JPH0741986B2 - Automatic chip feeder - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chip-shaped workpiece automatic supply device for supplying a workpiece such as a chip-shaped electronic component to a supply target portion such as a storage groove of a disk.

2. Description of the Related Art Heretofore, as a chip-shaped workpiece supply device of this type, there have been known configurations such as those described in JP-A-64-38320 and JP-A-1-109016.

An outline of this conventional tip-shaped workpiece supply device will be described. When the tip-shaped workpieces are continuously supplied to the linear supply path, the leading tip-shaped workpieces are restricted in movement by the first stopper, When the storage groove of the disk faces the circular workpiece, the second chip workpiece is restricted in movement by advancing the second stopper, and the leading chip workpiece is released by retracting the first stopper. The released chip-shaped work is supplied to the storage groove by jetting air or suctioning by a vacuum device. After the supply, the first stopper is moved forward, the second stopper is moved backward, the second chip-shaped work is released and moved forward, and the movement is restricted by the first stopper. Hereinafter, by repeating the above operation, the chip-shaped workpieces can be sequentially supplied to the storage groove of the disk. Then, for example, when the chip-shaped work that was broken in the previous step is supplied into the supply path, both the divided piece and the front side of the next chip-shaped work are inserted into the storage groove of the disk, and The sides are left in the feed channel. That is, the chip-like work next to the divided piece is in a state of straddling the storage groove of the disk and the supply path. When the disc is rotated in this state, the chip-shaped work extending over the storage groove and the supply passage may be destroyed, and the disc or the supply passage may be damaged. Such a supply trouble occurs not only when the chip-shaped work is cracked but also when the size or shape is defective. Therefore, in order to avoid such a supply trouble, the sensor detects the supply state of the chip-shaped workpiece,
The rotation of the disk has stopped.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the above-mentioned conventional chip-shaped work supply device, the supply trouble that occurs in the connection portion between the supply path and the storage groove of the disc is detected by the sensor, so that the rotation of the disc is stopped. This makes it possible to prevent damage to the disc, the supply path, etc. However, for defective chip-shaped workpieces that have caused supply problems, the device must be stopped, the supply path, etc. must be disassembled and discharged manually by tweezers, etc.
Not only is the task tedious, but it is also inefficient.

The present invention is to solve the problems of the conventional examples as described above, such as the divided pieces and the shape of the chip-like work that is the cause of the supply trouble that has occurred in the connection portion between the supply path and the supplied portion. An object of the present invention is to provide an automatic chip-shaped work supply device capable of automatically ejecting defective chip-shaped works and the like and improving work efficiency.

Means for Solving the Problems Technical means of the present invention for achieving the above object are
A supply path for linearly and continuously supplying the chip-shaped work to the supply target portion, and a connection portion between the supply path and the supply target portion, and a position for relaying the supply path to the supply target portion and A discharge gate provided so as to be able to move forward and backward at a position where the supply path is cut with respect to the supply target portion, a drive device for moving the discharge gate forward and backward, and one end of the discharge gate provided at the supply target portion side. A vacuum device that is open to the upper part and communicates with the supply target portion, and a suction path for sucking the chip-shaped workpiece in the supply path toward the supply target portion, and a vacuum device that communicates with the other end of the suction path. And the chip-like work that is passed through the discharge gate and supplied to the supply target portion can be detected, and when it is detected that the chip-like work remains on the discharge gate, the drive is performed. The above-mentioned discharge gate by the device It is obtained by a detecting means for retracting.

Operation Therefore, according to the present invention, the chip-shaped workpieces that are continuously supplied in the supply path in a straight line are sequentially supplied to the supply target portion by being sucked from the suction path by driving the vacuum device. When a supply trouble occurs at the connecting portion between the supply path and the supplied portion, the detecting means detects the chip-like work remaining on the connecting portion, that is, the discharging gate, and the driving device retracts the discharging gate. To connect the supply trouble occurrence part to the suction path, and forcibly suck and discharge the chipped work pieces, etc., which are the cause of the supply trouble and have a bad shape such as chipped work pieces into the suction path. it can.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 to 3 show an automatic feeder for chip-shaped workpieces according to an embodiment of the present invention, and FIG. 1A is a state before the chip-shaped workpieces are fed, taken along the line IA-IA in FIG. 1B. A plan view, FIG. 1B is a cross-sectional view taken along the line IB-IB, and FIG. 2A is a plan view similar to FIG.
FIG. 2B is a sectional view similar to FIG. 1B, and FIG. 3 is a sectional view similar to FIG. 1B in a supply trouble resolved state.

As shown in FIGS. 1 to 3, a guide plate 2 is provided on the base 1.
Is provided. A disk 3 having a vertical rotation axis is rotatably supported on the guide plate 2 in close proximity thereto. The disk 3 is formed with a large number of storage grooves 4 that are supply target portions at equal intervals on the outer circumference, and is intermittently rotated by a drive device (not shown).
On the other side of the guide plate 2, there is formed a linear supply path 5 for sequentially supplying the chip-shaped resistors R, which are chip-shaped works, to the respective storage grooves 4 of the disk 3. That is, the side guide plates 6, 7 are provided on the guide plate 2, and the side guide plates 6,
An upper surface guide plate 8 is provided so as to extend over 7 and a supply path 5 is formed by being surrounded by the guide plate 2, the side surface guide plates 6 and 7, and the upper surface guide plate 8. Chip resistors R are continuously supplied to the supply path 5 by a feeder (not shown). The side guide plates 6 and 7 have guide surfaces formed along the outer peripheral surface of the disk 3. Holes 9 and 10 are formed in the guide plate 2 and the base 1 at a connecting portion between the supply path 5 and the storage groove 4, and a discharge gate 11 is provided in the holes 9 and 10 so as to be able to move forward and backward. Then, it is moved forward and backward by a drive device (not shown), and relays the supply path 5 to the storage groove 4 at the forward position (see FIGS. 1B and 2B), and the supply path 5 at the retracted position. Can be cut against (see FIG. 3).
A suction path 12 is provided in the base 1 on the side of the disk 3. One end of the suction passage 12 is formed along the lower surface of the guide plate 2 and is opened to the upper portion of the discharge gate 11, and
A hole 13 formed continuously with the hole 9 in the guide plate 2 communicates with the inner side of the storage groove 4. Therefore,
When the discharge gate 11 is retracted as described above, one end of the suction passage 12 is widely opened to the supply passage 5 by the holes 9 and 13. The other end of the suction passage 12 is connected to a vacuum pump (not shown).

The upper guide plate 8 is provided with a first stopper 14 located at the tip of the supply path 5. The first stopper 14 is composed of a large diameter portion and a small diameter portion, and is slidably inserted into a large diameter hole 15 and a small diameter hole 16 which are formed so that the large diameter portion and the small diameter portion communicate with the upper surface guide plate 8. ing. A compression spring 17 is interposed between the large diameter portion of the first stopper 14 and the inner end surface of the large diameter hole 15.
The elasticity of 17 presses the first stopper 14 rearward, and the tip of the first stopper 14 is retracted from the supply passage 5 into the small diameter hole 16. Then, when the first stopper 14 is pressed against the elasticity of the compression spring 17 by the driving device (not shown), the first stopper 14 moves forward, the tip projects into the supply path 5, and the leading tip resistor R is moved forward. Can be regulated. A second stopper 18 is provided on the base 1. The second stopper 18 is the first stopper 14
Is arranged so that the forward movement of the chip-shaped resistor R located at the second position can be regulated in a state where the forward movement of the chip-shaped resistor R at the top is regulated, and has a buffering function. That is, the second stopper 18 is formed on the piston, and is supported by the cylinder 19 so as to be able to move forward and backward with the tip end protruding, and the base end of the second stopper 18 and the cylinder 19 are supported.
A shock absorbing spring (20) is interposed between the lower end and the inner surface of the lower end. The cylinder 19 is inserted into a hole 21 formed in the substrate 1, and the tip of the second stopper 18 is inserted into a hole 22 formed in the guide plate 2. A compression spring 23 is interposed between the large-diameter stepped portion of the base of the cylinder 19 and the lower surface of the guide plate 2, and the elasticity of the compression spring 23 presses the cylinder 19 and the second stopper 18 rearward, The tip of the second stopper 18 is retracted from the supply path 5 into the hole 22. And the cylinder
When the drive device (not shown) presses the first stopper 19 and the second stopper 18 against the elasticity of the compression spring 23, the second stopper 18 moves forward,
The tip of the stopper 18 protrudes into the supply path 5 and presses the second chip-shaped resistor R against the upper guide plate 8 to restrict the forward movement. At this time, the shock absorbing spring 20
Therefore, damage to the chip resistor R can be prevented.

A small diameter hole 24 is formed at the tip of the discharge gate 11,
A large-diameter hole 25 is formed so as to communicate with the rear side, one side of the fiber sensor 26 is inserted and fixed in the large-diameter hole 25, and the other side of the fiber sensor 26 is opposed to a projecting and receiving device (not shown). There is. Then, from the projector to the fiber sensor 26 and the small diameter hole 25.
When the chip-shaped resistor R is present on the discharge guide 11 by projecting light through, the reflected light can be detected by the light receiver through the fiber sensor 26. By continuing this detection state, the drive device of the ejection guide 11 is driven, the ejection guide 11 can be retracted, and the disc 3 can be intermittently rotated when it is not detected.

The operation of the above configuration will be described below with reference to the timing chart shown in FIG.

First, as shown in FIGS. 1A and 1B, the disc 3 is stopped in a state in which the storage groove 4 of the disc 3 faces the supply path 5 and is stopped.
The stopper 14 is moved downward and the second stopper 18 is moved backward. In this state, the chip-shaped resistor R is linearly and continuously supplied into the supply path 5 by the feeder, and the leading chip-shaped resistor R is brought into contact with the first stopper 14 to regulate the position. Then, suction is started from the suction passage 12 by driving the vacuum pump, and as shown in FIGS. 2A and 2B, the second stopper 18 is advanced upward to move the second chip resistor R.
Is regulated and the first stopper 14 is retracted upward to release the regulation of the position of the leading chip resistor R.
Along with this, the chip-shaped resistor R at the front passes through the discharge gate 11 by the suction force from the suction path 12 and is supplied to the storage groove 4 of the disk 3. During this time, when the supply state of the chip resistor R is detected through the fiber sensor 26 and supplied to the storage groove 4 in a normal state, the discharge gate 11 remains closed at the forward position. Next, the first stopper 14 is advanced downward, the second stopper 18 is retracted downward, and the second chip resistor R is released. Along with this, the second chip-shaped resistor R and the like are sequentially advanced by the pressing force of the succeeding chip-shaped resistor R and the suction force from the suction path 12, and come into contact with the first stopper 14 to be regulated in position. . In parallel with this, or after the above position regulation, the disk 3 is intermittently rotated, the next storage groove 4 is opposed to the supply path 5, and the chip-shaped resistor R in the previous storage groove 4 is guided from the discharge gate 11 to the guide plate. Supported on two.
Hereinafter, the above operation is repeated to insert the chip-shaped resistor R into the storage groove 4
And can be transferred for processing, inspection, etc.

The above is the description of the operation when the chip resistor R is normal. Next, the operation when a supply trouble occurs at the connection between the supply path 5 and the storage groove 4 will be described.

FIG. 4 is a partially enlarged plan view showing an example of supply trouble in the case where the split pieces of the chip-shaped resistor R cracked in the previous step are mixed, and FIG. 5 shows a chip-shaped resistor R having a defective shape or the like. It is a partially enlarged plan view showing an example of a supply trouble in the case of being mixed.

As shown in FIG. 4, when the split piece r of the chip resistor R is mixed, the split piece r is supplied to the storage groove 4 of the disk 3 by the suction force from the suction path 12 as described above. At the same time, since the chip resistor R on the rear side is also released from the second stopper 18, a part of the front side thereof is inserted into the storage groove 4,
A part of the rear side does not completely fit into the storage groove 4 and remains on the discharge gate 11. Since the chip resistor R on the rear side detects that the chip resistor R remains on the discharge gate 11 through the fiber sensor 26, the driving device is driven to move the discharge gate 11 and the like downward as shown in FIG. Back, the hole 9 of the guide plate 2 is opened, and the suction passage 12 is also communicated with the hole 9 above the discharge gate 11, that is, the supply trouble occurrence portion. Accordingly, the divided piece r and the chip-shaped resistor R on the rear side can be forcibly sucked into the suction passage 12 and discharged. After the discharge, the discharge gate 11 and the like are advanced to the original position, and is made to stand by for the next supply work. When small fragments of the chip-shaped resistor R or relatively small foreign matters such as dust are mixed in the supply path 5, it is sucked into the suction path 12 from the hole 13 of the guide plate 2 at the bottom of the storage groove 4 and discharged. Therefore, it is possible to prevent the occurrence of a supply trouble.

Further, as shown in FIG. 5, a chip-shaped resistor R having a bad shape or the like is mixed and only a part of the front side of the resistor R is accommodated in the storage groove 4 of the disk 3.
Even when a part of the rear side is not completely inserted into the storage groove 4 and remains on the discharge gate 11, the chip-shaped resistor R is detected via the fiber sensor 26 in the same manner as above, and the discharge gate is detected. The chip-like resistor R causing the supply trouble can be forcibly sucked into the suction passage 12 and discharged by retracting 11 and the like downward.

In the above embodiment, the case where the storage grooves 4 are formed at equal intervals on the outer periphery of the disk 3 as the supply target portion has been described.
It can also be applied to the case of linear transfer. In addition to the above, the present invention makes various design changes within a range not departing from its basic technical idea.

EFFECTS OF THE INVENTION As described above, according to the present invention, chip-shaped workpieces that are linearly and continuously supplied to the supply path are sequentially supplied to the supply target part by being sucked from the suction path by driving the vacuum device. To be done. When a supply trouble occurs at the connecting portion between the supply path and the supplied portion, the detecting means detects the chip-like work remaining on the connecting portion, that is, the discharging gate, and the driving device retracts the discharging gate. The supply trouble occurrence part is made to communicate with the suction path, and the chipped work pieces that are the cause of the supply trouble and that have a bad shape such as chips are forcibly sucked into the suction path and automatically discharged. can do. Therefore, the work efficiency can be improved.

[Brief description of drawings]

1 to 5 show an automatic feeder for chip-shaped workpieces according to an embodiment of the present invention, and FIG. 1A is a state before the chip-shaped workpieces are fed, taken along the line IA-IA in FIG. 1B. A plan view, FIG. 1B is a cross-sectional view taken along the line IB-IB, and FIG. 2A is a plan view similar to FIG.
FIG. 2B is a sectional view similar to FIG. 1B, FIG. 3 is a sectional view similar to FIG. 1B in the state where the supply trouble is eliminated, and FIG. 4 is a division of the chip-shaped resistor broken in the previous step. FIG. 5 is a partially enlarged plan view showing an example of supply trouble when a piece is mixed, and FIG. 5 is a partially enlarged plan view showing an example of supply trouble when a chip-shaped resistor having a defective shape or the like is mixed. FIG. 6 is a timing chart for explaining the operation of the above embodiment. 2 ... Guide plate, 3 ... Disk, 4 ... Storage groove, 5 ... Supply path, 11 ... Discharge gate, 12 ... Suction path, 14 ... First stopper, 18 ... Second stopper , 26: Fiber sensor, R: Chip resistor (workpiece).

Claims (1)

[Claims] 1. A supply path for continuously and linearly supplying a chip-shaped work to a supply target part, and a connection part between the supply path and the supply target part, wherein the supply path is the supply target part. To the position to be relayed to and to the position where the supply path is cut off from the supply target portion, a discharge gate that can be moved forward and backward, a drive device that moves the discharge gate forward and backward, and a drive unit that is provided on the supply target portion side. Is opened to the upper part of the discharge gate and communicates with the supply target portion, and a suction path for suctioning the chip-shaped workpiece in the supply path to the supply target side and the other end of the suction path. It is possible to detect the chip-like work that is communicated with the vacuum device and passes through the discharge gate and is supplied to the supply target portion, and confirm that the chip-like work remains on the discharge gate. When detected, the above drive device Automatic feeder of the chip-shaped workpiece that includes a detection means for retracting the discharge gate.