JPH01288516A - Control of vibration parts linear feeder - Google Patents

Abstract

PURPOSE:To prevent passage holes from being clogged and make feeding smooth in a linear feeder for tantalum condenser or the like by intermittently driving and stopping the feeder. CONSTITUTION:Applying torsional vibration to a bowl 11, parts m in the bowl 11 are transferred along an upper stage track 31 and dropped through cuts 34 down to a lower stage track 31. Overlapping parts m are guided by a wiper plate 32, dropped down to the bowl 11, and the remaining parts are aligned in a single layer and row and introduced to an attitude retention track 35. Attitude of the parts is aligned with the attitude retention track 35 and the parts in multiple rows are dropped to the cuts 43. The parts then receive aligning action at an aligning section 36, receive attitude correction at an attitude correction section 37, and fed to a linear vibration feeder 20 via an attitude retention track 38. In this case, energization to a vibration feeder coil (not shown) is performed intermittently to prevent the passage holes from being clogged and to make the feeding smooth.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a method of controlling a vibrating parts sorting device.

[Conventional technology and its problems]

For example, the part shown in Fig. 1 is a tantalum capacitor, and electrodes (31 (4)) are attached to both ends of the main body (2), and one electrode (4) has a protrusion (4a). This determines the polarity of this capacitor.Now, such a component (1) should be moved to the next process in the direction shown by the arrow, that is, with the electrode (3) side facing forward. There is a case where we want to supply the center of gravity G of this part (1).
is deviated toward the electrode (3) as shown. When supplying such a part (1) to the next process in the orientation shown in the figure, the center of gravity G of this part (1) is deviated toward the electrode (3). Part (1) is
Drop the tip (from the pole (3) side) into the feeding hole, and place the component (1) facing backwards.
After the electrode (4) side passes above the through hole, the electrode (3) side is dropped into the through hole from the rear end (electrode (3) side) to adjust the front and back posture and then supplied to the next step. Such parts sorting devices are widely known. For example, a vibrating parts feeder is used as such a device, and the above-mentioned feeding hole is provided in the vibrating parts feeder. However,
At this time, the component (1) should fall smoothly into the above-mentioned conveyance hole while adjusting its posture as described above, but these days, such components have become extremely small. When this is fed to the next process with a high supply efficiency per unit time M,9, it tends to become clogged in the above-mentioned feeding hole. - If the blockage occurs, the following parts (1)
However, it gets on top of this, making the blockage even stronger, and it is no longer supplied to the next process.

[Problems to be solved by the present invention]

The present invention has been made in view of the above-mentioned problems, and even if the center of gravity of the component is deviated toward one end, the alignment hole is It is an object of the present invention to provide a control method for a vibrating parts sorting device that can smoothly supply such parts to the next process in an adjusted posture without clogging the parts inside.

[Means to solve the problem]

The above-mentioned problem involves transporting parts using vibration, and taking advantage of the fact that the center of gravity of the part is shifted to one end, the parts in a forward-facing position are dropped from the tip into the conveyance hole. , a vibrating parts sorting device which adjusts the front and back posture of parts by dropping them from the rear end into the through hole after the tip of the part facing backward passes above the through hole. This is achieved by a control method for a vibrating parts sorting device characterized in that it is driven and stopped intermittently.

[For production]

The pressing force of the parts flowing upstream of the feed hole is small due to intermittent operation, and the parts fall smoothly into the feed hole. Furthermore, even if the blockage does not occur, an impact force is applied by the drive->stop-drive process, and the blockage will not grow.

〔Example〕

Hereinafter, a vibrating component sorting device according to an embodiment of the present invention will be described. It is assumed that the mental capacitor (1) shown in FIG. 1 is applied to this embodiment. In the figure, the vibrating parts feeder is shown as a whole (indicated by 10, this ball 0), and at the bottom of l is a movable core (2
) is fixed and is supported so as to vibrate by a plate C4 which is inclined at equal angular intervals with the base (to) facing the plate C4. An electromagnet (G) around which a coil (C) is wound is fixed on the base (C) while maintaining a gap with the above-mentioned movable core (2). The base is supported on the floor by anti-vibration rubber α force. A known torsional vibration driving section is constituted by an electromagnet (A), a leaf spring C4), etc., and the entire structure is covered with a cylindrical cover (G).

As shown in FIGS. 2 and 3, a linear vibrating feeder (4) is disposed at the discharge end of the vibrating parts feeder (lf). A leaf spring mounting block (221) is integrally fixed to the bottom surface of the trough f211, and is connected to the base block by a pair of front and rear leaf springs C231031 arranged at an angle. A movable core +251 is fixed to the plate mounting block by protruding downward, and the base block (24I
An electromagnet (27) having a coil 26+ wound thereon is fixed.

When AC current is applied to the coil (2B+), the movable core (251
is attracted, and the width trough f21J is drawn by the action of the leaf spring (c).
performs linear vibration in the X-perpendicular direction with respect to the longitudinal direction of the leaf spring (23), and the linear vibration driving section configured in this manner is covered with a cover C281. And the whole of this linear vibratory feeder■
It is supported on a vibration isolating rubber (29+, pedestal E), and its height relative to the parts feeder QQ is thereby adjusted.

In the vibrating parts feeder αQ, a spiral parts transfer track 6υ is formed on the inner peripheral wall of the ball circle, and a wiper blade 321 shown in FIG. 4 is attached to the top of the track C3U. It is fixed at one end between the two mounting parts. This wiper blade (32
The distance between the lower end of 1 and the track turn is part m (indicated as (1) in FIG. 1, but in this example, it is indicated as m).
It is larger than the thickness of , but smaller than twice this thickness. Further, the track C311 has two arc-shaped cutaways, which form stepped portions (34a) as clearly shown in FIG.

The end (31a) of the spiral track 3D VC is formed by integrally fixing a block on which the posture maintaining track section 69 is formed, and further includes a block on the downstream side of which an alignment section (3G) is formed. is fixed. In addition to the aligning part (36), this block is provided with a posture correcting part (3 forces), and an attitude maintaining track is formed downstream of this.

Referring to FIG. 6, the posture maintaining track section (toward) will be explained. This block has a track 140 with a cross-sectional shape of an inverted trapezoid, and a side wall section (4I).
) and the other side wall portion 14z are inclined downward toward the transfer surface of the truck (4f). Three notches are provided on the inner blade side of the ball (1 o'clock) of the other side wall portion 144.The parts supplied from the track (41) with a slight overflow are made to fall there. .

FIG. 7 shows details of the alignment section 436).
Side wall portions +421 (53) are formed on both sides of the transfer surface 5D, and one side wall portion IQ is inclined downward with respect to the transfer surface 5D. An air jet pipe (541) is disposed adjacent to the side wall portion 14, and a nozzle 551 is disposed at the tip of the air jet pipe (541). In addition, the transfer surface 6Il is slightly inclined downward toward the side wall 63), and the height of this side wall [F]J is the same as that of the part m, as is clear from Fig. 8N. A pocket for returning parts is formed in the radially outward direction of such an aligned section (see figure), and this pocket consists of a side wall (56) and a bottom surface (60). The parts that have fallen onto the bottom surface (60) are moved by the torsional vibration force of the ball U and fall into the ball U.

Next, referring to FIGS. 9N and 9B, the details of the posture correction unit G force will be explained. A part of the ball CIIJ is formed with a through hole for alignment in an oblique direction. Part (61a) passes through the part (61a) and the part m falls into the through hole (6II. Regarding the ball striking opening part (61a), the part m passes over the upstream wall part X and falls into the through hole H. However, when the part m arrives at the desired forward posture on the upstream wall X with respect to the opening (61a) as shown in FIG. After passing through the upstream edge, its tip (electrode (3) side) as shown by arrow a.
It falls into the through hole (611), but the protrusion (4
A] side or electrode 8) Part m transferred over wall part X with (4) side at the beginning
As shown in FIG. 9B, the center of gravity G is unevenly distributed on the electrode (3) side, so that the protrusion (4a) reaches the wall before the center of gravity G passes through the upstream edge of the opening (61a). The rear end (electrode
When the electrode (3) side comes off the upstream edge of the opening (61a), it falls from the electrode (3) side into the through hole 6D as shown by the arrow. Therefore, the structure is such that the component m is guided to the downstream side in an attitude as shown in FIG. Furthermore, a guide surface aα is formed on the downstream side of the wall portion y, and this extends in a diagonal direction with respect to the transport direction of the component m. If for some reason the part m is transferred over the wall y without falling into the opening (61a), it will overflow the face of this guide and fall into the ball (within 1η). There is.

Next, the configuration related to the trough (2II) of the linear vibratory feeder will be explained with reference to FIGS. 10 and 11. The trough I2D is fixed to a support block. The above-mentioned plate mounting block o
-C is fixed relative to y. The upper surface of the trough [2] J has a side wall forming plate (711 and the width of this and part m is
The other side wall forming plate (721) is fixed with a slightly larger gap provided, and a component detection element σ4 for detecting overflow of components is located at a position as clearly shown in FIG.
It is fixed to the trough [211] via a mounting member (73). The detection part (74a) of the component detection element (T4) is arranged so as to shine light on the component m on the track groove formed by the side wall formation radius σ3,
The presence or absence of the component is detected by the reflected light.

As shown in FIGS. 3 and 11, on the downstream side of the component detection element H described above, an opening (92) is formed in the trough fj11, and the side wall forming plate σB is aligned with the opening (92).
There are also holes formed. An air jet pipe (90) is disposed on the side of this opening (921), and its nozzle (90a) faces the parts transfer surface of the trough (211), and the part detection element on the upstream side (7) When it is determined that the parts are in an overflow state due to seepage, the air jet pipe (90) is activated to blow the parts m below the nozzle (90a) into the opening (92). The ball is returned to the α term through the guide chute 931.The guide chute (g) is
Even if it is not explicitly stated, it is integrally fixed to the ball α〃, and the component mf ball C1,
).

The vibrating component sorting device according to the embodiment of the present invention is constructed as described above, and its operation will be explained next.

Although part m is only shown sporadically in Fig. 3,
In reality, it is assumed that the balls are thrown into pronation at a higher density. When alternating current is applied to the coil (G), the pole circle is
As is known, torsional vibration is performed, and the ball pronation part m is
Transported along a truck system. When the notch 6a is reached, the parts m in the row on the radially inner blade side of the multi-row parts as shown in FIG.
D becomes a narrow road and falls into the cutout country.

Then, it falls onto the stepped portion (34a), and is further transferred by the circular arc-shaped inner wall surface of this notch (B) under the transfer action of torsional vibration from here, and falls onto the track portion below.

(J1) At this time, component m does not fall directly from the truck C311 in the upper part to the trunk circle in the lower part, but falls through the stepped part (34a), so that part m is not damaged by receiving a large impact force. It can be prevented.

The parts that pass through the narrow passage in multiple rows then reach the wiper blade 32), as is clearly shown in FIG.

The overlapping parts m are caused to fall into the inside of the shibor circle by the guiding action of the wiper blade 2.

FIG. 4 shows a state in which two or more layers of parts m are arranged in even more rows by the wiper blade c32. - The components guided downstream in multiple layers are further provided with a notch (34I) on the downstream side, so they are subjected to the same effect as described above and are arranged in one layer. is guided to the attitude holding track (351).Also, even if the part is inserted between the notch on the upstream side and the wiper blade 1321 when inserting the first part, the attitude of the part will be maintained in the rnVi-layer-column. It is clear that the holding trunk is led to the field.

The three attitude-holding tracks are clearly shown in FIG.
12; Width of item m is slightly larger υ and both side walls t40f411
is inclined downward with respect to the bottom surface of the track t41 and has an inverted trapezoidal shape. Therefore, the component m which is oriented sideways in this case is affected by the inclination of the side wall portion (401f411) as shown in FIG. As shown in , the parts are guided downstream by the action directed in the longitudinal direction.The parts that reach this point in multiple rows fall into the notch (431).

Next, with reference to FIGS. 7 and 8, and FIG. 8B, the action of the alignment part will be explained. As described above, the parts m are guided to this \ with the longitudinal direction facing the transport direction, but the overlapping parts m' in this \ are transported by the truck 5D as shown in Fig. 8N. Because the surface is inclined downward to the left in the figure, it smoothly passes above the side wall part 3) and is formed between it and the side wall haze as shown in Figure 8N. The ball is passed back into the α term through the aperture. or,
As shown in Fig. 8B, since the air ejection pipe 541 is constantly ejecting air, the air ejected from the nozzle 55) causes the part m'' that has arrived sideways to the It is blown away to the left and returned into the pole through an opening formed between the side wall portion r86).

Next, refer to Figures 9A and 9B and check the posture correction section (37).
The effect of No. 1 will be explained.

When the part m reaches the opening (61a) of the posture corrector (37) in the posture shown in FIG. 1, its center of gravity G is unevenly located on the electrode (3) side as shown in FIG. As a result, when the center of gravity G passes through the upstream edge of the opening (61a), it falls from the tip, and as shown by arrow a, the center of gravity G passes through the upstream edge of the opening (61a).
It passes through 1J and is guided to the downstream side. In addition, in the case of a component in the opposite orientation, the center of gravity G is also unevenly distributed on the electrode (3) side, so that the component faces the electrode (4) as shown in Fig. 9B.
The protruding part (4a) integral with the ball O is placed on the wall y of the ball O, and furthermore, it is transferred as it is, and its rear end is attached to the opening (61).
If you proceed from the upper edge of a) by 5, as shown by the arrow,
It falls into the through hole (c) B from the rear end side. So here it is!
All fallen parts should be placed in the position shown in Figure 1.
It is designed to be guided to the open side of the posture maintaining track on the downstream side. It is then supplied to the linear vibratory feeder (4) through this. In the linear vibration feeder (4), the posture is maintained and the component m is transferred by linear vibration, but if the component m is in an overflow state in the linear vibration feeder (e), the component detection element σ will be detected. When detected by the air jet pipe (on the downstream side), air is blown out and falls into the part m-opening (92).The fallen part m passes through the guide sheet (side I'm trying to get it back to the yen.

Therefore, the trough (2IJ) in the linear vibratory feeder (A)
As shown in Figure 3, a hole is formed at the tip of the hole, and a vacuum pipe (not shown) is located below this hole. It is connected via a solenoid valve, and this solenoid valve is turned on.
, When the OFF state is OFF, the part m is vacuum-adsorbed and temporarily stopped. Even if it is not shown in the diagram, when the next process requires parts, the solenoid valve is turned on.
N, the part m that was closed and suctioned is opened.

As described above, parts m (1
) can be maintained in a predetermined attitude in the direction indicated by the arrow and supplied to the next process one by one.According to the present invention, the following control method is further implemented.

That is, the vibrating parts feeder σQ is intermittently driven by intermittent energization of the coil α, but according to this embodiment, the coil (to) is energized with an alternating current of 250H2,
Therefore, the alternating attraction force is generated at 2 s OHZ, and when such vibration is operated for 0.2 [sec], it is stopped for the next 0.1 [5 ecl].

That is, intermittent operation is performed in which the motor is driven for 0.2 [sec] and stopped for 0.1 [sec]. Such a control method provides the following effects.

In other words, recently there has been an increasing demand for high-speed supply of electronic components, and when aligning small electronic components using the above-mentioned apparatus, it is necessary to supply electronic components at high speed as shown in FIG. 9C. The more troubles occur within the opening (61a). That is, the part m is transported at high speed over the upstream side wall X of the ball αη, and in this step 5, the part m is in a predetermined posture as described above, and the center of gravity G is located at the opening ( When leaving the upper part of 61a), ＼ also falls into the pressurization hole 1i11, and the oppositely oriented part m passes the edge of the hole, not the center of gravity G, when its rear end passes through the edge of the hole 9B.
It falls into the through hole fiυ as shown in the figure. Therefore, if the flow of parts changes greatly from the flow on the upstream side, the faster parts are fed into the opening (61a), the more the parts on the upstream wall X will exert back pressure on the parts in front. Due to the change in direction of these parts and their interaction, a blockage condition as shown in Figure 9C often occurred. If it is blocked in this way, the blockage will become even stronger even if parts m are brought in one after another, and it will not be possible to pass through this through hole 6v smoothly, and the parts will not be supplied to the next process. It was no longer possible.

However, the present invention applies a certain acceleration change to the part m when it changes from drive to stop due to the above-mentioned intermittent operation, and as a result, the part m receives an impulsive force and causes the part m to move as shown in FIG. 9C. Any attempt to create an occlusion will be destroyed, allowing flow to continue into the smooth through hole ill. In this way, even if parts feeder αQ feeds parts m at high speed to this posture correction section (3n), since it is an intermittent operation, the back pressure is not so large and there is no blockage phenomenon, and the above-mentioned correction action can be carried out smoothly. can be sent to the next process.

Although the embodiments of the present invention have been described above, it goes without saying that the present invention is not limited thereto, and various modifications can be made based on the technical idea of the present invention.

For example, in the above embodiment, a tantalum capacitor as shown in FIG. 1 is used as a component, but the present invention is not limited to this.
The invention is applicable to all applications.

Furthermore, in the above embodiments, various alignment means or alignment means are provided on the upstream and downstream sides of the posture correction section l37), but these may not be provided or they may be combined with other alignment means. However, this invention can be applied. Alternatively, a plurality of posture correction regions as shown in FIG. 9A may be provided.

〔Effect of the invention〕

As described above, according to the control method of the vibrating parts sorting device of the present invention, parts whose center of gravity is deviated to one end can be delivered to the next process in a desired posture at a higher feeding speed than before. can be supplied.

[Brief explanation of the drawing]

FIG. 1 is an enlarged perspective view of parts applied to an embodiment of the present invention, FIG. 2 is a partially cutaway side view of a vibrating parts sorting device according to an embodiment of the present invention, and FIG. 3 is a plan view of the same, and FIG. 4 is an enlarged perspective view of the wiper blade portion in FIG. 3, FIG. 5 is an enlarged perspective view of the notch in FIG. 3, and FIG. 6 is an enlarged perspective view showing details of the attitude maintaining track in FIG. 3. 7th
The figure is an enlarged perspective view showing the details of the alignment part in Fig. 3, Figs. 8A and 8B are enlarged cross-sectional views along the line ■-■ in Fig. 3, and Figs. 9N, 9B, and 9C are , 3rd
FIG. 10 is an enlarged sectional view in the II-IK X-ray direction in the figure.
FIG. 3 is an enlarged sectional view along the line X--X, and FIG. 11 is an enlarged sectional view along the line XI-XIX in FIG. In the figure,

Claims (1)

[Claims] The parts are transferred by vibration, and by taking advantage of the fact that the center of gravity of the part is deviated to one end, the parts in the forward-facing position are dropped from the tip into the conveyance hole, and the parts in the backward-facing position are dropped. In a method of controlling a vibrating parts sorting device, the parts are fed with their front and back postures adjusted by dropping the parts from their rear ends into the through holes after their leading ends pass above the through holes, A method of controlling a vibrating parts conveying device, characterized in that it is driven and stopped intermittently.