JP4194857B2 - Electronic component mounting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
According to the present invention, a mounting head movable in a direction along a beam movable in one direction by a driving source is provided, and an electronic component is attracted to the mounting head and conveyed by a substrate transport mechanism. The present invention relates to an electronic component mounting apparatus provided with a suction nozzle to be mounted on a substrate.
[0002]
[Prior art]
This type of electronic component mounting apparatus is disclosed in, for example, Japanese Patent Laid-Open No. 10-341098. In this type of electronic component mounting apparatus, it is common to dispose a component supply apparatus before and after the apparatus.
[0003]
[Patent Literature]
Japanese Patent Laid-Open No. 10-341098
[Problems to be solved by the invention]
For this reason, in this case, the component supply device for the tape storage electronic component and the component supply device for the tray storage electronic component are selected and installed according to the production form. However, when it is desired to handle several types of tray-accommodating electronic components, a tray replacement operation occurs, the operation waiting time of the mounting device increases, and the production efficiency decreases.
[0005]
Accordingly, an object of the present invention is to reduce the operation waiting time of the mounting apparatus and improve the production efficiency even when handling a plurality of types of tray-accommodating electronic components.
[0006]
[Means for Solving the Problems]
For this reason, the first invention is provided with a mounting head that can be moved by a driving source in a direction along the beam that can be moved in one direction by a driving source. In an electronic component mounting apparatus provided with a suction nozzle for mounting on a printed circuit board to be transported, it corresponds to two pallet stockers capable of storing pallets loaded with trays storing and arranging electronic components in multiple stages, and each pallet stocker. Two pallet introduction mechanisms for moving a pallet for storing a predetermined electronic component to a predetermined position in a pickup area for the electronic component, and a pallet for storing the predetermined electronic component at a predetermined position in the pickup area for the electronic component. 2 for relatively aligning each pallet stocker and each pallet introduction mechanism In the case of a small pallet, a pallet is stored in each pallet stocker, and the pallet for storing the predetermined electronic component by each pallet introduction mechanism and each elevator mechanism is electronically provided. In the case of a large pallet, the pallet is stored so as to straddle both pallet stockers, and the predetermined electronic component is provided by the pallet introduction mechanism and the elevator mechanism. The pallet for storing the battery is moved to a predetermined position in the pickup area of the electronic component.
[0007]
The second invention is characterized in that, in the first invention, a caster is provided at a lower portion of the electronic component supply device so that the caster is movable and detachable from the apparatus main body.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. 1 is a plan view of the electronic component mounting apparatus 1, FIG. 2 is a left side view of the electronic component mounting apparatus 1, and FIG. 3 is a longitudinal side view of the electronic component mounting apparatus 1. The electronic component mounting apparatus 1 includes a device main body 2 that mounts electronic components on a printed circuit board P, first component supply devices 3A, 3B, and 3C that supply relatively small electronic components to the device main body 2, and a device main body 2 And a second component supply device 4 for supplying large electronic components such as multi-lead components.
[0009]
The first component supply devices 3A, 3B, 3C are detachably attached to the device main body 2 via a connector (not shown) so that the tip portion on the component supply side faces the conveyance path of the printed circuit board P. Then, when the connecting tool is released and the handle (not shown) is pulled, it can be moved by a caster provided on the lower surface. The first component supply devices 3A, 3B, and 3C have a large number of cassette-type tape feeders 5 arranged in parallel, and are arranged so that the tip of the component supply side faces the pickup area of the mounting head 6. Each of the tape feeders 5 peels off the cover tape by the peeling mechanism (not shown) and supplies the electronic components loaded in the storage part of the carrier tape (not shown) one by one from the tip.
[0010]
Between the first component supply device 3A and the second component supply device 4 and the first component supply devices 3B and 3C facing each other, a supply conveyor 7 and a positioning unit 8 (having a conveyor) that constitute a substrate transport mechanism. ) And a discharge conveyor 9 are provided. The supply conveyor 7 conveys the printed circuit board P received from the upstream device to the positioning unit 8, and after the electronic components are mounted on the substrate P positioned by the positioning unit 8 (not shown), the discharge conveyor 9 and then to a downstream device (not shown).
[0011]
By moving the mounting head 6 in the XY direction by the XY stage 10, the mounting head 6 picks up an electronic component from the first component supply device 3A, 3B, 3C or the second component supply device 4, and positions the electronic component. It is mounted on the printed circuit board P on the part 8.
[0012]
The first component supply devices 3A, 3B, and 3C are not limited to those having a large number of cassette-type tape feeders 5 arranged side by side, and a stick-type supply device or a bulk-type supply device may be used.
[0013]
And the 2nd component supply apparatus 4 is provided in the upstream position of the supply conveyor 7 which comprises the said board | substrate conveyance mechanism. In the second component supply device 4, a large number of electronic components are arranged on the tray 11, and one or more trays 11 are mounted on the pallet 12, and the pallet 12 is picked up by the suction nozzle 17. By facing the area, the electronic component is supplied to the apparatus main body 2.
[0014]
Next, the XY stage 10 that moves the mounting head 6 in the XY direction will be described. That is, the beams 15 and 15 which are long in the X direction rotate the screw shaft (not shown) by driving the Y-axis motor, and move in the Y direction along the pair of left and right guides 16 and 16. Each mounting head 6 is moved in the X direction by the X-axis motor.
[0015]
Each mounting head 6 is equipped with a vertical axis motor for moving the suction nozzle 17 up and down, and a θ-axis motor for rotating around the vertical axis. Accordingly, each suction nozzle 17 of the mounting head 6 can move in the X direction and the Y direction, can rotate around a vertical line, and can move up and down.
[0016]
Note that a component recognition camera (not shown) for recognizing the position of the electronic component sucked by the suction nozzle 17 is disposed between the substrate transport mechanism and the first component supply devices 3B, 3C, the substrate transport mechanism, and the first component. A displacement amount with respect to the axis of the suction nozzle 17 is detected at a predetermined position between the one component supply device 3A and the second component supply device 4, and based on the detection result, the suction nozzle 17 corresponding to the displacement amount is detected. Are corrected and moved by the θ-axis motor, the X-axis motor that drives the XY stage 10, and the Y-drive motor.
[0017]
Next, the second component supply device 4 will be described in detail below. The second component supply device 4 is provided with a caster 18 at the lower portion of the supply device main body 4A so that the caster 18 can be moved through the handle 13, and at the same time, a fitting hole 19 that fits the positioning pin 2A provided in the device main body 2 is opened The apparatus main body 2 is configured to be detachable. The second component supply device 4 includes two pallet stockers 20 capable of accommodating a large number of pallets 12 mounted with trays 11 in which electronic components are accommodated and arranged, and is provided corresponding to each pallet stocker 20. Two pallet introduction mechanisms 21 for moving a pallet 12 for storing a predetermined electronic component to a predetermined position in the pickup area of the component, and the pallet 12 for storing the predetermined electronic component to a predetermined position in the pickup area of the electronic component Two elevator mechanisms 22 for relatively aligning each pallet stocker 20 and each pallet introduction mechanism 21 for movement are provided.
[0018]
Next, the pallet stocker 20 will be described with reference to FIGS. 4 and 5. In order to place the pallet 12 inside the stocker 20, a plurality of grooves 25 are formed on the left and right inner surfaces of the stocker body 20A in the vertical direction. Although not used when handling the large pallet 12, when handling the small pallet 12, a vertical partitioning member 26 for partitioning the stocker body 20A to the left and right is provided. A plurality of grooves 27 are also formed on the left and right side surfaces of the vertical partition member 26 in the same vertical direction. The inside of the stocker body 20A is opened, and the pallet 12 is pulled out from the opening to the apparatus body 2 side by the pallet introducing mechanism 21.
[0019]
Next, the pallet introduction mechanism 21 that moves the pallet 12 that stores a predetermined electronic component to a predetermined position in the pickup region of the electronic component will be described with reference to FIGS. 2 and 6 to 8. The stocker body 20A is provided with pulleys 31 on which a belt 30 is stretched. A drawer housing 32 is fixed to the belt 30, and the pulley 31 is rotated by forward and reverse driving of a drive motor (not shown). Thus, the drawer storage body 32 reciprocates along the chute 33 via the belt 30. That is, the drawer storage body 32 is provided with a pair of locking claws 34 that can be locked to the pair of hooks 29 of the pallet 12, and the guide 35 is moved away by a drive source (not shown). Then, the drawer storage body 32 is moved along the chute 33 by the drive mechanism, and the predetermined pallet 12 is introduced into the pickup area.
[0020]
The said elevator mechanism 22 is demonstrated based on FIG.6, FIG.9 and FIG.10. The elevator mechanism 22 is screwed into a part of the pallet introducing mechanism 21 to raise and lower it, guide rails 37 disposed on both sides of the ball screw 36, and an elevation motor 38 that rotates the ball screw 36. It consists of. When the ball screw 36 rotates forward and backward via the lifting motor 38, the pallet introducing mechanism 21 is guided by the guide rail 37 and moves up and down.
[0021]
In the lifting operation by the elevator mechanism 22 configured in this way, the level position of the desired pallet 12 of the pallet stocker 20 and the level position of the chute 33 of the pallet introduction mechanism 21 are matched, that is, the level position of the predetermined pallet 12 The pallet introduction mechanism 21 is moved by the elevator mechanism 22 to the drawer level position, and a predetermined pallet 12 is introduced into the pickup area by the pallet introduction mechanism 21.
[0022]
With the above configuration, the operation will be described below. First, the printed circuit board P is conveyed from the upstream device (not shown) to the supply conveyor 7 and further conveyed to the positioning unit 8 via the supply conveyor 7. Then, the positioning unit 8 is positioned and fixed by a positioning mechanism, and a plurality of positioning marks attached to the printed board P are imaged by a board recognition camera (not shown), and then a component picking operation and a mounting operation are performed.
[0023]
Then, according to the mounting data (not shown) in which the XY coordinate position to be mounted on the printed circuit board P stored for each step number, the rotation angle position about the vertical axis, the electronic components, etc. are designated, the mounting step number is first set. The electronic component to be mounted by the suction nozzle 17 corresponding to the component type of the electronic component 0001 is picked up and taken out from the first component supply device 3A, for example. At this time, the mounting head 6 moves to take out the electronic component to be mounted. However, the X-axis motor and the Y-axis motor are driven to move the XY stage 10 to move the mounting head 6, and the vertical motor is driven. The suction nozzle 17 is lowered to take out the electronic component from the first component supply device 3A.
[0024]
On the other hand, the mounting head 6 moves to an upper position of the printed circuit board P. During the movement, the mounting head 6 stops at an upper position of a component recognition camera (not shown), and the electronic component sucked and held by the suction nozzle 17 is moved to the component recognition camera. The position of the electronic component is recognized by the component recognition processing unit with respect to the XY direction and the rotation angle to determine how much the electronic component is displaced and held with respect to the suction nozzle 17.
[0025]
Then, the control device (not shown) captures the X-axis motor, the Y-axis motor, and the θ-axis by the board recognition camera imaged by the board recognition processing unit and the electronic component position deviation by the component recognition processing unit. The motor is controlled to correct the rotational angle position around the X and Y directions and the vertical axis. After this correction, the suction nozzle 17 is lowered and an electronic component is mounted at a predetermined position on the printed board P. Thereafter, the electronic components are sequentially mounted on the printed circuit board P.
[0026]
Next, a case where an electronic component is taken out from the second component supply device 4 will be described. In the case of a small pallet 12, a vertical partition member 26 is used as shown in FIG. A pallet 12 is stored.
[0027]
For example, when the electronic component having the mounting step number 0002 is stored in the second component supply device 4, the drawing operation of the pallet 12 storing the electronic component starts. That is, one elevator motor 38 is driven by a control device (not shown) to control the elevator operation of the corresponding elevator mechanism 22, and the levels of the grooves 25 and 27 of the pallet stocker 20 that stores the electronic component with the mounting step number 0002 are stored. The position and the level position of the chute 33 of the pallet introducing mechanism 21 are matched.
[0028]
Then, as shown in FIGS. 7 and 11, each pair of locking claws 34 is moved along the guides 35 so as to move away from each other by a driving source and locked to the hooks 29 of the pallet 12, and then driven by a driving mechanism. One drawer housing 32 (on the left in FIG. 11) is moved along the chute 33 (downward in FIG. 11) to introduce the predetermined pallet 12 into the pickup area of the electronic component. Therefore, the electronic component is picked up and taken out from the tray 11 on the pallet 12 by the suction nozzle 17 moved in the XY direction.
[0029]
At this time, the mounting head 6 moves to take out the electronic components to be mounted. However, the X-axis motor and the Y-axis motor are driven to move the XY stage 10 to move the mounting head 6, and the upper and lower motors are moved. By driving, the suction nozzle 17 is lowered to take out the electronic component from the tray 11 on the pallet 12 of the second component supply device 4.
[0030]
At this time, the suction nozzle 17 is raised by the vertical motor after the component suction, and the mounting head 7 moves to the upper position of the printed circuit board P, but stops at the upper position of the component recognition camera (not shown) during this movement, The component recognition camera captures an image of the electronic component sucked and held by the suction nozzle, and how much the electronic component is held by suction with respect to the suction nozzle 17 according to the XY direction and the rotation angle. The position is recognized.
[0031]
Then, the control device detects the X-axis motor, the Y-axis motor, and the θ-axis motor by the amount of the positional deviation of the printed circuit board by the substrate recognition processing unit and the positional deviation of the electronic component by the component recognition processing unit. Control is performed to correct the rotational angular position about the X and Y directions and the vertical axis. After this correction, the suction nozzle 17 is lowered and an electronic component is mounted at a predetermined position on the printed board P. Thereafter, the electronic components are sequentially mounted on the printed circuit board P.
[0032]
If the electronic component to be mounted next is not stored in the tray 11 on the extracted pallet 12 but is stored in the tray 11 on the pallet 12 in the pallet stocker 20, the driving mechanism After the drawer storage body 32 is moved forward to enter the pallet stocker 20, the pair of locking claws 34 are moved closer to each other to release the locking with the hook 29, and the pallet 12 is returned to the pallet stocker 20. Next, the drawer storage body 32 is moved backward while sliding on the chute 33. Next, as described above, as shown in FIG. 9, the elevator mechanism 22 is moved up and down by driving one of the lift motors 38, and the groove of the pallet 12 in the pallet stocker 20 that houses the next electronic component. 25 and 27 are matched with the level position of the chute 33, the drawer storage body 32 is advanced by the drive mechanism, the pair of locking claws 34 are moved away from each other, and the drawer storage is locked to the hook 29. The body 32 is moved backward, the pallet 12 is slid on the chute 33 and introduced into the pickup area, and the electronic components are sucked and taken out from the tray 11 by the suction nozzle 17. After the removal, the pallet 12 is returned to the pallet stocker 20 as described above.
[0033]
As described above, the suction nozzle 17 of the mounting head 6 picks up an electronic component from the first component supply device 3A, 3B, 3C or the second component supply device 4 according to the mounting data (not shown) one after another. Components are mounted on the printed circuit board P.
[0034]
When all the electronic components are mounted on the printed circuit board P, the electronic components are conveyed from the positioning unit 8 to the discharge conveyor 9 and then to the downstream apparatus.
[0035]
As described above, in the case of the small pallet 12, the pallet 12 is stored in each pallet stocker 20, and the pallet 12 that stores the predetermined electronic component by each pallet introduction mechanism 21 and each elevator mechanism 22 is electronic component. Is moved to a predetermined position in the pickup area. Therefore, in addition to the case where the two pallets 12 are pulled out individually as shown in FIG. 12, sometimes the two pallets 12 are pulled out simultaneously as shown in FIG. 13 in order to improve production efficiency.
[0036]
Next, as shown in FIG. 5, in the case of a large pallet 12, the large pallet 12 can be stored so as to straddle both the pallet stockers 20 by removing the vertical partition member 26. In this way, the component supply device 4 storing the large pallet 12 is installed in the apparatus main body 2 in place of the component supply device 4 storing the small pallet 12, and both the pallet introduction mechanism 21 and both the elevator mechanisms 22 are synchronized. By driving, the pallet 12 for storing the predetermined electronic component can be moved to a predetermined position in the pickup area of the electronic component.
[0037]
That is, the elevator device 22 is controlled by simultaneously driving both elevator motors 38 by a control device (not shown), and the level position of the groove 25 of the pallet stocker 20 storing predetermined electronic components and the introduction of both pallets are controlled. The level position of the chute 33 of the mechanism 21 is matched, and as shown in FIG. 14, the pair of locking claws 34 are moved away from each other by the drive source along the guides 35 so as to move the inner side of the large pallet 12. Next, the two drawer storage bodies 32 are moved along the chute 33 by the drive mechanism, and the predetermined pallet 12 is introduced into the pickup area of the electronic component (see FIG. 15). Therefore, the electronic component is picked up and taken out from the tray 11 on the pallet 12 by the suction nozzle 17 moved in the XY direction.
[0038]
In general, the tray 11 of the large pallet 12 stores electronic components larger than the electronic components stored in the tray 11 of the small pallet 12, but also when storing more electronic components of the same type. Applicable.
[0039]
Although the embodiments of the present invention have been described above, various alternatives, modifications, or variations can be made by those skilled in the art based on the above description, and the present invention is not limited to the various alternatives described above without departing from the spirit of the present invention. It includes examples, modifications or variations.
[0040]
【The invention's effect】
As described above, an object of the present invention is to improve the production efficiency by reducing the operation waiting time of the mounting device even when handling a plurality of types of electronic components stored in the tray.
[Brief description of the drawings]
FIG. 1 is a plan view of an electronic component mounting device in a state where two pallets are pulled out from a second component supply device.
FIG. 2 is a longitudinal side view of the electronic component mounting device in a state where two pallets are pulled out from the second component supply device.
FIG. 3 is a longitudinal front view of the electronic component mounting apparatus.
FIG. 4 is a front view of a pallet stocker in a state where a small pallet is stored and placed.
FIG. 5 is a front view of a pallet stocker in which a large pallet is stored and placed.
FIG. 6 is a side view of the second component supply device.
FIG. 7 is a plan view of a pallet stocker and the like in a state in which a small pallet is stored and mounted.
FIG. 8 is a plan view of a pallet stocker or the like in a state in which a large pallet is stored and placed.
FIG. 9 is a front view of an elevator mechanism when handling a small pallet.
FIG. 10 is a front view of an elevator mechanism when handling a large pallet.
FIG. 11 is a plan view of a pallet stocker and the like in a state in which a small pallet is stored and placed.
FIG. 12 is a plan view of a pallet stocker or the like in a state where a small pallet is stored and placed.
FIG. 13 is a plan view of a pallet stocker or the like in a state where a small pallet is stored and placed.
FIG. 14 is a plan view of a pallet stocker and the like in a state where a large pallet is stored and mounted.
FIG. 15 is a plan view of a pallet stocker or the like in a state where a large pallet is stored and placed.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Electronic component mounting apparatus 2 Apparatus main body 3A thru | or 3C 1st component supply apparatus 4 2nd component supply apparatus 6 Mounting head 11 Tray 12 Pallet 17 Adsorption nozzle 20 Pallet stocker 21 Pallet introduction mechanism 22 Elevator mechanism 25, 27 Groove 26 Vertical partition member 38 Lifting motor

Claims (2)

A mounting head that can be moved by a drive source in a direction along the beam is provided on a beam that can be moved in one direction by a drive source, and an electronic component is attracted to the mounting head and mounted on a printed circuit board that is transported by a substrate transport mechanism. In the electronic component mounting apparatus provided with the suction nozzle, two pallet stockers capable of storing pallets loaded with trays storing and arranging the electronic components in multiple stages, and pickup areas for the electronic components provided corresponding to each pallet stocker Two pallet introduction mechanisms for moving a pallet for storing a predetermined electronic component to a predetermined position, and each pallet for moving the pallet for storing the predetermined electronic component to a predetermined position in a pickup area of the electronic component. It consists of two elevator mechanisms for relatively aligning the stocker and each pallet introduction mechanism. In the case of a small pallet, an electronic component supply device is provided, and each pallet stocker stores a pallet, and each pallet introduction mechanism and each elevator mechanism stores the predetermined electronic component in a pickup area of the electronic component. In the case of a large pallet, the pallet is stored so as to straddle both pallet stockers, and the pallet for storing the predetermined electronic component by the both pallet introduction mechanism and the two elevator mechanisms is configured. An electronic component mounting apparatus configured to move to a predetermined position in a pickup area of an electronic component. The electronic component mounting apparatus according to claim 1, wherein a caster is provided at a lower portion of the electronic component supply device so that the caster is movable and is detachable from the apparatus main body.

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