KR20190007708A - A spring pin separating apparatus - Google Patents

Abstract

The present invention relates to a spring pin sorting apparatus for automatically selecting a good product by obtaining a processed state image of a spring pin through a vision camera while a spring pin is seated on a component mounting block of a light transmissive material of a conical large rotary plate. According to the present invention, a spring pin sorting apparatus, which sorts spring pins delivered aligned in a state in which the spring pins are laid down from a component supply unit, includes: a conical large rotary plate rotating below the component supply unit; a component placement block of a light transmissive material attached onto the conical large rotary plate; first vision inspection means for inspecting whether an upper surface of the spring pin located on the component placement block is defective; second vision inspection means for inspecting whether a side surface of the spring pin located on the component placement block is defective; a good product transfer air gun for transferring a good spring pin; and a bad product transfer air gun for transferring a bad spring pin.

Description

A SPRING PIN SEPARATING APPARATUS

The present invention relates to a spring pin sorting apparatus, and more particularly to a spring pin sorting apparatus in which a spring pin is seated on a component mounting block of a light transmissive material of a conical large rotary plate to obtain a processing state image of the spring pin through a vision camera while the plate is rotated And a spring pin sorting apparatus for sorting good products.

A spring pin is a single layer or multi-ply part made of a thin, springy steel plate that is rounded in a cylindrical shape to generate a spring action in the radial direction of the pin. This part is mainly used as a relative position fixing part of the machine.

Such a spring pin is manufactured by press working, and defective products such as grooved clearance, inner diameter, outer diameter, and the like are generated due to the supply of material and the defective position of material processing during processing. Also, if the cut surface of the workpiece is not smooth, defective products may be generated because the workpiece contains foreign substances.

In the spring pin screening test, there is a possibility that the screening error of the good is caused by the condition of the worker because it is based on the subjective recognition and judgment of the defect criterion in the visual inspection of the worker.

In addition, in the case of spring pins used as accessories for automobiles, full inspection must be carried out, and even if one of the parts judged as good is defective even after thorough inspection, there is a possibility that the operation and stability of the assembled finished product may be fatal have.

Therefore, the inspection system using the computer vision system that can perform real time inspection is used for the screening of parts, and the machine vision is the core of the inspection process.

Machine vision is a technique to acquire image data with electrical, optical, and non-contact technology and to process and analyze good products. Recently, it has been actively applied in parts inspection field in Korea.

In the case of a spring pin, image data is acquired from the top of the spring pin to determine the inner diameter, outer diameter, width of the process groove, presence of foreign matter, and the like.

Particularly, in the case of parts having various lengths such as spring pins, it is easy to acquire image data of the upper surface of a part while vertically standing and transferring the parts when the length of the part is short. However, Moving vertically may cause parts to fall. Therefore, it is necessary to be able to easily move the parts by lying down and sorting the parts judged to be good and defective parts by using an air gun or the like.

For example, Korean Patent No. 1296826 entitled " Apparatus for selecting a washer-attaching bolt using a machine vision ", a head is formed in a washer-attaching bolt so that the washer-attaching bolt can be vertically transferred to the inspection area by the transfer unit, Korean Patent No. 1399006 entitled "Object Surface Vision Inspection Device" can stably transfer the structure of the object to be inspected in a vertical state when the object to be inspected is supplied through the alignment unit without a separate support.

Korean Patent No. 1376272 entitled " Object Vision Inspection Apparatus and Method " slips and feeds a supplied object by its own weight in a supply unit formed to supply the object.

However, in the case of the spring pin having the shape as shown in FIG. 10, since there is no head, the support can not be used as described above, and the length can not be fixed and can not be vertically transported. There is a limitation in the high speed inspection of the inner diameter, outer diameter, width of the process groove, presence of foreign matter, and the like.

An object of the present invention is to provide a method and apparatus for measuring the inner diameter, outer diameter, and groove width of a spring pin based on image data of a top surface of a spring pin, The present invention also provides a spring pin sorting apparatus using a spring pin.

An object of the present invention is to provide an image forming apparatus in which a spring pin is aligned and supplied in a state in which a spring pin is laid in order to obtain a top surface image of a spring pin to be placed in a groove of a component mounting block on a conical large rotary plate, And to provide a spring pin sorting apparatus using the vision inspection means for acquiring the spring pin sorting apparatus.

It is an object of the present invention to provide a spring pin sorting apparatus including a component placing block using a light transmitting material for a clear distinction between a spring pin and a seating block in acquired image data.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a spring pin sorting apparatus in which a component placing block is detachably attached to a spring pin of various sizes to acquire images of upper and side surfaces of the spring pin in a slack state.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a component mounting block in which a rotary plate with a component mounting block is configured to rotate in a tapered manner in a conical shape so that the component mounting block is placed at a horizontal inspection position, And arranging the sorting air gun.

The spring pin sorting apparatus according to the present invention for sorting the delivered spring pins in a state of being laid down from the component supply unit comprises a conical large rotary plate rotating under the component supply unit; A component mounting block of a light transmissive material attached onto the conical large rotary plate; First vision inspection means for inspecting whether or not the upper surface of the spring pin positioned on the component placement block is defective; A second vision inspection means for inspecting whether or not the side surface of the spring pin located on the component placement block is defective; A good-quality air gun for transferring a good spring pin; And a defective article transfer air gun for transferring a defective spring pin.

The spring pin sorting apparatus according to the present invention having the above-described configuration can sort parts at a high speed by transferring the parts lying down in order to obtain images of the upper surface of the parts which can not be inspected upright or balance is difficult to maintain at the time of transferring the parts.

The spring pin sorting apparatus according to the present invention can automatically check whether the machining state of a part is defective by measuring the width of the machined groove, the presence of foreign matter, the inner diameter and the outer diameter of the machining state of the spring pin.

The spring pin sorting apparatus according to the present invention can obtain a divided image of a component and a mount block by acquiring a component top image by lying down on a component mounting block of a light transmitting material.

The spring pin sorting apparatus according to the present invention rotates the rotary plate 20 so as to be inclined by the corner angle of the truncated cone to obtain a top image at a horizontal position (inspection position) of the component placement block, So that it can be applied to easily select a sprin pin even with a small air-bag pressure.

The spring pin sorting apparatus according to the present invention can be easily applied to the screening test for spring pins or parts having different outer diameters by using the attachable and detachable part placing block.

The spring pin sorting apparatus according to the present invention can be easily applied to a component screening test in which the length of the component is long and is difficult to supply.

1 is a perspective view of a spring pin sorting apparatus according to the present invention.
2 is a top view of the spring pin sorting apparatus according to the present invention.
3 is a front view of the spring pin sorting apparatus according to the present invention.
4 is a side view of the spring pin sorting apparatus according to the present invention.
FIG. 5 is a perspective view of a cone-shaped rotary plate for part transfer among the spring pin sorting apparatus according to the present invention. FIG.
FIG. 6 is a side view of a conical large rotary plate for component transfer in a spring pin sorter according to the present invention. FIG.
7 is a side view including numerical values of a conical large rotary plate for part transfer among the spring pin sorting apparatus according to the present invention.
8 is a perspective view of a component mounting block of a light transmitting material included in a conical large rotary plate for component transfer among the spring pin sorting apparatus according to the present invention.
9 is a front view of a component mounting block of a light transmissive material included in a conical large rotary plate for component transfer in the spring pin sorting apparatus according to the present invention.
10 (a) and 10 (b) are views showing the shapes of the spring pins to be inspected and sorted in the parts sorting apparatus according to the present invention.

Hereinafter, a component sorting apparatus according to the present invention will be described with reference to FIGS. 1 to 10. FIG.

The present invention relates to a part sorting apparatus which automatically supplies parts from parts to supply parts, to judge whether the parts are defective, to classify good parts and defective parts. The part sorting device includes a conical large rotary plate (20) A component mounting block 40 of a light transmissive material is attached to the upper surface of the plate 20 and as the conical large rotary plate 20 is rotated at an angle of 7.5 degrees with respect to the horizontal, (31a, 32a) to obtain accurate images of the top and side surfaces of the parts placed in the recesses on the component placing block (40).

The reason for obtaining the image of the top surface of the part is to determine the good part of the part processing state by measuring the outer diameter R, the inner diameter r and the groove width d of the spring pin having the shape as shown in Fig. 10 This is because the presence of a foreign substance can be confirmed from the image obtained from the upper surface of the component. By measuring the outer diameter, the inner diameter and the groove width of the processed part by using the vision inspection means, the processing state of the component can be accurately and quickly discriminated.

The reason why the components are transported with the component lying down is that it is difficult to vertically transport the component when the component is transported in the case where the component is structurally long or has no head due to the component structure.

When an image of the upper surface of the component is acquired from the side by lying down on the component, the image surface of the component upper surface image becomes difficult due to the contact surface with the component placement block. Therefore, by utilizing a component mounting block made of a light-transmitting material, the component and the mounting block are distinguished from each other in the obtained top image.

The light-transmissive component mounting block is configured to be detachable so that it can be easily applied to vision inspection means for obtaining top and side images by transferring spring pin parts or elongated parts having different diameters (outer diameter) by lying down .

The reason for constructing the rotary plate as a conical shape is to give a warp (?) To the rotary plate so that the component can be easily transferred to the small air quantity of the air gun when sorting the parts.

By rotating the rotating plate itself by tilting it by the angle of inclination of the truncated cone (?), Accurate top image of the part can be obtained by maintaining the horizontal part of the image during top image acquisition by the first vision inspection means at the top surface inspection position ("B" .

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it will be understood by those skilled in the art that the following embodiments are provided so that those skilled in the art will be able to fully understand the present invention, and that various changes and modifications may be made without departing from the scope of the present invention. It is not.

1 to 4, a spring pin sorting apparatus 100 according to the present invention includes a component supply unit 10 for sequentially transferring components aligned in a row, components sequentially supplied one by one, A first vision inspection means 31a for inspecting the upper surface of the component from the side, a conical large rotary plate 20 which is rotated at a constant speed And a rotary drive motor unit 60 for rotating the rotary drive motor.

Preferably, the conical large rotary plate 20 and the vision inspection means according to the present invention may further comprise a second vision inspection means 31a for inspecting at least one of the length of the component and the side machining state of the component.

The component supply unit 10 includes a hopper for storing components that have undergone the manufacturing process, a bowl feeder for aligning the components transferred by the elevator from the hopper in a predetermined direction and position, (Not shown) that feeds the linear feeder.

The spring pin sorting apparatus 100 according to the present invention operates in the following order.

First, the parts sequentially supplied from the component supply unit 10 are arranged in the form as shown in Figs. 8 and 9 on the component mounting block 40 of the cone-shaped rotary plate 20 for top image acquisition, The first and second vision inspection means 31a and 32a operate by a signal from a detection sensor (optical sensor, not shown) for detecting the presence or absence of a component.

When the detection sensor provided on one side of the component placing block 40 detects the presence of the component, the first vision inspection means 31a acquires the image data of the top surface of the component at the inspection position ("B"), At the same time, the second vision inspection means 32a acquires the side image data of the part.

The top image data of the side image data with respect to the length of the part and the processing state and the inner diameter r, the outer diameter R, the width d and the processing state of the part are inputted to the control unit ) To determine whether the component is defective or not.

 A first backlight illumination part 31b is provided on the opposite side of the first vision inspection means 31a to illuminate the part so as to obtain an excellent shadow image. On the opposite side of the second vision inspection means 32a, And a second backlight illumination part 32b that illuminates the part to acquire an image.

Preferably, the first and second vision inspection means 31a, 32a may be machine vision cameras.

A component mounting block 40 of a light transmitting material is attached to the upper surface of the large conical rotating plate 20 which rotates counterclockwise as shown in Fig.

6, the conical large rotary plate 20 is assembled so as to incline with reference to the horizontal axis at the same slope as the truncated conical edge ("A" in Fig. 7) The component mounting block 40 is in a horizontal state so that the correct top surface image data of the spring pin placed on the component mounting block is obtained by the first vision inspection means 31a and the correct side image data of the spring pin is obtained by the second vision Can be obtained by the inspection means 32a.

The component mounting block 40 attached to the upper surface of the conical large rotary plate 20 is formed on the upper surface so that the supplied component guided from the component supply unit 10 and slidably mounted thereon can be seated. The component placing block 40 is made of a light-transmitting material, and may preferably be made of glass.

The parts to be inspected and selected in the part sorting apparatus of the present invention are spring pins, and the material thereof is steel.

The inclination (?) Of the truncated cone corner ("A") of the conical large rotary plate 20 is easily discharged from the component placing block 40 by the air gun having a small blowing pressure, At an angle to allow for easy ejection, depending on the part seating block 40 and the material of the part to be inspected and sorted.

The first vision inspection means 31a for obtaining a top image of the part is arranged to face the inspection position where the component mounting block 40 is parallel to the horizontal axis while the cone rotation plate 20 is rotated, On the opposite side, a defective product air gun 52 is installed to select defective products. Before the defective product is sorted, a good article transfer air gun 51 is installed in front of the defective article transfer air gun 52 in order to select good products.

In the present invention, in order to prevent a defective component from being mixed with a good product due to a malfunction of the sorting device, a defective component is always detected at a position where the inclination of the conical large rotary plate 20 is the most urgent, So that the defective product can be received by the deflectable air gun 51 at a position before the rotary plate is rotated 180 degrees from the inspection position ("B").

The foregoing description is merely illustrative of the technical features of the present invention and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention and are not intended to limit the scope of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: Component supply unit
20: Large conical rotating plate
31a: first vision inspection means
31b: a first backlight illumination part
32a: second vision inspection means
32b: a second backlight illumination part
40: Part seating block
51: Air gun for good goods transport
52: Air gun for defective product
60: rotation drive motor section
100: Spring pin sorting device

Claims (5)

A spring pin sorting apparatus for sorting a delivered spring pin in a state of being laid down from a component supply unit,
A conical large rotary plate rotating below the component supply unit;
A light-transmissive component-seating block attached to the cone-shaped rotation plate;
A first vision inspection means for inspecting whether or not the upper surface of the spring pin located on the component placement block is defective;
A second vision inspection means for inspecting whether or not the side surface of the spring pin located on the component placement block is defective;
A good-quality air gun for transferring a good spring pin; And
And a defective article transferring air gun for transferring a defective spring pin.
The method according to claim 1,
Wherein the conical large rotary plate is inclined at an angle equal to an edge inclination of the truncated cone.
The method according to claim 1,
Wherein the first vision inspection means is horizontally spaced apart from a horizontal position (inspection position) of the component placement block on the side of the rotation plate.
The method of claim 3,
Wherein the defective article transfer air gun is installed on the opposite side of the inspection position.
The method according to claim 1,
Wherein the component mounting block of the light transmitting member is detachable and the upper surface of the component mounting block is formed with a groove for allowing the component to be seated thereon.

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