A rivet gravity screening disc

Abstract

This invention relates to the field of screening equipment technology, and particularly to a gravity screening disc for rivets, comprising a vibrating disc base and a vibrating hopper. The inner wall of the vibrating hopper has a spiral lifting channel from bottom to top. The outlet of the lifting channel is connected to a screening track, which is arranged along the circumference of the vibrating hopper. The end of the screening track along the rivet conveying direction forms the outlet. The angle between the normal of the screening track and the horizontal plane continuously varies between 0°-90°-0°. Compared with the prior art, this invention achieves reliable rivet feeding through angle control of the screening track, eliminating the need for air blowing. This saves on corresponding solenoid valves, compressed air energy, and corresponding air pipe connectors and other accessories, resulting in lower costs and less noise. The screened rivets are returned to the screening track, eliminating the waste of rivets blown out. This invention offers high screening efficiency, high sorting accuracy, and low equipment cost.

Description

Technical Field

[0001] This invention relates to the field of screening equipment technology, and in particular to a rivet gravity screening disc. Background Technology

[0002] A vibratory feeder is an auxiliary feeding device for automated assembly or processing machinery. It arranges various products in an orderly manner, working with automated assembly equipment to assemble the various parts of the product into a complete product, or working with automated processing machinery to complete the processing of workpieces. A rivet consists of a rivet head and a rivet body. Existing rivet manufacturing companies use vibratory feeders to arrange the rivet heads in an orderly manner for discharge. The rivet heads from the vibratory feeder are then assembled by automated assembly equipment to obtain the rivet product.

[0003] Current rivet screening vibratory feeders (such as...) Figure 6-7 As shown), its track section (104) is as follows Figure 7 As shown, “G” represents the direction of gravity. The track section (104) remains unchanged in direction throughout the entire vibratory plate. The rivets (301, 302) move spirally upward in their track (104). Since the rivets are in bulk, they will have various postures when running upward. Therefore, it is necessary to use air blowers (101, 102, 103) to blow away the rivets with abnormal postures and only retain the rivets in the normal vertical state and supply them.

[0004] The above equipment has the following disadvantages: 1. The rivet supply is unreliable. When the air pressure is unstable, rivets in abnormal positions often get stuck at the outlet; 2. The continuous blowing from the air outlets (101, 102, 103) consumes a large amount of compressed air, which may affect the air pressure of the entire line; 3. The pressure adjustment of the air outlets (101, 102, 103) is difficult. It is necessary to test and adjust it for rivets of different lengths. If the air volume is too small, it may not be able to blow off rivets in abnormal positions. If the air volume is too large, it may blow the rivets directly out of the vibratory feeder, resulting in a lot of waste; 4. The air output requires independent valves, air pipes, interfaces and program control, which is costly and the system is complex. Summary of the Invention

[0005] To solve the above technical problems, the present invention provides a rivet gravity screening disc.

[0006] The technical solution adopted in this invention is as follows: a rivet gravity screening disc, including a vibrating disc base and a vibrating hopper, the key feature being: a spiral lifting channel is provided on the inner wall of the vibrating hopper from bottom to top, the outlet of the lifting channel is connected to a screening track, the screening track is arranged along the circumference of the vibrating hopper, and the end of the screening track along the rivet conveying direction forms the outlet, the angle between the normal of the screening track and the horizontal plane continuously changes between 0°-90°-0°. With this structure, rivets enter the screening track from the lifting channel. As the angle between the screening track and the horizontal plane changes, rivets in a normal posture move along the screening track until they are removed from the outlet, while rivets in an abnormal posture detach from the screening track when they reach a position where the angle between the screening track and the horizontal plane is 90°, and are then screened again.

[0007] Preferably, the screening track includes a front slide and a rear slide connected in sequence. The angle between the normal of the front slide and the horizontal plane continuously changes from 0° to 90°, and the angle between the normal of the rear slide and the horizontal plane continuously changes from 90° to 0°. This structure allows for continuous change of the angle between the screening track and the horizontal plane, reduces processing difficulty, and provides high mechanical strength.

[0008] Preferably, a first rivet conveying groove is provided on the front slide rail, and a second rivet conveying groove is provided on the rear slide rail. The first and second rivet conveying grooves are connected to form a rivet conveying channel. The groove opening in the middle section of the rivet conveying channel is located on the same plane as the inner wall of the vibrating hopper. With this structure, when a rivet in an abnormal posture moves to the middle section of the rivet conveying channel, it will fall off from the rivet conveying channel and fall into the lifting channel below to re-enter the screening process.

[0009] Preferably, the screening track is spirally arranged along the circumference of the vibrating hopper. This structure facilitates the movement of the rivets towards the discharge port along the screening track under the action of the vibrating plate.

[0010] Preferably, the length of the screening track is less than the inner circumference of the vibrating hopper. This structure allows for continuous variation of the angle between the screening track and the horizontal plane, while also reducing manufacturing difficulty.

[0011] Preferably, the inlet and outlet ends of the screening track are each provided with rivet return ports. This structure allows for the removal and return of rivets in abnormal positions to the screening track.

[0012] Beneficial effects: Compared with the prior art, the rivet gravity screening disc provided by the present invention achieves reliable rivet feeding through angle control of the screening track, eliminating the need for air blowing. This saves on the corresponding solenoid valves, compressed air energy, and corresponding air pipe connectors and other accessories, resulting in lower cost and less noise. The screened rivets are returned to the screening track, eliminating the waste of rivets blown out. The internal circulation is more complete. The present invention has high screening efficiency, high sorting accuracy, and low equipment cost, enabling reliable rivet discharge, improving production efficiency, and allowing rivet assembly operations to proceed normally. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention;

[0014] Figure 2 for Figure 1 The right view;

[0015] Figure 3 for Figure 1 Top view;

[0016] Figure 4 for Figure 3 CC section view;

[0017] Figure 5 for Figure 3 DD sectional view;

[0018] Figure 6 A schematic diagram of an existing rivet screening vibratory feeder structure;

[0019] Figure 7 for Figure 6 A schematic diagram of the track cross-section. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. Furthermore, the descriptions involving "first," "second," etc., in this invention are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0022] like Figure 1-5 As shown, a rivet gravity screening disc includes a vibrating disc base 1 and a vibrating hopper 2. The inner wall of the vibrating hopper 2 is provided with a spiral lifting channel 3 from bottom to top. The outlet of the lifting channel 3 is connected to a screening track 4. The rivets move along the lifting channel 3 under the action of the vibrating disc until they enter the screening track 4. The screening track 4 is arranged along the circumference of the vibrating hopper 2. The end of the screening track 4 along the rivet conveying direction forms a discharge port. The angle between the normal of the screening track 4 and the horizontal plane continuously changes between 0°-90°-0°. Due to the continuous change of the angle between the screening track 4 and the horizontal plane, rivets in a normal posture will continue to move along the screening track 4 until they are removed from the discharge port. Rivets in an abnormal posture will fall off the screening track 4 and enter the vibrating hopper 2 when they move to a position where the angle between the screening track 4 and the horizontal plane is 90°, and then be screened again.

[0023] like Figure 3-5 As shown, the screening track 4 includes a front slide 41 and a rear slide 42 connected in sequence. Both the front slide 41 and the rear slide 42 are fixedly connected to the vibrating hopper 2. The angle between the normal of the front slide 41 and the horizontal plane changes continuously from 0° to 90°, so that the vertical section of the front track is initially perpendicular to the horizontal plane. Subsequently, the normal gradually becomes inclined, and the vertical section of the front track is no longer perpendicular to the horizontal direction until it becomes parallel to the horizontal plane. The angle between the normal of the rear slide 42 and the horizontal plane changes continuously from 90° to 0°, so that the vertical section of the rear track is initially parallel to the horizontal plane. Subsequently, the normal gradually becomes inclined until the rear track becomes the same as the initial state of the front track, perpendicular to the horizontal plane. This realizes the continuous change of the angle between the screening track 4 and the horizontal plane.

[0024] like Figure 4-5As shown, a first rivet conveying groove 411 is provided on the front slide rail 41, and a second rivet conveying groove 421 is provided on the rear slide rail 42. The first rivet conveying groove 411 and the second rivet conveying groove 421 are connected to form a rivet conveying channel. The rivet can move continuously along the rivet conveying channel. The groove opening in the middle section of the rivet conveying channel is located on the same plane as the inner wall of the vibrating hopper 2. When a rivet in an abnormal posture moves to the middle section of the rivet conveying channel, since the vertical section of the front slide rail 41 gradually becomes parallel to the horizontal plane, and the groove opening in the middle section of the rivet conveying channel is located on the same plane as the inner wall of the vibrating hopper 2, the rivet is easily dislodged from the conveying channel under the action of vibration and falls into the lifting channel 3 below to re-enter the screening.

[0025] like Figure 1-2 As shown, the screening track 4 is spirally arranged along the circumference of the vibrating hopper 2. Since the outlet of the lifting channel 3 and the discharge port of the screening track 4 are not on the same plane, and the discharge port of the screening track 4 is located above the outlet of the lifting channel 3, the spiral arrangement facilitates the movement of the rivets along the screening track towards the discharge port under the action of the vibrating plate.

[0026] like Figure 1 As shown, the length of the screening track 4 is less than the inner circumference of the vibrating hopper 2. Preferably, the length of the screening track 4 is greater than the semicircumference of the vibrating hopper 2. A screening track 4 of suitable length can continuously change its angle with the horizontal plane from 0° to 90° to 0°, reducing workpiece processing costs and difficulty.

[0027] like Figure 3 As shown, the feed end and discharge end of the screening track 4 are respectively equipped with rivet return ports 5. When rivets in abnormal positions enter the screening track 4 from the lifting channel 3, they are initially screened through the rivet return ports 5. When they move to the middle section of the screening track 4, they are screened a second time by controlling the angle of the screening track. When they move to the tail end of the screening track 4, they are screened a third time through the rivet return ports 5, which greatly improves the reliability of rivet supply.

[0028] The high-frequency vibration core mold provided in this embodiment of the invention will be further explained below with reference to a specific application scenario:

[0029] During operation, the rivets move upward along the spiral material conveying channel 3 until they enter the screening track 4. Rivets in normal posture will continuously move along the rivet conveying channel on the screening track 4. Rivets in abnormal posture will undergo a first screening through the rivet return port 5 when they first enter the screening track 4. Other rivets will fall off the screening track 4 when they move to the middle section and undergo a second screening. The remaining rivets will undergo a third screening through the rivet return port 5 when they move to the end of the screening track 4. Finally, rivets in normal posture will be removed from the discharge port, while the rivets in abnormal posture that have been screened will be returned to the screening track. There will be no more rivets blown out and wasted.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Those skilled in the art, under the guidance of the present invention, can make various similar representations without departing from the spirit and claims of the present invention, and such modifications all fall within the protection scope of the present invention.

Claims

1. A rivet gravity sorting disc comprising a vibrating disc base (1) and a vibrating hopper (2), characterized in that: The inner wall of the vibrating hopper (2) is provided with a spiral lifting channel (3) from bottom to top, the discharge port of the lifting channel (3) is connected with a screening track (4), the screening track (4) is arranged along the peripheral surface of the vibrating hopper (2), the tail end of the screening track (4) along the rivet conveying direction forms a discharge port, and the normal line of the screening track (4) and the horizontal plane continuously changes between 0°-90°-0°.

2. A rivet gravity sorting disc according to claim 1, wherein: The screening track (4) comprises a front end slide (41) and a rear end slide (42) connected in sequence, the normal line of the front end slide (41) and the horizontal plane continuously changes from 0° to 90°, and the normal line of the rear end slide (42) and the horizontal plane continuously changes from 90° to 0°.

3. A rivet gravity sorting disc according to claim 2, wherein: The front end slide (41) is provided with a first rivet conveying groove (411), the rear end slide (42) is provided with a second rivet conveying groove (421), the first rivet conveying groove (411) and the second rivet conveying groove (421) are communicated to form a rivet conveying channel, and the slot opening of the middle section of the rivet conveying channel is located in the same plane as the inner wall of the vibrating hopper (2).

4. A rivet gravity sorting disc according to any one of claims 1 to 3, wherein: The screening track (4) is spirally arranged along the peripheral surface of the vibrating hopper (2).

5. A rivet gravity sorting disc according to any one of claims 1-3, characterized in that: The length of the screening track (4) is less than the inner circumference of the vibrating hopper (2).

6. A rivet gravity sorting disc according to any one of claims 1-3, characterized in that: The screening track (4) is provided with a rivet return port (5) at the feeding end and the discharging end respectively.

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