JP2017047382A - Component inspection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a component inspection device which can inspect a small number of and various kinds of rod-like work-pieces w with good efficiency.SOLUTION: A component inspection device 1 in which a slider 12, which is reciprocally movable, is located on a fitting reference surface 10 inclined at a prescribed angle, and which comprises a set of plate-like members 17, 18 which are provided in parallel to the slider 12. The device comprises: a holding member 4 which supports a guard direct position 102 of a rod-like work-piece w and a position 101 separated therefrom, and holds the rod-like work-piece w in an inclined state so that an axis of the rod-like work-piece w is directed in a direction along the fitting reference surface 10; an inspection unit 5 which is provided on a midway of a movement path of the slider; a supply unit 6 which is provided on an initial point position side with respect to the inspection unit 5, and supplies the work-piece to the holding member; and a selection unit 7 which is provided on an end point position side with respect to the inspection unit 5, selects the rod-like work-pieces w, which are inspected by the inspection unit, into a good group and a bad group and removes the work-pieces from the holding member 4.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a component inspection apparatus for imaging and inspecting a rod-shaped workpiece, and more particularly to a component inspection apparatus for performing image inspection of a workpiece and selecting its quality.

  Conventionally, as a part inspection apparatus for rod-shaped workpieces such as screws and rivets formed by cold forging or the like, for example, Patent Document 1 (Japanese Patent Laid-Open No. 2008-73653) has been known. This inspection device is provided with an inclined surface on which a part is placed and a conical trapezoidal carrier that can be driven to rotate, and a part placed on the carrier at a specific position of the carrier, and is in an upright state The holding part is capable of being conveyed, and the screw in the standing state is imaged from the side surface in the conveying path so that the axial end surface and the side surface can be inspected continuously.

  This device can feed and supply screws continuously by rotational movement, and can perform image inspection while moving in an inspection section that moves in an arc shape in one direction, so it can be efficiently performed in a short time. It has the advantage that the workpiece can be inspected.

JP 2008-73653 A

  However, since the component inspection apparatus of Patent Document 1 performs an inspection in an upright state with the screw head on the lower side, only a so-called headed screw can be inspected. In addition, it is necessary to pass the screw from the transport body to the inspection unit with an unstable posture with the head facing down, and it is necessary to transport the inspection unit, so depending on the type of screw, the range of compatible transport body and inspection unit is small, Depending on the type and size of the screw, it was necessary to frequently replace the carrier and the holding part with a suitable one.

  Therefore, the component inspection apparatus of Patent Document 1 is suitable for inspecting a small number of types and a large number of screws, but inspection of a workpiece of a large variety of small lots requires a large amount of labor for component replacement and efficiently inspects. That was cumbersome.

  In general, screw production is roughly divided into various processes such as heading, cutting, drilling, and threading, and each subcontractor is often in charge of each process. For this reason, when there is a defect in the upstream process, the downstream intermediate product and the finished product are generally defective.

  Against this background, it is not possible to determine which process has failed by performing only one inspection in the final process for creating a finished product, and the work in the downstream process is wasted. There is a request to conduct an inspection. However, as described above, it is necessary to perform a small number of types of inspections in each process, and the inspection apparatus disclosed in Patent Document 1 has a problem in that it requires a lot of labor for inspection.

  Therefore, the technical problem to be solved by the present invention is to provide a component inspection apparatus having a simple configuration capable of efficiently inspecting a small number of types of bar-shaped workpieces.

  In order to solve the above technical problem, the present invention provides a component inspection apparatus having the following configuration.

According to the first aspect of the present invention, there is a parts inspection device used for inspection of a rod-shaped workpiece,
A body frame having a mounting reference surface;
A slider that is disposed along the reference mounting surface of the main body frame and is capable of reciprocating between a start position and an end position;
A pair of plate-like members that are arranged in parallel in the vertical direction and that support locations separated in the axial direction of the rod-shaped workpiece are provided, and the axis of the rod-shaped workpiece is inclined at a predetermined angle with respect to the vertical direction. A holding member for holding a rod-shaped workpiece;
An inspection unit that is provided in the moving path of the slider and inspects the quality of the bar-shaped workpiece held by the holding member;
A supply unit that is provided on the start position side with respect to the inspection unit in the movement path of the slider, and that supplies the rod-shaped workpiece to the holding member;
A sorting unit that is provided on the end position side with respect to the inspection unit in the movement path of the slider, and that sorts the bar-shaped workpiece inspected by the inspection unit according to quality and removes it from the holding member. A component inspection apparatus is provided.

According to the second aspect of the present invention, the main body frame is configured such that the attachment reference plane is provided with an inclination angle at a predetermined angle with respect to the vertical direction,
The holding member holds the rod-shaped workpiece so that the axis of the rod-shaped workpiece is in a direction along the attachment reference plane. The component inspection apparatus according to the first aspect is provided.

  According to a third aspect of the present invention, the slider moves in the vertical direction starting from the lower end along the attachment reference plane of the main body frame and starting from the start position. I will provide a.

  According to the fourth aspect of the present invention, the holding member is provided in the slider so as to be movable in a direction intersecting the moving path of the slider, and the supply unit and the sorting unit are held by the slider. A component inspection apparatus according to a third aspect is provided, wherein the component inspection apparatus is provided at a movement position of a member, and the rod-shaped workpiece is attached to and detached from the holding member by the movement of the holding member.

  According to the fifth aspect of the present invention, the sorting unit is configured to sort out and remove defective products at the lower position and non-defective products at the upper position according to the moving position of the slider. A component inspection apparatus according to a fourth aspect is provided.

  According to the present invention, the slider that moves along the mounting reference plane inclined in the vertical direction is supported by the plurality of locations separated in the axial direction of the bar-shaped work, thereby supporting the bar-shaped work in the direction along the mounting reference plane. By doing so, the supply, movement, imaging, and detachment of the bar-shaped workpiece are each easy and stable. For this reason, the apparatus can have a simple configuration, and the holding member that supports the rod-shaped workpiece can be used widely and widely according to the shape of the rod-shaped workpiece. Can be inspected.

FIG. 1 is a perspective view schematically showing the configuration of the component inspection apparatus according to the first embodiment of the present invention. FIG. 2 is a diagram showing a bar-shaped workpiece that is an inspection target of the component inspection apparatus in FIG. 1. FIG. 3 is a block diagram showing an operation control mechanism of the component inspection apparatus according to the present embodiment. It is a perspective view which shows typically the structure of the workpiece holding unit of the component inspection apparatus of FIG. It is a side view of FIG. 4 in the state holding the rod-shaped workpiece. It is a perspective view which shows typically the structure of the supply unit of the component inspection apparatus of FIG. It is a perspective view which shows typically the structure of the selection unit of the components inspection apparatus of FIG. It is a top view of the selection unit of FIG. FIG. 9 is an explanatory diagram of an operation procedure of the component inspection apparatus according to the present embodiment. FIG. 10 is a perspective view schematically showing the configuration of the component inspection apparatus according to the second embodiment of the present invention. FIG. 11 is a schematic diagram showing a modification of the workpiece holding member of the component inspection apparatus according to the embodiment of the present invention.

  Hereinafter, a component inspection apparatus according to each embodiment of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a perspective view schematically showing the configuration of the component inspection apparatus according to the first embodiment of the present invention. The component inspection apparatus 1 according to the present embodiment is used for inspection of rod-shaped workpieces such as screws and rivets formed by cold forging, etc., for imaging a small amount of many types of workpieces from the side and performing image inspection. It is a device.

  The component inspection apparatus 1 includes a main body frame 2, a slider unit 3, a work holding unit 4, an inspection unit 5, a supply unit 6, and a sorting unit 7. As will be described later with reference to FIG. 3, the parts inspection apparatus 1 controls the operation of the slider unit 3, the work holding unit 4, and the inspection unit 5 provided in the main body frame, and determines whether or not the bar-shaped work is supplied or not. Prior to the description of the configuration of the component inspection apparatus according to the present embodiment, the bar-shaped workpiece that is the inspection target of the component inspection apparatus will be described.

  In addition to the general headed screw shown in FIG. 2 (a), the rod-shaped workpiece to be inspected by the component inspection apparatus according to the present embodiment has a special shape as shown in FIGS. 2 (b) to 2 (e). Used for inspection of workpieces. In the component inspection apparatus according to the present embodiment, the configuration of the workpiece holding unit 4 to be described later is appropriately designed according to the shape of the rod-shaped workpiece, particularly the presence or absence of flanges and the inspection location of the workpiece.

  Each of the rod-like workpieces shown in FIGS. 2 (a) to 2 (c) has a configuration in which a flange is provided that protrudes in a direction orthogonal to the workpiece axis. In the general screw shown in FIG. 2A, the boundary portion between the screw head 100 and the screw portion 101 corresponds to the flange 102. 2B, the connecting portion provided between the two screw portions 101a and 101b corresponds to the flange 102. In the multistage female screw shown in FIG. 2C, a boundary portion between two screw portions 101a and 101b having different diameters corresponds to the flange 102. Further, as shown in FIG. 2 (d), there is not much difference in the diameter of the boundary between the head portion 100 and the screw portion 102, and there is a work having no remarkable brim 102 or a special shape as shown in FIG. 2 (e). It is also possible to inspect a work having a head having a head. Hereinafter, in this embodiment, an example of inspecting the workpiece shown in FIG.

  The main body frame is a main body portion for attaching each component of the component inspection apparatus 1, and is provided with an attachment reference plane 10. The attachment reference plane 10 is formed in a rectangular shape that is long in the vertical direction, and has an inclination angle θ with respect to the vertical direction. The inclination angle θ is 30 degrees in this embodiment, but can be in the range of about 10 degrees to 60 degrees. The constituent members are fixed to the surface of the attachment reference plane 10.

  In the present embodiment, the direction is specified with reference to the attachment reference plane, and is defined as follows. In the present embodiment, the attachment reference plane 10 constitutes an XY plane. In FIG. 1, the X axis is the vertical direction of the attachment reference plane, the Y axis is the horizontal direction of the attachment reference plane, and the Z axis is the direction perpendicular to the attachment reference plane.

  By providing the inclination angle θ with respect to the vertical direction of the attachment reference plane, it is possible to efficiently attach and detach the bar-shaped work to the work holding unit 4 by the work holding part 4 described later. That is, as described later, the above-described bar-shaped workpiece can be stably held, and the bar-shaped workpiece can be continuously and stably supplied from the supply unit 6 to the workpiece holding unit 4.

  FIG. 3 is a block diagram showing an operation control mechanism of the component inspection apparatus according to the present embodiment. As described above, the component inspection apparatus 1 according to the present embodiment controls the operation of the slider unit 3, the work holding unit 4, and the inspection unit 5, and the control calculation unit 51 controls the slider according to the control program 52. The operation of the slider moving mechanism 53 of the unit 3, the holding member moving mechanism 54 of the work holding member, and the inspection unit 5 is controlled. The control of the inspection unit 5 performs an operation control of imaging by the imaging unit 56 included in the inspection unit and determination of pass / fail based on the imaging data.

  The slider unit 3 is composed of a rectilinear slider, a guide rail 11 fixed to the mounting reference surface 10 so as to extend linearly in the vertical direction (X-axis direction), and an arrow 90 in FIG. 1 along the guide rail 11. As shown, the slider 12 is configured to be reciprocally movable in the X-axis direction.

  The slider 12 can be moved to an arbitrary position on the guide rail 11 under the control of the control calculation unit 51 with the lower end as the start position 12a and the upper end as the end position 12b. In this embodiment, the movement width of the slider 12 along the guide rail 11 is approximately 650 mm.

  The work holding unit 4 is fixed to the surface of the slider 12 of the slider unit 3 as shown in FIGS. The work holding unit 4 includes a slide shaft 13 that extends in a direction orthogonal to the moving direction of the slider 12 (Y-axis direction), and a work holding member 14 that moves along the slide shaft 13. In this embodiment, the movement width of the work holding member 14 along the slide shaft 13 is approximately 70 mm. The work holding member 14 moves along the slide shaft 13 as indicated by an arrow 91 under the control of the control calculation unit 51 and can move to any point on the slide shaft 13.

The work holding member 14 includes a slide base 15 that is extrapolated to the slider shaft 13 and moves in the Y-axis direction with respect to the slider shaft 13, and a support member 16 that is fixed to the surface of the slide base 15. The support member 16 includes a pair of metal support plates 17 and 18 erected so that the two plates are parallel to each other, and a fixing member 19 that fixes the distance between the support plates 17 and 18 so as to be adjustable.
The pair of support plates 17 and 18 are respectively fixed to adjustment screws 20 a and 20 b that protrude from the upper and lower surfaces of the support plate fixing member 19. With this configuration, the distance between the support plates 17 and 18 can be changed by adjusting the screwing positions of the support plates 17 and 18 with respect to the adjustment screws 20a and 20b. Further, as will be described later, the support plates 17 and 18 and the adjusting screws 20a and 20b are detachable so that the support plates 17 and 18 can be exchanged according to the shape of the bar-shaped workpiece w to be inspected. Yes.

  The support plates 17 and 18 are provided with semicircular fitting grooves 21 and 22 for fitting the rod-shaped workpiece w along the upper edge thereof. It is preferable that the depth H of the fitting grooves 21 and 22 is configured to be approximately the outer diameter of the screw portion 101 of the rod-shaped workpiece w to be inspected. As shown in FIG. 5, the fitting groove 21 provided in the upper support plate 17 allows the support plate 17 to lock the flange portion 102 of the rod-shaped workpiece w held by the workpiece holding member 14. It is preferable that the outer diameter of the screw portion 101 of the rod-shaped workpiece is configured to correspond to the outer diameter.

  The lower support plate 18 supports a position below the brim portion 102 of the rod-shaped workpiece w. In the example of FIG. 5, the vicinity of the lower end of the screw portion 101 is supported.

  Thus, by inserting the rod-shaped workpiece w into the fitting grooves 21 and 22 provided on the side surfaces 17a and 18a of the two support plates 17 and 18, and supporting the rod-shaped workpiece w, the axis of the rod-shaped workpiece w follows the attachment reference plane. Held in a tilted direction.

  In addition, the support location of the rod-shaped workpiece w by the support plates 17 and 18 is not limited to the position immediately below the flange portion 102 and the position below the flange portion 102, and can be appropriately changed according to the shape of the rod-shaped workpiece w and the inspection location. . For example, in the case of inspecting the portion immediately below the brim, there is no particular limitation as long as the two positions are separated as shown in FIG. In this case, it is preferable to provide a positioning portion 57 that supports the lower end of the workpiece w so that the workpiece w is not displaced. In addition, the structure shown in FIG. 11 can be used suitably for the test | inspection of the rod-shaped workpiece | work which does not have a collar shown in FIG.2 (d) or FIG.2 (e).

  By holding the rod-shaped workpiece w in such an inclined state, the rod-shaped workpiece can be easily and safely held. That is, as shown in FIG. 5, since the flange portion 102 of the bar-shaped workpiece w is locked by the upper support plate 17, the gravity G is divided and component A in the direction along the surface of the support plate 17. Have For this reason, the rod-shaped workpiece w does not easily fall off from the support plate 17 due to the gravity of the rod-shaped workpiece w, and there is little possibility of dropping off by the movement of the slider 12 described later, and the holding to the support plates 17 and 18 is also supported. The rod-shaped workpiece w is disposed so as to straddle the plates 17 and 18 and can be reliably and easily held at a specific position by only inserting the rod-shaped workpiece w into the fitting grooves 21 and 22.

  The inspection unit 5 is provided at an intermediate position in the movement path of the slider 12 and is a rod-shaped workpiece from a direction (Y-axis direction) parallel to the attachment reference plane 10 and perpendicular to the movement direction (X-axis direction) of the slider 12. Image w. The timing of imaging is synchronized with the movement timing of the slider 12 under the control of the control calculation unit 51, and it is not necessary to stop the slider 12 for imaging. The inspection unit 5 measures the external dimensions of a preset portion of the bar-shaped workpiece w based on the captured image. As a result, Keyence Co., Ltd. TM-3000 etc. can be used suitably as the test | inspection unit 5 which test | inspects the shaft diameter, level | step difference, etc. about the said workpiece | work, and judges whether it is an allowable dimension.

  As shown in FIG. 6, the supply unit 6 is provided on the Y-axis direction side of the starting point position 12 a of the slider unit 3. The supply unit 6 includes a main body portion 23 provided with a storage groove 24 for stocking the rod-shaped workpiece w, and has a configuration in which an outlet portion 24a of the storage groove 24 opened on the side surface of the main body portion can be opened and closed by a shutter 25. The storage groove 24 of the main body 23 extends in a direction perpendicular to the attachment reference plane 10 (Z-axis direction), and the bar-shaped workpiece w in the storage groove 24 moves in the exit direction by gravity.

  The shutter 25 is positioned in a state in which the storage groove 24 of the main body 23 is closed, and is configured to be movable in the Y-axis direction while being biased to the original position as indicated by an arrow 92. The shutter 25 is pushed and moved by the support plates 17 and 18 as the work holding member 14 moves in the Y-axis direction, so that the outlet of the storage groove 24 is opened. The end surface 26 of the main body 23 where the outlet of the storage groove 24 opens is provided at a position close to the side surface 17a of the support plate 17 and is substantially parallel to a virtual surface including the side surface 17a of the pair of support plates 17 and 18. Are arranged as follows. As described above, when the support plates 17 and 18 move in the Y-axis direction and the shutter 25 moves in the opening direction, the leading bar-shaped workpiece w is discharged from the outlet 24 a of the storage groove 24. The rod-shaped workpiece w is supported by the side surfaces 17a, 18a of the support plates 17, 18, and when the workpiece holding member 14 further moves to the position of the fitting grooves 21, 22, the rod-shaped workpiece w is fitted into the fitting grooves 21, 22. Fits into. As described above, since the depth dimension H of the fitting grooves 21 and 22 is configured to be approximately the outer diameter dimension of the screw portion 101 of the rod-shaped workpiece, the rod-shaped workpieces are taken out one by one. When the work holding member 14 returns to the original position, the shutter 25 closes the outlet 24a of the storage groove.

  The sorting unit 7 is a mechanism for sorting non-defective products and defective products based on the result of image inspection of the rod-shaped workpiece w by the inspection unit 5, and the rod-shaped workpiece w held by the workpiece holding unit 4 is placed outside the apparatus. A good product chute 8 and a defective product chute 9 are provided. The non-defective product chute 8 is provided above the defective product chute 9.

  The non-defective product chute 8 and the defective product chute 9 are each configured to open upward, and discharge the bar-shaped workpiece w to the outside of the apparatus by gravity. Discharge pins 27 for removing the rod-shaped workpiece w held by the workpiece holding unit 4 are provided on the upstream side of the non-defective product chute 8 and the defective product chute 9, respectively.

  The discharge pin 27 includes a hypotenuse 28 that is inclined so as to move away from the attachment reference plane 10 as it moves away from the slider unit 3. The tip 29 of the discharge pin 27 is located closer to the attachment reference plane 10 than the screw portion 101 of the rod-shaped workpiece w held by the workpiece holding unit 4. As a result, the workpiece holding member 14 moves in the Y-axis direction along the slide shaft 13 at the height position of the non-defective product chute 8 or the defective product chute 9, so that the support plates 17 and 18 The supported bar-shaped workpiece w is pushed out from the fitting grooves 21 and 22 along the discharge pin 27 and dropped and dropped, and is guided to the outside of the apparatus by the non-defective product chute 8 or the defective product chute 9 positioned below. .

  Next, the operation of the component inspection apparatus according to the present embodiment will be described. FIG. 9 is an explanatory diagram of an operation procedure of the component inspection apparatus according to the present embodiment. In the component inspection apparatus 1 according to the present embodiment, as described above, the slider 12 can be moved in the X-axis direction by the slider unit 3, and the work holding member 14 can be moved in the Y-axis direction by the work holding unit 4. Is precisely controlled by the control calculation unit 51.

  In addition, as described above, the component inspection apparatus 1 is provided with the inspection unit 5 in the middle of the path of the slider unit 3, and the workpiece holding unit 4 and the supply unit 6 are selected adjacent to the path in the Y-axis direction. A unit 7 is provided. These units perform a desired operation by the above-described characteristic configuration by moving the workpiece holding member 14 to a predetermined region by the operations of the slider unit 3 and the workpiece holding unit 4. In FIG. 9, the region where the supply unit 6 is provided is the supply region 30, the region where the inspection unit 5 is provided is the inspection region 31, and the region of the sorting unit 7 where the defective product slider 9 is provided. Of the defective product discharge area 32 and the sorting unit 7, an area where the non-defective slider 8 is provided is referred to as a non-defective product discharge area 33.

  First, in a state where the slider is at the starting point position 12a of the slider unit, the work holding member 14 moves along the slide shaft 13 as shown by an arrow 80, so that the work holding member 14 moves to the supply region 30, The rod-shaped workpiece w is supplied from the supply unit 6 to the workpiece holding member 14, and the workpiece holding member 14 returns to the initial position of the slide shaft 13 while holding the rod-shaped workpiece w.

  Next, as indicated by an arrow 81, the slider 12 rises and passes through the inspection region 31. When passing through the inspection area 31, the inspection unit 5 performs an image inspection of the bar-shaped workpiece w, and the inspection result is output to the control calculation unit 51.

  As a result of the inspection by the inspection unit 5, when the rod-shaped workpiece w is a defective product, the slider 12 stops at the position of the defective product discharge area 32 as shown by an arrow 82, and then, as shown by an arrow 83, When the work holding member 14 moves along the slide shaft 13, the bar-shaped work w is dropped from the work holding member 14 by the discharge pin 27 and is discharged to the outside by the defective product chute 9.

  On the other hand, as a result of the inspection by the inspection unit 5, when the rod-shaped workpiece w is a non-defective product, the slider 12 stops at the position of the non-defective product discharge area 33 as shown by an arrow 84, and then, as shown by an arrow 85, When the work holding member 14 moves along the slide shaft 13, the bar-shaped work w is dropped from the work holding member 14 by the discharge pin 27 and is discharged to the outside by the non-defective product chute 8.

  In the defective product discharge area 32 or the non-defective product discharge area 33, after the bar-shaped work w is discharged outside the apparatus, the work holding member 14 returns to the initial position of the slide shaft 13 without holding the bar-shaped work w, and then the slider The unit 3 returns the slider 12 to the starting point position 12a. Note that the workpiece holding member 14 passes through the inspection region 31 in the middle of the path along which the slider unit moves to the start point position 12a. At this time, the inspection unit 5 does not operate.

  By repeatedly performing the above operation, the bar-shaped workpiece w can be inspected continuously.

(Second Embodiment)
FIG. 10 is a perspective view schematically showing the configuration of the component inspection apparatus according to the second embodiment of the present invention. Since the component inspection apparatus 1a according to the present embodiment has elements in common with the component inspection apparatus 1 according to the first embodiment, the following description will mainly focus on differences.

  The component inspection device 1a includes a main body frame 2, a slider unit 3a, a work holding unit 4a, imaging devices 45 and 46 constituting the inspection unit 5a, a supply unit 6a, and a sorting unit 7a.

  Unlike the first embodiment, the main body frame 2a is configured to be horizontally long, and is provided with a mounting reference surface 10a on the front surface. The attachment reference surface 10a is formed in a rectangular shape that is long in the horizontal direction, and has an inclination angle θ with respect to the vertical direction.

  In the present embodiment, the direction is specified with reference to the attachment reference surface 10a, and is defined as follows. In the present embodiment, the attachment reference plane 10 constitutes an XY plane. In FIG. 1, the X axis is the left-right direction of the attachment reference plane, the Y axis is the vertical direction of the attachment reference plane, and the Z axis is the direction perpendicular to the attachment reference plane.

  The slider unit 3a is composed of a linear slider, and the guide rail 11 is fixed to the mounting reference surface 10a so as to extend linearly in the left-right direction (X-axis direction). In FIG. 10, the slider 12 can be moved to any position between the right end as the start end position 12a and the left end as the end position 12b.

  As shown in FIGS. 1 and 4, the work holding unit 4 a is fixed to the surface of the slider 12 of the slider unit 3. The work holding unit 4a includes a pair of metal support plates 17 and 18 erected so that the two pieces are parallel to each other, and a fixing member 19 that fixes the distance between the support plates 17 and 18 so as to be adjustable. . The support plates 17 and 18 are provided with semicircular fitting grooves 21 and 22 for fitting the rod-shaped workpiece w along the upper edge thereof.

  The inspection unit 5 a includes two imaging devices 45 and 46 provided at an intermediate position in the movement path of the slider 12. The first imaging device 45 is arranged so that the optical axis is located in the Y-axis direction from above the slider unit 3a. The second imaging device 46 is arranged so that the optical axis is positioned in the Z-axis direction from the front side in the Z-axis direction with respect to the slider unit.

  The first imaging device 45 images the head 100 of the rod-shaped workpiece w in the axial direction, and the second imaging device images the rod-shaped workpiece w from the side.

  The sorting unit 7 is provided with a non-defective product chute 8 and a defective product chute 9, and a drive device 47 for sliding the positions of these chutes. Further, a discharge pin 27 for removing the rod-shaped workpiece w held by the workpiece holding unit 4a is provided in the vicinity of the end position of the slider unit 3a, and the rod-shaped workpiece dropped by the discharge pin 27 is removed from the non-defective chute 8 or Drop on the defective product chute 9.

  The driving device 47 slides the non-defective product chute 8 and the defective product chute 9 in the X-axis direction as indicated by an arrow 93 according to the inspection result of the inspection unit 5a, and the dropped bar-shaped workpiece w is shot according to the inspection result. Capture with. The open portion of the non-defective chute 9 when the defective chute 9 is in the capture position is closed by the shutter 48 so that the rod-shaped workpiece determined to be defective does not intrude into the non-defective chute 8 by mistake.

  Next, the operation of the component inspection apparatus according to the present embodiment will be described. In the component inspection apparatus 1 according to the present embodiment, as described above, the work holding unit 4a can be moved in the X-axis direction by the slider unit 3, and the respective operation positions are precisely controlled by the control calculation unit 51. Yes.

  The slider unit 3a has the left side in the drawing as the origin with respect to the supply unit 6a, and normally the slider 12 is disposed at this position. First, the slider unit 3a moves the slider 12 to the starting position 12a, and holds the bar-shaped workpiece w from the supply unit 6a to the workpiece holding unit 4a.

  Next, the slider 12 is moved in the direction of the end position 12b, and image inspection of the bar-shaped workpiece w is performed by the inspection unit 5a at the passing timing. The inspection result is output to the control calculation unit 51.

  The driving device 47 moves the non-defective product chute 8 and the defective product chute 9 according to the result of the inspection by the inspection unit 5 and performs selection according to the inspection result. Thereafter, the slider unit 3 returns the slider 12 to the origin. By repeatedly performing the above operation, the bar-shaped workpiece w can be inspected continuously.

  As described above, according to the present invention, it is possible to support the rod-shaped workpiece stably and easily by having the inclined mounting reference surface and supporting the rod-shaped workpiece w along this, and in this state Image inspection can be performed by an inspection unit in the middle of the path of the linear slider. For this reason, the apparatus in which supply, movement, imaging, and detachment of the bar-shaped workpiece are easy and stable can be simplified. Furthermore, since the holding member that supports the rod-shaped workpiece can be widely used in accordance with the shape of the rod-shaped workpiece, it is possible to suitably inspect workpieces of various types of small lots.

  In addition, this invention is not limited to the said embodiment, It can implement in another various aspect. The component inspection apparatus according to the present embodiment is configured such that the attachment reference plane of the main body frame is inclined with respect to the vertical direction, and other members attached to the attachment reference plane are also inclined, but at least the workpiece What is necessary is just to be comprised so that the instruction | indication direction of the workpiece | work by the support plates 17 and 18 of the holding | maintenance unit 4 may incline. By holding the workpiece tilted, it is possible to easily supply and discharge the workpiece, and effects such as stability of holding the workpiece during movement can be obtained.

  Further, for example, the component inspection apparatus according to the present embodiment is configured to select and discharge non-defective products and defective products in the vertical direction according to the vertical position of the slider as shown in FIG. The workpiece holding unit 4 may be configured to be movable in both the left and right directions with respect to the slider, and may be configured to distinguish and discharge a good product and a defective product on the left and right of the slider unit.

  In addition, the structure of the support plate that supports the rod-shaped unit w supports two places immediately below the flange and the vicinity of the lower end of the screw portion, but at least spaced apart that can be stably supported according to the shape of the workpiece. The configuration is not particularly limited as long as it has two points. For example, in the biaxial screw workpiece shown in FIG. 2B, the flange portion 102 is supported by the lower support plate, and the upper screw portion 101a having a large diameter is supported by the upper support plate. It may be configured as follows.

DESCRIPTION OF SYMBOLS 1,1a Component inspection apparatus 2,2a Main body frame 3,3a Slider unit 4,4a Work holding unit 5 Inspection unit 6,6a Supply unit 7,7a Sorting unit 8 Good product chute 9 Defective product chute 10 Mounting reference plane 11 Guide Rail 12 Slider 12a Start position 12b End position 13 Slide shaft 14 Work holding member 15 Slide base 16 Support members 17, 18 Support plates 17a, 18a Support plate side 19 Support plate fixing members 20a, 20b Adjustment screws 21, 22 Fitting groove 23 Main body 24 Storage groove 24a Storage groove outlet 25 Shutter 26 End surface 27 Discharge pin 28 Oblique side 29 Tip 30 Supply area 31 Inspection area 32 Defective product discharge area 33 Non-defective product discharge area 45 First imaging device 46 Second imaging device 47 Drive device 48 Shutter 51 Control operation part 52 Control Program 53 Slider moving mechanism 54 Holding member moving mechanism 56 Imaging unit 57 Positioning unit 100 Screw head 101 Screw portion 102 Head

Claims (5)

A part inspection device used for inspection of a bar-shaped workpiece,
A body frame having a mounting reference surface;
A slider that is disposed along the reference mounting surface of the main body frame and is capable of reciprocating between a start position and an end position;
A set of plate-like members that are arranged in parallel in the vertical direction and that support locations separated in the axial direction of the rod-shaped workpiece are provided, and the axis of the rod-shaped workpiece is inclined at a predetermined angle with respect to the vertical direction. A holding member for holding a rod-shaped workpiece;
An inspection unit that is provided in the moving path of the slider and inspects the quality of the bar-shaped workpiece held by the holding member;
A supply unit that is provided on the start position side with respect to the inspection unit in the movement path of the slider, and that supplies the rod-shaped workpiece to the holding member;
A sorting unit that is provided on the end position side with respect to the inspection unit in the movement path of the slider, and that sorts the bar-shaped workpiece inspected by the inspection unit according to quality and removes it from the holding member. And parts inspection equipment. The main body frame is configured such that the attachment reference surface is provided with an inclination angle at a predetermined angle with respect to a vertical direction,
2. The component inspection apparatus according to claim 1, wherein the holding member holds the rod-shaped workpiece such that an axis of the rod-shaped workpiece is in a direction along the mounting reference plane.   3. The component inspection apparatus according to claim 1, wherein the slider moves in a vertical direction along a reference mounting surface of the main body frame with a lower end as a starting point position. 4.   The holding member is provided in the slider so as to be movable in a direction intersecting with the moving path of the slider, and the supply unit and the sorting unit are provided in a moving position of the holding member with respect to the slider, and the holding The component inspection apparatus according to claim 3, wherein the rod-shaped workpiece is attached to and detached from the holding member by movement of the member.   5. The sorting unit according to claim 4, wherein the sorting unit is configured to sort and remove defective products at a lower position and non-defective products at an upper position according to a moving position of the slider. Parts inspection device.

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