JPH0144493Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a device for taking out a plurality of shaft-shaped parts held in parallel inside a magnetic box to the outside at once.

2. Description of the Related Art A magnetic box is commonly used as a device for aligning and storing shaft-shaped parts. Magnet boxes are held in a floating state by aligning them parallel to each other in a magnetic field space formed between two opposing magnet plates (permanent magnet plates) using a shaft-shaped component that has magnetic parts at least on both ends. There are various ways to feed the shaft-like parts into the magnetic box, such as a free-fall method via a chute, and there are methods to take out the shaft-like parts from the inside of the magnetic box to the external tray manually. There are methods that do this automatically using a rotating drum, etc., which will be described later.

The method of removing shaft-shaped parts from a magnetic box by grasping them by hand is inefficient, and the shaft-shaped parts may get dirty or damaged because of the manual gripping. In most cases, this is done automatically using a computer, and one example will be explained with reference to FIGS. 5 and 6.

5 and 6, 1 is a magnetic box fixed in a fixed position, 2 is a shaft-shaped component, and leads 2b, 2 are connected, for example, in the opposite direction at 180 degrees from the component body 2a.
This is the diode from which b is derived. 3 is a chute for supplying the diode 2 to one end of the magnetic box 1; 4 is a rotary drum for cutting out components arranged at the other end of the magnetic box 1; 5 is a chute from which one diode 2 is supplied from the rotary drum 4. This is a conveyor that receives each item and transports them to tray 6.

The magnetic box 1 has two magnetic plates 7, 7 facing each other in parallel, and non-magnetic guide plates 8, 8 arranged close to and parallel to the inner surface of each magnetic plate 7, 7. The distance between the guides 8, 8 is set to be slightly larger than the total length of the diode 2. The magnetic plates 7, 7 are magnetized in the thickness direction and face each other with different magnetic poles to form a magnetic field space m of a magnetic field parallel to the plate thickness direction between the guide plates 8, 8. The diodes 2 supplied from the chute 3 to the magnetic field space m are aligned parallel to the direction of the magnetic field and float. In this magnetic field space m, diode 2 connects lead wire 2
The tip of either one of b, 2b is the guide plate 8, 8
The diode 2 to which the succeeding diode 2 is supplied from the chute 3 is magnetically repulsed by the succeeding diode 2 and is pushed forward.

The rotating drum 4 is disposed at an intermediate position of the front end opening of the magnetic box 1 so as to be rotatable in the direction of the arrow in FIG. Ru. When this rotating drum 4 is rotated, the diode 2 moved to the front part of the magnet box 1 is connected to the leads 2b, 2 by a pair of magnets 9, 9 arranged horizontally on the outer periphery of the rotating drum 4.
The root portion of b is magnetically attracted, rotates upward together with the rotating drum 4, and is cut out from the magnetic box 1. In this way, parts are cut out sequentially as the rotary drum 4 rotates, and the cut out diodes 2, 2, . . . are sequentially fed into the tray 6 on the conveyor 5.

Incidentally, the shaft-like component take-out device using a rotating drum as described above is suitable for taking out shaft-like parts one by one from a magnetic box and sending it out, but since the shaft-like parts are taken out one by one, The speed at which parts are taken out is slow, making it unsuitable for applications where parts are transferred all at once from a magnetic box to a tray or the like. Therefore, in order to increase the speed at which parts are taken out, a method has been proposed in which a large number of shaft-shaped parts are transferred from a magnetic box to a tray at once. A specific example thereof is shown in FIGS. 7 and 8. 10 is the magnetic box 1 mentioned above.
A take-out member 11 is arranged above the front part of the take-out member 10 and has openings on both sides of the lower end. The take-out member 11 is a cylinder formed by connecting the lower end of a piston rod 12 to the top plate 10a of the take-out member 10, and is fixed to the ceiling 13. Reference numeral 14 indicates a tray placed below the front of the magnetic box 1, and reference numeral 15 indicates a stand on which the tray 14 is placed. The cylinder 11 reciprocates the piston rod 12 to remove the member 1.
0 from inside the front of magnetic box 1 to tray 1.
Vertically descend at a constant speed to position 4 and vertically rise to the original upper limit position. The take-out member 10 is a top plate 10a.
diode 2 inside magnetic box 1 on the bottom surface of
A plurality of partition walls 10b, 10b, . . . are vertically fixed in parallel to the direction of the partition wall.

When a desired number of diodes 2, 2... are carried into the front part of the magnetic box 1 and the cylinder 11 is actuated at a desired time, the take-out member 10 descends and enters the tip of the magnetic box 1, removing the partition wall. Diodes 2, 2... are housed between the plates 10b, 10b.... Then, when the extraction member 10 further descends, the diode 2 between the partition plates 10b, 10b...
2... are pushed by the top plate 10a and move directly downward together with the take-out member 10, and when the take-out member 10 leaves the magnetic box 1 and descends to the lower limit position where it closes the upper end opening of the tray 14, many of the parts in the take-out member 10 Diodes 2, 2... are collectively connected to the tray 14
Fall naturally inward. When this one component extraction operation is completed, the extraction member 10 vertically rises and waits until the next component extraction.

Problems to be Solved by the Invention The above-mentioned device that moves the take-out member 10 up and down to take out a large number of parts at once has the advantage of fast part take-out speed, but has the following problems.

First, the take-out member 10 is lowered and the top plate 10 is
When pressing down the diode 2 in the magnetic box 1 at step a, the tip of one lead 2b of the diode 2 is in contact with one of the guide plates 8, so the diode 2 tilts and rotates from this abutting end. In some cases, the diode 2' in FIG. 9 was attracted to the guide plate 8. The diode 2' attracted to the guide plate 8 is pushed down by the take-out member 10, but since the directionality is different, the diode 2' is pulled down by the tray 1.
If it was pushed inside 4, there was a high risk that the lead would bend.

Second, before and after the take-out member 10 leaves the lower end of the magnetic box 1, the take-out member 10
Since the openings on both sides of the lead 0 and the lower ends of the magnetic plates 7 and 7 are close to each other in space, the lead 2b comes out through the opening at one end of the take-out member 10 and is attracted to the lower end of the magnetic plate 7, as shown by the diode 2'' in FIG. Such a diode 2'' may also be forcibly pushed into the toner 14 by the extraction member 10, resulting in bending of the lead, and the axial direction of the diode 2'', which is tilted significantly, may be reversed by 180 degrees. In some cases, the components are stored in the tray 14 with the same orientation.Such reversal may occur when a polarity check, etc. is carried out in a later process when shaft-like components with directionality, such as diodes, are stored in the tray with the same directionality. This becomes necessary and significantly impairs work efficiency.

Thirdly, the above-mentioned troubles tend to occur more frequently as the index is increased by increasing the descending speed of the extraction member 10, making it difficult to shorten the index.

Means for solving the problems This invention was proposed in view of the above problems.
A pair of guide plates made of a non-magnetic material are arranged in parallel to each other on the inner surfaces of a pair of magnetic plates arranged opposite each other, with their lower ends protruding from the lower ends of the magnetic plates, and a magnet for holding a shaft-shaped component parallel to each other between the guide plates. A magnet box, a take-out member having a plurality of bulkhead plates on the underside of the top plate hanging vertically in parallel to the shaft-like parts inside the magnet box, and the take-out member is lowered in a multi-stage motion, first at a low speed and then at a high speed. The above-mentioned problem is solved by constructing a vertically moving mechanism that later returns to the upper position and penetrates the inside of the magnetic box.

Effect: By lowering the ejecting member into the magnetic box in a multi-stage motion, first slow, then fast, as in the present invention, troubles such as shaft-shaped parts being attracted to the inner surface of the magnetic box can be avoided. Decrease. Furthermore, by making the lower part of the guide plate of the magnetic box protrude from the lower end of the magnetic plate, there is no possibility that the shaft-shaped component will exceed the lower end of the guide plate and be attracted to the lower end of the magnetic plate.
Furthermore, since the take-out member is lowered in a multi-stage motion, the index can be shortened.

Embodiment In one embodiment of the present invention shown in FIGS. 1 and 2, reference numeral 16 is a magnetic box fixed at a fixed position, and two parallel magnetic plates 1 are arranged facing each other.
7, 17, and two non-magnetic guide plates 18, 18 arranged close to the inner surfaces of the magnetic plates 17, 17.
has. At least the lower end portions 18', 1 of the guide plates 18, 18 located at the component removal position
8' projects sufficiently below the lower ends of the magnetic plates 17,17. 19 is magnetic box 1
It is a take-out member disposed vertically movably above the front part of the magnetic box 6, and includes a top plate 19a and a plurality of partition plates 19b, 19b parallel to the direction of shaft-shaped parts in the magnet box 1, such as diodes 2, under the top plate 19a. ...is fixed vertically. Reference numeral 20 denotes a vertical movement mechanism for vertically moving the take-out member 19 in a multi-stage motion, for example, in the drawing, there are first and second cylinders 2 connected vertically in series.
Reference numerals 1 and 22 indicate those in which the take-out member 19 is moved up and down in a two-stage motion. The rear end of the first cylinder 21 is fixed to the ceiling 23, the tip of its piston rod 24 is connected to the rear end of the second cylinder 22, and the tip of the piston rod 25 of the second cylinder 22 is connected to the top plate 19a of the takeout member 19. connected to.

Reference numeral 26 denotes a tray disposed below the take-out position of the magnetic box 16, and 27 a movable table on which the tray 26 is placed, which moves to carry the empty tray 26 directly below the take-out member 19.

Next, the operation of the above embodiment will be explained.

First, the extraction member 19 is held at the upper limit position shown in FIG. 1 by the first and second cylinders 21 and 22, and the diodes 2, 2, . . . are supplied to the magnetic box 16, and then moved to the front, which is the extraction position. . Next, at a desired time, for example, only the first cylinder 21 is actuated to push out the piston rod 24 at a low speed, and the take-out member 19 is lowered at a low speed. As shown in FIG.
During or after the operation, the second cylinder 22 is operated to lower the extraction member 19 at high speed. This high-speed descent is performed until the take-out member 19 reaches the lower limit position above the tray 26, as shown in FIG. At this lower limit position, all of the diodes 2, 2, . . . in the mounting member 9 fall naturally into the tray 26 and are stored therein. Next, the first and second cylinders 21 and 22 are used to extract the member 19.
is raised to its original upper limit position and placed on standby until the next component is taken out.

Consider the above operation. The speed of low-speed descent of the take-out member 19 by the first cylinder 21 is
The speed is set as a guideline so that the diode 2 does not tilt toward the guide plate 18 and be attracted when the diode 9 is pressed down.
As a result, the take-out member 19 descends to the intermediate position shown in FIG. 3 while storing the diodes 2, 2, . . . in a normal state without any difficulty. Next, the take-out member 19 is lowered at high speed from the intermediate position to the lower limit position in FIG.
During this descent, the diodes 2, 2... are connected to the extraction member 1.
Since the diodes 2, 2, and so on remain properly housed in the tray 9, the diodes 2, 2, etc. descend at high speed without any disturbance and reach the tray 2.
It will fall within 6. The speed of this high-speed descent is about 10 times the speed of the slow-speed descent, and this high-speed descent makes up for the work time delay during the low-speed descent, and increases the index as a whole. Also, when descending at high speed, the openings on both sides of the extraction member 19 are connected to the magnetic plate 1.
7, 17, but since the protruding lower ends 18', 18' of the guide plates 18, 18 are interposed between them, there is no fear that the diode 2 will be attracted to the lower ends of the magnetic plates 17, 17. This also allows for smooth removal.

Note that the present invention is not limited to the above-mentioned embodiments; for example, the ejecting member may be of a size that takes out all the shaft-like parts in the magnetic box in one downward movement, or the ejecting member may be moved up and down in multiple stages. The motion can also be performed by a drive source such as a single cylinder with a multi-stage motion function.

Effects of the invention According to the invention, it is possible to take out a large number of shaft-like parts in a magnetic box at once and without tilting the shaft-like parts, improving the index for taking out parts, and Since the shaft-shaped parts can be taken out without damaging them, a highly reliable shaft-shaped part removal device can be provided.

[Brief explanation of the drawing]

Figures 1 and 2 are a side view and a front view showing an embodiment of the present invention, and Figures 3 and 4 are A of Figure 2.
- It is a side view at the time of each operation seen from the A line. Fifth
6 and 6 are a side view and a plan view of a conventional shaft-shaped component extraction device, FIG. 7 and FIG. 8 are a side view and a front view of a shaft-shaped component extraction device that is the premise of the present invention,
FIG. 9 is a partial front view for explaining an example of malfunction in the apparatus shown in FIG. 7. 2... Shaft-shaped component, 16... Magnetic box, 17, 17... Magnetic plate, 18, 18...
... Guide plate, 19 ... Takeout member, 19a ... Top plate, 19b, 19b ... Partition plate, 20 ... Vertical movement mechanism.

Claims (1)

[Claims for Utility Model Registration] A pair of guide plates made of a non-magnetic material are arranged on the inner surfaces of a pair of magnetic plates arranged opposite to each other in parallel with each other, with their lower ends protruding from the lower ends of the magnetic plates, and between the guide plates A magnetic box that holds the shaft-shaped part parallel to the top plate, a plurality of partition plates on the bottom surface of the top plate, a take-out member vertically installed in parallel to the shaft-like part inside the magnetic box, and a take-out member that is initially moved at a low speed. 1. A shaft-like component ejecting device characterized by comprising a vertical movement mechanism that moves downward in a high-speed multi-stage motion and then returns to the upward direction to penetrate the inside of a magnetic box.