JPS61121399A - Part feeder - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a component feeding device using a cassette such as a tape containing chip-type electronic components.

Conventional technology Conventionally, in devices for mounting chip-type electronic components such as leadless resistors and capacitors onto circuit boards,
Electronic components are attached to a tape in a line, and the tape is unwound from a reel while the electronic components are sequentially supplied 1111 at a time.

The reel is integrated with a feeding mechanism and configured as a cassette. In this cassette, a large number of different stored parts are lined up in rows on the carriage of the parts feeder and are loaded in a detachable manner, and the carriage is moved in the direction in which the cassettes are lined up. To the receiving position χ
1.

If a part of the cassette on the carriage breaks, the cassette must be replaced manually. At this moment, from a shelf containing many replacement cassettes, a cassette of the same type as the cassette whose part is missing is selected and replaced.

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

Problems to be Solved by the Invention Conventionally, as described above, cassettes had to be replaced manually, and the cassettes had to be fixed manually to the carriage. Therefore,
There is a problem in that the operation rate of the component mounting device decreases due to inefficiency and cassette negotiation. Therefore, we thought of a device that automatically exchanges cassettes, but when locking a cassette to a stand, using a special drive mechanism to engage and release the lock would complicate the structure and make the control operations complicated. There is a problem with becoming.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems, and to provide a simple component feeding device that allows efficient cassette exchange and holds the cassette in a locked state.

Means for Solving the Problems The parts feeding device of the present invention has a main loading table on which a plurality of cassettes containing parts are placed side by side, and a preliminary storage area forming table on which spare cassettes to be transferred to the loading table are placed. , a cassette transfer device having a gripping means for gripping the cassette and a driving means for raising/lowering and advancing/retracting the gripping means, and for loading the cassette of the preliminary storage space forming table onto the main mounting table by the gripping means; or a lock claw engaging portion provided on either one of the cassettes and a lock claw engaging portion provided on the other side so as to be freely engageable and detachable, and interlocked with the attachment/detachment operation of the cassette to/from the main mounting base by the gripping means. It is equipped with a lock pawl that engages and disengages.

In this way, we have provided a preliminary storage area forming table for placing spare cassettes to be transferred to the main loading table, and also provided a cassette transfer device to transfer the cassettes from this preliminary storage area forming table to the main battle FF platform, so we can efficiently transfer cassettes. Can be replaced automatically. In addition, since a lock claw engaging portion is provided on either the main mounting table or the cassette, and a lock claw is provided on the other, the cassette can be
It can be held on the floor in a locked state on the F platform. In this case, the holding means of the cassette transfer means engages and disengages the lock pawl as the cassette is attached to and detached from the main Jlli mounting base, so that the cassette is not easily placed on the main Jlli mounting base. It can also be automatically locked and unlocked when removed. Moreover, the structure is simple, and the control tall is for use only in parts, which requires a dedicated drive means for locking and disengaging operations.

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 S1, and a component feeding device 2 is installed behind it, and a component mounting device 21 is used for applying adhesive to a gate-shaped frame 4 of a base 3. A RAD 5 and a component mounting head 6 are arranged side by side, and an XY table 9 on which two boards 7.8 are placed is installed below them.

The XY table 9 is freely movable in the left-right direction (X direction) and the front-back direction (Y direction) of the base 3. ,1
0 is a board carrying-in guide, and It is a holding plate carrying-out guide. The component mounting head 5 has a plurality of component suction nozzles 13 attached to a rotating frame 12 that rotates horizontally. Each component suction nozzle 13 is pipe-connected to a suction device (not shown), and is moved up and down by a lifting drive 1 device 14.

The component feeding device 2 includes a reciprocally movable main mounting table 16 on which a large number of cassettes 15 are placed in a line, and a reciprocating drive device (see FIG. (not shown) and No/Ranaru. 17 is the main mounting stand I
6 chi) rail. Note that the main mounting table 16 is equipped with one or more cassettes 15 to be automatically exchanged.
A device field (not shown) in which the cassette 15 can be placed is provided next to the cassette 15 or at the end of the main stand. A cassette transfer unit 18 for cassettes 15 is placed near and behind the reciprocating path of the main J4 holder 16, and cassettes 7)+5 are transferred between the auxiliary holder 18 and the main holder 16. A device 19 is provided. The preliminary storage area forming table 18 is provided with storage areas for placing cassettes 15 for transfer to the main loading table I6. The main mounting table 16 and the preliminary storage space forming table 18 are each provided with an engagement groove forming protrusion 41 extending in the longitudinal direction on the upper surface thereof, and lock claw engagement a42 is formed on both sides thereof.

As shown in FIGS. 2 and 3, the cassette 15 has a main reel 21 wound with a component storage tape 20 and a presser paper take-up reel 22 rotatably attached to a cassette frame 23. A feeding lever 24 is provided at the tip. The component storage channel 120 stores a large number of components 25 such as chip-type electronic components in a line and covers them with a presser paper 26. The feeding lever 24 feeds out the parts storage tape 20 one pitch at a time by rotating downward, and is pushed downward by the cylinder device 27 provided on the rotating frame 12 of the rad 5 for mounting the parts. It will be done. 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 at the tip of the cassette frame 23 from this point. Note that the rotary frame 12 has a component runout detection device 72 for detecting when the component 15 in the cassette/cassette 15 has run out.
This is a provision.

At the bottom of the cassette frame 23, the main a? A pair of hook-shaped openings and claws 43 are provided which engage with lock claw engaging grooves 42 provided in the l+6 and the preliminary storage space forming base 18. The lock pawl 43 is rotatably supported at its upper end around a horizontal support shaft 44, and is biased by a compression spring 45 in the closing direction, that is, in the locking direction. An operating lever 46 serving as an operation-transmitted portion is integrally extended to the lock claw 43 .

Also, both upper fI of the cassette frame 23! An elongated chuck engagement hole 47 is provided at ll.

The cassette transfer device 19, as shown in FIG.
5, a chuck 36 that can be opened and closed, and a drive means that moves this chuck 36 in a three-dimensional direction. and a longitudinally moving body 40 that moves along a longitudinal guide 39 provided on the third day of the transverse body.

The chuck 36 is attached to the back-and-forth movable body 40 so as to be movable up and down. Driving sources in each direction are not shown. The tip of the chuck holder 36 engages with the chuck engagement hole 47 of the cassette frame 23 to hold the cassette frame 23 therebetween. A push member 48 is attached to the chuck 36 and projects downward. The pushing member 48 is for holding down the lock pawl operating lever 46 of the cassette 15, and is attached to the chuck 36 so that it can be pulled upward, and is pushed downward by a compression spring 49 having a spring constant stronger than the compression spring 45 of the lock pawl 43. It is a protruding bias.

An outline of the operation of the component mounting device 1 will be explained. Adhesive is applied to the substrate 7 on the right side of FIG. 1 on the XY table 9 using the adhesive application head 6 for each component mounting position.The substrate 8 on the left side of FIG. It was shifted from the right side on the XY table after the agent was applied.
A component 25 is mounted by the component mounting head 5. The component mounting head 5 is operated by each component suction nozzle 13 of the rotating frame 12.
The parts 25 of the cassette 15 are sequentially suctioned, carried onto the board 8, and mounted by pressing. On the board 8, many types of parts 25 are each 1 or '1iLL! i individual package a 11. At the same time, parts 25 of the same type are successively taken out from the same cassette 15 and mounted. When changing the type of part 25, move the main a holder 16 and change the type of part 25.
The cassette 15 containing the components is made to correspond to the suction nozzle 13 at the component receiving position N (FIG. 2) of the component mounting device I.

Explain how to replace the cassette. The remaining parts of each cassette 15 on the main mounting table 16 is detected by a detection means such as a counter, or by visual inspection of the tape diameter, etc., and the cassette 15 of the same type of parts as the cassette 15 that is about to run out of parts is placed on the preliminary storage forming table. [Get ready at 8.

Then, when replacing the circuit board 8 after the component mounting device 1 has finished mounting the components on the circuit board 8, or when there are no components in the cassette 15 on the main stage I6, a spare The cassette 15 on the storage area forming table 18 is grasped and transferred to the empty storage area on the soil placement table 16. At this time, the soil mounting table 16 is moved to a position where the empty storage area coincides with the cassette 15 of the preliminary storage area forming table I8, and is stopped. Similarly to the transfer of the cassette 15, the cassette 15 with no parts on the main mounting table 16 is gripped by the chuck 36 at an appropriate time and taken out to the preliminary storage area forming table 18.

Locking and unlocking when transferring the cassette 15 is performed as follows. As shown in FIG. 4(A), the cassette 15 with the main body placed on the stand 16
The lock pawl 43 engages with the lock pawl engagement groove 42 of the main mounting table 16, and is locked by the bias of the compression spring 45.

When the chuck 36 descends to grip the cassette/cassette 15 (FIG. 4(B)), the push member 48 attached to the chuck 36 pushes the lock claw operating lever 46 of the cassette 15 as it descends. , Therefore, the lock pawl 43 opens and is disengaged from the lock pawl engagement 142. At this time, the chuck 36 engages with the chuck engagement hole 47 of the cassette frame Z3 and clamps the cassette frame 23. chuck 3
6 lifts up the cassette 15 (Fig. 4 (C)) =
The pushing member 48 continues to press the lock pawl operating lever 46, and the cassette 15 is received while the lock pawl 43 remains open. Kai! When the chuck 36 is opened and the chuck 36 is lifted when the toe 15 is carried to the preliminary storage forming table 18, the pressing member 48 of the lock claw operating lever 46 is released,
The lock pawl 43 is opened by the biasing force of the compression spring 45 and engages with the lock pawl engagement groove 42 . Therefore, the cassette 15 is locked to the preliminary storage forming base 18. The same applies to the case of transferring from the preliminary storage area forming table 18 to the main storage area forming table 16.

In this way, the cassette 15 is replaced,
Since the preliminary storage area forming table 18 is provided to place the spare cassette 15 to be transferred to the main loading table 16, and the cassette transfer device 19 is provided to transfer the cassette 15 from this preliminary storage area forming table 18 to the main loading table 16, The cassette 15 can be efficiently and automatically replaced.

In addition, locking claw engaging grooves 42 are provided on the main mounting table 16 and the preliminary storage forming table 18, and locking claws 43 are provided on each cassette 15, so that the cassette 15 is locked to the main mounting table 16 and the preliminary storage forming table 18. can be protected. In this case,
A push member 48 for pushing down the lock claw operating lever 46 is provided on the chuck 36 of the cassette transfer device I9.
Since the push member 48 engages and disengages the lock pawl 43 and the a-claw engagement 1A42 as the cassette 15 is raised and lowered, can be automatically locked and unlocked. Moreover, no special driving means is required for the locking/unlocking operation, the structure is i-stroke, and the control is energy-saving.

In addition, in the above-mentioned embodiment, the opening and claw engaging groove 4'2 were also provided in the preliminary storage space forming table 18, but it is not necessary to lock the cassette 15 to the preliminary storage forming table 18.
In addition, the two openings 7 and the claw engaging grooves 42 are directed inward to each other,
The lock pawl 43 may be opened outward and engaged with the lock pawl engagement LR42. In addition, a lock claw engaging portion is provided on the cassette 15, and the main! The two units 16 may be provided with locking claws.

Further, the lock claw engaging portion is not limited to the groove 42 of the above embodiment, but may be a protrusion or a hole. Further, the locking claw 43 may not be rotatable, but may move horizontally straight. In that case, a movement direction changing means such as a cam or a float is provided which is pushed by the lowering of the pushing member 48 and causes the lock pawl to move forward and backward in an instant. Also,
In the embodiment described above, the holding member 48 was provided, but the chuck 3
6 may directly contact the lock claw operating lever 46 to rotate it.

Effects of the Invention The parts feeding device of this invention has a function of 4! The cassette can be easily replaced, the cassette can be held in a locked state, and there is no need for a single drive source dedicated to engaging and disengaging the lock, resulting in a simple structure.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a state of mating the parts with a component mounting device according to an embodiment of the present invention, FIG. 2 is a side view thereof, FIG. 3 is a partially enlarged perspective view thereof, and FIG. FIG. 2 is an explanatory diagram of its operation.

Claims (2)

[Claims] (1) A main mounting table on which a plurality of cassettes containing parts are placed side by side, a preliminary storage area forming table on which spare cassettes to be transferred to the main mounting table are placed, a gripping means for gripping the cassettes, and a lifting means for lifting and lowering the gripping means. and a cassette transfer device having a drive means for advancing and retracting the cassette, and for loading the cassette of the preliminary storage space forming table onto the main mounting table using the gripping means, and a lock claw engaging portion provided on either the main mounting table or the cassette. and a locking claw which is provided on the other hand so as to be freely engageable and detachable from the locking claw engaging portion and which engages and disengages in conjunction with the attachment and detachment of the cassette to and from the main mounting base by the gripping means. . (2) The gripping means is provided with a pushing member that comes into contact with the movement-transferred portion of the locking pawl and causes the locking pawl to perform an unlocking operation as the gripping means moves up and down.
The parts feeding device described in item 1).