JPH0344757Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a board carrier used when mounting electronic components on a printed circuit board by an automatic electronic component insertion/mounting machine.

[Summary of the idea]

This invention provides a board carrier that is provided with a width determining bar that is movable parallel to one side of the quadrilateral outer frame and can be fixed to the outer frame, and a printed circuit board is mounted on this board carrier to automate electronic components. By using an insertion/mounting machine, it is possible to eliminate setup loss when changing board size.

[Conventional technology]

In recent years, most of the mounting of various electronic components such as ICs, LSIs, capacitors, and resistors onto printed circuit boards has been automatically carried out using electronic component automatic insertion/mounting machines.

When performing high-mix, low-volume production using an FMS (flexible manufacturing system), as shown in Figure 14, a large number of printed circuit boards 1 are easily inserted into a magazine 2 and set. After the printed circuit boards 1 are taken out one by one from the magazine 2 by an electronic component automatic insertion/mounting machine for mounting electronic components, and transferred onto a work table by a conveyor to insert/mount electronic components,
It is carried out on a conveyor and stored in another magazine again.
The manganese is then transferred to an automatic electronic component insertion and mounting machine that mounts other electronic components as necessary.

[Problem that the invention attempts to solve]

However, when mounting electronic components onto printed circuit boards using multiple automatic electronic component insertion and mounting machines in this way, if the size (especially width) of the printed circuit board changes, the setup of the automatic insertion and mounting machines becomes difficult. It is necessary to change the width of the magazine (change the width of the conveyor, change the mounting position of the cylinder, change the stopper position, change the work table width, etc.), or change the magazine width, or prepare a magazine that matches the width of the printed circuit board. The problem was that it took a long time to prepare.

The purpose of this invention is to solve these problems and eliminate setup losses, and for this purpose, it is an attempt to provide a board carrier that can be used commonly for various printed boards of different widths.

[Means for solving problems]

Therefore, this invention consists of a quadrilateral outer frame, a width determining bar that is movable within this outer frame in parallel to the sides thereof, and has a fixing means to the outer frame, and the outer frame and the width determining bar. The present invention provides a board carrier comprising a board fixing device for fixing a printed circuit board placed thereon, and positioning pins for determining the mounting position of the printed circuit board with respect to the outer frame.

[Effect]

By adjusting the position of the width determining bar according to the width of the printed circuit board, various printed circuit boards of different widths can be mounted on the same circuit board carrier whose outer frame has a uniform outer size.

Therefore, if you attach a printed circuit board to this circuit board carrier, store it in a magazine, and run it through an automatic electronic component insertion/mounting machine, the width of the outer frame of the circuit board carrier will change even if the width of the printed circuit board changes. Since there is no magazine, you cannot change the magazine or automatically insert/insert the magazine.
There is no need to change the setup on the mounting machine side, and there is no time lost due to this.

〔Example〕

Hereinafter, embodiments of this invention will be described based on the drawings.

First Embodiment FIGS. 1 through 6 show a first embodiment of this invention. First, the overall structure of this embodiment will be explained with reference to FIG.

10 is the outer frame of the quadrilateral, and its pair of long sides 1
Each of 0a and 10b has a flange portion 10c that is somewhat wide and extends horizontally outward over the entire length, and is used for positioning and engagement with a conveyor or work table of an automatic electronic component insertion/mounting machine. A plurality of small holes 10p are provided to be used, and a pair of short sides 10d and 10e each have a rising piece 10f that rises vertically over the entire length.

A width determining bar 11 is provided within this outer frame 10 and is movable in the direction of the arrow parallel to the long sides 10a and 10b. Both ends of this width determining bar are provided with fixing means 12 to the outer frame 10, the details of which will be described later.

Further, the substrate mounting portion 11a of this width determining bar 11
A plurality of notches 11b are provided at intervals, and board fixtures 13 are attached to two of the notches 11b. Further, this width determining bar 11 has a rising piece 1 that stands vertically over almost the entire length and whose upper end is bent horizontally.
It has 1c.

On the other hand, notches 10g are also formed in the substrate mounting portion of the long side 10b of the outer frame 10 opposite to this at locations opposite to the notches 11b, and substrate fixtures 14 are attached to two of the locations.

Further, positioning pin mounting portions 10h each having a through hole 10i are provided at intervals, and positioning pins 15 are inserted into two of these portions.

The structure of each of these parts will be explained in more detail with reference to FIGS. 2 to 6.

Fixing means 12 provided at the end of the width determining bar 11
The structure on the right end side of FIG. 1 is shown in an enlarged sectional view in FIG. 2.

That is, the slide piece 11d bent and extended at the end of the width determining bar 11 slides on the short side 10e of the outer frame 10, but the slide piece 11d is placed close to this and spaced apart from the end of the width determining bar 11. Two through holes 11e and 11f are formed.

A clamp piece 16 made of a rigid plate is disposed below the end of this width determining bar 11.
A fulcrum part 16a bent in an inverted L shape at the rear end
is inserted into the through hole 11f, and the stud bolt 17 is screwed and fixed into the middle part of the clamp piece 16 through the through hole 11e, and the coil spring 1 is inserted between the head of the stud bolt 17 and the upper surface of the width determining bar 11.
8 is interposed.

Therefore, the clamp piece 16 is normally in close contact with the lower surface of the width determining bar 11 as shown in the figure due to the biasing force of the spring 18, and in this state, the lock formed by bending the tip upward The portion 16b is fitted into one of a plurality of engagement holes 10j formed at intervals on the short side 10e of the outer frame 10, thereby fixing the right end of the width determining bar 11 to the outer frame 10.

Fixing means 1 on the left end side of the width determining bar 11 in FIG.
2 is also configured symmetrically with this, and the clamp piece 16 is located on the right short side 10f mentioned above among the many engagement holes 10j formed at intervals on the left short side 10d of the outer frame 10. The left end of the width determining bar 11 is fitted into the engagement hole corresponding to the engagement hole of the outer frame 10.
Fixed to.

When it is desired to move the width determining bar, when the stud bolt 17 is pushed against the spring 18, the clamp piece 16 is pushed down while rotating about the fulcrum part 16a, and the locking part 16b is pressed down against the outer frame 10.
Since it comes off from the engagement hole 10j, it can freely slide in the direction of the arrow in FIG.

The board fixture 13 attached to the width determining bar 11 is
As shown in FIGS. 3 and 4, this is a plate spring that is bent in an inverted U shape and has a board holding part 13a at its tip that presses the edge of the printed circuit board 1, and its base is connected to a width determining bar 11. It is attached to the rising piece 11c with a screw 19 at a position corresponding to the notch 11b.

As shown in FIG. 5, the board fixing tool 14 on the outer frame 10 side is also a flat spring bent in an inverted U shape and having a board holding part 14a at its tip that presses the edge of the printed circuit board 1. , attach the horizontally bent base to the flange portion 1 at a position corresponding to the notch 10g of the outer frame 10.
It is attached to 0c with screws 20.

As shown in FIG. 6, the positioning pin 15 is press-fitted from below into the through hole 10i of the positioning pin attachment part 10h provided in the outer frame 10, and the conical part is inserted into the through hole 10i of the positioning pin attachment part 10h provided on the outer frame 10. The mounting position of the printed circuit board 1 with respect to the outer frame 10 is determined by inserting it into the positioning hole 1a.

According to this first embodiment configured in this way,
After moving the width determining bar 11 according to the width of the printed circuit board to be mounted on the circuit board carrier and fixing it to the outer frame by the fixing means 12, slightly tighten the leaf springs of the printed circuit board fixing means 13 and 14 from above. By pushing in while bending and inserting the positioning pins 15 into the positioning holes 1a, the printed circuit board 1 is placed and fixed at the required position on the outer frame 10 and the width determining bar 11, as shown by the imaginary lines in FIG. can do.

Therefore, the size of the printed circuit board (especially the width)
Even if the board carrier changes, it can be used in common by simply moving the width determining bar 11. If the external dimensions of this board carrier are kept constant, a common board carrier can be inserted into the board and stored, and electronic components can be automatically There is no need to change the setup on the insertion/mounting machine side.

Note that the mounting positions and number of the board fixtures 13 and 14 and the positioning pins 15 can be changed depending on the length of the printed circuit board, the position of the positioning holes, and the like.

Second Embodiment Next, a second embodiment of this invention will be explained with reference to FIGS. 7 to 11. In these figures, the first embodiment shown in FIGS. 1 to 6 will be explained. Similar parts are given the same reference numerals, and their description will be omitted.

The fixing means 22 for fixing the width determining bar 11 to the outer frame 10 in this second embodiment is constructed as shown in FIG.

That is, the slide piece 11d' extending at the end of the width determining bar 11 is made to have spring properties, and the clamp piece 26 with the rear end bent portion 26a inserted into the through hole 11f is attached to the end of the width determining bar 11. Attach this clamp piece 26 and slide piece 11 with screws 27.
d', the short side 10e or 10d of the outer frame 10
I try to put it in between.

Therefore, by loosening the screw 27, the width determining bar 11 can be freely moved in the direction of the arrow in FIG. 7, and by tightening the screw 27 at an arbitrary position, the clamp piece 26 and the slide piece 11d The width determining bar 11 can be fixed to the outer frame 10 by the frictional force thereof.

Therefore, in this embodiment, the short sides 10d and 10e of the outer frame 10 are provided with engagement holes (10 in FIG.
There is no need to provide j).

Note that the rising piece 11c' of the width determining bar 11 in this embodiment does not have a horizontal portion at its upper end.

Next, the board fixing tool 13 on the width determining bar 11 side is the same as in the first embodiment, but the board fixing tool 24 on the outer frame 10 side is constructed as shown in FIGS. 9 and 10.

That is, the flange portion 10 on the long side 10b side of the outer frame
A clamp piece 28 having a knob 29 integrated therein is attached to the upper surface of c by a screw 35 via washers 31, 32, 33 and a spring 34.

Then, the printed circuit board 1 placed on the long side 10b of the outer frame 10 is pressed and fixed by the clamp piece 28 biased by the spring 34.

When removing the printed circuit board 1, use the knob 29.
When the clamp piece 28 is tilted in the direction of arrow P in FIG.
The printed circuit board 1 can be taken out.

Therefore, the long piece 10 of the outer frame 10 of this embodiment
There is no need to form a notch (10g in FIG. 1) in b.

As shown in FIGS. 11 and 12, the positioning pin 25 is attached to a pin holder 36 that is separate from the outer frame 10.
The pin holder 36 is fixed to the bottom surface of the flange portion 10c on the long side 10b of the outer frame with a screw 37.
It is installed by.

In addition, as shown in FIG. 7, the flange portion 10c is provided with a plurality of extra pairs of screw holes 10k for attaching pin holders. The mounting position of the pin holder 36 can be changed by changing the position of the pin holder 36.

The rest of the structure and the method of using this substrate carrier are the same as in the first embodiment described above.

Third Embodiment FIG. 13 is a perspective view of a printed circuit board attached to a board carrier according to a third embodiment of this invention.

In this embodiment, the outer frame 40 has its inner circumferential portion somewhat depressed to form a substrate placement portion 40a, and one of the short pieces 40c has its entire upper surface at the same height as the substrate placement portion 40a.

A width determining bar 41 is provided between short sides 40c and 40d of this outer frame 40 so as to be slidable in the direction of arrow A. This width determining bar 41 is formed by folding a strip-shaped plate material having spring properties into two in the longitudinal direction so as to be able to sandwich the edge of the substrate 1.
It itself also serves as a board fixture.

The end on the side where the printed circuit board 1 is inserted is slightly curved upward to facilitate insertion. Also, a through hole 41a is formed at both ends, and this through hole 41a is connected to a plurality of engagement holes 40e formed at intervals corresponding to the short sides 40c and 40d of the outer frame 40.
The width determining bar 41 is fixed to the outer frame 40 by inserting the fixing pin 42 so as to match one of the two.

Therefore, the fixing pin 42, the through hole 41a, and the engagement hole 40e constitute a fixing means.

On the other hand, on the long piece 40b of the outer frame 40, a clamp piece 43 made of a plate material having spring properties is provided as a board fixing tool.
is attached over its entire length, and has a pin holding portion 43b provided with a through hole 43a into which a positioning pin 44 is inserted, protruding inward.

According to this embodiment, the width determining bar 41 is moved according to the width of the printed circuit board 1, and the fixing pin 42 is moved to match the width of the printed circuit board 1.
After inserting and fixing it to the outer frame 40, insert the printed circuit board 1 from the direction of arrow B between the long piece 40b of the outer frame and the clamp piece 43 and between the upper and lower pieces of the width determining bar 41, and insert the printed circuit board 1 into the positioning hole. 1a into the through hole 4 of the clamp piece 43
By inserting the positioning pins 44 in alignment with the positioning pins 3a, the printed circuit board 1 can be mounted in a predetermined position.

The usage method and effects of this substrate carrier are as follows.
This is similar to each of the embodiments described above.

It should be noted that the structure of each part of the substrate carrier according to this invention is not limited to the structure of each of the above-mentioned embodiments, and it goes without saying that various changes can be made.

[Effect of idea]

As explained above, the circuit board carrier of this invention can mount various printed circuit boards with different widths by adjusting the position of the width determining bar according to the width of the printed circuit board. By using a board carrier, a common magazine can be used even if the width of the printed circuit board to which electronic components are automatically inserted differs, and there is no need to change the setup on the electronic component automatic insertion/mounting machine side.

Therefore, the lost time when changing models, especially in the case of high-mix, low-volume production, is reduced, and productivity is greatly improved.

[Brief explanation of drawings]

Fig. 1 is a plan view showing the whole board carrier of the first embodiment of this invention, Fig. 2 is an enlarged sectional view of the main part showing the fixing means of the width determining bar, and Fig. 3 is the side of the width determining bar. 4 is a sectional view taken along line AA in FIG. 3, FIG. 5 is a sectional view of the board fixing device on the outer frame side, and FIG. 6 is a sectional view of the locating pin. FIG. 3 is a side view showing the attached state. FIG. 7 is a plan view showing the entire board carrier of the second embodiment of the invention, FIG.
10 and 10 are a plan view and a side view showing the board fixing means on the outer frame side, and FIGS. 11 and 12.
The figures are a back view and a side view of the positioning pin attachment portion. FIG. 13 is a perspective view showing an example of a board carrier according to a third embodiment of this invention and a printed circuit board mounted thereon. FIG. 14 is a perspective view showing an example of a magazine used to carry printed circuit boards into or out of the electronic component automatic insertion/mounting machine and the printed circuit boards stored therein. 1...Printed circuit board, 2...Magazine, 10,
40... Outer frame, 11, 41... Width determining bar, 1
2, 22... Fixing means, 13... Board fixing tool on the width determining bar side, 14, 24... Board fixing tool on the outer frame side, 15, 25... Positioning pin.

Claims (1)

[Scope of Claim for Utility Model Registration] (a) A quadrilateral outer frame; (b) A width determining bar that is movable within this outer frame parallel to its sides and that has means for fixing to this outer frame. , (c) a board fixing tool that fixes the printed circuit board placed on the outer frame and the width determining bar, and (d) a positioning pin that determines the mounting position of the printed circuit board with respect to the outer frame. board carrier.