JP6043965B2 - Head maintenance device and component mounting machine - Google Patents

Description

  The present invention relates to a head maintenance device that performs maintenance of a mounting head of a component mounter and a component mounter.

  The component mounting machine has a configuration in which a mounting head is moved by a head moving mechanism, a component supplied by a parts feeder is sucked to a suction nozzle provided in the mounting head, and is mounted on a substrate. The mounting head of such a component mounting machine needs to be regularly maintained. As a head maintenance device that performs maintenance, for example, an operator removes the mounting head from the head moving mechanism of the component mounting machine, sets it on the base of the maintenance device, and then pours cleaning liquid and grease into the air line of the mounting head. What is washed is known (for example, Patent Document 1).

JP2011-3679A

  However, the conventional head maintenance device has a problem that the mounting head needs to be removed from the head moving mechanism when performing the maintenance of the mounting head, so that the operation is complicated and requires a lot of time.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a head maintenance device and a component mounter that can easily and quickly perform maintenance of a mounting head.

The head maintenance apparatus according to claim 1, wherein a mounting head to which the suction nozzle can be attached and detached is moved by a head moving mechanism, and a component supplied by a parts feeder is sucked to the suction nozzle mounted on the mounting head to be attached to the substrate. A head maintenance device that performs maintenance of the mounting head of a component mounting machine to be mounted , the mounting head having a shaft member and a sliding member slidably attached to the shaft member, and the parts feeder A feeder base that is replaceable with the parts feeder, and a maintenance execution unit that performs maintenance on the mounting head. The maintenance execution unit operates the head moving mechanism. The sliding member retainer is configured to remove and retain the sliding member from the shaft member. Comprising means, the maintenance execution unit executes the maintenance to the mounting head in which the sliding member is removed by the operation of the head by the movement mechanism is moved above the maintenance executing section the head moving mechanism To do.

Head maintenance apparatus according to claim 2 is the head maintenance apparatus according to claim 1, before Symbol maintenance execution unit, said sliding member in a state in which the suction nozzle has been removed pressed by said shaft member There is provided a pressing load detecting means for detecting the pressing load when being applied.

The head maintenance device according to claim 3 is the head maintenance device according to claim 1 or 2 , wherein the maintenance execution unit is the sliding member of the shaft member in a state where the sliding member is removed. And a shaft member cleaning means for cleaning the sliding portion between them.

According to a fourth aspect of the present invention, there is provided a component mounting machine that moves a mounting head by a head moving mechanism, sucks a component supplied by a parts feeder to a suction nozzle mounted on the mounting head, and mounts the component on a substrate. Then, the head maintenance device according to any one of claims 1 to 3 is attached to a feeder base which is a holding portion of the parts feeder so as to be exchangeable with the parts feeder.

  In the present invention, a head maintenance device for performing maintenance of the mounting head is attached to the feeder base in a replaceable manner with a parts feeder, and performs maintenance on the mounting head moved upward by the head moving mechanism. Therefore, there is no need to remove the mounting head from the head moving mechanism during maintenance of the mounting head, and maintenance can be performed easily and in a short time.

The block diagram of the component mounting system in one embodiment of this invention The principal part perspective view of the component mounting machine which comprises the component mounting system in one embodiment of this invention The perspective view of the mounting head with which the component mounting machine in one embodiment of this invention is provided (A) (b) The partial expanded partial sectional view of the mounting head in one embodiment of this invention The block diagram which shows the control system of the component mounting machine in one embodiment of this invention The perspective view of the head maintenance apparatus in one embodiment of the present invention The principal part perspective view of the component mounting machine which shows the state which attached the head maintenance apparatus in one embodiment of this invention to the feeder base 1 is a partially enlarged perspective view of a head maintenance device according to an embodiment of the present invention. (A) (b) The elements on larger scale of the head maintenance device in one embodiment of the present invention 1 is a partially enlarged perspective view of a head maintenance device according to an embodiment of the present invention. The flowchart which shows the execution procedure of the head maintenance method using the head maintenance apparatus in one embodiment of this invention 1 is a partially enlarged perspective view of a head maintenance device according to an embodiment of the present invention. (A) (b) The elements on larger scale of the head maintenance device in one embodiment of the present invention

  Embodiments of the present invention will be described below with reference to the drawings. A component mounting system 1 shown in FIG. 1 is for mounting a component 4 on an electrode 3 provided on a substrate 2, and includes a solder printer 11 and a plurality of component mounters 12. The solder printing machine 11 and the plurality of component mounting machines 12 are arranged in this order from the upstream process side, and the solder printing machine 11 prints solder on each electrode 3 of the substrate 2. The component 4 is mounted on each electrode 3 of the substrate 2 on which the solder is printed by the solder printer 11.

  Each of the solder printer 11 and the plurality of component mounting machines 12 is connected to a host computer 14 via a communication line 13. In the present embodiment, the conveyance direction (left and right direction as viewed from the operator OP) of the board 2 in the component mounting system 1 is the X axis direction, and the horizontal plane direction (front and rear direction as viewed from the operator OP) orthogonal to the X axis direction is defined. The Y-axis direction is assumed. Also, the vertical direction is the Z-axis direction.

  In FIG. 2, each component mounting machine 12 is provided in a horizontal posture on a base 20, and a pair of board transfer conveyors 21 that transfer the board 2 received from the solder printing machine 11 in the X-axis direction, side of the board transfer conveyor 21. 1, a feeder base 22 coupled to the base 20, a plurality of parts feeders 23 as component supply means detachably attached to the feeder base 22, a head moving mechanism 24 composed of an XY robot, and a substrate transfer conveyor by the head moving mechanism 24. 21. A mounting head 25 that is movably provided above 21, a substrate camera 26 attached to the mounting head 25, a component camera 27 provided between the substrate transport conveyor 21 and the parts feeder 23, and operation control of these parts. A control device 28 (FIG. 1) is provided.

  Each part feeder 23 is composed of, for example, a tape feeder, and supplies the component 4 mounted on the substrate 2 by the mounting head 25 to the component supply port 23a (enlarged view in FIG. 2). On the lower surface of the parts feeder 23, a slot insertion portion 23s having an inverted “T” -shaped cross section is provided extending in the Y-axis direction. The parts feeder 23 is attached to the feeder base 22 by inserting the slot insertion portion 23s in a horizontal direction into a slot 22a provided on the upper surface of the feeder base 22 so as to extend in the Y-axis direction.

  3 and 4 (a) and 4 (b), the mounting head 25 is provided with a plurality of hollow shaft member holding portions 31 extending downward, and each shaft member holding portion 31 includes a Z-axis. A hollow shaft member 32 having an adsorption pipe line 32a extending in the direction is provided so as to be movable up and down with respect to the shaft member holding portion 31 and rotatable about the Z axis.

  4A and 4B, a nozzle holder 33 as a sliding member is detachably attached to the shaft member 32 at the lower end of each shaft member 32. The nozzle holder 33 has a cylindrical internal space 33a therein, and the shaft member 32 enters the internal space 33a from above. The inner diameter of the internal space 33 a of the nozzle holder 33 is slightly larger than the outer diameter of the shaft member 32, so that the nozzle holder 33 is slidable in the vertical direction along the outer peripheral surface of the shaft member 32.

  3 and 4A and 4B, a suction nozzle 34 extending downward is attached to the lower end of the nozzle holder 33. In other words, in the present embodiment, the mounting head 25 has a configuration in which the suction nozzle 34 is detachable.

  4 (a) and 4 (b), the suction nozzle 34 has a disk-shaped flange 34b at the lower part of the outer fitting part 34a fitted to the lower end of the nozzle holder 33. In the suction nozzle 34, a nozzle inner pipe 34 c extending in the vertical direction is provided. When the outer fitting portion 34 a of the suction nozzle 34 is fitted on the lower end of the nozzle holder 33, the nozzle of the suction nozzle 34 is provided. The inner pipe line 34 c communicates with the adsorption pipe line 32 a inside the shaft member 32 via the inner space 33 a of the nozzle holder 33. For this reason, when the vacuum pressure is supplied into the suction conduit 32 a of the shaft member 32 with the suction nozzle 34 attached to the nozzle holder 33, the vacuum pressure is also supplied into the nozzle inner conduit 34 c of the suction nozzle 34. In this state, when the component 4 is brought into contact (or close proximity) with the lower end of the suction nozzle 34, the component 4 is attracted to the lower end of the suction nozzle 34. Further, when the supply of the vacuum pressure to the suction pipe 32a of the shaft member 32 is stopped and the atmosphere is released while the part 4 is sucked to the lower end of the suction nozzle 34, the part 4 is detached from the lower end of the suction nozzle 34. To do.

  4A and 4B, a cylindrical spring accommodating member 35 opened downward is attached to the outer peripheral surface of the shaft member 32, and a compression spring 36 is accommodated in the spring accommodating member 35. Yes. The compression spring 36 biases the nozzle holder 33 downward with respect to the shaft member 32.

  As shown in FIG. 4A, the nozzle holder 33 is provided with a pair of projecting portions 33 b extending sideways, and the pair of projecting portions 33 b is formed on a part of the side surface of the spring accommodating member 35 in the vertical direction. It is possible to move in the vertical direction within a protrusion moving groove 35a provided extending in the direction of the protrusion. For this reason, in a state where no upward pressing force is applied to the lower end of the suction nozzle 34, the nozzle holder 33 abuts the lower end of the projection 33 b against the lower edge of the projection moving groove 35 a of the spring accommodating member 35 from above. However, when an upward pressing force acts on the lower end of the suction nozzle 34, the nozzle holder 33 resists the urging force of the compression spring 36 by the pressing force as shown in FIG. Move up. However, the upper limit of the upward movement of the nozzle holder 33 is limited where the protrusion 33b contacts the upper edge of the protrusion movement groove 35a from below.

  In FIG. 2, the substrate camera 26 is attached to the mounting head 25 with the imaging field of view directed downward, and moves with the mounting head 25 so that a pair of substrates on the substrate 2 positioned by the substrate transport conveyor 21. The mark 2m is imaged from above. The component camera 27 is provided on the base 20 with the imaging field of view facing upward, and images the component 4 passing through the upper side while being sucked by the suction nozzle 34 of the mounting head 25 from below.

  The substrate transport conveyor 21 transports and positions the substrate 2 by the control device 28 controlling the operation of the substrate transport conveyor 21 (FIG. 5). Each of the plurality of parts feeders 23 attached to the feeder base 22 is controlled by a control device 28 to supply the parts 4 to the parts supply port 23a. In FIG. 5, each parts feeder 23 has a feeder connector 23b. When the parts feeder 23 is attached to the feeder base 22, the feeder connector 23b is fitted to a feeder base connector 22b provided on the feeder base 22 side. Thus, signal transmission between the parts feeder 23 and the control device 28 becomes possible (FIG. 5).

  The movement operation of the mounting head 25 is performed by the control device 28 controlling the operation of the head moving mechanism 24 described above, and the control device 28 moves the shaft member 32 up and down with respect to the mounting head 25 for each shaft member 32. This is done by controlling the operation of the provided nozzle drive mechanism 37 (FIG. 5). Further, the suction operation of the component 4 via the suction nozzle 34 by the mounting head 25 is performed by the operation control of the suction control valve 38 (FIG. 5) provided for each shaft member 32 by the control device 28.

  In FIG. 5, the control of the imaging operation by the substrate camera 26 and the imaging operation by the component camera 27 are performed by the control device 28, and the image data of the board mark 2 m obtained by the imaging operation of the substrate camera 26 and the imaging of the component camera 27. The image data of the component 4 obtained by the operation is transmitted to the control device 28. The control device 28 recognizes the position of the board 2 by performing image recognition based on the image data of the board mark 2m obtained by imaging of the board camera 26, and the image data of the part 4 obtained by imaging of the part camera 27. The posture of the component 4 with respect to the suction nozzle 34 is grasped by performing image recognition based on the above.

  Next, a procedure when each component mounting machine 12 executes a component mounting operation for mounting the component 4 on each electrode 3 on the substrate 2 will be described. When the component mounter 12 performs a component mounting operation, first, the control device 28 operates the substrate transport conveyor 21 to carry in the substrate 2 sent from the solder printer 11 on the upstream process side of the component mounter 12, The substrate 2 is positioned by being stopped at a predetermined work position.

  After positioning the substrate 2, the control device 28 moves the mounting head 25 to position the substrate camera 26 above the substrate 2, and causes the substrate camera 26 to image the pair of substrate marks 2 m on the substrate 2. The position of 2 is grasped. Then, by comparing the grasped position of the substrate 2 with a preset reference position, the positional deviation of the substrate 2 from the reference position is obtained.

  When the control device 28 obtains a positional deviation from the reference position of the substrate 2, it controls the operation of each of the parts feeders 23 to supply the parts 4, and uses the suction nozzle 34 attached to the mounting head 25 as a part. The component 4 is adsorbed by the adsorption nozzle 34 by moving up and down above the component supply port 23 a of the feeder 23.

  The control device 28 moves the mounting head 25 when the component 4 is attracted by the suction nozzle 34 so that the component 4 passes above the component camera 27. Then, the component camera 27 is caused to image the component 4 to grasp the posture of the component 4 and the like, and the positional deviation of the component 4 with respect to the suction nozzle 34 is calculated. When the control device 28 grasps the posture and the like of the component 4, the mounting head 25 is positioned above the substrate 2, and the component 4 sucked by the suction nozzle 34 is mounted on the electrode 3 on the substrate 2. At this time, the control device 28 corrects the position and rotation direction of the suction nozzle 34 so that the calculated positional deviation of the substrate 2 and the positional deviation of the component 4 with respect to the suction nozzle 34 are cancelled.

  The control device 28 repeats the above procedure to mount the component 4 on the electrode 3 of the substrate 2. When all the components 4 to be mounted on the substrate 2 have been mounted, the substrate transport conveyor 21 is operated to carry the substrate 2 out of the component mounter 12.

  In the component mounting operation by the component mounting machine 12 as described above, when the component 4 sucked by the suction nozzle 34 is mounted on the substrate 2, the control device 28 lowers the shaft member 32 relative to the mounting head 25, and the suction nozzle The component 4 adsorbed on the substrate 34 is pressed onto the electrode 3 of the substrate 2 (FIG. 4 (a) → FIG. 4 (b)). At this time, the reaction force from the substrate 2 is applied to the lower end of the adsorption nozzle 34. The nozzle holder 33 slides upward with respect to the shaft member 32 against the urging force of the compression spring 36. The sliding of the nozzle holder 33 with respect to the shaft member 32 serves as a buffering function between the shaft member 32 and the nozzle holder 33, and the force transmitted from the shaft member 32 to the component 4 is reduced. It is prevented from being pressed against the substrate 2 with a strong force.

  However, a minute foreign substance may enter the slight gap S between the nozzle holder 33 and the shaft member 32 shown in FIGS. 4A and 4B, and in such a case, the nozzle for the shaft member 32 is used. Smooth sliding of the holder 33 is prevented. Then, when the component 4 is mounted on the substrate 2, the force transmitted from the shaft member 32 to the component 4 is increased as compared with the normal time, and when the suction nozzle 34 sucks a position shifted from the center of the component 4, the component 4. A force for shifting the component 4 in the lateral direction is generated during the pressing, and the component 4 is pushed in the lateral direction to cause a positional shift of the component 4 with respect to the electrode 3. Further, when the sliding is hindered, the component cannot be sucked and mounted at a normal height, so that suction failure and mounting displacement occur. For this reason, in the component mounting machine 12 in this Embodiment, the maintenance work of removing the foreign material between the shaft member 32 and the nozzle holder 33 regularly is performed.

  FIG. 6 shows a head maintenance device 40 used for maintenance of the mounting head 25 of the component mounting machine 12, and FIG. 7 shows a state where the head maintenance device 40 is attached to the feeder base 22 of the component mounting machine 12. . In FIG. 6, a head maintenance device 40 is provided on a base 41 that can be exchanged with the parts feeder 23 on a feeder base 22 that is a holding part of the parts feeder 23, and is provided on the base 41 to maintain the mounting head 25. The maintenance execution part 42 which performs is provided. The maintenance execution unit 42 performs maintenance on the mounting head 25 (specifically, each shaft member 32) moved above the maintenance execution unit 42 by the head moving mechanism 24 (FIG. 7).

  In FIG. 6, the base portion 41 of the head maintenance device 40 has a horizontal flat plate shape extending in the Y-axis direction, and has a reverse “T” -shaped cross section that can be inserted into the slot 22 a of the feeder base 22 on its lower surface. A slot insertion portion 41s is provided extending in the Y-axis direction. Here, four slot insertion portions 41 s are provided on the lower surface of the base portion 41 side by side in the X-axis direction at intervals corresponding to the intervals between the slots 22 a on the feeder base 22. The slot insertion portion 41 s is inserted into the slot 22 a on the feeder base 22. Here, among the both ends in the Y-axis direction of the head maintenance device 40 attached to the feeder base 22, the substrate transport conveyor 21 side is the front end, and the opposite end is the rear end.

  In FIG. 6, the maintenance execution unit 42 of the head maintenance device 40 is provided in a region on the front end side of the base unit 41, and includes a load cell 51, a nozzle holder attaching / detaching block 52, and a shaft cleaner 53. The head maintenance device 40 includes a control unit 54, and the load cell 51 and the shaft cleaner 53 are electrically connected to the control unit 54, respectively.

  In FIG. 5, the head maintenance device 40 has a maintenance device side connector 40a. When the head maintenance device 40 is attached to the feeder base 22, the maintenance device side connector 40a is fitted to the aforementioned feeder base side connector 22b and the head. Signal transmission between the maintenance device 40 and the control device 28 on the component mounter 12 side becomes possible.

  In FIG. 6, the load cell 51 is provided on a pedestal portion 41 a erected at the forefront portion of the base portion 41, and the nozzle holder 33 with the suction nozzle 34 removed is pressed from above by the shaft member 32. (FIG. 8). The load cell 51 detects the pressing load applied by the shaft member 32 and transmits the detected pressing load to the control unit 54 (FIG. 5).

  The load value detected by the load cell 51 increases as the sliding state of the nozzle holder 33 with respect to the shaft member 32 is not good. The control unit 54 of the head maintenance device 40 stores the first reference load selected as the load threshold, and the control unit 54 determines that the pressing load transmitted from the load cell 51 has the first reference load. Whether or not the sliding state of the nozzle holder 33 with respect to the shaft member 32 under the first reference load is determined based on whether or not it exceeds (that is, based on the detected pressing load). Here, as the first reference load, a pressing load that is expected to prevent the nozzle holder 33 from being normally removed from the shaft member 32 is set. The control unit 54 of the head maintenance device 40 stores a second reference load selected as a load threshold value for which the use of the shaft member 32 is inappropriate, and the control unit 54 transmits the load from the load cell 51. Based on whether or not the applied pressing load has exceeded the second reference load (that is, based on the detected pressing load), the nozzle holder 33 with respect to the shaft member 32 under the second reference load. The quality of the sliding state is judged. The first reference load and the second reference load may be the same value.

  In addition, although the method of measuring and determining the load when the nozzle holder 33 is pressed against the load cell 51 has been described as the determination of the quality of the sliding state, the present invention is not limited to this, and the following method may be used. .

  Depending on the sliding state of the nozzle holder 33 with respect to the shaft member 32, the behavior of the nozzle holder 33 when the shaft member 32 pressed against the load cell 51 is pulled up changes. When the sliding state is good, when the shaft member 32 is pulled up from the load cell 51, the nozzle holder 33 remains on the load cell 51 and is pulled up so as to follow after the shaft member 32 is pulled up. That is, even after the shaft member 32 starts to rise, a load is applied to the load cell 51 for a certain period of time. On the other hand, when the sliding state is poor, the nozzle holder 33 is pulled up as the shaft member 32 rises. That is, after the shaft member 32 starts to rise, no load is applied to the load cell 51 in a shorter time than when the sliding state is good. Therefore, it is possible to determine whether or not the sliding state is good by measuring the load applied to the load cell 51 after a predetermined time since the shaft member 32 is pressed against the load cell 51 and then starts to rise. In this case, the third reference load is stored, and a value obtained by measuring the load applied to the load cell 51 after a predetermined time has elapsed after pressing the shaft member 32 against the load cell 51 is the third reference load. When it is larger than the third reference load, it is judged that the sliding state is good, and conversely, when it is smaller than the third reference load, it is judged that the sliding state is bad.

  That is, in the present embodiment, the maintenance execution unit 42 presses the nozzle holder 33 with the suction nozzle 34 removed when the nozzle member 33 is pressed by the shaft member 32 or after pressing and after a predetermined time has elapsed. A load cell 51 is provided as a pressing load detecting means for detecting a load, and the load cell 51 is a slide that determines the sliding state of the nozzle holder 33 with respect to the shaft member 32 based on the detected pressing load. This is transmitted to the control unit 54 of the head maintenance device 40 as a moving state determination means.

  In FIG. 6, the nozzle holder attaching / detaching block 52 is composed of a block-like member attached to the upper surface of the block portion 41 b erected on the base portion 41, and the lower end of the nozzle holder 33 is inserted into the nozzle holder attaching / detaching block 52. A plurality of holder insertion holes 52a are provided. When removing the nozzle holder 33 from the shaft member 32, the shaft member 32 to which the nozzle holder 33 to be removed is attached is positioned above the holder insertion hole 52a, and then the shaft member 32 is lowered. Then, the nozzle holder 33 is inserted into the holder insertion hole 52a from above (FIG. 9A). Then, when the shaft member 32 is rotated around the vertical axis (Z axis), a projection (not shown) provided on the outer peripheral surface of the nozzle holder 33 is fitted into a locking groove (not shown) formed on the inner side surface of the holder insertion hole 52a. In addition, since the engagement between the shaft member 32 and the nozzle holder 33 is released, when the shaft member 32 is raised from this state, the nozzle holder 33 is left in the holder insertion hole 52a, and the nozzle holder 33 is moved to the shaft member. It is removed from 32 (FIG. 9B).

  As described above, in the present embodiment, the nozzle holder attaching / detaching block 52 is a sliding member holding unit that holds the nozzle holder 33 when the nozzle holder 33 is detached from the shaft member 32.

  Two shaft cleaners 53 are provided side by side in the Y-axis direction on the upper surface of the base portion 41 c provided in the base portion 41. Each shaft cleaner 53 has a cylindrical configuration opened upward, and a sliding portion (not shown) is formed in the internal space 53a. With the shaft member 32 inserted into the internal space 53a of the shaft cleaner 53, the shaft member 32 is repeatedly operated in the up and down direction, and further rotated by θ in the forward and reverse directions (FIG. 10), whereby the outer peripheral surface of the shaft member 32 The bottom surface (that is, the sliding portion between the shaft member 32 and the nozzle holder 33) is rubbed against the rubbed portion. Thereby, the dust adhering to the outer peripheral surface and bottom surface of the shaft member 32 is removed. Here, as the rubbed portion, for example, various types such as various fiber materials and resin materials may be used.

  Thus, in the present embodiment, the shaft cleaner 53 serves as a shaft member cleaning unit that cleans the sliding portion between the shaft holder 32 and the nozzle holder 33 in a state where the nozzle holder 33 is removed.

  FIG. 11 is a flowchart showing a flow of maintenance (head maintenance method) of the mounting head 25 performed using the head maintenance device 40 attached to the feeder base 22. Maintenance of the mounting head 25 using the head maintenance device 40 is performed in a state where the suction nozzle 34 is removed from each of the plurality of shaft members 32 included in the mounting head 25. The suction nozzle 34 is removed from the shaft member 32 when the mounting head 25 accesses a nozzle chainer NC (see FIGS. 2 and 7) provided on the base 20.

  In the maintenance of the mounting head 25, the operator OP first attaches the head maintenance device 40 to the feeder base 22 (head maintenance device attachment step of step ST1 shown in the flowchart of FIG. 11). After the head maintenance device 40 is attached to the feeder base 22, the operator OP operates the operation start command switch 54a (FIGS. 6 and 5) connected to the control device 28 of the component mounting machine 12 via the control unit 54 of the head maintenance device 40. Then, an operation start command of the maintenance execution unit 42 is performed (operation start command process of step ST2). When the control device 28 detects that the operation start command switch 54a is operated, the head moving mechanism 24 is above the head maintenance device 40 in which the mounting head 25 is attached to the feeder base 22 (specifically, the maintenance execution unit 42). (Upward) (moving head moving step of step ST3). Note that the operation start command in step ST2 may be issued from the control device 28 side of the component mounter 12, for example, from an operation unit (not shown) of the component mounter 12.

  When the control device 28 moves the mounting head 25 above the head maintenance device 40, the control device 28 moves one shaft member 32, which is currently subject to maintenance, to above the load cell 51 with the nozzle holder 33 attached, and the shaft member 32. The nozzle holder 33 in a state where the suction nozzle 34 is removed is pressed by the shaft member 32. The load cell 51 detects a load corresponding to the pressing force of the shaft member 32 (pressing load of the shaft member 32) (pressing load detecting step of step ST4), and the detected pressing load data is transmitted to the control unit of the head maintenance device 40. 54.

  When the data of the pressing load of the shaft member 32 is sent from the load cell 51, the control unit 54 applies to the shaft member 32 based on the sent pressing force of the shaft member 32 (that is, detected by the load cell 51). The quality of the sliding state of the nozzle holder 33 is determined (sliding state determining step in step ST5). Specifically, when the pressing load detected by the load cell 51 exceeds the first reference load described above, the sliding state of the shaft member 32 is defective, and nozzle removal in step ST7 described later is performed normally. Judge that it may not be possible.

  When the control unit 54 determines in step ST5 that the sliding state of the nozzle holder 33 with respect to the shaft member 32 is defective under the first reference load, the control unit 54 displays the identifier of the shaft member 32 as a slide. A flag indicating that the moving state is defective is attached and transmitted to the control device 28 of the component mounting machine 12. If the flag indicating that the sliding state is defective is attached to the identifier of the shaft member 32 transmitted from the control unit 54 of the head maintenance device 40, the control device 28 of the component mounting machine 12 has the shaft. For the member 32, the fact that the sliding state is defective is displayed on a display unit (not shown) provided in the component mounting machine 12, and the head maintenance operation is temporarily set to a standby state. Here, there is a possibility that the process of removing the nozzle holder 33 automatically in step ST7 to be described later is not normally performed on the shaft member 32 that is in a poor sliding state. Therefore, the operator OP manually removes the nozzle holder 33 with respect to the shaft member 32 in which the sliding state is determined to be defective. Further, although not essential, the shaft member 32 in which the sliding state is determined to be defective may be registered inappropriately (unsuitable registration step of step ST6). The registration of the shaft member 32 is performed when the registration control unit 28a of the control device 28 stores the identifier of the shaft member 32 in the storage unit 28b of the control device 28 (FIG. 5).

  On the other hand, when the control unit 54 determines in step ST5 that the sliding state of the nozzle holder 33 with respect to the shaft member 32 is not defective, the control unit 54 displays the identifier of the shaft member 32 currently being maintained as the sliding state. A flag indicating that it is good is attached and transmitted to the control device 28 of the component mounter 12. If the flag indicating that the sliding state is good is attached to the identifier of the shaft member 32 transmitted from the control unit 54 of the head maintenance device 40, the control device 28 of the component mounting machine 12 has the shaft. The member 32 is moved above the nozzle holder attaching / detaching block 52, and the nozzle holder 33 is removed from the shaft member 32 as described above (nozzle holder removing step in step ST7).

  The control device 28 of the component mounting machine 12 includes the shaft member 32 from which the nozzle holder 33 has been removed in step ST7 and the shaft member from which the nozzle holder 33 has been manually removed by the operator OP after it has been determined that the sliding state is poor in step ST5. 32, the shaft member 32 is moved downwardly and inserted into the inner space 53a of the shaft cleaner 53 after being moved upward of one shaft cleaner 53 (whichever is one of the two shaft cleaners 53). The shaft member 32 is repeatedly rotated in the forward and reverse directions. Thus, the sliding portion between the shaft member 32 and the nozzle holder 33 is cleaned (shaft member cleaning step of step ST8). By cleaning the sliding portion between the shaft member 32 and the nozzle holder 33, dust attached to the outer peripheral surface of the shaft member 32 is removed, and the sliding state of the nozzle holder 33 with respect to the shaft member 32 becomes better.

  When the control device 28 of the component mounting machine 12 cleans the shaft member 32 that is currently subject to maintenance, the mounting head 25 is moved above the component camera 27 and the shaft member 32 with the nozzle holder 33 removed is moved. The component camera 27 is imaged from below (shaft member imaging process in step ST9, FIG. 12).

  When a captured image of the shaft member 32 that is currently subject to maintenance is obtained, the control device 28 of the component mounter 12 inspects the bent state (whether or not the shaft member 32 is bent) based on the captured image. (Shaft member bending inspection process in step ST10). As a result, when it is detected that the shaft member 32 is bent beyond the allowable range, the identifier of the shaft member 32 is attached with a flag indicating that it is bent, and the control device of the component mounting machine 12 28. When the flag indicating that the shaft member 32 is bent is attached to the identifier of the shaft member 32 transmitted from the control unit 54 of the head maintenance device 40, the registration control unit 28a of the control device 28 The identifier of the shaft member 32 is stored in the storage unit 28b and unsuitable registration is performed (unsuitable registration step of step ST11).

  On the other hand, when the control device 28 of the component mounting machine 12 detects in step ST10 that the shaft member 32 that is currently subject to maintenance has not been bent beyond the allowable range, the controller 28 identifies the identifier of the shaft member 32. Then, a flag indicating that the vehicle is not bent is attached and transmitted to the control device 28 of the component mounter 12. When the flag indicating that the shaft member 32 is not bent is attached to the identifier of the shaft member 32 transmitted from the control unit 54 of the head maintenance device 40, the control device 28 of the component mounting machine 12 The nozzle holder 33 is attached to the shaft member 32 (nozzle holder attaching step of step ST12).

  The attachment of the nozzle holder 33 to the shaft member 32 is performed by a procedure reverse to the procedure in the nozzle holder removal process of step ST7. That is, the control device 28 moves the shaft member 32 above the nozzle holder 33 to be attached (FIG. 13A), lowers the shaft member 32, and moves upward to the holder insertion hole 52 a of the nozzle holder 33. Then, the shaft member 32 is rotated about the vertical axis (Z axis). As a result, the above-described protrusion (not shown) provided on the outer peripheral surface of the nozzle holder 33 is released from the locking groove locked to the inner side surface of the holder insertion hole 52a, while the nozzle holder 33 is engaged with the shaft member 32. Therefore, when the shaft member 32 is raised from this state, the nozzle holder 33 attached to the shaft member 32 comes out upward from the holder insertion hole 52a.

  After attaching the nozzle holder 33 to the shaft member 32 that is currently subject to maintenance, the control device 28 of the component mounting machine 12 moves the shaft member 32 above the load cell 51 and then lowers the shaft member 32. The nozzle holder 33 is pressed against the load cell 51 by the shaft member 32. At this time, the load cell 51 detects the pressing load of the shaft member 32, and transmits the data of the detected pressing load to the control unit 54 of the head maintenance device 40 (pressing load detection step of step ST13).

  When the data on the pressing load of the shaft member 32 is sent from the load cell 51 to the use suitability determining unit 28c (FIG. 5) of the control device 28, is the use of the shaft member 32 appropriate based on the pressing load? Make a decision. Specifically, when the pressing load detected by the load cell 51 exceeds the above-described second reference load selected as the threshold value of the load for which the use of the shaft member 32 is inappropriate, the sliding of the shaft member 32 is performed. It is determined that the state is bad and unsuitable for use (usage unsuitability determining step in step ST14).

  As described above, the load cell 51 and the control unit 54 of the head maintenance device 40 according to the present embodiment serve as an inspection unit that inspects each shaft member 32 that has undergone maintenance by the maintenance execution unit 42. In addition, the use suitability determination unit 28c of the control device 28 determines the mounting head 25 (shaft member 32) after the maintenance is performed based on the results of the inspection in steps ST12 to ST14 by the load cell 51 and the control unit 54 which are inspection means. ) Is a means for determining whether or not use is appropriate.

  When the control unit 54 determines in step ST14 that the sliding state after the maintenance of the shaft member 32 that is currently subject to maintenance is defective under the second reference load and unsuitable for use. The identifier of the shaft member 32 is transmitted to the control device 28 of the component mounter 12 with a flag indicating that the shaft member 32 is inappropriate for use. When the registration control unit 28a of the control device 28 of the component mounting machine 12 is flagged as inappropriate for use in the identifier of the shaft member 32 transmitted from the control unit 54 of the head maintenance device 40, The identifier of the shaft member 32 is stored in the storage unit 28b and unsuitable registration is performed (unsuitable registration step of step ST15).

  As described above, in the present embodiment, the registration control unit 28a and the storage unit 28b of the control device 28 are determined to be unsuitable for use by the use suitability determination unit 28c of the control device 28 which is use suitability determination means. It is a registration means for registering the head 25 (specifically, the shaft member 32).

  On the other hand, if it is determined in step ST14 that the target shaft member 32 is not unsuitable for use, the control unit 54 adds a flag indicating that the shaft member 32 is not unsuitable for use to a component mounting machine. 12 control devices 28. If the controller 28 of the component mounting machine 12 has a flag indicating that the shaft member 32 is not unsuitable for use in the identifier of the shaft member 32 transmitted from the control unit 54 of the head maintenance device 40, the control device 28 of the component mounting machine 12 After the maintenance is completed, it is determined whether or not the maintenance has been performed for all the shaft members 32 included in the mounting head 25 (determination step of step ST16). If maintenance has not been performed for all the shaft members 32, the process returns to step ST4, and the processing of steps ST4 to ST16 (the head maintenance device 40 for the mounting head 25) is performed for the shaft members 32 that have not yet been maintained. (Maintenance execution process for performing maintenance). On the other hand, if the maintenance has been performed on all the shaft members 32 in step ST16, the control device 28 ends the maintenance work of the mounting head 25.

  The control device 28 of the component mounting machine 12 performs the mounting operation of the component 4 on the board 2 after completing the maintenance operation of the mounting head 25, but the unsuitable shaft member 32 is registered (stored) in the storage unit 28b. If so, the shaft member 32 registered as unsuitable for use is not used in the mounting operation of the component 4. That is, the component mounter 12 restricts the use of the shaft member 32 (that is, the use of the mounting head 25) registered by the registration means (the registration control unit 28a and the storage unit 28b of the control device 28).

  As described above, in the component mounter 12 according to the present embodiment, the head maintenance device 40 that performs maintenance of the mounting head 25 is attached to the feeder base 22 in a replaceable manner with the parts feeder 23, and is moved upward by the head moving mechanism 24. Since the maintenance is performed on the mounting head 25 that has been moved to the position, it is not necessary to remove the mounting head 25 from the head moving mechanism 24 during the maintenance of the mounting head 25, and the maintenance can be performed easily and in a short time. It can be carried out.

  Further, in the head maintenance method in the present embodiment, the head maintenance device 40 that performs the maintenance of the mounting head 25 is attached to the feeder base 22 so as to be replaceable with the parts feeder 23 and moved upward by the head moving mechanism 24. Since maintenance is performed on the head 25, there is no need to remove the mounting head from the head moving mechanism 24 during maintenance of the mounting head 25, and the maintenance can be performed easily and in a short time.

  Furthermore, in the component mounting system 1 according to the present embodiment, after the maintenance of the mounting head 25 included in the component mounting machine 12 is executed by the head maintenance device 40, the state of the mounting head 25 is inspected (steps in the head maintenance operation described above). ST12 to ST14) are performed, and as a result, the mounting head 25 determined to be unsuitable for use is registered and its use is restricted (step ST15). Even if the mounting head 25 is not sufficiently maintained, it is possible to prevent a decrease in mounting accuracy of the component 4.

  Although the embodiments of the present invention have been described so far, the present invention is not limited to those shown in the above-described embodiments. For example, in the above-described embodiment, the shaft member 32 determined to be unsuitable for use is registered in the storage unit 28b of the control device 28 provided in the component mounter 12. However, this is not particularly limited, and the host Other storage means such as a storage unit (not shown) of the computer 14 may be used.

  In the above-described embodiment, the maintenance of the shaft member 32 is cleaning of the sliding state between the shaft member 32 and the nozzle holder 33 (sliding member) or inspection of the bending state of the shaft member 32. Others, for example, the inside of the shaft member 32 can be cleaned.

  Provided are a head maintenance device and a component mounter capable of easily and quickly performing maintenance of a mounting head.

2 substrate 4 component 12 component mounting machine 22 feeder base 23 parts feeder 24 head moving mechanism 25 mounting head 32 shaft member 33 nozzle holder (sliding member)
34 Suction nozzle 40 Head maintenance device 41 Base part 42 Maintenance execution part 51 Load cell (pressing load detection means)
52 Nozzle holder attaching / detaching block (sliding member holding means)
53 Shaft cleaner (shaft member cleaning means)

Claims (4)

Maintenance of the mounting head of the component mounting machine that moves the mounting head to which the suction nozzle can be attached and removed by a head moving mechanism, and sucks the component supplied by the parts feeder to the suction nozzle mounted on the mounting head and mounts it on the substrate. A head maintenance device for performing
The mounting head has a shaft member and a sliding member slidably attached to the shaft member;
A base part which is attached to the feeder base which is a holding part of the parts feeder in an exchangeable manner with the parts feeder;
A maintenance execution unit for performing maintenance on the mounting head;
The maintenance execution unit includes sliding member holding means for removing and holding the sliding member from the shaft member by the operation of the head moving mechanism,
The maintenance execution unit performs the maintenance on the mounting head that has been moved above the maintenance execution unit by the head moving mechanism and from which the sliding member has been removed by the operation of the head moving mechanism. Head maintenance device. Before Symbol maintenance execution unit, according to claim 1, characterized in that the sliding member in a state in which the suction nozzle has been removed with a load detecting means pushing for detecting the pressing load when pressed by the shaft member The head maintenance device as described in 1. The maintenance executing section according to claim 1, characterized in that a shaft member cleaning means for cleaning the sliding portion between the sliding member of the shaft member in a state in which the sliding member is removed Or the head maintenance apparatus of 2. A component mounting machine that moves a mounting head by a head moving mechanism, sucks a component supplied by a parts feeder to a suction nozzle mounted on the mounting head, and mounts it on a substrate,
A component mounting machine in which the head maintenance device according to any one of claims 1 to 3 is attached to a feeder base that is a holding portion of the parts feeder so as to be exchangeable with the parts feeder.

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