JPH118493A - Component-supply device in electronic-component packaging apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a component-supply device in an electronic-component packaging apparatus, which introduces a pallet to a pickup position, with a simple structure and simple control. SOLUTION: This component-supply device comprises a pallet containing means 21 containing a pallet P, and a pallet introduction means 22 for pulling out the pallet P to the pickup position. The pallet introduction means 22 has an engaging arm 51 which engages/removes with/from the pallet P, an arm-operating mechanism 42 which engages/removes the engaging arm 51 with/from the pallet P, and a drive means 43 for moving them forwards/backwards in a pulling direction. The arm-operating mechanism 42 has an arm support block 53 which engageably/removably supports the engaging arm 51, a mechanism main body 54 which reciprocally supports the arm support block 53 and is moved forwards/backwards by the drive means 43, a stopper 44 which allows the overrun of the mechanism main body 54 in a state where the engaging arm 51 reaches an engaging position of the pallet P, and which stops the forward movement of the arm support block 53, and an operating member 65 which engages/removes the engaging arm 51, in accordance with the forward/backward movement of an overrun portion of the mechanism main body 54.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a component supply device in a multi-function electronic component mounting device for supplying electronic components via a pallet.

[0002]

2. Description of the Related Art Conventionally, as this kind of component supply device, a large number of electronic components are arranged and arranged on a tray, and one or more trays are mounted on a pallet. By facing the pickup position,
Electronic components can be directly or indirectly attached to the device body
No. 257896) is known. Such a component supply device mainly supplies a relatively large electronic component such as a multi-lead component, and stocks a plurality of pallets mounted with trays and adjusts a desired pallet to the level of a drawing path. An elevator mechanism for raising and lowering, and a pallet introduction mechanism for extracting a pallet from the elevator mechanism to a pickup position along an extraction path are provided.

The pallet introduction mechanism is provided with a locking arm which is turned from above on the front edge of the pallet to lock the pallet, and a solenoid for engaging and disengaging the locking arm with respect to the pallet. A unit and a moving device for moving the locking arm unit back and forth along a drawing path using a motor as a drive source. The operation of pulling out the pallet from the elevator mechanism is as follows. First, the moving device is driven to advance the locking arm and the solenoid, and when the locking arm reaches the pallet, it is stopped, and then the solenoid is excited (or demagnetized). The pallet is locked by rotating the locking arm. In this state, the locking arm and the solenoid are retracted, and the pallet is pulled out to the pickup position. When returning a used pallet to the elevator mechanism, the procedure is completely reversed.

[0004]

In such a conventional component supply apparatus, the pallet introduction mechanism requires two actuators (drive sources), a motor of a moving device and a solenoid of a locking arm unit. There was a problem that the structure became complicated. Also, this motor and solenoid
There is a problem that the control is complicated because they are driven in conjunction with each other.

An object of the present invention is to provide a component supply device in an electronic component mounting device that can introduce a pallet to a pickup position with a simple structure and simple control.

[0006]

According to another aspect of the present invention, there is provided a component supply apparatus for controlling a pallet storing means for storing a pallet on which a large number of electronic components are mounted via a tray, and a pallet in the pallet storing means moving forward. A pallet introducing means for stopping and retracting the pallet from the pallet accommodating means to the pick-up position of the electronic component. A locking arm, an arm operating mechanism for engaging and disengaging the locking arm, and a driving means for moving the locking arm and the arm operating mechanism back and forth in the pull-out direction. The arm operating mechanism is capable of engaging and disengaging the locking arm. Arm support block that supports the arm support block, and a mechanism that supports the arm support block so as to be able to advance and retreat in the pull-out direction and is advanced and retracted by driving means. And a stopper that allows the mechanism body to overrun and stops the advancement of the arm support block when the advancing locking arm reaches the locking position of the pallet, and an overrun of the mechanism body fixed to the mechanism body. And an actuating member for engaging and disengaging the locking arm as the part advances and retreats.

According to this configuration, when the locking arm and the arm operating mechanism are advanced toward the pallet accommodating means by the driving means, the stopper prevents the arm support block from advancing, and only the mechanism main body is overrun. To move forward. At this time, the operating member that moves forward with the mechanism main body causes the locking arm stopped at the locking position to perform the lock release operation. Here, when the used pallet is locked by the locking arm, this operation returns the pallet to the pallet storage means. Next, when the operation proceeds to the retreat operation, as the mechanism body retreats, the operating member is caused to lock the locking arm stopped at the locking position. Further, when the mechanism body continues retreating, the locking arm also starts retreating, and the pallet is pulled out. That is, the locking arm can be engaged and disengaged by using the driving means for pulling out (advancing and retracting) the pallet. Therefore, a power source for engaging and disengaging the locking arm can be omitted.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an electronic component mounting apparatus according to an embodiment of the present invention; This electronic component mounting device
It is a so-called multifunctional chip mounter, and is configured to mount various electronic components such as surface mount components such as chip capacitors and chip resistors, and multi-lead components such as flat pack ICs. FIG. 1 is a plan view of an electronic component mounting device. As shown in FIG. 1, the electronic component mounting device 1 includes a device main body 2 for mounting a supplied electronic component on a substrate.
A first component supply device 3 for supplying a small electronic component such as a surface mount component to the device main body 2, and a second component supply device 4 for supplying a large electronic component such as a multi-lead component to the mounting device main body 2. ing.

The apparatus main body 2 includes a machine base 5, a board transport mechanism 6 having a set table 7 in the center of the machine base 5, a head unit 8 on which two mounting heads 9 and a board recognition camera 10 are mounted, An XY stage 11 for moving the head unit 8 in the XY directions. XY stage 11
, The mounting head 9 faces the first component supply device 3 or the second component supply device 4 to pick up an electronic component, and further mounts the electronic component on a board set on the set table 7. When the mounting of the electronic components on the board is completed by repeating this operation, the board is sent out on the transfer path 12 by the board transfer mechanism 6, and a new board is introduced into the set table 7 instead. .

The first component supply device 3 has a large number of cassette-type tape feeders 13 arranged side by side. The leading end of the component supply side is located on one side of the machine base 5 parallel to the transport path 12. It is arranged so as to face, that is, to face the pickup position of the mounting head 9. Each of the tape feeders 13 accommodates electronic components in a state of being loaded on a carrier tape (not shown), and the electronic components are supplied one by one from the leading end of the tape feeder 13.

The second component supply device 4 is disposed on another side of the machine base 5 facing the first component supply device 3 at right angles to one side of the machine base 5. In the second component supply device 4, a large number of electronic components are arranged and arranged on a tray T, and one or a plurality of the trays T are mounted on a pallet P. The electronic component is supplied to the mounting apparatus main body 2 by facing the pickup position between the electronic device and the set table 7.

On the other hand, at the lower end of each mounting head 9, a suction nozzle 14 for sucking an electronic component is detachably mounted. A plurality of types of suction nozzles 14 are prepared, and can be replaced as appropriate according to the planar shape and weight of the electronic component. In this case, the suction nozzle 14 for replacement is housed in a nozzle stocker 15 arranged on the upper surface of the machine base 5. A plurality of types of suction nozzles 14 to be used are set in the nozzle stocker 15 side by side.

In the vicinity of the nozzle stocker 15, a component recognition camera 16 for recognizing the position of the electronic component sucked by the suction nozzle 14 is provided. Before the electronic component sucked by the suction nozzle 14 is mounted on the substrate, the component recognizing camera 16 uses the component recognition camera 16 to reduce the positional deviation amount in the X direction, the Y direction, and the θ direction (the rotation angle in the horizontal plane) with respect to the axis of the suction nozzle 14. Is detected. Then, based on the detection result, the position shift in the θ direction is corrected by the rotation of the suction nozzle 14, and the position shift in the X direction and the Y direction is corrected by the XY stage 11.

Next, the second component supply device 4 will be described in detail with reference to FIGS. The second component supply device 4 stocks a large number of pallets P, and vertically transports the pallets P to a predetermined level position (pallet accommodating means) 21; And a pallet introduction mechanism (pallet introduction means) 22 for transporting the pallet to the second pickup position in the horizontal direction.

The elevator mechanism 21 has a large number of pallets P
And a lifting mechanism 32 that lifts and lowers each pallet P via the pallet stocker 31. The pallet stocker 31 is configured by arranging a number of shelves 33 on which pallets P are placed in a vertical direction. The right side in the figure of the pallet stocker 31 is widely opened, and the pallet P is drawn out to the apparatus main body 2 side from this portion.

The lifting mechanism 32 includes a frame (not shown) that holds the pallet stocker 31, a ball screw 34 that is screwed onto a part of the frame and lifts the frame, It comprises a pair of left and right guide rails 35 for guiding the movement, and an elevating motor 36 connected to the base end of the ball screw 34 and rotating the same. When the ball screw 34 rotates forward / reverse via the elevating motor 36, the frame is moved to the guide rails 35
Guided to go up and down. When the frame moves up and down, the pallet stocker 31 held by the frame moves up and down with the pallet P stored therein.

The elevator mechanism 21 configured as described above
The lifting motor 36 of the lifting mechanism 32 is connected to the controller 23, and the lifting operation is controlled by the controller 23. In the elevating operation, the desired level positions of the two shelf members 33 of the pallet stocker 31 and the level positions of the two upper and lower draw-out paths 41a and 41b of the pallet introduction mechanism 22 described later match. However, the arrangement interval of each shelf member 33 is two drawer passages 4
It is set so as to be substantially the same as the arrangement interval of 1a and 41b.

On the other hand, the pallet introduction mechanism 22 matches the two extraction paths 41a and 41b and
The pallets P that have been placed on standby at 1
It is selectively pulled out along 1a and 41b and introduced into the pickup position. This pallet introduction mechanism 22
Is composed of a locking arm unit 42 for locking the pallet P facing the elevator mechanism 21 and a drive mechanism 43 for moving the locking arm unit 42 forward and backward along the extraction paths 41a and 41b. The drive mechanism 43 is also connected to the controller 23, and the elevator mechanism 2
It is linked with 1.

Here, before explaining the locking arm unit 42 and the driving mechanism 43, referring to FIG.
The use of the two drawer paths 41a and 41b will be briefly described. As shown in FIG.
1a and 41b, the upper withdrawal path 41a is at the position of "level 1", and the lower withdrawal path 41b is at "level 2".
, And the elevator mechanism 21 is
The pallet P is appropriately positioned at the position of “level 1” or “level 2”. Then, on the pallet P, the pallet P on which the low-profile thin tray Ta is set is supplied from “level 1”, and the pallet P on which the high-profile thick tray Tb is set is supplied from “level 2”. .

As described above, since the short tray Ta is introduced into "level 1" and the high tray Tb is introduced into "level 2," the level of the top surface of the tray T at the pickup position is set. Is not affected by the height of the tray T, and the level difference d is small. For this reason, regardless of the height of the tray T, according to the highest level of the top surface of the trays T introduced at the pickup position,
What is necessary is just to set the movement reference level of the mounting head 9. That is, the descending (rising) stroke of the mounting head 9 in the pickup operation is minimized. In this case, the determination as to “level 1” or “level 2” is made by a height detection sensor (not shown) or a controller 2 (not shown).
3 is performed by processing data that has been input in advance.

As shown in FIGS. 4 and 5, the locking arm unit 42 has a locking arm 51 composed of a pair of arm pieces 52, 52 and a pair of arm pieces 52, 52 rotatably. It is composed of an arm support block 53 for supporting, and a unit main body 54 for supporting the arm support block 53 so as to be able to advance and retreat in the drawing direction. Both arm pieces 5
The reference numerals 2 and 52 are formed substantially in the shape of the letter "L" and are disposed symmetrically with respect to each other, and rotate in mutually opposite directions about the bent portion in the horizontal plane. Further, a circular protrusion 55 is provided at the tail end of each arm piece 52 so as to protrude therefrom.
An operating member 65 of the unit main body 54, which will be described later, comes into contact with the circular projection 55 to rotate the arm piece 52. Further, although schematically shown in the drawing, a compression spring 56 is stretched between both arms 52, 52,
The two arm pieces 52, 52 are urged in the leg opening direction, that is, the locking direction. The pivot shaft 57 of each arm 52 penetrates the arm support block 53 in the vertical direction, and its lower end abuts a part of the arm support block 53 to open the arm in the leg opening direction. A regulating disk 58 that regulates the position of the rotating end of the disc is attached.

A pin-shaped first locking portion 59 protruding upward and a pin-shaped second locking portion 60 protruding downward are provided at the distal end of each arm piece 52, respectively. Installed. The first locking portion 59 and the second locking portion 60 are disposed in the horizontal plane so as to be slightly displaced from each other in the rotation direction. The locking portion 59 is locked with priority to the second locking portion 60. Specifically, each arm piece 52 is disposed so as to face the gap of the pallet P waiting at the above-mentioned “level 1” and “level 2”, and the first locking portion 59 is at “level 1”. The waiting pallet P is locked, and the second locking portion 60 locks the pallet P waiting “level 2”.

Therefore, when the pallets P are on standby at "level 1" and "level 2", respectively, when the two arm pieces 52, 52 are locked (spreading operation), the first operation is performed.
The locking portion 59 locks the “level 1” pallet P,
The second locking portion 60 cannot lock the “level 2” pallet P, and maintains the unlocked state. of course,
The same applies to a state where the pallet P is waiting only at “level 1”. Palette P only for "Level 2"
Is in a standby state, the second locking portion 60 locks the “level 2” pallet P (see FIG. 6). That is,
The locking arm 51 locks the upper pallet P (“level 1”) so as to be preferentially pulled out.

As described above, since the upper first locking portion 59 and the lower second locking portion 60 are provided so as to be displaced in the rotation direction, the single locking arm 51 allows The upper and lower pallets P can be selectively locked by giving priority to the upper pallets P. That is, the upper pallet P can be pulled out with a simple structure and mechanically by priority.

On the other hand, the locking receiving portion Pa of each pallet P
The pallet P is formed by cutting a horizontal edge Pb of the pallet P in a “C” shape. The two arm pieces 52, 52 perform locking and unlocking operations with respect to the lock receiving portion Pa in a state facing the inside of the lock receiving portion Pa. Therefore, the locking arm 51
Is in the unlocked state, each pallet P can be moved in the vertical direction without having to retract it. For example, the used pallet P is transferred to the elevator mechanism 2
After returning to 1 and unlocking, if a new pallet P faces this, this pallet P can be instantly locked.

An arm support block 53 for supporting the locking arm 51 is slidably engaged with a rail portion 63 of a unit body 54 described later by a slide portion 61 formed at a lower portion. Further, the pair of left and right stoppers 44, 44 abut on the arm support block 53 when the locking arm 51 advances to the locking position.

The unit body 54 includes an intermediate base 62.
A rail 63 protruding from the base 62;
2 and a slider 64 attached to the lower side. The slider 64 is engaged with a center rail 71 of the drive mechanism 43 described later, and the unit main body 54 is guided by the center rail 71 to advance and retreat in the direction in which the pallet P is pulled out. A pair of left and right operating members 65, 65 are fixed to the upper surface of the base 62, and the pair of operating members 65, 65 are connected to the pair of arm pieces (the circular protrusions 5).
5) By contacting each of 52 and 52, the locking arm 51 against the compression spring 56 performs the unlocking operation.

Here, a series of locking and unlocking operations of the locking arm unit 42 will be described with reference to FIG. In order to return the used pallet P to the elevator mechanism 21 by the drive mechanism 43, the locking arm unit 42
Moves forward on the center rail 71, the locking arm 51 reaches the locking position, that is, the pallet P
Is stored in the elevator mechanism 21, the arm support block 53 hits the stopper P. However, the unit body 54 advances further so as to overrun. Then, the operating member 65 of the unit main body 54 hits against the arm piece 52 and presses it. The pressing of the operating member 65 causes the locking arm 51 to release the locking against the compression spring 56 to release the used pallet P (see FIG. 13B).

Here, the elevator mechanism 21 is driven,
The new pallet P faces the locking arm 51. Subsequently, the overrunning unit main body 54 starts retreating. Accordingly, the operation member 65 is retracted in the reverse procedure, and the locking arm 51 is locked by the compression spring 56 (see FIG. 7A). Locking arm 51 is pallet P
Is substantially simultaneously with the sliding portion 61 of the arm support block 53 at the stopper portion of the unit main body 54.
, The arm support block 53 moves backward together with the unit body 54. In this manner, the locking arm 51 is disengaged from the pallet P, and the pallet P is exchanged.

As described above, the engaging and disengaging operation of the locking arm 51 can be performed using the driving mechanism 43 as a power source. That is, a dedicated actuator for engaging and disengaging the locking arm 51 is not required, and the structure can be simplified.
And cost can be reduced.

Next, the driving mechanism 43 will be described with reference to FIG. As shown in the figure, the driving mechanism 43 includes a center rail 71 that supports the locking arm unit 42 so as to be able to move forward and backward, a driving motor 72 that moves the locking arm unit 42 back and forth along the center rail 71, and a driving motor 72. And a timing belt 73 for transmitting the rotational power of the rotation to the locking arm unit 42. Timing belt 7
Reference numeral 3 denotes a pair of driven pulleys 74, 74 which are disposed apart from each other in the pull-out direction of the pallet P, a driving pulley 75 attached to the main shaft of the driving motor 72, and disposed between the driven pulley 74 and the driving pulley 75. A pair of intermediate pulleys 76, 7
6 and it is hung. In addition, the timing belt 7
The side of the unit body 54 of the locking arm unit 42 is fixed to 3, and the locking arm unit 42 advances and retreats when the timing belt 73 travels forward and backward.

The drive motor 72 is constituted by a stepping motor, and its drive is controlled by the controller 23 described above. In this case, the controller 23 controls the drive motor 72 to move the locking arm unit 42 forward and backward at a constant speed, but in the above-mentioned overrun portion, slows down the moving of the locking arm unit 42. The position where the locking arm 51 is locked and the position where the unit body 54 finally stops due to overrun are detected by a sensor or switch (not shown), and upon receiving this detection signal, the controller 23 controls the drive motor 72. Slow down. For this reason,
The locking and unlocking operations of the locking arm 51 are performed very slowly. This deceleration may be stepwise or acceleration. Further, the speed may be reduced only during the locking operation.

By performing such control, both the arm pieces 52, 52 hit the locking receiving portion Pa of the pallet P during the locking operation of the locking arm 51, but the impact becomes extremely small, and the pallet There is no problem such as the electronic components mounted on the P jumping out of the accommodation groove of the tray T. Further, since the two arm pieces 52 and 52 themselves hit the pallet P from the horizontal direction, it is possible to suppress the electronic component from jumping out also in this regard. Further, since the locking force of the two arm pieces 52, 52 acts in the opposite direction and is canceled out, the pallet P is not moved by the arm piece 52, and in this regard, the jumping out of the electronic component can be suppressed.

Contrary to the above-described embodiment, it is also possible to cause the locking arm to perform the locking operation by closing the legs and to perform the unlocking operation by opening the legs. In such a case, the lock receiving portion of the pallet is cut out at two positions on the left and right in a “C” shape so that a convex portion is formed at the center of the horizontal edge.

[0035]

As described above, according to the component supply apparatus of the present invention, the engaging and disengaging operation of the locking arm can be performed by the driving means for moving the locking arm forward and backward. A dedicated power source can be omitted, the configuration and control of the apparatus can be simplified, and the cost of the apparatus can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view of an electronic component mounting device equipped with a component supply device according to an embodiment of the present invention.

FIG. 2 is a side view of a second component supply device according to the embodiment.

FIG. 3 is an explanatory diagram for explaining the proper use of “level 1” and “level 2”.

FIG. 4 is a plan view around a locking arm unit of the pallet introduction mechanism.

FIG. 5 is a side view around a locking arm unit of the pallet introduction mechanism.

FIG. 6 is an operation explanatory diagram illustrating the locking and unlocking operations of the locking arm.

FIG. 7 is a plan view of a pallet introduction mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electronic component mounting apparatus 2 Device main body 4 2nd component supply apparatus 9 Mounting head 21 Elevator mechanism 22 Pallet introduction mechanism 23 Controller 41 Extraction path 42 Locking arm unit 43 Drive mechanism 44 Stopper 51 Locking arm 53 Arm support block 54 Unit main body 65 Operating member 72 Drive motor T Tray P Pallet

Claims (1)

[Claims] A pallet housing means for housing a pallet on which a large number of electronic components are mounted via a tray;
A pallet introducing device for retracting the pallet from the pallet accommodating device to the electronic component pickup position, wherein the pallet introducing device is configured to be detachable from the pallet. A locking arm, an arm operating mechanism for engaging and disengaging the locking arm, and driving means for moving the locking arm and the arm operating mechanism forward and backward in the pull-out direction. An arm support block for removably supporting the arm, a mechanism body for supporting the arm support block so as to be able to advance and retreat in the drawing direction, and being advanced and retracted by the driving means; Position, the mechanism body is allowed to overrun, and Electronic component mounting, comprising: a stopper for stopping the mechanism; and an operating member fixed to the mechanism main body and engaging and disengaging the locking arm with advance and retreat in an overrun portion of the mechanism main body. Parts supply device in equipment.