JPH0521985A - Nozzle replacement device for electronic component mounting device - Google Patents

Abstract

(57) [Summary] [Purpose] To promptly complete nozzle replacement. [Structure] While the transfer head 5 moves in XY directions, a chip P of a parts feeder 3 is adsorbed by a nozzle 6 mounted on the transfer head 5 to be picked up and transferred to a substrate 1 positioned by a positioning unit 2. A nozzle exchanging device 30 in an electronic component mounting device to be mounted, which is mounted on the transfer head 5 and a supply means 32 for supplying the nozzle 6 to the transfer head 5 beside the positioning part 2. Nozzle 6
The collecting means 31 for collecting the liquid is disposed so as to be movable relative to each other, and the nozzle mounting portion 45 in which the nozzle 6 for the next use provided in the supplying means 31 is mounted, and the empty space provided in the collecting means 31. The nozzle mounting part 45 and the nozzle mounting part 45 were made to stand by in proximity to each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nozzle exchanging device for an electronic component mounting apparatus, and shortens the time required for exchanging the nozzle as much as possible to improve the work efficiency of chip mounting on a substrate.

[0002]

2. Description of the Related Art As an electronic component mounting apparatus, while moving a transfer head in X and Y directions, a chip of a parts feeder such as a tape feeder or a tray feeder is adsorbed by a nozzle of the transfer head to be picked up and transferred to a substrate. What you do is widespread.

Since the chip has various shapes and dimensions, it is necessary to replace the nozzle depending on the type of the chip. Therefore, the electronic component mounting apparatus is generally provided with an automatic nozzle replacement means.

FIG. 9 shows a conventional nozzle replacement means. In the figure, 1 is a substrate positioned by the positioning unit 2,
3 is a tray feeder equipped with the chip P, 4 is an XY table on which the transfer head 5 is mounted, 6 is a nozzle of the transfer head 5, and 101 is a nozzle stocker provided on the side of the positioning unit 2. The nozzle stocker 101 has an elongated table shape, and a plurality of nozzle mounting portions 102 of the nozzles 6 are formed in a horizontal row in the shape of a circular hole. Next, the operation will be described.

When the XY table 4 is driven, the transfer head 5 moves in the XY directions, and the chips P of the tray feeder 3 are transferred and mounted on the substrate 1 as shown by a locus Q1.

When the type of the chip P mounted on the substrate 1 changes, the nozzle 6 mounted on the transfer head 5 is replaced correspondingly. As shown in the locus Q2, this exchange is performed by moving the transfer head 5 directly above the empty mounting portion 102 of the nozzle stocker 101 and then descending it.
The nozzle 6 that has been mounted on the transfer head 5 until then is mounted on the nozzle mounting portion 102 and is collected. Next, the transfer head 5 moves onto the desired nozzle 6 and mounts the nozzle 6.

When the replacement of the nozzle 6 is completed in this way, the transfer head 5 moves above the tray feeder 3 to pick up the chip P by adsorbing it onto a new nozzle 6 and transferring and mounting it on the substrate 1. To do.

[0008]

In the above replacement work, the transfer head 5 is moved over the nozzle stocker 101 by the distance L.
However, the time required for this movement is dead time, and the mounting work efficiency of the chip P is reduced accordingly.

In particular, in recent years, the number of types of chips P has tended to increase, and correspondingly, the number of types of nozzles 6 has also increased. Therefore, the nozzle stocker 101 also tends to become larger and larger so as to be able to equip various types of nozzles 6, but as the nozzle stocker 101 becomes larger, the maximum moving distance Lmax of the transfer head 5 required for nozzle replacement becomes longer, Along with this, the dead time also becomes longer,
There is a problem that the chip mounting work efficiency is further reduced.

Incidentally, when it is necessary to replace the nozzle 10 to 20 times in order to mount the chip on one substrate,
The above total dead time cannot be ignored.

Therefore, it is an object of the present invention to provide a nozzle exchanging device which solves the problems of the above conventional means.

[0012]

To this end, according to the present invention, while the transfer head moves in the XY directions, the chips of the parts feeder are adsorbed by the nozzles mounted on the transfer head to be picked up, and the positioning part is positioned. A nozzle exchanging device in an electronic component mounting device adapted to be transferred and mounted on a positioned substrate, wherein a supply means for supplying nozzles to a transfer head and a transfer head mounted on the transfer head are provided on the side of the positioning portion. A collection means for collecting the nozzles is arranged so as to be movable relative to each other, and a nozzle mounting portion mounted with a nozzle for next use provided in the supply means, and an empty nozzle mounting portion provided in the collection means. Are made to stand by in close proximity to each other.

[0013]

According to the above construction, since the nozzle mounting portion of the collecting means and the nozzle for the next use mounted on the nozzle mounting portion of the supplying means are located close to each other, the transfer head of the transfer head required for nozzle replacement is disposed. The distance traveled is extremely short,
Therefore, the nozzle replacement can be completed promptly.

[0014]

(Embodiment 1) Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an overall plan view of the electronic component mounting apparatus. The same parts as those of the conventional means shown in FIG. 9 are designated by the same reference numerals, and detailed description thereof will be omitted. Reference numeral 30 denotes an automatic nozzle exchanging device disposed on the side of the substrate 1 in place of the nozzle stocker 101 of the above-mentioned conventional means. The automatic nozzle exchanging device 30 includes a collecting means 31 for the nozzles 6 and a supplying means 32. And consists of. Next, a detailed description will be given with reference to FIGS. 2 and 3.

In FIG. 2, the collecting means 31 is constituted by connecting a large number of nozzle stockers 33 in a drum shape, and the whole shape is a regular polygon.

As shown in FIG. 3, the nozzle stocker 33 has a box shape, its front shape is trapezoidal, and a slider 34 is provided on its lower surface. 35 is a motor 36
A polygonal receiving body 37, which is a rotary shaft driven by (see FIG. 1), is mounted. A guide rail 38 is provided on the outer surface of the receiving body 37, and the slider 34 is provided.
Is slidably fitted on the guide rail 38.

In FIG. 2, a pair of claw members 41 are housed inside the nozzle stocker 33 so as to face each other. The lower end of the claw member 41 is pivotally attached to the pin 42, and the claw member 41 and the claw member 41 are connected by a coil spring material 43.

A claw portion 44 formed on the upper end of the claw member 41
Protrude from the upper surface of the nozzle stocker 33. Further, on the upper surface of the nozzle stocker 33, an insertion port 45 is formed as a nozzle mounting portion into which the nozzle 6 is inserted.

As shown in FIG. 2, the nozzle 6 has a collar portion 6
A nozzle portion 6b is vertically provided from a, and a conical column-shaped receiving portion 6c is provided on the upper surface of the collar portion 6a. Further, the transfer head 5 is provided with a mounting body 21 that fits into the receiving portion 6c. In this mounting body 21,
Recess 6d formed on the wall surface of the receiving portion 6c (see FIG. 5)
There are provided a beer ring 22 that fits in the ring, and a ring-shaped spring member 23 that tightly clamps the beer ring 22. In FIG. 2, when the transfer head 5 descends, the nozzle portion 6b enters the insertion port 45, and the collar portion 6a lands on the tapered upper surface 44a of the pawl portion 44, so that the pawl member 41 is moved to the spring member 43.
It is engaged with the claw portion 44 while expanding outwardly against the spring force of (see FIG. 2).

In FIG. 3, the supply means 32 is constructed by disposing a guide rail 52 continuous with the guide rail 38 on the upper surface of a box-shaped block 51. On the upper side of the block 51, an expanding means 53 having a tapered projecting end 53a is arranged. Further, on the side wall surface of the nozzle stocker 33, the window portion 3 into which the projecting end portion 53a enters
9 is opened.

In FIG. 4, the collecting means 31 and the supplying means 3
Cylinders 48 and 49 are arranged on the side of 2.
When the rod 48a of the cylinder 48 projects, the nozzle stocker 33 on the receiving body 37 is pushed by this, slides on the guide rail 38, and moves onto the guide rail 52 on the block 51. Then, the projection 53a enters the nozzle stocker 33 through the window 39, and the pair of claw members 41 is formed.
The claw member 41 is fitted between the claw member 41 and the claw member 41 to expand the claw member 41 outward, and the engagement state of the collar portion 6a by the claw portion 44 is released (see FIG. 5). In this state, the claw portion 44 is separated from the collar portion 6a, and the nozzle 6 can be taken out from the nozzle stocker 33.

Further, in FIG. 4, the cylinder 49 on the right side is
When the rod 49a of the box protrudes, it is pushed by the rod 49a and the nozzle stocker 33 on the box-shaped block 51 moves to the guide rail 5
It is moved from 2 to above the guide rail 38 and returned to the collecting means 31.

Each nozzle stocker 33 of the recovery means 31
Various kinds of nozzles 6 are mounted on the nozzle stocker. The motor 36 (see FIG. 1) is driven to rotate the collecting means 31, and the nozzle stocker 33 having the nozzle 6 for the next use is
When it is positioned to the side of the block 51 and then the rod 48a of the cylinder 48 is projected, the nozzle stocker 33
Moves onto block 51. Next, the motor 36 is driven to rotate the collecting means 31, and the insertion port 45 positions the empty nozzle stocker 33 to the side of the block 51. As described above, the nozzle stocker 33 of the recovery means 31 and the nozzle stocker 33 of the supply means 32 are close to each other and stand by for nozzle replacement.

The present apparatus has the above-mentioned structure, and its operation will be described below. In FIG. 1, the transfer head 5 moves between the tray feeder 3 and the substrate 1 to transfer and mount the chip P on the substrate 1.

When the type of chip P is changed and the nozzle 6 is replaced, the transfer head 5 is moved directly above the recovery means 31. At this time, as shown in FIG. 2, an empty nozzle stocker 33 stands by at the uppermost position of the collecting means 31, and when the transfer head 5 descends in this state, the nozzle portion 6b of the nozzle 6 is inserted into the insertion port 45. , The collar portion 6a is engaged with the claw portion 44, and the nozzle 6 is collected by the nozzle stocker 33.

Next, the transfer head 5 moves to a position immediately above the nozzle stocker 33 waiting on the block 51. As shown in FIG. 5, the nozzle stocker 33 is equipped with the nozzle 6 for the next use, and the claw member 41 has the expanding means 53.
It is expanded by the projecting end portion 53a.

When the transfer head 5 descends, the beer ring 22 of the mounting body 21 is fitted into the recess 6d of the receiving portion 6c of the nozzle 6 (see the chain line in FIG. 5). When the nozzle replacement is completed in this way, the transfer head 5 restarts the mounting work of the chip P on the substrate 1. Then, the motor 36 is driven,
The collecting means 31 rotates, and the nozzle stocker 33 moves the vacant seat portion E (see FIG. 3) to the side of the block 51.
Prepare to collect the nozzle stocker 33 on the block 51.

Next, the nozzle 6 is taken up by the transfer head 5 and the nozzle stocker 33 on the block 51 that has become empty is ejected by the rod 49a of the cylinder 49, so that the empty seat portion E of the recovery means 31. Returned to.
Next, the motor 36 is driven, and the collecting means 31 rotates about the rotation shaft 35, and the nozzle stocker 33 having the nozzle 6 for the next use is positioned on the side of the block 51 of the supplying means 32.

Next, as the rod 48a of the cylinder 48 projects, this nozzle stocker 33 moves onto the block 51 in preparation for the next nozzle replacement.

As described above, this means is the collecting means 31 for collecting the nozzle 6 mounted on the transfer head 5.
Empty nozzle stocker 33 and the nozzle 6 on the transfer head 5.
Nozzle stocker 33 of supply means 32 for supplying
Are placed close to each other and are on standby for nozzle replacement. Therefore, the moving distance L (see FIG. 4) of the transfer head 5 for nozzle replacement is extremely short, and nozzle replacement must be completed promptly. You can

(Embodiment 2) FIG. 6 is a side view during nozzle replacement, and FIG. 7 is a perspective view thereof.

The collecting means 68 is constituted by connecting a large number of nozzle stockers 33 in a drum shape, and its overall shape is a regular polygon as in the first embodiment. The nozzle stocker 33 has the same structure as that of the first embodiment.

The nozzle stocker 33 is fixed to a receiving body 37, a rotating shaft 35 is mounted at the center of the receiving body 37, and a motor 36 is connected to the rotating shaft 35. That is, each nozzle stocker 33 is rotated by driving the motor 36 as in the first embodiment.

The supply means 69 has the same structure as that of the recovery means 68, and is constructed by connecting a large number of nozzle stockers 33 in a drum shape, and the overall shape is also a regular polygon.

Each nozzle stocker 33 of the supply means 69 is
It is fixed to the receiving body 60, and a rotating shaft 61 is attached to the center of the receiving body 60, and a motor 62 is attached to the rotating shaft 61.
Are connected. That is, each nozzle stocker 33 is rotated by driving the motor 62.

In the nozzle stocker 33 of the supply means 69, the window portion 39 formed on the side wall surface is provided only on one side wall surface by the recovery means 68, whereas the window portion 39 is formed on both side wall surfaces. There is.

Reference numeral 63 denotes a cylinder, which is arranged on the upper side of the supply means 69, and the expanding means 53 of the first embodiment is provided at the tip of a rod 63a having a small diameter. By the operation of the cylinder 63, the expanding means 53 moves back and forth to enter into the window portion 39 of the collecting means 68 and the supplying means 69, hit the claw member 41 of the collecting means 68 or the supplying means 69, and claw member 41. Is expanded outward, and the engagement state of the collar portion 6a of the nozzle 6 by the claw portion 44 is released. In this state, the nozzle 6 can be taken out from the nozzle stocker 33 of the collecting means 68 or the supplying means 69.

The present apparatus has the above-mentioned structure, and its operation will be described below. As shown in FIG. 6, the nozzle stocker 33 having an empty insertion port 45 is previously arranged at the uppermost position of the collecting means 68, and the nozzle stocker 33 having the nozzle 6 to be used next is arranged at the uppermost position of the supplying means 69.

When the nozzles are replaced, the transfer head 5 arrives above the collecting means 68, and then descends to collect the nozzles 6 mounted therein to the insertion opening 45. Next, the transfer head 5 arrives above the supply means 69, and then descends to mount the nozzle 6 of the supply means 69 and take up. Such an exchange operation is similar to that in the first embodiment.

Next, the recovery means 6 is driven by driving the motor 36.
By rotating 8 to position the nozzle stocker 33 having the nozzle 6 to be used next at the uppermost position and driving the motor 62 to rotate the supply means 69, the empty nozzle stocker 33 is positioned at the uppermost position. Prepare for the next replacement. That is, in the present embodiment, unlike the first embodiment, the collecting means and the supplying means are not the division of labor, but the respective means 68, 6
9 serves both as a collecting means and a supplying means depending on the situation of nozzle replacement.

(Embodiment 3) In FIG. 8, this nozzle exchanging device has a horizontally long plate-like nozzle stocker 7 having insertion openings 45a as a plurality of nozzle mounting portions formed on its upper surface.
The collecting means 81 consisting of 1 and the supplying means 82 of the same shape are movably provided on the table 73.

A slider 74 is provided on the lower surface of each nozzle stocker 71, 72. Reference numeral 75 designates two sets of guide rails arranged on the table 73.
Is slidably fitted on the guide rail 75.

A nut 76 is fixed to the lower surface of each nozzle stocker 71, 72. A ball screw 77 is screwed into each nut 76, and a motor 7 is attached to each ball screw 77.
8 and 79 are combined. When the motors 78 and 79 are driven, the ball screws 77 rotate, which causes the nozzle stockers 71 and 72 to move.

The present apparatus comprises a recovery means 81 and a supply means 8
At the time of movement of 2, the motor 78 or 79 is driven to rotate each ball screw 77 in a predetermined direction to slide each stocker 71 or 72 along the guide rail 75 via the slider 74. An empty insertion port 45a for collecting the nozzle 6, and a nozzle 6a for the next use.
And make them stand by. Therefore, also in this case, the movement stroke L of the transfer head 5 for nozzle replacement can be shortened as much as possible. Of course, this one also has both nozzle stockers 71,
By securing an empty insertion port 45a in 72, both nozzle stockers 71, 72 can be used both as a collecting means and a supplying means.

The present invention is not limited to the above-described embodiment, and the point is that a nozzle mounting portion provided with a nozzle for next use provided in the supply means and an empty nozzle mounting portion provided in the recovery means are provided. It suffices if they are arranged so as to be movably close to each other and stand by.

[0047]

As described above, according to the present invention, while the transfer head moves in the XY directions, the chips of the parts feeder are adsorbed by the nozzles mounted on the transfer head to be picked up and positioned by the positioning portion. A nozzle exchanging device in an electronic component mounting device adapted to be transferred and mounted on a substrate, wherein a supply means for supplying nozzles to a transfer head and a nozzle mounted on the transfer head are provided on the side of the positioning portion. A collecting means for collecting is arranged so as to be movable relative to each other, and a nozzle mounting portion equipped with a nozzle for next use provided in this supply means, and an empty nozzle mounting portion provided in the collecting means are provided. Since they are made to stand by in close proximity to each other, the moving distance of the transfer head required for nozzle replacement is extremely short, so nozzle replacement can be completed quickly. .

[Brief description of drawings]

FIG. 1 is an overall plan view of an electronic component mounting apparatus according to a first embodiment of the present invention.

FIG. 2 is an enlarged front view of a collecting means used in the nozzle exchanging device according to the first embodiment of the present invention.

FIG. 3 is an enlarged perspective view of a recovery means used in the nozzle exchanging device according to the first embodiment of the present invention.

FIG. 4 is a side view of the nozzle exchanging device according to the first embodiment of the present invention during nozzle exchanging.

FIG. 5 is a front view showing a nozzle take-up standby state of the nozzle exchanging device according to the first embodiment of the present invention.

FIG. 6 is a side view of the nozzle exchanging device according to the second embodiment of the present invention during nozzle exchanging.

FIG. 7 is an enlarged perspective view of a nozzle exchanging device according to a second embodiment of the present invention.

FIG. 8 is a perspective view of a nozzle exchanging device according to a third embodiment of the present invention.

FIG. 9 is an overall plan view of a nozzle exchanging device according to conventional means.

[Explanation of symbols]

 1 Substrate 2 Positioning Part 3 Parts Feeder 5 Transfer Head 6 Nozzle 30 Nozzle Exchanger 31 Collecting Means 32 Supplying Means 45 Nozzle Attaching Part 45a Nozzle Attaching Part 68 Supplying Means 69 Also Comprising Collecting Means 81 Collecting Means Supplying means also serving as means 82 Recovery means also serving as supply means P chip

Claims (1)

Claims: 1. While the transfer head moves in the XY directions, a chip of a parts feeder is adsorbed by a nozzle mounted on the transfer head to be picked up, and a substrate positioned on a positioning portion is picked up. A nozzle exchanging device in an electronic component mounting device configured to be transferred and mounted, wherein a supply means for supplying nozzles to a transfer head and a recovery device for recovering the nozzles mounted on the transfer head, beside the positioning section. The means and the nozzle mounting portion provided in the supply means and the empty nozzle mounting portion provided in the collecting means are arranged close to each other. A nozzle exchanging device for an electronic component mounting device, characterized in that it is made to stand by.