JP6285501B2 - Mounting head maintenance device - Google Patents

Description

The present invention relates to a mounting head maintenance apparatus for inspecting the performance of a mounting head after cleaning an air passage in a mounting head having a rotary head.

  In a component mounting machine including a rotary type mounting head, a rotary head holding a plurality of suction nozzles so as to be movable up and down is provided on the circumference so as to be indexable. In a component mounter equipped with this type of mounting head, negative pressure air is sequentially introduced into air passages connected to a plurality of suction nozzles in order to suck electronic components. When adsorbing electronic components, dust or the like is sucked into the air passage, so that the inside of the mounting head needs to be regularly maintained (cleaned).

  Conventionally, as a maintenance device, for example, one described in Patent Document 1 is known. In the device described in Patent Document 1, the revolver head 11 is removed from the head holding device 12 of the mounting head during maintenance, and the revolver head 11 is set on the base 33 of the maintenance device. Then, the maintenance adapter 40 is attached to the upper surface of the set revolver head 11, the air passage inside the revolver head 11 is connected to the maintenance liquid supply device 41, and a plurality of manual operation is provided on the circumference of the revolver head 11. The air passage connected to the suction nozzle is cleaned.

JP2011-3679A

  However, in the device described in Patent Document 1, the air passage connected to the plurality of suction nozzles provided on the circumference of the revolver head 11 is washed by manual operation. Since the revolver head 11 is disassembled and removed from the mounting head and set on the pedestal 33 of the maintenance device, the maintenance work becomes complicated and there is a problem that a lot of time is required for maintenance.

  Moreover, in the device described in Patent Document 1, the air passage in the revolver head 11 is merely washed, and since there is no function of inspecting the revolver head after washing, the air passage is cleaned well. There was a problem that it was not possible to verify whether it was broken.

The present invention has been made to solve the above-described problems, and provides a mounting head maintenance device that can inspect the performance of the mounting head after cleaning the mounting head including the rotary head. It is the purpose.

In order to solve the above-described problem, a feature of the invention according to claim 1 is a mounting head maintenance device that inspects a mounting head having a drive unit that raises or lowers or rotates a suction nozzle that sucks a component. It is to mount the removed mounting head and perform a performance inspection of the drive unit .
According to the configuration described above , the performance inspection of the drive unit can be performed easily and efficiently by mounting the mounting head removed from the component mounting machine on the mounting head maintenance device .

It is a perspective view which shows the whole component mounting machine which can apply the mounting head maintenance apparatus of this invention. It is a figure which shows the rotary type mounting head which concerns on embodiment of this invention. It is a figure which shows the head clamp apparatus which clamps a mounting head to an X-axis slide or a washing | cleaning unit. It is sectional drawing which shows the state which mounted | wore the mounting head to the X-axis slide or the washing | cleaning unit. It is a figure which shows the mechanical switching valve which opens and closes a negative pressure air channel | path. It is a figure which shows the washing | cleaning unit which wash | cleans the inside of a mounting head. It is a figure which shows the fluid supply circuit provided in the washing | cleaning unit. It is a block diagram which shows the control apparatus which controls a washing | cleaning unit. It is a flowchart which shows the cleaning cycle by air. It is a flowchart which shows the washing | cleaning cycle by oil. It is a flowchart which shows the test | inspection cycle after washing | cleaning.

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a component mounter 10 to which a mounting head maintenance device can be applied includes a component supply device 20, a substrate transport device 30, and a component transfer device 40.

  As an example, the component supply apparatus 20 includes a plurality of cassette-type feeders 21 arranged on the base 11 in the X-axis direction. The feeder 21 has a supply reel 23 that is removably attached to a main body frame 22 that is detachably attached to the base 11 and is wound with a tape that houses a large number of electronic components in a row at intervals. . Although not shown in the figure, a motor serving as a drive source for pitch-feeding the tape is incorporated inside the feeder 21, and the tape is fed out one pitch at a time by this motor, and the electronic component housed in the tape is the tip of the feeder 21. The components are sequentially supplied to the component supply position provided in the unit.

  The board transport device 30 transports the circuit board B in the X-axis direction and positions and holds the circuit board B at a predetermined position. As an example, the board transport device 30 is composed of a double conveyor type having two rows of transport means 31 and 32 arranged side by side. Yes. Each transport means 31, 32 has a pair of guide rails 33, 34 arranged in parallel on the base 11 so as to face each other in parallel. A pair of conveyor belts (not shown) for supporting and transporting the circuit board B guided by the guide rails 33 and 34 are arranged in parallel on the transport means 31 and 32.

  The component transfer device 40 is composed of an XY robot. The XY robot is mounted on the base 11 and disposed above the component supply device 20 and the substrate transport device 30, and extends along the guide rail 41 in the X-axis direction. A Y-axis slide 43 that is movable in the orthogonal Y-axis direction is provided. The movement of the Y-axis slide 43 in the Y-axis direction is controlled by a servo motor 44 via a ball screw. An X-axis slide 45 is guided and supported on the Y-axis slide 43 so as to be movable in the X-axis direction, and movement of the X-axis slide 45 in the X-axis direction is controlled by a servo motor 46 via a ball screw.

  As will be described in detail later, a mounting head 47 having a suction nozzle that sucks an electronic component is detachably mounted on the X-axis slide 45. The X-axis slide 45 is attached with a board camera 48 for imaging a reference mark (not shown) of the circuit board B.

  As shown in FIG. 2, the mounting head 47 has a head body 50 that is detachably attached to the X-axis slide 45. An index shaft 52 indexed by a predetermined angle by an R-axis motor 51 is rotatably supported on the head body 50, and a rotary head 53 is fixed to the lower end of the index shaft 52.

  A plurality of (for example, twelve) nozzle shafts 54 are held on the circumference of the rotary head 53 so as to be movable up and down in a direction parallel to the rotation axis of the rotary head 53. The nozzle shaft 54 is normally held at the rising end position by the spring force of a spring (not shown). A suction nozzle 55 that sucks an electronic component is detachably attached to each tip of the nozzle shaft 54.

  As a result, when the R-axis motor 51 is driven, the nozzle shaft 54 holding the plurality of suction nozzles 55 via the index shaft 52 is rotated about the vertical axis (R-axis direction), and the plurality of suction nozzles 55 are moved. The index is sequentially indexed to a predetermined angular position (component suction position).

  A rotating body 58 having a driven gear 56 and a θ-axis gear 57 is supported on the index shaft 52 so as to be rotatable only. A θ-axis motor 59 is fixed to the head body 50, and a driven gear 56 is meshed with a drive gear 60 that is rotated by the θ-axis motor 59. The θ-axis gear 57 is formed over a predetermined length along the axial direction of the rotating body 58, and the nozzle gear 61 fixed to the upper end of each nozzle shaft 54 meshes with the θ-axis gear 57 so as to be slidable relative to each other. Has been.

  Thus, when the θ-axis motor 59 is driven, all the nozzle shafts 54 are rotated (spinned) with respect to the rotary head 53 via the drive gear 60, the driven gear 56, the θ-axis gear 57 and the nozzle gear 61. .

  In the head body 50, a nozzle operating member 62 is guided by a guide bar 63 so as to be slidable in the vertical direction. The nozzle operating member 62 is moved up and down by a ball screw mechanism 65 operated by a Z-axis motor 64 fixed to the head body 50. The nozzle operating member 62 has a pressing portion 66 that abuts on the upper end of the nozzle shaft 54 indexed to the component suction position and presses the nozzle shaft 54 downward in the Z-axis direction.

Thus, when the Z-axis motor 64 is driven, the nozzle operating member 62 is moved in the vertical direction by the ball screw mechanism 65, and the nozzle shaft 54 indexed to the component suction position by the pressing portion 66 is moved up and down in the Z-axis direction. Is done. The θ-axis motor 59 and the Z-axis motor 64 constitute a drive unit that moves the suction nozzle 55 up and down or rotates.

  A component camera 68 (see FIG. 1) that captures an image of the electronic component sucked by the suction nozzle 55 from below is fixed on the base 11. The component camera 68 images the electronic component sucked by the suction nozzle 55 while moving from the component supply position of the component supply device 20 to a predetermined position on the circuit board B, and the core of the electronic component with respect to the center of the suction nozzle 55. Deviations and angular deviations are detected, and the movement amount of the mounting head 47 in the X and Y directions is corrected based on the misalignment and the like, and the suction nozzle 55 is rotated to correct the angle. It is possible to mount it accurately at the specified coordinate position.

  A plurality of types of mounting heads 47 having the above-described configuration are prepared according to the type of the circuit board B or the like. These mounting heads 47 are detachably mounted on the X-axis slide 45, and are removed from the X-axis slide 45 when the mounting head 47 is cleaned or inspected, and mounted on a cleaning unit 90 (see FIG. 6) described later. Is done.

  Next, the configuration of the head clamp device 70 that clamps the mounting head 47 to the X-axis slide 45 will be described with reference to FIGS. 3 and 4.

  In FIG. 3, the mounting head 47 is detachably mounted on the front portion of the X-axis slide 45. That is, an engagement block 71 is provided on the upper portion of the back surface of the mounting head 47 attached to the front portion of the X-axis slide 45, and the engagement roller 72 has an axis line parallel to the X-axis direction. It is supported so that it can rotate around. Further, two leg portions 73 having a V-shaped cross section are formed at a position spaced apart by a predetermined amount in the X-axis direction at a position spaced apart from each other by a predetermined amount in the X-axis direction.

  On the other hand, a storage hole 74 for storing the engagement block 71 is formed in the upper part of the front portion of the X-axis slide 45, and a pair of upper positioning positions that engage with both sides of the engagement block 71 in the storage hole 74. Rollers 75 are provided apart in the X-axis direction. In addition, two V-groove leg support portions 76 that engage with the two leg portions 73 are formed at the lower part of the front portion of the X-axis slide 45, and a pair of leg support portions 76 are disposed above the leg support portions 76. Lower positioning rollers 77 are provided spaced apart in the X-axis direction. The pair of lower positioning rollers 77 are adapted to be engaged with the inner end surfaces of the two leg portions 73 of the mounting head 47.

  Accordingly, the mounting head 47 is restricted from moving in the Z-axis direction with respect to the X-axis slide 45 by the engagement between the two leg portions 73 and the two leg support portions 76. Moreover, each of the pair of upper positioning rollers 75 and lower positioning rollers 77 is engaged with both sides of the engagement block 71 and the inner end surfaces of the two leg portions 73, so that the mounting head 47 is moved to the X-axis slide 45. In contrast, movement in the X-axis direction is restricted. In this state, the back surface portion of the mounting head 47 can come into surface contact with the front surface portion of the X-axis slide 45.

  As shown in FIG. 4, a pusher member 80 is supported on the upper portion of the X-axis slide 45 so as to be slidable in the vertical direction, and the rotational movement is restricted by a pin 81. An inclined surface 80 a that engages with an engagement roller 72 that is pivotally supported by the mounting head 47 is formed at the tip (lower end) of the pusher member 80. The inclined surface 80 a of the pusher member 80 acts so as to press the back surface portion of the mounting head 47 against the front surface portion of the X-axis slide 45 by engaging with the engaging roller 72. A wedge surface 80b is formed at the upper end of the pusher member 80, and the wedge surface 83a of the pressing member 83 is wedge-engaged with the wedge surface 80b. The pressing member 83 is moved in the axial direction by an operation of an operating member (not shown), and presses the pusher member 80 downward via both wedge surfaces 83a and 80b.

  The mounting head 47 is connected to a negative pressure air passage 85 (see FIG. 5) formed in the center of the nozzle shaft 54 via a communication passage 134 (see FIG. 5) and an air introduction passage 133. A path 132 is provided. The connection line 132 is connected to a supply line 131 provided on the X-axis slide 45 when the mounting head 47 is mounted on the X-axis slide 45.

As shown in FIG. 5, the suction nozzle 55 sucks electronic components by supplying negative pressure air to a negative pressure air passage 85 formed in the center of the nozzle shaft 54, and the supply of negative pressure air is cut off. At the same time, the electronic component is released by supplying positive pressure. Switching between supply and shutoff of negative pressure air to the negative pressure air passage 85 is performed by a mechanical switching valve 87 (hereinafter referred to as a mechanical valve 87) provided in each nozzle shaft 54 .

  The same number (N) of mechanical valves 87 as the suction nozzles 55 are fitted to the rotary head 53 so as to be slidable in the vertical direction. Each upper end of the mechanical valve 87 protrudes from the upper surface of the rotary head 53, and an engaging portion 87a is formed in these protruding portions. The engaging portion 87a of the mechanical valve 87 is detachably engageable with the engaging portion 89a of the operating shaft 89 that is moved up and down by a predetermined amount by the stepping motor 88, and the engagement of the operating shaft 89 is determined by the index of the rotary head 53. The engaging portion 87a of the mechanical valve 87 is sequentially engaged with the joint portion 89a.

  The mechanical valve 87 is prevented from sliding due to gravity or the like by a frictional force holding device (not shown). As long as the mechanical valve 87 is not applied with a force large enough to overcome the frictional force, the mechanical valve 87 is lowered or lowered. It is held at the end position.

  The mechanical valve 87 corresponding to the suction nozzle 55 indexed to the component suction position is disengaged from the operating shaft 89 by the rotation of the rotary head 53 (R-axis rotation), and when the rotary head 53 is indexed by a predetermined angle, A mechanical valve 87 corresponding to the adjacent suction nozzle 55 is engaged with the operating shaft 89. Then, the operating shaft 89 is moved up and down by the stepping motor 88 to be moved between the rising end position and the falling end position.

  When the mechanical valve 87 is moved from the position shown in FIG. 5 to the rising end position, the mechanical valve 87 is turned ON, and the air supplied into the mounting head 47 can be introduced into the negative pressure air passage 85. On the contrary, the mechanical valve 87 is turned OFF by the movement of the mechanical valve 87 to the lower end position, and the introduction of the air supplied into the mounting head 47 into the negative pressure air passage 85 is blocked.

FIG. 6 is a perspective view showing the entire cleaning unit 90 for cleaning the negative pressure air passage 85 of the mounting head 47. The cleaning unit 90 is installed on a work table 93 with casters 92. Together with the work table 93, it can be moved to an arbitrary position. A mounting head 47 having a rotary head 53 (see FIG. 2) is appropriately mounted on the cleaning unit 90, and is covered with an unillustrated cover that is made of a resin that is transparent to some extent. The cleaning unit 90 is provided with an operation panel 95. The operation panel 95 is provided with a display unit 125 (monitor) and a data input keyboard 126. The keyboard 126 has various operation buttons such as a start button SB, An arrow key 128 for moving the cursor displayed on the display unit 125 is provided.

  The display unit 125 displays a selection mode or the like of whether the mounting head 47 mounted on the cleaning unit 90 is to be cleaned or inspected, and also displays the inspection result after cleaning.

  The cleaning unit 90 is provided with a head clamp device 96 at a position where the mounting head 47 removed from the component mounting machine 10 is mounted. The head clamp device 96 causes the mounting head 47 to be attached to the unit main body 91 of the cleaning unit 90. The clamp is positioned. Further, the cleaning unit 90 is provided with an oil recovery box 98 having a dirt suction blower 97 for sucking air and oil that has cleaned the inside of the mounting head 47.

  The head clamp device 96 is the same (same configuration) as the head clamp device 70 (see FIG. 4) for clamping the mounting head 47 to the X-axis slide 45 of the component mounting machine 10. FIG. A state in which the mounting head 47 is mounted (positioning clamp) on 90 unit main bodies 91 is shown. When cleaning the mounting head 47, the mounting head 47 is removed from the component mounting machine 10 and carried to the cleaning unit 90, and is mounted on the unit main body 91 of the cleaning unit 90 by the head clamp device 96.

FIG. 7 shows a fluid supply circuit 100 provided on the cleaning unit 90 side. The fluid supply circuit 100 includes an air supply passage 102 connected to an air supply source 101 (compressor). Is connected to a main passage 104 in which a regulator valve 103 is arranged.

  The main passage 104 is selectively connected to the cleaning air passage 116 and the cleaning oil passage 117 via the air / oil cleaning switching valve 115. The cleaning air passage 116 and the cleaning oil passage 117 are connected to each other before the cleaning / inspection path switching valve 110 and are connected to an input port of the cleaning / inspection path switching valve 110.

  A lubricator 118 (see FIG. 6) is disposed in the cleaning oil passage 117, and the main passage 104 and the cleaning oil passage 117 are connected by switching the air / oil cleaning switching valve 115. When air is supplied to the cleaning oil passage 117, the lubricator 118 converts the oil into a mist and sends it to the input port of the cleaning / inspection path switching valve 110.

  In addition, as oil, what mixed the volatile solvent in the fluorine oil is used, for example. Conversely, when the main passage 104 and the cleaning air passage 116 are connected by switching the air / oil cleaning switching valve 115, air is sent to the input port of the cleaning / inspection path switching valve 110.

  On the other hand, the main passage 104 is connected to an inspection air passage 106 via an inspection valve 105 disposed in parallel with the air / oil cleaning switching valve 115. A flow measurement sensor 108 and a filter 109 are disposed in the inspection air passage 106 from the upstream side, and the air that has passed through the filter 109 is sent to the input port of the cleaning / inspection path switching valve 110. Further, a vacuum pressure measuring sensor 112 for measuring the air pressure flowing through the inspection air passage 106 is connected to the branch passage 111 branched from the inspection air passage 106. The flow measuring sensor 108 and the vacuum pressure measuring sensor 112 constitute an air measuring means.

  Then, by switching between the air / oil cleaning switching valve 115 and the inspection valve 105, the inspection air supplied through the inspection air passage 106, or the cleaning air passage 116 or the cleaning oil passage 117 is selectively used. The supplied air or oil (oil mist) is supplied to the supply line 130 provided in the unit main body 91 via the cleaning / inspection path switching valve 110.

By the inspection valve 105 and the air / oil cleaning switching valve 115 described above, the air supplied from the air supply source 101 is selectively supplied to the cleaning air passage 116, the cleaning oil passage 117, or the inspection air passage 106. It constitutes switching means.

  Further, a dirt suction blower 97 (see FIG. 6) is connected to the air supply passage 102 via a dirt suction valve 119. The dirt suction valve 119 is switched when the mounting head 47 is cleaned, and the dirty air or oil discharged from the tip of the suction nozzle 55 of the mounting head 47 is sucked by the dirt suction blower 97. To prevent splashing.

  By the positioning clamp of the mounting head 47 to the unit main body 91 of the cleaning unit 90, the supply pipe line 130 provided in the unit main body 91 and the connection pipe line 132 provided in the head main body 50 of the mounting head 47 are connected to each other. Air and oil are supplied to the air introduction passage 133 formed in the mounting head 47 from the cleaning unit 90 side through the supply pipe line 130 and the connection pipe line 132. An introduction means for introducing air into each negative pressure air passage 85 from the cleaning air passage 116, the cleaning oil passage 117, or the inspection air passage 106 by the supply pipe 130, the connection pipe 132, and the air introduction passage 133. It is composed.

  FIG. 8 shows a control device 120 that controls the cleaning unit 90. The control device 120 includes a central processing unit (CPU) 121 and memories (ROM 122 and RAM 123) that store various control data and control programs. The input / output interface 124 is provided. The input / output interface 124 is connected to the display unit 125 of the operation panel 95 described above.

  The input / output interface 124 is connected to a motor control unit 127 that controls the R-axis motor 51, θ-axis motor 59, Z-axis motor 64, and stepping motor 88 of the mounting head 47 mounted on the cleaning unit 90. The flow rate measurement sensor 108 and the vacuum pressure measurement sensor 112 of the fluid supply circuit 100 are connected. The control device 120 executes a cleaning cycle and an inspection cycle of the mounting head 47 mounted on the cleaning unit 90.

The serial number of the mounting head 47 mounted on the cleaning unit 90 is displayed on the display unit 125 of the operation panel 95, the date and time of cleaning or inspection, various inspection results, and the pass / fail judgment result based on the inspection result. Are displayed, and these display contents are stored in the RAM 123 of the control device 120.
An external computer 140 is connected to the control device 120 via a LAN cable 141, and data such as the date and time of cleaning and inspection results can be transferred to the external computer 140 via the LAN cable 141 and stored. ing. As a result, the external computer 140 can browse the history of cleaning and inspection, and can notify the next cleaning time and the like.

  Next, an operation for cleaning or inspecting the mounting head 47 will be described. When cleaning or inspecting the mounting head 47, the mounting head 47 is removed from the X-axis slide 45 of the component mounting machine 10 and mounted on the unit main body 91 of the cleaning unit 90. The mounting head 47 can be mounted on the cleaning unit 90 in the same manner as the mounting on the component mounting machine 10.

  Specifically, the leg 73 of the mounting head 47 is engaged with the leg support (76) of the unit main body 91, and the engagement block 71 and the leg 73 of the mounting head 47 are connected to the upper part of the unit main body 91 and The back surface of the mounting head 47 is brought close to the surface of the unit main body 91 while being engaged with the lower positioning rollers (75, 77). As a result, the pusher member (80) in the free state is lifted by the engagement roller 72, the engagement roller 72 gets over the pusher member (80), and the back surface of the head main body 50 of the mounting head 47 is the surface of the unit main body 91. The part is touched.

  As a result, the supply conduit 130 on the cleaning unit 90 side and the connection conduit 132 on the mounting head 47 side are connected to each other, and air and oil are supplied from the air supply source 101 of the cleaning unit 90 to the air introduction passage 133 in the mounting head 47. The mist can be supplied.

  By operating an operation member (not shown) in this state, the pusher member (80) is pressed downward by the wedge action, and the pusher member (80) engages with the engagement roller 72, so that the back surface of the mounting head 47 Is pressed against the surface of the unit main body 91 of the cleaning unit 90, and the mounting head 47 is positioned and clamped to the cleaning unit 90. Thereafter, the electrical system and the communication system of the cleaning unit 90 and the mounting head 47 are connected by connectors, and preparations for cleaning and inspection are completed.

  In this manner, when the mounting head 47 is mounted on the cleaning unit 90 and the cover (not shown) is closed, the serial number of the mounting head 47 is displayed on the operation panel 95 and the cleaning mode or the inspection mode is executed. The screen for selecting whether to do is displayed. Here, for example, when the cleaning mode is selected, a selection screen for cleaning with air or cleaning with oil (for example, oil mist containing fluorine oil) is displayed. When cleaning with air is selected and the start button SB on the operation panel 95 is operated, a cleaning cycle with air is executed.

  Since cleaning with air is simpler than cleaning with oil, for example, cleaning with air is performed every month, for example, cleaning with oil that also serves as lubrication is performed every three months, and if necessary, It is preferable to carry out the inspection mode. Thus, the mounting head 47 can be effectively cleaned and inspected without wasting time.

When air cleaning is selected, an air cleaning cycle shown in the flow of FIG. 9 is executed. That is, in step 200, the rotary head 53 is moved to the original position by the R-axis motor 51, and then in step 202, the R-axis is indexed by a predetermined angle (360 / N degrees when the number of suction nozzles 55 is N). . In the next step 204, the mechanical valve 87 provided corresponding to each suction nozzle 55 is turned off (state shown in FIG. 5) by the stepping motor 88, and the negative pressure air passage 85 is closed.

  Next, in step 206, it is determined whether or not the index of the R axis has been repeated N times. If it is determined that the index is less than N times, the processes in steps 202 to 206 described above are repeated. If it is determined in step 206 that the R-axis index has been repeated N times, the process proceeds to step 208 described later. By such processing, all the mechanical valves 87 corresponding to each suction nozzle 55 are turned off, and all the negative pressure air passages 85 communicating with each suction nozzle 55 are reset to the closed state.

  Next, in step 208, the air / oil cleaning switching valve 115 is switched to the right side (the cleaning air passage 116 side) in FIG. 7, and the cleaning / inspection path switching valve 110 is switched to the right side in FIG. The dirt suction valve 119 is switched to the right in FIG. Thus, the air supplied from the air supply source 101 to the air supply passage 102 is supplied to the supply pipe of the cleaning unit 90 via the air / oil cleaning switching valve 115, the cleaning air passage 116, and the cleaning / inspection path switching valve 110. Air is supplied to the path 130, and air is introduced into the air introduction passage 133 in the mounting head 47 through the connection pipe line 132 of the mounting head 47. At the same time, the air supplied to the air supply passage 102 is supplied to the dirt suction blower 97 via the dirt suction valve 119 to operate the dirt suction blower 97.

  Subsequently, in step 210, the mechanical valve 87 corresponding to the first suction nozzle 55 indexed to the component suction position is raised by the stepping motor 88 and turned ON, and the negative pressure air passage 85 leading to the first suction nozzle 55 is opened. Opened. As a result, the air introduced into the air introduction passage 133 in the mounting head 47 is supplied to the negative pressure air passage 85 that communicates with the first suction nozzle 55 via the communication passage 134 and is ejected from the tip of the suction nozzle 55. .

  The cleaning air introduced into the negative pressure air passage 85 is also supplied to the sliding portions of the nozzle shaft 54 and the mechanical valve 87, and dust or the like sucked into the negative pressure air passage 85 due to the suction of the electronic components from the inside of the mounting head 47. The contamination of the nozzle shaft 54 and the mechanical valve 87 is washed away. The air ejected from the tip of the suction nozzle 55 is sucked by the dirt suction blower 97 to prevent scattering.

  Next, at step 212, the nozzle operating member 62 moved up and down by the Z-axis motor 64 moves the nozzle shaft 54 holding the first suction nozzle 55 up and down in the Z-axis direction a predetermined number of times. Accordingly, dust and metal powder generated by sliding of the nozzle shaft 54 are effectively removed by air from the sliding portion of the nozzle shaft 54 (the fitting portion with the rotary head 53), and the nozzle shaft 54 becomes dirty. Is washed away. Thereafter, in step 214, the mechanical valve 87 corresponding to the first suction nozzle 55 is turned off again, and the negative pressure air passage 85 is closed.

  Next, in step 216, the R axis (rotary head 53) is indexed by a predetermined angle (360 / N degrees), and in the following step 218, it is determined whether or not the index of the R axis has been repeated N times. When the determination is made, the processes of steps 210 to 218 described above are repeated, the negative pressure air passages 85 communicating with the second and third suction nozzles 55 are opened, and the respective negative pressure air passages 85 are sequentially washed. The

  In step 218, when it is determined that the index of the R axis has been repeated N times, that is, the cleaning of the negative pressure air passage 85, the nozzle shaft 54, and the mechanical valve 87 leading to the last (Nth) suction nozzle 55 is completed. Then, the process proceeds to step 220, where the air / oil cleaning switching valve 115, the cleaning / inspection path switching valve 110, and the dirt suction valve 119 are switched to the original positions shown in FIG. 7, and the supply of air to the mounting head 47 is stopped. .

  Subsequently, in step 222, the inspection valve 105 is switched to the right in FIG. 7, and the air supplied from the air supply source 101 to the air supply passage 102 passes through the inspection valve 105 to the inspection air passage 106. Supplied. The air supplied to the inspection air passage 106 passes through the flow rate measurement sensor 108, and then supplied to the supply pipe 130 of the cleaning unit 90 via the cleaning / inspection path switching valve 110, and is connected to the mounting head 47. The air is introduced into the air introduction passage 133 in the mounting head 47 through the path 132.

  Subsequently, in step 224, the mechanical valve 87 is turned on, and the air introduced into the air introduction passage 133 is supplied to the negative pressure air passage 85 through the communication passage 134 by the ON operation of the mechanical valve 87, and the suction nozzle 55 More discharged to the outside.

  At this time, the flow rate measurement sensor 108 measures the flow rate flowing through the inspection air passage 106, and information on the measured flow rate is stored in the RAM 123 of the control device 120. The flow rate information stored in the RAM 123 is compared with a threshold value registered in advance in the ROM 122. When the measured flow rate exceeds the threshold value, that is, as a result of cleaning the mounting head 47, dust or the like is generated. If it is excluded and the air is sufficiently circulated, it is determined that the cleaning with the air has been performed satisfactorily and it is determined to be acceptable.

  Thereafter, in step 226, the mechanical valve 87 is turned off. Next, in step 228, the R-axis is indexed by a predetermined angle (360 / N degrees), and in the following step 230, it is determined whether or not the index of the R-axis has been repeated N times. Repeat steps 224-230 described above. If it is determined in step 230 that the R-axis index has been repeated N times, the process proceeds to step 232, and the inspection valve 105 is switched to the original position. Next, in step 234, the flow rate inspection result measured by the flow rate sensor 108 and the pass / fail determination result are displayed on the operation panel 95, and the cleaning cycle using air is completed.

  Thereafter, when the mounted mounting head 47 is removed from the cleaning unit 90 and another mounting head 47 is cleaned, the mounting head 47 is mounted on the cleaning unit 90 in the same procedure as described above, and cleaning with air is performed. When performing, the above-described cleaning cycle is started only by pressing the start button SB.

  On the other hand, when another cycle (cleaning or inspection with oil) is executed, the selected cycle is executed by selecting a selection screen displayed on the operation panel 95.

  FIG. 10 shows a flow of cleaning with oil. The difference from the above-described cleaning with air is that the air / oil cleaning switching valve in step 208 in the process of FIG. 9A (steps 200 to 220). 115 is switched to the left side of FIG. 7 (on the side of the cleaning oil passage 117), and the operations of steps 302 to 324 are added after the above step 220, and then the operation of FIG. The processing (steps 222 to 234) is performed.

  By switching the air / oil cleaning switching valve 115 to the left in FIG. 7, the air supplied to the main passage 104 is sent to the cleaning oil passage 117, and the lubricator 118 is used to mist the oil (fluorine oil) into the mounting head. The negative pressure air passage 85 can be cleaned with oil mist. The other processes are the same and will be omitted.

  In the additional steps 302 to 324, when oil (oil mist) is supplied into the negative pressure air passage 85, the oil adheres to the negative pressure air passage 85 and remains, or the sliding portion of the nozzle shaft 54 and the mechanical valve 87. Therefore, after cleaning with oil, air is supplied to the negative pressure air passage 85 to blow off the oil remaining in the mounting head 47, and then the idling operation is performed for a predetermined time (for example, about 30 seconds). This is because the sliding portions of the nozzle shaft 54 and the mechanical valve 87 are lubricated with the remaining oil. Therefore, in the following, the additional steps 302 to 324 will be mainly described.

  As shown in FIG. 9, in step 208, the air / oil cleaning switching valve 115 is switched to the left side of FIG. 7 (the cleaning oil passage 117 side), and in step 210, when the mechanical valve 87 is turned on, Air supplied to the passage 104 is sent to the cleaning oil passage 117, and oil (fluorine oil) is made into a mist form by the lubricator 118 and sent into the mounting head 47, and a negative pressure air passage 85 leading to the first suction nozzle 55 is provided. Wash with oil mist.

  In this manner, when the cleaning of the negative pressure air passage 85 leading to the last suction nozzle 55 with oil is completed and the process of FIG. 9A is completed, in step 300, the air / oil cleaning switching valve 115 is set to the cleaning air. While switching to the passage 116 side, the dirt suction valve 119 is changed to operate the dirt suction blower 97. Next, in step 302, the mechanical valve 87 is turned ON, and in step 304, the nozzle shaft 54 holding the first suction nozzle 55 is moved up and down a predetermined number of times in the Z-axis direction by the Z-axis motor 64.

  As a result, air is supplied to the negative pressure air passage 85 communicating with the first suction nozzle 55, and the oil attached to the negative pressure air passage 85, the nozzle shaft 54 and the sliding portion of the mechanical valve 87 is blown off by cleaning with oil. The air is ejected from the tip of the suction nozzle 55 and sucked by the dirt suction blower 97. Thereafter, in step 306, the mechanical valve 87 corresponding to the first suction nozzle 55 is turned off, and the negative pressure air passage 85 is closed.

  Next, in step 308, the R-axis is indexed by a predetermined angle (360 / N degrees), and in the following step 310, it is determined whether the index of the R-axis has been repeated N times. When it is determined that there are less than N times, the above steps 302 to 310 are repeated. If it is determined in step 310 that the index of the R axis has been repeated N times, the routine proceeds to step 312 where the air / oil cleaning switching valve 115 and the dirt suction valve 119 are switched to the original positions shown in FIG.

Subsequently, in step 314, the mechanical valve 87 corresponding to the first suction nozzle 55 is turned ON again. Next, in steps 316 and 318, the nozzle shaft 54 holding the suction nozzle 55 is lowered and raised by the Z-axis motor 64 . And idling. Thereby, the sliding part of the nozzle shaft 54 is effectively lubricated by the oil. Thereafter, in step 320, the mechanical valve 87 is turned off.

  Next, in step 322, the R axis is indexed by a predetermined angle, and the next suction nozzle 55 is indexed to the component suction position. Then, in the following step 324, it is determined whether or not the index of the R axis has been repeated N times. If it is determined that the index is less than N times, the processes in steps 314 to 324 described above are repeated. If it is determined in step 324 that the index of the R axis has been repeated N times, the process of FIG. 9B (steps 222 to 234) is performed, the flow rate inspection after cleaning with oil is performed, and the flow rate measurement sensor 108 The flow rate inspection result and the pass / fail judgment result measured in step (1) are displayed on the operation panel 95, and the oil cleaning cycle is completed.

  Next, an inspection cycle in an inspection mode for inspecting the performance of the mounting head 47 after cleaning the inside of the mounting head 47 with air or oil will be described based on the flow of FIG. When the inspection mode is executed, lids 135 (see FIG. 2) are placed at the tips of all the suction nozzles 55 so that air is not ejected from the tips of the suction nozzles 55. For this reason, the mounting head 47 is once removed from the cleaning unit 90. Then, with the mounting head 47 removed, the tip of the suction nozzle 55 is covered with a lid 135, and then the mounting head 47 is mounted on the cleaning unit 90 again.

  When the mounting head 47 is attached to the cleaning unit 90, the serial number of the mounting head 47 is displayed on the operation panel 95, and a selection screen for selecting whether the mode to be executed is cleaning or inspection is displayed. Here, when the inspection mode is selected and the start button SB is operated, the inspection mode is executed. That is, the inspection cycle shown in the flow of FIG. 11 is executed.

  11, in steps 400 to 406, all the mechanical valves 87 corresponding to the suction nozzles 55 are turned off in the same manner as described in steps 200 to 206 of FIG. The air passage 85 is reset to the closed state.

  Next, at step 408, the inspection valve 105 is switched to the right in FIG. As a result, the air supplied from the air supply source 101 to the air supply passage 102 is supplied to the inspection air passage 106 via the inspection valve 105. The air supplied to the inspection air passage 106 is supplied from the supply conduit 130 of the cleaning unit 90 to the air introduction passage 133 via the connection conduit 132 of the mounting head 47.

  Subsequently, in step 410, the mechanical valve 87 is turned on, and the negative pressure air passage 85 leading to the first suction nozzle 55 indexed to the component suction position is opened. As a result, the air introduced into the air introduction passage 133 in the mounting head 47 is supplied to the negative pressure air passage 85 that communicates with the suction nozzle 55 via the communication passage 134. However, since the suction nozzle 55 is covered with a lid 135 and air is prevented from being ejected from the tip of the suction nozzle 55, the air introduced into the negative pressure air passage 85 is transferred to the mechanical valve 87 and the nozzle shaft 54. It leaks to the outside through the sliding part. Due to such air leakage, the pressure in the negative pressure air passage 85 changes.

  Since the vacuum pressure measurement sensor 112 is connected to the inspection air passage 106 that communicates with the negative pressure air passage 85, the pressure of the air in the negative pressure air passage 85 is measured and measured by the vacuum pressure measurement sensor 112. Information on the air pressure is stored in the RAM 123 of the control device 120. The air pressure information is compared with a threshold value registered in advance in the ROM 202 to determine whether the air pressure is normal or abnormal.

  Next, in steps 412, 414, the Z-axis motor 64 is driven, and the nozzle shaft 54 holding the first suction nozzle 55 is lowered and raised in the Z-axis direction. The Z-axis movement time required for the lowering and raising of the nozzle shaft 54 by the Z-axis motor 64 is measured in the subsequent step 416 and stored in the RAM 123. Here, the Z-axis movement time depends on the sliding resistance of the nozzle shaft 54. For example, when foreign matters such as dust enter the sliding portion of the nozzle shaft 54, the sliding resistance is large. Thus, the Z-axis movement time becomes longer. Then, the Z-axis movement time stored in the RAM 123 is compared with a threshold value registered in advance in the ROM 122, and pass / fail is determined.

  In the following step 418, the mechanical valve 87 is turned off, and then in step 420, the R axis (rotary head 53) is indexed by the R axis motor 51 by a predetermined angle (360 / N degrees). In subsequent step 422, the R-axis movement time of the rotary head 53 by the R-axis motor 51 is measured and stored in the RAM 123. The R-axis movement time stored in the RAM 123 is compared with a threshold value registered in advance in the ROM 122, and pass / fail is determined.

  Next, in step 424, it is determined whether or not the index of the R axis has been repeated N times. If it is determined that the index of the R axis is less than N times, the processing in steps 410 to 420 described above is repeated and N times. When the determination is made, in step 426, the Z-axis movement time and the R-axis movement time and the pass / fail determination result based on the Z-axis movement time and the R-axis movement time are displayed on the display unit 125 of the operation panel 95. Whether the performance of 47 is normal or abnormal is displayed.

  For example, if even one of the N nozzle shafts 54 deviates from the threshold value in the Z-axis movement time and is determined to be unacceptable in the pass / fail determination, the mounting head 47 is determined to be abnormal. Although the mounting head 47 determined to be abnormal is removed from the cleaning unit 90, an abnormal measure is taken. In this case, since the inspection result reveals which nozzle shaft 54 is caused by the abnormality of the mounting head 47, it is possible to easily handle the abnormality of the mounting head 47. As a performance inspection of the mounting head 47, in addition to the Z axis and the R axis, the θ axis may be added.

  If the lid 135 can be attached to the suction nozzle 55 with the mounting head 47 mounted on the cleaning unit 90, the inspection cycle can be continued without removing the mounting head 47 after cleaning with air or oil. It becomes possible. In this case, the R axis of the rotary head 53 has already been moved to the original position, and all the mechanical valves 87 respectively corresponding to the plurality of suction nozzles 55 are held in the OFF state. The processing of 400 to 406 can be omitted.

  According to the embodiment described above, the mounting head 47 removed from the component mounter 10 is mounted by the head clamp device 96 common to the component mounter 10, and the negative pressure air passage 85 in the mount head 47 is mounted. Since the mounting head 47 is cleaned by supplying air or oil mist, cleaning of the mounting head can be performed easily and efficiently.

  Further, after the mounting head 47 is mounted on the cleaning unit 90, the cleaning mode or the inspection mode can be selected simply by operating the operation panel 95 according to the selection screen displayed on the operation panel 95, and the cleaning cycle or the inspection cycle can be selected. It can be easily implemented.

  In addition, the negative pressure air passage 85 can be cleaned by air or oil introduced into each negative pressure air passage 85 in the mounting head 47 from the cleaning air passage 116 or the cleaning oil passage 117 of the cleaning unit 90. . Thereby, dust or the like sucked into the negative pressure air passage 85 from the suction nozzle 55 at the time of picking up the components can be removed, and after the cleaning, the inspection valve 105 is switched and the mounting head is connected to the mounting head from the inspection air passage 106. By introducing air into 47, the information on the flow rate measured by the flow rate measurement sensor 108 provided in the inspection air passage 106 can be displayed on the operation panel 95. Pass / fail etc. can be displayed.

  According to the above-described embodiment, the negative pressure air passage 85 can be selectively cleaned with air or oil. For example, the negative pressure air passage 85 is cleaned with air at regular intervals, and is cleaned several times with air. Further, the mounting head 47 can be effectively cleaned by cleaning with oil. Further, the dirt suction blower 97 can prevent the dirty air or oil discharged from the suction nozzle 55 by the cleaning of the negative pressure air passage 85 from being scattered around.

  Further, according to the above-described embodiment, since the discharge of air from the suction nozzle 55 is blocked by the lid 135 during the inspection cycle, the nozzle shaft that holds the suction nozzle 55 that slides in the rotary head 53. 54, and the vacuum pressure measuring sensor 112 can inspect the leakage of air from each sliding portion such as the mechanical switching valve 87 for switching the supply and shutoff of the negative pressure air to the negative pressure air passage. .

Furthermore, the sliding resistance of the nozzle shaft 54 that holds the suction nozzle 55 can be measured by measuring the up and down movement time of the suction nozzle 55 that is lifted and lowered by the Z-axis motor 64 during the inspection cycle. It is possible to inspect abnormal conditions due to dust and metal powder.
In the above-described embodiment, the example in which the mounting head 47 removed from the component mounting machine 10 is mounted on the cleaning unit 90 by the head clamp device 96 common to the component mounting machine 10 has been described. Device 96 need not be.
In the above-described embodiment, an example in which the inside of the mounting head 47 provided with the rotary head 53 holding the plurality of suction nozzles 55 so as to be indexable has been described, but the present invention is a mounting having a single suction nozzle. The present invention can also be applied to cleaning the head 47.

  Thus, the present invention is not limited to the configurations described in the above-described embodiments, and can take various forms without departing from the gist of the present invention described in the claims. .

DESCRIPTION OF SYMBOLS 10 ... Component mounting machine, 47 ... Mounting head, 51 ... R axis motor, 53 ... Rotary head, 54 ... Nozzle shaft, 55 ... Suction nozzle, 59 ... θ axis motor, 64 ... Z axis motor, 85 ... Negative pressure air passage , 87 ... mechanical switching valve ( mechanical valve ) , 90 ... cleaning unit, 95 ... operation panel, 96 ... head clamp device, 97 ... dirt suction blower, 100 ... fluid supply circuit, 101 ... air supply source, 105 ... inspection valve, DESCRIPTION OF SYMBOLS 108 ... Flow measurement sensor (air measurement means) , 112 ... Vacuum pressure measurement sensor (air measurement means) , 110 ... Cleaning / inspection path switching valve, 115 ... Air / oil cleaning switching valve, 116 ... Cleaning air passage, 117 ... Oil passage for cleaning, 118 ... Lubricator, 120 ... Control device, 124 ... I / O interface , 130 ... Supply line (introducing means) , 132 ... Connection pipe line (introducing means) , 133 ... Air introducing passage (introducing means) , 135 ... Lid.

Claims (5)

A mounting head maintenance device for inspecting a mounting head having a drive unit for moving up and down or rotating a suction nozzle for sucking a component,
A mounting head maintenance device that mounts the mounting head removed from the component mounting machine and performs a performance inspection of the drive unit .   A mounting head maintenance device for inspecting a mounting head having a drive unit for moving up and down or rotating a suction nozzle for sucking a component,
  A head clamp device for mounting the mounting head removed from the component mounting machine;
  A control device for performing a performance inspection of the drive unit;
  A mounting head maintenance device comprising:   In claim 2,
  The mounting head has a rotary head that holds a plurality of the suction nozzles,
  The drive unit includes an R-axis motor that rotates the rotary head, a θ-axis motor that rotates the suction nozzle, and a Z-axis motor that moves the suction nozzle up and down.
  The control device is a mounting head maintenance device that determines pass / fail based on a moving time when the suction nozzle is driven by at least one of the R-axis motor, the θ-axis motor, and the Z-axis motor.   In claim 2 or claim 3,
  The control device is a mounting head maintenance device that also performs an inspection process for leakage of an air passage communicating with the suction nozzle.   5. The mounting head maintenance device according to claim 2, wherein the control device also executes cleaning processing of the suction nozzle and an air passage communicating with the suction nozzle. 6.

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