Metal working – Means to assemble or disassemble – Means to assemble electrical device
Reexamination Certificate
2000-02-25
2003-04-22
Werner, Frank E. (Department: 3652)
Metal working
Means to assemble or disassemble
Means to assemble electrical device
C029S740000, C029S832000, C414S416050, C414S416010, C414S752100, C414S225010, C901S047000, C324S537000
Reexamination Certificate
active
06550133
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a surface mounting apparatus in which a mounter is, at its one side, installed with a tape reel feeder and is, at its other side, installed with a tray feeder so that various semiconductor devices can be easily and rapidly supplied.
2. Description of the Prior Art
There has been a great deal of developments relating to surface mounting technology using a surface mounting apparatus for manufacturing a Printed Circuit Board (PCB).
The surface mounting apparatus is for mounting a surface mounting device on a PCB. The mounting apparatus is supplied with the surface mounting devices from a device supplier. The mounting apparatus then mounts the devices at mounting positions on the PCB.
Surface mounting apparatus can be divided into a high-speed apparatus and a general-use apparatus by function. The high-speed apparatus can accomplish a high-speed mounting operation because it is constructed to assemble many devices in a short time. Therefore, it has a merit in that it complies with mass production, however, its mounting precision is not good.
Meanwhile, the general-use apparatus can accomplish a high-precision because it is constructed to comply with many devices. Therefore, it has a merit in that it complies with a medium and small production quantities, however, its productivity is not good because of its low-speed mounting operation.
The surface mounting apparatus comprises a feeder (referred to as “a tape feeder” as below) for supplying a device to be mounted. The apparatus also includes an X-Y gantry for determining a working position, a conveyor for carrying a PCB to be worked, and a head for picking up, in regular sequence, the device from the feeder and for mounting the device on the PCB.
In general, the surface mounting apparatus serves to mount an electronic device on the PCB and can be called a mounter.
FIG. 1
is a perspective view showing a conventional surface mounting apparatus.
The conventional surface mounting apparatus is constructed such that a frame assembly
100
is installed to support the apparatus and is, at its upper portion, installed with a base assembly
102
. The base assembly
102
is, at its upper portion, installed with a conveyor system
104
for feeding the printed circuit board and is, at its right side, installed with a tape reel feeder
122
for supplying various semiconductor devices.
The conveyor system
104
is, at its upper portion, installed with an X-Y gantry
106
for moving in left, right, forward and backward directions for mounting electronic devices on the PCB. The X-Y gantry
106
constructed with a gantry frame
109
to support the X-axis and Y-axis.
The gantry frame
109
is installed with a mounter head assembly
108
for mounting the devices on the PCB.
The tape feeder
122
is operated such that when a PCB is supplied by the conveyor system
104
, and a tape reel serves a device to a reel receiving unit, the mounter head assembly
109
moves to pick up the semiconductor device and to mount the device on the PCB.
The mounter head assembly
109
is installed with a mounter head
107
, which is installed with a suction nozzle
120
for sucking the device. The mounting head
107
is also installed with a vision unit
114
for checking whether the sucked device is mounted correctly on the PCB. Furthermore, the conveyor system
104
is installed with a stopper assembly
110
for stopping the PCB at the working position and is installed with a pusher
116
for moving the PCB upward and is, at its lower portion, installed with a magnet
118
for fixing the pusher
116
to the base
102
.
However, the conventional surface mounting apparatus having the above construction has problems. Because the electronic deices are supplied only by the tape feeder, mounting operations can not be rapidly accomplished.
Furthermore, when different-sized devices must be mounted on a PCB, a working operation must be stopped to allow new tape reels served with appropriate sized devices to be hung to the tape reel receiving unit of the tape feeder.
SUMMARY OF THE INVENTION
The present invention solves the above problems. It is an object to provide a surface mounting apparatus which, at its one side, is installed with a tape reel feeder and is, at its other side, installed with a tray feeder so that various semiconductor devices can be easily and rapidly supplied.
To accomplish the above object, the present invention provides a surface mounting apparatus provided at its one side with a tape feeder and provided at its other side with a plurality of trays served with various semiconductor devices.
The tray feeder comprises: a supplying tray for supplying semiconductor devices to be mounted on a printed circuit board; a serving tray for positioning the device after it has been picked up by a mounter head; and a vision device for detecting whether the picked up device has the required mounting pins.
The tray feeder may also include a transfer device for feeding the trays served with the semiconductor chips. The transfer device includes a tray holding unit for moving a tray.
REFERENCES:
patent: 5379514 (1995-01-01), Okuda et al.
patent: 5456003 (1995-10-01), Yamamoto et al.
patent: 5894657 (1999-04-01), Kanayama et al.
patent: 5907900 (1999-06-01), Okazaki et al.
patent: WO 98/36629 (1998-08-01), None
Cho Jae Hyuk
Seo Jae Bong
Fleshner & Kim LLP
Mirae Corporation
Werner Frank E.
LandOfFree
Surface mounting apparatus installed with tray feeder does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Surface mounting apparatus installed with tray feeder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface mounting apparatus installed with tray feeder will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3091277