JPS59227612A - Buffer stocker device for circuit board - Google Patents

Abstract

PURPOSE:To enable the first-in-first-out of a circuit board to be performed by making a stocker box in a buffer stocker device movable together with stocker shelves, and controlling said movements by means of a logic. CONSTITUTION:A stocker box 3 placed in a buffer stocker device 2 is made automatically movable up and down, and many shelves 4 are provided in the box 3 and further the shelves 4 made vertically movable. Further, the boards are conveyed into the shelves 4 by making use of a means 5, while the boards are conveyed out from the shelves by making use of a means 6. Further, the full load of the boards on the shelves and stocker shelf positions, etc., are detected by making use of means 20, 21, while a board input/output into/from the device 2 is controlled by a logic, and board shelf positions in the device 2 are also controlled. Namely, the box 3 is made movable together with the shelves 4 in the device 2, and their movements are made controlable by the logic, enabling the first-in-first-out of a circuit board to be performed.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a buffer stocker device for first in, first out circuit boards.

Structure of the conventional example and its problems In the conventional buffer stocker device, as shown in FIG. 1, the circuit boards are 1a, 1b, .
When it flows in the order of g, buffers) y car device 30
As shown in the figure, the materials were stocked one after another, and then removed using a buffer stocker device using a first-in, last-out method.

Dropping is not particularly a problem when the lot of circuit board types is large, such as in low-mix, high-volume production, but when the same product is continuously produced in small lots, such as in high-mix, low-volume production, In the case of buffer stocker equipment, the size of product lots is further subdivided by the buffer stocker equipment, and the equipment for the next process of the buffer stocker equipment must be frequently changed, and equipment product types change frequently. There was a problem in which the switching loss was extremely poor.

OBJECTS OF THE INVENTION Therefore, in view of the above-mentioned drawbacks, the present invention invents a buffer stocker device using a first-in, first-out method that does not change the order in which circuit board product lots flow. This is to prevent unnecessary equipment switching ports and slots from being created by segmenting the equipment.

Structure of the Invention The present invention provides an apparatus for stocking circuit boards, which includes a large number of shelves for stocking boards, a mechanism means for continuously moving and positioning each column up and down in the stocker, and a device for storing the entire stocker box in the stocker. Mechanism means for vertically moving and positioning; Mechanism means for inputting and conveying substrates to the stocker shelf; Mechanism means for output conveying substrates from the stocker; Mechanism means for detecting fullness of substrates, stocker shelf position, etc.; This is a first-in, first-out stocker device for circuit boards that controls board input/output and logic that controls the board shelf position within the stocker. When products are transferred in lots and equipment is automatically switched depending on the product, the lots are not unnecessarily segmented and switching losses are minimized.
This has an extremely large effect.

DESCRIPTION OF THE EMBODIMENTS This embodiment will be explained below based on FIG. 2 and subsequent figures. Second
The figure shows a line for mounting electronic components on circuit boards. 1
1 is a circuit board, 1o is a transport facility for transporting the circuit board 1, 1
1.12 is equipment for mounting electronic components on the circuit board 1. 2 is a buffer stocker device of this embodiment. When the circuit boards 1 come in as shown in this figure, electronic components are mounted on the circuit boards 1 in the equipment 11, and then, when the board 1 is full on the transfer equipment 10, the boards are placed in the buffer stocker device 2. 1 are sequentially stocked and then sequentially removed, and the equipment 12 mounts the components on the board 1.

FIG. 3 shows a process in which circuit boards 1 are sequentially stocked in a buffer stocker and sequentially removed.

In FIG. 3A, 1a and 1b are circuit boards.

2 is a buffer stocker device, and 3 is a stocker box in this buffer stocker device 2, which can be automatically moved up and down and has a mechanical means for outputting and transporting the circuit board 1. Reference numeral 4 denotes a stocker shelf 5 in the stocker and a stocker shelf in the box 3, which has a large number of shelves.

This stocker shelf 4 can stock a large number of circuit boards 1.
is configured so that it can be moved up and down.

Reference numeral 6 denotes a mechanical means for inputting and transporting the circuit board 1 to the PanFast picker device 2. Reference numeral 6 denotes a mechanical means for outputting and transporting the circuit board 1 from the buffer stocker device 2. 1o is 1
This is equipment that transports circuit boards. Suppose that the circuit board is initially in state A.

The circuit board 1C is carried into the stocker shelf 4 in the stocker device 2 by the device 5, and is placed in one shelf.

Next, in order to put one circuit board 1d into the buffer stocker device 2, the stocker shelf 4 is lowered by one step, resulting in the state shown in (c). Next, the circuit board 1d is placed in the buffer stocker device 2, and the second state is achieved. Hereinafter, if there is a board to be carried in, repeat steps C and 2 in sequence. Moreover, when carrying out the circuit board 1 from the buffer stocker device 2, the stocker box 3 is moved to the state shown in E. Next, the circuit board 1C is carried out from the buffer stocker device 2 by the device 6, and the circuit board 1C is brought into the state shown in FIG. Next, in order to carry out the circuit board 1d, the stocker shelf 4 is moved to the state shown in FIG.

Finally, the circuit board 1d is carried out from the buffer stocker device 2 by the device 6 and placed in the state shown in FIG.

The mechanical means will be explained based on FIGS. 4 to 6. Fourth
In the figure, reference numeral 6 indicates a drive source for a mechanism means for inputting and transporting substrates, 8 a drive source for a mechanism means for moving the stocker shelf 4 up and down, and 9 a drive source for a mechanism means for outputting and transporting substrates from the buffer stocker device. It is.

In FIG. 6, reference numeral 20 denotes a board fullness detection means, and 21 a board stocker shelf position detection means.

FIG. 5 is a sectional view of the buffer stocker device shown in FIG. 6.

In FIG. 4, the substrate 1e is introduced into a position 11 by means of a device 5. In FIG. Next, in Fig. 5, the stocker shelf 4 is sequentially 1g, 1h,
Move it to position 1i and prepare to carry out the substrate. next,
In FIG. 6, the stocker box 3 is moved so that the substrate 1f on the unloading side and the substrate 1q inside the stocker box are at the same height, and the substrate 1q is transported to the position 1f71z-heat by the substrate unloading device 6. . Thereafter, the substrates are sequentially carried out as shown in FIG.

Figure 7 shows how to control input/output to the stocker, such as board fullness, board stocker shelf position, etc.

A flowchart of logic for controlling board shelf positions within a stocker is shown.

With the above configuration, substrates are placed in the buffer stocker on a first-in, first-out basis.

Effects of the Invention As described above, the present invention allows the stocker box to be moved together with the stocker shelf in the buffer stocker device, and the logic that controls the movement allows it to move substrates, which was not possible with conventional buffer stocker devices. It is a product that allows the first-in, first-out method to be used, and is a valuable dog that can be used in today's era of high-mix, low-volume production.

[Brief explanation of the drawing]

``Products'' Figure 1 is a diagram of the operation state of a conventional buffer stocker device, Figure 4 is a driving relationship diagram of the buffer stocker device of the present invention, Figure 6 is a cross-sectional diagram of the buffer stocker device, and Figure 6 is a diagram of the buffer stocker device. FIG. 7 is a diagram showing the relationship between the stocker device and the device for carrying in substrates, and is a flowchart of the logic for controlling first-in first-out of substrates in the buffer device. 1... Circuit board, 2... Buffer stocker device, 3... Buffer stocker hook, 4... Panfast stocker shelf, 5...
... Board carrying-in means, 6... Board carrying-out means, 10
. . . Substrate transport device, 20 . . . Substrate full detection device, 21 . . . Stocker shelf position detection device. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 3
Fig. 2 Fig. 3 Fig. 3 Fig. 5 Fig. 6 Fig. 6 Fig. 7
Power 1Yes
YesTOP Su0 Shimakazeya 1 6 SuYtsuo J15 1 through 1 provisional 1 Chichi omushi
Basic inkstone to 1-H
211N0 Car+7 11 lol input method - Yes Stone - 5 + 1' + scale γ Naxis 11v1 Ikl - H ' Toad 4 and 59-

Claims (1)

[Claims] There are a number of shelves for stocking boards, and a mechanical means for continuously moving and positioning each column up and down in the stocker;
Mechanical means for moving and positioning the entire stocker box within the stocker, mechanical means for inputting and transporting boards to the stocker shelf, mechanical means for outputting and transporting boards from the stocker, and determining the fullness of boards and the stocker shelf position. A buffer stocker device for circuit boards, which is comprised of a means for detecting a circuit board, etc., and logic for controlling board input/output to the stocker and controlling the position of a board field within the stocker.