JPS6346203Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a square pin insertion machine for cutting a square pin wire into a predetermined length and driving it into a board.

Recently, there has been a particular demand for this type of square pin insertion machine to increase the square pin insertion speed. However, many conventional square pin insertion machines are unsatisfactory in terms of speed and tend to have complicated structures. In addition, if the square pin insertion operation becomes defective due to variations in the cross-sectional dimensions of the square pin wire, bending, or the presence of burrs, it will lack practicality and reliability. It is necessary to consider countermeasures.

In view of the above points, the present invention enables square pin insertion by making it possible to perform all operations from cutting the square pin wire to driving the cut square pin into the board with one stroke of the main cylinder that performs the main operation. The present invention aims to provide a square pin insertion machine which is capable of increasing the speed, simplifying the structure, and increasing the dimensional tolerance of the square pin wire to improve reliability.

Embodiments of the square pin insertion machine according to the present invention will be described below with reference to the drawings.

FIG. 1 shows the overall configuration of the embodiment. In this figure, a main cylinder 2 and a bent portion 4 of a square pin wire 3 are fixed to the upper part of a main body frame 1. This bending section 4 has a configuration in which a large number of pulleys 5 are arranged in two rows, and is used to correct the bending of the square pin wire 3 from the supply reel around which the square pin wire 3 is wound.

A main slider 10 is connected to the tip of the piston rod of the main cylinder 2, a push rod 11 is fixed to the lower end of the main slider 10, and a slide rod 12 is inserted so as to be slidable in the vertical direction. Here, the main slider 10 is supported by rails 13 so as to be able to freely slide vertically with respect to the main body frame 1, and the upper end of the slide rod 12 is connected to a receiving rod 15 around which a compression spring 14 is arranged with a gap in between. They are now facing each other. The gap defines a delay in the downward movement of the slide rod 12 relative to the push rod 11. Further, the extension spring 16 is connected to the main slider 1.
The extension spring 17 is provided in the direction of pulling up the slide rod 12, and the extension spring 17 is provided in the direction of pulling up the slide rod 12. moreover,
At the lower end of the slide rod, there is a guide 1 for holding and guiding the square pin cut from the square pin wire 3.
8 is fixed, and stopper pins 19 and 20 are provided on the side surface of the slide rod to regulate the amount of movement.

On the other hand, on a chuck slider 30 that is vertically slidable with respect to the main body frame 1, there is a chuck 31 for holding the square pin wire 3 passed through the bent portion 4, and a chuck cylinder 34 for driving the chuck. is located. The chuck slider 30 is supported by a rail 13 so as to be slidable in the vertical direction. Further, a position adjustment stopper bolt 38 that defines the upper limit position of the chuck slider 30 is fixed to the main body frame 1, and a feed adjustment bolt 39 that abuts the chuck slider 30 is fixed to the main slider 10.

The cutter mechanism is connected to the main body frame 1 as shown in Figure 2.
It is composed of a fixed cutter 40 fixed to the main body frame 1, and a movable cutter 41 supported slidably in the horizontal direction by a cutter guide 56 with respect to the main body frame 1,
A unidirectional clutch 42 is arranged to press the square pin wire 3 against the guide surface of the fixed cutter 40. This unidirectional clutch 42 is rotatable only in the direction in which the square pin wire 3 descends, and is attached to one end of a lever 43 that is pivotally supported on the main body frame side, and is fixed by an extension spring 44 at the other end of the lever 43. It is biased in the direction of pressure contact with the guide surface of 40. The movable cutter 41 has a square pin receiving groove 45 in the vertical direction, as shown in FIGS. It is pivotally connected via 47. The movable cutter 41 has a recess 48
A compression spring 51 is formed therein, which biases the square pin presser 46 in the direction of pressing the square pin 50.
will be provided. Further, a cutter cylinder 52 is fixed to the main body frame 1 in order to move the movable cutter 41 forward in the lateral direction. Here, the lower end of the guide surface of the fixed cutter 40 becomes the fixed blade 53, and the upper end of the square pin receiving groove 45 of the movable cutter 41 becomes the movable blade 53.
4, when the movable cutter 41 is moved forward by the cutter cylinder 52, the square pin wire 3 whose tip was inserted into the square pin receiving groove 45 is cut, and a square pin 5 of a predetermined length is inserted into the square pin receiving groove 45.
0 remains. In addition, the extension spring 55
is for returning the movable cutter 41, and the adjustment bolt 57 defines the amount of advance of the movable cutter 41 so that the movable cutter 41 is directly below the push rod 11 in the forward position.

The guide 18 has a structure in which a cover body 61 is attached to a guide main body block 60 with a pin 62, as shown in FIG.
is brought into pressure contact with the main body block 60 side. That is, the pin 62 passes through the main body block 60 and the lid 61, a compression spring 63 is fitted around the pin 62, and a retaining ring 66 is fixed to the rear end of the pin 62. A square pin guide groove 64 is formed in the vertical direction on the lid-contacting surface of the main body block 60. This square pin guide groove 64 is connected to the movable cutter 4.
The cover 61 receives the square pin 50 that has been held by the push rod 11 as the push rod 11 descends, and the lid body 61 presses the square pin 50 against the square pin guide groove 64 side. The elastic support structure of the lid 61 can improve the tolerance to dimensional errors, bends, and burrs of the square pin wire 3.

Further, the push rod 11 has a tapered surface 65 in the middle of the lower end as shown in FIGS. push rod 11
This allows for reversing during the descending stroke.

Below the guide 18, a printed board 70 into which the square pin 50 is to be inserted is supported by an XY table or the like, and further below the board 70 a board support part 80 is arranged. This substrate support part 80 also has a groove into which the square pin 50 is inserted, and rises in synchronization with the descent of the guide 18 to the upper surface of the substrate to support the lower surface of the substrate.

Next, the operation of the above embodiment will be explained. When the previous square pin insertion operation was completed, the square pin wire 3 entered the square pin receiving groove 45 of the movable cutter 41 and stopped. In this state, first, the cutter cylinder 52 is actuated to move the movable cutter 41 from the retreated position shown in FIGS.
The main cylinder 2 operates as the main cylinder moves forward in the direction. Therefore, the tip of the square pin wire 3 becomes a square pin 50 cut to a predetermined length, and the movable cutter 4
1 and moves to a position above the guide 18.
At this time, the square pin 50 is pressed against the square pin receiving groove 45 by the L-shaped square pin retainer 46, so that it does not fall off. The push rod 1 is moved forward by the movable cutter 41.
1. The square pin receiving groove 45 and the square pin guide groove 64 are arranged on one straight line, and as shown in FIG. The movable cutter 4 is inserted into the guide groove 64 of the guide 18 during this operation.
1, the square pin retainer 46 is the push rod 1 as shown in Figure 5.
The tapered surface 65 of 1 is opened in the direction of arrow P, and finally the square pin retainer 46 is pressed against the push rod 11 as shown in FIG.
By detaching from the cutter cylinder 52, the cutter cylinder 52 can return, and the movable cutter 41 is moved by the extension spring 5.
Retreat with the power of 5. The guide 18 presses and holds the square pin 50 in the square pin guide groove 64 by the pressing force of the lid body 61, and when the main slider 10 descends by a predetermined amount or more, the upper end of the slide rod 12 moves to the receiving rod 1.
5, and as a result, the push rod 11 and the slide rod 1
Both go down. Therefore, the guide 18 is lowered to a position very close to the printed circuit board 70 as indicated by the arrow R, and the slide rod 12 is stopped from lowering by the stopper pin 19. At this point, the substrate support part 80 has been raised as indicated by the arrow S, and then the push rod 11 is lowered to drive the square pin 50 in the guide 18 into the substrate 70 as shown in FIG. Almost simultaneously with the start of driving the push rod 11, the chuck cylinder 34 operates, the chuck 31 clamps the square pin wire 3, and the feed adjustment bolt 39 of the main slider 10 hits the chuck slider 30, causing the chuck slider 30 to move in place. Decreases quantitatively. As a result, the next square pin wire 3 is supplied into the movable cutter 41. Thereafter, the chuck 31 is released, the main slider 10 returns to its original position, and the chuck slider 30 also returns to its raised position. Note that the insertion of the square pin 50 is confirmed by detecting the presence or absence of electrical continuity between the guide 18 and the board support part 80.

As explained above, in the present invention, the guide that holds the square pin above the board is composed of the guide main body block and the lid body that presses against the guide body block, so there is a certain degree of dimensional variation in the square pin wire actually used. A good square pin insertion operation can be performed even if there are bends, burrs, etc. In addition, all operations from cutting the square pin wire to driving the cut square pin into the board can be performed with one stroke of the main cylinder, which performs the main operation, increasing the square pin insertion speed and improving the structure. It is possible to obtain a square pin insertion machine that is simplified and has improved reliability.

[Brief explanation of the drawing]

FIG. 1 is a front view showing the overall configuration of an embodiment of the square pin insertion machine according to the present invention, FIG. 2 is a front view showing the cutter mechanism and guide portion, FIG. 3 is a plan view of the same, and FIGS. FIG. 6 is a perspective view showing the movable cutter and the tip of the push rod, and FIG. 7 is a perspective view of the square pin driven into the printed circuit board. 2...Main cylinder, 3...Square pin wire, 4
...Bending section, 10...Main slider, 11...
Push rod, 12...Slide rod, 30...Slider for chuck, 31...Chuck, 34...Cylinder for chuck, 40...Fixed cutter, 41...
Movable cutter, 42... Unidirectional clutch, 45
...Square pin receiving groove, 46 ...Square pin holder, 52
... Cylinder for cutter, 50 ... Square pin, 60
... Guide body block, 61 ... Lid body, 62 ...
... Pin, 64 ... Square pin guide groove, 65 ... Tapered surface, 70 ... Printed circuit board, 80 ... Board support part.

Claims (1)

[Claims for Utility Model Registration] A main cylinder 2, a main slider 10 operated by the main cylinder, a push rod 11 and a slide rod 12 provided on the main slider, and a guide 18 provided at the tip of the slide rod. , the main slider 10
a chuck slider 30 that is activated when the chuck moves by a predetermined amount, a chuck 31 that is provided on the chuck slider and is capable of holding the square pin wire before cutting, a fixed cutter 40, and the fixed cutter 40. The square pin insertion machine is equipped with a movable cutter 41 for cutting the square pin wire, and the movable cutter 41 has a square pin receiving groove into which the tip of the square pin wire supplied by the downward movement of the chuck 31 is inserted. 45 and a square pin holder 46 that covers at least a portion of the square pin receiving groove, and by forward motion cuts and holds the square pin wire into square pins 50 of a predetermined length and moves to the lower position of the push rod. The guide 18 has a main body block 60 in which a square pin guide groove 64 is formed and a cover body 61 that is urged to come into pressure contact with the main body block 60.
The square pin 50 inserted into the square pin guide groove 64 is pressed and held by the cover body 61, and the push rod 11 pushes down the square pin 50 in the square pin receiving groove 45 to push the square pin 50 into the guide 18. A square pin insertion machine characterized by performing a downward stroke of driving a square pin into a board through a square pin guide groove 64.