembly according to claim 1, characterized in that: The guide groove is a T-shaped groove, used to transport the screw in a T-shape.

3. The screw feeding mechanism for workpiece assembly according to claim 2, characterized in that: The angle between the inclined track (2) and the horizontal plane is 15°-45°.

4. The screw feeding mechanism for workpiece assembly according to claim 3, characterized in that: The diameter of the through hole (4) is clearance-fitted with the screw rod and is smaller than the diameter of the nut.

5. The screw feeding mechanism for workpiece assembly according to claim 4, characterized in that: The control unit is integrated into the controller of the drive motor (7).

6. The screw feeding mechanism for workpiece assembly according to claim 5, characterized in that: It also includes a motor mount (8), which is installed at the bottom of the drive motor (7).

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