KR101625565B1 - vision inspection apparatus with selective illumination - Google Patents

Abstract

The present invention relates to a vision inspection apparatus with selective lighting. Since lighting is selectively used in accordance with color and shape of a suspension bearing, a clear image for an inner and an outer edge of a suspension bearing is able to be acquired; thus being able to remarkably enhance a correctness and reliability of a vision inspection. Since a first or a second lighting unit installs light sources on an inclined plate in order to concentrate lighting for the inner or outer edge of a chassis connecting member of the suspension bearing, and is installed in a position higher or lower than an accommodation jig; the correctness and reliability of the inspection is able to be enhanced due to this simple structure. Moreover, since a transporting unit automatically transports an inject molding product to an auxiliary accommodation unit, which is a predetermined position performing chucking by a chucking unit, and an aligning process finally accommodating the injection molding products to the auxiliary accommodation unit one by one as intervals between the products are decreased along a moving direction; unnecessary manpower consumption is able to be saved and a processing time is able to remarkably be decreased. In addition, since a discharge unit to discharge the inspected injection molding products comprises a driving motor and a discharging plate of which an end part is rotated by the driving motor, depending on the inspection results; the injection molding product is separated and automatically discharged.

Description

[0001] The present invention relates to a vision inspection apparatus,

[0001] The present invention relates to a vision inspection apparatus capable of selectively illuminating, and more particularly, to a vision inspection apparatus capable of remarkably reducing the processing time and manpower consumption by including a transfer unit for automatically aligning and transferring a supplied inspection object, And more particularly, to a vision inspection apparatus capable of increasing the accuracy and reliability of inspection by selectively using illumination so that a clear image is obtained.

A macpherson strut bearing unit (MSBU) is a suspension strut mounted on a suspension strut on a front wheel of an automobile to support the axle and wheel of an automobile. It is a device for receiving a suspension strut. The demand is gradually increasing due to the advantages of the suspension which absorbs impact and vibration to prevent damage to the vehicle body due to impact and vibration and to enhance the ride quality.

Fig. 1 is a perspective view showing an automotive suspension bearing (MSBU), and Fig. 2 is a real view of Fig.

1 and 2, the automotive suspension bearing 100 is composed of a guide ring 101 formed by injection molding of a mold and a body connecting member 103 injection-molded by inserting the guide ring 101 into a mold . 1 and 2, the shape of the suspension bearing 100 is not limited to the shape of the suspension bearing 100, and various known structures may be applied to the suspension bearing 100. For example, .

The guide ring 101 is formed in a cylindrical shape having open upper and lower portions, and an extended portion 111 protruding outward from the outer side surface at an intermediate point in the height direction is formed. At this time, the guide ring 101 is inserted into a slide bearing (not shown), and the slide bearing is hooked on the extension portion 111.

Further, the guide ring 101 includes a steel pad (not shown), which is a metal reinforcing material, and has high durability against mechanical load when the suspension bearing 100 is inserted.

The vehicle body connecting member 103 is composed of an outer rim 131 formed on the upper surface of the extended portion 111 of the guide ring 101 and an inner rim 133 formed on the upper surface of the guide ring 101. At this time, a plurality of extension pieces 135 are formed in the outer edge 131 in the direction toward the inner edge.

Further, the body connecting member 103 is normally formed in a white color.

The suspension bearing 100 having such a structure is known and commercialized in various forms in various forms such as assembly and molding part insert molding and integral molding, and this method is generally used for assembly and molding using a difficult process and equipment. And the use frequency of the suspension strut is increasing due to the advantage of supporting the suspension strut rotatably on the vehicle body.

Particularly, since the suspension bearing 100 is directly connected to the ride comfort and safety of a vehicle, it is required to have high reliability regarding the dimensional accuracy of the product. Accordingly, in the manufacturing process of the suspension bearing 100, accurate inspection and diagnosis Should be made mandatory.

At this time, in the suspension bearing 100, the guide ring 101 formed by the primary mold injection is not only simple in injection method but also has a large thickness and area, so that the defect rate is usually close to zero, The outer frame 131, the inner frame 133, and the elongated pieces 135 are formed by a double injection process in which injection molding is performed using the primary injection molded product as an insert, The vision inspection must be performed.

3 is an exemplary view showing a conventional vision inspection apparatus.

3, the conventional vision inspection apparatus 200 includes a seating jig 201 on which an object to be inspected is seated, a camera 201 which is installed so as to focus on the seating jig 201, And a lighting unit 205 for outputting illumination toward the seating jig 201 to obtain a clear image.

That is, the conventional vision inspection apparatus 200 compares an image obtained by photographing an inspection object to be inspected with a camera 203 with an image (hereinafter referred to as a reference image) when the inspected object is normal, .

However, when the suspension bearing 100 of FIGS. 1 and 2 as described above is applied to the inspection target of the conventional vision inspection apparatus 200, since the illumination unit 205 is simply formed in a planar shape, The vehicle body connecting member 103 of white color is not distinguished from the light, so that a clear image can not be obtained.

That is, in order to perform the vision inspection of the suspension bearing 100, the color of the vehicle body connecting member 103 formed in a white color and the shape of the shape in which the outer rim 131 and the inner rim 133 are to be inspected It is necessary to perform a vision inspection in consideration of the characteristics of the suspension bearing 100. However, there is a lack of research on a vision inspection apparatus that takes into consideration the color and shape characteristics of the suspension bearing 100. [

In addition, since the suspension bearing 100 generally proceeds after the mold injection process and the mold injection process in recent years is operated as a robot automation system, the injection molded product for performing the inspection is continuously supplied. However, Since the process of aligning the injection molded articles and transferring them to the seating jig 201 is performed by the human force, unnecessary labor is consumed and the process time is delayed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide a vision inspection apparatus capable of selective illumination capable of acquiring a clear image corresponding to the color and shape of a suspension bearing, .

In addition, another object of the present invention is to provide a lighting apparatus for a vehicle, in which light sources of a first illumination unit or a second illumination unit are installed on a swash plate so that illumination is focused on an outer edge or an inner edge of a vehicle body connecting member of a suspension bearing, The present invention is to provide a vision inspection apparatus capable of selectively illuminating an outer edge or an inner edge of a suspension bearing to obtain a clear image, thereby enhancing the accuracy of inspection.

Further, another object of the present invention is to provide a lighting apparatus, which includes a second moving stage in which a second illuminating unit is coupled to a frame unit so as to be slidably movable, and a hollow is formed at the center of the second illuminating unit and the second moving stage, The second illuminating unit is disposed directly above the seating jig during the vision inspection for the inner rim, and the space for photographing the camera is not disturbed by the hollows, thereby reducing space consumption and selectively using the illumination in a simple configuration And to provide a vision inspection apparatus.

In addition, another object of the present invention is to provide a method of manufacturing an injection molding machine, which comprises a transferring step of transferring an injection-molded article to which a transferring part has been supplied by a chucking unit to an auxiliary seating part, The present invention is to provide a vision inspection apparatus capable of selectively illuminating a workpiece by automatically performing an alignment process for allowing the molded products to be seated one by one in an auxiliary seating portion, thereby unnecessarily reducing human labor and significantly increasing processing time.

In addition, another object of the present invention is to provide an injection molding machine comprising a discharge motor for discharging an injection molded product subjected to a vision inspection to a outside and a discharge motor for rotating the end by a drive motor, And to provide a vision inspection apparatus capable of selectively emitting light which can be automatically discharged.

Further, another problem to be solved by the present invention is that the servo robot includes a pair of chucking portions, each of the chucking portions is provided with a pair of chucking units, and the chucking portions are spaced apart from the auxiliary seating portion and the seating jig, The distance between the auxiliary seating portion and the seating jig is set to be equal to the distance between the seating jig and the seating jig and the feeding of the injection molded product from the seating jig to the discharging portion is simultaneously performed in one step, The present invention provides a vision inspection apparatus capable of selectively illuminating an image.

Further, according to another aspect of the present invention, there is provided a detection sensor for detecting whether an injection-molded article is chucked in a chucking unit of a fixed body of each of chucking parts of a servo robot, so that the injection molded part is not correctly chucked, And to provide a vision inspection apparatus capable of selective illumination capable of preventing errors and failures that occur when the projector is dropped and lost.

According to an aspect of the present invention, there is provided a vision inspection apparatus for visually inspecting an injection molded product having an inner frame and an outer frame spaced apart from each other at an upper end thereof, the apparatus comprising: A seating jig provided on an upper surface of the housing and on which an injection molded article supplied from a previous step is seated; A photographing unit which is separated from an upper surface of the housing and is attached to the frame unit so that the focal point is directed to the seating jig, thereby acquiring an image of an injection molded article seated on the seating jig; A first illumination unit installed downwardly of the injection-molded product placed on the seating jig and emitting light so that the illumination is concentrated on an outer edge of the injection-molded article; And a second illuminating unit which is installed upwardly of the injection-molded product placed on the seating jig and emits light so that the illumination is concentrated on the inner rim of the injection-molded article, and the photographing unit illuminates the outer rim And a second photographing for acquiring a clear image with respect to the inner frame by the illumination of the second illumination unit.

According to another aspect of the present invention, the first illumination unit may include a circular plate formed of a hollow circular plate and having one surface thereof held on the upper surface of the housing; A slope plate formed in a strip shape and connected to a rim of the circular plate portion so as to be inclined to increase the inner diameter from the rim toward the outer side; And a plurality of light sources provided on an inner surface of the swash plate to emit light, wherein the first illumination unit is inserted into the hollow of the circular plate with the seating jig.

The second illuminating unit may include a support stage having a rod-like guide member formed of a plate material and having a slide groove formed on a lower surface thereof; A moving stage which is formed on a top surface of the guide member to be inserted into the slide groove of the guide member and is formed of a plate member having a hollow and is movable from the support stage; A disk part formed of a hollow disk and having one surface thereof accommodated on a lower surface of the moving stage; A slope plate formed in a strip shape and connected to a rim of the circular plate portion so as to be inclined to increase the inner diameter from the rim toward the outer side; And the second illumination unit is disposed on the hollow of the movable stage and directly above the hollows of the circular plate when the movable stage is moved, It is preferable that the seating jig is arranged.

Further, in the present invention, the photographing unit may include a vertical driving rail installed vertically to the frame portion, and a lifting / lowering stage formed of a plate member having one side connected to the vertical driving rail and being raised / lowered along the vertical driving rail by driving means And the camera is vertically coupled to the ascending and descending stage.

'자 형상으로 형성되어 상기 컨베이어 벨트에 결합되는 지지프레임; 봉 형상으로 형성되며, 상기 컨베이어 벨트로부터 상향되도록 상기 지지프레임에 결합되는 가이드 봉들; 상기 가이드 봉들 및 상기 컨베이어 벨트의 단부의 직하부에 설치되되 상기 컨베이어 벨트보다 하향되게 설치되어 상기 컨베이어 벨트에 의하여 이송된 사출성형품이 안착되는 판재 형상의 보조 안착부를 포함하고, 상기 가이드 봉들은 상호 이격거리가 상기 이전 공정으로부터 사출성형품을 공급받는 지점에는 상기 컨베이어 벨트의 폭과 동일한 크기로, 상기 보조 안착부에 인접한 지점에는 상기 사출성형품의 외경의 두 배보다 작은 크기로 형성되어 상기 사출성형품이 상기 보조 안착부로 하나씩 안착되도록 상기 사출성형품을 정렬하는 것이 바람직하다.Further, in the present invention, the vision inspection apparatus may further include a conveying unit, and the conveying unit may include a conveyor belt for conveying the injection molded article supplied from the previous process; '

A support frame formed in a shape of " I " and coupled to the conveyor belt; Guide rods formed in a bar shape and coupled to the support frame so as to be upward from the conveyor belt; And a plate-shaped auxiliary seating part installed directly under the end portions of the guide rods and the conveyor belt, the auxiliary seating part being installed downward from the conveyor belt and receiving the injection-molded article conveyed by the conveyor belt, The distance is formed to be equal to the width of the conveyor belt at a point where the injection molded article is supplied from the previous step and to be smaller than twice the outer diameter of the injection molded article at a point adjacent to the auxiliary seating portion, It is preferable to arrange the injection-molded parts so as to be seated one by one on the auxiliary seating part.

The driving motor may include a driving motor coupled to the housing, a discharging portion formed of a plate member, the discharging portion being connected to the driving motor, the discharging portion being inclined so that the end is downwardly protruded outward from the housing And the discharge unit rotates the drive motor according to a result of the vision inspection to separate the injection molded product according to a result of the vision inspection and discharge the injection molded product.

Further, in the present invention, the vision inspection apparatus may further include a servo robot, wherein the servo robot includes a pair of chucking portions for chucking the injection molded article, a front and rear running rails extending from the auxiliary seating portion toward the discharge portion, A moving stage which is formed of a plate member to which the chucking portions are coupled and which is coupled to the front and rear running rails and which moves along the front and rear running rails by driving means and raising and lowering means for raising and lowering the chucking portion, , The spacing distance of the chucking portions when installed on the lower portion of the moving stage is equal to the distance from the auxiliary seating portion to the seating jig and is larger than the distance from the seating jig to the outlet portion.

The first chucking part, which is a chucking part adjacent to the auxiliary seating part, of the chucking parts moves between the auxiliary seating part and the seating jig, and the second chucking part, which is the other side chucking part, A step of transferring the injection molded product from the auxiliary seating portion to the seating jig in one step by moving between the seating jig and the discharge portion; a step of transferring the injection molded product from the seating jig to the discharge portion, It is preferable to simultaneously perform the above processes.

Further, in the present invention, it is preferable that, in the moving stage, a transparent hole is formed immediately under the camera at the time of photographing of the photographing unit, the transparent hole being located directly above the seating jig.

Further, in the present invention, the chucking portions include a fixing plate; A lifting / lowering driving unit coupled to an upper portion of the fixing plate, the lifting / lowering unit being a lifting / lowering unit in which a cylinder is installed and a piston rod of the cylinder is coupled to a lower surface of the moving stage; A fixing body provided at a lower portion of the fixing plate; Supports provided at both ends of the lower portion of the fixture; A moving body to which a cylinder is installed, the piston rod of the cylinder passing through one surface and connected to each of the supports; A pair of chucking units coupled to a lower portion of each of the moving bodies to chuck the injection molded article; Wherein the chucking units of each of the chucking units are arranged so that when the piston rod of the cylinder installed inside the moving body is extended and contracted, .

According to the present invention having the above-described solution, it is possible to obtain a clear image with respect to the outer edge and the inner edge of the suspension bearing by selectively using illumination corresponding to the color and shape of the suspension bearing, Can be significantly increased.

According to the present invention, the first illumination unit or the second illumination unit is installed in the swash plate so that the illumination of the outer edge or inner edge of the vehicle body connecting member of the suspension bearing is concentrated, and is installed at a position downward or upward from the seating jig, The accuracy and reliability of the inspection can be increased.

According to another aspect of the present invention, there is provided a method of manufacturing an injection molding apparatus, comprising: a transferring step of transferring an injection-molded article to which a transferring section has been supplied to an auxiliary seating section as a predetermined position where chucking is performed by a chucking unit; It is possible to reduce unnecessary manpower consumption and to significantly increase the processing time.

According to the present invention, since the discharge portion for discharging the injection molded product subjected to the vision inspection to the outside is composed of the drive motor and the discharge motor for rotating the end portion by the drive motor, the injection molded product is separated and discharged automatically .

Further, according to the present invention, the chucking unit includes a pair of chucking units, and the chucking units are spaced apart from each other by a distance equal to the distance between the auxiliary seating unit and the seating jig, the seating jig and the discharge unit, The transfer of the injection-molded article and the transfer of the injection-molded article from the seating jig to the discharge section can be simultaneously performed in one step, so that the processing time can be more efficiently reduced.

Further, according to the present invention, since the detection sensor for detecting whether the injection-molded article is chucked to the chucking units is provided on the fixed body of each of the chucking parts of the servo robot, the injection molded article is not correctly chucked or chucked, Errors and failures that occur when the power supply is turned off can be prevented in advance.

1 is a perspective view showing a bearing (MSBU) for an automotive suspension.
FIG. 2 is a view of FIG. 1. FIG.
3 is an exemplary view showing a conventional vision inspection apparatus.
4 is a perspective view illustrating a vision inspection apparatus according to an embodiment of the present invention.
Fig. 5 is a perspective view of Fig. 4 taken at different angles. Fig.
6 is a plan view of Fig.
Fig. 7 is a perspective view showing the conveying portion of Fig. 6;
Fig. 8 is a plan view of Fig. 7. Fig.
Fig. 9 is an exploded perspective view showing the servo robot of Fig. 4;
10 is a perspective view showing the chucking portion of Fig.
11 is a side view of Fig.
12 is an exemplary diagram for explaining an operation process of the servo robot of FIG.
13 is a perspective view showing the seating jig shown in Figs. 4 to 6. Fig.
FIG. 14 is a perspective view showing the first illumination unit of FIG. 5; FIG.
15 is a perspective view showing the first illumination unit and the seating jig shown in Fig.
16 is an exploded perspective view showing the second illumination unit of Figs.
17 is an exemplary view showing an operation process of the second illumination unit of FIG.
18 is an exemplary view for explaining the illumination units of the present invention.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 4 is a perspective view showing a vision inspection apparatus according to an embodiment of the present invention, FIG. 5 is a perspective view of FIG. 4 viewed from another angle, and FIG. 6 is a plan view of FIG.

The vision inspection apparatus 1 shown in Figs. 4 to 6 includes a housing 2 having a rectangular shape in which constituent means are installed, and an injection molded article supplied from a previous process, which is conveyed adjacent to the housing 2, A transferring part 3 for aligning the injection molded parts so as to be chucked one by one by the robot 4 and chucking parts 41 of 9 which will be described later which can chuck the injection molded part, A seating jig 5 provided on the upper surface of the housing 2 and on which the injection molded article is placed by the servo robot 4; A photographing section 7 including a frame section 6 provided on the upper surface of the frame section 2 and a camera 71 mounted on the frame section 6 so as to be able to move up and down, ) Is driven to pass through the photographing unit (7) A second illuminating unit 9 installed to be able to slide on the frame unit 6 so as to be able to flow and emitting illumination from the upper part to the lower part when the photographing unit 7 is driven, And a discharging portion 10 for discharging the injection molded product according to whether or not the photographing is completed by the photographing portion 7 and the result of the injection molding is inspected.

The housing 2 is formed as a housing and supports and fixes the construction means 3, 4, 5, 6, 7, 8, 9,

Fig. 7 is a perspective view showing the conveying portion of Fig. 6, and Fig. 8 is a plan view of Fig.

The transferring part 3 shown in Figs. 7 and 8 includes an aligning step of aligning the injection-molded object to be inspected supplied from the previous step, and a step of chucking the injection-molded part by the servo robot 4 adjacent to the housing 2 (The position of the auxiliary seating portion 37) so as to perform the transfer process.

The conveying unit 3 includes a conveyor belt 31 for conveying the supplied injection molded article, a support frame 33 installed upward from the conveyor belt 31, a conveyor belt 31 formed in a rod shape having a length, Guide rods 35 and 35 'which are parallel to and upwardly spaced from the support frame 33 and are arranged at the ends of the conveyor belt 31 adjacent to the housing 2 and are supported by the conveyor belt 31 And an auxiliary seating portion 37 on which the transferred injection-molded article is temporarily seated.

'자 형상으로 형성되어 대향되는 프레임들이 컨베이어 벨트(31)의 양측부에 결합되고, 이에 따라 대향되는 프레임들에 연결되는 프레임은 컨베이어 벨트(31)와 평행하면서 상향 이격되게 설치된다.The support frame (33)

Shaped oppositely disposed frames are coupled to opposite sides of the conveyor belt 31 so that the frames connected to the opposing frames are installed parallel to the conveyor belt 31 and spaced apart upward.

The guide rods 35 and 35 'are formed in a rod shape having a length and are coupled to the support frame 33 in parallel but upward from the conveyor belt 31. At this time, the height of the guide rods 35 and 35 'from the conveyor belt 31 is formed to be smaller than the height from one end of the guide ring 101 of the automotive suspension bearing 100 of FIG. 1 to the extended portion 111 .

The guide rods 35 and 35 'are arranged such that the positions of the guide rods 35 and 35' in a plan view are the same as the distance of the width of the conveyor belt 31, The adjacent points are formed so as to be similar to the diameter of the guide ring 101 of the automotive suspension bearing 100 of Fig. 1 described above, that is, are spaced apart from each other in accordance with the moving direction of the conveyor belt 31, The supplied injection molded articles are aligned by the guide rods 35 and 35 'and discharged to the auxiliary seating portion 37 one by one. At this time, the points of the guide rods 35 and 35 'adjacent to the auxiliary seating portion 37 are formed to be smaller than twice the diameter of the guide ring 101, so that only one suspension bearing 100 is inserted between the spaced distances .

The auxiliary seating portion 37 is formed of a sheet material having an area and is provided on the upper surface of the housing 2 so as to be lower than the end portion of the conveyor belt 31 in a heightwise manner adjacent to the end portion of the conveyor belt 31 in a plane The injection molded articles moving along the conveyor belt 31 are seated by the guide rods 35, 35 'one after another in the auxiliary seating portion 37. At this time, the injection molded article is chucked by the servo robot 4 and transferred to the seating jig 5.

In the present invention, for convenience of explanation, the auxiliary seating portion 37 is simply formed as a fixed plate. However, the shape of the auxiliary seating portion 37 is not limited to that described above. For example, And forming the engaging portion and the grooves.

Fig. 9 is an exploded perspective view showing the servo robot of Fig. 4, Fig. 10 is a perspective view showing the chucking portion of Fig. 9, and Fig. 11 is a side view of Fig.

9 includes a front and rear running rails 43 provided in the front and rear direction and a pair of chucking units 411 and 411 'for chucking The pair of chucking portions 41 and 41 'and the chucking portions 41 and 41' are vertically installed with a gap therebetween and one side is coupled to the front and rear running rails 43, And a moving stage 45 which moves along the rails 43.

The moving stage 45 is configured such that one side thereof is coupled to the front and rear running rails 43 and is movable along the front and rear running rails by the driving means.

In addition, the moving stage 45 is installed at the lower part so that the chucking portions 41 and 41 'are spaced apart in the same direction as the direction of the front and rear running rails.

The movable stage 45 has a through hole 451 formed on one side thereof and having a predetermined area passing through both sides.

As shown in FIGS. 10 and 11, the chucking part 41 includes a fixed plate 410, a lifting and lowering driving part 415 coupled to the upper surface of the fixing plate 410 to move the fixed plate 410 up and down, A supporting body 417 provided at both ends of the lower portion of the fixing body 416 and a piston rod 419 of the cylinder in which a cylinder (not shown) is provided, A chucking unit 411, 411 'coupled to the lower portion of each of the moving bodies 418 to chuck the injection molded article, and a fixed body 416 And a sensing sensor 900 for sensing whether the chucking units 411 and 411 'chuck the injection-molded product. At this time, as the supporting body 417 is coupled to the end of the piston rod 419 of the cylinder of the moving body 418, when the length of the piston rod 419 is extended, the chucking units 411, 411 ' The separation distance between the chucking units 411 and 411 'is increased and when the length of the piston rod 419 is reduced, the chucking units 411 and 411' The spacing distance between the first electrodes 411 'becomes smaller.

That is, the chucking units 41 1 and 41 1 'can be raised and lowered by the lifting and lowering driving unit 415 and the chucking unit 411 is moved in accordance with the displacement of the piston rod of the cylinder of the moving body 418. , 411 'are adjusted.

The inner side surface 421 of the chucking units 411 and 411 'is formed as a flat surface and the outer side surface 423 is formed as a curved surface. And the outer side is expanded outward by the second side wall 424.

In addition, the chucking units 411 and 411 'are inserted into the hollow of the guide ring 101 of the suspension bearing 100 of FIGS. 1 and 2 which are injection molded products, 101 and the engagement step 424 supports the lower surface of the guide ring 101 to chuck the suspension bearing 100. [ At this time, the chucking units 411 and 411 'operate in the reverse order of the chucking process, thereby chucking the chucked suspension bearing 100.

The detection sensor 900 is installed in the fixing bodies 416 of the chucking portions 41 and 41 'and detects whether the injection molded product is chucked in the chucking units 411 and 411' The detection sensor 900 is operated when the injection molds 41 and 41 'are not chucked or the injection molded product is chucked and moved by the chucking portions 41 and 41' When the chucking of the injection-molded part is normally performed by the chucking parts 41 and 41 ', it is possible to perform a vision inspection It is possible to prevent an equipment error and a failure in advance.

The lifting and lowering driving unit 415 is provided with a cylinder therein and the end of the piston rod of the cylinder is coupled to the upper surface of the fixing plate 410 to thereby fix the fixing plate 410 and the chucking units 411 and 411 ' Up and down.

That is, the servo robot 4 is configured such that the chucking portions 41 and 41 'can be moved back and forth and up and down by the moving stage 45 and the raising and lowering driving portion 47.

12 is an exemplary diagram for explaining an operation process of the servo robot of FIG.

12, the chucking portions 41 and 41 'are vertically spaced apart from each other on the lower surface of the moving stage 45 so that the spacing distance L1 between the auxiliary seating portion 37 and the seating jig 5 and the separation distance L3 between the seating jig 5 and the discharge unit 10. [ At this time, the chucking portion 41 adjacent to the auxiliary seating portion 37 of the chucking portions 41 and 41 'is referred to as a first chucking portion and the other chucking portion 41' is referred to as a second chucking portion.

The mutual spacing distance L1 between the chucking portions 41 and 41 'is smaller than the distance between the seating jig 5 and the backing 11, And the chucking portions 41 and 41 'of the servo robot 4 are moved toward the discharge portion 10 by being formed larger than the distance to the end portions of the servo robot 4, The inspection is completed) is located at the top of the back sheet 11.

As described above, the moving stage 45 is provided with chucking portions 41 and 41 'at intervals on the lower surface thereof, and one side thereof is coupled to the front and rear running rails 43 so as to be movable in the forward and backward directions.

The movable stage 45 has a through hole 451 formed on one side thereof and having a predetermined area passing through both sides. At this time, the through hole 451 is disposed directly below the camera 71 and immediately above the seating jig 5 at the time of shooting the camera 71 of the photographing section 7, and at the same time, As shown in FIG.

The operation of the servo robot 4 having such a structure will be described below. The operation of the servo robot 4 will be described. The first chucking part 41 is directly above the auxiliary seating part 37 and the second chucking part 41 ' The moving stage 45 is located directly below the camera 71 and immediately above the seating jig 5 so that the camera 71 is taken and the first chucking part 41 is moved to the auxiliary seating The injection molded product placed on the movable stage 45 is chucked and the second chucking portion 41 'is seated on the seating jig 5 to chuck the injection molded product subjected to the vision inspection, When the first chucking portion 41 is positioned on the upper portion of the seating jig 5 and the second chucking portion 41 'is located on the upper portion of the discharging portion 10 as the first chucking portion 41 moves along the front and rear travel rails 43, The injection molded article chucked in the first chucking section 41 is lowered to the seating jig 5 and the injection molded article chucked in the second chucking section 41 ' ), And these phases It is possible to automatically perform the process of simultaneously supplying the injection molded product to the photographing unit 7 and discharging the injection molded product subjected to the vision inspection to the outside.

The servo robot 4 moves between the auxiliary seating portion 37 and the seating jig 5 while the first chucking portion 41 moves between the auxiliary seating portion 37 and the seating jig 5 and the second chucking portion 41 ' And the discharge part 10 to transfer the injection molded product from the auxiliary seating part 37 supplied to the seating jig 5 by the pair of chucking parts 41 and 41 ' The transfer of the injection-molded product from the seating jig 5 to the discharge portion 10 is performed by one step, and therefore, the process can be performed quickly, thereby shortening the process time efficiently.

The frame portion 6 of Fig. 4 forms a rectangular shape, and is provided on the upper surface of the housing 2. Fig.

And the photographing unit 7 is coupled to the frame unit 6. [

The photographing unit 7 includes a vertical driving rail 73 vertically installed on the frame unit 6 and a vertical driving rail 73 connected to one side of the vertical driving rail 73, A lifting stage 75 coupled to be movable up and down, and a camera 71 coupled to the lifting stage 75 to perform imaging. At this time, various arrangements and methods known in the art can be applied to the construction and the method in which the lifting and lowering stage 75 is moved up and down along the vertical driving rail 73.

The camera 71 is vertically installed on the ascending / descending stage 75 so as to face the seating jig 5 immediately below the focus, and performs photographing to acquire an image. At this time, the obtained image is input to a control unit (not shown) and used for vision inspection.

Further, the camera 71 is moved up and down by the movement of the ascending / descending stage 75, so that the camera 71 can automatically adjust the focus when the focus is not correct.

The camera 71 also performs a first photographing operation for photographing under the illumination output from the first illumination section 8 and a second photographing operation for photographing under the illumination output from the second illumination section 9. Here, the first photographing is for photographing a vision inspection of the outer frame 131 of the vehicle body connecting member 103 of the suspension bearing 100, and the second photographing is for photographing the vehicle body connecting member 103 of the suspension bearing 100, In order to perform a vision inspection on the inner edge 133 of the lens barrel.

13 is a perspective view showing the seating jig shown in Figs. 4 to 6. Fig.

The seating jig 5 shown in FIG. 13 is formed in a columnar shape, and is mounted on the upper surface of the housing 2 positioned immediately under the camera 71, and the suspension bearing 100 is seated thereon.

The seating jig 5 also has a circular seating groove 53 formed on the upper surface 51 from the upper surface 51 to the inside. At this time, the seating groove 53 is formed to have the same diameter as the guide ring 101 of FIG. 1, and the lower portion of the guide ring 101 is inserted into the seating groove 53 to be seated.

In addition, the seating jig 5 has a linear optical signal transmission groove 55 formed on the upper surface thereof and having both ends connected to the seating groove 53.

The seating jig 5 is provided with an optical sensor S for transmitting and receiving optical signals to opposite side walls which are connected in a straight line to the optical signal transmission groove 55. When the injection molded article is seated in the seating groove 53 The control unit (not shown) determines whether the injection-molded product is seated in the seating jig 5 according to whether the optical signal is received or not, using the principle that the optical signal is blocked.

Fig. 14 is a perspective view showing the first illumination unit of Fig. 5, and Fig. 15 is a perspective view showing the first illumination unit and the seating jig of Fig.

14 and 15, the first illuminating unit 8 includes a disc portion 81 having a hollow 811 into which the seating jig 5 is inserted, And a light source 85 provided on the inner surface of the swash plate 83 for emitting light. The swash plate 83 is inclined so as to increase the diameter from the disk 81 toward the outside.

The first illuminating unit 8 constructed as described above has the disc 81 attached to the upper surface of the housing 2 and the seating jig 5 inserted into the hollow 811 and disposed directly beneath the camera 71, Light is emitted from the light source during the first photographing of the camera 71 so that a clear image of the outer frame 131 of the vehicle body connecting member 103 of the suspension bearing 100 is obtained.

FIG. 16 is an exploded perspective view showing the second illumination unit of FIGS. 4 to 6, and FIG. 17 is an exemplary view showing an operation process of the second illumination unit of FIG.

The second illuminating unit 9 of FIG. 16 is disposed inside the frame unit 6 when it is slidingly coupled to the frame unit 6 and is not moved. When the second illuminating unit 9 is moved, the second illuminating unit 9 is disposed between the camera 71 and the seating jig 5 And is disposed immediately below the camera 71 in the second photographing of the camera 71 to output the illumination to focus the illumination on the inner edge 133 of the vehicle body connecting member 103 of the suspension bearing 100. [

The second illuminating unit 9 includes a disc 91 having a hollow 911 formed in the same shape as the first illuminating unit 8, a swash plate 93 and a light source 95, A support stage 97 on which a rod-like guide member 971 having a slide groove 973 is provided and a hollow plate 993 having the same diameter as the hollow 911 of the second illumination unit 9 And a second moving stage 99 on which a protrusion 991 to be slidably inserted into the slide groove 973 of the guide member 971 is formed on the upper surface. At this time, the disc portion 91 is received in the lower surface of the second moving stage 99, and the light source 95 emits light toward the lower side.

17, the second illuminating section 9 constructed as above is arranged such that the second moving stage 99 is moved to the lower portion of the camera 71 in the second photographing of the camera 71, The hollow space 911 of the first moving stage 91 and the hollow space 993 of the second moving stage 99 are moved so as to be disposed immediately below the camera 71. When light is emitted from the light source 95 in this state, Can acquire a clear image of the inner edge 133 of the vehicle body connecting member 103 of the suspension bearing 100. [

18 is an exemplary view for explaining the illumination units of the present invention.

The vision inspection apparatus 1 according to an embodiment of the present invention is configured to selectively use the first illumination unit 8 and the second illumination unit 9 in correspondence with the characteristics and color of the suspension bearing 100, .

That is, in the vision inspection apparatus 1, light is output from the first illumination unit 8 at the time of first imaging and light output from the first illumination unit 8 is concentrated at the outer edge 131 of the suspension bearing 100, Accordingly, it is possible to acquire a clear image of the outer edge of the suspension bearing 100.

The second illumination unit 9 moves in a sliding manner as described above in the second photographing operation and the illumination is outputted from the second illumination unit 9 in this state, The output light is concentrated on the inner edge 133 of the suspension bearing 100, so that a clear image of the inner edge of the suspension bearing 100 can be obtained.

4 is a device installed on the upper surface of the housing 2 to discharge the injection molded product subjected to the vision inspection to the outside.

The discharge unit 10 includes a drive motor (not shown) installed on the upper surface of the housing 2 to generate a rotational force and a discharge plate 11 formed of a plate member whose lower surface is coupled to the drive motor.

Further, the back plate 11 is formed with guide walls 12 perpendicular to the widthwise rim.

The side plate 11 is disposed on the inner side of the housing 2 on one side and the outer side of the housing 2 on the other side when viewed in a plan view and is inclined downward as viewed from one side toward the other side By coupling to the driving motor, the downwardly directed end of the driving motor rotates, and the injection molded product can be separated and discharged according to the result of the vision inspection.

The operation of the discharge unit 10 constructed as described above will be described below. When the discharge unit 10 receives the injection molded product having been subjected to the vision inspection by the second chucking unit 41 ' The discharge motor 11 rotates as the drive motor is rotated at a predetermined rotation angle, so that the injection molded product can be separated and discharged.

1: Vision inspection device 2: Housing 3:
4: servo robot 5: seating jig 6: frame part
7: photographing section 8: first illumination section 9: second illumination section
10: discharging part 11: conveying belt 31: conveyor belt
33: support frame 35, 35 ': guide rod 37: auxiliary seating part
41, 41 ': chucking part 43: front and rear running rail 45: moving stage
71: Camera

Claims (10)

A vision inspection apparatus for inspecting an injection molded product having an inner frame and an outer frame separated from each other at an upper end thereof, the vision inspection apparatus comprising:
A housing having a frame portion on an upper surface thereof;
A seating jig provided on an upper surface of the housing and on which an injection molded article supplied from a previous step is seated;
A photographing unit which is separated from an upper surface of the housing and is attached to the frame unit so that the focal point is directed to the seating jig, thereby acquiring an image of an injection molded article seated on the seating jig;
A first illumination unit installed downwardly of the injection-molded product placed on the seating jig and emitting light so that the illumination is concentrated on an outer edge of the injection-molded article;
And a second illumination unit installed upwardly of the injection-molded product placed on the seating jig and emitting light so that the illumination is concentrated on the inner edge of the injection-molded article,
The photographing unit performs a first photographing for acquiring a clear image of the outer frame by the illumination of the first illumination unit and a second photographing for acquiring a clear image of the inner frame by the illumination of the second illumination unit Wherein the vision inspection apparatus comprises: The apparatus of claim 1, wherein the first illumination unit
A circular plate formed of a hollow circular plate and having one surface thereof held on the upper surface of the housing;
A slope plate formed in a strip shape and connected to a rim of the circular plate portion so as to be inclined to increase the inner diameter from the rim toward the outer side;
And a plurality of light sources provided on an inner surface of the swash plate to emit light,
Wherein the first illumination unit is inserted with the seating jig into the hollow of the disk unit. The apparatus of claim 2, wherein the second illumination unit
A support stage having a rod-like guide member formed of a plate material and formed on a lower surface of a slide groove at a lower portion thereof;
A moving stage which is formed on a top surface of the guide member to be inserted into the slide groove of the guide member and is formed of a plate member having a hollow and is movable from the support stage;
A disk part formed of a hollow disk and having one surface thereof accommodated on a lower surface of the moving stage;
A slope plate formed in a strip shape and connected to a rim of the circular plate portion so as to be inclined to increase the inner diameter from the rim toward the outer side;
And a plurality of light sources provided on an inner surface of the swash plate to emit light,
Wherein the second illumination unit is configured such that the camera is disposed immediately below the hollow of the moving stage and the hollows of the disc when the moving stage moves, and the seating jig is disposed immediately below the camera. The image pickup apparatus according to claim 3,
Further comprising a vertical moving rail vertically installed on the frame portion and a vertical moving rail formed by a plate member having one side connected to the vertical driving rail and being raised and lowered along the vertical driving rail by a driving means,
Wherein the camera is vertically coupled to the ascending / descending stage. The apparatus according to claim 4, wherein the vision inspection apparatus further comprises a transfer unit,
The conveying portion
A conveyor belt for conveying the injection molded article supplied from the previous process;
'

A support frame formed in a shape of " I " and coupled to the conveyor belt;
Guide rods formed in a bar shape and coupled to the support frame so as to be upward from the conveyor belt;
And a plate-shaped auxiliary seating part installed directly under the end portions of the guide rods and the conveyor belt, the plate-shaped auxiliary seating part installed downward from the conveyor belt to receive the injection-molded part conveyed by the conveyor belt,
The guide rods are formed at a size that is equal to the width of the conveyor belt at a position where the injection molding product is supplied from the preceding process and smaller than twice the outer diameter of the injection molded product at a position adjacent to the auxiliary seating portion, And aligning the injection-molded part so that the injection-molded part is seated one by one on the auxiliary seating part. [Claim 6] The driving device according to claim 5, further comprising: a driving motor coupled to the housing; and a discharge plate coupled to the driving motor, the lower surface being formed of a plate material and inclined so that an end thereof is downwardly, Further comprising a discharge portion,
Wherein the discharge unit rotates the drive motor according to a result of the vision inspection to separate the injection molded product according to a result of the vision inspection and discharge the injection molded product. The vision inspection apparatus according to claim 6, further comprising a servo robot,
The servo robot
A pair of chucking parts for chucking the injection molded part, a front and rear running rails in a direction toward the discharge part from the auxiliary seating part, and a plate member to which the chucking parts are coupled at a lower part, A moving stage that moves along the front and rear running rails by driving means and an elevating and lowering means for moving the chucking portion up and down,
Wherein the chucking portions are spaced apart from each other when the chucking portion is installed at a lower portion of the moving stage and are longer than a distance from the seating jig to the discharge portion, . [7] The apparatus according to claim 7, wherein the chucking portions are formed as a pair, and a first chucking portion, which is a chucking portion adjacent to the auxiliary seating portion, of the chucking portions moves between the auxiliary seating portion and the seating jig, The second jig for moving the injection molded product from the auxiliary seating part to the seating jig in a single process by moving between the seating jig and the discharge part, and a step for moving the injection molded product from the seating jig to the discharge part And the step of transferring the image is carried out simultaneously. The vision inspection apparatus according to claim 8, wherein the moving stage is provided with a through hole located immediately under the camera at a position immediately above the seating jig when the photographing unit is photographed. 10. The apparatus of claim 9, wherein the chucking portions
A fixing plate;
A lifting / lowering driving unit coupled to an upper portion of the fixing plate, the lifting / lowering unit being a lifting / lowering unit in which a cylinder is installed and a piston rod of the cylinder is coupled to a lower surface of the moving stage;
A fixing body provided at a lower portion of the fixing plate;
Supports provided at both ends of the lower portion of the fixture;
A moving body to which a cylinder is installed, the piston rod of the cylinder passing through one surface and connected to each of the supports;
A pair of chucking units coupled to a lower portion of each of the moving bodies to chuck the injection molded article;
And a detection sensor for detecting whether the injection-molded article is chucked by the chucking units,
Wherein the chucking units of the respective chucking portions increase and decrease the distance when the piston rod of the cylinder installed in the moving body is extended and contracted.

Images