JP3142684B2 - 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 a component in which a tape containing chip parts at predetermined intervals and a tape feeder provided with a feeding mechanism for feeding the tape parts are mounted on a mounting machine to supply chip parts. The present invention relates to a supply device.

[0002]

2. Description of the Related Art Conventionally, a tape feeder has been provided in a mounting machine for mounting chip components on a printed circuit board, and a plurality of chip components are successively sent to a predetermined position by a tape feeder while being provided in a movable head unit. It is generally known that a chip component is taken out of a tape feeder at the above-mentioned predetermined position by using a component suction nozzle member.

The above-mentioned tape feeder is, for example,
As shown in JP-A-45560, a tape having a cover tape adhered to the upper surface of a tape body having a large number of chip component storage portions opened upward at predetermined intervals is provided in a state wound in advance on a reel. And a mechanism for peeling off the cover tape from the tape body in front of the component take-out section, and a tape feeding mechanism near the component take-out section. Is provided.
Then, the chip components are taken out of the tape main body at the component take-out portion by the nozzle member of the head unit, and the tape is fed out by a predetermined amount by the feeding mechanism, whereby the chip components are supplied one after another. It has become.

In the above-mentioned feeding mechanism, a member engaging with the tape is connected to a ratchet, and the tape is fed by the operation of the ratchet. As a mechanism for operating the feeding mechanism in accordance with the removal of the chip component, the head unit is provided with a ratchet operating protruding piece that moves up and down together with the nozzle member, and when the nozzle member is lowered for component removal. Further, the ratchet is rotated by pushing down the actuated part connected to the ratchet by the protruding piece.

[0005]

The mechanism for operating the feeding mechanism in the above-described conventional component supply apparatus is such that when the nozzle member is lowered to a predetermined height, the projection comes into contact with the operated portion, and Since the ratchet rotates, it is unavoidable that a slight delay occurs in the start of the rotation of the ratchet with respect to the start of the lowering of the nozzle member for component removal, which hinders a reduction in cycle time. .

The present invention has been made in view of the above circumstances, and provides a component feeder having a relatively simple structure that can quickly operate a tape feeder feeding mechanism and can shorten a cycle time. The purpose is to do.

[0007]

In order to achieve the above-mentioned object, the present invention provides a tape holding section for holding a tape containing chip components at predetermined intervals, and a predetermined amount of tape led out from the tape holding section. An air cylinder is provided on the tape feeder in a component supply device in which a tape feeder having a feeding mechanism that intermittently feeds the tape feeder is detachably attached to a tape feeder installation portion of a mounting machine, and the feeding mechanism is operated by the air cylinder. In addition to connecting the rod of the air cylinder and the feeding mechanism so as to make the air supply passage provided in the tape feeder installation section at an area corresponding to the tape feeder and the tape feeder installation section, an air passage leading to the air cylinder is provided. mutually detachable joint portion connected to the discharge means is provided, this joint It is provided in the tape feeder
Male joint part projected downward and the tape
It has a female joint provided in the feeder installation section.
The upper end communicates with the air joint at the male joint.
And the center air flow hole whose lower end is closed
Radius from the air flow hole to the peripheral surface of the male joint
Direction air flow holes, while the female side join
To the male joint part, and
A penetrating fitting hole, one end side of which opens into this fitting hole and the other end
Air flow whose side extends radially outward of the female joint
Hole and this air flow hole outside the female joint in the radial direction.
Forming a communication part communicating with the air supply / discharge means on one side,
The male joint and female joint are fitted
Sometimes, the air flow holes in both radial directions communicate with each other.
It has been achieved .

[0008]

[0009]

According to the present invention, when the chip component is taken out from the tape feeder, the supply / discharge of air to / from the air cylinder is switched accordingly, and the feeding mechanism by the air cylinder is operated. Each time the chip component is taken out, the tape is fed out by a fixed amount. In this case, the operation timing of the air cylinder can be adjusted so as to coincide with the start of the component removal operation or the like. The supply and discharge of air to and from the air cylinder are performed through the air supply and discharge means, the joint, and the air passage. When the tape feeder is attached to / detached from the tape feeder installation section, the joint section is attached / detached accordingly.

[0010] Further, the joint portion is configured as described above.
In the state where the two joints are connected, the radial air communication hole of the two joints and the central air communication hole of the male joint are connected to the air supply / discharge means and the air passage communicating with the air cylinder. Communication. Further, in a state in which the two joint portions are separated, even if dust enters the fitting hole, the dust falls as it is, and the dust does not accumulate in the air circulation hole and the like.

[0011]

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

FIG. 1 shows the entire structure of a component supply apparatus according to one embodiment of the present invention, and FIG. 2 shows the structure of a main part.
In FIG. 1, reference numeral 1 denotes a tape feeder, and its main body is composed of a feeder plate 2 on the front side and a reel plate 3 on the rear side. A reel 4 is rotatably mounted on the reel plate 3, and a tape 5 containing a large number of chip components is wound around the reel 4. The reel plate 3 is connected to the feeder plate 2 so that the reel 4 can be easily replaced.
Are removably connected to the main body. Further, the feeder plate 2 is detachably attached to a base 6 of a feeder installation portion of the mounting machine.

The tape 5 comprises a tape body 5a and a cover tape 5b. The tape main body 5a is provided with a large number of component storage portions (not shown) opened upward at predetermined intervals, and each component storage portion stores a chip component (not shown).

At the front end of the feeder plate 2, a component take-out portion 10 is provided.
Is guided to the component take-out section 10 via the guide rollers 7 and 8, where the cover tape 5b is peeled off from the tape main body 5a, so that chip components can be taken out. And when taking out parts,
With the head unit 11 mounted on the mounting machine at a position corresponding to the component take-out unit 10, the height of the nozzle member 12 provided in the head unit 11 in the component take-out unit 10 in proximity to the tape body 5a The nozzle component 12 is moved down to a position where the chip component in the component storage unit is sucked and taken out. The head unit 11 can be moved over a place where the tape feeder 1 is arranged in the mounting machine and a place where the printed board is arranged, and the nozzle member 12 can be moved up and down with respect to the head unit 11. Head unit 1 by a drive mechanism such as a motor
1 and the nozzle member 12 is moved up and down.

A feeding mechanism 15 for intermittently feeding the tape 5 guided to the component take-out unit 10 by a predetermined amount is provided below the component take-out unit 10. The feeding mechanism 15 includes a sprocket 16 facing the tape passing portion of the component take-out unit 10 and a ratchet 17 connected to the sprocket 16. The sprocket 16 is adapted to engage with an engaging hole (not shown) provided in the tape 5 when the tape 5 passes through the component take-out portion 10.

Further, in order to discharge the tape main body 5a after the parts are taken out, a tape main body discharge passage 18 for a narrow tape is formed from the front part of the tape feeder 1 to the lower part of the middle part. The tape main body discharge passage 19 for a wide tape is formed from the tape main body 6 to the lower part of the base 6 of the mounting machine.
a is discharged. On the other hand, in order to discharge the cover tape 5b after peeling, a plurality of guide rollers 2 are required.
1, 2, 23, a guide plate 24, and a cover tape take-off mechanism 25 are disposed on the feeder plate 2, and the cover tape 5 is moved from the component take-out portion 10 to the guide rollers 21, 22, the guide plate 24, the guide roller 24. , And the cover tape 5b is pulled by the pulling force of the pulling mechanism 25 into the tape body 5a.
Is to be peeled off.

The take-off mechanism 25 includes a pair of rollers 25a and 25b which are in close contact with each other. One of the rollers 25a is connected to a driving member 26 which is provided coaxially with the pair.
It is connected via a one-way clutch that transmits only rotation in the forward direction. The driving member 26 and the ratchet 17 of the feeding mechanism 15 are connected via links 27, 28, and 29.

An air cylinder 31 is provided on the tape feeder 1 to operate the feeding mechanism 15 and the take-up mechanism 25. The air cylinder 31 is attached to an appropriate portion of the feeder plate 2, and the feeding mechanism 15 and the take-off mechanism 25 are connected to a rod 31 a of the air cylinder 31. In the illustrated embodiment, a driving member 26 provided on the take-off mechanism 25 is attached to a rod 31 a of an air cylinder 31 by a lever 32.
And the link 33, and the feed mechanism 1 via these and the links 27, 28, and 29.
5 is connected to the rod 31 a of the air cylinder 31.

The air supply / discharge system for the air cylinder 31 is as shown in FIG. In this figure, an air cylinder 31 is composed of a hose 35 and an air passage 36 provided on the feeder plate 2 and a pair of detachable joints provided at a joint between the feeder plate 2 and the base 6 of the mounting machine. It is connected to an air valve (air supply / discharge means) 41 provided on the base 6 via the portions 37 and 38, the air passage 39 on the base 6 side, and the hose 40. The air valve 41 is controlled by a control unit (not shown) to switch between an air supply state and an air discharge state.
When the power is supplied (ON), the air supply state is switched, and pressurized air from an air supply source (not shown) is sent to the air cylinder 31. When the air valve 41 is in the air discharging state, air is discharged from the air cylinder 35. In this case, in order to quickly discharge the air, the air suction side for suctioning the discharged air is provided to the air discharging side of the air valve 41. Means (not shown) are connected.

One of the pair of joints has a male joint 3 provided on the feeder plate 2.
The other is a female joint 38 provided on the base 6 of the mounting machine. These joints 37 and 38 also serve as positioning means for the tape feeder 1. When the tape feeder 1 is attached, the male joint 37 and the female joint 38 are fitted together, and the front of the feeder plate 2. The positioning pin 43 provided in the section is fitted in the fitting hole 44 of the base 6 and the feeder plate 2 is mounted by the mounting bracket 7 in the state of being positioned in this manner.
Can be attached to the base (see FIG. 1).

FIG. 3 shows a specific structure of the joint section and the air flow path near the joint section. In this figure,
The male joint portion 37 projects below the feeder plate 2 and is formed in a columnar shape. The male joint portion 37 has a central air communication hole 47 at the center thereof, the upper end communicating with the air passage 36 and the lower end closed. And a radial air flow hole 48 extending from the central air flow hole 47 to the peripheral surface of the male joint portion 37. The radial air flow holes 48 extend radially from the center air flow hole 47 in all directions.

On the other hand, the female joint 38 comprises a joint member 51 press-fitted and fixed in a vertical hole 50 provided in the base 6, and the joint member 51 fits the male joint 37. It is formed in a cylindrical shape having a fitting hole 52 that fits. The vertical hole 50 penetrates through the base 6 and opens up and down.
Fitting hole 52 also penetrates up and down.

At an intermediate position of the joint member 51,
Air flow holes 53 having one end opening to the fitting hole 52 and the other end extending radially outward of the joint member 51 are radially arranged in four directions. These positional relationships are set so that the respective radial air communication holes 48 and 53 communicate with each other when the male joint portion 37 is fitted into the fitting hole 52.

On the outer peripheral portion of the joint member 51, an annular groove 54 is formed at an intermediate position as a communicating portion communicating with the air flow hole 53, and sealing grooves 55 and 56 are formed on both upper and lower sides. O-rings 57 and 58 are mounted in the sealing grooves 55 and 56.
The annular groove 54 has an air passage 39 provided in the base 6.
Are in communication.

According to the component supply apparatus of the present embodiment as described above, in use, the tape feeder 1 is attached to the base 6 of the mounting machine, and the tape 5 is led out to the component pick-up unit 10 and used. The cover tape 5b peeled off from the main body 5a is set so as to be taken up by the take-up mechanism 25. In this state, the chip component is taken out (adsorbed) by the nozzle member 12 of the head unit 11. The operation of picking up the chip components and carrying the picked-up chip components onto the printed circuit board for mounting are repeatedly performed by the head unit 11.

The operation of the head unit 11 is controlled by a control unit (not shown). The air valve 41 is also controlled, and the supply and discharge of air to and from the air cylinder 31 are switched when a component removal operation is performed. Thus, the operation of the feeding mechanism 15 by the air cylinder 31 is performed. Then, every time the chip component is taken out, the tape 5 is fed out by a fixed amount.

By using the air cylinder 31 operated by the control signal in this manner, the operation timing can be adjusted so as to coincide with the start of the component pick-up operation, and the operation timing of the feeding mechanism can be advanced. .

The air supply system for the air cylinder 31 is provided with detachable joints 37 and 38. When the tape feeder 1 is attached to and detached from the mounting machine, no special operation is required. , 38 are also attached and detached.

In particular, the joints 37 and 38 are shown in FIG.
With the structure as shown in FIG. 4, clogging of the air passage and the like can be prevented.

In other words, as a simple joint structure, the air flow hole of the male joint is opened downward and the air passage leading to the air valve is opened at the bottom of the fitting hole of the female joint. However, according to this structure, when the two joints are separated from each other, dust such as chips that have entered the fitting hole of the female joint is sucked into the air passage, and the air passage is likely to be clogged. If the air passage is clogged, the supply and discharge of air is hindered during subsequent use, which may lead to malfunction of the air cylinder. On the other hand, according to the structure of the present embodiment, since the fitting holes 52 of the female joint 38 penetrate vertically, as shown in FIG.
When the chips 7 and 38 are separated, even if dusts such as chips enter the fitting holes 52 of the female joint portion 38, the dusts and the like fall down as they are, so that dusts are prevented from accumulating in the air circulation holes 53 and the air passages 39. Thus, clogging of the air circulation holes 53 and the like is prevented.

The specific structure of the mounting machine to which the component supply device of the present invention is applied is not limited to the present invention, and various structures can be adopted. For example, the head unit may be provided with a single nozzle member, but is equipped with a large number of nozzle members in order to improve processing efficiency, and simultaneously from a large number of tape feeders determined at predetermined positions of the mounting machine, or The chip components may be sequentially sucked. Also,
The head unit can be moved in both directions of the X-axis direction and the Y-axis direction, and the head unit can be moved between the tape feeder disposition portion and the substrate while the printed circuit board is stopped at a fixed position during the mounting operation. Good
While the head unit can be moved only in the X-axis direction,
The station supporting the printed circuit board may be movable in the Y direction.

[0032]

As described above, the component supply apparatus of the present invention
An air cylinder is provided in the tape feeder, and the rod and the above-mentioned feeding mechanism are connected to each other so that the above-mentioned feeding mechanism is operated by the air cylinder. As compared with the conventional device in which the feeding mechanism operates in conjunction with the above, the operation timing of the feeding mechanism can be advanced, and the cycle time can be shortened. In addition, at the corresponding position between the tape feeder and the tape feeder installation section, a mutually detachable joint that connects the air passage leading to the air cylinder to the air supply / discharge means on the tape feeder installation section side is provided. And the air supply / discharge system can be provided effectively without inconvenience in attaching / detaching the tape feeder to / from the mounting machine.

Further, as the structure of the joint portion in the present invention, a central air flow hole whose lower end is closed and a radial air flow hole communicating therewith are formed in the male joint portion provided in the tape feeder, On the other hand, the female side joint part provided in the tape feeder installation part is formed with a fitting hole penetrating in the vertical direction, a radial air circulation hole and a communicating part for communicating this with the air supply / discharge means, and both joint parts are formed. When the joints are fitted, the air flow holes in the radial direction are connected to each other, so that the air flow path is secured when both joints are fitted. Moreover, when the two joint portions are separated from each other, it is possible to prevent a situation in which dust entering the fitting hole clogs the air passage and the like, and to maintain a good function.

[Brief description of the drawings]

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

FIG. 2 is a partially enlarged front view of a main part of the device.

FIG. 3 is an exploded enlarged sectional view of a joint portion of an air supply / discharge system in the same device.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 tape feeder 5 tape 6 base of tape feeder installation portion 15 feeding mechanism 31 air cylinder 37 male side joint portion 38 female side joint portion 47 center air flow hole 48 radial air flow hole 52 fitting hole 53 radial direction Air flow hole 54 Annular groove

Claims (1)

(57) [Claims] 1. A tape feeder comprising: a tape holding unit for holding a tape accommodating chip components at predetermined intervals; and a feeding mechanism for intermittently feeding a tape derived from the tape holding unit by a predetermined amount. In the component supply device detachably attached to the tape feeder installation portion, an air cylinder is provided in the tape feeder, and the rod of the air cylinder is connected to the feed mechanism so that the feed mechanism is operated by the air cylinder. , the corresponding portion of the tape feeder and the tape feeder installation section, provided mutually detachable joint portion connected to the air supply and discharge means provided with an air passage leading to the air cylinder to the tape feeder installation section, the joint Section is provided on the above tape feeder
Male joint part projected downward and the tape
It has a female joint provided in the feeder installation section.
The upper end communicates with the air joint at the male joint.
And the center air flow hole whose lower end is closed
Radius from the air flow hole to the peripheral surface of the male joint
Direction air flow holes, while the female side join
To the male joint part, and
A penetrating fitting hole, one end side of which opens into this fitting hole and the other end
Air flow whose side extends radially outward of the female joint
Hole and this air flow hole outside the female joint in the radial direction.
Forming a communication part communicating with the air supply / discharge means on one side,
The male joint and female joint are fitted
Sometimes, the air flow holes in both radial directions communicate with each other.
The component supply device according to claim 1, wherein