JP3363421B2 - Automatic workpiece supply device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic workpiece feeding device capable of continuously feeding workpieces one by one.

[0002]

2. Description of the Related Art Conventionally, as a work automatic supply device for continuously supplying chip parts (work), a plurality of works W ₁ , W ₂ , W ₃ ... a feeder 11 for transporting the workpiece W ₁ is _connected, W 2, _W 3 _... accommodating portion 13a for accommodating is known to have a circular conveying table 13 formed on the outer periphery to the feeder 11.

In FIG. 5, the supply path 11 of the feeder 11
The pad 2, the light projecting portion 25, and the needle 3 are provided on the bottom surface of a.
Are provided in sequence. The supply path 11a of the linear feeder 11 is covered with an upper cover 27, and an optical sensor 26 is provided on the upper cover 27 so as to face the light projecting unit 25.

In FIG. 5, when the needle 3 rises and the pad 2 descends, the needle 3 stops the work and the optical sensor 26 is shielded from light. Next, when the pad 2 is raised and the needle 3 is lowered, the work W ₁ is pressed against the upper cover 27, and the work in front of the work W ₁ is accommodated in the storage portion 13 of the transport table 13 by the air sucked from the suction port 30.
It is stored in a. At this time, the optical sensor 26 transmits light and the transport table 13 rotates by one pitch.

As another automatic feeding device, as shown in FIG. 6, a separating pin 4 is provided on the bottom surface of the feeding path 11a of the feeder 11.
Some are equipped with.

In FIG. 6, when the separation pin 4 is lowered,
The work is stored in the storage portion 13a of the transport table 13 by the air sucked from the suction port 30. At this time, the optical sensor 26 is temporarily shielded from light, and then the separation pin 4 is raised to stop the chip component W ₁ and the transport table 13 is rotated by one pitch.

[0007]

As described above, the automatic work feeding device is known, but the following problems have occurred with the miniaturization of the work.

That is, in the automatic feeder shown in FIG.
Work W pressed against upper cover 27 by pad 2
₁ may stick to the upper cover 27, and then the supply path 11a may not be able to move smoothly.

In the automatic feeder shown in FIG. 6, the separation pin 4 is raised to separate the work W ₁ and the work W _2, for example. However, there is a problem that the rising timing of the separation pin 4 is difficult.

The present invention has been made in consideration of the above points, and provides an automatic work feeding device capable of feeding the work from the feeder while surely separating the works one by one. The purpose is to

[0011]

SUMMARY OF THE INVENTION According to the present invention, a feeder for continuously transporting a plurality of works, a storage unit for storing the works is formed on the outer periphery, and a transport table is provided rotatably, and a feeder. And a conveyance table, and a separation supply section having a supply path for supplying the works from the feeder into the storage section of the conveyance table one by one, and the separation supply section supplies to the storage section of the conveyance table. An air suction port for sucking the work in the path is provided, and the supply path of the separation and supply unit is formed by a pair of wall surfaces. The automatic work supply device is characterized in that an air injection port for pressing against the wall surface of is provided.

According to the present invention, the work is supplied from the feeder to the supply path of the separation supply unit. The work in the supply path of the separation supply unit is sucked by the air suction port and sent into the storage unit of the transport table. In this case, the subsequent work in the supply unit is pressed against the other wall surface by the air from the air ejection port provided on the one wall surface and stops.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 are views showing an embodiment of an automatic feeder for chip parts according to the present invention.

As shown in FIG. 4, an automatic work feeding device.
10 is a plurality of chip parts (work) W, W₁, W_Two, W
_ThreeA feeder that continuously conveys ... Adjacent to each other
11 and work W, W₁, W_Two, W_ThreeStorage to store ...
The portion 13a is formed on the outer periphery and is rotatably arranged.
With a circular transport table 13
Between the feeder table 11 and the transport table 13 from the feeder 11.
Ku W, W₁, W_Two, W _ThreeTransport while separating one by one
Separation and supply unit 1 for supplying into the storage unit 13a of the table 13
2 is provided, and this separation and supply unit 12 conveys with the feeder 1.
It is arranged independently of the table 13, and the work
W, W₁, W_Two, W_ThreeIt has a supply path 20 for ...

A storage section 13 is provided on the outer periphery of the transport table 13.
The measuring unit (not shown), the polarity reversing unit (not shown), the appearance detecting unit (not shown) and the discharging unit (not shown) for the works W, W ₁ , W ₂ , W ₃ ... It is provided.

Further, the works W, W ₁ , W ₂ , W _3, ... In the storage portion 13a of the transport table 13 are inserted into the embossed portion 15a of the carrier tape 15 by the insertion portion 16.

Next, FIG. 1 (a) (b) to FIG. 3 (a)
The separation and supply unit 12 will be described in detail with reference to (b). 1 (a) and 2 (a) are plan views of the automatic workpiece feeding device, and FIGS. 1 (b) and 2 (b) are respectively FIG.
It is a side view of (a) and FIG. 2 (a). See also FIG.
(A) (b) is a top view of the automatic workpiece feeder.

As shown in FIGS. 1A and 1B to FIGS. 3A and 3B, the supply path 11a of the feeder 11 is covered with an upper cover 27. The supply path 20 of the separation supply unit 12 is formed by a pair of side wall surfaces 21a and 21b. Further, the supply path 20 of the separating / supplying section 12 and the storage section 13a of the transport table 13 are covered with an upper cover 28 in which a sapphire glass 28a is fitted.

A pair of side wall surfaces 2 forming the supply passage 20.
1a, 21b, one side wall surface 21a workpiece W,
_{W 1, W 2, W 3} ... air injection ports 22a for pressing the to the other side wall surface 21b is provided. The other side wall surface 2
1b has an air outlet 22 facing the air outlet 22a.
b is provided. The air injection port 22a is connected to the air supply unit 35.

Further, the air injection port 22a and the air discharge port 22b
Is provided in the supply path 20 at a position separated from the end on the side of the transport table 13 by the length of one work W (see FIGS. 3A and 3B).

Further, FIGS. 1 (a), (b) to 3 (a)
As shown in (b), a light projecting unit 25 is provided on the bottom surface of the supply path 20 of the separating and supplying unit 12 near the transport table 13, and an optical sensor 26 is provided on the upper cover 28 facing the light projecting unit 25. It is provided.

Furthermore, a suction port 30 for sucking air is provided in each storage portion 13a of the transport table 13.

Next, the operation of this embodiment having such a configuration will be described with reference to FIG.

First, as shown in FIG. 2, a plurality of works W, W ₁ , W ₂ , W ₃ are passed through the supply path 11a of the feeder 11.
Are continuously conveyed in a state of being adjacent to each other, and the supply path 1
The works W, W ₁ , W ₂ , W ₃ ... Of 1a are sequentially sent into the supply path 20 of the separation supply unit 12. In this case, the work W, W ₁ , W ₂ , W ₃ ... 1.0 mm × 0.5 m
A rectangular parallelepiped chip component of m × 1.0 mm is used.

In FIG. 2, the supply path 2 of the separation supply unit 12
In 0, the leading work W is sucked into the storage portion 13a of the transport table 13, and the succeeding work W ₁ is fed to the supply path 20.
Stop within.

That is, the first work W in the supply path 20
Is drawn into the storage portion 13a by the air sucked by the suction port 30 provided in the storage portion 13a, and is stored in the storage portion 13a of the transport table 13.

At this time, the work W shields the light projected from the light projecting section 25 to the optical sensor 26, and the control section 40 turns on the air supply section 35 based on the signal from the optical sensor 26. The air from the air injection port 22a provided on one side wall surface 21a is injected by, next workpiece W ₁ of the workpiece W is pressed by the air from the air injection port 22a to the other side wall surface 21b.

In this way, the work W ₁ is attached to the other side wall surface 2
By stopping the pressing to 1b, only the leading work W can be sent into the storage portion 13a of the transport table 13 by the air sucked by the suction port 30.

Air is jetted from the air jet port 22a.
Most of the air is discharged from the air outlet 22b.
The air flowing from the air injection port 22a to the air discharge port 22b.
It is possible to form a mousse air flow in the supply passage 20.
Wear. Therefore, the work W₁To press the air against
It can be performed stably. Also, part of the air is the work W
₁Between the feeder 11 and the separation and supply unit 12
Released from the outside. Work W₁The air passing through the side of
Work W₁Next work W_TwoPush back to feeder 11 side
And this makes the work W₁And work W_TwoIs separated
It At the same time, the air from the air injection port 22a is
Securely push the W into the storage portion 13a of the transport table 13.
Mu.

That is, each storage portion 13a is provided with a suction port 30 for sucking air, but by pushing the work W into the storage portion 13a by the air from the air injection port 22a, the air from the suction port 30 is drawn. Even if the suction force of the workpiece W varies, the work W can be reliably stored in the storage portion 13a by the air from the air ejection port 22a.

After that, the first work W is completely stored in the storage unit 13.
When housed in a, the light projected from the light projecting unit 25 to the optical sensor 26 is transmitted, and the transport table 13 is rotationally driven by one pitch by the control unit 40 and the state of FIG. Return to.

Next, the control unit 40 turns off the air supply unit 35.
And, the workpiece W which next workpiece _{W 2} of the workpiece _{W 1} is followed
_The work W ₁ that has been pushed by ₃ and supplied into the supply path 20 of the separation supply section 12 and stopped at the same time in the supply path 20 is stored in the storage section 13a by the air suction force of the suction port 30 of the next storage section 13a. Sent to the side. in this case,
As described above, the work W ₁ and the feeder 11 in the supply path 20
Since the work W ₂ therein is separated in advance, the work W ₁
Only the work piece W ₂ can be reliably sent into the storage portion 13 a, and the next work W ₂ is pressed against the other side wall surface 21 b of the supply path 20 by the air from the air ejection port 22 a and stopped.

In this way, the work in the feeder 11 is
W, W₁, W_Two, W_ThreeBe sure to separate one by one ...
Sending waste into the storage part 13a of the transport table 13
You can The shape described above (1.0 mm x 0.5 mm
X 1.0 mm) work W, W ₁, W_Two, W_ThreeUsing
In the case of each, the time for sending the work piece to the storage section 13a one by one
Can be set to, for example, 23 to 40 ms.
Supply rate of 1200 pieces / minute to 1800 pieces / minute
You can

Further, the work of separating the work in the supply passage 20 of the separation and supply unit 12 is performed from the upper side from the sapphire glass
It can be visually confirmed through 8a.

Next, referring to FIGS. 3A and 3B, two works W and W ₁ are arranged in the supply path 20 of the separation supply unit 12, and these two works W and W ₁ are stored in the transport table 13. A state in which the suction is performed by the suction port 30 in the portion 13a will be described.

As shown in FIGS. 3 (a) and 3 (b), the two works W and W ₁ are sucked by the suction port 30 and are stored in the storage section 13.
When the light is sent to the side a, the light projected from the light projecting unit 25 to the optical sensor 26 is blocked (FIG. 3A). Next, the air supply unit 35 is turned on and air is ejected from the air ejection port 22a.

In this case, the air injection port 22a is provided in the supply path 20 of the separation supply unit 12 at a position separated from the end on the side of the transport table 13 by the length of one work W. Work W through which the air from the outlet 22a passes
The rear of ₁ can be a negative pressure. Since the work W ₁ can be slightly returned to the feeder 11 side by the negative pressure formed in this way, the work W sent to the storage portion 13a and the work W ₁ in the subsequent supply path 20 can be reliably performed. It can be separated (FIG. 3 (b)).

[0038]

As described above, according to the present invention, the work in the supply path of the separating and supplying section is sucked by the air suction port and sent into the storage section of the transport table, and the following work in the supply path is supplied. The air can be pressed against the other wall surface of the supply path and stopped by the air from the air ejection port provided on the one wall surface of the path. As a result, the works sent from the feeder can be reliably separated one by one and supplied into the storage section of the transport table. Further, since the needle, the pad, and the separation pin provided in the conventional automatic supply device are not required, and the work can be separated and supplied only by operating the air ejection port, the work separation mechanism can be simplified. it can.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of an automatic workpiece supply apparatus according to the present invention.

FIG. 2 is a view showing the operation of the automatic work feeding device according to the present invention.

FIG. 3 is a diagram showing a state where two works are sucked into a storage section of a transport table.

FIG. 4 is an overall schematic view of an automatic workpiece supply device according to the present invention.

FIG. 5 is a diagram showing a conventional automatic supply device.

FIG. 6 is a view showing a conventional automatic supply device.

[Explanation of symbols]

10 Work Automatic Supply Device 11 Feeder 11a, 20 Supply Path 12 Separation Supply Section 13 Conveying Table 13a Storage Sections 21a, 21b Pair of Side Wall Surfaces 22a Air Jet 22b Air Exhaust 25 Light Projection 26 Optical Sensor 30 Suction W W ₁ , W ₂ , W ₃ work

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B65G 47/78 B65G 47/84-47/86

Claims (4)

(57) [Claims] 1. A feeder for continuously transporting a plurality of works, and a storage section for storing the works are formed on the outer periphery,
A rotatable feed table; and a separation / feed unit provided between the feeder and the feed table and having a feed path for feeding the workpieces from the feeder one by one into the storage section of the feed table. An air suction port for sucking the work in the supply path of the separation supply section is provided in the storage section of the transfer table, the supply path of the separation supply section is formed by a pair of wall surfaces, and one wall surface sucks into the storage section of the transfer table. An air injection port that presses the succeeding work of the selected work against the other wall surface by air is provided, and an air discharge port is provided on the other wall surface of the supply path of the separation and supply unit, facing the air injection port of the one wall surface. An automatic work supply device. 2. The air injection port is provided at a position in the supply path of the separation supply unit, which is separated from the end on the side of the transport table by the length of one workpiece. Automatic work feeder. 3. The air from the air injection port passes through the side of the work pressed against the other wall surface and is discharged outward from between the feeder and the separating and supplying section, whereby the air is pressed against the other wall surface. The automatic work-feeding device according to claim 1 or 2, wherein the work subsequent to the work is returned to the feeder side. 4. A sensor for detecting passage of a work is provided in the vicinity of a transport table in a supply path of a separation and supply section, and an air injection port is turned on and off by a signal from the sensor. Item 4. The workpiece automatic supply device according to any one of items 1 to 3.