JPH032525Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a device that automatically takes out a plurality of magnetic shaft-shaped parts housed in a case from the case and supplies them to an external device or the like.

2. Description of the Related Art A plurality of shaft-shaped parts such as lead wires are stored together in a case for storage, transportation, etc., and are taken out from the case as needed and supplied to an electronic component assembly process.

For example, in the manufacture of DHD diodes in which a diode pellet is sandwiched between two slag leads and sealed in glass, the slag leads are stored in a case by unit number, and the leads are taken out from the case as needed. It is supplied to magnetic boxes that are stored in an aligned state. An example of a case used in this process is shown in Figs. 3 and 4. 1 is a box-shaped case, the inside of which is partitioned by a plurality of lattice-shaped partition plates 2, 2, . . . and has a bottom. It has a cylindrical shape, and a plurality of component storage chambers 3, 3, . . . are formed inside. 4, 4, ... are each parts storage room 3,
3. A plurality of slag leads (hereinafter referred to as reeds) are stored vertically in each chamber in a plurality of units. 5 is a lid plate detachably attached to the opening of the case 1.

Retrieval of the lead from Case 1 was generally done manually, but due to the problem of poor workability, recently it has been done automatically using a device as shown in Figure 5 below. It is being done. The automatic lead supply device shown in FIG. 5 will be explained below. 6 is a horizontal table, 7 is a through hole formed at the lead extraction position of table 6, and 8 is a through hole 7 with the upper end opening connected to the lower part. The chute 8 is an extending pipe-shaped chute, and a magnetic box 9, for example, is disposed at an open position at the lower end of the chute 8. Reference numeral 10 denotes a nozzle fixedly extending through the upper end of the chute 8 toward the through hole 7, and appropriately blows high-pressure air upward from the bottom of the through hole 7.

The case 1 containing the leads 4, 4, . It is pushed and slid on the table 6 in the direction of the through hole 7. And case 1
While the component storage chambers 3, 3, ... pass over the through hole 7, the leads 4, 4, ... inside the chamber move from the through hole 7 into the chute 8 due to their own weight and the air flow from the nozzle 10. Magnet Box 9 fell naturally.
automatically supplied. The magnetic box 9 aligns the leads 4, 4, . . . released from the chute 8 in parallel within a parallel magnetic field and sends them out in one direction.

Problems to be Solved by the Invention By the way, in a case made of plastic, the leads 4, 4, etc. stored in the case 1 are charged with static electricity due to friction due to vibrations when the case is moved, and as a result, the leads 4, 4, etc. stored in the case 1 are charged with static electricity. , 3, ... were electrostatically attracted to the inner wall surface, causing the following problem.

As shown in FIG. 6, suppose that the frontmost component storage chamber 3a of the case 1 passes over the through hole 7, and one lead 4a is electrostatically attracted to the rear wall m of this component storage chamber 3a. While the parts storage chamber 3a passes over the through hole 7, air is blown from the nozzle 10 and the air flows into the parts storage chamber 3a, and the air pressure at this time causes the leads 4a to move as shown by the chain line in FIG. It floats up and away from the wall m and falls down inside the through hole 7 together with the other leads 4, 4, . . . . Further, air is blown from the nozzle 10 so as to cause the lead 4a electrostatically attracted to the wall m of the component storage chamber 3a to fall. However, the above-mentioned lead 4a does not always completely detach from the wall surface m and fall when air is blown onto it; in the worst case, it may fall down a little from the wall surface m and remain there again, as shown in FIG. Something happened. The reason for this is that the lead 4a is further charged with static electricity due to the friction caused by the air flow from the nozzle 10 and becomes more likely to be attracted to the wall surface m, and that when the component storage chamber 3a passes over the through hole 7 to some extent, the air inside the chamber It is conceivable that the airflow is almost gone and the lead separation effect due to air becomes weaker.
Therefore, as shown in FIG.
When the case 1 moves while being sucked by the lead 4a, the lead 4a gets caught between the lower end of the rear wall m of the parts storage chamber 3a and the upper end of the through hole 7, as shown in FIG.
As a result, the case 1 was lifted off the table 6, making it easier for the lead to get caught, and the operation had to be stopped. Furthermore, there was a high rate of lead bending due to such lead snags.

Means for solving the problems This invention was proposed in view of the above problems.
A shaft-shaped component supply device in which a case with an opening at the bottom end is slid on a table having a through-hole penetrating in the vertical direction, and the magnetic shaft-shaped component inside the case is allowed to fall naturally through the through-hole by air blowing and its own weight. The above-mentioned problem is solved by movably attaching a magnet near the through-hole to actively draw the shaft-shaped component inside the case into the through-hole.

Function This idea applies a magnet when removing a magnetic shaft-like component by gravity from the case.By doing this, even if the shaft-like component is electrostatically attracted to the inner wall of the case, this will not occur. By blowing air and the magnetic attraction force of the magnet, it completely separates from the inner wall of the case and falls naturally, thus solving the above-mentioned conventional problems.

Embodiment An embodiment in which the present invention is applied to the apparatus shown in FIG. 5 will be described below with reference to FIGS. 1 and 2.

In FIG. 1, the same parts as in FIG. 5 are designated by the same reference numerals, and their explanation will be omitted. The only difference is that a magnet (permanent magnet) 12 is provided near the top of the chute 8, and a reciprocating magnet drive mechanism, such as a cylinder 13, is additionally provided near the outside of the top of the chute 8 to support the magnet 12. The cylinder 13 is fixed at a fixed position, and the magnet 12 is fixed to the tip of the piston rod 13'.
The magnet 12 is located at the upper limit position near the outer periphery of the upper end of the chute 8 in the cylinder 13 (the position indicated by the chain line in Fig. 1).
and a lower limit position (solid line position in FIG. 1) which is diagonally downward from the upper limit position and sufficiently distant from the chute 8.

The lead supply operation according to this embodiment is similar to the conventional apparatus shown in FIG. 5 except that the reciprocating movement of the magnet 12 is added.The case 1 slides on the table 6, and the component storage chambers 3, 3, . While passing over the through hole 7, the leads 4, 4, . Here, in the embodiment of the present invention, case 1 is shown in FIG.
When the opening is directly above the through hole 7, the magnet 12 is reciprocated by the cylinder 13. Then, while the component storage chambers 3, 3, . . . pass over the through hole 7, the leads 4, 4, . The magnetic attraction force of the magnet 12 to the leads 4, 4, . . .
It is strongest when magnet 12 is at the upper limit position, and leads 4, 4,...
... to make sure that the leads 4, 4, ... fall down. In addition, since the magnet 12 is sufficiently far away from the chute at the lower limit position, there is no inconvenience that the leads 4, 4, .

Also, the magnet 12 has the parts storage chambers 3, 3,...
The lead that was electrostatically attracted to the inner wall of the machine is actively detached and dropped. For example, as shown in FIG. 2, if a lead 4a is electrostatically attracted to the wall m of one component storage chamber 3a passing over the through hole 7, the lead 4a is moved to the wall m by the air flow from the nozzle 10.
The magnet 12 is slightly lifted from the lead 4a.
The lead 4a floating due to the magnetic attraction of the second
As shown by the chain line in the figure, it is attracted in the direction of the magnet 12, drawn into the chute 8 through the through hole 7, and falls securely.

Effects of the invention According to the invention, automatic feeding of shaft-like parts by natural falling from the case into the through-hole of the table can be reliably performed even if the shaft-like parts are electrostatically attracted to the inner wall surface of the case. Improved device availability and reliability can be achieved. Further, since troubles such as shaft-like parts getting stuck between the case and the table are drastically reduced, the shaft-like parts can be automatically fed with less damage.

[Brief explanation of drawings]

1 and 2 are side views showing an embodiment of the present invention in various operating states. 3 and 4 are a plan view and a side view showing an example of a shaft-shaped component storage case, FIG. 5 is a side view of a conventional shaft-shaped component supply device,
6 to 9 are partial side sectional views of the apparatus of FIG. 5 in various operating states. DESCRIPTION OF SYMBOLS 1... Case, 4, 4a... Shaft-like part (lead), 6... Table, 7... Through hole, 8... Chute, 10... Nozzle, 12... Magnet.

Claims (1)

[Scope of utility model registration request] On a table with a pipe-like chute communicating below a vertically penetrating through-hole, the bottomed cylindrical case opening containing a plurality of magnetic shaft-like parts is slid toward the table surface. A device that allows a shaft-like component to fall naturally from a through hole into a chute, which is provided with a nozzle that blows air toward the through hole, and a magnet that is close to and separated from the through hole outside the chute. Features: Shaft-shaped component feeding device.