JP2690644B2 - How to transfer magazines for storing workpieces - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a series of devices in which a magazine in which a predetermined number of parts to be processed such as lead frames, ceramic packages, or substrates on which electronic parts or the like are mounted are accommodated is arranged in a line. In order to carry out the magazine, which is loaded into the line head device in the above item, and in which the parts to be machined are stored again after the end of the process in the device, is unloaded from the device and sequentially transported to each device in the next process in the same procedure. The present invention relates to a method of transporting a magazine for storing processed parts.

[0002]

2. Description of the Related Art For example, in an assembly process for manufacturing a semiconductor device, a magazine accommodating a lead frame is sequentially loaded into a series of devices such as a die bonding device, a curing device and a wire bonding device which are arranged in line. However, as a conveying means of the magazine for sequentially supplying the magazine in which each lead frame is re-stored after the process in each device to the device in the next process, a ceiling monorail system as shown in FIG. The autonomous guided vehicle system as shown is generally adopted.

FIG. 9 shows a ceiling monorail (corresponding to the arrangement direction of a die bonding apparatus (1), a curing apparatus (2) and a wire bonding apparatus (3) arranged in a line array on the ceiling portion ( Fig. 5 shows a front view of a schematic configuration in which the monorail vehicle (4) is moved along 5). The monorail vehicle (4) holds a magazine (6) containing a predetermined number of lead frames (not shown),
Moreover, it is provided with an arm (7) which expands and contracts toward each of the devices (1) to (3). On the other hand, in each of the devices (1) to (3), a magazine loader unit (8) that takes out lead frames one by one from the magazine (6) while driving them up and down with a pitch, and works the lead frames taken out one by one. A frame transfer mechanism (9) for transferring to the station and to the magazine unloader section (10) after the work is completed,
A magazine unloader unit (10) is provided for accommodating the lead frames sent by the frame transfer mechanism (9) one by one in the magazine (6) while vertically driving the pitch. Therefore, the monorail vehicle (4) stops facing the magazine loader unit (8) of the first die bonding apparatus (1), the arm (7) extends and the magazine (6) moves to the magazine loader unit (8). To the magazine unloader section (10) of the apparatus (1).
When a predetermined number of lead frames to which the semiconductor chips are die-bonded are completely stored in the magazine (6), the arm (7) extending the magazine (6) grips and retracts the magazine. The same operation is repeated by transporting to the apparatus (2) in the next step, and the magazine (6) after the step of the third wire bonding apparatus (3) is discharged.

FIG. 10 shows a guided vehicle (11) on a guided vehicle traveling passageway (12) laid along the respective devices (1) to (3).
FIG. 10 shows a schematic plan view of a structure in which the s move. Although not shown, the transport vehicle (11) is provided with arms for supplying and unloading the magazine (6) to and from the respective devices (1) to (3) as indicated by arrows, and the magazine is substantially the same as in FIG. (6) is conveyed.

[0005]

However, in the transportation means shown in FIG. 9, when the ceiling monorail (5) is initially installed, the transportation of the ceiling monorail (5) is sufficient to cope with the line reorganization expected in the future. It needs to be installed in length. On the other hand, in the transport means of FIG. 10, in addition to the line installation space for each of the devices (1) to (3), an extra space for the transport vehicle travel passage (12) and the transport vehicle (1
There is a drawback that a large installation space is required as a whole including the space between 1) and each device (1) to (3).

In any means, the delivery position of the magazine (6) is determined substantially fixedly by the devices (1) to (3) installed in line arrangement, so that the ceiling monorail (5 ) Or the carriage passage (12) needs to be installed at a relatively accurate position with respect to each of the devices (1) to (3), and high positioning accuracy is required. Therefore, it is not possible to easily change the line composition. Moreover, normally, only one monorail vehicle (4) or carrier vehicle (11) is provided for one line, and it must be carried out after the magazine (6) has been carried out from the apparatus (3) in the final step. The carriage of a new magazine (6) cannot be started, and in each of the devices (1) to (3), after the supply of all the lead frames in the magazine (6) is completed, the empty magazine is removed. Since the transfer of the lead frame to the magazine unloader section (10) is started after the process is completed, the number of conveyances of the magazine (6) per unit time per line is small, and the magazine (6) can be replaced. It is extremely inefficient because the total required time is long. Further, since equipment other than the line-arranged devices (1) to (3) is required, there is a problem that the cost is high.

Therefore, the present invention does not require an extra space other than the installation space of each device installed in a line array, and can significantly reduce the total time required for magazine exchange,
It is a technical object to provide a method of transporting a magazine for storing workpieces that can change the line knitting without requiring highly accurate positioning.

[0008]

According to the present invention, as a technical means for achieving the above object, a magazine for storing a workpiece is conveyed by the following method. That is, a magazine loader unit and process for supplying workpieces such as lead frames in the magazine while holding the magazines at the same height position in a series of devices arranged in a line array and driving the magazines up and down. Arrangement of a conveyor for loading and unloading, which are individually opposed to the magazine unloader section for storing the processed parts in the magazine after completion, and a conveyor for connecting the both conveyors so as to form a series of transportation paths. Is installed and the
The work part transfer mechanism is installed above the bare carrier.
In each of these devices, the magazine transferred by the carry-out conveyor of the preceding process device to the carry-in conveyor of the device is used by the magazine loader section to make one end of the workpiece transport mechanism. The magazines to be processed by the magazine unloader unit , the empty magazines being transferred to the component supply position arranged in the unit.
Transferred to the component storage position arranged at the other end of the product transfer mechanism, after the process is completed, an empty magazine is transferred onto the carry-in conveyor by the magazine loader section, and the carry-out conveyor by the carry conveyor. In addition to the above, the magazine in which the parts to be processed are stored is transferred onto the carry-out conveyor by the magazine unloader unit and also transferred onto the carry-in conveyor of the post-process apparatus.

[0009]

In each device, the vertical movement stroke of the intended function of each of the existing magazine loader unit and magazine unloader unit is extended, and the carry-in conveyor and the carry-out conveyor are respectively arranged within the extended stroke. Moreover, the carry-in conveyor and the carry-out conveyor are connected by a carrying conveyor. Further, all three types of conveyors provided in each device are arranged at the same height position to form a series of magazine transport paths for the entire line. Therefore, each device itself is equipped with a magazine transport mechanism and can be integrated with the control of the device body, so no extra space other than the installation space for each device is required, and there are three types of conveyors in each device. Since they are arranged independently, line knitting can be changed without requiring high positioning accuracy.

In each device, the magazine on the carry-in conveyor can be individually transferred to the component supply position by the magazine loader unit, and the empty magazine on the carry-out conveyor can be individually transferred to the component storage position by the magazine unloader unit. The magazines can be replaced at the same time in the device, and the total time required for magazine replacement can be greatly reduced.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 2 shows a schematic configuration of a series of devices (20a) to (20n) arranged in a line array. Each of the devices (20a) to (20n) is located at the same height position in the lower part of each device. The carry-in conveyor (22) and the transfer conveyor (2) that are individually driven
3) and the carry-out conveyor (24) are the magazine (6)
Are arranged in series so as to divide the conveyance path into three. Therefore, as shown in the figure, each device (20a) to (20a)
By simply arranging n) in line and arranging them side by side, the three types of conveyors (22) to (24) are continuously arranged in a line to form a magazine transport path as a line.

In FIG. 1 showing the details of each of the conveyors (22) to (24), the carry-in conveyor (22) corresponds to the existing magazine loader section (25) of each of the devices (20a) to (20n). Is disposed underneath, and similarly, an unloading conveyor section (24) is disposed below the magazine unloader section (27) corresponding to the existing magazine unloader section (27), and a carrying conveyor (23) is a carrying-in conveyor (22). And the unloading conveyor (24) are connected to each other.

The magazine loader unit (25) holds the magazine (6) on a pair of clampers (29) and pitch-drives the vertical stroke range from the solid line position to the one-dot chain line position in FIG. It serves an intended function of supplying each lead frame (28) in the magazine (6) one by one onto the frame transfer mechanism (26) by an extruding mechanism section (not shown) for each pitch drive. The vertical movement stroke is large so that the magazine loader section (25) can be transferred to a position where the magazine (6) is placed on the carry-in conveyor (22) indicated by the chain double-dashed line. Therefore, the carry-in conveyor (22) is wound around the rollers so as to form a pair of recesses into which a pair of clampers (29) are loosely inserted, as shown in FIG.

The frame transfer mechanism (26) transfers the lead frames (28) taken out one by one from the magazine (6) of the magazine loader section (25) to a work station (not shown) to complete the working operation. Afterward, they are carried out and stored so as to be stored one by one in the magazine (6) of the magazine unloader section (27). In addition, the magazine unloader section (2
Similar to the magazine loader unit (25), 7) holds the magazine (6) on the pair of clampers (30) and pitch-drives the vertical stroke range from the one-dot chain line position to the solid line position in FIG. By doing so, the lead frame (28) conveyed by the frame conveying mechanism (26) at each pitch drive fulfills an intended function of accommodating the lead frames (28) one by one in the magazine (6). The vertical movement stroke is increased so that the magazine (6) is moved to a position where the magazine (6) is placed on the carry-out conveyor (24) indicated by the chain double-dashed line. The clamper (30) is wound around the roller so as to form a pair of recesses into which the clamper (30) is loosely inserted.

Next, a method of transporting the magazine (6) according to the above embodiment will be described with reference to FIGS. 3 to 8. First, in FIG. 3, in the apparatus (20b), the magazine loader unit (25) pitch-drives the magazine (6b) from the alternate long and short dash line position to the solid line position so that all lead frames (2
8 shows that the supply of 8) is completed, and the magazine unloader section (27) has driven the magazine (6c) from the one-dot chain line position to the solid line position where the last lead frame (28) should be accommodated. At this time, the device (20
The conveyor (2) for carrying out the device (20a) in the previous step of b)
4) The next magazine (6a) in which the lead frame (28) has been housed is positioned above.

Then, as shown in FIG.
In b), the magazine loading unit (25) is moved downward to place an empty magazine (6b) on the carry-in conveyor (22), and the empty magazine (6b) is driven by driving the carry-in conveyor (22). Indicates the conveyor (2
3) sent up.

Next, as shown in FIG. 5, in the process in which this empty magazine (6b) is transferred by the conveyer (23), the lead frame (28) processed by the apparatus (20a) in the previous step is processed. The magazine (6a) in which is stored is transferred onto the carry-in conveyor (22) indicated by the solid line by driving the carry-out conveyor (24) and the carry-in conveyor (22) of the apparatus (20b). At this time, the clamper (29) of the magazine loader section (25) is loosely inserted in the recess of the carry-in conveyor (22), and the magazine load section (25) moves up to raise the magazine on the carry-in conveyor (22). (6a) is a lead frame (28) indicated by a chain line
Is set to the supply start position. Meanwhile, the device (20b)
By moving the magazine unloading unit (27) downward, the magazine (6c) in which the processed lead frame (28) has been stored is placed on the unloading conveyor (24).

Subsequently, as shown in FIG. 6, the magazine (6c) in which the lead frame has been stored is moved to the carry-out conveyor (2).
4) The empty magazine (6b) transferred to the carry-in conveyor (22) of the post-process apparatus (20c) as indicated by the arrow in 4) and transferred to the carry conveyor (23).
Are transferred onto the carry-out conveyor (24) of the device (20b).

Further, as shown in FIG. 7, when the empty magazine (6b) is transferred onto the carry-out conveyor (24) of the device (20b), it is moved by the magazine unloader section (27) of the device (20b). The lead frame (28) is moved up to the storage start position of the lead frame (28) indicated by the alternate long and short dash line, and then the supply of the lead frame (28) is started from the magazine (6a) on the magazine loader unit (25). In this embodiment, the processing is not performed in the device (20c), and therefore, the magazine (6c) in which the lead frame (28) is stored is the carrying conveyor (2) of the device (20c).
Driven by 2), the conveyor (2
3) It is transferred to the upper part, further passes on the carry-out conveyor (24), and is conveyed to the apparatus (not shown) in the next step. Then, the lead frame (28) is supplied from the magazine (6a) set as shown in FIG. 8, and the processed lead frame (28) is stored in the magazine (6b). This state is the same as in FIG. 3, and the same operation is repeated thereafter.

[0020]

As described above, according to the method of transporting a magazine for storing workpieces of the present invention, the existing magazine loader section and magazine unloader section are used for each apparatus arranged in a line , and each apparatus is provided with: Each Magagi
Carry-in conveyor and magazine unloader corresponding to the loader section
A conveyor for unloading that corresponds to the loader section, and loading / unloading of these
Provide a conveyor to connect the output conveyor and
A magazine was installed in each device from the beginning of the lined devices.
After passing through three types of conveyors, they are sequentially carried to the equipment for the next process.
Since it was sent, the line installation switch by each device
Without needing extra space other than pace,
Assembly without the need for a separate transport mechanism
It is possible to configure a series of magazine transport paths for the entire process.
You. Moreover, the magazine transport mechanism can be controlled integrally with each device.

Further, all three types of conveyors provided in each device can be arranged at the same height position to form a series of magazine transport paths for the entire line, and three types of conveyors can be installed in each device. Since they are arranged independently,
It is possible to change line knitting without requiring high positioning accuracy.

In each device, the magazine on the carry-in conveyor can be individually transferred to the component supply position by the magazine loader unit, and the empty magazine on the carry-out conveyor can be individually transferred to the component storage position by the magazine unloader unit. The magazines can be replaced at the same time in the device, and the total time required for magazine replacement can be greatly reduced. Further, since the magazine passes through each device, there is an advantage that maintenance is easy.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part mechanism according to an embodiment of the present invention.

FIG. 2 is an overall schematic configuration diagram of the same.

FIG. 3 is an explanatory diagram of a first state of a magazine transport operation according to the above.

FIG. 4 is an explanatory diagram of a second state following the first state of the magazine transport operation of the same.

FIG. 5 is an explanatory diagram of a third state following the second state of the carrying operation of the magazine.

FIG. 6 is an explanatory diagram of a fourth state following the third state of the magazine transport operation of the same.

FIG. 7 is an explanatory diagram of a fifth state following the fourth state of the carrying operation of the magazine.

FIG. 8 is an explanatory diagram of a first state following the fifth state of the magazine transport operation of the above.

FIG. 9 is a schematic front view of a conventional magazine conveying unit.

FIG. 10 is a schematic plan view of another conveying means of the conventional magazine.

[Explanation of symbols]

 6, 6a to 6c Magazines 20a to 20n Device 22 Carry-in conveyor 23 Carrying conveyor 24 Carry-out conveyor 25 Magazine loader section 27 Magazine unloader section 28 Lead hood (workpiece part)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takashi Okamura 22-22 Nagaike-cho, Abeno-ku, Osaka-shi, Osaka Inside Sharp Corporation (56) Reference JP 58-6832 (JP, A) 104921 (JP, U)

Claims (1)

(57) [Claims] 1. A magazine loader for supplying a work piece such as a lead frame in a magazine while holding each magazine at the same height position in a series of devices arranged in a line array and vertically driving the magazine. Section and a magazine unloader for storing parts to be processed after completion of the process, a series of transfer paths are formed by a conveyor for carrying in and a conveyor for unloading, and a conveyor for connecting the two conveyors, which face each other. If you arrange so that
The workpiece transfer mechanism above the transfer conveyor.
Is arranged in parallel with the conveyor for carrying, and in each of these devices, the magazine transferred to the carrying-in conveyor of the device by the carrying-out conveyor of the preceding process device is processed by the magazine loader unit.
The component is transported to the component supply position arranged at one end of the component transport mechanism , and the empty magazine on the transport conveyor is moved by the magazine unloader unit to the other end of the workpiece transport mechanism.
The parts are transferred to the parts storage position, and after the process is completed,
An empty magazine is transferred to the carry-in conveyor by the magazine loader unit, and is transferred to the carry-out conveyor by the carry conveyor, and a magazine in which the parts to be processed are stored is carried out by the magazine unloader unit. A method for transporting a magazine for storing parts to be processed, characterized in that the magazine is transported to a conveyor and is also transported to the carry-in conveyor of a post-process apparatus.