A key detection mechanism

Abstract

The utility model relates to the detection field of button size especially points to a button detection mechanism, contains in the distance of the position change of guide axle body, records each acquisition unit of axle body surface, and the host computer of preset visual detection system, and the host computer carries out feature comparison according to the data provided by acquisition unit, and, uses the material taking mechanism of positive pressure and separates the axle body from the carrier, the utility model provides a kind of implementation scheme of machine replacing manual, effectively controls the delivery of defective product, stops a large number of defective product from flowing into market, mainly utilizes the scheme of visual detection, obtains corresponding pattern data by acquisition unit, then by the host computer with visual detection system carries out representation comparison, in the whole detection process, is not influenced by external environment, and the accuracy degree is high, and efficiency is faster than visual inspection.

Description

Technical Field

[0001] This utility model relates to the field of button size detection, and more particularly to a button detection mechanism. Background Technology

[0002] The key switches on the keyboard need to undergo visual inspection after leaving the factory. The inspection mainly includes whether the size of the key switches meets the factory standards and whether there are any defects in the appearance.

[0003] Existing key detection methods rely heavily on manual labor, visual inspection, and the use of testing tools to detect the switches.

[0004] It is important to understand that visual inspection is inherently prone to instability in its results, as it is highly susceptible to the influence of external environment and personal factors. Furthermore, visual inspection itself suffers from low accuracy, which leads to frequent feedback from suppliers regarding product defects after the product leaves the factory. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a button detection mechanism to replace the traditional visual inspection method and improve the accuracy of the detection process.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a button detection mechanism, characterized in that it includes various acquisition units that record the outer surface of the shaft during the path of the guide shaft position change, and a host computer with a pre-installed vision detection system, wherein the host computer performs feature comparison based on the data provided by the acquisition units; and a material picking mechanism that uses positive pressure to pull the shaft away from the carrier.

[0007] The beneficial effects of this utility model are:

[0008] This utility model provides an implementation scheme for replacing manual labor with machines, effectively controlling the shipment of defective products and preventing a large number of defective products from entering the market. It mainly utilizes a visual inspection scheme, which acquires corresponding pattern data through a data acquisition unit, and then performs characterization and comparison by a host computer equipped with a visual inspection system. In the entire inspection process, it is not affected by the external environment, has high accuracy, and is faster than visual inspection.

[0009] In this specific embodiment, the host computer is a computer. By inputting a standard pattern into the system, the pattern data provided by the acquisition unit is compared with the standard pattern in the host computer. The above-mentioned visual inspection system is a prior art visual inspection system, and its principle will not be described in detail.

[0010] This utility model includes a ring-shaped feeding platform, with a carrier located in the feeding platform. The collection unit can collect the side of the shaft near the inner ring surface by covering the area of ​​the inner ring surface. This design, which takes up part of the area of ​​the feeding platform and transforms it into a place to place the collection unit, has a higher level of space utilization.

[0011] Secondly, the material handling mechanism is also designed around the feeding platform. In this regard, the material handling mechanism is designed to converge towards the feeding platform to avoid a situation where a large amount of space is occupied due to the linear layout.

[0012] It also includes a positioning mechanism located outside the feeding platform. The positioning mechanism includes a positioning table and a transport robot. The transport robot is distributed above the positioning table and is used to transfer the shaft in the feeding vibratory feeder to the positioning table, and then transfer the shaft on the positioning table to the carrier. The transport direction of the shaft coincides with the diameter direction of the feeding platform. Therefore, the first acquisition unit and the second acquisition unit in the acquisition unit are located on both sides of the positioning table and take pictures of the two opposite sides of the shaft: the first side and the second side.

[0013] Once the shaft is transported to the feeding platform, the third and fourth acquisition units located on the inner and outer ring surfaces of the feeding platform can naturally take pictures and record the other set of opposite third and fourth sides of the shaft.

[0014] The fifth acquisition unit detects the upper surface of the shaft. Typically, the fifth acquisition unit is set on the first support or the first longitudinal linear moving mechanism, and can directly record the image of the upper surface of the shaft.

[0015] The positioning stage also includes multiple sets of first positioning blocks for positioning the shaft. The spacing between each set of first positioning blocks forms a first positioning cavity that constrains the position of the shaft. The first positioning blocks extend along the length of the positioning stage, allowing the shaft to expose its first and second sides.

[0016] To facilitate the positive pressure blowing out of the shaft, the carrier includes multiple first openings integrated on the feeding platform and multiple sets of second positioning blocks. The first openings have slots on both sides, and the two second positioning blocks in each set are set on the slots. The gap between the second positioning blocks forms a second positioning cavity for positioning the shaft, so that the shaft is suspended above the first opening. The purpose is to reduce the contact area with the shaft, especially with the bottom of the shaft. It should be noted that the bottom of the shaft is an irregular structure, and a flat horizontal surface cannot provide effective support. In fact, the tilt of the shaft may even cause problems in the later comparison. Therefore, the second positioning blocks and the first openings are used to position the shaft from both sides to avoid the shaft tilting.

[0017] The material receiving mechanism includes a receiving bin and a positive pressure assembly suspended on the feeding platform. The positive pressure assembly includes a solenoid valve and an air pipe. The air pipe and the solenoid valve are connected. The solenoid valve has an air outlet. The solenoid valve is closer to the inner ring surface of the feeding platform than the first opening, so that the air outlet of the solenoid valve faces the shaft and the flow direction formed is outward from the outer ring surface. The receiving bin is located outside the outer ring surface of the feeding platform. Under the action of the positive pressure airflow, the shaft is directly blown into the receiving bin.

[0018] The material handling mechanism has at least three sets: the first set is used to collect shafts with defects on the first and second sides; the second set is used to collect shafts with defects on the third and fourth sides; and the third set is used to collect shafts with surface defects.

[0019] In this specific embodiment, a second support is also included, and the positive pressure component is disposed on the second support.

[0020] Within the inner ring area, a first light source board is also provided, with a second opening on the light source board. The acquisition end of the third acquisition unit corresponds to the second opening, and the light-emitting surface of the first light source board corresponds to the shaft on the feeding table.

[0021] It also includes a second light source board. In this specific embodiment, the second light source board is set on the output end of the first linear moving mechanism. The second light source board has a third opening, and the acquisition end of the fifth acquisition unit corresponds to the third opening. The light-emitting surface of the second light source board corresponds to the shaft on the feeding table.

[0022] In addition, there is a sixth acquisition unit, which is located below the feed plate. The sixth acquisition unit detects the lower end face of the shaft through the first opening. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present invention.

[0024] Figure 2 yes Figure 1 Enlarged diagram of point A.

[0025] Figure 3 yes Figure 1 A 3D view from another direction.

[0026] Figure 4 yes Figure 3 Enlarged diagram of point C.

[0027] Figure 5 yes Figure 3 Enlarged diagram of point D.

[0028] Figure 6 It is a three-dimensional view of the shaft.

[0029] Figure 7 yes Figure 6A 3D view from another direction.

[0030] Figure 8 This is a schematic diagram after the second positioning block has been removed.

[0031] Figure 9 yes Figure 3 Enlarged diagram of point B. Detailed Implementation

[0032] like Figure 1-9 As shown, a button detection mechanism is characterized by comprising various acquisition units that record the outer surface of the shaft during the path of the guide shaft position change, a host computer with a pre-installed vision detection system, the host computer performing feature comparison based on the data provided by the acquisition units, and a material handling mechanism that uses positive pressure to pull the shaft away from the carrier 1.

[0033] The beneficial effects of this utility model are:

[0034] This utility model provides an implementation scheme for replacing manual labor with machines, effectively controlling the shipment of defective products and preventing a large number of defective products from entering the market. It mainly utilizes a visual inspection scheme, which acquires corresponding pattern data through a data acquisition unit, and then performs characterization and comparison by a host computer equipped with a visual inspection system. In the entire inspection process, it is not affected by the external environment, has high accuracy, and is faster than visual inspection.

[0035] In this specific embodiment, the host computer is a computer. By inputting a standard pattern into the system, the pattern data provided by the acquisition unit is compared with the standard pattern in the host computer. The above-mentioned visual inspection system is a prior art visual inspection system, and its principle will not be described in detail.

[0036] This utility model includes a ring-shaped feeding platform 2, with a carrier 1 located in the feeding platform 2. The collection unit is used to collect the side of the shaft 3 near the inner ring surface by covering the area of ​​the inner ring surface. This design, which takes up part of the area of ​​the feeding platform 2 and transforms it into a place to place the collection unit, has a higher level of space utilization.

[0037] Secondly, the material handling mechanism is also designed around the feeding platform 2. The material handling mechanism is designed to converge towards the feeding platform 2 to avoid a situation where a large amount of space is occupied due to the linear layout.

[0038] It also includes a positioning mechanism located outside the feeding platform 2. The positioning mechanism includes a positioning platform 6 and a transport robot. The transport robot is distributed above the positioning platform 6 and is used to transfer the shaft 3 in the feeding vibratory plate to the positioning platform 6, and then transfer the shaft 3 on the positioning platform 6 to the carrier 1. The transport direction of the shaft 3 is directed towards the axis of the feeding platform 2. Therefore, the first acquisition unit 51 and the second acquisition unit 52 in the acquisition unit are located on both sides of the positioning platform 6, and take pictures of the two opposite sides of the shaft 3: the first side 31 and the second side 32.

[0039] Once the shaft 3 is transported to the feeding platform 2, the third acquisition unit 53 and the fourth acquisition unit 54 located on the inner and outer ring surfaces of the feeding platform 2 can naturally take pictures and record the other set of opposite third side surfaces 33 and fourth side surfaces 34 of the shaft 3.

[0040] The fifth acquisition unit 55 is used to detect the upper surface of the shaft 3. Typically, the fifth acquisition unit 55 is set on the first support or the first linear moving mechanism 7 in the longitudinal direction, and can directly record the image of the upper surface of the shaft 3.

[0041] The positioning platform 6 also includes multiple sets of first positioning blocks 61 for positioning the shaft 3. The spacing between each set of first positioning blocks 61 forms a first positioning cavity that constrains the position of the shaft 3. The first positioning blocks 61 extend along the length of the positioning platform 6, so that the shaft 3 can expose the first side 31 and the second side 32.

[0042] To facilitate the positive pressure blowing out of the shaft 3, the carrier 1 includes multiple first openings 100 integrated on the feeding table 2 and multiple sets of second positioning blocks 101. The first openings 100 have slots 100a on both sides. Two second positioning blocks 101 in each set are set on the slots 100a, and the gap between the second positioning blocks 101 forms a second positioning cavity for positioning the shaft 3, so that the shaft 3 is suspended above the first openings 100. The purpose is to reduce the contact area with the shaft 3, especially the contact with the bottom of the shaft 3. It should be noted that the bottom of the shaft 3 is an irregular structure. A flat horizontal surface cannot provide effective support, and even the tilt of the shaft 3 may cause problems in the later comparison. Therefore, the second positioning blocks 101 and the first openings 100 are used to position the shaft 3 from both sides to avoid the shaft 3 from tilting.

[0043] The material receiving mechanism includes a receiving bin 41 and a positive pressure assembly suspended on the feeding platform 2. The positive pressure assembly includes a solenoid valve 42a and an air pipe. The air pipe is connected to the solenoid valve 42a. The solenoid valve 42a has an air outlet. The solenoid valve 42a is closer to the inner ring surface of the feeding platform 2 than the first opening 100, so that the air outlet of the solenoid valve 42a, after facing the shaft 3, forms a flow channel that points outward from the outer ring surface. The receiving bin 41 is located outside the outer ring surface of the feeding platform 2. Under the action of the positive pressure airflow, the shaft 3 is directly blown into the receiving bin 41.

[0044] The material handling mechanism has at least three sets: the first set is used to collect shafts 3 with defects on the first side 31 and the second side 32; the second set is used to collect shafts 3 with defects on the third side 33 and the fourth side 34; and the third set is used to collect shafts 3 with defects on the upper surface.

[0045] In this specific embodiment, a second support 8 is also included, and the positive pressure component is disposed on the second support 8.

[0046] Within the inner ring area, a first light source plate 91 is also provided. The first light source plate 91 has a second opening 91a. The acquisition end of the third acquisition unit 53 corresponds to the second opening 91a. The light-emitting surface of the first light source plate 91 corresponds to the shaft 3 on the feeding table 2.

[0047] It also includes a second light source plate 92. In this specific embodiment, the second light source plate 92 is disposed on the output end of the first linear moving mechanism 7. The second light source plate 92 is provided with a third opening. The acquisition end of the fifth acquisition unit 55 corresponds to the third opening. The light-emitting surface of the second light source plate 92 corresponds to the shaft 3 on the feeding table 2.

[0048] In addition, there is a sixth acquisition unit 56, which is located below the feeding table 2. The sixth acquisition unit 56 detects the lower end face of the shaft 3 through the first opening 100.

[0049] A better approach is to use a camera as the acquisition unit.

[0050] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A button detection mechanism, characterized in that, It includes various acquisition units that record the outer surface of the shaft during the path of the shaft's position change, a host computer with a pre-installed vision inspection system that performs feature comparison based on the data provided by the acquisition units, and a material handling mechanism that uses positive pressure to pull the shaft away from the carrier.

2. The button detection mechanism according to claim 1, characterized in that, It also includes a ring-shaped feeding platform, in which the carrier is located, and the collection unit is used to collect the side of the shaft near the inner ring surface by covering the area of ​​the inner ring surface.

3. The button detection mechanism according to claim 2, characterized in that, The material handling mechanism retracts in a circular direction towards the feeding platform.

4. The button detection mechanism according to claim 2, characterized in that, It also includes a positioning mechanism located outside the feeding table. The positioning mechanism includes a positioning platform and a transport robot. The transport robot is distributed above the positioning platform and is used to transfer the shaft in the feeding vibratory feeder to the positioning platform, and then transfer the shaft on the positioning platform to the carrier. The transport direction of the shaft coincides with the diameter direction of the feeding table. The first acquisition unit and the second acquisition unit in the acquisition unit are located on the two sides of the positioning platform, respectively, on the two opposite sides of the shaft.

5. A button detection mechanism according to claim 2, characterized in that, The acquisition unit also includes a third acquisition unit and a fourth acquisition unit located on the inner and outer ring surfaces of the feeding platform. The third and fourth acquisition units take pictures and record the third and fourth sides of the shaft that are opposite to each other. In the area of ​​the inner ring surface, a first light source board is also provided. The light source board has a second opening. The acquisition end of the third acquisition unit corresponds to the second opening. The light-emitting surface of the first light source board corresponds to the shaft on the feeding platform.

6. A button detection mechanism according to claim 2, characterized in that, The acquisition unit also includes a fifth acquisition unit, which detects the upper surface of the shaft. The fifth acquisition unit is set on the first bracket or the first linear moving mechanism in the longitudinal direction and directly records the image on the upper surface of the shaft. The button detection mechanism also includes a second light source board, which is set on the output end of the first linear moving mechanism. The second light source board has a third opening, and the acquisition end of the fifth acquisition unit corresponds to the third opening. The light-emitting surface of the second light source board corresponds to the shaft on the feeding table.

7. A button detection mechanism according to claim 2, characterized in that, The positioning stage also includes multiple sets of first positioning blocks for positioning the shaft. The spacing between each set of first positioning blocks forms a first positioning cavity that constrains the position of the shaft. The first positioning blocks extend along the length of the positioning stage, allowing the shaft to expose its first and second sides.

8. A button detection mechanism according to claim 2, characterized in that, The carrier includes multiple first openings integrated on the feeding table and multiple sets of second positioning blocks. The first openings have slots on both sides, and the two second positioning blocks in each set are set on the slots. The gap between the second positioning blocks forms a second positioning cavity for positioning the shaft, so that the shaft is suspended above the first opening.

9. A button detection mechanism according to claim 2, characterized in that, The material receiving mechanism includes a receiving bin and a positive pressure assembly suspended on the feeding platform. The positive pressure assembly includes a solenoid valve and an air pipe. The air pipe and the solenoid valve are connected. The solenoid valve has an air outlet. The solenoid valve is closer to the inner ring surface of the feeding platform than the first opening, so that the air outlet of the solenoid valve faces the shaft and the flow direction formed is outward from the outer ring surface. The receiving bin is located outside the outer ring surface of the feeding platform. Under the action of the positive pressure airflow, the shaft is directly blown into the receiving bin.

10. A key detection mechanism according to claim 9, characterized in that, The material handling mechanism has at least three sets: the first set is used to collect shafts with defects on the first and second sides; the second set is used to collect shafts with defects on the third and fourth sides; and the third set is used to collect shafts with defects on the upper surface. It also includes a second bracket, on which a positive pressure component is mounted. In addition, the collection unit includes a sixth collection unit, which is located below the feeding plate. The sixth collection unit detects the lower end face of the shaft through the first opening.

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