JP3352796B2 - Mounting structure of component supply part of mounting machine - 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 feeder mounting structure for detachably mounting a component feeder unit having a plurality of tape feeders to a mounting machine main body, and in particular, each tape feeder is provided with an air cylinder. It relates to the mounting structure in the case.

[0002]

2. Description of the Related Art Conventionally, a large number of tape feeders are arranged in parallel in a component supply section of a mounting machine for mounting chip components on a printed circuit board, and the tape components are sequentially fed out by a tape feeder to a movable head unit. It is generally known that a chip component is taken out of a tape feeder by a suction nozzle provided. The tape feeder is, for example, Japanese Patent Publication No. 3-4
As disclosed in Japanese Patent Laid-Open No. 5560, a tape containing chip components at predetermined intervals is led out from a reel and guided to a component pick-up unit, and a tape feed-out mechanism is provided near the component pick-up unit, and a component pick-up mechanism is provided. As the chip components are picked up by the suction nozzle of the head unit in the section, the tape is fed out by a predetermined amount by the feeding mechanism, so that the chip components are supplied one after another.

The above-mentioned feeding mechanism is usually operated mechanically when the suction nozzle provided in the head unit is lowered for pickup. That is, the head unit is provided with a projection for operating the feeding mechanism that moves up and down together with the suction nozzle, and an operated portion connected to the feeding mechanism is provided on the tape feeder. When the operated part is pushed down, the feeding mechanism is operated in conjunction with this.

However, in such a structure, the feeding mechanism operates after the suction nozzle has been lowered to a predetermined height. It is inevitable that a slight delay occurs, which hinders a reduction in cycle time.

Therefore, the applicant has provided an air cylinder in the tape feeder, and operates the feeding mechanism with the air cylinder, thereby making it possible to accelerate the operation timing of the feeding mechanism and shortening the cycle time. An invention of such a component supply device has already been filed (Japanese Patent Application No. 5-134652).

[0006]

By the way, in this type of mounting machine, when the tape of each tape feeder is consumed, or when the type of chip component to be mounted is largely changed due to a change of a printed board, etc. It is desirable that the component supply unit including a large number of tape feeders can be replaced collectively. For this reason, it is not possible to replace the component supply unit in a batch by attaching a large number of tape feeders to the feeder holding plate in a state where they are arranged in parallel, and making this feeder holding plate detachable from the mounting machine body. This has been done in the past. However, in the case where each feeder holding plate is provided with an air cylinder as described above, the following problem remains.

That is, when each feeder holding plate is provided with an air cylinder, it is necessary to provide an air passage between each of the feeder holding plates and the mounting machine main body having an air supply source. In the case of batch replacement of units, it is necessary to separate and connect the air passage between the component supply unit and the mounting machine main body, and the work tends to be troublesome. Also, in order to enable the air cylinders of each of the tape feeders to be individually operable, it is necessary to provide valves for air supply / discharge switching for each of them, but these many valves are provided in the component supply unit. If this is provided, if a plurality of sets of component supply units are prepared for replacement, all of them must be equipped with valves, which leads to an increase in cost and also when transporting the component supply unit. The valve becomes an obstacle during storage.

In view of the above circumstances, the present invention facilitates batch replacement of a component supply unit in a device in which an air cylinder is provided in each tape feeder of the component supply unit for shortening a cycle time. It is another object of the present invention to provide a component supply unit mounting structure for a mounting machine that can reduce the cost.

[0009]

In order to achieve the above object, the present invention provides a component supply unit by mounting a plurality of tape feeders in a state of being arranged in parallel to a feeder holding plate. The unit has a structure in which the unit is detachably attached to the mounting machine main body, and a feeding mechanism that feeds a tape containing chip components at predetermined intervals to each tape feeder of the component supply unit by a predetermined amount, and this feeding mechanism. The air cylinder to be driven and this
An air passage connecting portion communicating with the air introduction port of the air cylinder, and forming a plurality of rows of air passages corresponding to the respective tape feeders on the feeder holding plate; A plurality of rows of main body side air passages arranged to correspond to the respective air passages and connected to an air supply source, and an air distribution supply section having a valve provided in each of the main body side air passages are provided. Feeder holder
Each air passage of the holding plate is connected at one end to each tape feeder.
It can be connected to the air passage connection part and the other end
Is open at the bottom of the plate, and the other end
Is connectable with the side air passages, the off by attaching the component supply section unit to the mounting machine body in a state where the feeder retaining plate is positioned on said air dispensing unit
The configuration is such that each air passage of the feeder holding plate coincides with each of the main body side air passages.

[0010]

According to the present invention, when the above-mentioned component supply unit is mounted on the mounting machine main body, the air passages of the feeder holding plate and the main body side air passages coincide with each other so that these air passages are connected. When the component supply unit is removed from the mounting machine main body, the air passages of the feeder holding plate and the main body side air passages are separated from each other, which is troublesome for connection and separation of the air passages. No work required. Also, a number of valves corresponding to the air cylinders of the respective tape feeders are provided on the mounting machine main body side, and it is not necessary to equip the component supply unit with the valves.

[0011]

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

FIGS. 1 to 3 show the entire structure of a component supply unit mounting structure of a mounting machine according to an embodiment of the present invention. In these figures, reference numeral 1 denotes a mounting machine main body,
A pair of frames 3A and 3B are provided on the base 2 at right and left sides (X-axis direction) at predetermined intervals.

A head unit 4 is provided above the mounting machine main body 1 so as to be movable in the X-axis direction and the Y-axis direction.

That is, a fixed rail 5 extending in the Y-axis direction is provided on the upper ends of the frames 3A and 3B. A head unit supporting member 6 is mounted on the fixed rail 5 so as to be movable in the Y-axis direction. One frame 3A,
A Y-axis servo motor (not shown) is attached to 3B, and the head unit support member 6 is operated by the motor via a ball screw (not shown). The head unit support member 6 is provided with a guide member 7 extending in the X-axis direction, an X-axis servo motor 8 and a ball screw 9, so that the head unit 4 can move on the guide member 7 in the X-axis direction. It is mounted and is operated via the ball screw 9 by the X-axis servo motor 8.

The head unit 4 is provided with a suction nozzle (not shown) which can be moved up and down and rotatable. The head unit 4 can be moved in the X and Y directions, and the suction nozzle can be moved up and down.
By the rotation, the chip component is picked up from the component supply unit and mounted on a printed board (not shown).
Since the specific structure of the head unit 4 is conventionally known, detailed illustration and description thereof will be omitted.

A component supply section unit installation section 11 is provided between the pair of frames 3A and 3B on the base 2 of the mounting machine body 1, and air is distributed to the component supply section unit installation section 11. A supply unit 15 is provided.

The component supply section unit installation section 11 includes a pair of support sections 12A and 12B provided inside the pair of frames 3A and 3B, and both support sections 12A and 12B.
B-shaped horizontal frame 13 provided below between B
And

The air distribution and supply section 15 forms a main body side air passage as will be described in detail later.
6, a lower horizontal member 17, and a frame member 18 between the two horizontal members. The frame member 18 is located above the horizontal frame 13 and extends in the X-axis direction. Both ends of the upper horizontal member 16 are fixed to the support portions 12A and 12B with bolts or the like. Also,
The lower horizontal member 17 is provided with adjusters 19 provided at a plurality of locations.
And is supported by the horizontal frame 13. The adjuster 19 is capable of finely adjusting the heights of a plurality of locations of the air distribution / supply unit 15. Fine adjustment of the height of each unit by the adjuster 19 can adjust the deflection of the air distribution / supply unit 15. Is available.

A component supply unit 20 is detachably attached to the mounting machine main body 1 above the component supply unit installation section 11.

The component supply unit 20 has a large number of tape feeders 22 arranged in parallel, and a feeder holding plate 21 for holding these tape feeders 22. In a state where the feeder holding plate 21 is located above the air distribution / supply unit 15, both ends thereof are supported by the support units 12A and 12B, and are clamped by the clamp means 50, so that the component supply unit is provided. The unit 20 is fixed to the mounting machine main body 1.

The feeder holding plate 21 is formed in a plate having an appropriate thickness so as to obtain the strength and sufficient rigidity required to hold a large number of tape feeders 22. Note that projecting pieces 21 a extending outward in the width direction are fixed to both ends of the feeder holding plate 21.

FIG. 4 shows a specific structure of the tape feeder 22. In this figure, the tape feeder 22 is detachably attached to the feeder holding plate 21 by the clamp member 23 in a state where the lower surface of the front part thereof is in contact with the upper surface of the feeder holding plate 21.

At the rear of the tape feeder 22, a reel 24 around which a tape 25 is wound is rotatably mounted. The tape 25 is composed of a tape body in which a large number of component storage sections for storing chip components are formed at predetermined intervals, and a cover tape 25a that covers the upper surface thereof.

At the front end of the tape feeder 22, a component take-out portion 26 is provided, and the tape 25 led out from the reel 24 is guided to the component take-out portion 26 via a guide roller. Then, the cover tape 25a is peeled off, so that the chip components can be taken out by the suction nozzle of the head unit 4.

Below the component take-out section 26, there is provided a feeding mechanism 27 for intermittently feeding the tape 25 guided to the component take-out section 26 by a predetermined amount. The feeding mechanism 27 includes a sprocket (not shown) that engages with the tape 25, and a ratchet 28 connected to the sprocket. The tape 25 is fed as the ratchet 28 rotates in one direction. It has become.

The tape feeder 22 shown in FIG.
A take-off mechanism 29 for picking up the cover tape 25a peeled off from the tape main body at the component take-out section 26 is provided, and the cover tape 25a is guided to the take-up mechanism 29 via a guide roller.

The take-off mechanism 29 includes a pair of rollers 29a and 29b which are in close contact with each other. One of the rollers 29a is connected to a driving member 30 provided coaxially with the pair via a one-way clutch. . Then, the driving member 30 and the ratchet 28 of the feeding mechanism 27 are
They are connected via links 31, 32, 33.

An air cylinder 35 is provided on the tape feeder 22 to operate the feeding mechanism 27 and the take-up mechanism 29. The delivery mechanism 27 and the take-off mechanism 29 are connected to the rod 35a of the air cylinder 35. In the illustrated embodiment,
The drive member 30 is attached to the rod 35a of the air cylinder 35.
Are connected via the lever 36 and the link 37, and the delivery mechanism 27 is connected to the rod 35a of the air cylinder 35 via these and the links 31, 32, 33.

The air inlet 35 of the air cylinder 35
b is connected via a hose or the like to a male air joint 38 provided at a lower front portion of the tape feeder 22 at a joint with the feeder holding plate 21.

On the other hand, the female air joint 3 is placed on the feeder holding plate 21 at a position corresponding to the male air joint 38 of each of the tape feeders 22 disposed thereon.
The air joints 38 and 39 are automatically connected when the tape feeder 22 is attached to the feeder holding plate 21.
Further, the feeder holding plate 21 has a plurality of rows of air passages 40 connected to the air joint 39. Each of the air passages 40 is bent downward from the side of the air joint 39 and opens on the lower surface of the feeder holding plate 21.

FIG. 5 shows the air distribution / supply unit 15 of the mounting machine main body 1.
2 shows an air circulation path extending between the feeder holding plate 21 and the feeder holding plate 21. In this figure, the air distribution and supply unit 15
In the lower horizontal member 17, a common air passage 41 connected to an air pump (not shown) is formed in the longitudinal direction of the lower horizontal member 17, and a number of bolt members 42 cross the common air passage 41. The bolt member 42 has a vertical hole 45 opened upward and a vertical hole 45
And a communication hole 45a that communicates with the common air passage 41. A bolt member 43 is attached to the upper horizontal member 16 of the air distribution / supply unit 15 at each location corresponding to the bolt member 42, and a vertical hole 46 vertically penetrating the upper horizontal member 16 and the bolt member 43. Is formed. The vertical holes 45 and 46 communicate with each other via a passage in the frame member 18.

The main body side air passage 44 is constituted by the vertical holes 45 and 46 and the like. The main body side air passage 44 is connected to the air passage 4 of the feeder holding plate 21.
In a state where the component supply unit 20 is attached to the mounting machine main body 1 in a number of rows provided so as to correspond to 0,
Each air passage 40 of the feeder holding plate 21 and the main body side air passage 44 are aligned and communicate with each other. In addition,
Around the upper end opening of the vertical hole 43 of the upper horizontal member 16,
A seal member 47 for sealing between the lower surface of the feeder holding plate 21 and the feeder holding plate 21 is provided.

Each of the main body side air passages 44 is provided with a valve 48 for switching air supply / discharge, such as an electromagnetic valve.
The valve 48 is provided on the frame member 18.

FIGS. 6 and 7 show the support section 12A and the clamping means 50 in the component supply section unit installation section 11. FIG.
Is shown. In these drawings, only the support part 12A and the clamp means 50 on one side are shown, but the support part 12B and the clamp means 5 on the opposite side are shown.
0 is formed in substantially the same manner.

In these figures, the support portion 12A
Has a support surface 60 for supporting the feeder holding plate 21 at the upper end on the inner side thereof. Also, the clamping means 5
Reference numeral 0 denotes a clamp rod 51 rotatably attached to the frame 3A of the mounting machine body 1, a clamp plate 52 connected to the clamp rod 51 via an eccentric shaft inside the frame 3A, and the frame 3A. And a clamp air cylinder 55 attached thereto. The clamp plate 52 is provided with a plurality of guide pins 53 arranged at the same height at predetermined intervals and a crank pin 54 located above the guide pins 53, protruding inward. The feeder holding plate 21 is inserted between the guide pin 53 and the crank pin 54.

The clamp rod 51 is rotated by the air cylinder 55 via a lever 56, and accordingly, the crank plate 52 is displaced between a raised position indicated by a solid line in FIG. 7 and a lowered position indicated by a two-dot chain line. . When the crank plate 52 is at the raised position, the feeder holding plate 21 is in an unclamped state in which it can slide freely on the guide pins 53. When the crank plate 52 is at the lowered position, the guide pins 53
Are immersed below the support surface 60 of the support portion 12A, and the crank pin 54 presses the feeder holding plate 21 against the support surface 60 so as to be in a clamped state.

According to the structure of the present embodiment as described above, when the component supply unit 20 is attached to the mounting machine main body 1, the component supply unit 20 is disposed in the air distribution supply unit of each mounting machine main body 1. The main body side air passage 44 communicates with the air passage 40 provided in the feeder holding plate 21 of the component supply unit 20, so that pressurized air can be supplied to the cylinder 35 of each tape feeder 22.

In this state, the tape feeder 22
When the chip components are taken out of the apparatus, the operation of the head unit 4 and the lifting and lowering of the suction nozzles are controlled by a control unit (not shown), and the suction nozzles 12 suck the chip components, and the valve 48 is also controlled. The supply and discharge of air to and from the air cylinder 35 are switched, and the operation of the delivery mechanism 27 by the air cylinder 35 is performed. Thus, every time the chip component is taken out, the tape 5 is fed out by a fixed amount. In this case, by using the air cylinder 35, the operation timing can be adjusted to coincide with the start of the component removal operation, and the cycle time can be reduced.

When the tape 25 of each tape feeder 22 is consumed or when the type of chip component needs to be changed, the component supply unit 20 is taken out of the mounting machine body 1 for batch replacement. In this case, the component supply unit 20 is drawn out after the clamp means 50 is operated in the non-clamp state, so that the component supply unit 20 can be easily mounted on the mounting machine body 1.
Can be taken from

After taking out the component supply unit, a new component supply unit 20 is attached to the mounting machine body 1. In this case, the frames 3A, 3B of the mounting machine body 1
After the feeder holding plate 21 is inserted from the outside onto the component supply section unit installation section 11 between the outer sides and set so that the feeder holding plate 21 is positioned on the upper horizontal member 16 of the air distribution supply section 15, the clamp means 50 is clamped. Activate Thereby, the component supply unit 20 is fixed in a state where the air passages 40 and the main body side air passage 44 are aligned. In this way, the installation is simple.

At the time of mounting the component supply unit, the adjuster 19 is operated, if necessary, so that the upper horizontal member 16 of the air distribution / supply unit 15 is in close contact with the feeder holding plate 21 over the entire length. The deflection can be adjusted.

The clamp means 50 for fixing the component supply unit 20 to the mounting machine main body 1 is not limited to the one shown in the above embodiment, and various other clamp means can be adopted. Also, instead of the clamping means 50, the feeder holding plate 21 of the component supply unit 20 is fixed to the mounting machine body with a bolt, and the component supply unit 20 can be removed by removing the bolt. May be.

The structure of each of the other parts may be variously changed without departing from the gist of the present invention.

[0044]

As described above, the component supply unit mounting structure according to the present invention constitutes a component supply unit unit by mounting a large number of tape feeders provided with air cylinders for driving a tape feeding mechanism to a feeder holding plate. However, this component supply unit is detachable from the mounting machine main body, so that the component supply unit can be replaced collectively. In particular, while a large number of rows of air passages corresponding to the air cylinders of the respective tape feeders are formed in the feeder holding plate, a large number of body side air paths and the body side air passages are provided in the mounting machine body. An air distribution supply unit having a valve is provided, and the component supply unit unit is attached to a mounting machine main body in a state where the feeder holding plate is positioned on the air distribution supply unit. Since the respective main body side air passages are configured to coincide with each other, the work of attaching and detaching the component supply unit including connection and separation of the air passages can be easily performed.

Further, since a large number of valves corresponding to the air cylinders of the tape feeders are provided on the mounting machine main body side, when a plurality of replacement component supply units are prepared and placed, each component can be used. There is no need to equip the supply unit with a valve, which is advantageous for cost reduction, and also provides effects such as convenient storage and transportation of the component supply unit.

[Brief description of the drawings]

FIG. 1 is a front view of a component mounting structure according to an embodiment of the present invention.

FIG. 2 is a plan view of the same structure.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a side view of a tape feeder and a feeder holding plate.

FIG. 5 is an enlarged front view, partially in section, of an air distribution and supply unit.

FIG. 6 is an enlarged sectional view of a portion provided with a clamping means.

FIG. 7 is a view taken in the direction of arrow B in FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mounting machine main body 15 Air distribution supply part 20 Component supply part unit 21 Feeder holding plate 22 Tape feeder 35 Air cylinder 40 Air passage 44 Main body side air passage 48 Valve

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-48299 (JP, A) JP-A-64-72600 (JP, A) JP-A-63-156631 (JP, A) JP-A 63-56631 27099 (JP, A) JP-A-63-29941 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H05K 13/02

Claims (1)

(57) [Claims] 1. A structure in which a plurality of tape feeders are arranged in parallel and attached to a feeder holding plate to form a component supply unit, and the component supply unit is detachably attached to a mounting machine body. A feeding mechanism for feeding a tape containing chip components at predetermined intervals to the respective tape feeders of the component supply unit by a predetermined amount, an air cylinder for driving the feeding mechanism ,
An air passage connecting portion communicating with the air introduction port of the air cylinder, and forming a plurality of rows of air passages corresponding to the respective tape feeders on the feeder holding plate; A plurality of rows of main body side air passages arranged to correspond to the respective air passages and connected to an air supply source, and an air distribution supply section having a valve provided in each of the main body side air passages are provided. Feeder holder
Each air passage of the holding plate is connected at one end to each tape feeder.
It can be connected to the air passage connection part and the other end
Is open at the bottom of the plate, and the other end
Is connectable with the side air passages, the off by attaching the component supply section unit to the mounting machine body in a state where the feeder retaining plate is positioned on said air dispensing unit
A component supply part mounting structure for a mounting machine, wherein each air passage of the feeder holding plate and each of the main body side air passages are configured to coincide with each other.