JP3268696B2 - Parts 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 improvement in a component supply device for sucking a plurality of electronic components sequentially supplied from a bulk case to a suction nozzle of an electronic mounting machine.

[0002]

2. Description of the Related Art Conventionally, electronic components such as chip capacitors and resistors have been used for mounting on electronic component mounting machines in a taped state, as disclosed in Japanese Patent Application Laid-Open No. 4-199793. In the taping mounting method, improvement in mounting efficiency cannot be expected, and furthermore, it is not possible to reduce the amount of packaging material, reduce dust and paper dust, and the like. Therefore,
In recent years, a bulk mounting method capable of solving these problems has attracted attention as a next-generation mounting method.

Although not shown, a conventional bulk mounting type component supply apparatus mounts a bulk case containing a plurality of electronic components on a bulk cassette mounted on an electronic component mounter, and arranges the bulk cassette from the bulk case. A plurality of electronic components are sequentially delivered to the path in a vacuum suction state and delivered to the electronic component receiving position of the bulk cassette, and the escapement receives the electronic components at the electronic component receiving position,
The escapement is rotated by a predetermined angle to transfer the electronic component to the suction position of the bulk cassette. Thereafter, the electronic component is vacuum-sucked to the suction nozzle of the electronic component mounting machine at the suction position, and is mounted at a predetermined position on a printed board (not shown).

A conventional bulk mounting type component supply apparatus does not have a unique driving source, battery, and control circuit, and has no unique driving source, battery, or control circuit. And it is configured to operate only when a mechanical driving force is transmitted from the electronic component mounter. For example, the component supply device includes a drive lever (indicated by reference numeral 11 in FIG. 1).
When the electronic component mounter is hit at a predetermined timing and swings, the vacuum suction valve is opened to put the storage room and the feeding path into a vacuum suction state, and the escapement rotates intermittently. It is configured to receive and transport electronic components.

A prior art document of this kind is disclosed in
JP-A-3-127600, JP-A-1-96998, JP-A-3-214692, JP-A-3-175700, JP-A-3-187298, JP-A-3-291000 and the like.

[0006]

A conventional bulk mounting type component supply apparatus is configured as described above, and has a unique structure corresponding to the structure of an electronic component mounting machine. There was a problem that it could not be used for a component mounter and the compatibility was very poor. Furthermore, it is not equipped with any original drive source, battery, and control circuit, and it is configured to operate only when mechanical driving force is transmitted from the electronic component mounting machine. There have been problems such as uncertainty in the supply of electronic components due to vibration and timing coarseness due to transmission of force, and difficulty in high-speed supply. For example, taking the above-described component supply device as an example, the structure is such that the drive lever is hit by the electronic component mounter at a predetermined timing and swings, so that the vibration is constantly generated, and the electronic component is received by the escapement.
There was a major drawback in that errors occurred during transport.

Further, the conventional bulk mounting type component supply device simply rotates the escapement to transfer the electronic component to the suction position of the bulk cassette.
In many cases, electronic components are vacuum-sucked before the suction nozzle of the electronic component mounting machine descends to the suction position. For this reason, there has been a problem that the electronic component is vacuum-sucked in an abnormal posture, and as a result, a great trouble occurs in the subsequent mounting operation.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and can improve compatibility, and further provides uncertainty in supply of electronic components due to vibration, timing roughness, etc. due to transmission of driving force, and high speed. It is an object of the present invention to provide a component supply device that can solve problems such as difficulty in supply.

[0009]

According to the present invention, in order to achieve the above-mentioned object, a case for supplying a part mounted and stored in a main body to a regular feeding path of the main body and a case for supplying the parts to the regular feeding path. A transport unit that transports the component to the component receiving position of the main body, and a first unit that detects presence or absence of the component and operates the transport unit.
Detecting means, a transfer means for transferring a component received at the component receiving position to a suction position of the main body, a vertically movable suction means for lowering and sucking a component exposed at the suction position, and a descent of the suction means Detecting means for detecting the position, a concealing means for exposing the parts concealed based on the detection of the second detecting means to a state in which the parts can be sucked, and controlling the conveying means and the concealing means provided in the main body. Control means and power supply means provided in the main body for supplying power to the transport means and the concealing means are provided.

In the present invention, in order to achieve the above object, the concealing means is provided with a drive source provided inside the main body, and a substantially circular transfer means fitted on a rotating shaft of the drive source. And a notch that is cut out by the shutter to expose the component at the suction position. The cutout is concealed from the suction position by rotating a predetermined angle based on the elevation of the suction means. The notch is rotated to a predetermined angle based on the detection of the second detection means, and the notch is returned from the concealed position to the suction position.

[0011]

According to the present invention having the above-described structure, the main body is independently provided with the driving source, the power supply means, and the control means, so that it can be easily used for another type of electronic component mounting machine. , A significant improvement in compatibility can be expected. In addition, since the actuator operates without transmission of mechanical driving force from the electronic component mounting machine, vibrations due to transmission of driving force, uncertainty in component supply due to coarse timing, etc., and difficulty in high-speed supply, etc. Problems can be solved.

Further, the notch of the shutter returns from the concealing position to the suction position with the lowering of the suction means, and the component is exposed in a state where it can be sucked, so that the component is sucked before the suction means descends to the suction position. Can be reliably prevented.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to one embodiment shown in FIGS.

The component supply device according to the present invention provides an electronic component 1
From the bulk case 2 to the regular feeding path 33 of the bulk cassette 3,
And to the electronic component receiving position A via the conveyor 4,
The escapement 5 that has received the electronic component 1 at the electronic component receiving position A is rotated to transfer the electronic component 1 to the suction position B, and the shutter 6 is rotated to position the notch 6a at the suction position B. Thereafter, the electronic component 1 is vacuum-sucked to the suction nozzle of the electronic component mounting machine.

The electronic component (component) 1 is composed of, for example, a small chip capacitor, a resistor, and the like, and is randomly stored in a bulk case (case) 2 (for example, 15,000 chip capacitors of 1608 size). . As shown in FIG. 1, the bulk case 2 is formed in an elongated thin box shape from a transparent material, and a short side mounting surface thereof is closed by an openable and closable shutter (not shown). Is detachably mounted on the inclined mounting portion 31 of the bulk cassette 3 in a state where it is tilted and directed downward. A plurality of inclined guides (not shown) for facilitating the discharge of the plurality of electronic components 1 are provided near the mounting surface inside the bulk case 2.

The above-mentioned bulk cassette (main body) 3
As shown in the figure, a thin, elongated structure extending in the front-rear direction is provided.
The clamp lever 30 is mounted upright and detachably attached to an electronic component mounting machine (not shown) by swinging operation of the clamp lever 30. An inclined mounting portion 31 for supporting the bulk case 2 is placed near the front of the upper surface of the bulk cassette 3, and a plurality of discharged electronic components 1 are provided inside the inclined mounting portion 31.
And a storage chamber 32 for temporarily storing
From the lower front of the storage chamber 32, a narrow rectifying path 33 for arranging a plurality of electronic components 1 extends to an electronic component receiving position (component receiving position) A at the front end of the upper surface of the bulk cassette 3. A hopper 34 forming a part of the bottom surface of the storage chamber 32 is built in the inclined mounting portion 31, and the hopper 34 is intermittently driven by the rotation of the hopper pin wheel 45 of the conveyor 4. To stir the storage room 32 to prevent the plurality of electronic components 1 from stagnating in the storage room 32. Further, the inclined mounting portion 31 includes:
A plurality of lightweight holes 35 are provided for weight reduction. still,
As shown in FIGS. 3 and 5, an inclined falling surface 36 for dropping the electronic component 1, which has failed to be sucked by a suction nozzle (not shown), is provided at the forefront end of the upper surface of the bulk cassette 3. The suction nozzle constituting a part of the electronic component mounter is configured to be able to move up and down, and is waiting above the suction position B,
It has a function of vacuum-suctioning the electronic component 1 at the suction position B and mounting it at a predetermined position on a printed board (not shown).

On the other hand, as shown in FIG. 4, the conveyor 4 is composed of a small-sized belt conveyor, and a DC motor (drive source) 40 is driven based on detection of a first detector (first detection means) 44. The electronic component 1 has a function of sequentially transporting the plurality of electronic components 1 arranged from the upstream of the arranging path 33 to the downstream of the arranging path 33, that is, to the electronic component receiving position A. As shown in FIG. 1, the conveyor 4 has an endless belt 43 wound between a driving vehicle 41 driven based on the driving of a DC motor 40 and a rotatable following vehicle 42.
Form a part of the bottom surface of the flattening path 33. The first detector 44 is formed of an optical sensor having an optical fiber 44a, and the optical fiber 44a is vertically inserted into the inclined mounting portion 31, and is located above the downstream side of the conveyor 4; The presence / absence of the electronic component 1 is detected in a non-contact manner and the DC motor 4
0 is driven. Further, the DC motor 40 whose speed can be easily adjusted is provided inclining toward the rear of the inside of the bulk cassette 3, and is supplied with power to an ultra-life and small battery (power supply means) 8, such as a lithium battery, while being controlled by an electronic control circuit. 7 based on the control. The battery 8 and the electronic control circuit 7
As shown in FIG. 1, the bulk cassette 3 is disposed adjacent to the inside rearward. As shown in FIG. 4, a hopper pin wheel 45 is fitted on the drive shaft provided with the drive wheel 41, and the hopper 3 is mounted on the peripheral surface of the hopper pin wheel 45.
A plurality of pins 45a abutting on the lowermost portion of the projection 4 project at intervals of 90 °.

On the other hand, the above-described escapement (transporting means) 5 is disposed adjacent to the electronic component receiving position A as shown in FIG. 3, and is driven by the rotation of the ratchet 51 based on the driving of the stepping motor (drive source) 50. It has a function of sequentially rotating in the counterclockwise direction by 90 °, transferring the electronic component 1 received in the fitted state to the suction position B and positioning it. The escapement 5 has a thin flat circular shape, and a plurality of receiving cutouts 5a for receiving the electronic component 1 at the electronic component receiving position A are cut out at 90 ° intervals on a peripheral portion thereof. In addition, a stepping motor 50 with easy speed adjustment
Is provided near the inner front end of the bulk cassette 3, and has an escapement 5 fitted on a rotating shaft 50a oriented vertically upward, and is driven under the control of the electronic control circuit 7 while being supplied with power to the battery 8. ing.

Further, the shutter (concealing means) 6
As shown in FIG. 5, is fitted on the top of the rotating shaft 50a of the stepping motor 50, is disposed adjacent to the electronic component receiving position A, and is used for detection by the second detector (second detecting means) 60. Notch 6 by driving the stepping motor 50 based on
a from the concealing position C to the suction position B, and the electronic component 1
Is made to be vacuum-sucked to the suction nozzle. The shutter 6 located directly above the escapement 5 is formed as a thin (for example, 0.1 mm) flat circular plate, and has a single edge that exposes the receiving notch 5a at the electronic component receiving position A at the periphery thereof. The notch 6a is notched. The second detector 60 is formed of an optical sensor having an optical fiber 60a, and the optical fiber 60a
1, which has a function of driving the stepping motor 50 by the electronic control circuit 7 by detecting the presence or absence of the suction nozzle in a non-contact manner. However, the shutter 6 rotates together with the escapement 5 as the suction nozzle rises to displace the notch 6a from the suction position B to the concealing position C on the inclined falling surface side, and reverses independently as the suction nozzle descends. The notch 6a is returned from the concealing position C to the suction position B. Note that the shutter 6 is positioned and fixed to a latch 61 fitted on the rotating shaft 50a of the stepping motor 50.

Therefore, in order to vacuum-suck the electronic component 1 to the suction nozzle, the bulk case 2 may be mounted on the inclined mounting portion 31 of the bulk cassette 3 and the opening / closing shutter of the bulk case 2 may be opened.

Then, the plurality of electronic components 1 are discharged from the bulk case 2 and are temporarily stored in the storage room 32, and are sequentially sent from the storage room 32 to the delivery path 33. When a plurality of electronic components 1 are temporarily stored in the storage room 32,
Since the hopper 34 intermittently moves up and down to stir the storage room 32, the stagnation of the plurality of electronic components 1 in the storage room 32 can be prevented.

Next, when the plurality of electronic components 1 are delivered, the first detector 44 detects the presence or absence of the electronic components 1 in a non-contact manner, and causes the electronic control circuit 7 to control the DC motor 40, and the conveyor 4 Is started, and the electronic components 1 are sequentially transported to the downstream of the regular delivery path 33, that is, to the electronic component receiving position A. At this time, since the first detector 44 detects the electronic component 1 in a non-contact manner, stagnation of the electronic component 1 due to a collision can be prevented.

Next, the electronic component 1 is moved to the electronic component receiving position A.
When the electronic component 1 is inserted and received, the receiving notch 5a of the escapement 5 rotates 90 ° counterclockwise by the rotation of the ratchet 51 based on the driving of the stepping motor 50, and the receiving notch 5a The received electronic component 1 is transferred from the electronic component receiving position A to the suction position B for positioning. Further, in synchronization with this, the shutter 6 rotates 90 ° in the counterclockwise direction, and the notch 5a is displaced from the suction position B to the concealing position C on the inclined falling surface side. However, at this stage, the electronic component 1 at the suction position B is hidden by the shutter 6, and the vacuum suction of the suction nozzle becomes impossible.

Next, when the suction nozzle descends and approaches the shutter 6, the second detector 60 detects the depression of the suction nozzle in a non-contact manner, and controls the electronic control circuit 7 to control the stepping motor 50. The notch 6a is rotated clockwise by 90 °, and the notch 6a returns to the suction position B from the concealing position C on the inclined falling surface side. At this time, since the second detector 60 detects the suction nozzle in a non-contact manner, it is possible to prevent occurrence of vibration due to collision, uncertainty of electronic component supply due to coarse timing, and the like, and furthermore, Thus, the electronic component 1 can be supplied at a high speed.

When the notch 6a returns to the suction position B in this way, the receiving notch 5a and the notch 6a overlap to expose the electronic component 1 for the first time in a state in which the electronic component 1 can be sucked. It is vacuum-sucked by the suction nozzle, and then mounted at a predetermined position on the printed circuit board. When the suction nozzle rises, the escapement 5 rotates 90 ° counterclockwise. If the suction nozzle fails to suck the vacuum, the electronic component 1 is moved from the receiving notch 5 a to the inclined falling surface 3 with the rotation of the escapement 5.
6 to prevent waste and stagnation of work. Less than,
While the mounting of the electronic component 1 continues, the above operation is repeated.

According to the above configuration, the bulk cassette 3
Since the C motor 40, the stepping motor 50, the battery 8, and the electronic control circuit 7 are independently mounted, they can be easily used for other types of electronic component mounting machines, and a remarkable improvement in compatibility is expected. it can. In addition, since it operates without transmission of mechanical driving force from the electronic component mounting machine, uncertainty of electronic component supply due to vibration and coarse timing due to transmission of driving force, and difficulty in high-speed supply, etc. Can surely be solved.

Further, as the suction nozzle descends, the notch 6a of the shutter 6 returns from the concealing position C on the inclined falling surface side to the suction position B, and the receiving notch 5a and the notch 6a overlap to form the electronic component 1. The electronic component 1 is exposed before the suction nozzle descends to the suction position B because the suction nozzle is exposed to a state where it can be sucked.
Can be reliably prevented from being sucked by vacuum. Therefore, the electronic component 1 is vacuum-sucked in an abnormal posture,
As a result, it is possible to surely solve a major problem that a great trouble occurs in a subsequent mounting operation. Further, high-speed supply of the electronic component 1 can be expected.

Further, as shown in FIG. 1, since the bulk cassette 3 is configured to have substantially the same size as the constituent elements of the taping cassette indicated by the dashed line, the bulk cassette 3 cannot be used due to space or the like. Instead, it can be used very easily with other types of electronic component mounting machines, and a significant improvement in compatibility can be expected. In FIG. 1, reference numeral 10 denotes a reel for winding the top tape separated from the tape, and reference numeral 11 denotes a drive lever described in the conventional example.

In the above embodiment, the electronic component 1 is used, but other components may be used. Also,
In the above embodiment, the conveyor using the small-sized belt conveyor is shown. However, any other conveyor may be used as long as it performs the same function. In the above embodiment, the circular escapement 5 has four receiving notches 5a, and the circular shutter 6 has one notch 6a. Even if it is changed, the same operation and effect as in the above embodiment can be obtained. In the above embodiment, the suction nozzle for sucking the electronic component 1 by vacuum is used. However, it goes without saying that the present invention is not limited to this as long as it performs the same function. In the above-described embodiment, the DC motor 40 and the stepping motor 50 are used. However, the present invention is not limited to these as long as they perform the same function, and a solenoid or the like may be used. . Further, in the above-described embodiment, the first detector 44 and the second detector 60 each composed of an optical sensor are used.
However, the present invention is not limited to this as long as it performs the same function without contact. Furthermore, in the above-described embodiment, the DC motor 40 and the stepping motor 50 are controlled by the electronic control circuit 7 while being supplied with power to the battery 8, but the electronic control circuit 7 is supplied with power from the battery 8 to other mechanisms. In this case, the same operation and effect as those of the above embodiment can be obtained.

[0030]

As described above, according to the present invention, there is a remarkable effect that it can be easily used for another type of electronic component mounting machine, and that an improvement in compatibility can be expected. In addition, since it operates without transmitting mechanical driving force, it solves problems such as uncertainty of electronic component supply due to vibration of drive force transmission, coarse timing, etc., and difficulty of high-speed supply. There is a special effect that you can.

Further, there is an excellent effect that it is possible to prevent a component from being sucked before the suction means descends to the suction position, thereby causing a problem that mounting work is greatly hindered. There is a great effect that it can be eliminated.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a component supply device according to the present invention.

FIG. 2 is a plan view showing one embodiment of a component supply device according to the present invention.

FIG. 3 is an enlarged side view showing a front part of a bulk cassette of the component supply device according to the present invention.

FIG. 4 is an enlarged explanatory view showing a main part of a bulk cassette of the component supply device according to the present invention.

FIG. 5 is an enlarged plan view showing a front portion of a bulk cassette of the component supply device according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Electronic component, 2 ... Bulk case, 3 ... Bulk cassette, 4 ... Conveyor, 5 ... Escapement, 5a ... Reception cutout, 6 ... Shutter, 6a ... Notch, 7 ... Electronic control circuit, 8 ... Battery, 31 … Slope mounting part, 33…
Regulating path, 40 DC motor, 44 first detector, 50
... Stepping motor, 60: second detector, A: electronic component receiving position, B: suction position, C: concealing position.

Continuation of the front page (56) References JP-A-3-60933 (JP, A) JP-A-4-333412 (JP, A) JP-A-4-171892 (JP, A) JP-A-3-71698 (JP) U.S.A. 49-1443976 (JP, U) U.S.A. 2-38796 (JP, U) U.S.A. 4-118928 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB (Name) H05K 13/02

Claims (2)

(57) [Claims] 1. A case for supplying a part mounted and stored on a main body to a regular feeding path of the main body, a conveying means for conveying the component supplied to the regular feeding path to a component receiving position of the main body, and the part First detecting means for detecting the presence / absence of the component and operating the transport means, transferring means for transferring the component received at the component receiving position to the suction position of the main body, and lowering and sucking the component exposed at the suction position. Lifting and lowering suction means, a second detection means for detecting the lowering of the suction means, and a concealing means for exposing the parts concealed based on the detection of the second detection means to a state in which they can be suctioned; A component supply device, comprising: a control unit provided in the main body to control a conveying unit and a concealing unit; and a power supply unit provided in the main body to supply power to the conveying unit and the concealing unit. 2. The concealing means includes: a driving source provided inside the main body; a substantially circular shutter fitted on a rotation shaft of the driving source to conceal the substantially circular transfer means; A notch for exposing the component at the suction position, the notch being displaced from the suction position to the concealment position by rotating by a predetermined angle based on the elevation of the suction means, and 2. The component supply device according to claim 1, wherein the notch is rotated by a predetermined angle based on the detection to return the notch from the concealing position to the suction position.