JPH06102484B2 - Substrate transfer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a substrate transfer device for transferring a substrate to a device for performing a certain work, for example, an electronic component, particularly a chip-shaped electronic component, is fixed to a printed circuit board. In this case, the present invention relates to a substrate transfer device suitable for an automatic application device for applying a coating agent such as an adhesive to be applied in advance.

(B) Conventional technology Conventionally, when the substrate transfer device is used as an automatic coating device for coating agent such as adhesive, for example, in the case of a device that simultaneously coats two substrates, as shown in FIG. 11 and FIG. Two substrates (2C) (2D) are set on the table (1) at a predetermined interval, and two substrates (2A) (2B) are prepared in advance on the supply conveyor (5) that conveys the substrates. I saved it.

(C) Problems to be solved by the invention In the case of the conventional technology, the space for the following two substrates is required on the supply conveyor (5), and the total length of the device (L _{1 in} Fig. 11) is also the substrate size. In case of a large value, the space for the substrate is 4 pitches, and the space cannot be used efficiently.

In addition, the feed claw (7) that sends the substrate from the supply conveyor (5) to the XY table (1) and discharges it from the XY table (1)
As for the feed member (6) which has a large total length (l _{1 in} Fig. 11) because the pawls (7) are installed at four places, the drive source for moving the large feed member (6) also has a large output. However, it has the drawback of being poor in durability and needing

Therefore, an object of the present invention is to suppress the entire length of the apparatus as much as possible, to effectively utilize the floor area in the factory, and to reduce the size of the feeding member.

(D) Means for Solving the Problems Therefore, the present invention provides a workbench on which a plurality of substrates are placed at a predetermined interval, and an upstream device located at least upstream or downstream of the workbench. A compare that conveys a single substrate that is conveyed to a certain position, and a lifter mechanism that can move up and down and holds the substrate above the conveyor when moving up and moves the substrate onto the conveyor when moving down. When,
One board on the conveyor and feed claws that come into contact with the rear end portions of a plurality of boards on the workbench are provided, and after the work on the boards on the workbench is completed, each board is pitched by one board unit. A feed member for feeding back one pitch after being simultaneously sent to the downstream side by one pitch, and repeatedly feeding the substrate transferred to the conveyor by the downward movement of the lifter mechanism and the plurality of substrates on the workbench fed by the one pitch by one pitch. Is provided.

(F) Embodiment One embodiment of the present invention will be described in detail below with reference to the drawings.

1 and 2 respectively show a plan view and a front view of the embodiment.

(11) attaches electronic parts, especially chip-shaped electronic parts 2
An XY table as a work table on which a plurality of substrates are placed at predetermined intervals is horizontally moved to an arbitrary position by an X-axis motor (13) and a Y-axis motor (14).

(15) is a supply conveyor which is located on the left side of the XY table (11) and conveys the substrate, and includes a motor (not shown) and a drive pulley (not shown) as shown in FIGS. 7 to 10. )When,
The driven belt comprises a round belt (22) stretched between the driven pulleys (21) and a conveyor side plate (25) supporting the conveyor. Here, in this embodiment, the round belt (22) is used as the conveying means, but this may be a flat belt, a roller, a chain or the like. Further, a screw hole (24) for screwing the shaft (23) of the driven pulley (21) is formed on the side of the conveyor side plate (25), and the support portion (19A) of the lifter (19) is lowered. A cutting section (26) for cutting is provided on the upper part of the conveyor side plate (25).

Reference numeral (16) is a feeding member, which conveys substrates on the supply conveyor (15) onto the XY table (11) and conveys a plurality of substrates on the XY table (11) onto the discharge conveyor (27). It has a feed claw (17).

Reference numeral (18) is a ball spline shaft, which penetrates the feed member (16), and the feed member (16) horizontally moves along the ball spline shaft (18) when a motor (not shown) rotates. After the substrate is transferred, a cylinder (not shown) is driven to rotate the ball spline shaft (18) via a rotary lever (not shown), so that the feed member (16) is moved up and down.

The pair of front and rear support parts (19A) of the lifter (19) are adjusted by moving the front and rear of the lifter (19) close to or away from each other in accordance with the sizes of large and small substrates (not shown) like the supply conveyor (15). it can. Further, the lifter (19) is connected to a linear motion bearing (not shown) to support the substrate to a supporting portion (19).
It is held above the supply conveyor (15) by A) and moved up and down by the linear reciprocating device (20).

The linear reciprocating device (20) moves a connecting rod connected to a motor (not shown) up and down by rotating the motor, and reciprocates through the connecting rod to a linear motion bearing (not shown) and It is transmitted to the lifter (19). The lifter (19) and the linear reciprocating device (20) are collectively referred to as a lifter mechanism.

Reference numeral (28) is a coating nozzle for coating a plurality of substrates mounted on the XY table (11) with a coating agent such as an adhesive for fixing electronic components, particularly chip-shaped electronic components and the like.

The discharge conveyor (27) has the same structure as the supply conveyor (15) and conveys the substrate after the coating operation.

The operation of the present invention will be described in detail below with reference to the drawings.

In FIG. 1, the lifter when the first substrate (12A) comes to a predetermined position of the supply conveyor (15) conveyed from the left side.
(19) is descending and as shown in Figs. 9 and 10, the lifter
The substrate (12A) is conveyed to a position above the support portion (19A) of (19).

After that, the lifter (19) is lifted by the linear reciprocating device (20) while placing the substrate (12A) on the supporting portion (19A) as shown in FIGS. 7, 8 and 2. ) Is held above the supply conveyor (15).

Then, when the second board (12B) flows, it stops at a predetermined position on the supply conveyor (15). In this way
When the two substrates (12A) and (12B) are set on the supply conveyor (15) side, the state shown in FIG. 2 is obtained.

Further, the two substrates (12c) (12D) on the XY table (11) coated with a coating agent such as an adhesive by the coating nozzle (28) are feeding members.
The feed claw (17) attached to (16) conveys the substrate (12B) on the supply conveyor (15) together with the substrate (12B) to the right in FIG. 1 by the first feeding operation of the feed member (16). At this time, it becomes as shown in FIGS.

At the same time, the substrate (12A) held above the supply conveyor (15) by the lifter (19) is
(19) is lowered and the excised part (26) at the upper part of the conveyor side plate (25)
Round belt of supply conveyor (15) by getting inside
(22) Placed on top.

After the feeding member (16) has moved by one pitch, the feeding member (16) is lifted by rotating the ball spline shaft (18) to separate the feeding claw (17) from the substrate, Ball spline shaft (18) with (16) raised
1 is horizontally moved to the left in FIG. Then, in the same manner as the above method, the ball spline shaft (18) is rotated and the feed member (16) is lowered.

By the second feeding operation, 2 boards (12B) (12C) on the XY table (11) and a board (12A) on the supply conveyor (15)
Is moved to the right in FIG. This allows the XY table (1
1) The board on the right side (12C) moves to the discharge conveyor (27), the board (12B) moves to the right on the XY table (11), and the board (12A) on the supply conveyor (15) moves to the XY table. (11) Placed on the left side above. This means that the two substrates (12A) and (12B) are newly placed on the XY table (11).

Then, while the new two substrates (12A) and (12B) are being coated, the next substrate is set on and above the supply conveyor (15) as described above. This work will be repeated.

Although the lifter mechanism is provided on the supply conveyor side in this embodiment, it may be provided on the discharge conveyor side or both conveyor sides.

This device is not used alone, but is used as a line by connecting to other devices, so if the total length of each device is kept as short as possible, the line becomes very long. From this point as well, it is necessary to shorten the total length of the coating device.

(G) Effect of the invention In the case of an apparatus that can place two substrates on a workbench, the total length of the apparatus in the conventional example shown in FIG. 11 is about four times the substrate pitch (L ₁ in the figure). Therefore, in the embodiment shown in FIG. 1, the total length of the apparatus is about three times as large as the substrate pitch (L ₂ in the figure), and can be shortened by one substrate pitch as compared with the conventional example. Also, the length of the feed member
The l _{1 in} FIG. 11 is shortened to l ₂ in FIG. 1 by one pitch of the substrate, which allows the driving source of the feeding member to have a small output and the durability to be improved. Of course, in the case of being equipped on both sides, the total length is shortened by two pitches of the board in the same way.

[Brief description of drawings]

1 and 2 are a plan view and a front view of an embodiment of the present invention,
FIGS. 3 and 4 are plan views and front views when the substrate is fed once, and FIGS. 5 and 6 are plan views and front views when the substrate is fed twice, FIGS. 7 and 8, respectively. The figure shows a front view and a cross-sectional view when the lifter (9) lifts the substrate, FIGS. 9 and 10 show a front view and a cross-sectional view when the lifter (9) descends, and FIGS. 11 and 12 show 2A and 2B respectively show a plan view and a front view of a conventional example. (11) …… XY table, (12A) (12B) (12C) (12D)…
… Substrate, (15) …… Supply conveyor, (16) …… Feeding member, (1
7) …… Feed claw, (19) …… Lifter, (19A) …… Supporting part, (20) …… Linear reciprocating device.

Claims (1)

[Claims] 1. A substrate transfer device for transferring a substrate to a device for performing a certain work, and a work table on which a plurality of substrates are placed at a predetermined interval, and at least an upstream side or a downstream side of the work table. And a compare that conveys a single substrate that is conveyed from the upstream side device to a certain position, and is movable up and down and holds the substrate above the conveyor when moving up and the conveyor when moving down A lifter mechanism for transferring the substrates upward, and a feed claw for abutting on one substrate on the conveyor and a plurality of substrates on the workbench, after the work on the substrates on the workbench is completed. The respective substrates are simultaneously sent to the downstream side by one pitch in units of substrates, and then returned by one pitch. The substrates transferred to the conveyor by the downward movement of the lifter mechanism and the plurality of substrates on the work table fed by the one pitch. Repeat and feed 1 pitch Substrate transfer apparatus is characterized by providing a feed member.