JP2621364B2 - Electronic component mounting equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an electronic component mounting apparatus, and more particularly to a structure of an electronic component supply unit.

(Prior art) As a device for mounting electronic components such as ICs and LSIs on a substrate, electronic components encapsulated in electronic component encapsulation tape are taken up by a transfer head, and then transferred to and mounted on a substrate positioned in a mount section. What is known is. This kind of electronic component encapsulating tape is generally unitized as a tape unit, for example, by being wound on a pay-out reel, and a plurality of tape units with different types of electronic components are arranged side by side to supply electronic components. By configuring the unit and sliding the supply unit back and forth on the moving device, the electronic components of each tape unit are positioned at the take-up position in the order of mounting, and then taken up by the transfer head and transferred to the substrate. It has become.

Conventionally, however, only one supply unit is provided in the moving device. Therefore, when any of the tape units on the supply unit is replaced with a new one, the operation of the device must be stopped. However, there was a problem that the mounting efficiency did not go up that much.

In order to solve such a problem, a device in which a supply unit is divided into two has been proposed (Japanese Patent Laid-Open No. 62-140499).
issue). However, in this case, since only two supply units are provided, if the electronic components of one supply unit are lost, the operator immediately moves to the supply unit before the electronic components of the other supply unit are exhausted. Therefore, the replacement of the tape unit has to be performed promptly, so that there is a problem that the operator is still busy with the replacement operation of the tape unit without having enough time. In particular, this type of electronic component mounting apparatus is not generally used alone, but is mounted on both ends of a printed circuit board printing apparatus or a soldering apparatus for soldering to a lead portion of an electronic component. Inspection devices and the like for inspecting the quality of the equipment are provided side by side, and the workers must manage these peripheral devices as well, but since the workers are busy with the replacement work as described above,
There was a problem that the management of peripheral devices and the like could not be performed completely.

By the way, this kind of supply unit is equipped with a considerable number, in some cases more than 100 tape units,
According to the observations of the present inventor, these tape units have a large number of consumed electronic components and are frequently replaced.
Electronic components consume less and some are rarely replaced.

Accordingly, the present invention has been made in view of the fact that the frequency of replacing tape units generally has considerable variation as described above.
In view of this point, an object of the present invention is to provide an electronic component mounting apparatus including a supply unit advantageous for exchanging a tape unit.

(Means for Solving the Problems) To this end, the present invention provides a moving device with an electronic component supply unit comprising a plurality of tape units equipped with electronic component encapsulating tapes arranged side by side. A supply unit for electronic components that is slid along the moving device by driving the drive unit, and in this supply unit, the electronic components on the electronic component encapsulating tape are taken up and transferred to the substrate positioned on the mount unit. In the electronic component mounting apparatus comprising a transfer head to be mounted and mounted, three or more supply units are disposed in the transfer device, and a tape unit having a low replacement frequency is arranged side by side in a supply unit in the center, and a side unit is provided. A tape unit with a high frequency of replacement is arranged in parallel with the supply unit, and the supply unit at the center and the supply unit at the side are separated from each other.

(Operation) In the above configuration, three or more supply units are guided and slid by the moving device, and are taken up by the transfer head in a state where predetermined electronic components are positioned at the take-up position. Is transferred to the substrate and mounted thereon. Of the three or more supply units, the consumption of electronic components in the side supply unit is larger than that in the central part, so that the tape unit mounted on the side supply unit must be frequently replaced. In such cases,
The supply unit on this side is moved to the side of the moving device, separated from the other supply units and retracted, and the other supply unit continues mounting work on the moving device, during which time the laterally retracted unit is retracted to the side. Replace the tape unit of the supply unit. When the replacement is completed, another supply unit being mounted is connected to the supply unit whose replacement has been completed, and the mounting operation is continued by these supply units again.

Embodiment 1 Hereinafter, an embodiment of the present invention will be described with reference to the drawings, taking a rotary head type electronic component mounting apparatus as an example.

FIG. 1 is a perspective view of an electronic component mounting apparatus, FIG. 2 is a plan view, and 1 is a main body box in which a driving device is stored.
Is a rotary head rotatably disposed below the main body box 1. Reference numeral 3 denotes a mount portion provided at a lower portion on the front side of the rotary head 2 on the front side of the box 1,
The XY tables 4 and 5 are used to drive the XY tables 4 and 5 to position the substrate 7 at a predetermined position. A number of transfer heads 8 are provided vertically below the rotary head 2 along the circumferential direction, and suck the electronic components at the lower end thereof. Reference numeral 9 denotes a conveyor which carries the substrate 7 into and out of the mount unit 3. Reference numeral 10 denotes a supply section for electronic components provided on the rear side of the main body box 1, and FIGS.
The details will be described with reference to the drawings.

Reference numeral 11 denotes a horizontally long moving device, in which a feed screw 13 is provided in a groove 12 formed in a concave portion on the moving device. Reference numeral 14 denotes a motor as a drive unit disposed inside the moving device 11, and the feed screw 13 is driven by the motor 14. 15 and 16 are bearings of the feed screw 13. A, B, and C are supply units for electronic components disposed on the moving device 11, and are respectively provided on the plate-shaped bases 21, 22, and 23, and a plurality of bases on the bases 21 to 23. It consists of a tape unit 24. As will be described in detail later, the supply units A, B, and C can be joined and separated from each other. As shown in FIG. 2, the central portion of the moving device 11 is an operation area in which the supply unit slides back and forth for performing the mounting operation, and both side portions are the attaching / detaching areas for attaching / detaching the connecting portion 40 (described later). An extra area is secured between the areas.

FIG. 4 is a side view of the supply unit B. The supply unit B is provided on an upper surface of a base 22 provided on the moving device 11,
The board 25 on which the tape unit 24 is set is detachably mounted. Reference numeral 31 denotes a stop formed at the front of the base 22, reference numeral 32 denotes an openable / closable clamp provided at the rear, and the tape unit 24 has a tapered front surface of the substrate 25 at the stop 31 and a rear end surface. Is fixed by the clamp part 32.
The operation of the clamp unit 32 may be performed manually, or may be performed by a driving unit such as a cylinder. That is, these 31 and 32 constitute detachable mounting means for the tape unit 24 to be attached to and detached from the base 22. In each of the drawings, the tape unit 24, the clamp portion 32, and the like are omitted as appropriate because the drawings become complicated.

The tape unit 24 includes a reel 27 for feeding out an electronic component enclosing tape 26 in which electronic components are enclosed, a take-up reel 28 for a cover tape 261 and the like. The cover tape 261 of the electronic component enclosing tape 26 fed from the payout reel 27 is peeled off by a peeling means (not shown), and the electronic components encapsulated in the electronic component encapsulation tape 26 are exposed to be exposed below the rotary head 2. Is positioned at a positioning position a (see FIG. 2), taken up by the transfer head 8, transferred to the substrate 7 of the mount section 3 by intermittent rotation of the rotary head 2, and mounted thereon. Reference numeral 29 denotes a nut mounted on the lower surface of the base 22, which is screwed to the feed screw 13, and when the feed screw 13 is rotated by driving the motor 14, the supply unit B slides reciprocally on the moving device 11. I do. Reference numerals 33 and 34 denote guard rails provided on both sides of the feed screw 13 in parallel with the feed screw 13, and reference numerals 35 and 36 denote fitting portions formed on both sides of the lower surface of the bases 21 to 23.

Although the supply units A and C have the same structure as the supply unit B, in this embodiment, these supply units A and C
4. It does not have driving means such as the feed screw 13 and the nut 29, and is merely mounted on the guide rails 33 and 34. Therefore, of the three supply units A to C, only the supply unit B at the center is slid by being driven by the motor 14, and the other supply units A and C at the side are connected to the supply unit B by the connection unit 40. It is towed by this and slides. That is, only the supply unit B is a drive supply unit driven by the motor 14, and the other two supply units
A and C are driven supply units that are towed and slid by the drive supply unit B. By mixing and knitting the drive supply unit and the driven supply unit in this way, the motor 14, the feed screw 13, the nut Driving means such as 29 are omitted as much as possible.

FIG. 5 shows a connecting portion 40 between the supply unit B and the supply unit C.
41 shows a structure of a supply unit B.
Stopper mounted on the side wall of 22; 42 is the base of the supply unit C
A lever rotatably mounted on the side wall of the pin 23 by a pin 43,
44 is a biasing spring material, 45 is a locking portion attached to the tip of the lever 42, and 46 is a locking hole into which the locking portion 45 fits. Reference numeral 47 denotes a cylinder as an attachment / detachment device for attaching / detaching the connecting portion 40, and reference numeral 471 denotes its rod. The lever 42 is urged counterclockwise by the spring force of the spring member 44. When the rod 471 of the cylinder 47 protrudes, the lever 471 is pushed by this and rotates clockwise against the spring force of the spring material 44, and the locking portion 45 rotates upward and separates from the locking hole 46. Then, the connection state between the supply unit B and the supply unit C is released. When the locking unit 45 rotates upward in this manner, the supply unit B approaches and comes into contact with the supply unit C, and when the rod 471 of the cylinder 47 is retracted there, the lever 42 moves the spring member 44 The locking unit 45 rotates counterclockwise due to the spring force, and the locking unit 45 rotates downward to engage with the locking hole 46, and the supply unit B and the supply unit C are connected. In order to securely connect the supply section B and the supply section C without play, the locking surface 461 of the locking section 46 is used.
Is tapered, and is firmly pressed against the tapered surface of the locking hole 46. The same applies to the structure of the connecting portion 40 between the supply unit A and the supply unit B. Similarly to the supply unit B, the supply units A and C may be provided with driving means such as a feed screw, a nut, and a motor so that the supply unit B can be slid by itself without being towed. If they are independently slid, an attaching / detaching device such as the connecting portion 40 or the cylinder 47 can be dispensed with.

FIGS. 6 and 7 show an exchange device for the tape unit 24.
Numerals 60 and 61 denote exchange areas of the tape unit 24 on both sides in front of the conveyor 9 (see also FIG. 2), and 63 denotes a magazine or stocker of the tape unit 24. Is disposed near the person M.
The exchange device 60 includes an arm-shaped pair of left and right holding members 64, 64 for holding the supply unit A, a driving unit 65 such as a motor for rotating the holding members 64, 64 in the opening / closing direction N, and a holding member.
The cylinder 66 for raising and lowering the 64, 64, a shaft 67 for guiding the cylinder 66 to slide between the supply unit 10 and the replacement area 61, a driving unit 68 for driving this sliding, and the like. I have.

Next, the operation of the switching device 60 will be described.
Supply unit A with no electronic components in the operation area
Is sent to the side attachment / detachment area, and the cylinder 47 is operated to release the connection with the supply unit B. Next, the holding members 64, 64 descend from above to grip the supply unit A (see the chain line in FIG. 7), and then hold and raise the supply unit A to move to the replacement area 61. Therefore, the worker M operates the tape unit in which the electronic components on the supply unit A are lost.
24, a new tape unit 24 stored in magazine 63
Replace with Next, the holding member 64 returns to the moving device 11, and
Therefore, the supply unit A is lowered and placed on the moving device 11, and the holding member 64 is expanded and separated from the supply unit A.
Depart upwards. Then, the supply unit B approaches the supply unit A to connect the two A and B, and the supply unit B returns to the operation area and continues the mounting operation. The exchange device 60 is also provided on the other supply unit C side, and the tape unit 24 of the supply unit C is exchanged in the same manner. In this case, unlike the supply unit B, the supply units A and C do not have the nut 29 to be screwed to the feed screw 13 and are merely placed on the movement device 11, so that the movement device You can lift from 11 or land on it. Of the three supply units A to C, the central supply unit B is provided with a tape unit 24 that consumes a small amount of electronic components and therefore has a low replacement frequency. In the supply units A and C, a tape unit 24 that consumes a large amount of electronic components and is therefore frequently replaced is provided.

This apparatus has the above-described configuration. Next, the operation of the supply unit 10 will be described with reference to FIG.

In FIG. 7A, the three supply units A, B, and C are reciprocatingly slid in the operation area in a connected state where they are connected by the connecting portion 40, and the mounting operation is performed. Side supply unit A
In the case where the electronic parts are lost or the kind of electronic parts is changed, the units A, B, and C are moved to the left detachable area, and the supply unit A is operated by the operation of the cylinder 47.
Is separated from the supply unit B (see (b) in the figure), and then the supply units B and C return to the central operation area and the mounting operation is continued (see (c) in the figure). At 60, the tape unit 24 of the supply unit A is replaced. Of course, the replacement of the tape unit 24 may be performed by the operator without moving the replacement unit 60 in the replacement areas 61 and 62 to the supply unit 10, and in this case, the attachment / detachment area is the replacement area. Then, when the replacement work is completed, the supply units B and C are brought closer to the supply unit A as soon as possible before the electronic components of the other supply unit C are exhausted, and they are connected (see FIG. 4D). The three supply units A, B, and C are returned to the operation area again, and the mounting operation is continued (see FIG. 9E). Such a replacement operation of the tape unit 24 is similarly performed for the other supply unit C.

Embodiment 2 FIG. 9 shows a case where the number of supply units D, E, F, and G is four. In this case as well, supply units E and F in the center are provided with infrequently replaced tape units, and supply units D and G are provided with frequently-replaced tape units in the side where replacement is easy. Has been established. Also detachable device 4
7 are provided in total at each attachment / detachment position. Therefore, when the electronic components of the supply units D and G on the side are exhausted, the supply units D to G are moved to the side to separate the supply units. Of course, in this case as well, driving means such as a motor, a feed screw, and a nut may be provided in all the supply units D to G so that they can slide on the moving device by themselves, or some of the supply units ( For example, a driving unit may be provided only in the supply units D and F, and the other supply units (for example, the supply units E and G) may be towed and slid by the supply units.
In addition, this arrangement is advantageous from the viewpoint of mounting work and drive programming of the device if the arrangement of electronic component types of the left supply unit D, E and the right supply unit F, G is symmetrical. .

The present invention is conceivable in various use modes. For example, a mobile device is equipped with three or more supply units, but not all supply units need always be used at the same time. Only a part of the supply units may be slid in the operation area to perform the mounting operation, and the other supply units may be separated from the supply units as appropriate and may be retracted to the side. It can be changed freely according to conditions. In the above embodiment, both sides of the moving device are detachable areas. However, in a case where the electronic parts are lost, the supply unit is immediately stopped sliding in the operation area, and the supply unit is separated or replaced there. The position of the attachment / detachment area where the supply unit is joined and separated or the replacement area of the tape unit is not limited to the above embodiment.

(Effects of the Invention) As described above, the present invention provides an electronic component mounting apparatus of this type, in which three or more supply units are provided in the moving device,
A tape unit with a low replacement frequency is arranged side by side in the supply unit in the center, a tape unit with a high replacement frequency is arranged in the side supply unit, and the supply unit in the center and the side supply unit are joined to each other. Since the separation unit can be freely separated, the supply unit that is frequently replaced is disposed on the side where the replacement operation is easily performed, so that the replacement operation can be performed very advantageously without the operator having to follow the replacement operation.

The central supply unit is a drive supply unit that is driven by a drive unit including a motor, a feed screw, and a nut and slides along the moving device, and the side supply unit is towed by the drive supply unit. The number of parts of the motor, the feed screw, the nut, and other driving means is reduced by providing a driven supply unit that slides and a connecting part that connects the drive supply unit and the driven supply unit so that they can be separated. Simplification and cost reduction, and by eliminating the need for a heavy nut (generally very heavy) in the driven supply unit, the load on the driven unit can be reduced and high-speed sliding on the moving device can be achieved. realizable.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is an overall perspective view of an electronic component mounting apparatus, FIG. 2 is a plan view, FIG. 3 is a front view of a supply unit, and FIG. Side view of the fifth
The figure is a side view of the connecting portion, FIGS. 6 and 7 are overall side and partial front views of the exchange device, and FIGS. 8 (a), (b),
(C), (d), and (a) are plan views of the supply unit during the mounting operation, and FIG. 9 is a plan view of the supply unit during the mounting operation of another embodiment. 3 Mounting part 7 Substrate 8 Transfer head 10 Supply part 11 Moving device 14 Motor as drive part 24 Tape unit 26 Tapes A, C and D enclosing electronic components , G …… Side supply unit B, E, F …… Central supply unit

Claims (1)

(57) [Claims] An electronic component supply unit comprising a plurality of tape units provided with electronic component enclosing tapes is arranged in a moving device, and the supply unit is driven along with the moving device by driving a driving means. Electronic component mounting comprising a supply part for electronic components slidable, and a transfer head for taking up the electronic components of the electronic component encapsulating tape in this supply part, and transferring and mounting the electronic components on a substrate positioned on a mount part. In the apparatus, three or more of the supply units are arranged in the moving device, a tape unit with a low replacement frequency is arranged in a central supply unit, and a tape unit with a high exchange frequency is arranged in a side supply unit. And the central supply unit and the side supply unit can be joined and separated from each other, and the central supply unit is
A drive supply unit that is driven by a drive unit including a motor, a feed screw, and a nut to slide along the moving device, and that the side supply unit is driven by the drive supply unit and slides to be driven. An electronic component mounting apparatus comprising a unit and a connecting portion for connecting the drive supply unit and the driven supply unit so as to be capable of being joined and separated.