JPH09202502A - Remaining amount detecting device for part feeding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect an amount of a remaining tape in a taper feeder through simple constitution. SOLUTION: A reel 15 around which a tape 16 is wound is rotatably supported. A tape feeder 4 is constituted in such a manner that the tape 16 is outputted from the reel 15 and guided to a part take-out part 18. A reel press 13 to prevent the occurrence of a slack of the tape 16 is pressed from the outside of the tape 16 wound around the reel 15 and an index part 13b forced into a standing-upright attitude when an amount of a remaining tape attains a specified value is arranged integrally with the reel press 13. Remaining amount detecting means 5 each consisting of a device 5a on the light emission side and a device 5b on the light receiving side are arranged on both sides of the tape feeder 4. When the index part 13b is brought into a standing-upright attitude, light irradiated from the light emission part 34 of the device on the light emission side toward the light receiving part 35 on the light receiving side device is cut off by the index part 13b and the cut-off is announced to an operator by an announcing means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a residual quantity detecting device in a component supply device configured to sequentially supply electronic components to predetermined positions using a tape as a carrier in order to mount electronic components on a board in a mounting machine. It is about.

[0002]

2. Description of the Related Art Conventionally, a tape consisting of a tape main body and a cover tape, which contains a large number of parts at regular intervals, is wound around a reel in advance, and the tape led out from this reel is guided to a parts pick-up section. BACKGROUND ART A tape feeder is generally known in which a cover tape is peeled from a tape body at a component take-out portion so that a component can be taken out, and a movable suction head is used to take out a component.

In this tape feeder, the tape is fed by a tape feeding mechanism composed of a ratchet rotating mechanism and the like, and such feeding of the tape is carried out in synchronism with the component taking-out operation by the suction head. By doing so, the tape is intermittently fed according to the removal of the component by the suction head.

[0004]

In this type of tape feeder, generally, when the tape is fed out to the vicinity of the end and no part remains on the tape, a non-adsorbed state of the part occurs in the mounter main body. Depending, for example,
When the mounting machine is stopped, the tape feeder is notified of the shortage of parts. In other words, the tape feeder will be informed of the shortage of parts.

However, if the lack of parts in the tape feeder is notified afterwards as described above, for example, the mounting operation is restarted immediately because there is no other tape feeder for supplying the same parts. In some cases, the mounting machine has to be stopped until the reel exchange is completed, and in such a case, work efficiency is significantly impaired.

Therefore, while counting the remaining amount of parts, the necessity of reel replacement is notified as necessary,
It is desirable to be able to replace the reels before the parts run out.However, since the mounter is usually equipped with a large number of tape feeders, the remaining parts count for each tape feeder is as described above. If a means for counting is provided, the structure of the tape feeder becomes complicated,
There is a risk that the structure and control of the mounting machine will be complicated, such as control required to manage the remaining amount of components on the mounting machine main body side.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a remaining amount detecting device in a component supply device capable of detecting the remaining amount of tape in a tape feeder with a simple structure. I am trying.

[0008]

In a remaining amount detecting device in a component supplying device according to the present invention, a reel around which a tape containing a large number of components is wound is rotatably supported, and the tape is led out from the reel. In a component supply device including a tape feeder configured to be guided to a component take-out section, a swing member that swings according to the remaining amount of the tape wound on the reel, and the swing member are detected. A detecting means is provided, and the detecting means is configured to detect the swing member when the tape reaches a predetermined remaining amount (claim 1).

According to this apparatus, the remaining tape amount can be detected on the basis of the displacement of the swinging member accompanying the tape feeding, so that the remaining tape amount can be detected with a simple structure.

In such a structure, when the tape feeder is provided with the tape retainer, the detected part by the detecting means is provided integrally with the tape retainer (Claim 2) to effectively use the existing parts. It is possible to detect the remaining tape amount by using it.

When a large number of tape feeders are arranged in parallel, at least when the tape wound on the reel reaches the above-mentioned predetermined remaining amount, the detected portion projects outside the tape feeder. In addition to configuring the rocking member, the light-emitting portion and the light-receiving portion of the light ray is arranged to face each other to form a detection means, and the light-emitting portion and the light-receiving portion are outside each tape feeder, By arranging the detected portion provided on the swinging member of each tape feeder at a position sandwiching the swinging track (Claim 3), the tape is detected using a common detecting means for a plurality of tape feeders. It becomes possible to detect the remaining amount.

[0012]

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 schematically shows a surface mounter (hereinafter abbreviated as a mounter) to which a remaining amount detecting device in a component supply device according to the present invention is applied. In this figure, 1 is a printed circuit board, which is conveyed by a conveyor 2 and positioned and held at a predetermined work position.

A component supply unit 3 is arranged on the side of the printed circuit board 1 (hereinafter abbreviated as the circuit board 1). The component supply unit 3 is provided with a large number of rows of tape feeders 4 for supplying components using tape as a carrier. These tape feeders 4 are arranged side by side in the conveying direction of the conveyor 2, and the remaining tape amount of the tape feeder 4 is set. A remaining amount detecting means 5 (optical detecting means) for detecting is provided, and the light emitting side device 5a and the light receiving side device 5b constituting the optical detecting means 5 are arranged on both outer sides in the arrangement direction of the tape feeders 4, respectively. Has been done.

Above the board 1 and the component supply unit 3,
A head 7 having a nozzle member 8 (shown in FIG. 2) for picking up components is movably provided. The head 7 reciprocates between the substrate 1 and the component supply unit 3, and each tape feeder 4 is moved. The component supplied from the device is sucked and mounted on the substrate 1.

FIG. 2 schematically shows the structure of the tape feeder 4. As shown in this figure, the feeder main body 10 on the front side and the reel plate 11 on the rear side are configured.

The reel plate 11 is provided with a reel support shaft 12 and a reel retainer 13 as a swing member. A reel 15 is rotatably attached to the reel support shaft 12 and a large number of reels 15 are attached to the reel support shaft 12. The tape 16 containing the electronic components is wrapped around. Although not shown in detail, the tape 16 is composed of a tape main body and a cover tape, and a large number of component storage portions that open upward in the tape main body are arranged at regular intervals, and the components are stored in the component storage portions. The above-mentioned cover tape closes each component storage portion from above.

The reel retainer 13 is swingably supported by the reel plate 11 via a swing shaft 14. The reel retainer 13 is provided with a retainer portion 13a extending downward from a supported portion of the swing shaft 14, and the retainer portion 13a is provided.
The tape 16 wound around the reel 15 is pressed from the outside by its own weight to prevent the tape 16 from loosening.

Further, an indicator portion 13b extending upward from the supported portion of the swing shaft 14 is attached to the reel retainer 13 as a detected portion of the remaining amount detecting means 5. The index portion 13b swings integrally with the pressing portion 13a,
When the tape 16 wound around the reel 15 reaches a certain amount, specifically, the amount of remaining parts is small and the amount required to replace the reel reaches a certain amount, the tape 16 is in an upright posture as shown by a dashed line in FIG. It is formed so as to project upward from the upper end of the reel plate 11.

The feeder main body 10 is provided with a component take-out portion 18 at its front end portion (right end portion in the figure).
The tape 16 derived from the reel 15 is guided to the component take-out portion 18 via a guide roller or the like.

Although not shown in the figure, the feeder main body 10 has a tape feeding mechanism for feeding a tape,
A cover tape take-out mechanism and the like are integrally provided, and at the time of mounting, the cover tape is peeled off from the tape 16 at the component take-out portion 18 so that the component can be taken out. The tape 16 is taken out from the tape 16, and the tape 16 is taken out by a fixed amount by the tape feeding mechanism as the parts are taken out.

In the tape feeder 4, the feeder main body 10 is attached by a clamp 20 while being positioned by a positioning pin 19 on a feeder setting portion 6 provided on the base of the mounting machine. Further, the reel plate 11 is detachably coupled to the feeder main body 10, and when the reel 15 is replaced, only the reel plate 11 can be detached while the feeder main body 10 is attached to the feeder installation portion 6. ing.

Feeder body 10 and reel plate 11
As shown in the same drawing, the pair of engaging shafts 21 formed of flanged shafts provided on the reel plate are provided in the feeder main body 10 at the two upper positions, respectively. It is achieved that the notch groove 24 provided on the reel plate 11 is engaged with a locking shaft 25 formed of a flanged shaft body provided on the feeder main body 10 at the lower part while being hooked to 23. ,
By moving the reel plate 11 with respect to the feeder main body 10 in the vertical direction along the cut grooves 22 and 23, the reel plate 11 can be attached to and detached from the feeder main body 10.

FIG. 3 schematically shows the structures of the light emitting side device 5a and the light receiving side device 5b which constitute the remaining amount detecting means 5.

The light emitting side device 5a includes a mounting plate 31a at the front end and a sensor support arm 3 connected to the rear end.
It has a frame 30 consisting of 1b. The frame 30 is attached to the feeder installation section 6 by a clamp 33 while being positioned by the positioning pins 32 of the attachment plate 31a, and can be attached to and detached from the feeder installation section 6 by operating the clamp 33. Has become.

A light emitting portion 34 for irradiating light toward the arrangement direction of the tape feeders 4 is provided at the rear end portion (the left end portion in the figure) of the sensor support arm 31b.
The light emitting portion 34 is located at a position above the upper end of the reel plate of the tape feeder 4, and the indicator portion 13b provided on the reel retainer 13 of the tape feeder 4 is in an upright posture as shown by the alternate long and short dash line in FIG. It is arranged so that the irradiation light is blocked by the indicator portion 13b when it is turned on.

On the other hand, the light-receiving side device 5b is provided with a light-receiving part 35 for receiving the light emitted from the light-emitting part 34, instead of the light-emitting part 34, except for the light-emitting side device 5b.
It has the same configuration as a.

That is, when the indicator portion 13b of the reel retainer 13 of the tape feeder 4 is in a standing posture and the irradiation light is blocked, it is detected that the remaining tape amount reaches a certain amount in any one of the tape feeders 4. The remaining amount detecting means 5 is configured to do so. Although not shown, the mounting machine is provided with a notification means such as a lamp, and when the irradiation light is blocked by the indicator portion 13b in the remaining amount detection means 5 as described above, the notification means is provided. Is activated to inform the operator.

In the apparatus of this embodiment as described above, in each tape feeder 4, the reel 15 to the tape 16 are fed.
Is led out and guided to the component taking-out portion 18, and the cover tape is peeled off at the component taking-out portion 18 to hold the component so that it can be taken out. Then, the component is taken out by the nozzle member 8 of the head 7 and mounted on the substrate 1, and the tape 16 is taken out by a constant amount in accordance with the taking-out operation of the component by the nozzle member 8 so that the next component can be taken out. Held in a state.

When the remaining tape amount reaches a certain amount in any of the tape feeders 4, the light emitted from the light emitting portion 34 of the light emitting side device 5a is blocked by the indicator portion 13b of the reel retainer 13 as described above. As a result, the operator is informed that the notification means is operated and it is necessary to replace the reel 15 in any of the tape feeders 4.

The operator replaces the reel 15 with a new one in the corresponding tape feeder 4, but in the present embodiment, the reel plate 11 having the new reel 15 mounted thereon is prepared separately, and as described above, the feeder is used. Reel exchange is performed by exchanging the reel plate 11 while the main body 10 is attached to the feeder installation section 6.
Specifically, reel exchange is performed in the procedure as shown in FIG.

First, the reel plate 11 is removed from the feeder body 10, and the remaining tape 16 is removed from the reel 15.
Are drawn out (FIG. 4 (a)).

Next, the extension jig 4 is attached to the feeder main body 10.
0 is mounted, and the reel plate 11 to be replaced is mounted on the extension jig 40 (FIGS. 4B and 4C).

The extension jig 40 is a plate extending in the front-rear direction (left-right direction in the figure) and has the same structure as the engaging shaft 21 and the cut groove 24 of the reel plate 11 at the front part (right side in the figure). An engaging shaft 21 'and a cutting groove 24' are provided, and the engaging shaft 21 'and the cutting groove 24' are engaged with the cutting grooves 22 and 23 and the engaging shaft 25 of the feeder main body 10 to thereby form the feeder main body 10. Be attached to.
Further, at the rear part of the extension jig 40, an engaging shaft 25 'and cutting grooves 22', 23 'having the same structure as the engaging shaft 25 and the cutting grooves 22, 23 of the feeder main body 10 are provided, and are replaced. The engaging shaft 21 and the notch groove 24 of the reel plate 11 correspond to the engaging shaft 25 ′ and the notch groove 2.
The reel plate 11 is mounted on the rear portion of the extension jig 40 by being engaged with the 2'and 23 '.

The tip of the tape 16 wound around the reel 15 of the reel plate 11 is connected to the connecting jig 41.
16 left on the feeder body 10 using
Is connected to the rear end. At this time, the connecting jig 41 is held in a state of being locked to an edge portion such as a holding opening formed on the reel plate 11 or the extension jig 40, and the tape connecting operation is performed in this state.

When the connection of the tape 16 is completed, the extension jig 40 and the reel plate 11 are removed from the feeder main body 10, and only the reel plate 11 is mounted on the feeder main body 10 to correct the looseness of the tape 16 and the like. This completes the reel replacement work.

As described above, according to the apparatus of the above-described embodiment, when the remaining amount of the tape 16 in each tape feeder 4 reaches a certain amount, this is notified to the operator via the notifying means, so the parts are out of stock. The reel can be replaced before the occurrence of. Therefore, it is possible to effectively avoid the situation where the mounting operation has to be temporarily stopped as a result of the subsequent detection of component shortage, as in the conventional device of this type. Therefore, the mounting efficiency can be improved by avoiding the stop of the mounting machine main body due to such a component shortage.

The detection of the remaining tape amount is performed based on the detection of the indicator portion 13b by the remaining amount detecting means 5 utilizing the swinging of the reel retainer 13 of each tape feeder 4, and the remaining amount. Since the detection unit 5 is configured to be commonly used by the tape feeders 4 of the component supply unit 3,
Without complicating the configuration of each tape feeder 4,
The remaining tape amount can be detected with an extremely simple configuration.

By the way, in this embodiment, since the reel exchanging work is performed by using the extension jig 40 as described above, there is also an advantage that the reel exchanging work can be performed more quickly and appropriately. That is, since the tape feeders 4 of the component supply unit 3 are arranged side by side at extremely narrow intervals as shown in FIG. 1 in terms of space efficiency and component adsorption efficiency, when reel replacement is performed without using the extension jig 40. In this case, the adjacent tape feeders 4 obstruct the operation of connecting the tapes. However, if the reels are replaced by using the extension jig 40 as described above, the reel plate 11
Since it is possible to carry out the connecting work of the reels 16 while keeping the state of being pulled out to the rear of the component supply section 3, the tape feeders 4 on both sides do not get in the way. Therefore, the workability is good, and the tape connection work can be performed quickly and appropriately.

The mounting machine of the above embodiment is an example of the mounting machine to which the remaining amount detecting device in the component supply apparatus according to the present invention is applied, and the mounting machine or the specific configuration of the tape feeder is The present invention can be appropriately modified without departing from the scope of the present invention.

For example, in the device of the above embodiment, the light emitting side device 5a and the light receiving side device 5b are arranged on both sides of the tape feeder 4 in the arrangement direction, and the irradiation light is blocked by the indicator portion 13b of the reel retainer 13. The remaining amount detecting means 5 is configured to detect the remaining amount of tape, but such an optical remaining amount detecting means may be provided for each tape feeder 4. In this case, as compared with the apparatus according to the above-described embodiment, it is convenient because the target tape feeder 4 can be easily determined.

The type of the detecting means is not limited to the optical detecting means as described above, and for example, a contact type switch or the like for detecting the index portion 13b when the index portion 13b is in contact is used as the detecting means. It doesn't matter.

[0043]

As described above, according to the present invention, the component feeding device is provided with the tape feeder configured so as to guide the tape containing the components from the rotatably supported reel while guiding the tape to the component unloading section. In the above, a swinging member that swings according to the remaining amount of the tape wound on the reel and a detection means for detecting the swinging member are provided and shaken when the tape wound on the reel reaches a predetermined remaining amount. Since the detection means is configured to detect the moving member, the remaining tape amount can be detected with a simple structure. Therefore, based on the detection of the rocking member by the detection means, it is possible to replace the reel before the parts run out, and as in the conventional device of this type, as a result of the subsequent detection of the parts run out, It is possible to effectively avoid the situation where the mounting operation must be stopped.

In particular, in such a structure, when the tape feeder is provided with a tape retainer for preventing loosening of the tape drawn out from the reel, the detected portion by the detecting means is integrated with the tape retainer. If provided, the existing component can be effectively used to detect the remaining tape amount.

Further, when a large number of tape feeders are arranged in parallel, when the tape wound on the reel reaches a predetermined remaining amount, the detected portion swings so as to project to the outside of the tape feeder. The above-mentioned detecting means is constituted by an optical detecting means which constitutes a member and has a light emitting portion and a light receiving portion of the light beam arranged to face each other, and these light emitting portion and light receiving portion are outside the tape feeder and each tape feeder. By disposing the detected part provided on the rocking member of the rocking member on both sides of the rocking trajectory, it is possible to detect the remaining amount of the tape by using a common detecting means for a plurality of tape feeders. it can. Therefore, in a device including a large number of tape feeders, it is possible to detect the remaining tape amount of each tape feeder with a very simple configuration.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing a surface mounter to which a remaining amount detection device in a component supply device of the present invention is applied.

FIG. 2 is a schematic side view showing a tape feeder.

FIG. 3 is a schematic side view showing a light emitting side device (light receiving side device).

4 (a) to 4 (c) are views for explaining a procedure of reel exchange work.

[Explanation of symbols]

 4 tape feeder 6 feeder installation part 8 nozzle member 10 feeder body 11 reel plate 13 reel retainer 13a retainer 13b indicator 15 reel 16 tape 34 light emitting part 35 light receiving part

Claims (3)

[Claims] 1. A component supply provided with a tape feeder configured to rotatably support a reel around which a tape containing a large number of components is wound and to guide the tape from the reel to a component unloading section. The apparatus is provided with a swing member that swings according to the remaining amount of the tape wound on the reel, and a detection unit that detects the swing member, and the tape has reached a predetermined remaining amount. The remaining amount detecting device in a component supply device, wherein the detecting means is configured to sometimes detect the swinging member. 2. The swing member is provided integrally with the tape retainer, which is in contact with an outer peripheral portion of the tape wound around the reel and is swingably supported by a tape feeder. The remaining amount detecting device in the component supply device according to claim 1, comprising a detected part. 3. The component supply device is such that a large number of tape feeders are arranged in parallel, and the oscillating member is provided with at least the tape wound around a reel when the tape has reached the predetermined remaining amount. The detected portion is configured to project to the outside of the tape feeder, and the detection means is constituted by an optical detection means in which a light emitting portion and a light receiving portion of the light beam are arranged to face each other. 3. The section and the light receiving section are arranged outside the tape feeder and at positions sandwiching a swing track of a detected section provided on the swing member. Remaining amount detection device in the component supply device of.