JPH0754880B2 - Parts feeder - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a component feeding device that uses a cassette such as a tape containing a chip-type electronic component.

2. Description of the Related Art Conventionally, in a device for mounting a chip type electronic component represented by a leadless type resistor or a capacitor on a circuit board, the electronic components are attached to a tape in a line, and the electronic components are fed from a reel wound state. Are sequentially supplied one by one.

The reel is configured as a cassette integrally with a feeding mechanism. In this cassette, various different types of storage parts are arranged in a line on the carriage of the component feeder, and a large number of them are detachably mounted, and the carriage is moved in the cassette arranging direction.
An arbitrary cassette is made to correspond to the component receiving position of the component mounting device.

When parts of the cassette on the carriage are cut, the cassette is replaced manually. In this case, a cassette of the same type as the cassette in which the parts have been removed is selected from the shelves storing a large number of replacement cassettes and exchanged.

The cassette is fixed to the carriage by hand using a hand clamp provided on the carriage.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention Conventionally, as described above, it has been necessary to manually replace the cassette, and also to manually fix the cassette to the carriage. for that reason,
It is inefficient, and there is a problem that the operation rate of the component mounting apparatus is lowered due to the cassette replacement. Therefore, we considered a device that automatically replaces the cassette, but when the cassette is locked to the base, if a dedicated drive source is used for engaging and disengaging the lock, the structure becomes complicated and the control operation also becomes complicated. There is a problem.

An object of the present invention is to solve the above-mentioned conventional problems, and to provide a simple component feeding device having a structure capable of efficiently exchanging cassettes and holding the cassettes in a locked state.

Means for Solving the Problems The component feeding device of the present invention includes a main mounting table on which a plurality of cassettes containing components are mounted side by side, and a preliminary storage forming table on which a spare cassette to be transferred to the main mounting table is placed. Provided on the main mounting table is a cassette transfer device having a gripping means for gripping the cassette and a driving means for moving the gripping means up and down and moving back and forth. A lock claw engaging portion, and a lock claw provided on the cassette and capable of being engaged with and disengaged from the lock claw engaging portion in association with an attaching / detaching operation of the cassette to / from the main mounting table by the gripping means. It is a thing.

As described above, since the auxiliary storage forming table for placing the auxiliary cassette to be transferred to the main mounting table is provided and the cassette moving device for transferring the cassette from the preliminary storage forming table to the main mounting table is provided, the cassette can be efficiently used. Can be replaced automatically well. Also,
Since the main mounting table is provided with the lock claw engaging portion and the cassette is provided with the locking claw, the cassette can be held in the locked state on the main mounting table. In this case, since the holding means of the cassette transfer means causes the lock claws to be engaged and disengaged in accordance with the cassette attaching / detaching operation to / from the main mounting table, it is possible to mount the cassette on the main mounting table. It can be locked and unlocked automatically as it is taken out. Moreover, the lock engagement / disengagement operation does not require a dedicated drive means, and the structure is simple and the control is simple.

Embodiment An embodiment of the present invention will be described with reference to FIGS. 1 to 4. In FIG. 1, 1 is a component mounting device, and a component feeding device 2 is installed behind it. The component mounting apparatus 1 includes a component mounting head 5 on a gate-shaped frame portion 4 of a base 3,
An adhesive application head 6 is provided side by side, and an XY table 9 on which the two substrates 7 and 8 are placed is installed below the adhesive application head 6. The XY table 9 freely moves in the left-right direction (X direction) and the front-back direction (Y direction) of the base 3. Ten
Is a substrate loading guide, and 11 is a substrate unloading guide. The component mounting head 5 includes a component suction nozzle on a rotating frame 12 that horizontally rotates.
It has multiple 13 attached. Each component suction nozzle 13
Is connected to a suction device (not shown) by a pipe and is driven up and down by a lifting drive device 14.

The component feeding device 2 includes a main mounting table 16 on which a large number of cassettes 15 are mounted side by side in a row and a reciprocating drive device for moving the main mounting table 16 in the arrangement direction (Z-axis direction) of the cassettes 15 (Fig. (Not shown). Reference numeral 17 is a guide rail of the main mounting table 16. An empty space (not shown) in which the cassettes 15 can be placed is provided on the main mounting table 16 next to one or a plurality of cassettes 15 to be automatically replaced, or at the end of the main mounting table 16. Set up. At the rear of the main mounting table 16 near the reciprocating path, there is a cassette moving device 19 for arranging the preliminary storage forming table 18 of the cassette 15 and transferring the cassette 15 between the preliminary storage forming table 18 and the main mounting table 16. It is provided. The preliminary storage area forming table 18 is provided with one or a plurality of preliminary storage areas on which the cassettes 15 for transferring to the main mounting table 16 are placed. The main placing table 16 and the preliminary placing area forming table 18 are provided with engagement groove forming projections 41 extending in the longitudinal direction on the upper surfaces thereof, and lock claw engaging grooves 42 are formed on both side surfaces thereof.

As shown in FIGS. 2 and 3, the cassette 15 has a main reel 21 on which a component storage tape 20 is wound and a presser paper take-up reel 22 rotatably attached to a cassette frame 23, and the cassette frame 23 A feeding lever 24 is provided at the tip. The component storage tape 20 is one in which a large number of components 25 such as chip-type electronic components are stored in a line and covered with a holding paper 26. The feeding lever 24 is adapted to feed the component storage tape 20 one pitch at a time by rotating the component storage tape 20 downward, and is pushed downward by the cylinder device 27 provided on the rotary frame 12 of the component mounting head 5. . The presser paper 26 is wound around the presser paper take-up reel 22 at the guide piece 28 of the cassette frame 23, and the component 25 is exposed on the front end side of the cassette frame 23 relative to this. In addition, the rotating frame 12 is a component of the cassette 15.
There is provided a parts outage detection sensor 29 for detecting that 25 is gone.

At the lower part of the cassette frame 23, a pair of hook-shaped lock claws 43 that engage with the lock claw engagement grooves 42 provided in the main mounting table 16 and the preliminary storage field forming table 18 are provided. Lock claw 43
Is rotatably supported at the upper end around a horizontal support shaft 44, and is urged by a compression spring 45 in the closing direction, that is, the locking direction. An operating lever 46, which serves as a motion-transmitted portion, is integrally provided on the lock claw 43. Further, elongated chuck-shaped engaging holes 47 are provided on both sides of the upper portion of the cassette frame 23.

As shown in FIG. 3, the cassette moving device 19 includes an openable / closable chuck 36 that serves as a gripping means for the cassette 15, and
A drive means for moving the 36 in a three-dimensional direction, and a traverse body 38 that moves laterally along the traverse guide 37 of the preliminary storage forming table 18, and a front and rear guide 39 provided on the traverse body 38. And a front-rear moving body 40 that moves. The chuck 36 is attached to the front-rear moving body 40 so as to be able to move up and down. Illustration of the drive source in each direction is omitted. The chuck 36 grips the cassette frame 23 by engaging the chuck engagement hole 47 of the cassette frame 23 at its tip. A pushing member 48 is attached to the chuck 36 so as to project downward. The pushing member 48 is a cassette
It holds the lock pawl operating lever 46 of 15 and is attached so that it can be pulled upward with respect to the chuck 36.
The compression spring 49 having a spring constant stronger than that of the compression spring 45 of FIG.

The outline of the operation of the component mounting apparatus 1 will be described. XY table 9
An adhesive is applied to the substrate 7 on the right side of FIG. 1 by the adhesive application head 6 at each component mounting position. XY table 9
The substrate 8 on the left side in FIG. 1 above is the one that has been shifted from the right side on the XY table after the adhesive application has been completed, and the component 25 is mounted by the component mounting head 5. The component mounting head 5 is
The components 25 of the cassette 15 are sequentially sucked by the component suction nozzles 13 of the rotary frame 12 to be carried on the substrate 8 and pressed to be mounted. One or a plurality of various kinds of components 25 are mounted on the board 8. At this time, components 25 of the same type are successively taken out from the same cassette 15 and mounted. When changing the type of the component 25, the main mounting table 16 is moved so that the cassette 15 accommodating the component 25 of that type is loaded into the component mounting apparatus 1
It corresponds to the suction nozzle 13 at the component receiving position N (FIG. 2).

A cassette exchange method will be described. The remaining amount of each cassette 15 on the main mounting table 16 is detected by a detecting means such as a counter or by visually observing the tape diameter, and a cassette 15 of the same kind as the cassette 15 that is likely to run out of parts is formed as a preliminary storage forming table. 18
Be prepared for. Then, when the component mounting apparatus 1 finishes mounting the components on the circuit board 8 and replaces the substrate 8 or when the components of the cassette 15 on the main mounting table 16 are exhausted, the chuck 36 of the cassette transfer device 19 causes the preliminary storage space. The cassette 15 of the forming table 18 is gripped and transferred to an empty space on the main mounting table 16. At this time, the main mounting table 16 is moved to a position where the empty space matches the cassette 15 of the preliminary storage space forming base 18 and stopped. Also, like the transfer of this cassette 15,
The cassette 15, which has no components on the main mounting table 16, is grasped by the chuck 36 at an appropriate time and taken out to the preliminary mounting table forming table 18.

Locking and unlocking when transferring the cassette 15 are performed as follows. In the cassette 15 placed on the main mounting table 16, as shown in FIG. 4 (A), the lock claw 43 of the cassette 15 is engaged with the lock claw engaging groove 42 of the main mounting table 16 and the compression spring 45 is attached. Locked by power. When the chuck 36 descends to grip the cassette 15 (FIG. 4 (B)), the pushing member 48 attached to the chuck 36 pushes the lock claw operating lever 46 of the cassette 15 along with this descending.
Therefore, the lock claw 43 is opened and disengaged from the lock claw engagement groove 42. At this time, the chuck 36 engages with the chuck engagement hole 47 of the cassette frame 23 to grip the cassette frame 23. When the chuck 36 lifts the cassette 15 (FIG. 4 (C)), the pushing member 48 keeps pushing the lock pawl operating lever 46, and the cassette 15 is carried with the lock pawl 43 open. When the cassette 15 is carried to the preliminary storage forming table 18 and the chuck 36 is opened and the chuck 36 is lifted, the pressing of the lock claw operating lever 46 by the pressing member 48 is released, and the lock claw 43 is urged by the compression spring 45. It closes and engages with the lock claw engagement groove 42. Therefore, the cassette 15 is locked on the preliminary storage forming table 18. The same applies to the case of transferring from the preliminary storage table 18 to the main mounting table 16.

In this way, the cassette 15 is exchanged, but a preliminary storage area forming table 18 for placing the auxiliary cassette 15 to be transferred to the main mounting table 16 is provided, and from this preliminary storage area forming table 18, the main mounting table 18 is provided.
Since the cassette transfer device 19 for transferring the cassette 15 to the 16 is provided, the cassette 15 can be efficiently and automatically replaced. Further, since the lock claw engagement groove 42 is provided in the main mounting table 16 and the preliminary storage forming table 18, and the lock claw 43 is provided in each cassette 15,
The cassette 15 can be held in a locked state on the main mounting table 16 and the preliminary mounting table forming table 18. In this case, the cassette moving device 19
The chuck 36 is provided with a pushing member 48 for pushing down the lock claw operating lever 46, and the lock claw 43 and the lock claw engaging groove 42 are engaged and disengaged by the push member 48 as the chuck 36 is moved up and down. Therefore, the lock and the unlock can be automatically performed when the cassette 15 is placed on the main placing table 16 and taken out. Moreover, the lock engagement / disengagement operation does not require a dedicated drive means, and the structure is simple and the control is simple.

Although the lock claw engagement groove 42 is also provided in the preliminary storage area forming base 18 in the above-described embodiment, the cassette 15 may not necessarily be locked in the preliminary storage area forming base 18. Alternatively, the two lock claw engagement grooves 42 may be directed inward with respect to each other, and the lock claws 43 may be opened outward to engage with the lock claw engagement grooves 42. Furthermore, the lock claw engaging portion is not limited to the groove 42 of the above-described embodiment, but may be a protrusion or a hole. Further, the lock claw 43 is not limited to a rotatable one, but may be one that moves straight ahead horizontally. In that case, there is provided a moving direction changing means such as a cam or a gear which is pushed by the lowering of the pushing member 48 to cause the lock claw to move horizontally. Further, although the pressing member 48 is provided in the above-described embodiment, the chuck 36 may directly contact the lock claw operating lever 46 to rotate.

EFFECTS OF THE INVENTION The component feeding device of the present invention has an effect that cassettes can be efficiently exchanged, the cassettes can be held in a locked state, and a drive source dedicated to locking / unlocking is unnecessary, and the structure is simple.

[Brief description of drawings]

FIG. 1 is a perspective view showing a combined state with a component mounting apparatus according to an embodiment of the present invention, FIG. 2 is a side view thereof, FIG. 3 is a partially enlarged perspective view of the same, and FIG. It is a figure. 1 ... Component mounting device, 2 ... Component feeding device, 3 ... Base, 5 ...
Component mounting head, 7, 8 ... Substrate, 15 ... Cassette, 16 ... Main mounting table, 17 ... Guide rail, 18 ... Preliminary storage forming table, 19 ... Cassette transfer device, 36 ... Chuck (grasping means), 42 ... Lock claw Engagement groove, 43 ... Lock claw, 45 ... Compression spring, 46 ... Lock claw operating lever, 48 ... Pushing member

Claims (2)

[Claims] 1. A main mounting table on which a plurality of cassettes containing parts are arranged side by side, a preliminary storage forming table on which a spare cassette to be transferred to the main mounting table is placed, a gripping means for gripping the cassette, and a gripping means. A cassette transfer device that has a drive means for moving up and down and advancing and retracting the cassette of the preliminary storage space forming table on the main mounting table by the gripping means, a lock claw engaging portion provided on the main mounting table, and the cassette. And a lock claw that is engageable with and disengageable from the lock claw engaging portion in association with the operation of attaching and detaching the cassette to and from the main mounting table by the gripping means. 2. A pressing member attached to the gripping means, which comes into contact with a motion-transmitted portion of the lock pawl to unlock the lock pawl as the gripping means moves up and down. Item feeder as described in the item.