JPS6138224Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a shutter support device, and more particularly to a shutter that is supported by a frame and opens and closes by movement of the frame.

BACKGROUND TECHNOLOGY AND PROBLEMS One method for mounting chip-shaped components on a circuit board to form an integrated circuit is to first feed the chip-shaped components from a component supply hopper into a component rolling guide of a placement board, and then The chip-shaped part is turned over by moving a shutter arranged at the lower part of the arrangement plate. Next, the shutter is opened, and the chip-shaped component is dropped and stored in a predetermined component storage recess on the template arranged at the lower part of the placement plate. Then, a circuit board printed with adhesive resin is placed on this template, thereby transferring the chip-shaped component to the circuit board side.

In such an integrated circuit production system, if the shutter is thick, the gap between the placement plate and the template becomes large, which reduces the accuracy of component placement. Therefore, it is possible to make the shutter thinner, but using a thinner shutter causes problems with the deflection and flatness of the shutter.

Purpose of the invention The present invention was developed in view of these problems.The purpose of this invention is to make the shutter thinner without losing its flatness or bending, and to simplify these functions. This structure allows for reliable performance. An object of the present invention is to provide a highly accurate shutter support device.

Summary of the invention In order to achieve the above object, the invention provides a tension holder having a protruding piece slightly higher than the upper surface of the frame on the outer side of a pair of parallel members of the frame, and Both ends of the shutter on the side corresponding to the protruding piece are clamped between clamp holders consisting of a pair of upper and lower elongated plates and fastened with clamp holders arranged at approximately equal intervals, and both ends are clamped by the clamp holders. Place the shutter on the protruding end of the protruding piece of the tension holder,
The clamp holder of the shutter is tightened to the tension adjustment bolt, whereby the shutter is bent at the protruding end of the protruding piece, and this bent portion of the shutter and one end surface of the clamp holder are The shutter is stretched over the frame by sliding along the outer surface of the protruding piece.

With the above structure, even if the plate-like body constituting the shutter is thin, sufficient flatness can be obtained and deflection of the shutter can be effectively prevented. Moreover, this flatness is achieved by bending the shutter at the protruding ends of the protruding pieces of the frame body, applying tension to the shutter, and then stretching the shutter between the protruding ends of the protruding pieces. , the above flatness can be achieved reliably and with high precision with a simple structure.

Example Hereinafter, an example in which the present invention is applied to a circuit component placement device in a hybrid integrated circuit production system will be described.
This will be explained with reference to FIGS. 1 and 2.

The shutter 25 is made of a thin stainless steel plate with a thickness of 0.1 mm to 0.15 mm, and is supported by a frame 26. This frame 26 is formed in a U-shape by a pair of parallel horizontal upper left and right members and a horizontal connecting member connecting these members, and a pair of rods 2
It is slidably supported by 7. Both ends of the rod 27 are fixed to rod supports (not shown), and the movement of the rod supports allows the shutter 25 to move in two directions orthogonal to each other.

On the other hand, both ends of the shutter 25 in the width direction are held by clamp holders 30, respectively. This clamp holder 30 includes a pair of upper and lower elongated plates 31,
32, a concave groove 33 with a semicircular cross section is formed on the lower surface of the upper plate 31, and a convex strip 34 with a semicircular cross section is formed on the upper surface of the lower plate 32. Then, a pair of upper and lower plates 3 are inserted between the grooves 33 and the protrusions 34 to sandwich the end of the shutter 25.
1 and 32 are fastened and connected to each other by clamp bolts 35 arranged at approximately equal intervals.

Further, tension holders 3 are provided on the outer surfaces of the pair of left and right members facing each other in the U-shaped frame 26.
7 is fixed. This tension holder 37
A protruding piece 38 integrally formed with the frame 26 extends in its length direction, and the protruding end of the protruding piece 38 protrudes slightly above the upper surface of the frame 26. Further, the projecting end of the projecting piece 38 has a substantially semicircular cross section.
This is done so as not to damage the stainless steel shutter 25 that comes into contact with the shutter 8.

In FIG. 1, reference numeral 3 is the placement plate, 5 is the template, and 7 is a lower plate having a component passage hole communicating with the component overturning guide of the placement plate 3. Familiar with the parts supply hopper. Further, reference numeral 47 is a holding plate for correctly holding the template 5 in a predetermined position.

Next, the shutter 25, whose both ends are held by the clamp holder 30, is placed on the protruding end of the protruding piece 38, and the clamp holder 30 is tightened to the tension holder 37 with the tension adjustment bolt 36.
The tension adjustment bolts 36 and the clamp bolts 35 are arranged alternately. When the tension adjustment bolt 36 is tightened, the shutter 25 is bent at the protruding end of the protruding piece 38, and this bent portion of the shutter 25 and the inner end surface of the lower long plate 32 of the clamp holder 30 is configured to slide along the outer surface of the protruding piece 38.

Therefore, in this way, the tension adjustment bolt 3
6, since the shutter 25 is in contact with the protruding piece 38 of the tension holder 37, the tension of the shutter 25 increases, and the shutter 25 is suspended on the frame 26 with strong tension. Therefore, even if the plate forming the shutter 25 is thin, sufficient flatness can be obtained, and deflection of the shutter 25 can be effectively prevented. Further, since a high degree of flatness is obtained, it is possible to get very close to the arrangement plate, and the clearance between the shutter 25 and the template 5 can be made small.

Further, the height position of the shutter 25 in the vertical direction is determined by the pair of left and right protruding end surfaces of the protruding piece 38,
It has a structure that makes it very easy to achieve precision. Therefore, this groove structure allows the clearance between the shutter 25 and the template 5 to be further reduced. That is, unlike the device that applies tension to the shutter by simply pulling the shutter horizontally with a tension bolt, this device applies tension to the shutter 25 by bending the shutter 25 at the protruding end of the protruding piece 38. , by stretching the shutter 25 between the protruding ends of the protruding pieces 38, flatness can be obtained. Therefore, although the structure is simple, highly accurate flatness can be reliably obtained.

Effects of the Invention As explained above, according to the present invention, the shutter can be stretched on the frame with strong tension by tightening the tension adjustment bolt. Therefore, even if the shutter is made of an extremely thin material, the tension applied to the shutter provides a high degree of flatness, and the shutter does not bend. For this reason, it is possible to construct the shutter with a very thin material and to make the gap between the shutter and the template very small, making it possible to mount the chip-shaped component on the circuit board with very high precision.

Further, the positioning of the shutter in the height direction is determined by the protruding end surfaces of the pair of left and right protruding pieces, and the protruding end surfaces have a structure that can be machined to achieve very high precision. Therefore, the height positional accuracy of the shutter can be made very high, so the gap between the shutter and the template can be further reduced, and the mounting accuracy can be further improved.

Moreover, the above function is achieved by placing the shutter on the protruding end of the protruding piece of the tension holder provided on the outer side of a pair of parallel members of the frame, and placing both ends of the placed shutter on the protruding piece of the protruding piece. This is achieved by an extremely simple structure in which the end is bent and tightened to the tension holder using a tension adjustment bolt.

Therefore, according to the present invention, a highly accurate shutter support device as described above can be obtained with an extremely simple structure, and when used in a production system for hybrid integrated circuits in which chip-shaped components are mounted on a circuit board, it is possible to obtain a highly reliable shutter support device. High productivity can be obtained.

[Brief explanation of drawings]

The drawings show an embodiment in which the present invention is applied to a device for arranging circuit components in a hybrid integrated circuit production system. Fig. 1 is a longitudinal sectional view of a shutter support device, and Fig. 2 shows a shutter support structure. FIG. In addition, in the symbols used in the drawings, 25... shutter, 26... frame (frame body), 30... clamp holder, 31, 32... elongated plate, 35...
Clamp bolt, 36... tension adjustment bolt, 37... tension holder, 38... projecting piece.

Claims (1)

[Scope of utility model registration request] In a shutter that is supported by a frame body 26 and is opened and closed by movement of the frame body 26, a protrusion that is slightly higher than the upper surface of the frame body 26 is provided on the outer side of the pair of parallel members of the frame body 26. A tension holder 37 having a piece 38 is provided, and both ends of the shutter 25 made of a thin plate on the side corresponding to the protruding piece 38 are connected to a pair of upper and lower elongated plates 31, 3.
The shutter 25, which is clamped by two clamp holders 30 and approximately spaced apart from each other, is clamped, and both ends of the shutter 25, which are clamped by the clamp holders 30, are connected to the protruding ends of the protruding pieces 38 of the tension holder 37. , and tighten the clamp holder 30 of the shutter 25 against the tension holder 37 with the tension adjustment bolt 36, whereby the shutter 25 is bent at the protruding end of the protruding piece 38, and this bent shutter 2
5 and one end surface of the clamp holder 30 slide along the outer surface of the protruding piece 38, thereby suspending the shutter 25 on the frame 26.