JPS6344318B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mechanism for feeding a ladder-shaped electronic component series, which is made up of a plurality of electronic components connected in a ladder shape, into an automatic insertion machine or the like.

As shown in Fig. 1, a ladder-shaped electronic component chain is a ladder-shaped device in which a plurality of element parts 2 are connected by two leads 4.
It is separated into individual electronic components and attached to a printed circuit board, etc. Conventionally, such electronic parts series6
As the feeding mechanism, a mechanism is used in which one feeding claw is brought into contact with the element section 2 and moved along the longitudinal direction of the electronic component string 6, thereby feeding the electronic component string 6 intermittently at a constant pitch. was. However, in this mechanism, the load of the feed claw is concentrated on one element part 2, so the soldered part between the element part 2 and the lead 4 may peel off and break, or fragile electronic parts such as cylindrical capacitors may In this case, there was a problem in that the element portion 2 was often damaged. Therefore, in order to reduce the load applied to the element section 2, a mechanism in which two feed pawls are provided has been attempted. However, since the spacing between the two feed claws was also fixed, if the pitch of each element part 2 of the electronic component series 6 fluctuates due to an error, the pitch of the element part 2 and the two feed claws may change. As a result, the load of the feed pawl is concentrated on one of the element portions 2, resulting in the same inconvenience as in the case of a mechanism with one feed pawl.

The present invention aims to eliminate such conventional drawbacks, and by providing a plurality of feed claws whose pitch can be varied, even if the pitch between elements of a series of electronic components fluctuates, this variation can be avoided. The pitch of the feed pawl changes accordingly, so that the load of the feed pawl is always distributed and applied to a plurality of element parts.

Next, an embodiment of the present invention will be described with reference to the drawings regarding the case where the electronic component series 6 shown in FIG. 1 is sent.

FIG. 2 is a perspective view of the feeding mechanism of the ladder-shaped electronic component series 6 according to the present invention. Reference numeral 8 denotes a slider attached to the automatic insertion machine main body (not shown), and the slider 8 is designed to reciprocate along the longitudinal direction of the electronic component series 6. A block 12 is movably attached to two supports 10 fixed to the slider 8 so as to be parallel to the longitudinal direction of the electronic component chain 6. The block 12 is biased toward the slider 8 by a spring 14, and this biasing force is adjusted to approximately 1/2 of the feeding resistance of the electronic component chain 6 by moving a nut 16. A screw 18 is used to adjust the distance between the slider 8 and the block 12, and one end of the screw 18 is in contact with the front surface of the block 12. 20 and 22 are feed claws for driving the electronic component chain 6, and the feed claws 20 and 22 are fixed shafts 24 and 26 provided on the slider 8 and the block 12, respectively.
It is rotatably mounted. 28 is the feed claw 20,
The fixed shaft 24,
This is a torsion spring attached to 26. A chute 30 has a groove 30a through which the electronic component series 6 passes, and is fixed to the main body of the automatic insertion machine.

Next, the operation of this ladder-shaped electronic component series feeding mechanism will be explained with reference to FIGS. 3A to 3D. First, as shown in A, adjust the distance between the slider 8 and the block 12 with the screw 18, and set the pitch P at the tips of the feed claws 20 and 22 to be slightly smaller than the pitch Q of the element section 2 of the electronic component series 6. At the same time, the spring 14
The feed pawl 22 that is biased is brought into contact with the element portion 2b so that a gap is formed between the feed pawl 20 and the element portion 2a. In this state, when the slider 8 is moved to the left in the figure, the spring 14 is
Because the spring 14 is only compressed, the feed pawl 22 remains in contact with the element portion 2b and does not move, but the other feed pawl 20 moves to the left together with the slider 8. It moves and eventually comes into contact with the element portion 2a as shown in FIG. When the slider 8 continues to move further, the two element parts 2a are moved this time.
and 2b are simultaneously pressed by the feed claws 20 and 22, respectively, and the electronic component series 6 is fed by one pitch Q over the chute 30 as shown in C. By repeating these operations A to C, the electronic component chain 6 is intermittently sent one pitch at a time to the left. Note that when the slider 8 returns from the state C to the state A in FIG.
2 moves over the element parts 2b and 2C by rotating against the torsion spring 28 as shown in d. This torsion spring 28 does not necessarily need to be provided when the chute 30 is in a horizontal position.

4A and 4B show another embodiment of the present invention, in which 8' is a slider that reciprocates along the longitudinal direction of the electronic component chain 6, 10' is a column fixed to the slider 8', and 12 ' is a block movably attached to the support column 10'. A spring 14' is interposed between the block 12' and the slider 8', and the distance between the block 12' and the slider 8' can be adjusted by turning a nut 16'. The feed claws 20' and 22' are rotatably attached to fixed shafts 24' and 26' provided on the slider 8' and the block 12', respectively. The operation of the feed mechanism of this ladder-shaped electronic component series will be explained with reference to FIG. 4. First, as shown in A, the feed pawl 2 is
0' and the pitch P' at the tip of the feed pawl 22' are set slightly larger than the pitch Q of the element section 2 of the electronic component series 6, and the feed pawl 22' that is biased by the spring 14' is attached to the element section 2. bring it into contact with. When the slider 8' is moved to the left in this state, the spring 14' continues to contract until the other feed claw 20' comes into contact with the element section 2, so the feed claw 22' does not move. Feed claw 2 like B
From the point in time when 0' comes into contact with the element part 2, the electronic component chain 6 is moved one pitch Q to the left on the chute 30 by the two feed claws 20' and 22', just as in the previous embodiment. Sent.

Note that the movement of the sliders 8, 8' does not necessarily have to be a linear reciprocating motion, and the sliders 8, 8' may be attached to the tips of swinging arms to cause an arcuate reciprocating motion. Also, pillar 1
0 and 10' can also be integrally molded with the sliders 8 and 8'. Further, blocks 12, 12' whose positions change with respect to the sliders 8, 8' and feed claws 22,
22' is not limited to one set, but may be provided in a plurality of sets. When the total number of feed claws is N and the feed resistance of the electronic component chain 6 is F, the spring 14 that biases the feed claws,
It is desirable to select the strength of 14' to be around F/N so that the force is evenly distributed to each feed claw.

As described above, the present invention includes sliders 8 and 8' that reciprocate along the longitudinal direction of a series of electronic components, pillars 10 and 10' that are fixed to the sliders and extend parallel to the direction of movement of the sliders, and pillars 10 and 10' that are fixed to the sliders and extend parallel to the slider movement direction. , 10', movably attached to the blocks 12, 12';
Blocks 12 and 12' are arranged in the feeding direction of the electronic component chain 6.
and springs 14, 14' for biasing the sliders 8, 8' and blocks 12, 12', respectively.
feed claws 20, 20' and second feed claws 22, 2
2' is rotatably provided. The feeding mechanism for the ladder-shaped electronic component chain according to the present invention is provided with a plurality of feed pawls that can change the pitch, so even if the pitch of the element part of the ladder-shaped electronic component chain fluctuates due to an error, the feed mechanism will not be able to adjust the pitch of the ladder-shaped electronic component chain. The pitch of the pawl changes accordingly, and each feed pawl reliably contacts a separate element portion to drive the electronic component chain. Therefore, since the driving force is always distributed and applied to multiple element parts, it is possible to stably insert a series of ladder-shaped electronic components into an automatic insertion machine, etc. without breaking the soldered parts of weak leads or damaging the element parts. can be sent to.

[Brief explanation of drawings]

Figure 1 is a plan view of a ladder-shaped electronic component chain;
The figure is a perspective view showing one embodiment of a feeding mechanism for a ladder-shaped electronic component chain according to the present invention, FIGS. FIG. 6 is an explanatory diagram of an example operation. 2...Element part, 4...Lead,...Electronic component series, 8, 8'...Slider, 14, 14'...Spring, 20, 20'...First feed claw, 22, 2
2'...Second feed claw.

Claims (1)

[Claims] 1. In a ladder-shaped electronic component chain feeding mechanism formed by connecting a plurality of electronic components in a ladder shape, a slider that reciprocates along the longitudinal direction of the electronic component chain;
The slider includes a support that is fixed to the slider and extends parallel to the direction of movement of the slider, a block that is movably attached to the support, and a spring that biases the block in the direction in which the electronic parts are fed. A feed mechanism for ladder-shaped electronic components, characterized in that a feed claw is rotatably provided on the block, and a second feed claw is rotatably provided on the block.