JP2014183163A - Nozzle inspection apparatus and nozzle maintenance system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a nozzle inspection apparatus and a nozzle maintenance system capable of increasing inspection accuracy by reducing variation in inspection results while reducing the inspection time.SOLUTION: A mark imaging camera 12 takes an image of an identification mark 2M given to a nozzle 2 from an end side opposite to the side of a component suction end 2c of the nozzle 2 positioned at an inspection position to acquire a piece of individual identification information of the nozzle 2. A nozzle imaging camera 13 takes an image of the nozzle 2 from the side of the component suction end 2c of the nozzle 2 positioned at the inspection position to acquire a piece of status information of the nozzle 2. The nozzle inspection apparatus processes the individual identification information of the nozzle 2 acquired by the mark imaging camera 12 and the status information of the nozzle 2 acquired by the nozzle imaging camera 13 while associating with each other. The mark imaging camera 12 and the nozzle imaging camera 13 are disposed at the positions opposing to each other in an axial direction being interposed by the nozzle 2 positioned at the inspection position.

Description

  The present invention relates to a nozzle inspection apparatus that inspects nozzles used in a component mounting apparatus, and a nozzle maintenance system that includes the nozzle inspection apparatus.

  The component mounting apparatus vacuum-sucks the component with a nozzle and mounts it on the substrate. The nozzle may cause clogging and the like because dust is sucked together when the parts are sucked, and if left unattended, it will lead to mistakes in picking up the parts and so on, so it is periodically cleaned. The nozzle is usually automatically cleaned by a nozzle cleaning device (for example, Patent Document 1), and thereafter, it is inspected whether the cleaning by the nozzle cleaning device is sufficient.

JP 2010-269214 A

  However, since the inspection after the nozzle cleaning is performed manually (visually) by the operator, the inspection operation requires a lot of time and the inspection accuracy is insufficient, and the inspection result varies depending on the skill level of the operator. Could occur. When the inspection accuracy varies, there is a high possibility that a nozzle that is not sufficiently cleaned will be used in the component mounting apparatus, which may reduce the mounting accuracy.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a nozzle inspection apparatus and a nozzle maintenance system that can improve inspection accuracy by reducing variations in inspection results and can also reduce inspection time.

  The nozzle inspection apparatus according to claim 1 is a nozzle inspection apparatus that inspects a nozzle used in a component mounting apparatus, and the nozzle inspection apparatus is located at an inspection position from an end side opposite to a component suction end. Mark imaging means for imaging an identification mark provided on the nozzle to acquire individual identification information of the nozzle, and imaging the nozzle from the component suction end side of the nozzle located at the inspection position. Nozzle imaging means for acquiring status information, and information processing means for processing the nozzle individual identification information acquired by the mark imaging means and the nozzle status information acquired by the nozzle imaging means in association with each other. The mark imaging means and the nozzle imaging means are provided at positions facing each other with the nozzle positioned at the inspection position interposed therebetween.

  The nozzle inspection apparatus according to claim 2 is the nozzle inspection apparatus according to claim 1, comprising a mark illumination unit that illuminates the identification mark of the nozzle located at the inspection position, and the mark imaging unit. Images the identification mark in a state in which the identification mark is illuminated by the mark illumination means, and the nozzle imaging means takes the nozzle in a state in which the internal pipe line of the nozzle is transmitted and illuminated by the mark illumination means. Take an image.

  A nozzle maintenance system according to claim 3 is provided with a nozzle cleaning device for cleaning nozzles, a nozzle inspection device according to claim 1 or 2, and a nozzle holder for holding the nozzles, wherein the nozzle holder includes the nozzle cleaning device and Mountable in the nozzle inspection device, the nozzle cleaning device cleans the nozzle held by the nozzle holder, and the nozzle inspection device inspects the nozzle received from the nozzle cleaning device together with the nozzle holder. .

  In the present invention, nozzle inspection is automated by associating and processing the nozzle individual identification information obtained by imaging the identification mark and the nozzle state information obtained by imaging the nozzle. Thus, compared with the case where an operator inspects manually (visually), the variation in the inspection results is reduced, and the inspection accuracy can be improved. Further, in addition to the above automation, by providing a mark imaging means for imaging the nozzle identification mark and a nozzle imaging means for imaging the nozzle at positions facing each other across the nozzle located at the inspection position, the individual identification information of the nozzle Since the nozzle state information can be acquired simultaneously, the total time required for imaging the identification mark and the nozzle can be shortened, and the inspection time can be shortened.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a simplified configuration diagram of a nozzle maintenance system and a component mounting apparatus including a nozzle inspection apparatus according to an embodiment of the present invention. The front view of the nozzle test | inspection apparatus in one embodiment of this invention The top view of the nozzle test | inspection apparatus in one embodiment of this invention (A) (b) The perspective view which shows the nozzle holder used with the nozzle test | inspection apparatus in one embodiment of this invention with a nozzle The block diagram which shows the control system of the nozzle inspection apparatus in one embodiment of this invention The partial expanded front view of the nozzle test | inspection apparatus in one embodiment of this invention (A) (b) The figure which shows an example of the captured image obtained by the nozzle imaging camera with which the nozzle inspection apparatus in one embodiment of this invention is provided The flowchart which shows the execution procedure of the nozzle test | inspection work which the nozzle test | inspection apparatus in one embodiment of this invention performs

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a nozzle inspection apparatus 1 according to the present invention, a nozzle maintenance system NMS including the nozzle inspection apparatus 1, and a component mounting system BJS. The nozzle maintenance system NMS includes a nozzle inspection device 1 and a nozzle cleaning device 1a, and the component mounting system BJS includes a nozzle maintenance system NMS and a component mounting device 1b. The component mounting apparatus 1b is an apparatus that mounts a component on a substrate using the nozzle 2, and the nozzle cleaning apparatus 1a is an apparatus that cleans the nozzle 2 removed from the component mounting apparatus 1b. The nozzle inspection apparatus 1 performs inspection of the nozzles 2 used in the component mounting apparatus 1b after being cleaned in the nozzle cleaning apparatus 1a.

  2 and 3, the nozzle inspection apparatus 1 can inspect the nozzle 2 while being held in the nozzle holder 3 that is a holding means of the nozzle 2, and the nozzle holder mounting portion 11, A mark imaging camera 12, a nozzle imaging camera 13, a nozzle mounting member 14, and a nozzle moving mechanism 15 are provided.

  4A and 4B show the nozzle holder 3 used in the nozzle inspection apparatus 1 together with the nozzle 2. The nozzle 2 has a base portion 2a attached to the component mounting apparatus 1b, and a nozzle main portion 2b extending downward with the base portion 2a attached to the component mounting apparatus 1b. The lower end of the nozzle main portion 2b is a suction target. It becomes the component adsorption | suction end 2c which contacts components. A disc-shaped reflector 2d is formed between the base portion 2a and the nozzle main portion 2b. An identification mark 2M composed of a two-dimensional code mark in which individual information of the nozzle 2 is recorded is provided on the upper surface (surface on the base 2a side) of the reflecting plate 2d.

  4A and 4B, the nozzle holder 3 includes a block-shaped fixed portion 3b and a movable plate 3c provided above the fixed portion 3b in a frame-shaped casing 3a. The fixed portion 3b is provided with a plurality of nozzle insertion holes 3h extending in the vertical direction (thickness direction of the casing 3a), and the movable plate 3c is used for exposing the nozzle insertion holes 3h of the fixed portion 3b. It has a plurality of groove-shaped openings 3d. The movable plate 3c can slide in a horizontal direction (arrow A shown in FIG. 4A) at a position separated from the upper surface of the fixed portion 3b by a predetermined distance (a distance slightly larger than the thickness of the reflecting plate 2d of the nozzle 2). It is like that.

  The nozzle 2 extends so that the nozzle main portion 2b penetrates the groove-shaped opening 3d of the movable plate 3c and the nozzle insertion hole 3h of the fixed portion 3b downward from above, and the reflecting plate 2d contacts the upper surface of the fixed portion 3b. Are installed in the nozzle holder 3 (FIG. 4A). When the movable plate 3c is slid with respect to the casing 3a from this state (arrow A1 shown in FIG. 4 (b)), the nozzle pressing protrusion provided to protrude inward of the groove-shaped opening 3d of the movable plate 3c. 3e is located above the reflecting plate 2d, and the reflecting plate 2d is sandwiched between the nozzle pressing projection 3e and the fixing portion 3b, whereby the nozzle 2 is held by the nozzle holder 3.

  Inside the housing 10 is a Y-axis table 16a extending in the Y-axis direction (the longitudinal direction of the housing 10; the direction perpendicular to the paper surface in FIG. 2, the vertical direction of the paper surface in FIG. 3); The X axis table 16b and the X axis table 16b are provided so as to be movable along the Y axis table 16a. A nozzle holder moving mechanism 16 comprising a moving stage 16c provided is provided. The nozzle holder mounting portion 11 is provided on the moving stage 16c of the nozzle holder moving mechanism 16, and the movement of the X-axis table 16b in the Y-axis direction with respect to the Y-axis table 16a and the X-axis direction of the moving stage 16c with respect to the X-axis table 16b. It can move in the horizontal plane by combining with movement to. A nozzle holder 3 holding the nozzle 2 is attached to the nozzle holder attaching portion 11 in a horizontal posture.

  2 and 3, the mark imaging camera 12 is mounted in the casing 10 with the imaging field of view facing downward, and the nozzle imaging camera 13 is installed in the casing 10 with the imaging field of view facing upward. It is attached.

  The nozzle mounting member 14 is composed of a flat plate-like member extending in the Y-axis direction as a whole, and can move in the Y-axis direction on a slide base 17 provided in the housing 10 so as to extend in the Y-axis direction. The nozzle mounting member 14 has an NG nozzle mounting portion 14A composed of a plurality of nozzle mounting holes 14h arranged in the Y-axis direction, and adjacent to the NG nozzle mounting portion 14A (on the left side of the paper in FIGS. 2 and 3). Is provided with an OK nozzle mounting portion 14B composed of a plurality of nozzle mounting holes 14h arranged in the Y-axis direction. The NG nozzle that is the unsuitable state of the nozzle 2 is placed in the nozzle placement hole 14h of the NG nozzle placement portion 14A, and is not unusable in the nozzle placement hole 14h of the OK nozzle placement portion 14B. An OK nozzle which is a suitable nozzle 2 is placed. Here, “the nozzle 2 in an unsuitable state” means the nozzle 2 in a state where there is a risk of causing a malfunction such as a component suction mistake when used in the component mounting apparatus 1b. “Suitable” nozzle 2 ”refers to the nozzle 2 in a state where there is no risk of occurrence of the above-described problems even when used in the component mounting apparatus 1b.

  2 and 3, the nozzle moving mechanism 15 includes a fixed table 15a provided extending in the X-axis direction in an upper region in the housing 10, a moving body 15b provided movably along the fixed table 15a, The movable body 15b includes a head portion 15c provided to be movable up and down. The head portion 15c is provided with a pair of openable and closable nozzle gripping fingers 15d. The nozzle gripping finger 15d is moved by the moving operation of the moving body 15b relative to the fixed table 15a in the X-axis direction and the vertical movement of the head portion 15c relative to the moving body 15b, and the gripping finger driving portion 15e provided in the head portion 15c. As a result, the nozzle 2 as a gripping object is gripped by opening and closing the nozzle gripping finger 15d.

  In FIG. 5, the movement operation of the nozzle holder mounting portion 11 in the front-rear direction is performed by controlling the operation of the nozzle holder moving mechanism 16 by the control device 20 (see also FIG. 1) provided in the nozzle inspection device 1. The movement operation of the member 14 in the Y-axis direction is performed by the control device 20 controlling the operation of the nozzle mounting portion drive motor 17m (see also FIG. 3) provided on the slide base 17. Further, the movement of the nozzle 2 by the nozzle moving mechanism 15 is performed by the control device 20 by controlling the operation of the nozzle moving mechanism 15 (specifically, the movement of the head portion 15c and the gripping operation of the nozzle 2 by the nozzle gripping finger 15d). (Operation control) is performed.

  In FIG. 6, the imaging optical axis L <b> 1 of the mark imaging camera 12 faces downward, and is arranged at a position surrounding the mark imaging camera 12 in the horizontal direction so as to be centered on the imaging optical axis L <b> 1 of the mark imaging camera 12. An annular mark illumination light source 12L is provided. On the other hand, the imaging optical axis L2 of the nozzle imaging camera 13 faces upward, and the imaging optical axis L1 of the mark imaging camera 12 and the imaging optical axis L2 of the nozzle imaging camera 13 are from the central axis of the nozzle 2 to the identification mark 2M. They are separated by a distance S corresponding to the distance to the center position.

  A half mirror 13HM is provided on the imaging optical axis L2 of the nozzle imaging camera 13, and a suction end illumination light source 13L is provided on the side of the half mirror 13HM. The illumination light emitted from the suction end illumination light source 13L is incident on the semipermeable membrane 13F of the half mirror 13HM, and the illumination light reflected by the semipermeable membrane 13F of the half mirror 13HM is along the imaging optical axis L2 of the nozzle imaging camera 13. Go up.

  The nozzle 2 to be inspected is positioned at the inspection position by the movement of the nozzle holder 3 by the nozzle holder moving mechanism 16. Here, as shown in FIG. 6, the “inspection position” means that the center axis of the nozzle 2 with the component suction end 2 c directed downward coincides with the imaging optical axis L <b> 2 of the nozzle imaging camera 13 and the reflection of the nozzle 2. The identification mark 2M provided on the plate 2d is a position located on the imaging optical axis L1 of the mark imaging camera 12. That is, in the present embodiment, the mark imaging camera 12 and the nozzle imaging camera 13 are provided at positions facing each other with the nozzle 2 positioned at the inspection position sandwiched in the axial direction.

  As shown in FIG. 6, each imaging optical axis does not necessarily coincide with the center of the imaging target, and each imaging target is identified in each field of view of the mark imaging camera 12 and the nozzle imaging camera 13. It is sufficient that at least the mark 2M and the component suction end 2c of the nozzle 2 are included and can be recognized by the respective cameras. That is, the “inspection position” is not limited to the position shown in FIG. 6, and the nozzle 2 is positioned at a position where the mark imaging camera 12 and the nozzle imaging camera 13 can recognize the identification mark 2M and the component suction end 2c. The stop position of the nozzle 2, the position and orientation of the mark imaging camera 12, and the position and orientation of the nozzle imaging camera 13 may be appropriately adjusted.

  Control of the illumination operation of each of the mark illumination light source 12L and the suction end illumination light source 13L and the imaging operation of each of the mark imaging camera 12 and the nozzle imaging camera 13 are performed by the control device 20 (FIG. 5). Further, the image data obtained by the imaging operation of the mark imaging camera 12 and the image data obtained by the imaging operation of the nozzle imaging camera 13 are respectively sent to the control device 20 and subjected to image processing in the image processing unit 20a of the control device 20. (FIG. 5).

  As illustrated in FIG. 6, the control device 20 performs the illumination with the mark illumination light source 12 </ b> L and the illumination with the suction end illumination light source 13 </ b> L on the nozzle 2 positioned at the inspection position, The imaging operation is executed simultaneously (or almost simultaneously) with the nozzle imaging camera 13. In the above state, the identification mark 2M of the nozzle 2 positioned at the inspection position is illuminated (reflected illumination) by the mark illumination light source 12L, and the component suction end 2c of the nozzle 2 is illuminated (reflected illumination) by the suction end illumination light source 13L. Since the internal conduit 2K of the nozzle 2 is illuminated (transmitted illumination) by the mark illumination light source 12L, an image of the identification mark 2M is obtained by the imaging operation of the mark imaging camera 12, and the nozzle imaging camera 13 Through the imaging operation, an image showing the shape of the outer surface F1 of the component suction end 2c of the nozzle 2 and the shape of the inner surface F2 of the component suction end 2c of the nozzle 2 (inner wall of the internal pipe line 2K of the nozzle 2) is obtained.

  As described above, in the present embodiment, the mark imaging camera 12 is provided with the identification mark 2M provided on the nozzle 2 from the end side (the upper side here) opposite to the component suction end 2c of the nozzle 2 positioned at the inspection position. This is a mark imaging means for acquiring the individual identification information of the nozzle 2 by imaging the. Further, the nozzle imaging camera 13 images the nozzle 2 held by the nozzle holder 3 (more specifically, the nozzle from the component suction end 2c side of the nozzle 2 positioned at the inspection position while being held by the nozzle holder 3) No. 2 is acquired to acquire state information of the nozzle 2). The mark illumination light source 12L serves as mark illumination means for illuminating the identification mark 2M of the nozzle 2 positioned at the inspection position, and the mark imaging camera 12 is in a state where the identification mark 2M is illuminated by the mark illumination light source 12L. Then, the identification image 2M is imaged, and the nozzle imaging camera 13 images the nozzle 2 in a state in which the internal conduit 2K of the nozzle 2 is transmitted and illuminated by the mark illumination light source 12L.

  The control device 20 performs image processing on the obtained image data of the identification mark 2M to acquire individual identification information of the nozzle 2 positioned at the inspection position, and performs image processing on the obtained image data of the nozzle 2 to perform the inspection position. The state information of the nozzle 2 positioned at is acquired. Here, the “state information of the nozzle 2” is information on the appearance state of the nozzle 2. Specifically, the presence / absence information (chip information) of the component suction end 2 c of the nozzle 2 and the nozzle 2 are indicated. Of foreign matter W on the component suction end 2c (end surface foreign matter adhesion information) and foreign matter W adhesion information (inner surface foreign matter adhesion information) on the inner surface F2 of the nozzle 2 (the surface of the internal pipe line 2K). . The missing information of the nozzle 2 and the adhesion information of the foreign matter W on the component suction end 2c of the nozzle 2 are obtained by reading the shape of the outer surface F1 of the component suction end 2c from the image of the nozzle 2 acquired by the nozzle imaging camera 13. The foreign matter adhesion information of the nozzle 2 is obtained by reading the shape of the inner surface F2 of the nozzle 2 from the same image. FIGS. 7A and 7B are examples of images acquired by the nozzle imaging camera 13, and FIG. 7A is an example when no foreign matter W is attached to the inner surface F <b> 2 of the nozzle 2. (B) has shown the example in case the foreign material W has adhered to the inner surface F2 of the nozzle 2. FIG.

  When the control device 20 obtains the individual identification information of the nozzle 2 and the state information of the nozzle 2 as described above, both information (the individual identification information of the nozzle 2 and the nozzle 2) are obtained in the information processing unit 20b (FIG. 5). (State information) is processed in association with each other. The “processing” here is specifically a process of storing the individual identification information of the nozzle 2 and the status information of the nozzle 2 in a so-called association and storing them in the storage unit 20c (FIG. 5). Thereafter, if the identification mark 2M of the nozzle 2 is recognized, the state information of the nozzle 2 can be read out. As described above, in the present embodiment, the information processing unit 20 b of the control device 20 associates the individual identification information of the nozzle 2 acquired by the mark imaging camera 12 with the state information of the nozzle 2 acquired by the nozzle imaging camera 13. It is an information processing means for processing.

  The determination unit 20d (FIG. 5) of the control device 20 determines whether or not the nozzles 2 held in the nozzle holder 3 are in an unsuitable state based on the image (state information of the nozzles 2) acquired by the nozzle imaging camera 13. Determine whether. Here, with respect to “the chipping of the nozzle 2” and “the adhesion of the foreign matter W to the component suction end 2c”, for example, the area of the component suction end 2c of the nozzle 2 in the image obtained by the nozzle imaging camera 13 is a reference. If the nozzle 2 is excessively out of the (normal) area, it is determined that the nozzle 2 is not suitable for use (NG nozzle) because the chipping of the nozzle 2 and the adhesion of the foreign matter W are excessive. On the other hand, for “attachment of foreign matter W to the inner surface F2”, for example, the area occupied by the internal pipe line 2K of the nozzle 2 in the image acquired by the nozzle imaging camera 13 is calculated, and the calculated area is the reference When the value is below the value, it is determined that the amount of foreign matter W attached to the inner surface F2 of the nozzle 2 is excessive, and the nozzle 2 is determined to be in an unsuitable state (NG nozzle). Thus, in the present embodiment, the determination unit 20d of the control device 20 determines whether the nozzle 2 held in the nozzle holder 3 is in an unsuitable state based on the image acquired by the nozzle imaging camera 13 (NG nozzle). It is a determination means for determining whether or not.

  The above-described determination methods of “nozzle 2 chipping”, “attachment of foreign matter W to the component suction end 2 c”, and “attachment of foreign matter W to the inner surface F 2” are merely exemplary, and are not necessarily limited to this. The method is not limited, and other methods may be used as long as similar results can be obtained.

  Further, when there is a nozzle 2 determined as an NG nozzle in the determination unit 20d, the control device 20 controls the operation of the nozzle moving mechanism 15, removes the NG nozzle from the nozzle holder 3, and removes the NG nozzle placement unit 14A. Then, the nozzle 2 is removed from the OK nozzle mounting portion 14B and held in the nozzle holder 3 to perform the replacement operation. Then, when the replacement operation of the nozzle 2 is completed, the control device 20 associates the nozzle 2 determined to be an NG nozzle with the individual identification information of the nozzle 2, and the associated information (NG information) is an NG information output unit. Output from 20e (FIG. 5) to the control unit 30 (FIG. 1) of the component mounting apparatus 1b to which the nozzle 2 after inspection is mounted.

  As described above, in the present embodiment, the nozzle moving mechanism 15 removes the nozzle 2 that is determined to be unsuitable by the determination unit 20d of the control device 20 serving as the determination unit from the nozzle holder 3 as an NG nozzle, and removes the NG nozzle. In addition to being placed on the placement portion 14 </ b> A, it is a nozzle moving means for taking out the OK nozzle from the OK nozzle placement portion 14 </ b> B and holding it on the nozzle holder 3. In addition, the NG information output unit 20e of the control device 20 externally outputs NG information indicating that the nozzle 2 is in an unsuitable state (is an NG nozzle) for the nozzle 2 determined by the determination unit 20d to be in an unsuitable state. It becomes the NG information output means to output to.

  When receiving the NG information output from the NG information output unit 20e of the nozzle inspection apparatus 1, the control unit 30 of the component mounting apparatus 1b uses the received NG information as an NG information registration unit 30a (FIG. 1). ), And thereafter, based on the information registered in the registered NG information registration unit 30a, control for restricting the use of the nozzle 2 (NG nozzle) that is not suitable for use in the component mounting apparatus 1b. I do. Specifically, the “restriction” here means that the nozzle 2 (NG nozzle) is not attached to the nozzle mounting portion, or even if it is attached to the nozzle mounting portion, the nozzle 2 does not adsorb parts. Say. As described above, in the present embodiment, the control unit 30 of the component mounting apparatus 1b determines the use of the nozzle 2 that is not suitable for use in the component mounting apparatus 1b based on the NG information registered in the NG information registration unit 30a. It is a nozzle use restriction means to restrict.

  In FIG. 5, the nozzle inspection device 1 notifies the OK nozzle information when the number of OK nozzles placed on the OK nozzle placement unit 14 </ b> B becomes a predetermined number or less in the replacement operation of the nozzle 2. When the number of nozzles 2 (NG nozzles) that can be placed on the NG nozzle placement unit 14A is equal to or less than a predetermined number, an NG nozzle placement unit information notification unit 22 is notified. (Second notification means).

  The operator controls the type and number of nozzles 2 (OK nozzles) initially placed on the OK nozzle placement unit 14B by performing a predetermined operation from the input unit 23 (FIG. 5) connected to the control device 20. It can be stored in the storage unit 20c of the device 20. The control device 20 subtracts the number of nozzles 2 of each type actually moved from the OK nozzle mounting portion 14B to the nozzle holder 3 from the stored number of nozzles 2 of each type, so that the OK nozzle mounting is actually performed. The number of each type of nozzle 2 placed on the section 14B is managed. The control device 20 performs a notification operation to the OK nozzle information notification unit 21 when the number of at least one of the types of nozzles 2 mounted on the OK nozzle mounting unit 14B becomes equal to or less than a predetermined number. To do. Further, the operator performs a predetermined operation from the input unit 23 to store the number of the nozzle mounting holes 14 h of the NG nozzle mounting unit 14 </ b> A that is initially empty in the storage unit 20 c of the control device 20. Be able to. The control device 20 subtracts the number of nozzles 2 (NG nozzles) actually placed in the empty nozzle placement holes 14h of the NG nozzle placement portion 14A from the stored number of nozzle placement holes 14h. The number of nozzle mounting holes 14h that are actually empty is managed. The control device 20 causes the NG nozzle placement unit information notification unit 22 to perform a notification operation when the number of nozzle placement holes 14h that are actually empty in the NG nozzle placement unit 14A is equal to or less than a predetermined number.

  In addition to the above-described method, the number of nozzle placement holes 14h that are actually empty in the NG nozzle placement portion 14A is managed, for example, by providing a sensor or image pickup device in the nozzle moving mechanism 15 and using the sensor or image pickup device. A method of recognizing whether or not each nozzle mounting hole 14h of the NG nozzle mounting portion 14A is in an empty state may be employed. In this case, the input work itself by the worker can be made unnecessary, and an error caused by an erroneous input by the worker can be prevented, which is more preferable.

  The OK nozzle information notifying unit 21 and the NG nozzle mounting unit information notifying unit 22 are constituted by, for example, a display device, a lamp, a buzzer, and the like. The OK nozzle information notification unit 21 and the NG nozzle placement unit information notification unit 22 may be composed of different devices or the same device. In the case of the same device, different contents are notified by changing the notification style according to the notification contents.

  Next, the execution procedure of the nozzle inspection work for inspecting the nozzle 2 held by the nozzle holder 3 by the nozzle inspection apparatus 1 will be described using the flowchart of FIG. In order to perform the nozzle inspection work, first, as an advance preparation, the operator uses the input unit 23 to set the type and number of nozzles 2 (OK nozzles) initially placed on the OK nozzle placement unit 14B and the initial vacancy. The number of nozzle mounting holes 14h of the NG nozzle mounting portion 14A in the state is input (step ST1).

  When the advance preparation is completed, the operator takes out the cleaned nozzle 2 from the nozzle cleaning device 1a, and attaches it to the nozzle holder mounting portion 11 in the housing 10 while being held by the nozzle holder 3 (step ST2). Here, if the nozzle cleaning device 1a cleans the nozzle 2 while being held by the nozzle holder 3 used in the nozzle inspection device 1, the nozzle 2 is taken out from the nozzle cleaning device 1a together with the nozzle holder 3, and the nozzle It is only necessary to attach to the nozzle holder attaching part 11 of the inspection apparatus 1.

  When the operator attaches the nozzle holder 3 holding the nozzle 2 to the nozzle holder attachment portion 11, the operator inputs a predetermined operation start operation from the input portion 23 (step ST3). When the control device 20 receives a signal of an operation input performed by the operator, the control device 20 controls the operation of the nozzle holder moving mechanism 16 to move the nozzle holder 3 in a horizontal plane, and among the nozzles 2 held by the nozzle holder 3. One is located at the inspection position (step ST4).

  When the control device 20 positions the nozzle 2 held by the nozzle holder 3 at the inspection position, the control device 20 illuminates the mark illumination light source 12L and the suction end illumination light source 13L, and then performs the mark imaging camera 12 and the nozzle imaging camera 13. To perform imaging (step ST5). Thereby, individual identification information about the nozzle 2 currently located at the inspection position and state information of the nozzle 2 (part missing information and foreign matter adhesion information on the component suction end 2c, foreign matter adhesion information on the internal conduit 2K) are obtained. A process for associating both pieces of information is performed and stored in the storage unit 20c (step ST6), and the nozzle 2 held by the nozzle holder 3 is in an unsuitable state based on the image acquired by the nozzle imaging camera 13. (Whether it is an NG nozzle) or not (step ST7).

  After performing the processing of step ST4 to step ST7, the control device 20 determines whether or not the processing has been performed for all the nozzles 2 held in the nozzle holder 3 (step ST8). As a result, when all the nozzles 2 held by the nozzle holder 3 have not been processed, the process returns to step ST4, and when all the nozzles 2 held by the nozzle holder 3 have been processed. Advances to step ST9.

  In step ST9, the control device 20 determines whether there is a nozzle 2 that has been determined to be an NG nozzle in step ST7. If there is no nozzle 2 that is determined to be an NG nozzle in step ST7, the nozzle inspection operation is terminated. If there is a nozzle 2 determined as an NG nozzle in step ST7, the operation of the nozzle moving mechanism 15 is controlled to replace the nozzle 2, that is, the NG nozzle is removed from the nozzle holder 3 and the NG nozzle is mounted. While placing on the placement unit 14A, the type of OK nozzle corresponding to the type of the removed NG nozzle is taken out from the OK nozzle placement unit 14B and held in the nozzle holder 3 (step ST10).

  In the replacement operation of the nozzles 2, when at least one kind of nozzles 2 of the various kinds of OK nozzles placed on the OK nozzle placement part 14B becomes a predetermined number or less, this is the case. When the number of nozzles 2 (NG nozzles) that can be placed on the NG nozzle placement portion 14A is not more than a predetermined number, the information is reported by the information notification portion 21, and the fact is notified by the NG nozzle placement portion information notification portion 22. . For this reason, it is possible to prevent a situation in which the progress of the nozzle inspection work is stagnant due to a shortage of OK nozzles or a shortage of places where NG nozzles are placed.

  When the replacement operation of the nozzle 2 is completed, the control device 20 checks from the NG information output unit 20e the NG information obtained by associating the nozzle 2 determined as the NG nozzle in step ST7 with the individual identification information of the nozzle 2. Is output to the control unit 30 of the component mounting apparatus 1b to which the nozzle 2 is mounted (step ST11), and the inspection work is terminated.

  As described above, in the nozzle inspection apparatus 1 according to the present embodiment, the individual identification information of the nozzle 2 obtained by imaging the identification mark 2M and the state information of the nozzle 2 obtained by imaging the nozzle 2 are associated with each other. Since the inspection of the nozzle 2 is automated by processing, the variation in the inspection results is reduced and the inspection accuracy can be improved as compared with the case where the operator manually inspects (visually) as in the past. it can. In addition to the above automation, by providing a mark imaging camera 12 that images the identification mark 2M of the nozzle 2 and a nozzle imaging camera 13 that images the nozzle 2 at positions facing each other across the nozzle 2 positioned at the inspection position, Since the individual identification information of the nozzle 2 and the state information of the nozzle 2 can be acquired at the same time, the total time required to image the identification mark 2M and the nozzle 2 can be shortened, and the inspection time can be shortened.

  Further, in the nozzle maintenance system NMS in the present embodiment, the nozzle holder 3 can be mounted in both the nozzle cleaning device 1a and the nozzle inspection device 1, and the nozzle cleaning device 1a cleans the nozzle 2 held by the nozzle holder 3. After that, if the nozzle inspection device 1 is to inspect the nozzle 2 received together with the nozzle holder 3 from the nozzle cleaning device 1a, the operation of moving the nozzle 2 from the nozzle cleaning device 1a to the nozzle inspection device 1 Is extremely easy, and the workability of the nozzle inspection work is greatly improved. Further, if the nozzle holder 3 can be used as it is as the mounting portion of the nozzle 2 in the component mounting apparatus 1b, the moving operation of the nozzle 2 from the nozzle inspection apparatus 1 to the component mounting apparatus 1b becomes easy, and the workability is improved. Improve further.

  In the above-described embodiment, the inspection by the nozzle inspection apparatus 1 is performed after the nozzle 2 is washed, but the inspection timing by the nozzle inspection apparatus 1 is not limited to this. The nozzle inspection apparatus 1 of the present invention is also effective for inspecting nozzles 2 other than the cleaned nozzle 2 (for example, the nozzle 2 after being used in the component mounting apparatus 1b, the nozzle 2 during storage, etc.). .

  Moreover, in this Embodiment, although the mark imaging camera 12 and the nozzle imaging camera 13 are provided so that it may oppose an up-down position, it is not restricted to this. If the mark imaging camera 12 and the nozzle imaging camera 13 are arranged at positions facing each other, the same effect is obtained. Therefore, for example, it arrange | positions so that it may oppose in the left-right position, and there exists the same effect by arrange | positioning other structures suitably according to arrangement | positioning of both cameras.

  Provided are a nozzle inspection apparatus and a nozzle maintenance system that can improve inspection accuracy by reducing variations in inspection results and can also reduce inspection time.

DESCRIPTION OF SYMBOLS 1 Nozzle inspection apparatus 1a Nozzle cleaning apparatus 1b Component mounting apparatus 2 Nozzle 3 Nozzle holder 2c Component adsorption | suction end 2M Identification mark 12 Mark imaging camera (mark imaging means)
12L Mark illumination light source (mark illumination means)
13 Nozzle imaging camera (nozzle imaging means)
20b Information processing unit (information processing means)
NMS nozzle maintenance system

Claims (3)

A nozzle inspection device for inspecting nozzles used in component mounting devices,
Mark imaging means for imaging the identification mark provided on the nozzle from the end opposite to the component suction end of the nozzle located at the inspection position and obtaining individual identification information of the nozzle;
Nozzle imaging means for imaging the nozzle from the component suction end side of the nozzle located at the inspection position and acquiring state information of the nozzle;
An information processing unit that associates and processes the individual identification information of the nozzle acquired by the mark imaging unit and the state information of the nozzle acquired by the nozzle imaging unit;
The nozzle imaging apparatus, wherein the mark imaging unit and the nozzle imaging unit are provided at positions facing each other with the nozzle positioned at the inspection position interposed therebetween.   Mark illumination means for illuminating the identification mark of the nozzle positioned at the inspection position, the mark imaging means images the identification mark in a state where the identification mark is illuminated by the mark illumination means, The nozzle inspection apparatus according to claim 1, wherein the nozzle imaging unit images the nozzle in a state in which an internal pipe line of the nozzle is transmitted and illuminated by the mark illumination unit.   A nozzle cleaning device for cleaning a nozzle, the nozzle inspection device according to claim 1 or 2, and a nozzle holder for holding the nozzle, wherein the nozzle holder is mountable in the nozzle cleaning device and the nozzle inspection device, A nozzle cleaning device cleans the nozzle held by the nozzle holder, and the nozzle inspection device inspects the nozzle received from the nozzle cleaning device together with the nozzle holder.

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