JPH0378342B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to the transportation of printed circuit boards used in electronic devices, and in particular to the transportation of circuit boards in the automatic mounting process of electronic components. Regarding space saving.

(B) Prior Art Generally, in automatic mounting equipment for electronic components, a board feeding device that transports a printed circuit board along a guide rail to a predetermined position performs a predetermined operation at the predetermined position, such as applying adhesive. After completing various operations such as coating or mounting electronic components on the printed circuit board, a configuration is often adopted in which the next printed circuit board is transported one by one.

As an example, the applicant of the present application filed a patent application filed in 1983.
No. 84840 discloses a printed circuit board conveyance device, in which a drive source rotates a board feeding arm, and a wire and biasing means move a slider to convey the board.

(c) Problems to be solved by the invention In the conventional example described above, the transfer distance is twice the length of the arm, that is, the radius of rotation, and the recent increase in the size of the board (single board) requires a longer transfer distance. In this case, the length of the arm becomes long, which hinders space saving of the substrate transfer device.

(d) Means for Solving the Problems The present invention has been made to solve the above problems, and will be described based on an embodiment. In a substrate feeding device that transports a substrate 1 in a fixed direction along the guide rails 2, 2 by pins 4, 4, which are moving means, the pins 4, 4 are provided, and a spring 9, which is a biasing means, biases in the transport direction. A slider 3 to which one end is fixed, a motor 12 as a drive source for transporting the substrate 1 along the guide rails 2, 2, and an arm 11 as a rotating member that can be rotated forward and backward by the motor 12. and the arm 11
A pulley 16 serving as a tensioning means disposed at It is composed of

(e) Effects The effects of the present invention will be explained below based on Examples. Due to the forward and reverse rotation of the motor 12, the length of the arm 11 (motor 12
The distance between pin 4 of slider 3 and pulley 16 can be up to four times
4, the printed circuit boards 1, 1 can be moved by the distance corresponding to the aforementioned stroke.

(F) Embodiments The present invention will be described with reference to the drawings. The drawings show a perspective view of a substrate transfer device of the present invention.

In the drawing, 1, 1 is a printed circuit board, 2, 2
3 is a guide rail, 3 is a slider having bins 4, 4 as moving means, 5 is a ball spline shaft, 6 is a rotating lever, 7 is a cylinder for driving the rotating lever, 8 is a connecting piece provided on the slider, 9, 10
11 is an arm for moving the wire, 12 is a motor as a driving source for rotating the arm, and 13 is a tensioning spring for tensioning the wire. 14 is a fixing plate for fixing the pulleys 13, 13 and the wire 10 with a pin 15; 16 is a pulley provided at the tip of the arm 11 for tensioning the wire 10; ,1
7 and 17 are pin holes provided in the printed circuit boards 4 and 4.

Next, to explain the operation, as shown in the drawing, the wire 10 is stretched from the connecting piece 8 of the slider 3 to the pulleys 13, 13 and the pulley 16 on the arm 11 without slack, and is attached to the fixed plate 14 by the pin 15. is fixed, and in this state, arm 1
1 rotates the motor 12 as it moves from position A in the drawing to position B (the rotation angle depending on the positions A and B is determined by the conveyance distance, but the maximum effective angle for moving the wire is 180°). As a result, the connecting piece 8 of the slider 3 is pulled toward the left in the drawing, that is, in the direction of the arrow C, by the biasing force of the spring 9, and the pins 4, 4 at the tip of the slider 3 are accordingly pulled.
Therefore, the printed circuit boards 1 and 1 are also moved in the direction of the arrow C.
will be transported towards.

At this time, the slider 3 is normally fed by one printed circuit board 1 due to the rotation of the motor 12. Thereafter, as the lever of the cylinder 7 is lowered, the rotary lever 6 rotates clockwise, the ball spline shaft 5 rotates clockwise, the slider 3 similarly rotates clockwise, and the pins 4, 4 rotate clockwise. The printed circuit boards 1, 1 are removed from the pin holes 17, 17 of the printed circuit boards 1, 1.
The sheets are fed simultaneously or sequentially one by one, placed on a conveyor belt (not shown) such as a belt conveyor, and then discharged or sent to the next process.

Thereafter, the arm 11 rotates against the biasing force of the spring 9 by rotating the motor 12 from the position B to the position A, and reaches the position ready for the next feeding.

Note that the same effect can be obtained even if the arm and the drive source are arranged at positions other than those shown in the drawings, without impairing the degree of freedom in design.

(G) Effects of the Invention According to the substrate feeding device of the present invention, by disposing the sliding member on the rotating member and stretching the connecting member, a long conveyance distance can be achieved by one rotation of the rotating member.
In other words, it is possible to obtain a stroke that is up to four times the distance between the drive source and the tensioning means, and because the stroke is twice as long as in the conventional method, it is necessary to increase the size of the rotating member in order to obtain a long conveyance distance. Compared to the previous example, the rotating member can be made smaller, which contributes to making the entire substrate feeding device smaller, that is, saving space.

[Brief explanation of drawings]

The drawing shows a perspective view of the substrate transport device of the present invention. 1...Printed circuit board, 2...Guide rail, 3
... Slider, 8 ... Connection piece, 9 ... Spring (biasing means), 10 ... Wire (connection member), 11 ... Arm (rotating member), 14 ... Fixed plate (fixed part), 1
5...Pin (moving means), 16...Pulley (stretching means).

Claims (1)

[Claims] 1. In a substrate feeding device in which a substrate guided between a pair of guide rails is transferred in a fixed direction along the guide rails by a moving means, one end of a biasing means provided with the moving means and biasing in the transfer direction. a slider to which is fixed, a drive source for transporting the substrate along the guide rail, a rotating member that can be rotated forward and backward by the drive source, one end of which is fixed to the slider and the other end of which is fixed. 1. A substrate feeding device comprising: a connecting member fixed to a portion of the substrate; and a stretching means disposed on the rotating member to stretch an intermediate portion of the connecting member.