JPH0246079Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) This invention relates to a printed circuit board warp correction device aimed at a correction device for boards that are easily warped, such as printed circuit boards.

(Prior Art) Conventionally, in order to prevent a printed circuit board from warping upward, a weight was placed on the board to be straightened. In addition, a technique using a board pusher was also known (1983-
No. 77263).

(Problems to be solved by new ideas) In order to place a weight on a printed circuit board, not only must the placement location be considered, but the weight must also be changed in accordance with the warp situation, otherwise the weight cannot be placed accurately. There were many problems, such as not being able to maintain a flat surface, and the weight having to be returned to its original position after cutting the lead terminals of the board.

In addition, even when using a board pusher,
There was a problem that it was not easy to attach and detach.

(Means for solving the problem) However, in this invention, a push rod that presses down the printed circuit board set on the rail is attached to one end of the adjustment plate so that it can be raised and lowered, and the push rod can be latched when going up and down, respectively. Thus, the above-mentioned conventional problems were solved.

That is, this invention moves a printed circuit board set on a rail along the rail using a board pushing plate,
In a device that cuts lead wires with a cutter installed below the rail, an adjustment plate is attached to the board push plate so that it can be moved horizontally using fixing bolts and long holes, and a push rod that presses down on the printed circuit board is attached to one end of the adjustment plate for lifting. It is attached to the automatic lifting structure by a spring and a latching device, and the latching device is composed of a latching groove of a push rod and a latching piece that faces the latching groove so as to be able to move toward and away from the latching groove. One end is fixed to a support rod rotatably mounted on the adjustment plate, and one end of the support rod has a protruding piece that releases the locking of the locking piece in cooperation with a stopper fixed to the fuselage. This is a printed circuit board warp correction device.

The locking device for the push rod includes an annular groove provided in the neck of the push rod, and a locking piece provided with an arcuate recessed portion for abutting and latching on one side of the annular groove, which can be freely rotated onto the adjustment plate. The locking piece is always pulled toward the locking side by a spring. For example, the latching device can be attached by rotatably attaching the support rod to the adjustment plate, fixing the latching piece to the support rod, and tensioning a spring between the adjustment plate and the support rod. Can be configured.

According to the structure of the latching device, the latching state can be automatically released when the cutting process of the lead terminals of the board is completed, and the push rod can be raised to facilitate return. The purpose of the above-mentioned locking of the push rod and the locking claw is to stop the push rod at a predetermined lower pressure position.

(Function) In this invention, the push rod is attached to the adjustment plate attached to the substrate push plate, so the downward pressure stroke by the push rod becomes constant. Therefore, as long as the height of the rail and the thickness of the board are constant, regardless of the magnitude of the warpage, the board can be straightened into a flat plate by applying downward pressure with the same push rod. In addition, a spring is fitted to the push rod and a rising force is applied to the push rod, so by releasing the latching between the push rod and the latch piece, the push rod will automatically move due to the extension force of the spring. It has the effect of increasing the

(Example) Figures 1 and 2 show examples of this invention, which are semi-automatic (cutting is automatic and moving the printed circuit board is manual), but can be made fully automatic by adding power. . Rails 1 installed at predetermined intervals
A moving shaft 4 is installed above a, 1b at right angles to the direction of the rails 1a, 1b, the moving shaft 4 is guided by a guide shaft 22, and the guide shaft 22 is installed parallel to the rails 1a, 1b. has been done.

A push plate 6 of a printed circuit board 5 is fitted and fixed to the moving shaft 4, and mounting bolts 7, 7 are screwed into the upper end of the push plate 6, and the mounting bolts 7, 7 are connected to the length of the adjustment plate 2. It is loosely fitted into the hole 2a. A push rod 3 is fitted into the other side of the adjustment plate 2 so as to be able to rise and fall freely, and the push rod 3 penetrates a cylinder 8 protruding from the lower edge of the adjustment plate 2 and projects downward. A spring 9 is fitted between the inner bottom of the cylinder 8 and the step 3a of the push rod 3. One end of a support rod 10 is rotatably fixed to the upper part of one side of the adjustment plate 2,
One end of a hanging piece 11 is fixed to the support rod 10.
At the other end of the hooking piece 11, there is a concave portion 11 having a planar arc shape.
a is provided so that the recessed portion 11a is engaged with the annular groove 3b of the push rod 3 by rotation of the support rod 10. One end of a spring 12 is fixed to one end of the support rod 10, the other end of the spring 12 is fixed onto the adjustment plate 2, and a protruding piece 10a is formed on the other end of the support rod 10, and a protruding piece 10a is formed on the other end of the support rod 10, and the other end of the spring 12 is fixed onto the adjustment plate 2. The push rod 3 and the locking piece 11 can be unlatched by contacting the stopper 13 and rotating the support rod 10. The moving shaft 4 has a handle 14.
The proximal end of is fixed. In the figure, reference numeral 15 indicates a stopper for limiting the rise of the push rod 3, and reference numeral 16 indicates a cutter.

In the above embodiment, when the printed circuit board 5 is placed on the rails 1a and 1b and the push rod 3 is pressed down by hand, the push rod 3 compresses the spring 9 and descends.
Since the lower end presses down on the printed circuit board 5, the printed circuit board 5 is straightened into a flat shape. Therefore, if the handle 14 is moved in the direction of arrow 17 in FIG. 1, the moving shaft 4 will also be moved in the same direction.
The printed circuit board 5 is moved in the same direction by the push plate 6, and the lead terminals 18 protruding from the lower surface of the printed circuit board 5 are cut into appropriate lengths by the cutter 16. In this case, since the printed circuit board 5 is straightened into a flat shape, the protruding length of the lead terminals becomes constant, and the quality of the processed product can be maintained constant.

After the cutter 16 finishes cutting the lead terminal in this way, the protruding piece 10 of the support rod 10
a comes into contact with the stopper 13, and as the support rod 10 advances, the support rod 10 rotates in the direction of arrow 19 in FIG. Groove 3b and recessed part 1 of locking piece 11
The lock with 1a is released. When the latch is released as described above, the push rod 3 is raised by the spring 9, and the lower end of the push rod 3 is separated from the top of the printed circuit board 5, so that the push plate 6 moves in the direction of arrow 20 in FIG. When retracting to the previous position, lead terminal 1
There is no risk that 8 will touch the cutter 16 or anything else and cause trouble. Furthermore, when the adjustment plate 2 returns to the old position, the support rod 10 is rotated in the direction of arrow 21 in FIG. 3 is lowered so that the annular groove 3b of the push rod 3 and the recessed part 11a of the locking piece 11 can be locked. Therefore, the above operation can be repeated.

(Effect of the invention) That is, according to this invention, one side of the adjustment plate is attached to the push plate of the printed circuit board, and the push rod is attached to the adjustment plate so that it can be raised and lowered, so that the downward pressure of the push rod attached to the adjustment plate is applied. Therefore, there is an effect that the printed circuit board can be straightened into a flat shape.

However, since no other operation is required with only the downward pressure of the push rod, and the amount of downward pressure is always constant, even if the amount of warpage of the printed circuit board is unstable, it is possible to correct it consistently, and this also allows the cutter to Lead terminals of the same length protrude from the processed printed circuit board, which has the effect of making the quality uniform. In addition, since the push rod automatically returns to the upper position after cutting the lead terminal, the next operation can be performed immediately after the push plate retreats.

Furthermore, it has various advantages such as being easy to operate and causing no operational obstacles.

[Brief explanation of drawings]

Fig. 1 is a partially omitted plan view of an embodiment of this invention, Fig. 2 is a partially omitted front view, and Fig. 3 is an explanation explaining how to engage and detach the push rod and the latch piece. It is a diagram. 1a, 1b...Rail, 2...Adjustment plate, 3...
Push rod, 4... Moving shaft, 5... Printed circuit board, 6... Push plate, 8... Cylindrical body, 9... Spring, 10... Support rod, 11... Hanging piece.

Claims (1)

[Scope of utility model registration request] In this device, a printed circuit board set on a rail is moved along the rail using a board holding plate, and the lead wires are cut using a cutter installed below the rail.The adjusting plate is moved horizontally to the board holding plate using fixing bolts and long holes. A push rod that presses down the printed circuit board is attached to one end of the adjustment plate to the automatic lifting structure using a rising spring and a latching device, and the latching device is connected to the latching groove of the push rod and the latching groove. It consists of two hooking pieces that face each other in a separable manner, and one end of the hooking piece is fixed to a support rod that is rotatably attached to the adjustment plate, and one end of the support rod is attached to the fuselage. A printed circuit board warping correction device comprising a protruding piece that cooperates with a fixed stopper to release the latch of the latch piece.