JPS6138240Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bending device, for example, a device for bending pin terminals of IC (semiconductor integrated circuit) sockets.

The IC socket is fixed to the printed board and the IC
It is also electrically connected to the printed circuit board.
Fixing the IC socket to the printed board is the same as fixing a normal IC to the printed board.
This is done by inserting an IC socket into a printed board and dipping it in solder soda.

In this case, remove the printed board before dipping it in solder soda.
The IC socket may slip out, or the insulating mylar sheet inserted between the IC socket and the printed circuit board may become deformed due to heat while immersed in the solder, causing the IC socket to float against the printed board.

Therefore, conventionally, when an IC socket is inserted into a printed circuit board, it is temporarily fixed with tape, etc.
Alternatively, after insertion, the terminals of the IC socket were bent using tweezers to prevent the IC socket from coming out from the printed board. The former requires removing temporary fixing tools such as tape after soldering, and the latter requires the troublesome work of individually bending a large number of terminal pins.

The purpose of this invention is to solve the above-mentioned conventional drawbacks by bending all the pin terminals of IC elements, etc., into a printed board in a single operation as a pre-processing step before inserting them into the printed board. An object of the present invention is to provide a bending device that enables processing.

To this end, the present invention includes a support mechanism for mounting an element having a plurality of pin terminals such as an IC socket or an IC element, and a plurality of bending mechanisms for simultaneously bending each pin terminal of the supported element. and a drive source that synchronously drives the bending operation of the pin terminals by this bending mechanism, so that the bending process of the tips of multiple pin terminals (lead terminals) possessed by the element can be completed in one operation. This is what I did.

The folding device according to the present invention will be described in detail below with reference to the drawings.

The drawings show a bending device according to the present invention; FIG. 1 is a top view, FIG. 2 is a partially cutaway side view, and FIG. 3 is an enlarged view of the tip of the bending block in FIG. 2.

In the figure, 1 is a base, and a frame 2 is fixed to the base 1 with screws 3a to 3d, and at the same time, the screws 3a to 3d are used as positioning blocks 2a, which will be described later.
are jointly concluded. Although not shown, two parallel holes are provided on the top surface of the frame 2. Furthermore, a screw 4 is engaged with the frame 2, and this screw 4 can move forward and backward with respect to the frame 2, and its tip positions one side of the IC socket 5 with respect to the frame 2.

Positioning of the other side of the IC socket 5 is performed by the above-mentioned positioning block 2a. Three camshafts 6a to 6c (hereinafter referred to as 6a) arranged parallel to each other are rotatably supported on the frame 2, and pinions 7a to 7 are mounted at one end of the camshafts 6a to 6c.
c (hereinafter represented by 7a) is fixed.
Cams 8a to 8c (however, only 8a is shown in the drawings and hereinafter referred to as 8a) having cam surfaces to be described later are fixed to the camshaft 6a.
The cam 8a has an elliptical shape in which a circular arc portion and a linear portion are opposed to each other, and the width between the opposing linear portions is shorter than the width between the opposing circular arc portions.

9a, 9b are bending blocks; 9a, 9b
The pair constitutes a bending mechanism. The bending blocks 9a and 9b are connected at a swinging fulcrum 10, and both ends thereof are swingable in the opening and closing directions about this point, and the legs extend to sandwich the cam 8a of the camshaft 6a, and the tips are provided with a clamping force. It extends to just below the hole in the frame 2. As shown in FIG. 3, the clamping pressure section has a structure in which a protrusion 11a is provided on the bending block 9a side, and a groove 11b is provided on the other 9b side so as to face the protrusion 11a.

Reference numeral 12 denotes a curved spring stretched between the legs of the bending blocks 9a and 9b, one end of which is locked on the bending block 9a side.
The legs of a and 9b always act to pinch and tighten the cam 8a. Therefore, the bending blocks 9a,
When the leg portion of the bending block 9b is in pressure contact with the arcuate portion of the cam 8a, the clamping pressure portions of the bending blocks 9a and 9b are closed;
When the leg portion is in pressure contact with the straight portion of the cam 8a, the clamping pressure portion is open.

A rack 13 serves as a driving source for the camshaft 6a, and is supported on the base 1 so as to move linearly in the directions of arrows S to S'. This rack 13 has teeth that mesh with a pinion 7a provided on the camshaft 6a, so that the linear reciprocating movement of the rack 13 causes the camshaft 6a to rotate and reciprocate within a predetermined angle.

The stoppers 14a, 14b limit the range of movement of the rack 13, that is, the range of rotation of the camshaft 6a. The coiled spring 15 is a return spring for the rack 13, and this return spring 1
5, the rack 13 is moved linearly by swinging the handle 16 in the direction of the arrow. This is the swinging fulcrum 17 of the handle 16, and one end of the handle 16 simply fits into a recess formed in the rack 13, thereby converting the swinging motion of the handle 16 into a linear motion of the rack 13. ing.

Next, the operation will be briefly explained.

As shown by the two-dot chain line in FIG. 1, the IC socket 5 is set on the upper part of the frame 2 using the screw 4 and the positioning block 2a. The pin terminal 5a of the IC socket 5 is inserted into the frame 2 through a hole (not shown) and guided by the clamping portions of the bending blocks 9a and 9b. At this time, the rack 13 is in contact with the stopper 14a by the return spring 15, so the legs of the bending blocks 9a, 9b are in contact with the straight part of the cam 8a, and the swinging fulcrum 1
The clamping pressure part through 0 is expanding. Therefore IC
The pin terminal 5a of the socket 5 is bent by a bending block 9a,
It becomes possible to enter between the clamping pressure parts of 9b.

In this state, move the handle 16 in the direction of the arrow to the fulcrum 17.
When the rack 13 swings about , the rack 13 moves in the direction of arrow S' against the tension of the spring 15. The camshaft 6a is rotated via this moving pinion 7a. The limit of movement in the direction of arrow S' is regulated by a stopper 14b. Both camshafts 6a rotate approximately 90 degrees. Due to this rotation, the leg portions of the bending blocks 9a, 9b are pushed apart against the tension of the curved spring 12, and the clamping pressure portions at the tips act to close the legs. As a result, I.C.
The pin terminal 5a of the socket 5 is bent as shown by diagonal lines in FIG.

When the pressure on the handle 16 is released, the rack 13
is returned by the return spring 15, and the arrow S
move in the direction. Along with this, pinion 7a,
The cam 8a also rotates in the opposite direction, the legs of the bending blocks 9a and 9b are narrowed by the tension of the curved spring 12, and the clamping pressure parts are expanded, so that the IC socket 5 can be taken out from the hole in the frame 2. It becomes possible.

Figure 4 shows the IC socket 5 and printed board after processing.
A perspective view of the PT is shown. The tip of the terminal pin 5a is bent, and when inserted into the through hole TH of the printed board PT, this bent portion functions to lock the IC socket 5 to the printed board PT.

Note that it is not limited to IC sockets;
It can be applied to its own terminal pins or to terminal pins of other parts. Further, the rotational drive of the camshafts 6a to 6c is not limited to a rack and pinion, but a link mechanism may be used, and a motor,
The camshaft may be rotated by a drive source such as a magnet.

As described above, according to the present invention, as a pre-process for inserting an element such as an IC having multiple pin terminals into a printed circuit board, it is possible to bend the pin terminals in a single operation. This bending process makes it possible to prevent the elements inserted into the printed board from coming off.

In particular, when automatically inserting IC elements into printed circuit boards, such bending of pin terminals is required as a pre-process.

Therefore, the practical effects of a device that automatically bends all the pins of a large number of pin terminals of such an IC device at once are enormous.

Furthermore, compared to the work of bending pin terminals after inserting elements into a printed board, the bending process can be performed without being affected by the shape of the printed board or the arrangement of IC elements, making it a highly versatile bending device. can be provided.

[Brief explanation of the drawing]

Fig. 1 is a top view of the bending device according to the present invention, Fig. 2 is a partially cutaway side view thereof, Fig. 3 is an enlarged view of the tip of the bending block, and Fig. 4 shows the relationship between the IC socket and the printed board. FIG. In the figure, 1 is the base, 2 is the frame, 5 is the IC socket, 6a to 6c is the camshaft, and 7a to 7c
is a pinion, 8a is a cam, 9a and 9b are bending blocks, 10 is a swinging fulcrum, 12 and 15 are springs, 13 is a rack, 14a and 14b are stoppers,
16 indicates a handle.

Claims (1)

[Scope of utility model registration request] A drive mechanism of a bending device that forms a bent part in a part of a pin terminal of the element in a pre-process of inserting an element having a plurality of pin terminals into a printed board, the drive mechanism comprising:
It has a support part that supports an element having a plurality of pin terminals arranged in parallel, and is composed of a pair of opposing blocks connected at the center of swing, and one end of the block is provided with a clamping part that can be opened and closed, The other end is provided with a leg part that holds an oblong cam fixed to a camshaft with a closing spring in tension, and opens the leg part at a radius corresponding to the rotation of the cam, and the leg part opens the leg part at a radius corresponding to the rotation of the cam. A bending device characterized in that a bending block is provided corresponding to a pin terminal, and the clamping pressure portion opens and closes the bending block, and a drive source drives a plurality of the camshafts with synchronized rotation.