JPH09298389A - Device for conveying electronic components - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for conveying electronic components capable being adequate clamping by suction of components on the rotary conveying plate. SOLUTION: A main suction path 1c is formed in the center of a rotary shaft 1b of a rotary coveying plate 1, a sub-suction path 1d extending from the main suction path 1c to a base of each recess 1a is formed in the conveying plate, a suction path 2b communicating with the main suction path 1c of the rotary conveying plate 1 when the shaft 1b is directly coupled is formed through the center of a motor shaft 2a of a motor 2, one end of the opening of the suction path 2b is used as a suction opening, therefore conventional control of the clearance between the supporting plate and the rotary coveying plate is unnecessary, and labor work required for the clearance control can be eliminated. As normally opened clearance, conventionally existing, is not in the suction path, the problem of suction force deterioration caused by an open air entering and stuffed path caused by dust and clay is solved, and stable suction force required for components clamping is provided to each recess area 1a. Moreover, the elimination of the supporting plate conventionally used on the back side of rotary conveying plate make it possible to use the back side space effectively and to arrange several inspection device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component carrying device for carrying a chip-shaped electronic component by sucking and holding it on a holding portion of a rotary carrying plate.

[0002]

2. Description of the Related Art A conventional conveying device of this type will be described below with reference to FIGS. 4 is a partially cutaway side view of the transfer device, FIG. 5A is a side view of the rotary transfer plate, and FIG.
(B) is a front view of the rotary transport plate, in which 11 is a rotary transport plate, 12 is a support plate, and 13 is a motor.

The rotary transfer plate 11 is in the form of a disk having a predetermined thickness and diameter, and has a plurality of recesses 11a capable of suction-holding a chip-shaped electronic component P (hereinafter simply referred to as component P) to be transferred in a predetermined direction. The rotating shaft 11b having
At the center of its back surface. In addition, the rotary transport plate 11
Inside the inside, there is an annular main suction passage 11c with an open rear side.
And a radial auxiliary suction passage 11d extending from the main suction passage 11c to the bottom surface of each recess 11a.

The support plate 12 has a support hole 12a for rotatably supporting the rotary shaft 11b. In the rotary shaft supported state, a fine gap is formed between the front surface of the support plate 12 and the rear surface of the rotary transfer plate 11. Are facing through. Further, inside the support plate 12, an annular suction passage 12b having the same shape as the main suction passage 11c opened on the front side is formed, and a suction port 12c communicating with the suction passage 12b is formed on the back surface thereof. ing.

The motor 13 is a stepping motor, and one end of a motor shaft 13a thereof is directly coaxially connected to the rotary shaft 11b of the rotary transport plate 11.

This transfer device is used when performing various inspections such as an electrical characteristic inspection and a visual inspection on the part P, and the suction port 12c of the support plate 12 is used as a vacuum source (not shown) such as an air compressor. , And the vacuum source is operated, the motor 13 intermittently rotates the rotary transport plate 11 at predetermined angles to carry out the intended component transport.

The suction force of the vacuum source is generated by the suction passage 12b of the support plate 12, the fine gap, and the main suction passage 1 of the rotary transfer plate 11.
It acts on the bottom surface of each recess 1a through 1c and the sub-suction passage 11d, so that the components can be sucked in each recess 1a.

The rotary transport plate 11 stopped at a predetermined supply position
The component P to be conveyed is supplied in a predetermined direction from a component feeder such as a ball feeder or a linear feeder to the concave portion 11a of the concave portion 11a at the stop timing.
It is adsorbed and held by the suction force generated on the bottom surface. The components P sequentially sucked and held in the concave portions 11a of the rotary transport plate 11 are transported by the rotary transport plate 11 that rotates intermittently in a predetermined circular locus with the supply position as a base point.

[0009]

In the above-described conventional conveying device, the rotating conveying plate 11 can be rotated between the rear surface of the rotating conveying plate 11 and the front surface of the supporting plate 12 without any trouble, and the parts in the rotating conveying plate 11 can be rotated. It is necessary to form a fine gap so that the adsorption and holding of the can be accurately performed. That is, the rotary transport plate 1
It is necessary to secure a flat surface on the back surface of 1 and the front surface of the support plate 12, and to face both surfaces in parallel with each other with a space as small as possible.

However, in the current processing accuracy and assembly accuracy, there is a limit to making the above gap interval smaller than 100 μm, and in order to maintain this gap interval, it is troublesome to perform regular adjustment and maintenance.

Further, even if the gap interval is made smaller than this, it is difficult to completely prevent the outside air from entering the suction passage through the gap interval. This invasion of the outside air reduces the suction force, and at the same time, the amount of the outside air is reduced. There is a possibility that dust that has entered the space may cause clogging or blockage of the suction passage, resulting in a reduction or variation in suction force.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an electronic component carrying device capable of properly sucking and holding a component on a rotary carrying plate.

[0013]

In order to achieve the above object, the present invention is directed to a rotary transport plate having a plurality of holding portions on its peripheral surface capable of sucking and holding chip-shaped electronic components, and rotation of the rotary transport plate. In an electronic component carrying device including a carrying plate rotation motor in which a motor shaft is directly connected to a shaft, a main suction passage is formed in a central portion of a rotating shaft of the rotary carrying plate, and the main suction passage is provided to each holding portion. A sub suction passage extending is formed inside the conveying plate, a suction passage communicating with the main suction passage of the rotating conveying plate is formed in the central portion of the motor shaft of the motor when the shaft is directly connected, and a suction port communicating with the suction passage is formed in the motor. The main feature is that it is formed on the shaft.

According to the electronic component carrier of the present invention,
Since the main suction passage is formed in the center of the rotary shaft of the rotary transport plate and the suction passage is formed in the center of the motor shaft of the motor and communicates with the main suction passage when the shaft is directly connected, the conventional support plate and rotation It is possible to eliminate the need for gap management with the transport plate and prevent outside air from entering the suction passage system.

[0015]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a partially cutaway side view of a transfer device, FIG. 2A is a side view of a rotary transfer plate, and FIG. 2B is a front view of the rotary transfer plate. Is a motor, 3 is a packing, and 4 is a connector.

The rotary transport plate 1 is in the form of a disc having a predetermined thickness and diameter, and the prismatic or columnar chip-shaped electronic component P (hereinafter simply referred to as component P) to be transported is oriented with the component P oriented in a predetermined direction. (12 in the drawing) recesses 1a that can be sucked and held by
On the peripheral surface at equal angular intervals, and the rotary shaft 1b at the center of the back surface. A main suction passage 1c having a circular cross section is formed at the center of the rotary shaft of the rotary carrier plate 1 from the shaft end to the inside of the carrier plate. Radial sub-suction passages 1d extending to the bottom surface of each recess 1a are formed. Further, a connecting flange 1e is provided on the outer periphery of the end of the rotary shaft 1b of the rotary transport plate 1.

The motor 2 is composed of a double shaft type stepping motor, and a suction passage 2b having the same sectional shape as the main suction passage 1a of the rotary conveyance plate 1 is formed through the central portion of the motor shaft 2a. One end opening (left end opening in the drawing) of the suction passage 2b is used as a connection opening with the main suction passage 1c, and the other end opening (right end opening in the drawing) is the suction opening 2c.
Used as A coupling flange 2d corresponding to the flange 1e is provided on the outer circumference of the end of the motor shaft 2a. The motor shaft 2a of the motor 2 and the rotary shaft 1b of the rotary conveyance plate 1 are coaxially directly connected to each other by connecting the flanges 3 of the two with bolts or the like via a packing 3, whereby the suction passage 2b is formed. And the main suction passage 1c are airtightly connected and communicate with each other.

The connector 4 has a bottomed cylindrical shape with one end open,
The inner hole 4a having a circular cross section is provided with a bearing 4b that rotatably supports the non-connection end of the motor shaft 2a, and a seal member 4c that rotatably holds the same in an airtight state. Also,
The connector 4 is provided with a connection port 4d to which a tube from a vacuum source (not shown) such as a vacuum pump is connected.

The above-mentioned transport device is provided with the connection port 4d of the connector 4.
Is connected to a vacuum source via a tube, and the vacuum source is operated, the motor 2 intermittently rotates the rotary transport plate 1 at a predetermined angle, whereby desired component transport is performed.

A main suction passage 1c is formed in the central portion of the rotary shaft 1b of the rotary conveying plate 1, and a suction passage 2c is formed in the central portion of the motor shaft 2a of the motor 2 so as to communicate with the main suction passage 1c when the shaft is directly connected. Therefore, the suction force of the vacuum source directly acts on the bottom surface of each recess 1a through the suction passage 2b of the motor 2, the main suction passage 1c and the sub-suction passage 1d of the rotary transport plate 1, and thereby each recess is formed. It is possible to pick up the component at 1a.

At the stop timing, the component P to be transported is supplied in a predetermined direction from the component feeder such as a ball feeder or a linear feeder to the recess 1a of the rotary transport plate 1 stopped at a predetermined supply position. The component P is suction-held by the suction force generated on the bottom surface of the recess 1a. The components P sequentially sucked and held in the concave portions 1a of the rotary transport plate 1 are transported by the rotary transport plate 1 that rotates intermittently in a predetermined circular locus with the supply position as a base point.

Various inspections such as an electrical characteristic inspection and a visual inspection for the parts are carried out when the part P in the middle of conveyance is stopped at a predetermined inspection position due to intermittent rotation of the rotary conveyance plate 1. As a result of the inspection, the component P determined to be a non-defective product is pushed out from the concave portion 1a of the rotary transport plate 1 by a solenoid-driven or cylinder-driven ejection pusher when stopped at a predetermined ejection position different from the inspection position. On the other hand, the parts that are judged to be defective are
When stopped at a predetermined discharge position different from the inspection position,
It is pushed out from the concave portion 1a of the component conveying plate 1 by a solenoid-driven or cylinder-driven ejection pusher and dropped into a defective product container.

As described above, in the above-described electronic component carrier, the conventional gap management between the support plate and the rotary transport plate is not necessary, and the work load required for the gap management can be eliminated.

Further, since the suction passage system does not have the normally open gap as in the prior art, the problems of a decrease in suction force due to the invasion of outside air and the problems of clogging or clogging of the passage due to dust are eliminated, and each recess 1a has a component. The suction force required for adsorption can be stably exhibited.

Further, since the conventional supporting plate can be eliminated from the rear side of the rotary conveying plate 1, various inspection devices can be easily arranged by effectively utilizing the space on the rear side.

In the above-described embodiment, the rotary transport plate is one in which the components are suction-held in the peripheral surface concave portion, but
The present invention can be applied even to a rotary transport plate having a holding portion of another shape.

Although the suction passage is formed through the central portion of the motor shaft as an example, as shown in FIG. 3, the suction passage 2b 'is set to the middle of the central portion of the motor shaft 2a. The suction port 2c 'leading to the motor shaft 2a
Is formed so as to be orthogonal to the axis of the
A cylindrical connector 5 having a pair of bearings 5b and a sealing material 5c is provided in the suction port forming portion of the motor shaft 2a, and a tube from a vacuum source is connected to a connection port 5d provided in the middle of the connector 5a. Even if it does, the same operation and effect as the above-mentioned embodiment can be obtained.

[0028]

As described in detail above, according to the present invention,
It is not necessary to manage the gap between the support plate and the rotary conveyance plate as in the conventional case, and the work load required for the gap management can be eliminated. In addition, since there is no normally open gap in the suction passage system as in the past, the problem of reduced suction force due to invasion of outside air and passage clogging or blockage due to dust are eliminated, and it is necessary for component adsorption to each holding part. The stable suction force can be exerted. Further, since the conventional supporting plate can be eliminated from the back side of the rotary transport plate, various inspection devices can be easily arranged by effectively utilizing the space on the back side.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a carrying device showing an embodiment of the present invention.

FIG. 2 is a side view and a front view of the rotary transport plate shown in FIG.

FIG. 3 is a partial cross-sectional view showing another embodiment of the present invention.

FIG. 4 is a partially cutaway side view of a conventional conveying device.

5 is a side view and a front view of the rotary transport plate shown in FIG.

[Explanation of symbols]

P ... Parts, 1 ... Rotating transport plate, 1a ... Recess, 1b ... Rotating shaft, 1c ... Main suction passage, 1d ... Sub suction passage, 2 ... Motor, 2a ... Motor shaft, 2b, 2b '... Suction passage, 2c,
2c '... Suction port, 3 ... Packing, 4, 5 ... Connector.

Claims (2)

[Claims] 1. A rotary transport plate having a plurality of holding portions on its peripheral surface capable of sucking and holding chip-shaped electronic components, and a transport plate rotation motor in which a motor shaft is directly connected to a rotary shaft of the rotary transport plate. In the electronic component transporting device, a main suction passage is formed in a central portion of the rotation shaft of the rotary transport plate, and a sub suction passage extending from the main suction passage to each holding portion is formed inside the transport plate. A suction passage communicating with the main suction passage of the rotary conveying plate is formed in the central portion of the motor shaft when the shaft is directly connected, and a suction port communicating with the suction passage is formed in the motor shaft. 2. A double-shaft type motor for rotating the conveying plate is used to form a suction passage through the central portion of the motor shaft, and one end opening of the suction passage is used as a suction port. The electronic component carrying device according to claim 1.