JPS597193B2 - Automatic terminal insertion device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a terminal automatic method for automatically inserting a large number of flat terminals, such as tab terminals, into a circuit board, such as a printed circuit board, one terminal from a row of terminals. This invention relates to improvements in insertion devices.

In general, this type of device includes a terminal row feeding mechanism that sequentially feeds out each terminal in the terminal row to an insertion position, a fixed gripping plate that is disposed at the insertion position of this terminal and grips the terminal in the insertion position, and a movable A terminal gripping mechanism includes a pressurizing means for pressing the movable gripping plate against the fixed gripping plate so as to sandwich the gripping plate and the terminal, and a cutter for separating the terminal from the terminal row, and supports the fixed gripping plate and the movable gripping plate. A gripper that raises and lowers a fixed gripping plate and a movable gripping plate, including a ram, between a raised position in which the one terminal is sandwiched, and a lowered position in which the terminal thus clamped is inserted into a circuit board such as a printed circuit board. Equipped with a plate lifting mechanism (・
Ru.

In the prior art device, the grip plate lifting mechanism includes a rotating shaft connected to the ram through a crank means to raise and lower the ram, and a rotational drive source for rotating this rotating shaft. Since the terminal row feeding mechanism and the pressurizing means for the movable gripping plate can be driven from a common rotary drive source via the cam means, this is advantageous compared to the case where the ram is driven by a separate linear drive source such as a cylinder. However, near the top dead center and bottom dead center of the ram, there is a slight vertical movement due to the crank means.The holding plate grips the terminal near the top dead center of the ram, so this slight vertical movement occurs. It is difficult to grip the terminal with the gripping plate, and since the gripping plate inserts the terminal into the circuit board near the bottom dead center of the ram, if there is a slight vertical movement, the gripping plate will press against the circuit board and damage the circuit board. An object of the present invention is to maintain the gripping plate at a predetermined height position regardless of the continuous rotation of the crank means when the gripping plate is in the raised or lowered position, thereby ensuring the gripping and insertion of the terminal. An object of the present invention is to provide an automatic terminal insertion device 10 according to the present invention.An embodiment of the present invention will be described in detail with reference to the drawings. Figs. 1 to 5 show an automatic terminal insertion device 10 of the present invention. device 10
The terminal row feeding mechanism 14 (FIG. 3) sequentially feeds each terminal 12A of the terminal row 12 to the insertion position A, and the fixed gripper which is arranged at the terminal insertion position A and grips the terminal 12A in the insertion position. A pressurizing means 20 that presses the movable grip plate 18 against the fixed grip plate 16 so as to sandwich the plate 16, the movable grip plate 18, and the terminal 12A, and a cutter 22 that separates the terminal 12A from the terminal row 12.
and a terminal gripping mechanism 24.

As shown in FIG. 4, the cutter 22 is made up of the edge of the terminal row passage hole 26a of the guide member 26, which will be inserted later, and the edge of the movable grip plate 18.
4 consists of a feed pawl 28 and a driving means for intermittently swinging the feed pawl. The fixed gripping plate 16 is fixed to a later-described ram, and the movable gripping plate 18 is driven by a spring 32 (see FIG. 5A). Normally, they are arranged facing the fixed gripping plate 16 so as to be separated from each other (
・Ru. The guide pin 34 passes through the hole 16a of the fixed grip plate 16 and is screwed into the movable grip plate 18.The grip plate elevating mechanism 36, as shown in detail in FIGS. 16 and a movable gripping plate 18, a ram 38, and a rotating shaft 4 connected to this ram via a crank means 40.
2 and a rotation drive source (not shown) that rotates this rotation shaft.

The ram 38 is vertically slidably guided by the previously described guide member 26, as shown in FIG. As particularly shown in detail in FIG. 7, the crank means is connected to a crank disk 44 rotatably supported in a rear fixed frame 66A by a bearing 68 and rotated by a rotating shaft 42, and an axis X of the rotating shaft 42. The crank arm 48 is attached to the crank disk 44 by a pin 46 in a detached position. The upper ram portion 52 is connected to the crank arm 48 by a pin 50 at a position offset from the axis X, so that it cannot be displaced in the width direction. Also, the crank arm 48 can swing around the pin 50 within the space 67 between the fixed frames 66A and 66B.
Ru. Therefore, when the crank disk 44 is rotated about the axis x by the rotating shaft 42, the pin 50 cannot be rotated about the axis by the upper ram portion 52 that engages the fixed frame 66B. (Because of this, the crank arm 48 is connected to the pin 50.
The ram 38 is reciprocated up and down by reciprocating with a stroke twice the radial distance between the axis X and the pin 46 so that the pin 50 moves up and down while swinging left and right around the axis. The ram 38, as shown in FIG. The portion 52 has a hollow portion 52a at its lower end, and the lower ram portion 54 has a small diameter extension 54 extending into the hollow portion.
It has a.

Therefore, the upper and lower ram portions 52, 54 are able to move relative to each other in the axial (vertical) direction.
- Reference numeral 52b is an inward flange that closes the lower end of the hollow portion, and 54b is an enlarged head of the small diameter extension. Spring means 5
6 is an enlarged head 54b and a flange 52b within the hollow portion 52a.
The lower ram portion 54 is urged upwardly toward the upper ram portion 52, leaving a gap G between the enlarged head portion 54b and the upper wall of the hollow portion 52a. Accordingly, the lower ram portion 54 is pushed against the upper ram portion 52 against the spring means 56.
It is possible to increase relatively further towards. The stopper means 58 consists of a protrusion 60 fixed to the lower ram portion 54 and a stopper pin 64 adjustably screwed into a mounting piece 62 fixed to the fixed wall. 54 reaches a predetermined height position,
That is, when the terminal gripping portions of the gripping plates 16 and 18 are aligned with the holes 26a, the protruding piece 60 abuts against the stopper pin 64 and the raised position is removed. Next, the operation of the above device will be described with reference to FIG.
4 (Fig. 5B).

Next, the pressurizing means 20 is driven and the pressurizing member 30 is advanced toward the movable gripping plate 18, so that the terminal 12A is cut off from the terminal row 12 by the cutter 22, and the two gripping plates 16, 18 Terminal 12A is sandwiched between them (FIG. 5C). Thereafter, gripping plate lifting mechanism 36 is driven to lower ram 38, and gripping plates 16 and 18 insert terminal 12A into the corresponding hole of circuit board 66. (FIG. 5C).After that, the pressurizing means 20 moves the pressurizing member 30 backward, so that the movable gripping plate 18 is moved by the spring 3.
2, the terminal 12A is separated from the fixed grip plate 16 and released while being inserted into the circuit board 66 (FIG. 5D). Next, the gripping plate elevating mechanism 14 raises the gripping plates 16 and 18 and returns them to the state shown in FIG. Gripping plates 16, 18
It is required that the height position does not change in the states of FIGS. 5A and B and the states of FIGS. 5C and D. In the present invention,
Near the top dead center of the crank means 40, the lower ram portion 54 is stopped by the stopper means 58, and the subsequent movement of the crank means 40 is simply to raise the upper ram portion 52 while compressing the spring means 56; When the gripping plates 16 and 18 hit the circuit board 66 near the bottom dead center of the crank means 40, the lower ram portion 54 is unable to descend any further. Therefore, as shown in FIG. As shown in the figure, it stops at the vertical dead center, making it easier to grasp the terminal, and preventing the gripping plates 16 and 18 from crushing the circuit board 66. The feeding mechanism 14 and the pressurizing means 20 are the gripping plate elevating mechanism 3
It is driven from a rotational drive source No. 6 via a cam or the like.

According to the present invention, as described above, the gripping plate can be stopped at the predetermined raised position and lowered position regardless of the continuous operation of the crank means, thereby facilitating gripping and cutting of the terminal, and The circuit board into which the terminal is to be inserted is not damaged by the gripping plate, and the terminal insertion work can be performed automatically and smoothly.

[Brief explanation of drawings]

1 and 2 are a perspective view and a side view of the main parts of the automatic terminal insertion device of the present invention, FIGS. 3 and 4 are a front view and a horizontal sectional view of the terminal insertion part, and FIGS. 5A to D 6 is a diagram illustrating the operation of the device of the present invention, FIG. 6 is a diagram showing the stroke of the vertical movement of the crank means and the lower ram portion, and FIG. 7 is an enlarged longitudinal sectional view of the crank means. 10...Terminal automatic insertion device, 12...
Terminal 1L12A...Terminal, 14...
Terminal row feeding mechanism, 16, 18... Fixed grip plate and movable grip plate, 20... Pressure means, 22...
...Cut 1, 24...Terminal gripping mechanism, 36
...Grip plate lifting mechanism, 38...Ram,
40... Crank means, 42... Rotating shaft, 52, 54... Upper and lower ram parts, 56...
... Spring means, 58 ... Stopper means,
66...Circuit board, G...Gap.

Claims (1)

[Claims] 1. A terminal row feeding mechanism that sequentially feeds out one terminal of each terminal row to an insertion position, a fixed gripping plate and a movable gripping plate arranged at the insertion position of the terminal and gripping the terminal in the insertion position, and a terminal gripping mechanism including a pressing means for pressing the movable gripping plate against the fixed gripping plate in a sandwiching manner and a cutter for cutting the one terminal from the terminal row; and supporting the fixed gripping plate and the movable gripping plate. a rotating shaft connected to the ram via a crank means, and a rotational drive source for rotating the rotating shaft; In an automatic terminal insertion device, the terminal automatic insertion device is equipped with a grip plate lifting mechanism that moves the grip plate up and down between a lowered position where the terminal is inserted into the circuit board and the grip plate is moved up and down.
The ram of the gripping plate lifting mechanism includes an upper ram part connected to the crank means and a lower ram part supporting the fixed gripping plate and the movable gripping plate, and the upper and lower ram parts are capable of relative axial movement. and the gripping plate elevating mechanism includes a spring means for biasing the lower ram portion toward the upper ram portion while leaving a margin for the lower ram portion to further rise toward the upper ram portion; An automatic terminal insertion device further comprising a stopper means for regulating the upward position of the lower ram portion.