JP2019142693A - Shaft body processing apparatus - Google Patents

Abstract

To provide a shaft body processing apparatus capable of performing processing by correcting an inclination of a shaft body.SOLUTION: A shaft body holding disk 42 includes a recess 44 for housing a screw 32. The screw 32 housed in the recess 44 is carried into an imaging unit by a rotation of the shaft body holding disk 42 (FIG. 8A). When approaching the imaging unit, a flexible member 408 of a roller 400 comes into contact with a head portion 32a of the screw 32 and is recessed (FIG. 8B). When the screw 32 is located in the imaging unit, the head portion 32a is pressed by the flexible member 408, and a main body 32b becomes vertical, and imaging can be performed through a slit 21. Since the flexible member 408 is transparent, the head portion 32a can also be imaged.SELECTED DRAWING: Figure 8

Description

  The present invention relates to an apparatus for performing processing such as inspection on a shaft body having a head such as a screw or a nail.

  An apparatus for inspecting a shaft body such as a screw is used. For example, Patent Document 1 discloses an inspection apparatus as shown in FIG. The shaft body 4 is suspended and held in the concave portion of the disk 2 having a concave portion on the outer periphery. In the imaging unit, the shaft body 4 is imaged by the camera 22 and inspected for dimensions and scratches. As the disk 2 rotates, the shaft body 4 is successively brought into the imaging unit.

  Therefore, the shaft body can be inspected continuously.

JP2012-063050

  In order to increase the number of inspections per unit time in the inspection apparatus as described above, the rotational speed of the disk 2 may be increased. However, when the rotation speed is increased, the suspended shaft body 4 is inclined in the moving direction. For this reason, the image captured by the camera 22 is tilted, and there is a possibility that correct inspection cannot be performed.

  For example, if the shaft body 4 is inclined, the small-diameter portion 4b is not correctly provided perpendicular to the head portion 4a of the shaft body 4, or the small-diameter portion 4b is correctly perpendicular to the head portion 4a of the shaft body 4. It is impossible to distinguish whether the shaft body 4 is tilted due to the movement. For this reason, it was not possible to inspect whether the small-diameter portion 4b is structurally correctly provided.

  Further, as shown in FIG. 18, the imaging unit is provided with a shield 12 to avoid the influence of disturbance light. The camera 22 images the shaft body 4 through the vertical slit 14 provided in the shield 12. However, if the shaft body 4 is tilted, the tip of the shaft body 3 is hidden by the shield 12, which causes a problem that the entire shaft body 4 cannot be imaged.

  Furthermore, when the tip of the shaft body 4 is tilted in the direction approaching the camera 22, there is a problem that the length of the shaft body is picked up shorter than the actual length.

  In the prior art shown in FIG. X, the roller 6 that abuts from the inside of the disk 2 is provided on the head 4a, and the correction member 20 that abuts from the inside of the disk 2 to the small diameter portion 4b is provided. To correct.

  However, in the prior art shown in FIG. 18, it has not been possible to correct the horizontal tilt with respect to the camera 22.

  Such correction of the inclination of the shaft body is required not only for the inspection apparatus but also for all apparatuses that perform processing by hanging the shaft body.

  SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide a shaft body processing apparatus capable of performing processing by correcting the inclination of a shaft body.

  Several independently applicable features of the invention are listed below.

(1) A shaft body processing apparatus according to the present invention is a recess for hanging and holding a shaft body having a head and a small diameter portion smaller in diameter than the head by the head, and having a width wider than the head. A recess having a narrower and narrower width than the small-diameter portion is provided, and the shaft body holding portion that moves in a predetermined direction and the shaft body that is held and moved by the shaft body holding portion are processed. A processing unit provided in the vicinity of the path, and a pressing member that presses the head against the shaft body holding unit from the upper surface of the head of the shaft body held by the shaft body holding unit in the processing unit.

  Therefore, in the processing unit, the shaft body can be held straight and correct processing can be performed.

(2) The shaft body processing apparatus according to the present invention is characterized in that the pressing member is a flexible roller arranged so as to rotate in contact with the head of the shaft body held by the shaft body holding portion from above. It is said.

  Therefore, the head of the shaft body can be securely pressed down.

(3) A shaft body processing apparatus according to the present invention is configured to include a disk on which a shaft body holding portion rotates, and the concave portion is provided on the outer peripheral portion of the disk, and the processing portion is on the outer peripheral side of the disk. It has the camera which images a shaft body from.

  Therefore, it is possible to efficiently perform imaging with a camera using a rotating disk.

(4) The shaft body processing apparatus according to the present invention is characterized in that the flexible roller is formed of a member having permeability at least in a portion that abuts against the head of the shaft body and is recessed.

  Therefore, the head can be imaged via the roller.

(5) The shaft body processing apparatus according to the present invention includes a shielding body having an imaging slit to avoid disturbance light when the processing section images the shaft body held by the shaft body holding section with a camera. It is a feature.

  Therefore, a more precise captured image can be obtained.

(6) In the shaft body processing apparatus according to the present invention, the shield is formed in a cylindrical shape, and the inside of the cylinder is configured with a color or material that reflects illumination light from the lower part of the cylinder.

  Therefore, a clearer captured image can be obtained.

(7) A shaft body processing apparatus according to the present invention moves in a predetermined direction while supporting a shaft body having a head and a small-diameter portion having a smaller diameter than the head suspended from the shaft body holding portion by the head. Then, the shaft is pressed against the shaft body holding portion from the upper surface of the head of the shaft body supported by being suspended, and the shaft body whose inclination is corrected is processed.

  Therefore, in the processing unit, the shaft body can be held straight and correct processing can be performed.

It is a top view of the screw inspection device by one embodiment to this invention. It is a figure which shows the recessed part 44 of the shaft body holding disc 42. FIG. 2A is a side sectional view, and FIG. 2B is a plan view. It is the detail of conveyance guide front-end | tip part vicinity. It is the detail of the sensor 70. FIG. It is the detail of the sensor 82. FIG. It is a figure which shows the state of the screw 32 seen from the cameras 80 and 85. FIG. It is a figure which shows the detail of the shielding cylinder 23. FIG. It is a figure which shows the effect | action of the roller. It is a figure which shows the attachment structure of the roller. This is a hardware configuration of the control unit 84. 3 is a flowchart of a control program 106. 3 is a flowchart of a control program 106. 3 is a flowchart of a control program 106. It is a figure which shows the index provided to the recessed part. It is an example of a test result table. 7 is a cross-sectional view of a non-defective product collection passage 94. FIG. It is a figure which shows the recessed part 44 by other embodiment. It is a figure for demonstrating the conventional shaft body processing apparatus.

1. Structure FIG. 1 shows a shaft inspection apparatus according to an embodiment of the present invention. The conveyance guide 34 which is a shaft body conveyance unit has a guide space 36 between the left and right guide members 34a and 34b. The width of the guide space 36 is narrower than the head 32 a of the screw 32 to be inspected and wider than the main body 32 b of the screw 32. Further, the conveyance guide 34 is configured to gradually become lower in the direction of the arrow 38.

  Therefore, the screw 32 is conveyed in the direction of the arrow 38 while the head 32a is supported by the guide members 34a and 34b.

  A shaft holding disk 42 is provided in the vicinity of the tip of the transport guide 34. The shaft body holding disk 42 is rotated in the direction of the arrow 46 by a driving means (not shown) such as a motor. Concave portions 44 are provided at predetermined intervals on the outer periphery of the shaft body holding disk 42. As shown in FIG. 2, the width W of the recess 44 is narrower than the head portion 32 a of the screw 32 and wider than the main body portion 32 b of the screw 32. Therefore, the concave portion 44 can support the head portion 32 a of the screw 32.

  Returning to FIG. 1, a rotating body 48 as a rotating means is provided at the tip of the guide member 34 on the traveling direction side of the shaft body holding disk 42.

  In FIG. 3, the enlarged view of the rotary body 48 vicinity is shown. When the shaft body holding disk 42 rotates and the conveyance center line 40 coincides with the center of the concave portion 44 (or when it coincides with the center), air is blown out from a nozzle (not shown), and the screw 32 is moved in the direction of the arrow 68. Extrude. At the same time, the main body 32 b of the screw 32 (the head 32 a is omitted in the drawing) is in contact with the rotating body 48 that rotates in the direction of the arrow 64. As a result, the screw 32 is rotated in the direction of the arrow 11 and pushed out in the direction of the arrow 68.

  Thus, in this embodiment, since the screw 32 is pushed out in the direction of the arrow 11 by the rotating body 48, the probability that the screw 32 can be properly stored in the recess 44 can be increased. If the screw 32 is not properly stored in the recess 44, the rotating body 48 again contacts the main body 32b of the screw 32 and pushes the screw 32 in the direction of the arrow 68 to be stored in the correct position. It becomes possible to do.

  Returning to FIG. 1, a nozzle 86 for blowing air is provided in the vicinity of the tip of the conveyance guide 34. The nozzle 86 is controlled by the control unit 84 and applies a force to push the screw 32 into the recess 44.

  Optical sensors 70, 72, and 74 for determining whether or not the screw 32 is held in the concave portion 44 are provided on the outer periphery of the shaft body holding disk 42. Details of the optical sensor 70 are shown in FIG. A light receiving element 70b is provided so as to face the light emitting element 70a. Therefore, if the screw 32 is held in the recess 44, light from the light emitting element 70a is blocked, and if not held, light from the light emitting element 70a is not blocked. Accordingly, it can be determined that if there is an output from the light receiving element 70b (if light is received), the screw 32 is not held, and if there is no output (if no light is received), the screw 32 is held. The other photosensors 72 and 74 have the same configuration.

  As shown in FIG. 4, the light-emitting element 70a and the light-receiving element 70b are installed not on the head 32a but obliquely (inclined 15 degrees in this embodiment). Thereby, even if the head part 32a is thin, the presence or absence of the screw 32 can be reliably detected. In FIG. 4, the head portion 32a is detected, but the main body portion 32b may be detected.

  Returning to FIG. 1, an index optical sensor 82 is also provided. FIG. 5 shows details of the optical sensor 82. A light emitting element 82a and a light receiving element 82b are provided so as to sandwich the shaft body holding disk 42. The light receiving element 82b receives light at the concave portion 44, and the light receiving element 82b does not receive light at the inner portion of the concave portion 44. Therefore, it can be determined that if there is an output from the light receiving element 70b (if light is received), it is the concave portion 44, and if there is no output (if no light is received), it is not the concave portion 44. Outputs of these optical sensors 70, 72, 74, and 82 are given to the control unit 84.

  A guide plate 91 is provided on the outer periphery of the shaft body holding disk 42. By providing the guide plate 91, the screw 32 of the recess 44 is prevented from jumping out.

  A camera 79 for measuring the screw 32 from above and cameras 80 and 85 for measuring from the side are provided. The camera 80 is for imaging the head side surface, and the camera 85 is for imaging the main body side surface. With these cameras 79, 80, and 85, detailed dimensions of the head of the screw 32, screw failure, and the like can be measured.

  FIG. 6 shows details of the vicinity of the screw 32 as seen from the cameras 80 and 85. In the vicinity of the front surface of the camera 80, the guide plate 91 is formed thin so that an image can be captured up to the vicinity of the connection portion between the main body 32b and the head 32a.

  A shielding cylinder 23 is provided below the shaft body holding disk 42. The outer surface of the shielding cylinder 23 is black. A slit 23 is provided at a position of the shielding cylinder 23 facing the camera 85. The camera 85 images the screw 32 through the slit 23.

  FIG. 7 shows details of the shielding cylinder 23. The outer side of the cylinder is black and the inner side is white that easily reflects light. A light source 81 is provided on the bottom surface of the shielding cylinder 23. By irradiating with the light source 81, the screw 32 can be imaged more clearly.

  A slit 21 for imaging is provided on the front surface, and a slit 25 for screw introduction / discharge is provided on the left and right side surfaces. When the screw 32 introduced from the slit on the right side comes to the central portion of the shielding cylinder 23, imaging by the camera 85 is performed. Since the outside of the shielding cylinder 23 is black, a captured image can be obtained with less influence of disturbance light. Since the inside of the shielding cylinder 23 is white, the screw 32 can be efficiently irradiated with the light from the light source 81. In addition, a black background plate 17 is provided behind the slit 21 for imaging so that the screw 32 in the image can be easily identified.

  Returning to FIG. 6, the roller 400 is provided so as to come into contact with the head portion 32 a of the screw 32 carried to the imaging position from above. The roller 400 is rotatably held by a holding body 402. The holding body 402 is rotatably held by the guide plate 91 at the root portion 404.

  Illumination 410 is provided inside the roller 400. The illumination 410 is held by a holding body 412. The holding body 412 is rotatably held by the guide plate 91 at the root portion 414.

  A state in which the holding bodies 402 and 412 are rotated is indicated by a broken line. When the shaft holding disk 42 is replaced, it can be performed in a broken line state.

  The attachment structure of the roller 400 is shown in FIG. FIG. 9 is a view of the roller 400 of FIG. 6 as viewed from the back side of the drawing.

  The outer periphery of the roller 400 is composed of a translucent or transparent flexible member 408 (in this embodiment, a urethane material is used). The roller 400 is configured to be rotatable about a shaft 402 provided on the movable plate 406. A shaft 412 is provided at the other end of the movable plate 406. The shaft 412 is fixed to a bracket 414 fixed to the base plate 410. Therefore, the movable plate 406 including the roller 400 can rotate in the direction of arrow A about the shaft 412.

  A U-shaped member 420 is fixed to the tip of the base plate 410. A through hole (not shown) is provided in the upper portion of the U-shaped member 420, and the tip of a pin 426 erected on the base plate 410 is inserted. A spring stopper 422 having a through hole (not shown) is provided at the center of the movable plate 406. The pin 426 described above is passed through the through hole. A spring 424 (biasing member) is provided between the upper portion of the U-shaped member 420 and the spring stopper 422.

  When the head portion 32a of the screw 32 comes into contact with the flexible member 408 of the roller 400, the movable plate 406 including the roller 400 rotates in the direction of arrow A, resulting in a state as shown in FIG. 9B. At this time, the spring 400 is compressed so that the roller 400 does not rotate excessively.

  FIG. 8 shows a state in which the screw 32 held on the shaft body holding disk 42 is carried to the imaging unit and held vertically by the roller 400. As shown in FIG. 8A, when the rotational speed of the shaft body holding disk 42 is increased, the lower portion of the screw 32 is inclined in the direction opposite to the traveling direction.

  The gap between the upper surface of the shaft body holding disk 42 and the lower end of the roller 400 is formed to be narrower than the thickness of the head 32 a of the screw 32. In this embodiment, the head 32 is 1 mm shorter than the thickness 2 mm (the gap is 1 mm). Therefore, when the shaft body holding disk 42 further rotates, the head portion 32a of the screw 32 comes into contact with the roller 400 as shown in FIG. 8B. At this time, the flexible member 408 of the roller 400 is recessed by the head portion 32. In this embodiment, the flexible member 408 is formed so as to be wider than the head portion 32, but may be formed so as to be narrow.

  When the shaft body holding disk 42 further rotates from the state shown in FIG. 8B, the head 32a of the screw 32 is fully pressed by the flexible member 408 of the roller 400 as shown in FIG. 8C. Therefore, the back surface of the head portion 32a is evenly pressed against the upper surface of the shaft body holding disk 42, and the screw 32 is held vertically.

  Imaging by the cameras 80 and 85 in FIG. 1 is controlled to be performed in this state. As shown in FIG. 1, a light source 410 is provided behind the roller 400. Therefore, the image of the head 32a captured by the camera 80 is clearly captured as a silhouette. Moreover, since the flexible member 408 has translucency (transparency), the head 32a can be imaged.

  The camera 85 images the main body 32b in the state of FIG. Since the screw 32 is vertical by the pressing by the roller 400, the entire main body 23 b can be seen from the slit 21 of the shielding cylinder 23. Therefore, the camera body 85 can image the entire main body 23b.

  Returning to FIG. 1, the image captured as described above is sent to the control unit 84 and an inspection based on the image is performed.

  Further, on the shaft holding disk 42, a defective product drop nozzle 88 for dropping the defective screw 32 into the defective product collecting passage 92 and a good product dropping nozzle 90 for dropping the good screw 32 into the good product collecting passage 94 are provided. Is provided.

FIG. 10 shows details of the control circuit. Connected to the CPU 100 are an operation touch panel 102, a recording device 104, nozzles 86, 88, 90, sensors 70, 72, 74, an index sensor 82, and cameras 79, 80, 85. The recording device 104 records a control program 106 for controlling each unit.

2. Flowcharts of the inspection process control program 106 are shown in FIGS. In the following description, each process is described as being performed sequentially, but the processes may be performed in parallel. The CPU 100 determines whether or not the index sensor 82 has detected the recess 44 (step S1). When the recess 44 is detected, an index ID is assigned to the recess (step S2). For example, as shown in FIG. 14, when 30 concave portions 44 are provided in the shaft body holding disk 42, index IDs 1 to 30 are assigned to the respective concave portions 44.

  As shown in FIG. 14, the index sensor 82, the position where the screw 32 is transferred by the conveyance guide 34, the position of each sensor 70, 72, 74, the position of the dimension sensor 76, the camera 79, 80, 85, etc. The relationship is predetermined. Therefore, by specifying the index ID of the recess 44 located in the index sensor 82, the index ID of the recess 44 in the position of another sensor or the like can also be specified.

  The CPU 100 drives the nozzle 86 and pushes the screw 32 from the conveyance guide 34 toward the concave portion 44 (step S3). In the flowchart, it is shown that the nozzle 86 is driven after the index ID is assigned to the recess 44. However, in actuality, the nozzle 86 is driven at the same time that the index sensor 82 detects the recess 44. (The same applies in the following processing).

  At this time, the screw 32 is urged toward the concave portion 44 by the rotating body 48 as described above. As shown in FIG. 14, when the index sensor 82 assigns “1” as the index ID to the recess 44, the screw 32 is stored in the recess 44 to which the index ID “29” is assigned. .

  Further, the CPU 100 acquires the output of the sensor 70 and records the presence / absence of the screw 32 (step S4). Here, as shown in FIG. 14, it is determined whether or not a screw is housed in the recess 44 to which the index ID “23” is assigned. Originally, the screws 32 are accommodated in all the recesses 44, but there are also recesses 44 in which the screws 32 are not accommodated due to a delay in conveyance from the conveyance guide 34 or the like. The presence or absence of the screw 32 is recorded in the recording device 104 as a table as shown in FIG.

  The CPU 100 determines whether or not the screw 32 exists at the position of the camera 79 (step S5). If present, the CPU 100 turns on a light source (not shown) and captures an image from the camera 79 (step S5). Subsequently, based on the acquired image, the CPU 100 determines whether the shape, dimensions, and the like of the head 32a of the screw 32 are within the standard. Similarly, based on the image of the camera 80, it is determined whether or not the screw shape, plating state, dimensions, etc. of the main body portion 32b of the screw 32 are within the standard, and are recorded on the table.

  In this embodiment, the head 32a of the screw 32 is pushed in the imaging unit so as to be straightened. Therefore, an image obtained by imaging the entire main body 32b can be used for inspection through the slit 21 in FIG. Further, in the case of the defective screw 32 in which the head portion 32a and the main body portion 32b are not formed vertically, the main body portion 32b does not become straight and a defect can be easily found. In a remarkable case, the tip of the main body 32b is hidden by the shielding cylinder 23, so that a defect can be easily found. The CPU 100 records the determination result in the table of FIG. 15 (step S6).

  In step S5, if the screw 32 is not present, steps S5 and S6 are not executed. Thereby, it is possible to avoid performing useless determination processing.

  In step S11, the CPU 100 determines whether or not the screw 32 is present at the position of the defective product dropout actuator 88 (sensor 74). If it exists, it is determined whether or not an abnormality processing flag is attached to the screw 32 (step S12). In the normal state, since no abnormality processing flag is attached, the process proceeds to step S13. The abnormality processing flag will be described later.

  In step S13, the CPU 100 determines whether or not the screw 32 is defective. If any one of the items in the table of FIG. 15 is “No”, it is determined to be defective. If it is defective (“No”), the CPU 100 operates the defective product dropout actuator 88 to drop the screw 32 from the recess 44 (step S14). The dropped defective screws 32 are collected by a defective product collecting section (not shown) through a defective product collecting path 92 (see FIG. 1). Further, the CPU 100 determines whether or not the screw 32 has been dropped based on the output of the sensor 74 (step S15). If it has dropped out as scheduled, the process proceeds to step S16. If it has not dropped out, an abnormal process is performed. The abnormality process will be described later.

  In step S13, if the screw 32 is not defective (if all items are “good”), the CPU 100 proceeds to step S16.

  In step S <b> 16, the CPU 100 determines whether or not the screw 32 exists at the position of the non-defective product dropping actuator 90 (sensor 72). If it exists, it is determined in step S17 whether the screw 32 has an abnormality processing flag. Here, the description will be made assuming that no abnormality processing flag is attached. In step S18, the CPU 100 directs the non-defective product collection passage 94 toward the non-defective product collection box 200 (see FIG. 16). In the normal state, the course change plate 304 is in the position of the solid line, and the non-defective product collection passage 94 faces the non-defective product collection box 300, so that the state is left as it is.

  The CPU 100 operates the non-defective product dropping actuator 90 to drop the non-defective screw 32 in the recess 44 into the non-defective product collecting passage 94. As a result, the non-defective screw 32 is collected in the non-defective product collection box 300. If the non-defective screw 32 is not dropped by the non-defective nozzle 90, it can be dropped into the non-defective collection path 94 by the forced drop guide 96 shown in FIG. The forcible drop guide 96 abuts against the head 32a, gradually pushes the screw 32 to the outer periphery of the shaft body holding disk 42, and finally drops off.

  When the above processing is completed, the CPU 100 repeatedly executes step S1 and subsequent steps.

(About abnormal processing)
Next, a description will be given of a case where, in step S14, the screw 32 is not dropped although the defective screw 32 is about to be removed from the recess 44. If left untreated, the defective screw 32 is dropped into the non-defective product collection passage 94 by the non-defective product drop nozzle 90 or the forced drop guide 96. In this case, defective products are mixed in non-defective products.

  Therefore, in this embodiment, when the screw 32 determined to be a defective product is not dropped by the defective product dropping nozzle 88 (step S15), the following abnormality processing is performed. The CPU 100 records an abnormality processing flag for all the screws (all index IDs) in the table shown in FIG. 15 (step S20). Next, the CPU 100 directs the non-defective product collection path 94 toward the work-in-progress collection box 302 (step S21).

  FIG. 16 shows a side cross section of the non-defective product collection passage 94. At the bottom of the non-defective product collection passage 94, a course changing plate 304 that can be rotated about a shaft 306 is provided. The course change plate 304 is held at a position indicated by a solid line in the drawing in a normal state. Therefore, the screw 32 dropped in the non-defective product collection passage 94 is collected in the non-defective product collection box 300.

  In step S <b> 21, the CPU 100 controls driving means (not shown) such as a motor to rotate the course changing plate 304 to a state indicated by a two-dot chain line. As a result, the screw 32 dropped in the non-defective product collection passage 94 is collected in the work-in-process collection box 302.

  Therefore, although the defective screw 32 remaining in the recess 44 in step S14 is dropped into the non-defective product collection passage 94 in step S19, the work-in-process collection box 302 is removed. Will be collected.

  Further, in this embodiment, an abnormality flag is recorded for all the screws 32 held on the shaft body holding disk 42 when the above abnormality occurs. Therefore, thereafter, the CPU 100 drops the screw 32 in which these abnormality processing flags are recorded into the non-defective product collection path 94 and collects them in the work-in-process collection box 302 (steps S12, S17, S19).

  Note that only defective screws 32 that have remained in the recess 44 even though they should have been dropped may be collected in the work-in-process collection box 302. In this embodiment, for the sake of safety, all the screws 32 held by the shaft body holding disc 42 are collected in the work-in-process collection box 302 when an abnormality occurs.

  When the screw 32 in which the abnormality processing flag is not recorded (the screw 32 held in the shaft body holding disk 42 after the abnormality has occurred) is found, the CPU 100 displays the course changing plate 304 of the non-defective product collection passage 94 in FIG. To the position indicated by the solid line (step S18). Thus, thereafter, the screws 32 dropped in the non-defective product collection passage 94 are collected in the non-defective product collection box 300.

(About the shape of the recess 44)
FIG. 17 shows details of the recess 44. 17A is a plan view and FIG. 17B is a side view. In this embodiment, as shown in FIG. 17B, a step 44 a is provided on the upper portion of the recess 44. As a result, as shown by a two-dot chain line, the head 32a can be supported by the two corners 44b and 44c of the step 44a even with respect to the screw 32 having the head 32a in the shape of a plate, and can be held stably. Can be realized. Two or more steps (a plurality of steps) may be provided.

  Note that it is preferable to provide a step so that the line connecting the two corners 44b and 44c of the step matches the inclination of the head portion 32a. In many cases, since the inclination of this 32a is 90 degrees, it is appropriate to provide a step so as to match this. Further, if the width W2 of the upper portion of the step 44a is made smaller than the diameter of the head portion 32a, the screw 32 having a non-inclined head portion 32a (screw 32 as shown in FIG. 2) is also used. Can be used.

As shown in FIG. 17B, the front side in the traveling direction 46 of the recess 44 has rounded corners. Thereby, the movement of the screw 32 from the conveyance guide 34 to the recessed part 44 can be performed smoothly. This is because the corners do not abut against the screw 32 and prevent the screw 32 from entering the recess 44.

3. Other embodiments
(1) In the above embodiment, the inspection apparatus is described as an example of the processing apparatus. However, the present invention can also be applied to an apparatus that performs processing such as painting by holding a shaft body such as a screw on the shaft body holding disk 42.

(2) In the above embodiment, the screw 32 has been described as an example of the shaft. However, any shaft body having at least a head and having a diameter smaller than the diameter of the head can be similarly applied. For example, it can be applied to nails, pins, and the like.

(3) In the above embodiment, the rotating shaft body holding disk 42 is used as the shaft body holding portion. However, a shaft body holding portion (for example, a linear endless track) that moves linearly may be used.

(4) In the above embodiment, the non-defective product and the defective product are collected in the collection box. However, the defective product may be dropped and the good product may be transferred to the manufacturing process and used as it is.

(5) In the above embodiment, the screws 32 determined to be non-defective are dropped into the non-defective product collecting passage 94 by the actuator 90. However, the screw 32 determined to be defective by controlling the actuator 88 may be dropped into the defective product collection passage 92, and the other screws 32 may be dropped by the forced drop guide 96, assuming that they are non-defective. In this case, while omitting the actuator 90, the CPU 100 can control whether or not the actuator 90 is transported to the forcible dropout guide 96 and dropped into the non-defective product collection passage 94.

(6) In the above embodiment, as shown in FIG. 6, the guide plate 91 is thinly formed in the imaging unit. However, the guide plate 91 in the imaging unit may be eliminated as described below.

  As shown in FIG. 17, the depth D of the recessed part 44 is made deeper than the diameter of the main body part 32b. This is because if the depth D is small, the screw 32 may fall out of the recess 44 in a portion where the guide 91 is not present. Preferably, it may be formed deeper by 15% to 25% with respect to the diameter of the screw. That is, Q in FIG. 18B may be 15% to 25% of the screw diameter. Furthermore, it is preferable that the content be 19% to 21%.

  Since the step is provided, even if the back surface of the head is inclined (such as a countersunk screw), the contact is made at two points instead of one point, and the contact resistance is increased, so that it is difficult to drop off. Moreover, since the back surface of the head portion 32a is in contact with the upper surface of the shaft body holding disk 32, the screw having a flat head back surface has a frictional resistance during movement and is difficult to fall off.

(7) In the above embodiment, the spring 424 is provided as shown in FIG. 9 so that the vertical movement of the roller 400 is not increased. However, when the influence of the vertical movement of the roller 400 is small, the spring 424 may not be provided.

(8) In the above embodiment, the flexible member 408 is provided on the outer periphery of the roller 400. However, it may be a rigid member. In this case, a biasing force is applied to the head portion 32a by the spring 424 described above.

Claims (7)

A recess for holding and holding a shaft body having a head and a small-diameter portion having a smaller diameter than the head by the head, the recess being narrower than the head and narrower than the small-diameter portion is provided. A shaft body holding portion that moves in a predetermined direction;
In order to perform processing on the shaft body held and moved by the shaft body holding unit, a processing unit provided in the vicinity of the movement path of the shaft body holding unit,
In the processing unit, a pressing member that presses the head against the shaft body holding unit from the upper surface of the head of the shaft body held by the shaft body holding unit;
A shaft body processing apparatus. The shaft processing apparatus according to claim 1,
The shaft member processing apparatus, wherein the pressing member is a flexible roller arranged so as to rotate in contact with a head portion of the shaft body held by the shaft body holding portion from above. In the shaft processing apparatus of Claim 2,
The shaft body holding portion is configured to include a rotating disk, and the concave portion is provided on an outer peripheral portion of the disk,
The shaft body processing apparatus, wherein the processing unit includes a camera that images the shaft body from an outer peripheral side of the disk. In the shaft processing apparatus of Claim 3,
The shaft processing apparatus is characterized in that the flexible roller is formed of a member having transparency at least in a portion that abuts on the head of the shaft and is recessed. The shaft body processing apparatus according to claim 3 or 4,
The shaft processing apparatus, wherein the processing unit includes a shielding body having an imaging slit to avoid disturbance light when the shaft held by the shaft holding unit is imaged by a camera. In the shaft processing apparatus of Claim 5,
The shaft body processing apparatus, wherein the shield is formed in a cylindrical shape, and the inside of the cylinder is made of a color or a material that reflects illumination light from a lower portion of the cylinder. A shaft body having a head and a small-diameter portion having a smaller diameter than the head is moved in a predetermined direction while being supported by being suspended from the shaft body holding portion by the head,
Pressing the head against the shaft body holding part from the upper surface of the head of the shaft body supported by hanging,
A shaft body processing method comprising: processing a shaft body whose inclination is corrected.