JPH06100150A - Printed circuit board reversing device - Google Patents

Abstract

(57) [Summary] [Object] A reversing device for a printed circuit board, which is formed so that the printed circuit board transferred by the first transfer mechanism is transferred to the second transfer mechanism so that the front and back of the printed circuit board are reversed. , The objective is to achieve stable operation by reducing the cost by simplifying the configuration and reducing failures. A first transfer mechanism for stacking a printed circuit board and transferring the printed circuit board in a predetermined horizontal direction, and a taper portion disposed below a transfer end portion of the first transfer mechanism. A second transfer mechanism that loads the printed circuit board and transfers the printed circuit board in a predetermined horizontal direction; a seesaw that reverses the front and back of the printed circuit board when the printed circuit board reaches the transfer end; A tray disposed below the taper portion for receiving the printed circuit board which is reversed, and the printed circuit board received by the tray along the taper portion so as to be transshipped to the second transfer mechanism. And a pusher for projecting the saucer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reversal of a printed circuit board formed so that the printed circuit board transferred by a first transfer mechanism is transferred to a second transfer mechanism so that the front and back of the printed circuit board are reversed. Regarding the device.

In recent years, when electronic parts are mounted on a printed circuit board, two-sided mounting has been performed in which electronic parts are mounted on both front and back surfaces of the printed circuit board. In the manufacturing process of such a printed circuit board, for example, by mounting the electronic component on the front surface side of the printed circuit board by facing the surface of the printed circuit board upward, then the front and back of the printed circuit board is reversed,
When the back surface of the printed circuit board faces upward, the front and back surfaces of the printed circuit board are reversed so that electronic components are mounted on the back surface side of the printed circuit board.

Therefore, in the printed circuit board manufacturing process, a printed circuit board reversing device for reversing the front and back of the printed circuit board is used.

[0004]

2. Description of the Related Art Conventionally, the structure is as shown in the conventional explanatory view of FIG. 4A is a configuration diagram and FIGS. 4B1 and 2B2 are inverted explanatory diagrams.

As shown in FIG. 4 (a), the pulley 21B and
A belt 21A stretched by 21C and a first and transfer mechanism 21 driven by a motor 21D, and pulleys 22B and 22B.
The belt 22A stretched by C is formed so that the reversing mechanism 23 is disposed between the second mechanism driven by the motor 22D and the transfer mechanism 22.

The reversing mechanism 23 includes pulleys 24B, 24C, 24D.
And a belt 24A driven by a motor 24 and pulleys 25B, 25C, 25D.
The printed circuit board 3 is sandwiched by the belt 25A driven by the motor 25 and the sandwiched printed circuit board
3 is formed so as to be rotated 180 ° by the reversing motor 26.

The belts 21A, 22A, 24A, 25A in this case are
It is necessary to provide two sets, each of which holds or clamps both side edges of the printed circuit board 3. So the first
And the printed circuit board 3 loaded on the transfer mechanism 21 is turned over by the reversing mechanism 23.
To the motor 24, 25 of the reversing mechanism 23.
4 is taken in until the sensor 27 detects the tip of the printed circuit board 3, and as shown in (b1) of FIG. 4, the reversing motor 26 is driven to rotate in the direction of the arrow F.
As shown in 2), the printed circuit board 3 is turned upside down, and the motors 24 and 25 drive the printed circuit board 3 from the reversing mechanism 23 to the second transfer mechanism 22 as indicated by arrow B.

After the printed circuit board 3 is sent to the second transfer mechanism 22, the reversing mechanism 23 is rotated in the direction opposite to the arrow F so that the next printed circuit board 3 can be taken in, or further, 180 ° rotation is performed.

Therefore, the printed circuit boards 3 transferred by the first transfer mechanism 21 are reversed one by one by the reversing mechanism 23 and sent to the second transfer mechanism 22.

[0010]

Such a reversing mechanism 23
Wirings 28A, 28B, 28C, 28D for supplying power and outputting signals are laid on the motors 24, 25, the reversing motor 26, and the sensor 27, respectively, as shown in FIG. 4 (a). Is
The wirings 28A, 28B, 28C, 28D are designed so as to be moved following the rotation of the reversing mechanism 23.

However, there is a problem in that the reversing operation of the reversing mechanism 23 causes a failure such as disconnection of the wirings 28A, 28B, 28C and 28D, and the reversing operation of the printed circuit board 3 is interrupted.

Further, since the reversing mechanism 23 is composed of the belts 24A and 25A driven by the motors 24 and 25 and the reversing motor 26 for reversing the printed circuit board 3, complicated components are required, It had the problem of becoming expensive.

Therefore, it is an object of the present invention to achieve cost reduction by simplifying the structure and stable operation by reducing failures.

[0014]

FIG. 1 is a diagram for explaining the principle of the present invention. As shown in FIG. 1, a printed circuit board 3 is loaded and the printed circuit board 3 is transferred in a predetermined horizontal direction A. No. 1 transfer mechanism 1 and a transfer end portion of the first transfer mechanism 1
The second transfer mechanism 2 is arranged below the 1A so that the tapered portion 2A is positioned, the printed circuit board 3 is loaded, and the printed circuit board 3 is transferred in a predetermined horizontal direction B, and the transfer end portion 1A. The printed circuit board 3 reaches the printed circuit board
The seesaw 4 for reversing the front and back of 3, the pan 5 arranged below the taper portion 2A for receiving the printed board 3 whose front and back are reversed, and the printed board 3 received by the pan 5 are A pusher for projecting the tray 5 along the taper portion 2A so that the transfer mechanism 2 can be transshipped.
6 and so on.

The above-mentioned problems can be solved by such a configuration.

[0016]

That is, the seesaw 4 is provided at the transfer end portion 1A of the first transfer mechanism 1 for loading and transferring the printed circuit board 3 in the horizontal predetermined direction A, and the second transfer portion is provided below the transfer end portion 1A. The printed circuit board 3 having the taper portion 2A of the mechanism 2 and having its front and back reversed by the seesaw 4 is transferred to the second transfer mechanism 2 and transferred in the predetermined horizontal direction B by the second transfer mechanism 2. It is formed to be performed.

Below the taper portion 2A, there are provided a tray 5 for receiving the printed circuit board 3 whose front and back are reversed, and a pusher 6 for projecting the tray 5 along the taper portion 2A. The transfer mechanism 2 is configured so as to be reliably transshipped.

Therefore, the conventional large-scale reversing mechanism 23
By using the first transfer mechanism 1 and the second transfer mechanism 2 to transfer the printed circuit board 3 without using, the front and back of the printed circuit board 3 can be inverted, and inexpensive and stable operation can be obtained.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to FIGS. 2 is a block diagram of an embodiment of the present invention, FIG.
(a)-(d) is operation | movement explanatory drawing of this invention. Throughout the drawings, the same reference numerals denote the same objects.

As shown in FIG. 2, a first transfer mechanism 1 provided with a belt 1D stretched around pulleys 1B and 1C and driven by a motor 1E in the direction of arrow A, and pulleys 2B and 2C. A second transfer mechanism 2 provided with a belt 2E stretched so as to form a tapered portion 2A by 2D and driven by a motor 2F in the direction of arrow B, and the transfer of the first transfer mechanism 1 is performed. Below the terminal portion 1A, the second transfer mechanism 2
The taper portion 2A is arranged.

Further, an arm 4A rotatably held by a rotary shaft 4B and a weight 4C fixed to one end of the arm 4A are provided at a position of the transfer end portion 1A of the first transfer mechanism 1. The seesaw 4 is provided, and the printed circuit board 3 loaded on the first transfer mechanism 1 and transferred in the horizontal arrow A direction is the arm 4
The printed circuit board 3 is placed on the arm 4, and the arm 4 is formed so as to rotate as shown by an arrow F1 when the printed circuit board 3 is placed on the arm 4. The tray 2 is provided below the taper portion 2A of the second transfer mechanism 2. Five
And pusher 6 that projects saucer 5 along taper 2A
And are provided.

The first transfer mechanism 1 and the second transfer mechanism 2 are provided in two sets, and the printed circuit board 3 to be transferred is provided.
While it is necessary to hold both side ends of the seesaw, the seesaw 4 and the tray 5 may be provided as a set so as to be located substantially in the center of the printed circuit board 3 to be transferred.

Therefore, as shown in FIG. 3 (a), the arrow A
The printed circuit board 3 transferred by the first transfer mechanism 1 in the direction of is sent to the seesaw 4, and in this case, the printed circuit board 3 is taken into the arm 4A by the moment force of the weight 4C with the pivot shaft 4B as a support point. As the moment force due to the weight increases, the arm 4A naturally rotates as shown by arrow F1, and as shown in FIG. 3 (b), the printed circuit board 3 moves as shown by arrow F2 to the second transfer mechanism 2. It will be inverted toward the tapered portion 2A.

By reversing the printed circuit board 3 in this manner, it is possible to reverse the front and back sides of the printed circuit board 3 whose front side faces the upper side, for example. Further, as shown in FIG. 3 (c), the printed circuit board 3 whose front and back are reversed as indicated by arrow F3 is received by the saucer 5, and the printed circuit board 3 received by the saucer 5 is received.
As shown in FIG. 3 (d), the printed circuit board 3 is mounted on the taper portion 2A so that the printed circuit board 3 is transferred by the second transfer mechanism 2 by the protrusion of the arrow F5 of the pusher 6 and the horizontal arrow B is transferred. Carry out loading.

When the printed circuit board 3 is securely loaded on the taper portion 2A, the pusher 6 is retracted and the tray 5 is returned to its original position. Further, in this case, the arm 4A returns to the original horizontal state as shown by the arrow F4 by the moment force of the weight 4C, and is ready for the next loading of the printed circuit board 3.

Therefore, the printed circuit board 3 transferred by being placed by the first transfer mechanism 1 can easily be turned upside down by transferring the printed circuit board 3 to the second transfer mechanism. .

[0027]

As described above, according to the present invention,
A seesaw for reversing the front and back of the printed circuit board is provided at the transfer end portion of the first transfer mechanism, and the printed circuit board is reloaded from the first transfer mechanism to the second transfer mechanism. It is possible to invert the front and back of the printed circuit board with a simplified configuration without using it.

Therefore, as compared with the conventional reversing mechanism,
It is inexpensive and can perform stable reversal work with few failures, and has a great practical effect.

[Brief description of drawings]

FIG. 1 is an explanatory view of the principle of the present invention.

FIG. 2 is a configuration diagram of an embodiment of the present invention.

FIG. 3 is an explanatory diagram of a reversing operation of the present invention.

FIG. 4 is a conventional explanatory diagram.

[Explanation of symbols]

1 first transfer mechanism 2 second transfer mechanism 3 printed circuit board 4 seesaw 5 saucer 6 pusher 1A transfer end 2A taper

Claims (1)

[Claims] 1. A first transfer mechanism (1) for loading a printed circuit board (3) and transferring the printed circuit board (3) in a predetermined horizontal direction (A), and the first transfer mechanism (1). ) Is arranged so that the taper part (2A) is located below the transfer end part (1A), the printed circuit board (3) is loaded, and the printed circuit board (3) is transferred in a predetermined horizontal direction (B). The second transfer mechanism (2) for performing the above, the seesaw (4) for inverting the front and back of the printed circuit board (3) when the printed circuit board (3) reaches the transfer end (1A), and the front and back are reversed. The second transfer mechanism for receiving the printed circuit board (3), which is arranged below the tapered portion (2A), and the printed circuit board (3) received by the tray (5). A device for reversing a printed circuit board, comprising: a pusher (6) for projecting the tray (5) along the taper portion (2A) so as to be transshipped to (2).