JP2008105811A - Visual inspection device of workpiece - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a visual inspection device of a workpiece capable of inspecting the conveying state of the workpiece over the whole with observation so as to secure stable posture of various rotary disk for conveying workpieces and driving means thereof and so as to quickly correspond even if a conveying trouble is caused in a workpiece transference path. <P>SOLUTION: Conveying disks D1, D2 and D3 are horizontally arranged in a conveyance line 6, and an inspecting rotary disk 22 is horizontally arranged in a workpiece inspection section 21. The rotary disks D1, D2, D3 and 22 are coupled to driving means Md1, Md2, MD3 and M4 of which driving shafts J1, J2, J3 and J22 are directed upward. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a work appearance inspection apparatus that picks up an image of a work such as an IC chip or a chip component such as a chip-type capacitor by an image pickup means and sorts the work into a non-defective product and a defective product.

  A work such as a chip component such as an IC chip or a chip-type capacitor is inspected by an inspection device for inspecting the scratches and selecting the type and size thereof, and is supplied to a packaging line. This workpiece visual inspection apparatus is a workpiece alignment supply unit that aligns and conveys a loaded workpiece, and a workpiece that is picked up from multiple angles by imaging the workpiece supplied from the workpiece alignment supply unit, and inspecting and sorting the quality of these workpieces. Consists of an inspection unit. The workpiece alignment and supply unit includes a vibration type that moves while aligning the workpieces by vibration, and a workpiece that is placed in the outer peripheral wall by applying centrifugal force to the workpiece that has been put in the workpiece loading unit. Non-vibration type that transfers workpieces by methods other than vibration, such as transferring

  Examples of the workpiece appearance inspection apparatus include apparatuses according to Patent Documents 1 to 4. The workpiece inspection unit (inspection apparatus 1) according to Patent Document 1 uses a plurality (six) of imaging means (cameras C1 to C6) to supply workpieces (micro objects) supplied from a workpiece alignment supply unit (not shown). The work (micro object) is sequentially inspected and picked up. The workpiece inspection unit (inspection apparatus 1) includes a first feeder 2 and a second feeder 6 that linearly transfer workpieces supplied from a workpiece alignment supply unit, and downstream of the first feeder 2 and the second feeder 6. At the end, there are first and second rotary tables (rotations) which have a rotation axis in the same direction as the workpiece moving direction of these feeders 2 and 6 and rotate the workpieces transferred from the feeders 2 and 6 in a vertical posture. Discs) are provided.

  Patent Document 2 discloses a feeder that aligns and conveys minute objects (workpieces) to be inspected, and a disk-shaped rotating indexer (inspection rotating disk) that is rotated by forming a storage groove that accommodates minute objects on the outer peripheral side surface. A non-vibration relay stand that is positioned between the feeder and the rotary indexer and that is aligned and conveyed from the feeder to the storage groove of the rotary indexer, and a first object that sucks the micro object that has moved to the non-vibration relay stand The disk-shaped rotary indexer is arranged in a horizontal state with the storage groove down, and is horizontally rotated by the driving means arranged above the suction means, and a driving means for rotating the rotary indexer. A suction groove continuous with the second suction means for sucking a minute object stored in the storage groove from above is provided, and the vibration-free relay stand is disposed in proximity to the horizontal rotation indexer, Appearance inspection apparatus of the minute object is disclosed, wherein for accommodating the small object from the lateral direction in the receiving groove of the rotational indexer flat state.

Patent Document 3 discloses a work alignment supply unit (part feeder 5) that linearly aligns and transfers the input workpieces, and a workpiece supplied from the work alignment supply unit (part feeder 5) with an imaging unit ( And a work inspection unit that picks up and sorts images by cameras C1 to C4). Further, the workpiece inspection unit includes imaging means (cameras C1, C2) for imaging two surfaces of the workpiece.
) In the proximity of the first inspection rotating disk (first rotating disk 10) and the imaging means (cameras C3 and C4) for imaging the other two surfaces of the workpiece in the proximity of the second inspection A rotating disk (second rotating disk 20) is included. The workpiece which has been transferred from the workpiece alignment supply unit (part feeder 5) to the first inspection rotating disk (first rotating disk 10) and imaged on two surfaces is further supplied to the second inspection rotating disk ( The image is transferred to the second rotating disk 20) and the other two surfaces are imaged. Here, in the first inspection rotating disk (first rotating disk 10), the work is placed and transferred on the upper surface, but in the second inspection rotating disk (second rotating disk 20). The work is sucked and held on its side surface and transferred. That is, the work is adsorbed by the plurality of suction holes 31 provided on the side surface of the second inspection rotating disk (second rotating disk 20), and is rotated and transferred in this state.
In addition, the present applicant has received a patent for the first rotating indexer and the second rotating indexer that rotate by a continuous rotation method using a vertical arrangement, and suck a workpiece on the outer peripheral side surface (Patent Literature). 4). Further, as a work alignment supply unit constituting the work visual inspection apparatus, a vibration-free (rotary feeder type) work alignment supply apparatus has already been filed (Japanese Patent Application No. 2005-220663).
JP 2002-113427 A Japanese Patent No. 3511025 JP 2004-345859 A Japanese Patent No. 3814278

  However, the workpiece inspection unit (inspection apparatus 1) according to Patent Document 1 is provided with the first and second rotary tables that rotate the workpiece in a vertical posture (back-vertical direction). There is a problem that the apparatus becomes larger.

  Japanese Patent Application Laid-Open No. H10-228561 has a rotating indexer (inspection rotating disk) that rotates the workpiece in the horizontal direction. However, in Patent Document 2, the driving means of the rotary indexer is disposed above, so that not only the apparatus becomes bulky but also a suction groove continuous with the second suction means for sucking a minute object from above is provided. Although the suction is performed so as to be suspended, there is a problem that if an unexpected situation such as the suction being interrupted occurs, the workpiece falls downward. The first inspection rotating disk (first rotating disk 10) according to Patent Document 3 is transferred by placing a work on the upper surface thereof, but the second inspection rotating disk (second rotating disk 20). Since the work is attracted and held on the side surface and transferred, as in Patent Document 2, there is a problem in the case where an unexpected situation such as suction is interrupted.

  In Patent Documents 1 to 3, the work positioned on the opposite side of the operation position of the operator is invisible to the operator while the inspection rotating disk sucks and holds the work. For this reason, there is a problem that when an abnormality in the workpiece conveyance occurs, it is not possible to quickly cope with the abnormality.

  Further, in Patent Documents 2 to 4, the workpiece is sucked so as to be suspended, or the workpiece is sucked on the outer peripheral side surface of the vertical arrangement, and this requires a large suction force by the suction means, A complicated structure such that a suction groove or the like connected to the suction hole has to be provided in the inspection rotating disk has to be provided.

  Accordingly, an object of the present invention is to ensure a stable posture of various rotating disks and their driving means for conveying a work, and to be able to cope with high-speed conveyance, and to have a structure capable of reliably sucking a work even with a weak suction force, In addition, an object of the present invention is to provide a workpiece appearance inspection apparatus capable of inspecting while observing the entire conveyance state of a workpiece so as to be able to respond quickly even if conveyance abnormality occurs in the workpiece transfer path.

  A workpiece appearance inspection apparatus according to claim 1 of the present invention includes a workpiece alignment supply unit that aligns and supplies an input workpiece, a workpiece inspection unit that images the workpiece supplied from the alignment supply unit by an imaging unit, In a workpiece visual inspection apparatus that is arranged between a workpiece alignment supply unit and a workpiece inspection unit and transports an aligned workpiece to the workpiece inspection unit, a rotary disk for conveyance is horizontally arranged on the conveyance line. An inspection rotating disk is horizontally arranged in the work inspection section, and these rotating disks are connected to each driving means whose drive shaft is directed upward. Here, according to the present invention, the workpiece alignment supply unit for aligning the charged workpieces includes a rotating rotary disk for rotating the loaded workpieces, and an alignment for rotating by forming a workpiece transfer path in the circumferential direction. Preferably, each rotating disk is arranged horizontally, and is connected to each driving means whose drive shaft is directed upward (Claim 2).

  According to the present invention, the workpiece transferred from the alignment supply unit of the workpiece to the conveyance line is placed on the upper surface of the conveyance rotary disk and conveyed, and then conveyed along the upper surface of the inspection rotary disk to be in a predetermined position. The image is picked up by the image pickup means. Since all rotating disks including the work alignment supply unit are arranged horizontally and the driving shaft is connected to the driving means directed upward, various rotating disks and stable postures of the driving means are ensured. In addition to being able to cope with high-speed conveyance, both are constituted by horizontal rotating disks, so that inspection can be performed while observing the entire conveyance state of the workpiece.

  According to a third aspect of the present invention, the inspection rotating disk is made of transparent glass, and image pickup means for picking up an image of a work conveyed on the upper surface from the lower surface is arranged at a predetermined position of the inspection rotating disk. It is characterized by.

  According to the present invention, it is possible to pick up an image of the work conveyed on the upper surface by the image pickup means from the lower surface with the transparent inspection rotating disk made of glass.

  According to a fourth aspect of the present invention, a workpiece is sucked by a suction means through a suction ring in which a suction hole is formed on the upper surface of the inspection rotating disk and a suction slit having a predetermined length is formed below the suction hole. It is characterized by doing.

  According to the present invention, when the workpiece transferred from the conveyance line to the inspection rotating disk is placed on the upper surface of the inspection rotating disk, the workpiece is sucked and conveyed by the suction force from the suction hole on the upper surface. The workpiece is sucked from the suction hole while being placed on the upper surface of the transport disk, so that the workpiece is reliably sucked and held even with a weak suction force, and the workpiece is transported.

  According to a fifth aspect of the present invention, the upper surface of the inspection rotating disk is disposed below the upper surface of the conveying rotating disk, and the outer peripheral end side of the inspection rotating disk and the outer peripheral end side of the conveying rotating disk are Are arranged so as to partially overlap.

  According to the present invention, when the workpiece is transferred from the conveying rotating disk to the inspection rotating disk, the workpiece is conveyed with an interval even if the workpiece is in a connected state due to the step and the time difference at that time. Become. Further, since the outer peripheral end side of the inspection rotating disk is arranged so as to partially overlap the outer peripheral end side of the conveying rotating disk, the conveying distance can be shortened by that amount, and the work appearance inspection apparatus It becomes the structure which suppresses enlargement.

  According to a sixth aspect of the present invention, the inspection rotating disk is disposed close to the conveying rotating disk so that the work is guided from the conveying rotating disk to the inspection rotating disk. A guide is arranged.

  According to the present invention, since there is no step when the workpiece is transferred from the conveying rotary disk to the inspection rotating disk, the workpiece is moved along the guide from the conveying rotary disk to the inspection rotating disk without being inclined. Can be moved. It should be noted that by increasing the rotation speed of the inspection rotating disk compared to the conveying rotating disk, even workpieces connected in a conveying line are conveyed with an interval.

  A seventh aspect of the present invention is characterized in that a blowing passage through which compressed air from the blowing means is supplied is formed in the inspection rotating disk.

  According to the present invention, after the work is imaged by the imaging means at a predetermined position, the result of the appearance inspection is judged by the control means. By being supplied, it is discharged to an external chute or the like.

  According to the work aligning and supplying apparatus of the present invention, various rotary disks are horizontally arranged and connected to each drive means whose drive shaft is directed upward. While being able to arrange in a stable state, the rotating disk can be driven in a stable state without difficulty. Therefore, it is possible to cope with high-speed rotation of various types of rotating disks and also to reduce the size of the apparatus. In addition, since the workpiece transferred from the alignment supply unit to the inspection unit via the conveyance line is placed on the upper surface of the inspection disk and conveyed, the workpiece is conveyed in a stable posture and If no obstacle is arranged on the side, even when an operator or the like observes, the inspection can be performed while observing the state of conveyance of the workpiece from above, and it becomes possible to quickly cope with abnormalities in workpiece conveyance. Further, the workpiece is sucked by the suction hole while being placed on the upper surface of the inspection rotating disk, so that the workpiece can be reliably sucked and held even with a weak suction force.

The best mode for carrying out the present invention will be described below with reference to the drawings.
(First embodiment)
The present embodiment is a workpiece appearance inspection apparatus I that inspects a workpiece A such as a chip component such as an electronic element or an electronic circuit by an imaging means. FIG. 1 is a perspective view showing an internal structure of a workpiece inspection apparatus I according to the present embodiment. FIG. 2 is a cross-sectional view showing the internal structure of the workpiece alignment supply unit. FIGS. 3A and 3B are plan views showing a slide structure of the workpiece alignment supply unit. The workpiece inspection apparatus I linearly aligns and feeds the loaded workpiece A and picks up the workpiece A supplied from the workpiece alignment supply unit 1 from various angles, and determines the quality of these workpieces. The work inspection unit 21 and the like that are inspected and selected are arranged above a housing Da having casters Ca at the bottom (FIG. 9). Reference numeral Hp denotes a hopper that supplies the workpiece A to the workpiece alignment supply unit 1. Reference symbol Dl denotes a monitor screen (liquid crystal display), which is disposed at a location where a corner portion of the housing Da is notched. Here, FIG. 7 is a diagram for explaining the type of the workpiece A to be conveyed, and there are a rectangular parallelepiped workpiece A as shown in FIG. 7A and a flat plate-like workpiece A thinner than this (FIG. 7). (B)) In the case of a rectangular parallelepiped workpiece A as shown in FIG. 7 (a), its six surfaces are imaged. In the case of the workpiece A shown in FIG. 7 (b), its upper surface (J surface) and lower surface. It is assumed that only the (K plane) is imaged by the imaging means F1 and F5.

  The workpiece alignment supply unit 1 aligns the loading rotary disk 2 into which the workpiece A is loaded, the alignment rotating disk 3 that forms the transfer path 3a of the workpiece A in the circumferential direction, and the workpiece A from the loading rotary disk 2. The rotating member 5 for delivery to the rotating disk 3 for transfer, the rectangular base B disposed on the outer peripheral side of the rotating disk 2 for loading and the rotating disk 3 for alignment, and a slide member having alignment walls 7 and 8 S1 and S2 and an unloading line 6 for unloading the workpiece A to supply the workpiece inspection unit 21 are main constituent members (FIGS. 3 and 4). The discharge line 6 is provided with a linear alignment wall 9 on the discharge side facing the alignment wall 8, and rotating rotary disks D <b> 1 to D <b> 3 as conveying means for the workpiece A.

  The work inspection unit 21 includes a rotation path 22 for inspection that forms a transfer path 22a for the work A in the circumferential direction, receives the work A transferred from the discharge line 6, and rotates and conveys the work A. Further, in the vicinity of the inspection rotating disk 22, there are arranged imaging means F1, F2, and the like for checking the quality of whether or not the workpiece A is a non-defective product when the workpiece A is at a predetermined position on the transfer path.

  The loading rotary disk 2 is for loading a predetermined amount of workpiece A and is formed as a horizontal dish, that is, having a concave inner peripheral surface 2c (FIG. 2). A central wall 2t is formed at the center of the loading rotary disk 2, and a cross section from the bottom 2a to the inner peripheral surface 2c is formed like a donut-shaped groove. That is, the inner peripheral surface 2c having a gentle curvature is formed from the bottom 2a to the outer upper end P1. The throwing rotary disk 2 has a drive shaft L1 at the center thereof, and is driven to rotate by a drive motor M1 connected to the drive shaft L1. The center G of the diameter when adjusting the arc-shaped diameters a1 and a2 of the alignment walls 7 and 8, which will be described later, coincides with the position of the drive shaft L1.

  The rotating disk 3 for alignment is for aligning the workpieces A, and is formed as a horizontal dish, that is, having a concave peripheral wall 3c. On the upper surface of the concave peripheral wall 3c, a transfer path 3a for conveying the work A while aligning it is formed. In the transfer path 3a, the width interval H is gradually narrowed, and the width interval H3 at the narrowed final position is set to coincide with the width interval h of the workpiece A to be conveyed (FIG. 3A). . That is, by adjusting the width interval H3 of the transfer path 3a, only those that are placed on the width interval H3 of the transfer path 3a are aligned and conveyed. It is carried out by the sliding operation of the sliding members S1, S2 having The alignment rotary disk 3 is also of a horizontal type like the input rotary disk 2, and the input rotary disk 2 and the alignment rotary disk 3 are fitted in a groove Ba provided substantially at the center of the base B. The input rotary disk 2 is housed in the aligned rotary disk 3.

  The rotating disk 3 for alignment is connected to a bearing L2 that rotates at the same position as the drive shaft L1, and an endless belt V2 is stretched between the bearing L2 and a pulley Pa that is rotated by a drive motor M2. The motor M2 is rotationally driven. That is, the center G of the diameter when adjusting the arcuate diameters a1 and a2 of the alignment walls 7 and 8 described later coincides with the center of the bearing L2.

  The workpiece A loaded into the loading rotary disk 2 is disposed close to the outer upper end P1 of the concave inner peripheral surface 2c of the loading rotary disk 2 and the inner upper end P2 of the concave peripheral wall 3c of the alignment rotating disk 3. Are arranged so that the concave peripheral wall 3c of the rotating disk 3 for alignment does not come into contact. The inner peripheral surface 2c of the loading rotary disk 2 and the peripheral wall 3c of the alignment rotary disk 3 are provided such that the upper ends P1 and P2 thereof are at the same position with a slight gap. Here, the workpiece A is pulled up so as to cross the positions of the upper end portions P1 and P2, and the crossing position is referred to as an intersection T described later. A predetermined amount of air is ejected from the gap between the input rotary disk 2 and the alignment rotary disk 3 so that dust does not enter the gap.

  The transfer rotary disk 5 is for transferring the workpiece A from the input rotary disk 2 to the aligning rotary disk 3, and is disposed obliquely with respect to the horizontal input rotary disk 2. The delivery rotating disk 5 has an arm (not shown) connected to the central portion 5c, and is inclined with respect to the donut-shaped groove, that is, from the bottom 2a on one side of the loading rotating disk 2. It arrange | positions so that it may slidably contact over the surrounding surface 2c. That is, the workpiece A is gradually removed from the bottom portion 2a while the outer peripheral end of the transfer rotating disc 5 is in sliding contact with the inner peripheral surface 2c formed as a gentle curvature from the bottom portion 2a of the loading rotary disc 2 to the outer upper end portion P1. It is the structure pulled up so that it may follow along the concave inner peripheral surface 2c. The transfer rotary disk 5 has a diameter that is less than half the diameter of the input rotary disk 2 and places the workpiece A that has been input to the input rotary disk 2 on its outer peripheral edge, The workpiece A placed on the end is transferred to the transfer path 3a at the position of the intersection T intersecting the transfer path 3a of the rotating disk for alignment.

  The angle at which the transfer rotating disk 5 is in sliding contact with the bottom 2a of the loading rotating disk 2 is a gentle inclination angle of about 25 degrees. In the present embodiment, it is to make contact with the inner peripheral surface 2c from the bottom 2a of the gentle curvature of the input rotary disk 2, but further, the input rotary disk 2 is horizontal and has a shallow bottom. This is because the situation in which the workpiece A slides on the transfer rotary disk 5 at a gentle inclination angle is suppressed, and when the workpiece A is dropped too much, a gentle inclination angle is preferable. Further, in the transfer rotating disk 5, four through holes 5 a through which the work A can be passed are formed, and when the work A thrown into the throwing rotary disk 2 is stacked, the through hole is formed. The extra work A is returned to the concave bottom 2a of the loading rotary disk 2 from 5a.

  The transfer path 3a of the rotating disk 3 for alignment is formed in the circumferential direction of the upper surface 3a of the concave peripheral wall 3c, and the width interval H of the transfer path 3a is transferred while being gradually narrowed by the alignment walls 7 and 8 (H3 <H2 <H1). One of the alignment walls 7 and 8 is formed of a straight alignment wall 7y and a first arc-shaped alignment wall a1, and the other second alignment wall 8 is a second circle. An arcuate alignment wall a2 and a linear alignment wall 8y are formed. The combination of the first arcuate alignment wall a1 and the second arcuate alignment wall a2 has a predetermined arcuate alignment wall a1. a2 is configured. That is, the work A, which has been pulled up by the alignment rotary disk 3 onto the transfer path 3a of the alignment rotary disk 3 at the intersection T, rotates and conveys the arc-shaped transfer path 3a of about 180 degrees to carry out a straight line. The position to be supplied to the line 6 and pulled up is the position of the linear alignment wall 7y of the one first alignment wall 7, and the arc-shaped transfer path 3a of about 180 degrees from this position. And is transferred between the linear alignment wall 8y of the other second alignment wall 8 and the linear alignment wall 9 (unloading line 6).

  The change of the predetermined arc shape of the first and second arc-shaped alignment walls a1 and a2 can be slid in the Y direction by the second slide member S2. The second arcuate alignment wall a2 can be slid in the X direction by the second slide member S2. The first and second alignment walls 7 and 8 are provided on the slide members S1 and S2 and slide to form approximately 180-degree alignment walls a1 and a2. The slide members S1 and S2 are disposed on the base B and are disposed on the first slide member S1 that is slid in the vertical direction (Y direction in the drawing) of the base B and the first slide member S1. The second slide member S2 is slid in the lateral direction (X direction in the figure) of the base B, and the first slide member S1 has the first arc-shaped alignment wall a1 and is The second slide member S2 has the second arcuate alignment wall a2. More specifically, the work A is rotated and conveyed by about 180 degrees on the transfer path 3a and supplied to the linear unloading line 6, that is, the first circular transfer path a1 of about 90 degrees from the intersection T. Is formed by the first arcuate alignment wall a1, and the second arcuate transfer wall a2 of the second alignment wall 8 forms the next arc transfer path a2 of about 90 degrees. (FIGS. 3A and 3B). When the first arc-shaped alignment wall a1 and the second arc-shaped alignment wall a2 are combined, depending on how the arc is formed, the arc shape a1 and a2 can be made larger, or the arc shape a1 It is possible to change a2 itself. The first alignment wall 7 and the second alignment wall 8 are connected to each other by slide surfaces 7a and 8a having surfaces parallel to the X direction. That is, the first alignment wall 7 and the second alignment wall 8 are connected to each other at the position S in FIG. 3A, and the shapes of the arc-shaped alignment walls a1 and a2 are changed. Can do.

  The slide members S1 and S2 can be slid in the vertical and horizontal directions (Y direction and X direction of the base B) by the adjusting screws Sn1 and Sn2 and the key grooves Sx and Sy. In the slide member S1, a key groove Sy cut out in the Y direction is formed in parallel. On the other hand, the base B is provided with a key kk that fits into the key groove Sy. Then, a notch SK in which the adjusting screw Sn1 for adjusting the screw in the Y direction is arranged is formed, and a screw receiver B1 is arranged on the base B located in the notch SK, and the first slide member at that position. A screw receiver B2 is also arranged in S1, and an adjusting screw Sn1 is arranged between these screw receivers B1 and B2. In the slide member S2, a key groove Sx cut out in the X direction is formed in parallel, and the first slide member S1 is provided with a key kk that fits in the key groove Sx. A notch SK in which the adjusting screw Sn2 for adjusting the screw in the X direction is arranged, and a screw receiver B3 and a screw receiver B4 are arranged in the notch SK, and between these screw receivers B3 and B4. An adjusting screw Sn2 is arranged.

  When the first and second arcuate alignment walls a1 and a2 are slid in the Y direction, the first and second arcuate alignment walls a1 are rotated by turning the adjusting screw Sn1 and sliding the slide member S1. And a2 slide simultaneously (FIG. 3A). On the other hand, when the second arcuate alignment wall a2 is slid in the X direction, when the adjusting screw Sn2 is turned, the slide member S2 slides and the second arcuate alignment wall a2 can be slid. (FIG. 3B). Thereby, the width interval H of the transfer path 3a of the rotating disk 3 for alignment can be adjusted in accordance with the size of the work A or the direction of alignment.

  In the transfer path 3a, a sorting plate 16 and an air nozzle 17 are provided (FIGS. 5 and 6). The sorting plate 16 regulates the height of the workpiece A (reference numeral A1 indicates a stacked workpiece), that is, the workpiece A is transferred to the transfer path 3a in a multi-stacked state, or the rectangular electronic element. (Chip part) When the Q surface or N surface of C is transferred with the bottom surface as the bottom surface (the Q surface or N surface is transferred in contact with the transfer path 3a), these do not pass through, but the loading rotary disk 2 plays a role of dropping to the bottom 2a. Arranging a plurality of such alignment plates 16 is optional depending on the implementation.

  The air nozzle 17 is installed so as to cross the transfer path 3a and protrude to the loading rotary disk 2 side, and the work A in a state of protruding from the transfer path 3a to the loading rotary disk 2 side, or a workpiece of different orientation A is blown off to the bottom 2a of the loading rotary disk 2 (reference A2 is an example in which the longitudinal direction of the workpiece A protrudes to the transfer path 3a), and a plurality of A are disposed. For example, when the above-mentioned rectangular workpiece A is transferred with the longitudinal direction of the workpiece A as the width interval H3 of the transfer path 3a, rotation is performed by applying air to the protruding part of the workpiece A with respect to the transfer path 3a. Blow off the bottom 2a of the disk 2. Although not shown, a sensor that reads the front and back surfaces of the workpiece A and reads the symbols (product symbols) on the outer periphery is attached, and air is blown in response to this sensor to pass only the specified workpiece. Otherwise, it may be dropped on the bottom 2a of the loading rotary disk 2. Here, air suction is performed with a negative pressure from the horizontal boundary surface gap between the alignment wall 8 and the transfer path 3a, so that the workpiece A reliably comes into contact with the alignment wall a2 and the discrimination accuracy is increased. It is sent to the carry-out line 6.

  On the unloading line 6 side, a unloading line 6 for the workpiece A is formed by the linear alignment wall 9 and the linear alignment wall 8y of the second alignment wall 8, and the workpiece A is transported to the unloading line 6. Transport rotary disks D1, D2, and D3 are installed (FIGS. 1, 4, and 8). The conveying rotating disks D1, D2, D3 have a rotating surface (upper surface) that is flush with the transfer path 3a, and guides the workpiece A in the carry-out line 6 to the workpiece inspection unit 21 on the upper surface. More specifically, a base member is disposed at the bottom of the discharge line 6, and sending rotary disks D1, D2, and D3 are embedded in the base member, and the upper surface of the base member and the conveying rotary disks D1, D2, and D3 are embedded. The upper surface and the surface of the transfer path 3a are flush with each other. For this reason, the conveyance surface of the workpiece | work A transferred from the transfer path 3a is made the same, and it carries out to the discharge port 6z for carrying out to the following workpiece | work inspection part 21. FIG. Here, it is also possible to arbitrarily change the rotational speed of the conveying rotary disks D1, D2, and D3. The plurality of transfer rotary disks D1, D2, D3 are centered on two straight lines Q2, Q3 in the same direction as the transfer direction Q1 of the workpiece A transferred along the second arc-shaped alignment wall a2. Are positioned so that the respective transport rotary disks D2 having the center on the straight line Q2 and the respective transport rotary disks D1, D3 having the center on the straight line Q3 are in contact with each other. That is, although arranged like a staggered arrangement, the adjacent rotary disks D1, D2, and D3 adjacent to each other are in sliding contact with each other, so that when the work A is conveyed to the carry-out line 6, the interval is reduced or the connected state is set. Even if it becomes, it can prevent a mutual space | interval from adhering. Here, the carry-out line 6 of the present embodiment is linear, but the structure in which the transport rotary disks D1, D2, and D3 are arranged is also arranged at the bent portion even when the carry-out line 6 is bent. Thus, the transport rotary disks D1, D2, D3 are surely and stably transported. Note that the diameter of the conveying rotary disk and the number of disks to be arranged may be determined in consideration of conditions such as the shape of the workpiece A. For example, they can be arranged as shown in FIG. Further, in the case where the workpiece A can be stably conveyed with only the conveying rotary disk, the base member may not be provided, and the bottom of the discharge line may be configured to include only the conveying rotary disk.

  Independent drive motors Md1, Md2, and Md3 are attached to the three transfer rotary disks D1, D2, and D3, respectively (FIG. 9). That is, the three transport rotary disks D1, D2, and D3 in the horizontal posture are coupled to the drive means Md1, Md2, and Md3 with the drive shafts J1, J2, and J3 directed upward. In the present embodiment, the diameter of the transport rotary disk D2 is made smaller than the diameter of the transport rotary disks D1 and D3 so that the gap between the centers of the three transport rotary disks D1, D2 and D3 does not occur as much as possible. Has been. Then, in order to keep the peripheral speeds of the respective transport rotating disks the same, the rotational speed of the transport rotating disk D2 is made faster than the rotational speeds of the transport rotating disks D1 and D3, and each drive means Md1, Md2 and Md3 are adjusted. The workpiece A guided from the transfer path 3a to the discharge line 6 reaches the carry-out port 6z in a state where it is in a rosary shape in the transfer line 6 and is delivered to the inspection rotary disk 22 of the workpiece inspection section 21. The rotation speed of the inspection rotary disk 22 is set so that the speed of the inspection rotary disk 22 on the transfer path 22a is higher than the transfer speed of the workpiece A on the transfer rotary disk D3. As a result, the workpieces A transferred from the carry-out line 6 onto the transfer path 22a of the inspection rotating disk 22 are separated from each other and transferred on the transfer path 22a from the state of being linked in a bead shape.

  As shown in FIGS. 17A and 17B, the transport rotating disks D1, D2, and D3 are more transport rotating disks D1... D6, and the transport rotating disks D1. A configuration may be adopted in which the base member 11 is attached to the bottom side, pulleys p1... P6 are connected to the respective drive shafts, and the endless belt V1 is suspended. A pulley p7 is connected to a drive shaft that is rotationally driven by the drive motor M4, and the endless belt V1 is stretched around the pulley p7. Therefore, when the pulley p7 is rotationally driven by the drive motor M4, the pulleys p1... P6 are rotated via the endless belt V1, thereby rotating the transport rotary disks D1. Further, in the example shown in FIGS. 16A and 16B, the pulley p6 of the most transporting rotary disk D6 has an endless belt V1 that is more than the pulleys p1... P5 of the other transport rotary disks D1. The diameter of the pulley p6 to be hung is formed small, and the rotation disk D6 on the discharge side 6z is configured to have a higher rotation speed than the other rotation disks D1... D5. For this reason, when the workpiece A comes to the position of the disk D6 on the most discharge side, the workpiece A is quickly discharged so as to be separated from the subsequent workpiece A, and the workpiece A is separated without causing clogging of the workpiece A. It is structured to be discharged.

Next, the workpiece inspection unit 21 that inspects and sorts the workpiece A delivered from the workpiece alignment supply unit 1 using an imaging unit will be described.
As described above, the workpiece inspection unit 21 includes the inspection rotating disk 22 that forms the transfer path 22a of the workpiece A in the circumferential direction, receives the workpiece A conveyed from the workpiece alignment supply unit 1, and rotates and conveys the workpiece A. . In the vicinity of the inspection rotating disk 22, when the workpiece A is at a predetermined position on the transfer path 22a, imaging means F1 and F5 are mounted for imaging the workpiece A from above and below. The image picked up by the image pickup means F1 and F5 is subjected to analysis processing, and the quality inspection of the work A is performed. The work A determined as a defective product by the instruction of the image inspection section 23 is placed on the transfer path 22a. The removal means (air nozzle) 24 for removing the workpiece A, the chute 25 for storing the workpiece A removed from the removal means (air nozzle) 24, and the workpiece A determined to be non-defective by the image inspection unit 23 on the transfer path 22a. The removal means (air nozzle) 26 moved from 1 and the chute 27 which stores the workpiece | work A removed from the removal means (air nozzle) 26 (FIG. 10). In FIG. 1, the image pickup means F4 is also arranged, but this is used when used as in the second embodiment.

  The inspection rotating disk 22 is a transparent circular disk made of glass, and rotates and conveys the workpiece A along the transfer path 22a to the periphery thereof. The inspection rotary disk 22 is formed of a flat plate, and is not provided with a peripheral wall (convex portion) along which the workpiece A is placed. In other words, even if the transfer path 22a is rotated and conveyed simply by being placed on the inspection rotating disk 22 made of glass, a line or a peripheral wall is not formed. Further, the tips 8b and 9b of the alignment walls 8 and 9 on the carry-out line 6 side are extended to the track of the transfer path 22a. In addition, by providing the arcuate portion 8c for guiding to the transfer path 22a on the front end 8b side of the alignment wall 8, it becomes possible to perform rotational conveyance in accordance with the rotation in the radial direction (see FIG. 19).

  The inspection rotary disk 22 is disposed at a position where the inspection rotary disk 22 is submerged below the transfer rotary disk D3 in the carry-out line 6. That is, when viewed from above, the outer peripheral end sides of the transport rotary disk D3 and the inspection rotary disk 22 are overlapped (see FIGS. 9, 10, and 11). Here, it is desirable to arrange the inspection rotating disk 22 so that the workpiece A discharged from the discharge port 6z is immediately after that at the position of the transfer path 22a of the inspection rotating disk 22. By arranging in this way, the workpiece A discharged from the carry-out port 6z of the discharge line 6 is transferred onto the track most suitable for rotational transfer of the transfer path 22a of the inspection rotary disk 22. In addition, it is preferable to suppress the said level | step difference Hc by using the thin disk for the rotation disk D3 for conveyance (FIG.11 (b)).

  The inspection rotating disk 22 is made of a highly transparent material such as quartz glass. By forming the inspection rotary disk 22 with a highly transparent material, the imaging means F5 is arranged below the transfer path 22a, and the lower surface of the workpiece A on the transfer path 22a is imaged through the transfer path 22a. is there. The transparent glass disk is easily damaged, but the work A discharged from the carry-out line 6 is immediately conveyed to the transfer path 22a, so that the inspection rotating disk 22 is hardly damaged by friction with the work A. , Trying to maintain its transparency.

  A driving shaft J22 for rotating the inspection rotating disk 22 is attached to the center of the inspection rotating disk 22, and a driving motor M4 for rotating the inspection rotating disk 22 is coupled to the rotating shaft J22. The drive motor M4 is disposed below the inspection rotary disk 22, and the drive shaft J22 is disposed upward (FIG. 9).

  Imaging means F1 and F5 are attached in the vicinity of the inspection rotating disk 22 (FIG. 1). The imaging means F1 is disposed above the transfer path 22a, and images the upper surface of the work A when the work A reaches the first imaging position G1 of the transfer path 22a. The imaging timing of the imaging unit F1 is performed by, for example, providing a detection sensor that detects the passage of the workpiece A before the imaging position G1, and matching the imaging timing of the imaging unit F1 with a signal from the detection sensor. The imaging means F5 images the lower surface of the workpiece A when the workpiece A that has passed through the first imaging position G1 is further rotationally transferred and reaches the second imaging position G2 of the transfer path 22a. Similarly to the above, the imaging timing of the imaging means F5 is provided with a detection sensor that detects the passage of the workpiece A before the second imaging position G2, and the imaging timing of the imaging means F5 is matched with the signal from this detection sensor. Done. Here, the imaging means F1 may be arranged above the second imaging position G2 so that the upper surface and the lower surface of the workpiece A can be photographed at one location. Conversely, the imaging positions are increased and each imaging position is increased. It is good also as a structure which arrange | positions each imaging means. The imaging unit F4 measures one side of the workpiece A (see the second embodiment), and images the same as the imaging unit F5 when passing through the second imaging position G2.

  The image data of the two surfaces picked up by each of the image pickup means F1 and F5 is sent to the image inspection unit 23 that analyzes the image data and checks the quality of the work A. The image inspection unit 23 is disposed in the housing Da of the inspection apparatus I (FIG. 9). The image inspection unit 23 performs a quality check of the appearance of the workpiece A (whether there is a scratch, the type, the size, etc.).

  The workpiece A determined to be defective by the image inspection unit 23 is blown off from the transfer path 22a by the air nozzle 24 arranged on the inspection rotary disk 22. The air nozzle 24 is installed on the inspection rotary disk 22 so that the air ejection port 24a faces the workpiece removal position G3 on the transfer path 22a. The air nozzle 24 receives a signal from the image inspection unit 23, injects air from the air outlet 24a, and blows off only the workpiece A determined to be defective from the transfer path 22a. The timing at which the air nozzle 24 ejects air from the air ejection port 24a is determined by the timing at which a signal is sent from the image inspection unit 23. This timing is determined by the image inspection unit 23 from the imaging means F1, F5. The calculation is performed taking into account the transport speed of the work A on the transfer path 22a with reference to the time when the data is received. The workpiece A blown off by the air nozzle 24 at the removal position G3 is stored in a first chute 25 disposed in the vicinity of the inspection rotary disk 22 in accordance with the air ejection direction of the air nozzle 24.

  The work A determined to be non-defective by the image inspection unit 23 is blown off from the transfer path 22 a by the air nozzle 26 disposed on the inspection rotating disk 22 and stored in the second chute 27. For example, a detection sensor for detecting the passage of the workpiece A is provided in front of the selection position G4, and the air ejection timing of the air nozzle 26 is matched with the signal from the detection sensor S3. Good. This air nozzle 26 injects air from the air outlet 26a, and blows off only the workpiece | work A determined to be non-defective from the transfer path 22a. The workpiece A blown off by the air nozzle 26 at the selected position G4 is stored in a second chute 27 disposed in the vicinity of the inspection rotary disk 22 in accordance with the air ejection direction of the air nozzle 26.

  Next, when the appearance inspection of the workpiece A is actually performed using the workpiece inspection apparatus I according to the present embodiment, first and second arc shapes are matched to the size or alignment direction of the workpiece A. The width H3 of the transfer path 3a of the alignment walls a1 and a2 is determined. For example, in FIG. 7A, the size of the workpiece A is vertical a, horizontal b, and depth c (a> b> c), and each surface of the workpiece A is defined as J plane (a × b), N plane ( b × c) and Q-plane (c × a). Here, when it is desired to transfer the workpiece A so that the N surface of the workpiece A is perpendicular to the traveling direction and the J surface is in contact with the transfer path 3a (see FIG. 7A), the above The width H3 of the transfer path 3a needs to be b. Therefore, the first and second arcuate alignment walls a1 and a2 are slid in the Y direction by the first slide member S1, or only the second arcuate alignment wall a2 is slid in the X direction. The width intervals H3 and H4 of the transfer path 3a are determined. Here, when the first and second slide members S1 are slid, as shown in FIG. 3B, near the boundary between the first alignment wall 7 and the second alignment wall 8 (near the center G). ), The width H3 of the transfer path 3a is the narrowest, so the width H3 in the vicinity of this boundary is set to b. On the other hand, when only the second arcuate alignment wall 8 is slid, the width H4 of the transfer path 3a is the smallest near the middle of the arc surface 8a of the second arcuate alignment wall 8, so this width b Set to be.

  When the alignment walls 7 and 8 are used, the width interval H (H1... H3 · H4) and the arc shape of the transfer path 3a on the transfer path 3a are precisely changed according to the size of the workpiece A to be transferred. For example, it is possible to easily and accurately adjust the width interval H of the transfer path 3a so that tablets and capsules larger than the electronic element C are aligned and conveyed (FIG. 3).

  After setting in this way, the drive motor M1... Is driven, and the workpiece A is loaded into the bottom 2a of the loading rotary disk 2. Here, since the alignment rotary disk 3 and the input rotary disk 2 are driven separately, the alignment rotary disk 3 is set to a high speed rotation, but the input rotary disk 2 can be set to a low speed rotation. As this low speed rotation, in order not to cause damage due to the rotation of the workpiece A, a low speed rotation is preferable so that the workpiece A rotates in a stationary state on the bottom 2a of the loading rotary disk 2. The alignment rotating disk 3 is rotated at a high speed, but can be set to 20 times or more as compared with the low-speed rotation of the loading rotating disk 2. Each workpiece A put into the bottom 2a of the loading rotary disk 2 rotates (rotates in a stationary state) by the rotation of the loading rotary disk 2 and is dammed up by the transfer rotary disk 5 that is in sliding contact with the bottom 2a. . Then, each workpiece A captured by the transfer rotating disk 5 is rotated on the inner peripheral surface 2c of the loading rotary disk 2 along the shape of the inner peripheral surface 2c from the bottom 2a by the rotation of the transfer rotating disk 5. It is transferred to the intersection T between the outer upper end P1 and the transfer path 3a of the aligning rotary disk 3 and transferred to the transfer path 3a of the aligning rotary disk 3. Here, among the workpieces A blocked by the transfer rotating disk 5, those that could not be transferred to the transfer path 3 a are again inserted into the rotation through the through hole 5 a provided near the center of the transfer rotating disk 5. The disk 2 is returned to the bottom 2a.

  Each workpiece A transferred to the transfer path 3a of the rotating disk 3 for alignment is transferred on the transfer path 3a which becomes gradually narrower by the transfer path 3a and the first and second arcuate alignment walls 7 and 8. (H1> H2> H3 · H4). Here, the workpiece A delivered to the transfer path 3a may be in a multi-stacked state (see reference A1) or in some cases where the longitudinal direction of the work A protrudes to the transfer path 3a (see reference A2). Then, the workpiece A to be passed is selected by air jetting by the alignment plate 16 or the air nozzle 17 or the like.

  The workpiece A transferred on the transfer path 3a is guided to the carry-out line 6 continuously installed in the transfer path 3a while being in contact with the inside of the second arc-shaped alignment wall a2. It is transferred to the carry-out line 6 by the rotation of the transfer rotary disks D1, D2, D3 which are flush with 3a. In other words, the workpiece A that has reached the linear alignment wall 8y is transferred to the workpiece inspection unit 21 side by the rotation of the first transfer rotary disks D1, D2, and D3, and the first transfer rotary disks D1, D2, and D3 It is sequentially delivered to the next rotating rotary disks D1, D2, D3 that come into contact. Here, since the carry-out line 6 transfers the workpiece A by the rotation of the respective transport rotary disks D1, D2, and D3, the transport speed can be adjusted, and since the transport line 6 is a flush rotary disk, it is conventional. Compared with the vibration-type unloading line, the workpiece A can be unloaded smoothly, and the workpiece A such as an electronic element can be unloaded reliably without being damaged. In the present embodiment, a suction device that assists in guiding the workpiece A in this direction at the time of guiding to the carry-out line 6 is disposed. The workpiece A guided to the carry-out line 6 is transferred by the transfer rotary disks D1, D2 and D3 in a bead-like state, and is received from the carry-out port 6z to the inspection rotary disk 22 of the workpiece inspection unit 21. Passed.

  The workpiece A discharged from the carry-out port 6z is transferred onto the transfer path 22a of the inspection rotary disk 22 (FIGS. 10 and 11). Here, the rotational speed of the inspection rotary disk 22 (the peripheral speed on the transfer path 22a of the inspection rotary disk 22) compared to the rotational speed of the transport rotary disk D3 (the peripheral speed at the portion where the workpiece A is placed). ) Is set faster. For this reason, the workpieces A that have been arranged in a bead shape in the discharge line 6 are separated from the subsequent workpieces A immediately after being transferred to the inspection rotary disk 22, and the workpieces A on the transfer path 22 a are equally spaced. It is transported in a state of being aligned. Further, the connected workpiece A is also separated by the step Hc between the conveying rotary disk D3 and the inspection rotary disk 22. In addition, the code | symbol Hc in FIG.11 (b) shows the outer peripheral end of the rotation disk D3 for conveyance. Here, the inspection rotating disk 22 is arranged close to the lower part of the conveying rotating disk D3 so that the workpiece A discharged from the discharge port 6z is immediately after that at the position of the transfer path 22a of the inspection rotating disk 22. As a result, the workpiece A is placed on the trajectory most suitable for rotational transfer immediately after the workpiece A is transferred to the inspection rotary disk 22.

  Two surfaces of the workpiece A transferred on the transfer path 22a are imaged by the imaging means F1 and F5 at the first and second imaging positions G1 and G2 (FIG. 1). The image inspection unit 23 that has received the image data from each of the imaging means F1 and F5 performs a quality check such as whether the product is a non-defective product or a defective product. Here, the work A determined to be defective is blown off from the transfer path 22a by the air nozzle 24 at a position G3 on the transfer path 22a and stored in the first chute (box) 25. About the work A determined to be non-defective, after passing through the removal position G3 on the transfer path 22a, it is blown off from the transfer path 22a by the air nozzle 26 at the selected position G4 on the transfer path 22a. It is stored in a chute (box) 27.

  By the way, according to the present embodiment, while the loaded workpiece A is rotated by the loading rotary disk 2 (while rotating at a low speed in a stationary state), the workpiece A contacts the alignment rotary disk 3. Never do. That is, the alignment rotating disk 3 rotating at high speed is not affected by damage due to contact friction. Therefore, even when it is necessary to rotate the alignment rotating disk 3 at a high speed in order to align the workpieces A at a high speed, the rotation by the input rotating disk 2 can be slowed, and the structure does not depend on the centrifugal force. As a result, the rate of damaging the workpiece A can be reduced (there is no damage due to the rotation of the throwing rotating disk 2 or damage due to contact friction with the aligning rotating disk 3). Then, the work A pulled up to the transfer path 3a of the rotating disk 3 for alignment is transferred by high speed rotation, and the work A is unloaded by the transfer rotating disks D1, D2, D3 of the unloading line 6 earlier than that. Is possible. Here, since the driving of the transport rotary disks D1, D2, and D3 is independent of each other, the transport rotary disk D3 on the most discharge side is set to be more than the other transport rotary disks D1 and D2 when necessary. By increasing the rotational speed, it is possible to carry out alignment and transport at a higher transport speed than in the conventional apparatus.

(Second Embodiment)
FIG. 12 is a plan view showing a workpiece appearance inspection apparatus according to the second embodiment. The inspection apparatus I2 according to the present embodiment arranges the second inspection rotating disk 22 made of transparent glass next to the first inspection rotating disk 32 made of stainless steel, and performs the first inspection from the conveying line 6. The structure is transferred to the rotating disk 32 for inspection and transferred to the rotating disk 22 for inspection made of transparent glass. In the present embodiment, one side surface (Q surface) of the workpiece A is imaged by the imaging means F4 in the vicinity of the first inspection rotating disk (inspection rotating disk having the suction holes 32c) 32, and before and after the workpiece A. (N surface and the opposite surface) are imaged by imaging means F2 and F3, and the other three surfaces are imaging means F1 arranged at a predetermined location Gh of the transfer path 22a of the second inspection rotating disk 22. , F5 images the upper and lower surfaces of the workpiece A, and the imaging means F6 images the other side surface (the surface opposite to the Q surface) of the workpiece A. The second inspection rotary disk 22 has the same configuration as the transparent glass inspection rotary disk of the first embodiment, and is further provided with discharge mechanisms 33a to 33c and 34.

  A number of suction holes 32c for sucking and fixing the workpiece A on the transfer path 32a are formed in the transfer path 32a of the first inspection rotary disk 32. A plurality of suction holes 32 c are arranged at equal intervals on the radiation extending from the center of the first inspection rotary disk 32. The suction hole 32c sucks the workpiece A from the lower surface side by suction means through a suction ring (not shown) provided below the inspection rotary disk 32. That is, the suction ring is formed with a suction slit having a predetermined length, and suction means such as a suction pump is disposed in the housing (apparatus body) Da. Accordingly, the workpiece A is rotated and transferred while being fixed on the transfer path without being blown from the transfer path 32a to the outside by the centrifugal force even while the second inspection rotating disk 32 is rotating at a high speed. Is done. Further, the shape and number of the suction holes 32c, the arrangement thereof, and the like are arbitrary. Then, the work A, which is determined to be defective by the image inspection unit 23 of the housing (apparatus body) Da, is a chute 34 from above the transfer path 22a by the air nozzles 33a to 33c disposed on the inspection rotating disk 22. Blown off.

  Delivery from the first inspection rotating disk 32 to the second inspection rotating disk 22 is performed via the guide GT (FIG. 14A). The guide GT is composed of left and right side walls T1 and T2 having a predetermined width, and is suspended over the transfer path 32a and the transfer path 22a while being suspended from above by a suspension member (not shown). The guide GT connects the track on the transfer path 32a most suitable for the rotational transfer of the work A and the track on the transfer path 32a most suitable for the rotary transfer of the work A, and the work on the transfer path 32a. A is introduced into the guide GT (between the left and right side walls T1 and T2) and guided onto the transfer path 22a. The workpiece A guided to the transfer path 22a is rotated and transferred by the second inspection rotating disk 22 made of glass.

  In the present embodiment, as shown in FIG. 12, the first inspection rotating disk 32 is smaller than the diameter of the second inspection rotating disk 22. This is because the area of the upper surface of the casing Da is limited, so that it must be provided in a limited range (request for downsizing of the apparatus), and the front and rear surfaces of the workpiece A (the N surface and vice versa) When the image of the side surface) is taken, it is highly likely that the next work A, which is continuously conveyed, will be a shadow of the work A to be imaged on the rotating disk 22 having a large diameter. That is, as shown in FIG. 18, in the large-diameter rotating disk 22, there is a high possibility that the imaging by the imaging means F3 is hindered by the workpiece Ab conveyed next to the workpiece A to be imaged (work A and workpiece Ab). Are the same distance), the rotary disk 32 having a small diameter has a large angle difference between the workpieces A being conveyed. The opposite surface) can be imaged.

(Third embodiment)
FIG. 13 is a plan view showing a workpiece appearance inspection apparatus according to the third embodiment. In the inspection apparatus I3 of the present embodiment, the first inspection rotating disk 22 made of transparent glass is disposed at the next position of the transport line 6, and further the workpiece A is removed from the first inspection rotating disk 22. A second inspection rotating disk 35 made of stainless steel is provided. In the present embodiment, on the first inspection rotating disk 22, the upper surface (J surface), the lower surface (K surface) and one side surface (Q surface) of the workpiece A are imaged by the imaging means F1, F4, F5. The other three surfaces are imaged by imaging means F2, F3, and F6 arranged at a predetermined location Gh of the transfer path 35a of the second inspection rotating disk 35. The delivery of the workpiece A from the first inspection rotary disk 22 to the second inspection rotary disk 35 may be configured to use the guide GT (see FIG. 14A). For the same reason as in the second embodiment, the first inspection rotating disk 22 is smaller than the diameter of the second inspection rotating disk 35.

  A number of suction holes 35c for sucking and fixing the workpiece A are arranged in the transfer path 35a of the second inspection rotary disk 35. A plurality of suction holes 35 c are arranged at equal intervals on the radiation extending from the center of the second inspection rotary disk 35. The suction hole 35c sucks the workpiece A from the lower surface side by suction means through a suction ring (not shown) provided below the inspection rotary disk 35. That is, the suction ring is formed with a suction slit having a predetermined length, and suction means such as a suction pump is disposed in the housing (apparatus body) Da. Therefore, the workpiece A is rotated and transferred while being fixed on the transfer path without being blown from the transfer path 35a to the outside by the centrifugal force while the second inspection rotating disk 35 is rotating at a high speed. Is done. Then, the work A, which is determined to be defective by the image inspection unit 23 of the housing (apparatus main body) Da, is removed from the transfer path 35a by the air nozzles 36a, 36b, 36c disposed on the inspection rotating disk 35. It is blown off by the chute 37.

(Fourth embodiment)
FIG. 15 is a plan view of a workpiece appearance inspection apparatus according to the fourth embodiment of the present invention. FIG. 16 is a diagram illustrating a state of workpiece transfer from the discharge line 6 to the first inspection rotating disk 42 of the workpiece inspection unit 41. The workpiece inspection unit 41 includes a first inspection rotating disk 42 and a second inspection rotating disk 52 that receives the workpiece A from the rotating disk 42. The first and second inspection rotating disks 42 and 52 are both made of stainless steel, and suction holes 42c and 52c are formed in both. In the present embodiment, the appearance inspection of the workpiece A is performed by ultra high-speed rotation by suction through the suction holes 42c and 52c. In the present embodiment, five surfaces other than the imaging from the lower surface of the workpiece A are imaged by the imaging means.

  The first inspection rotating disk 42 forms a transfer path 42a for the workpiece A in the circumferential direction, receives the workpiece A conveyed from the discharge line 6, rotates and conveys it, and transfers the workpiece A in the circumferential direction 52a. The workpiece A is delivered to the second inspection rotating disk 52 formed with the above. Further, the image picked up by the image pickup means (not shown) is subjected to analysis processing, and the image inspection unit 23 for checking the quality of the work A, and the work A determined as a defective product by a command from the image inspection unit 23. Air nozzles 44 and 45 removed from the transfer path 52a, and first and second chutes 46 and 47 for storing the work A removed from the air nozzles 44 and 45 are provided. Furthermore, the work A determined to be non-defective is dropped by the air nozzle 48, and a third chute 49 is provided for collecting the work A.

  The first and second inspection rotating disks 42 and 52 which are the work inspection unit 41 are stainless steel circular disks, and suction holes 42c and 52c are formed in the transfer paths 42a and 52a, which will be described below. It is rotated and transferred in a state where it is sucked and fixed on the transfer paths 42a and 52a by the suction means. The suction ring does not need to be provided in the entire area of the inspection rotary disks 42 and 52. For example, at the position of delivery from the first inspection rotary disk 42, the movement (delivery) of the workpiece A is not hindered. Thus, it is preferable not to provide it in that portion of the disk 42. On the other hand, the receiving side is preferably provided at that portion of the inspection rotary disk 52 in order to stop the movement immediately after the workpiece A is transferred.

  The upper surface of the first inspection rotating disk 42 is arranged in the vicinity of the conveying rotating disk D3 so as to be flush with the upper surface of the conveying rotating disk D3 of the carry-out line 6 (FIG. 16A). b)). By arranging the first inspection rotating disk 42 so that the upper surfaces of both disks are flush with each other, the transfer of the workpiece A from the conveying rotating disk D3 to the first inspection rotating disk 42 can be performed without any step. It has a structure that can be done. Here, when the workpiece A is delivered from the discharge line 6 to the first inspection rotary disk 42, the workpiece A is received on a track most suitable for rotational transfer of the transfer path 42a of the first inspection rotary disk 42. It is desirable to pass. For this reason, the front end 8b of the alignment wall (guide) 8 constituting the discharge line 6 is arranged on the first inspection rotary disk 42 so that the workpiece A can be guided to a track suitable for the rotational transfer of the transfer path 42a. Has been extended. The extended alignment wall (guide) 8 allows the workpiece A to travel straight on the transfer path 42a without flowing in the rotation direction of the first inspection rotary disk 42, and is most suitable for rotational conveyance on the transfer path 42a. The workpiece A is transported on the track. Here, an arcuate portion 8c corresponding to the diameter of the inspection rotating disk 22 is formed on the alignment wall 8 at the front end 8b side so as to be transferred onto the transfer path 22a of the inspection rotating disk 22. (FIG. 19).

  An infinite number of suction holes 42c for sucking and fixing the work A on the transfer path 42a are arranged in the transfer path 42a of the first inspection rotating disk 42. A plurality of these suction holes 42c are arranged at equal intervals on innumerable radiation extending from the center of the first inspection rotary disk 42. The suction hole 42c is connected to suction means provided below the first inspection rotary disk 42, sucks the lower surface of the work A by suction from the suction means, and fixes the work A at that position. As a result, the workpiece A is fixed on the transfer path 42a without being blown from the transfer path 42a to the outside by the centrifugal force even while the first inspection rotating disk 42 is rotating at a high speed. It is rotated and transferred as it is.

  The second inspection rotating disk 52 is disposed close to the transfer path 52a so as to be flush with the transfer path 42a of the first inspection rotating disk 42. Since the configuration of the second transfer path rotary disk 52 is the same as that of the first inspection rotary disk 42, the description thereof is omitted.

  The transfer from the first inspection rotary disk 42 to the second inspection rotary disk 52 is performed by the guide GT as described above (see FIG. 14A). The guide GT is composed of left and right side walls T1 and T2 having a predetermined width and side walls T1 and T2, and is suspended from above by a suspension member (not shown), on the transfer path 42a and the transfer path 52a. It is passed over to. The guide GT connects a track on the transfer path 42a most suitable for the rotational transfer of the work A and a track on the transfer path 52a most suitable for the rotary transfer of the work A, and the work on the transfer path 42a. A is introduced into the guide GT and guided onto the transfer path 52a. The work A guided up to the transfer path 52a reaches the most suitable path for the rotational transfer of the work A on the transfer path 52a, and is sucked and fixed at this position by the suction hole 52c. Is rotated and transferred. The guide GT may be a plate-shaped one that delivers only along one side (one side) of the workpiece.

  Here, in the above description, the first and second inspection rotating disks 42 and 52 are disposed so as to be flush with each other, but the second inspection rotating disk 42 is arranged with respect to the first inspection rotating disk 42. The second inspection rotary disk 52 may be arranged so that the 52 is submerged (FIG. 14B). In the case of such a configuration, the guide GT having the left and right side walls T1, T2 is arranged only on the first inspection rotating disk 42 on the first inspection rotating disk 42, and the workpiece A is placed on the transfer path 42a. To the transfer path 52a. The workpiece A that has entered the guide GT from the trajectory most suitable for the rotation of the workpiece A on the transfer path 52a passes through the guide GT and is transferred from the transfer path 42a to the transfer path 52a, and is sucked by the suction hole 52c. Fixed and rotated.

It is a perspective view which shows the external appearance inspection apparatus of the workpiece | work which is the 1st Embodiment of this invention. It is sectional drawing which shows the internal structure of the workpiece | work alignment supply part of the said 1st Embodiment. It is a top view which shows the slide structure of the workpiece | work alignment supply part of the said 1st Embodiment, Fig.3 (a) is a top view which slid the 1st and 2nd circular arc-shaped alignment wall in the Y direction. FIG. 3B is a plan view of the second arcuate alignment wall slid in the X direction. It is a top view which shows the structure of the carrying-out line of the workpiece | work alignment supply part of the said 1st Embodiment. It is a figure which shows the location where the alignment plate of the workpiece | work alignment supply part of the said 1st Embodiment is arrange | positioned, Fig.5 (a) is the top view, FIG.5 (b) is the sectional drawing. It is a figure which shows the location where the air nozzle of the workpiece | work alignment supply part of the said 1st Embodiment is distribute | arranged, Fig.6 (a) is the top view, FIG.6 (b) is the sectional drawing. It is a perspective view which shows the example of the workpiece | work conveyed by the said embodiment. It is a perspective view which shows the other example of the workpiece | work conveyed by the said embodiment. It is sectional drawing which shows the internal structure of the said embodiment. It is a top view which shows the structure around the discharge line of the said embodiment, and the rotation disk for a test | inspection. FIG. 11A is an enlarged plan view showing a state of workpiece transfer from the discharge line to the inspection rotating disk according to the above-described embodiment, and FIG. 11B shows the state from the discharge line to the inspection rotating disk. It is sectional drawing which shows the mode of the delivery of a workpiece | work. It is a top view of the external appearance inspection apparatus of the workpiece | work of the 2nd Embodiment of this invention. It is a top view which shows the external appearance inspection apparatus of the workpiece | work of the 3rd Embodiment of this invention. It is a perspective view which shows the mode of delivery to the 2nd test | inspection rotary disk from the 1st test | inspection rotary disk of the said embodiment, Fig.14 (a) is a 1st and 2nd test | inspection rotary disk. FIG. 14B is a perspective view showing a workpiece transfer state in the case where the first and second inspection rotating disks are arranged close to each other. FIG. It is a top view which shows the external appearance inspection apparatus of the workpiece | work of the 4th Embodiment of this invention. It is a top view which shows the mode of the delivery from the 1st test | inspection rotary disk of the said 4th Embodiment to the 2nd test | inspection rotary disk. It is a figure which shows the other example of the conveyance line of the 1st Embodiment of this invention, Fig.17 (a) is the top view, FIG.17 (b) is the sectional drawing. In 2nd Embodiment, it is a figure explaining the state used as the shadow of a workpiece | work by the imaging by an imaging means. In 4th Embodiment, it is a figure explaining the state which a workpiece | work moves along the circular arc-shaped part formed in the front end side of the alignment wall.

Explanation of symbols

1 Work alignment supply unit,
2 Rotating disc for loading 2a Bottom portion, 2c Concave inner peripheral surface,
3 rotating disk for alignment, 3a transfer path, 3c concave peripheral wall,
5 Rotating disc for delivery,
6 Unloading line,
7 first alignment wall,
a1 first arcuate alignment wall, a2 second arcuate alignment wall,
8 second alignment wall, 8b tip of alignment wall,
9 linear alignment wall, 9b tip of alignment wall,
16 sorting plate,
17 Air nozzle,
21, 41 Work inspection part,
22 Inspection rotating disk (first or second inspection rotating disk),
22a, 32a, 42a, 52a transfer path,
22c, 32c, 42c suction holes,
32, 42 First inspection rotating disk,
GT guide,
35 second inspection rotating disk, 35a transfer path,
62 second rotating disk for inspection, 62a transfer path,
A, A1, A2 workpiece, A1 stacked workpiece, A2 protruding workpiece,
S1 first slide member, Sy keyway, Sn1 adjusting screw,
S2 second slide member, Sx keyway, Sn2 adjustment screw,
D1... D6 Transport rotary disk, D3 and D6 The most discharge side transport rotary disk,
H, H1... H4 width interval of transfer path, H3, H4 width interval of narrowest transfer path,
Hc steps I, I2, I3 Workpiece visual inspection device,
P1 The upper end of the concave inner peripheral surface of the rotating disk for loading,
P2 The upper end of the concave peripheral wall of the rotating disk for alignment,
p1 ... p3 pulley,
V1, V2 endless belt,
T intersection

Claims (7)

A workpiece alignment supply unit that aligns the loaded workpieces, a workpiece inspection unit that images the workpieces supplied from the alignment supply unit by an imaging unit, and a workpiece that is arranged between the workpiece alignment supply unit and the workpiece inspection unit In the work visual inspection device equipped with a transport line that transports the work to the work inspection unit,
A rotating rotating disk for conveying a work on its upper surface is horizontally arranged on the conveying line, and an inspection rotating disk for conveying a work on its upper surface is horizontally arranged on the work inspection section, and these rotations are performed. An apparatus for inspecting the appearance of a workpiece, wherein the disk is connected to each drive means whose drive shaft is directed upward.   The workpiece alignment supply unit for aligning the charged workpieces is composed of a rotating rotary disk for rotating the charged workpieces and an alignment rotary disk that rotates by forming a workpiece transfer path in the circumferential direction. 2. The work visual inspection apparatus according to claim 1, wherein said rotary disk is also arranged horizontally and is connected to each drive means whose drive shaft is directed upward.   2. The inspection rotating disk is made of transparent glass, and image pickup means for picking up an image of a work conveyed on the upper surface from the lower surface is arranged at a predetermined position of the inspection rotating disk. Equipment inspection equipment.   2. The work is sucked by a suction means through a suction ring in which a suction hole is formed on an upper surface of the inspection rotating disk and a suction slit having a predetermined length is formed on a lower side thereof. The work visual inspection apparatus according to 1.   The upper surface of the inspection rotating disk is arranged below the upper surface of the conveying rotating disk, and the outer peripheral end side of the inspection rotating disk and the outer peripheral end side of the conveying rotating disk are arranged so as to partially overlap. The work visual inspection apparatus according to claim 1, wherein the work visual inspection apparatus is provided.   The upper surface of the inspection rotating disk is disposed close to the upper surface of the conveying rotating disk, and a guide for guiding a work from the conveying rotating disk to the inspection rotating disk is disposed. The work visual inspection apparatus according to claim 1, wherein the work visual inspection apparatus is provided. The work visual inspection apparatus according to claim 1, wherein an air passage for supplying compressed air from an air blowing unit is formed in the inspection rotating disk.

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