JP5348092B2 - Component length detection mechanism and component supply device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a component length detection mechanism for detecting the length of components while reducing costs and a component supply device. <P>SOLUTION: One aspect of the present invention relates to a component length detection mechanism 10 including an optical sensor 28 configured of one set of light emission means 34 and light reception means 36; and a supply table 22, a table stand 24 and an actuator 26 for moving a screw 32, which is characterized in that the irradiation direction of the light to be emitted by the light emission means 34 and the direction of movement of the screw 32 cross at an acute angle, and that the length of the screw 32 is detected based on the number of times the screw 32 is detected by the optical sensor 28 at least at two positions of an upstream side inspection position 44 on a path through which the screw 32 moves and a downstream side inspection position 46 farther from the light emission means 34 than the upstream side inspection position 44. <P>COPYRIGHT: (C)2012,JPO&amp;INPIT

Description

  The present invention relates to a component length detection mechanism that detects the length of a component such as a screw or a bolt, and a component supply device that includes the component length detection mechanism.

  2. Description of the Related Art Conventionally, for example, in a fastening facility that automatically fastens and fixes a substrate to a workpiece with a screw, the screw is fastened while managing the magnitude of the screw tightening torque. However, even if a screw having a desired length is mistakenly supplied to the fastening facility, the screw length cannot be determined, so that the screw is fastened. Therefore, when the length of the screw is longer than the desired length, the screw may penetrate the workpiece and the tip of the screw may protrude from the bottom of the fastening facility. Moreover, when the length of a screw is shorter than desired length, there exists a possibility that a fastening part may become shallow and sufficient fastening force may not be acquired. In particular, when the screw length is shorter than the desired length, the screw length cannot be visually confirmed from the outside of the workpiece. Therefore, depending on the subsequent use environment of the work to which the substrate is fixed, the fastening of the screw cannot be maintained due to the influence of vibration or the like, and the quality of the work to which the substrate is fixed is deteriorated.

  In addition, if a screw that is not of a desired length is accidentally fastened, a step for removing the screw is required, and it is difficult to automatically return in the fastening facility unless the screw is removed. .

  Although it is conceivable to measure the length of the screw using a system that measures the distance by an image sensor or a laser sensor, the cost increases because it is complicated and expensive. In particular, in order to determine whether the screw length is within the allowable range that is recognized as the regular length, at least the sensor for inspecting the upper limit side of the allowable range and the lower limit side of the allowable range are inspected. Two sensors, the sensor to do this, are required, which further increases the cost.

  Here, Patent Document 1 discloses a technique in which two sets of optical sensors are arranged in order to detect the length of a screw. And in the technique of patent document 1, when two sets of optical sensors detect a screw together, it detects that the length of a screw is larger than a regular length, and both sets of optical sensors do not detect a screw. If it is detected, the length of the screw is detected to be smaller than the normal length.

JP-A-55-70702

  However, in the technique of Patent Document 1, since it is necessary to provide two sets of optical sensors, the cost increases.

  Accordingly, the present invention has been made to solve the above-described problems, and provides a component length detection mechanism and a component supply device that can detect the length of a component while reducing cost. Let it be an issue.

  One aspect of the present invention made to solve the above-described problems includes an optical sensor including a pair of light emitting means and a light receiving means, and a moving means for moving a component, and the light emitting means emits the light sensor. The irradiation direction of light and the moving direction of the component intersect at an acute angle, and at least two of the first inspection position and the second inspection position located farther from the light emitting means than the first inspection position in the path along which the component moves. A component length detection mechanism that detects the length of the component based on the number of times the optical sensor detects the component at a location.

  According to this aspect, the length of the component is determined based on the detection results of the photosensor at at least two locations in the path along which the component moves by using a photosensor composed of only one set of light emitting means and light receiving means. Since it detects, the number of optical sensors can be minimized and the cost can be reduced.

  In the above aspect, when the component has a regular length, the component blocks the light at the first inspection position, and the component does not block the light at the second inspection position. It is preferable that the light irradiation direction is set.

  According to this aspect, when the component is not a regular length, the light emitted from the light emitting means of the optical sensor is not blocked at the first inspection position, or the light emitting means of the optical sensor is emitted at the second inspection position. Block the light. Therefore, the number of times the optical sensor detects the component differs depending on whether the component is not a regular length or if the component is a regular length. Therefore, it is possible to detect the length of the component with a simple structure while reducing the cost.

  In the above aspect, the moving means includes a holding means for holding the component and a holding base on which the holding means is mounted, and the holding base is provided with a groove through which light emitted from the light emitting means can pass. It is preferable that the groove intersects a path along which the component moves at at least two locations of the first inspection position and the second inspection position.

  According to this aspect, it is possible to reliably obtain the detection results of the optical sensor at at least two locations of the first inspection position and the second inspection position, and to detect the length of the component based on the detection result. .

  In the above aspect, it is preferable that the moving means moves the part on a circumferential path.

  In the said aspect, it is preferable that the said moving means moves the said components on a linear path | route.

  Another aspect made in order to solve the above problems is based on a component receiving unit that receives a component, a component length detection unit that detects the length of the component, and a detection result of the component length detection unit. A component supply unit that supplies the component to an external device, and a component discard unit that discards the component that was not supplied to the external device by the component supply unit, and the component length detection unit, A first inspection position in a path along which the component moves such that an irradiation direction of light emitted by the light emitting unit of a photosensor comprising a pair of light emitting unit and light receiving unit intersects the moving direction of the component at an acute angle; The length of the component is detected based on the number of times the optical sensor detects the component at at least two positions of the second inspection position that are farther from the light emitting means than the first inspection position, and the component The receiving part, the component length detection part, and the That a goods supply and the component discarding section is provided on a path which the component is moved, a component supply device according to claim.

  According to this aspect, since the length of the component can be detected by the optical sensor composed of a pair of light emitting means and light receiving means, the cost can be reduced. In addition, it is possible to receive parts, detect the length of parts, and supply parts to external devices or discard parts based on the detection results on a series of routes, reducing costs with a simple structure. Can be achieved.

  According to the component length detection mechanism and the component supply device of the present invention, it is possible to detect the length of a component while reducing the cost.

1 is a plan view of a component supply apparatus having a component length detection mechanism according to a first embodiment. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is explanatory drawing about the direction of the light irradiated between the light emission means and light reception means in an optical sensor. It is the flowchart figure explaining the detection method of the length of a screw. FIG. 6 is a diagram showing Example 2. It is explanatory drawing about the direction of the light irradiated between the light emission means and light reception means in an optical sensor. It is a figure which shows the example of application to the equipment which fastens a board | substrate and a workpiece | work.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[Example 1]
First, the structure of the component supply apparatus 1 which has the component length detection mechanism 10 of Example 1 is demonstrated. 1 to 3 are schematic views of a component supply apparatus 1 having a component length detection mechanism 10 according to the first embodiment, FIG. 1 is a plan view, and FIG. 2 is a cross-sectional view taken along line AA in FIG. 3 is a cross-sectional view taken along the line BB of FIG.

  As illustrated in FIGS. 1 to 3, the component supply apparatus 1 according to the first embodiment includes a linear feeder 20, a supply table 22, a table base 24, an actuator 26, an optical sensor 28, and the like. The supply table 22, the table 24, the actuator 26, the optical sensor 28, and the like constitute the component length detection mechanism 10. The component length detection mechanism 10 can detect the length of various components including a rod-shaped portion such as a screw, bolt, rivet, or pin. In the following description, as an example of a component, The screw 32 will be described as an example. In addition, each apparatus which comprises the component supply apparatus 1 is controlled by the control means not shown.

  The rectilinear feeder 20 is means for conveying the screw 32 and supplying it to the supply table 22. In this embodiment, a linear feeder that conveys the screw 32 in the linear direction is used, but a circular feeder that conveys the screw 32 in the circumferential direction may be used, and the conveyance type of the screw 32 is not particularly limited. .

  The supply table 22 is formed in a disc shape and is a means for moving on a circumferential path while holding the screw 32. The supply table 22 is mounted on the table base 24 in a rotatable state. Further, as shown in FIG. 3, an actuator 26 is connected to the supply table 22, and the supply table 22 is rotated by the actuator 26. The method of holding the screw 32 by the supply table 22 is not particularly limited. For example, the method of holding the screw 32 by magnetic adsorption or the insertion of the screw 32 into a groove (not shown) provided on the outer peripheral portion of the supply table 22. A method of holding them can be considered.

  As shown in FIG. 3, a groove 38 is provided in the table base 24. The groove 38 is provided so as to penetrate between the surface 40 on the light emitting means 34 side and the surface 42 on the light receiving means 36 side of the optical sensor 28 in the table base 24. Thereby, the light emitted from the light emitting means 34 of the optical sensor 28 can pass through the table 24 and reach the light receiving means 36. Further, the groove 38 intersects a path along which the screw 32 moves at two locations, an upstream inspection position 44 (see FIG. 1) and a downstream inspection position 46 (see FIG. 1). The supply table 22, the table 24, and the actuator 26 are examples of constituent members of the “moving means” of the present invention. The supply table 22 is an example of the “holding means” in the present invention, and the table base 24 is an example of the “holding base” in the present invention.

  The optical sensor 28 includes a light emitting means 34 and a light receiving means 36. In this embodiment, only one set of the light emitting means 34 and the light receiving means 36 is provided. The light emitting means 34 and the light receiving means 36 are provided with the supply table 22 and the table 24 interposed therebetween, and an irradiation path and a supply table of light irradiated from the light emitting means 34 through the groove 38 to the light receiving means 36. The movement path of the screw 32 by the rotation of 22 intersects at two places, the upstream inspection position 44 and the downstream inspection position 46. In the present embodiment, the downstream inspection position 46 is located farther from the light emitting means 34 than the upstream inspection position 44. The upstream inspection position 44 is an example of the “first inspection position” in the present invention, and the downstream inspection position 46 is an example of the “second inspection position” in the present invention.

  Further, as shown in FIG. 2, the light irradiation direction between the light emitting means 34 and the light receiving means 36 in the length direction of the screw 32 (vertical direction in FIG. 2) is relative to the moving direction of the screw 32. The light emitting means 34 and the light receiving means 36 are arranged so as to intersect at an angle θ. In the present embodiment, when the screw 32 has a regular length, the screw 32 blocks light emitted from the light emitting means 34 at the upstream inspection position 44, while the screw 32 emits light at the downstream inspection position 46. The irradiation direction of the light emitted from the light emitting means 34 is set so as not to block the light emitted from the means 34. The positional relationship between the light emitting unit 34 and the light receiving unit 36 may be opposite to the positional relationship shown in FIGS.

  Here, a method for setting the angle θ will be described. FIG. 4 is an explanatory diagram of a method for setting the angle θ. Here, as shown in FIG. 4, the length of the reference screw (reference length screw 32) is set to L (for example, L = 8 mm), and the optical sensor 28 when the screw 32 reaches the downstream inspection position 46. The distance between the light receiving means 36 and the screw 32 is X. The width of the screw 32 is Y, and the distance between the upstream inspection position 44 and the downstream inspection position 46 is Z.

  In addition, the distance between the tip of the reference screw and the light receiving means 36 of the optical sensor 28 in the length direction of the screw 32 is h, the length that is desired to detect a screw longer than the reference screw is α, and the screw that is shorter than the reference screw is desired to be detected. Let the length be β. That is, the allowable range for the screw 32 to be a regular length is set to (L−β) or more and (L + α) or less.

このように、角度θを鋭角に設定し、さらにｔａｎθの範囲を設定する。
以上が、角度θの設定方法について説明である。 Therefore, in this embodiment, the angle θ is set so that the condition of the following mathematical formula is satisfied.

As described above, the angle θ is set to an acute angle, and the range of tan θ is set.
The above is the description of the method for setting the angle θ.

Further, as shown in FIG. 1, the component supply device 1 can be divided into a part receiving part 48, a part length detection part 50, a part supply part 52, and a part discarding part 54 for each region. The component receiving unit 48, the component length detecting unit 50, the component supplying unit 52, and the component discarding unit 54 are provided on a path along which the screw 32 moves.
The component receiving portion 48 is a portion where the screw 32 is received from the linear feeder 20 to the supply table 22. The component length detection unit 50 is a part that detects the length of the screw 32 by the component length detection mechanism 10 at the upstream inspection position 44 and the downstream inspection position 46.

  Further, the position after the supply table 22 rotates and the screw 32 passes the upstream inspection position 44 and the downstream inspection position 46, specifically, the position of the component receiving portion 48 is 180 in the rotational direction of the supply table 22. The moved position is referred to as a component supply unit 52. Based on the detection result of the length of the screw 32 in the component length detection unit 50, the component supply unit 52 transfers to a driver unit (for example, a screw fastening robot 82 (see FIG. 8) described later). This is a portion to which the screw 32 is supplied from the supply table 22.

  Further, a position where the supply table 22 rotates and passes through the component supply unit 52, specifically, a position moved by 90 ° from the component supply unit 52 in the rotation direction of the supply table 22 is defined as a component discarding unit 54. In the component discarding unit 54, a discard hole 56 is provided in the table base 22. The component discarding unit 54 is a unit that discards the screw 32 that has not been supplied to the driver unit by the component supplying unit 52 from the discarding hole 56. The component discarding unit 54 is not limited to this position, and may be any position after the component table 52 passes through the component supply unit 52 in the rotation direction of the supply table 22 and reaches the component receiving unit 48.

Next, a method for detecting the length of the screw 32 will be described.
FIG. 5 is a flowchart illustrating a method for detecting the length of the screw 32. As shown in FIG. 5, first, the supply table 22 receives the screw 32 from the linear feeder 20 in the component receiving unit 48 (step S <b> 1), and the supply table 22 holds the screw 32.

  Next, the supply table 22 is rotated 180 degrees (step S2). As a result, the screw 32 moves from the component receiving unit 48 to the component supply unit 52. At this time, the screw 32 passes through the upstream inspection position 44 and the downstream inspection position 46 while the screw 32 moves from the component receiving unit 48 to the component supply unit 52. At this time, in the component receiving unit 48, a new screw 32 is supplied from the linear feeder 20 to the supply table 22.

Then, based on the number of times the optical sensor 28 detects the screw 32 when the screw 32 passes through the upstream inspection position 44 and the downstream inspection position 46, the component length determination unit ( (Not shown), the length of the screw 32 is detected as follows.
First, it is determined whether or not the total number of times that the optical sensor 28 has detected the screw 32 is one (step S3).
If it is determined that the number of times the optical sensor 28 has detected the screw 32 is one in total, the length of the screw 32 is within the allowable range of the normal length and is detected as “normal”. (Step S4). Then, the supply table 22 is temporarily stopped in a state where the screw 32 is positioned in the component supply unit 52 (step S5), and the screw 32 is supplied from the supply table 22 to a driver unit (not shown) (step S6).

  On the other hand, if it is determined that the total number of times the optical sensor 28 has detected the screw 32 is not 1, the length of the screw 32 is detected as “NG” because it is not within the allowable range of the normal length. (Step S7). Then, it is determined whether or not the total number of times that the optical sensor 28 has detected the screw 32 is zero (step S8). If it is determined that the total number of times the optical sensor 28 has detected the screw 32 is zero, it is detected that the screw 32 is shorter than the regular length (step S9). Then, the supply table 22 is rotated without being temporarily stopped in a state where the screw 32 is positioned in the component supply unit 52, and the screw 32 is discarded from the discard hole 56 provided in the component discarding unit 54 (step S10). At this time, the optical sensor 28 has already detected the length of the next screw 32.

  In step S8, when it is determined that the number of times the optical sensor 28 has detected the screw 32 is not 0, it is determined that the total number of times the optical sensor 28 has detected the screw 32 is 2 ( In step S11), it is detected that the screw 32 is longer than the regular length (step S12). In the same manner as described above, the screw 32 is discarded from the discard hole 56 provided in the component discarding unit 54 (step S10).

  Thus, when the supply table 22 receives a screw 32 that is not a normal length from the linear feeder 20, the screw 32 that is not a normal length is discarded by the component discarding unit 54. 32 is not accidentally supplied to the driver unit (external device). Therefore, it is possible to prevent a problem such as a screw 32 that is not a regular length being erroneously fastened in the driver unit of the supply destination.

  Further, when the length of the screw 32 is determined as “NG”, the screw 32 is discarded by the component discarding unit 54 without stopping the rotation of the supply table 22, so that the screw 32 having the proper length is replaced. It can be efficiently supplied to the driver unit.

  In addition, although it has been described that the length of the component is detected based on the detection results of the optical sensor 28 at two places on the path along which the screw 32 moves, the optical sensor at three or more places along the path along which the screw 32 moves. The length of the part may be detected based on the 28 detection results.

Next, the effect of Example 1 is demonstrated.
As described above, according to the component length detection mechanism 10 of the first embodiment, at least 2 in the path along which the screw 32 moves using the optical sensor 28 including only one set of the light emitting means 34 and the light receiving means 36. The length of the part is detected based on the detection result of the optical sensor 28 at the location. Therefore, the number of photosensors 28 can be minimized and the cost can be reduced.

  Further, when the screw 32 has a regular length, the screw 32 blocks the light of the optical sensor 28 at the upstream inspection position 44, and the screw 32 does not block the light of the optical sensor 28 at the downstream inspection position 46. In addition, since the light irradiation direction of the optical sensor 28 is set, when the screw 32 is not a regular length, the light emitted from the light emitting means 34 of the optical sensor 28 is not blocked at the upstream inspection position 44. Alternatively, the light emitted from the light emitting means 34 of the optical sensor 28 is blocked at the downstream inspection position 46. Therefore, the number of times the optical sensor 28 detects the screw 32 is different between the case where the screw 32 is not a regular length and the case where the screw 32 is a regular length. Accordingly, it is possible to detect the length of the screw 32 while reducing the cost with a simple structure.

  In addition, a supply table 22 and a table base 24 are provided, and the table base 24 is provided with a groove 38 through which light emitted from the light emitting means 34 of the optical sensor 28 can pass. The groove 38 has an upstream inspection position 44 and a downstream inspection position. 46, the detection result of the optical sensor 28 at at least two locations of the upstream inspection position 44 and the downstream inspection position 46 can be obtained with certainty. Based on the above, the length of the screw 32 can be detected.

  Further, since the component receiving unit 48, the component length detecting unit 50, the component supplying unit 52, and the component discarding unit 54 are provided on the path along which the screw 32 moves, the receiving of the screw 32 and the length of the screw 32 are provided. And the supply of the screw 32 to the driver unit based on the detection result or the discarding of the screw 32 by the component discarding unit 54 can be performed on a series of paths, and the cost can be reduced with a simple structure. Can do.

[Example 2]
Next, the component supply apparatus 2 having the component length detection mechanism 12 according to the second embodiment will be described. In the following description, the same components as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and different points are mainly described. First, the configuration of the second embodiment will be described. FIG. 6 is a diagram illustrating a configuration of the second embodiment, and FIG. 7 is a diagram illustrating an irradiation direction of light irradiated between the light emitting unit 34 and the light receiving unit 36. As shown in FIGS. 6 and 7, the second embodiment is different from the first embodiment in that the screw 32 is moved along a linear path.

  As shown in FIG. 6, a slide mechanism 60 is provided in the second embodiment. As the slide mechanism 60, for example, a linear motor or a three-position cylinder can be considered. In addition, a component discarding unit 66 is arranged on the opposite side of the component receiving unit 62 with respect to the component supply unit 64 to be supplied to the driver unit.

  The light emitting means 34 and the light receiving means 36 of the optical sensor 28 are arranged so that the light emitted from the light emitting means 34 of the optical sensor 28 is irradiated in parallel to the direction in which the screw 32 moves by the slide mechanism 60. . Similarly to FIG. 4 described above, the light emitting means of the optical sensor 28 is arranged such that the direction of light irradiated between the light emitting means 34 and the light receiving means 36 intersects the moving direction of the screw 32 at an angle θ. 34 and the light receiving means 36 are arranged. Then, when the screw 32 has a regular length, as shown in FIG. 7, while preventing the screw 32 from blocking the light emitted from the light emitting means 34 of the optical sensor 28 in the component receiving unit 62, The screw 32 is set so as to block the light emitted from the light emitting means 34 of the optical sensor 28 in the component supply unit 64. The positions of the light emitting means 34 and the light receiving means 36 may be opposite to the positional relationship shown in FIGS.

Next, a method for detecting the length of the screw 32 in the second embodiment will be described.
First, in the component receiving unit 62, the holding unit 68 of the slide mechanism 60 receives the screw 32 from the rectilinear feeder 20.
Next, the screw 32 held by the holding means 68 is moved from the position of the component receiving unit 62 to the position of the component supply unit 64. At this time, based on the number of times the optical sensor 28 detects the screw 32 at two locations of the component receiving unit 62 and the component supply unit 64, according to the flowchart of the length detection method of the screw 32 shown in FIG. , Whether the length of the screw 32 is “normal” or “NG” is detected.
When it is detected that the length of the screw 32 is “normal”, the holding unit 68 is stopped at the position of the component supply unit 64 and the screw 32 is supplied from the holding unit 68 to the driver unit. On the other hand, when the length of the screw 32 is detected as “NG”, the holding means 68 is moved to the position of the component discarding section 66 without stopping at the position of the component supply section 64, and the screw 32 is moved to the discard hole. Discard from 69.

  According to the second embodiment, in addition to the effects of the first embodiment, since the relatively inexpensive slide mechanism 60 is used as the moving means for the screw 32, the cost can be further reduced.

[Example of application to fastening equipment]
Next, an example of equipment to which the component supply devices 1 and 2 of the first and second embodiments are applied will be described.
FIG. 8 is a diagram illustrating an application example to the fastening facility 74 that fastens the substrate 70 and the work 72. As an example, FIG. 8 shows an application example of the component supply apparatus 1 having the component length detection mechanism 10 to the fastening facility 74.

  As shown in FIG. 8, the substrate setting robot 78 receives the substrate 70 transferred by the transfer unit 76, and the substrate setting robot 78 sets the substrate 70 on the work 72 transferred by the transfer unit 80. On the other hand, the screw fastening robot 82, which is an example of the driver unit, receives the screw 32 of a normal length supplied from the component supply device 1 having the component length detection mechanism 10 by air adsorption, and receives this. The board 70 and the work 72 are fastened with the screws 32.

  Thereby, the board | substrate 70 and the workpiece | work 72 can be fastened reliably with the screw | thread 32 of regular length. Therefore, there is no possibility that the screw 32 penetrates the workpiece 72 and the tip of the screw 32 protrudes from the bottom of the fastening facility 74, and the substrate 70 and the workpiece 72 are fastened while obtaining a sufficient fastening force by the screw 32. be able to. Therefore, the quality of the work 72 to which the substrate 70 is fixed is stabilized.

  It should be noted that the above-described embodiment is merely an example and does not limit the present invention in any way, and various improvements and modifications can be made without departing from the scope of the invention.

DESCRIPTION OF SYMBOLS 1 Component supply apparatus 2 Component supply apparatus 10 Component length detection mechanism 12 Component length detection mechanism 20 Linear feeder 22 Supply table 24 Table stand 26 Actuator 28 Optical sensor 32 Screw 34 Light emission means 36 Light reception means 38 Groove 44 Upstream inspection position 46 Downstream inspection position 48 Component receiving unit 50 Component length detecting unit 52 Component supplying unit 54 Component discarding unit 56 Discarding hole 60 Slide mechanism 62 Component receiving unit 64 Component supplying unit 66 Component discarding unit 68 Holding means 69 Discarding hole

Claims (6)

An optical sensor comprising a set of light emitting means and light receiving means;
Moving means for moving the parts,
The irradiation direction of the light emitted by the light emitting means and the moving direction of the component intersect at an acute angle,
Based on the number of times the optical sensor detects the component at at least two locations of a first inspection position in a path along which the component moves and a second inspection position farther from the light emitting means than the first inspection position. Detecting the length of the part
A part length detection mechanism. In the component length detection mechanism of claim 1,
The irradiation direction of the light is such that the component blocks the light at the first inspection position and the component does not block the light at the second inspection position when the component is a regular length. That it is configured,
A part length detection mechanism. The component length detection mechanism according to claim 1 or 2,
The moving means includes a holding means for holding the component and a holding base on which the holding means is mounted,
The holding table is provided with a groove through which the light emitted by the light emitting means can pass, and the groove intersects a path along which the component moves at at least two locations of the first inspection position and the second inspection position.
A part length detection mechanism. In the component length detection mechanism according to any one of claims 1 to 3,
The moving means moves the component on a circumferential path;
A part length detection mechanism. In the component length detection mechanism according to any one of claims 1 to 3,
The moving means moves the part on a linear path;
A part length detection mechanism. A parts receiving part for receiving parts;
A component length detector for detecting the length of the component;
A component supply unit that supplies the component to an external device based on the detection result of the component length detection unit;
A component discarding unit that discards the component that was not supplied to the external device in the component supply unit;
In the component length detection unit, the component moves so that the irradiation direction of the light emitted by the light emitting unit of the optical sensor composed of a pair of light emitting unit and light receiving unit intersects the moving direction of the component at an acute angle. Of the component based on the number of times the optical sensor detects the component at at least two positions of the first inspection position and the second inspection position farther from the light emitting means than the first inspection position. Detect the length
The component receiving unit, the component length detecting unit, the component supplying unit, and the component discarding unit are provided on a path along which the component moves;
A component supply device characterized by the above.

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