JPH0223111A - Vibrating part supply machine - Google Patents

Abstract

PURPOSE:To positively hold a part by stopping and separating parts one by one by a gate means on the head of a linear vibrating feeder, and reducing the amplitude of the feeder to hold the part when the machine is stopped, thereby returning the amplitude to its original large amplitude. CONSTITUTION:The parts m are transferred from a vibrating part-feeder not illustrated through a first linear vibrating feeder 2 to a trough 33 of a second linear vibrating feeder 3. The parts m on the trough 33 are positioned and stopped by a gate rod 46a protruded by a cylinder 46. The next part m2 and the following parts are separated from the leading part m1 by protruding a gate rod 47a. Immediately before a sucking nozzle not illustrated sucks the part m1, the amplitude of the linear vibrating feeder 3 is reduced. The part is sucked and transferred to the following process. Simultaneously with completion of the sucking, the amplitude is returned to its original amplitude substantially and the following part is transferred. By this constitution, the oscillation of the part during the part-sucking operation can be restricted, and the part can thus be positively sucked.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vibrating parts feeder used for holding parts in a predetermined posture and feeding them one by one to the next process.

[Conventional technology and its problems]

At the tip of the trough of the linear vibrating feeder equipped with a part attitude holding means, the part is once stopped from being transferred by a stopper means,
A vibrating component feeder in which the component is gripped by a component gripping means for transporting the next step at this stop position and transported to the next step is widely known. In particular, the attitude holding means is composed of a pair of belt-like members extending linearly in parallel with a gap in the trough, and for example, the parts to be supplied are electronic parts such as crystal oscillators, transistors, and capacitors, and the main body Alternatively, it consists of a head and legs extending in one direction from the head, that is, a lead wire, and the lead wire is inserted into the gap, and the head is suspended by the pair of band-like members to maintain its posture. In such a vibrating parts feeder, it is sufficient if the head is flat;
Even if such a part is transferred by vibration with a linear vibration feeder and the transfer is stopped by the stopper means, since the part is spherical, it is not held in a fixed position but in a predetermined posture, but the head is stopped. It is in a swinging state. In such a state, if the component gripping means is for a small component and is a vacuum suction means, it should have an elongated shape like a hypodermic needle and have a diameter large enough to grip the head of the component. However, even if such a component gripping means does not grasp a swinging component at a stopped position, the component gripping means only moves along a predetermined trajectory, so even if it does not pick up the component, it will not come into contact with the head. Otherwise, you may hit the corner of the head and fail to grasp it. In other words, the parts will fall.

In this case, the component gripping means moves without gripping it, resulting in idle operation before proceeding to the next process, which causes inconvenience to the next process.

[Problem that the invention seeks to solve]

The present invention has been made in view of the above-mentioned problems.No matter what shape the part is, when it is gripped by some kind of part gripping means when the transfer is stopped at the tip of the trough, it is surely gripped and the next step is carried out. The purpose is to provide a vibrating parts supply machine that can supply parts to

[Means to solve the problem]

The above purpose is to temporarily stop the transfer of the part by a stopper means at the tip of the trough of a linear vibration feeder equipped with a part attitude holding means, and at this stop position, grip the part by a part gripping means for conveying the next process. In the vibrating parts feeder configured to transport the parts to the next process, the parts are separated one by one by a gate means provided near the tip of the trough and transported to the stopping position, and the linear vibration The swinging width of the feeder is controlled in two stages with large and small swinging widths, and at least after the feeder is separated and fed to the stop position by the gate means, the swinging width is switched from the large swinging width to the small swinging width. gripping the component at the stop position with the component gripping means in a state where the component hardly swings;
After that, the vibrating parts feeder is characterized in that the vibration width is changed again from the small vibration width to the dog vibration width to transfer the following components to the stop position, or the component posture holding means is arranged so that the vibration width is changed to the dog width again. The part to be supplied consists of a pair of belt-shaped members extending straight and parallel with a gap therebetween, and the part to be supplied consists of a head part and a leg part extending in one direction from the head part. This is achieved by the vibrating parts feeder in which the head is suspended by the pair of band-like members and its posture is maintained.

[For production]

The above-mentioned vibrating parts feeder temporarily stops the transfer of the parts at the tip of the trough of the linear vibrating feeder using a stopper means,
At this stop position, the component is gripped by a component gripping means for conveying to the next process and conveyed to the next process. Furthermore, even if the component has a shape that is likely to swing, the width of the linear vibrating feeder is switched from large to small to reduce the swing, and the component gripping means for the next process reliably grips the part. Further, in order to quickly transfer the part after gripping it to the stopping position, the imaging width of the linear vibration feeder is increased and returned to the original imaging width. Therefore, the efficiency of supplying to the next process is not reduced in any way.

[Implementation row]

1 to 5 show embodiments of the present invention.

In the figure, a linear vibrating feeder (2) is connected close to the supply end of the vibrating parts feeder (1), and is further aligned in its extension direction to move vertically along the transfer path with the linear vibrating feeder (2). Linear vibrating feeders (8) are connected with gaps in between and partially overlapping. Next, the vibrating parts feeder (1
) will be explained in detail.

The vibrating parts feeder (1) has a known structure, with a spiral track (6) formed within the ball (4). A movable core (6) is integrally fixed to the bottom surface of the ball (4), and the movable core (6) is connected to the base (γ ) is combined with An electromagnet α having a coil (9) wound thereon is fixed to the base (γ) so as to face the movable core (6) with a slight gap therebetween. In addition, the drive unit configured as described above is covered with a cylindrical cover (covered with a base).
7), a plurality of height-adjustable legs 01 with anti-vibration rubber are provided at the bottom, and the legs (11) are supported by the base α.

Further, a trough in which a V-shaped groove is formed is provided at the upper end of the spiral track (6). (in the trough) is fixed to the pocket 0→ via the mounting plate α6). Pocket a4 is formed on the outside of the outer wall of the ball (4), and when parts other than the predetermined posture are removed from the transfer path, they are received here,
guided into the hole (14a) formed in the outer wall of the ball (4),
The parts are returned into the ball (4).

Next, details of the linear vibrating feeder (2) connected to the vibrating parts feeder (1) will be explained.

The trough C17) of the linear vibration feeder (2) is the trough (
15) and the vibration imaging width with a gap between them that does not interfere with each other. The trough (17) includes a pair of band-shaped members (17a) (17) extending linearly in parallel with a gap (8) in between.
1)), and an attitude turning section (18) is provided on the upstream side to form a downward slope toward the gap (A). Further, wipers (19a) (19b) are provided adjacent to the trough (1) constructed as described above.

The wiper (19; 1) (19b) is fixed at the position shown in FIG. 2 in the pocket (14), and is designed to remove parts that are transferred in a posture other than a predetermined posture. or,
The removed parts fall from the trough (X7) into a pocket C14) arranged below and are returned into the bowl (4) through the hole (14a).

A buronokuni 1) is fixed to the bottom of the trough 0f). The block 12]) is fixed to the support base -, and the support base (
A movable core mounting block ('22a) is fixed to the bottom of the base unit by hanging from it.
An electromagnet (goods) wrapped around a coil (goods) fixed to
and are facing each other with a gap. The support stand is connected to the base by a pair of front and rear inclined plate springs f231El.

Further, this linear vibration feeder (2) is equipped with the following fencing mechanism.

A balance weight μs) is fixed to the bottom of the base r27), and this is coupled to the base factor 1 by a vibration-proofing inclined leaf spring (301f301).

In addition, there is a table (
81), and the pedestal group is fixed with K bolts on the base Q3). Further, a downstream linear vibration feeder (3) is also supported on the table (31) at the top of the pedestal (to). Next, details of the linear vibration feeder (3) will be explained.

The trough (wing) of the linear vibratory feeder (8) is arranged so that the trough α7) of the linear vibratory feeder (2) and the transfer path partially overlap in the vertical direction. The trough (33) consists of a pair of band-shaped members (33a) (33
b) Consisting of: A gate section formed between a pair of pneumatic cylinders (materials) 1 is provided on the downstream side of the trough ml.

The pneumatic cylinder [141] is fixed via a trough (an attachment member to the side wall of the mower). Pneumatic 7 cylinder tn ny)
is connected to a pneumatic source via a solenoid valve by piping (not shown), and the solenoid valve controls the inflow of air and the gate rod (462 (47a)) is extended and retracted to move the parts to the next process. Can be supplied individually.Also, gate opening,
The door (46a) continues to protrude at all times except for total replacement of parts, and by retracting it, parts can be automatically ejected.

A vacuum suction nozzle (curved) is waiting directly above the component positioned by the gate rod (46a).

It is connected to a vacuum source via a solenoid valve by a flexible tube. Also, this is not shown! The tilting mechanism moves the part up and down in the direction of arrow A, and then moves to the next process, and the part that has been positioned and stopped is conveyed to the next process.

Further, an overflow detection device (35) is provided adjacent to the trough constructed as described above. This allows the presence of parts on the trough (33) to be detected. For example, it consists of a light source and a light receiving element, with a gap (
The light receiving element is arranged so that the light from the light source passes through the rod and is received by the light receiving element, and the parts are transported on the trough (33) using a gapper, passing under the light source and blocking the light. What is necessary is to detect the presence or absence of . Further, in the above-described configuration, it is determined that an overflow has occurred if the parts continue to exist at this position for a predetermined period of time or longer, or if the distance between the parts is less than or equal to a predetermined value.

A block (36) is fixed to the bottom of the trough (36), and the block (36) is fixed to the support base (m).
) is fixed to the movable core mounting block (37a) by hanging the movable core peep 1, which is fixed to the base (4).
) An electromagnet 14-1) wound between coils fixed to
and are facing each other with a gap. The support platform) is connected to the base by a pair of front and rear inclined leaf springs +381 and +881.

At the bottom of the base (■) is a balance weight (g) for anti-vibration.
) is fixed, and this is connected to the base (g) by an inclined leaf spring for vibration isolation. The space between the bases is supported by a table G31).

The configuration of the embodiment of the present invention has been described above, and its operation will now be described.

In this example, the part that maintains its posture and is supplied to the next process is indicated by m, and consists of a head and legs (lead wires) L extending in one direction from the head, as shown in Fig. 5. The surface to which the leg l is fixed has a spherical shape.

A large amount of parts m having the above-mentioned shape are fed into the bowl (4) of the moving parts feeder (1).

When AC power is connected to electromagnet α [phase], the movable core (6)
An alternating attractive force is generated between the and the electromagnet head, and a torsional vibration force is generated by the inclined plate spring (8), which causes the ball (
4) is given. The part m inside the ball (4) rises on the spiral trunk (5) due to the torsional vibration force.

In this case, the ball (4) on which the spiral track (5) is formed may be a highly versatile ball that does not have any special alignment means. Trough μs arranged at the upper end of the track (5)
) has a 7-shaped cross-section, so parts m can pass through it in a single line with the longitudinal direction facing the transport direction. Therefore, part m, which has arrived in multiple rows, fails to ride on the groove of the trough brocade) and falls into pocket o→.

Attitude rotation part (18
) is corrected by the attitude rotation unit [phase] into a posture that can be supplied to the next process, regardless of whether the head or legs t arrive at the beginning. Part m is trough μ5)-1
At this time, the leg part t is transported with the leg part t extended in the horizontal direction, but the leg part l is smoothly guided by the gap force due to the slope of the posture turning part (18) and is fitted into the part, and the center of gravity of the part m is on the leg part 1 side. In addition, the surface on the leg side of the head is spherical, so
Easily change your posture, let your legs hang down, and your head will become trough-free.
Take a suspended position from I7). Therefore, the part m maintains the above-mentioned attitude and is transferred on the trough (17) by the linear vibration force. Also, the part that did not take the prescribed posture at the posture rotation part α8)! The parts transferred in the same position at 11 are removed from the trough (17) by the wipers (19a) and (19b) and fall into the pocket 04).

The fallen parts are returned into the ball (4) through the hole (14a). The downstream end of the trough (17) partially overlaps the transfer path with the trough of the linear vibrating feeder so as to overlap vertically. The legs of the part m transferred on the trough (17) are inserted into both the gap in the trough and the gap in the trough (33) from near the downstream end of the trough. It is then transported to a trough while maintaining a predetermined posture.

The part m transferred through the trough is positioned and stopped by the gate rod (46a) provided downstream.

The gate rod (
47a). A suction nozzle bite is waiting directly above the part m, and according to the requirements of the next process, the suction nozzle side is lowered in the direction of the arrow by a drive mechanism (not shown), and by opening the solenoid valve, the part mI is It adsorbs and rises in the direction of the arrow, and is transported to the next process. Also, parts m
1 is transferred to the next process, a solenoid valve (not shown) is controlled to control the inflow of air into the pneumatic cylinder, and the cat rod (47a) is retracted. As a result, the part m is transferred by the linear vibration force, and the gate rod (
46a), the positioning is stopped. Part m.

When the part m is transferred, the gate rod (47a) is projected and stops the part being transferred immediately after the part m. In addition, in the process of transporting the above parts m one by one to the next process, the amplitude of the linear vibration feeder (3) is controlled to be reduced immediately before the suction nozzle bite picks up the part m. The part ml is sucked by keeping the swing of the positioned and stopped part (especially easy to swing because the bottom surface of the head is spherical) to a minimum and hardly shaking. Therefore, there is no chance of failure to pick up the parts. Moreover, when the component m is attracted and rises, the amplitude is increased and returned to the original amplitude. As a result, parts 1η! It becomes faster to transport part m to the position where it was.

In addition, a linear vibration feeder (3
), it is possible to avoid the transient state that normally occurs when the power is turned on and the drive is started. In this case, the transient state means that when the power is turned on to the vibration drive unit, a rising current initially flows and becomes unstable, and by the time the vibration reaches a steady state, the vibration isolating mechanism (the vibration isolating rubber spring constant is small) There is a process of vibrating with a large amplitude at a resonance frequency determined by the weight and the weight it supports. In this transient state, the parts on the trough are shaken violently. This disturbs the posture of the parts, but according to the present embodiment, the parts will not become obstructed unless this happens, and the parts will not be shaken violently, so the suction nozzle will not scream. It does not take time to suppress the shaking until the parts can be picked up.

An overflow detection device (a)) is installed on the upstream side of the trough l33), so that it can always meet the demands of the next process.
It is monitored whether the pooled elements are pooled to a predetermined position on the trough element, that is, it is detected whether or not there is an overflow state.

When an overflow condition occurs, use a linear vibration feeder (
2) and stop driving the vibrating parts feeder (1). Also, as the parts m are sequentially supplied from the trough □□□) to the next process and the amount of parts pooled on the trough (transfer) decreases, the overflow state disappears and the linear impression feeder (2) Drives the vibrating parts feeder (1). From the trough q7) of the linear vibratory feeder (2), the parts m in a position that can be supplied as is to the next process are quickly and reliably transferred to the trough (33) of the linear vibratory feeder (8).

As described above, according to this embodiment, although the bottom of the head of part m is spherical and easily swings, it can be reliably attracted and conveyed to the next process, and the linear vibration on the downstream side No matter how fast the next process is required, the feeder (8) can always reliably hold the parts in an overflow state.

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, vacuum suction means was used to transport the parts at the tip of the trough of the linear vibration feeder to the next process, but instead of this, other means could be used as the gripping means.
For example, a chuck mechanism may be used. In this case, the chuck may be widened, the top part of the part may be gripped by narrowing the chuck, and the part may be transferred to the next step in the vicinity of the first part.

Further, a permanent magnet may be used as the gripping means.

In this case, it is applied when the head of the part is made of magnetic material, and the head is attracted by the magnetism of a permanent magnet and transferred to a predetermined position for the next process, where it is attracted by some mechanical means. All you have to do is remove the parts that are there. Alternatively, an electromagnet may be used instead of a permanent magnet to cut off the current when removing the component. Further, in the above embodiment, the stopper means is formed by protruding the driving rod of the pneumatic cylinder to stop the parts, but instead of this, it may be formed simply as an end wall.

That is, in the case of the embodiment, a pair of belt-like members was used as the posture holding means, but a member connecting the pair of belt-like members was attached at the tip of the member, and the head of the part was applied to this for stopping. All you have to do is make them touch each other.

Alternatively, if a trough with a useful cross-sectional shape is used as a part attitude holding means and a part similar to this shape is introduced to maintain the attitude, a small hole may be formed in the bottom dark side of the tip of the trough. A vacuum source is connected to this via electromagnetic pulp, and by opening the valve, the leading part is vacuum-adsorbed and stopped. When the gripping means from the next process arrives, the solenoid valve is closed and the leading part is stopped. The parts may be freed and the parts may be transferred by the gripping means.

〔Effect of the invention〕

As described above, according to the vibrating component feeder of the present invention, the posture of the component is maintained in a straight line at the tip of the trough of the vibrating feeder, but even if the component is in a swinging shape, Since the amplitude of this linear vibrating feeder is switched from high to low, the vibration can be made small and the component gripping means for the next process can reliably grip the component and transport it to the next process.

Furthermore, by switching from a small amplitude to a large amplitude, the next part can be quickly transferred to the tip, so that even if the next process requires a part at a high speed, this can always be met. In addition, since the driving of the single-linear vibration feeder is not stopped in order to suppress the swinging of the parts, the transient state that normally occurs when the power is turned on and driving is started can be avoided, and parts may be unnecessarily moved. There is no need to violently shake the parts or disturb the posture of the parts whose posture is maintained. Therefore, it is possible to provide a parts supply machine that can supply parts to the next process at high speed and reliably.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of a vibrating parts feeder according to an embodiment of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a perspective view of a linear vibrating feeder of this embodiment, and Fig. 4 is a gate for parts. FIG. 5 is a partially enlarged plan view of the section and a sectional view taken along the line v--■ in FIG. 4. In addition, in the figure,

Claims (2)

[Claims] (1) At the tip of the trough of the linear vibrating feeder equipped with a part posture holding means, the transfer of the part is stopped by the stopper means, and at this stop position, the part is gripped by the part gripping means for conveying the next process. In the vibrating parts feeder for conveying the parts to the next process, the parts are separated one by one by a gate means provided near the tip of the trough and transferred to the stopping position, and The shaking width is controlled in two stages with large and small shaking widths, and at least after the gate means separates and supplies the swinging width to the stop position, the swinging width is switched from the large swinging width to the small swinging width, and the swinging width is switched from the large swinging width to the small swinging width. The component gripping means grips the component in a state where the component is hardly oscillating, and then the swing width is switched from the small swing width to the large swing width again to move the subsequent component to the stop position. A vibrating parts feeding machine characterized by being configured to transport parts to. (2) The component posture holding means is comprised of a pair of belt-shaped members extending linearly and parallel to each other with a gap in the trough, and the component to be supplied is comprised of a head and legs extending in one direction from the head, and the legs 2. The vibrating component feeder according to claim 1, wherein the head part is inserted into the gap, and the head part is suspended by the pair of band-like members to maintain its posture.