JPH06296099A - Board support device - Google Patents

Abstract

PURPOSE:To enable a support jig to be automatically and easily replaced high in workability by a method wherein the support jig is transferred to a prescribed position, a transfer jig is made to descend and then ascend to support a board when a board is transferred. CONSTITUTION:A board support jig 11 is composed of a support 12 and slide members 14 and 15, and a sliding means 42 which slides the slide members 14 and 15 and a lift means 52 which moves the support jig 11 up or down are provided. The ends of the slide members 14 and 15 are supported by a conveyer 22, and when the support jig 11 is transferred to a prescribed position, the sliding means 42 is actuated to slide the slide members 14 and 15 inwards to separate them from the conveyer 22. When a board is transferred just over the support 12, the lift means 52 is actuated to lift up the support 12, and a board is kept in a horizontal position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a substrate receiving device for preventing the substrate from bending downward and ensuring the flatness of the substrate.

[0002]

2. Description of the Related Art When mounting a chip on the upper surface of a board by an electronic component mounting machine or applying cream solder to a land of a circuit pattern on the board by a screen printing machine,
In order to prevent the substrate from bending downward and ensure the planarity of the substrate, the substrate is supported from below by a jig for receiving.

The sub-supporting jig must be replaced when the type of substrate changes. Therefore, the present applicant previously proposed a device capable of automatically exchanging the underlay jig (Japanese Patent Laid-Open No. 3-28).
No. 9198). As shown in FIG. 4, in particular, the movable guide 20 for positioning the substrate 50 (reference numeral is used in the same publication, the same applies hereinafter) is horizontally moved in the horizontal direction, and the jig 10 for receiving the support is moved horizontally. The lower jig 10 is replaced and the position thereof is set by horizontally moving the jig 10 in the direction.

[0004]

However, in the above-mentioned conventional structure, a means for horizontally moving the movable guide 20 and the lowering jig 10 is required, the structure of the apparatus is complicated, and the lateral structure is complicated. There is a problem that work efficiency does not increase because it takes time to move horizontally in the direction.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a substrate receiving device that allows automatic exchange of a substrate receiving jig easily and with good workability.

[0006]

To this end, the present invention is directed to a lower support and a slide which is slidably mounted on the lower support in a direction intersecting the direction of conveyance by the conveyor and whose side end is supported by the conveyor. Configure a jig for receiving the board from the members,
Further, there are provided a slide means for sliding the slide member when the slide member is disengaged from the conveyor, and an elevating means for ascending / descending the lowering jig with the slide member disengaged from the conveyor.

[0007]

In the above structure, when the side end portion of the slide member is supported by the conveyor and the lowering jig is conveyed to a predetermined position, the slide means operates and the slide member slides inward, so that the conveyor Leave from. When the board on which the chip is mounted and the cream solder is applied is conveyed to directly above the lower receiving body, the elevating means operates to raise the lower receiving body, and the lower surface of the substrate is supported from below. The flatness is ensured, and chips are mounted and cream solder is applied.

[0008]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is an overall perspective view of an electronic component mounter for mounting a chip on a substrate. Reference numeral 1 denotes a base, and a cover box 2 is erected on the upper part of the rear part of the base. Inside the cover box 2, the following means are arranged. Reference numeral 3 is an X table, and 4 is a Y table, which are arranged orthogonal to each other and are driven by motors 5 and 6, respectively. A transfer head 7 is provided below the tip of the Y table 4.
Is installed. The transfer head 7 is provided with a nozzle 8 for vacuum suctioning the chip.

A table 9 is arranged at the rear of the upper surface of the base 1, and a parts feeder 10 such as a tape feeder or a tube feeder is arranged in parallel on the table 9. When the X table 3 and the Y table 4 are driven, the transfer head 7 horizontally moves in the X direction and the Y direction, the chips provided in the parts feeder 10 are vacuum-sucked and picked up by the nozzles 8, and a predetermined amount of the substrate 60 is picked up. Mount at the coordinate position.

A substrate 60, which will be described below, is provided on the upper surface of the base 1.
Is provided. Reference numeral 11 denotes a lower jig for the substrate 60, the structure of which will be described with reference to FIG. Reference numeral 12 is a lower receiving plate as a lower receiving body which is a main body of the lower receiving jig 11. Long plates 13 are integrally attached to both sides of the lower receiving plate 12, and an L-shaped first slide member 14 and a second slide member 15 are mounted on the long plate 13. An elongated hole 16 is formed in each of the first slide member 14 and the second slide member 15.
The shaft 17 penetrating through the arrow N with respect to the long plate 13
It is mounted so that it can slide in one direction. In FIG. 3, ribs 45 project from the lower surface of the long plate 13, and pin-shaped stoppers 47 and 48 are fixed to the ribs 45. Reference numerals 49 and 50 denote coil springs, and the spring force causes the vertical portions 14a and 15a of the slide members 14 and 15 to abut on the tips of the stoppers 47 and 48.
The side ends of the slide member 14 and the second slide member 15 are supported on the conveyor 22 and are conveyed by the conveyor 22.

In FIG. 1, reference numerals 21a and 21b are long plate-shaped brackets, and inside thereof, a conveyor 22 for carrying the substrate 60 and the lowering jig 11 in the N2 direction is held. Reference numeral 23 is a pulley on which the conveyor 22 is banded. In addition, a conveyor 24 for carrying in the substrate 60 and the jig 11 for undercoating to the conveyor 22, and a conveyor 2
The carry-out conveyor 25 that carries out from 2 is arranged so as to be continuous with the conveyor 22.

As shown in FIG. 3, the first slide member 1
4 and the side edges of the second slide member 15 are conveyor 22,
The lower jig 11 is transported while being supported by 24 and 25. In FIG. 1, the bracket 21a on the front side is attached to a base plate 31 via a metal fitting 32. The sliders 3 fitted on the guide rails 33 are provided on the lower surfaces of both sides of the base plate 31.
4 is mounted, and a nut 35 is mounted on the lower surface of the central portion of the base plate 31. A ball screw 37 that is driven by a motor 36 to rotate is screwed into the nut 35. Further, in FIG. 1, the rear bracket 21b is fixed on the base 1 by an L-shaped metal fitting 38.

Therefore, when the motor 36 is driven and the ball screw 37 rotates, the bracket 21a is moved to the conveyor 22.
The bracket 21a and the bracket 21b are adjusted by sliding in a direction orthogonal to the transport direction N2. This interval adjustment is performed when the width of the substrate 60 changes due to a change in the type of the substrate 60.

Next, referring to FIGS. 3 and 4, the slide means of the slide members 14 and 15 and the jig 1 for the undercarriage.
The raising / lowering unit 1 will be described. In FIG. 3, reference numeral 41 is a support frame, and an air cylinder 42 is attached to the front surface thereof. Two levers 43 and 44 project upward from the upper surface of the air cylinder 42. Levers 43 and 44
Is the vertical portions 14a, 15 of the slide members 14, 15
It is located outside a.

In FIG. 3, when the air cylinder 42 operates and the levers 43 and 44 move inward from the solid line position to the chain line position, the first slide member 14 and the second slide member 15 are moved to the levers 43 and 44. It is pushed and slides inward, its side end is detached from the conveyor 22, and the lower jig 11 can be lowered.

In FIGS. 3 and 4, the bracket 21
A support frame 51 is arranged at the lower center of b.
A cylinder 52 is erected on a side portion of the support frame 51. A support block 54 is connected to the rod 53 of the cylinder 52, and a pin 55 is provided upright on the upper surface of the support block 54. The pin 55 is disengageably fitted into a hole 56 formed in the lower surface of the lower backing plate 12. In FIG. 4, reference numeral 57 is a guide rod that guides the other side portion of the support block 54 so that it can be raised and lowered.

As shown by the solid line in FIG. 3, when the lower receiving jig 11 is conveyed above the support block 54, the rod 53 of the cylinder 52 projects upward and the pin 5
5 is fitted in the pin hole 56. And then the air cylinder 4
When the first slide member 14 and the second slide member 15 slide to the position indicated by the chain line when 2 operates, the cylinder 52
The rod 53 is retracted, and the support block 54 is lowered.
Then, the lower jig 11 supported by the support block 54 is also lowered.

In FIG. 3, 58 is a bracket 21a,
It is a plate fixed to the upper part of 21b. Further, in FIG. 1, reference numeral 61 is a stopper of the lower receiving jig 11 and 62 is a stopper of the substrate 60, each of which is composed of an air cylinder. Receiving jig 11 and substrate 6
0 is stopped at a predetermined position.

3 and 4, the support frame 5
A motor 62 is installed in the central portion of 1. Motor 6
The second rotating shaft 63 is a ball screw and is screwed into a nut 64. The nut 64 is attached to a slider 65, and the slider 65 slides along a vertical guide rail 66. Also, on the lower surface of the support block 54,
The plate 67 is integrally fixed. The rotary shaft 63 of the motor 62 penetrates the plate 67.

When the substrate 60 is transferred to the support block 54 in place of the sub-supporting jig 11, the rod 53 of the cylinder 52 projects and the upper surface of the substrate 60 rises until it contacts the lower surface of the plate 58. At this time, the plate 67 also rises integrally with the support block 54, hits the lower surface of the nut 64, and stops. That is, the nut 64 is a stopper that regulates the rising limit of the support block 54. Board 60
If the thickness of the substrate 60 changes due to the change of the product type, the motor 62 is driven to move the nut 64 up and down.
The substrate 60 on the support block 54 is firmly brought into contact with the lower surface of the plate 58 by finely adjusting the height of the plate.

The substrate receiving device is constructed as described above, and its operation will be described with reference to FIG.

In FIG. 1, the lower receiving jig 11 conveyed by the conveyors 24 and 22 is stopped at a predetermined position when the long plate 13 hits the stopper 61. Figure 5
(A) has shown the state at this time. At this time,
As shown in (a), the rod 53 of the cylinder 52 is retracted and the air cylinder 42 is in the lowered position.

Next, as shown in FIG. 5 (b), the cylinder 5
The rod 53 of No. 2 protrudes, the air cylinder 42 rises, and the levers 43 and 44 move to the first slide member 14 and the second slide member 14.
Is located outside the vertical portions 14a, 15a of the slide member 15. FIG. 3 shows the state at this time. At this time, the plate 67 approaches the nut 64, but the nut 6
It does not hit 4.

Next, as shown in FIG. 5C, the air cylinder 42 is actuated, and the first slide member 14 and the second slide member 15 are pushed inward by the levers 43 and 44 to slide inward. The side end portion thereof is separated from the conveyor 22, and the lower jig 11 can be lowered. In FIG. 3, the chain line shows the state at this time. Next, as shown in FIG. 5D, the rod 53 of the cylinder 52 is retracted, the lower jig 11 is lowered, and the substrate 60 is waited for being conveyed.

Next, the substrate 60 is conveyed by the conveyors 24, 22 and hits the stopper 61 (see FIG. 1) to stop immediately above the lower jig 11 (FIG. 5 (e)). Then, the rod 53 of the cylinder 52 projects and the lower receiving jig 11 rises, the lower receiving plate 12 hits the lower surface of the substrate 60 and pushes up the substrate 60 slightly, and the upper surface of the substrate 60 is attached to the brackets 21a, 2a.
It is pressed against the lower surface of the plate 58 on 1b (FIG. 5).
(F)). Prior to this, the height of the nut 64 is adjusted by driving the motor 62, and the plate 67 hits the lower surface of the nut 64, so that the rising height of the support block 54 is such that the upper surface of the substrate 60 is the plate 58. The height is adjusted so that it hits the underside of the.

When the substrate 60 is received by the lower receiving plate 12 and the flatness is secured in this manner, the preparation is completed. Therefore, in FIG. 1, the X table 3 and the Y table 4 are driven to move the transfer head 7 in the X direction and the Y direction, and the chips of the parts feeder 10 are sequentially mounted at predetermined coordinate positions on the substrate 60. Then, when the mounting of the chip on the substrate 60 is completed, the rod 53 of the cylinder 52 is retracted, the lower jig 11 is lowered, and the state shown in FIG. 5E is restored. Along with this, the conveyors 22 and 25 rotate, the substrate 60 is transported to the next step, and the series of operations is completed.

The present invention is not limited to the above-described embodiment, and for example, a lower receiving pin may be provided upright on the lower receiving plate 12 and the substrate 60 may be received from below by the lower receiving pin. . Further, although an electronic component mounting machine has been described as an example in the above-mentioned embodiment, the substrate receiving device of the present invention can be applied to a screen printing machine.

[0029]

As described above, according to the present invention, the lowering jig is automatically conveyed to a predetermined position such as a chip mounting position, and the conveying jig is automatically lowered at this predetermined position. Then, the substrate is made to stand by until it is transported, and when the substrate is transported, it can be automatically raised to receive the substrate, so that the whole operation can be performed smoothly with good workability.

[Brief description of drawings]

FIG. 1 is a perspective view of an electronic component mounting machine according to an embodiment of the present invention.

FIG. 2 is a perspective view of a lowering jig according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view of a substrate receiving device according to an embodiment of the present invention.

FIG. 4 is a cross-sectional view of a substrate receiving device according to an embodiment of the present invention.

FIG. 5 (a) is an operation diagram of a substrate undercoating device according to an embodiment of the present invention. (B) is an operation diagram of a substrate undercoating device according to an embodiment of the present invention. (C) is an embodiment of the present invention. (D) Operation diagram of the substrate undercoating apparatus according to the embodiment of the present invention (e) Operation diagram of the substrate undercoating apparatus according to the embodiment of the present invention (d) f) Operation diagram of the substrate receiving device according to the embodiment of the present invention

[Explanation of symbols]

 Reference Signs List 11 Undergoing jig 12 Undergoing plate 14 First slide member 15 Second slide member 22 Conveyor 42 Air cylinder 52 Cylinder

Claims (1)

[Claims] 1. A substrate under-treatment jig for a substrate having a under-receiver and a slide member slidably mounted on the under-receiver in a direction intersecting a conveying direction of the conveyor and having side ends supported by the conveyor. A tool, a slide means for sliding the slide member to disengage the slide member from the conveyor, and an elevating means for ascending / descending the lowering jig with the slide member disengaged from the conveyor. A substrate receiving device characterized by the above.