JP2002171091A - Electronic component supplying apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rapidly move a slide base and to smoothly move base by always maintaining a load to be applied to the base in a prescribed direction. SOLUTION: An interval between an upper surface of a movable element 48 of a linear motor 14 and an upper fixing unit 47a is set to a seize slightly larger than the integral between the lower surface of the element 48 and a lower fixing element 47b. The load to be applied to the block 23 is always set to the prescribed direction. Its direction is set in a direction having stronger rigidity at a guide. Accordingly, if the slide base 12 is moved, when sliders 24a and 24b are guided by slide rails 43a and 43b and slid, the element 48 is sucked down. Thus, the rigidity of the guide becomes strong. The rapid movement of the base 12 is executed, and its smooth movement can be provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slide base on which a plurality of component supply units for sequentially supplying electronic components to a component pick-up position can be mounted, a machine base for slidably guiding the slide base, and a machine base. The present invention relates to an electronic component supply device comprising: a pair of stators mounted on a slide base; and a linear motor including a mover provided on the slide base so as to be interposed between the pair of stators at a predetermined interval.

[0002]

2. Description of the Related Art The prior art will be described with reference to FIG. The linear motor 114 includes a pair of upper and lower stators 147 a and 147 b fixed to the machine base 1111, and a mover 148 fixed to the slide base 112. The mover 148 has substantially the same length as the slide base 112, and is fixed to a side surface of the vertical portion 130 of the slide block 123. In this state, the upper surface of the mover 148 faces the upper stator 147a, and the lower surface faces the lower stator 147b at equal intervals (air gap). That is, the mover 148 and the upper and lower stators 147a, 147
7b is opposed to the top and bottom, and the linear motor 114 as a whole is
Is composed.

That is, the upper surface of the mover 148 and the upper stator 147
The gap between the magnet and the lower stator 147b is equal to, for example, 1 mm to cancel the magnetic attraction of the magnet.

[0004]

However, due to the size of the parts to which the mover and the stator are attached and the variation in the assembly, actually, in the range of the movement stroke of the slide base 112, the two distances do not become equal. Either may be slightly larger, or the spacing of the other may be larger or smaller depending on the location.

[0005] Therefore, the load applied to the slide block 123 also fluctuates in the vertical direction.

Accordingly, an object of the present invention is to make the load applied to the slide base always in a fixed direction, thereby achieving high-speed movement of the slide base and smooth movement.

[0007]

Means for Solving the Problems For this reason, the first invention provides
A slide base capable of mounting a large number of component supply units for sequentially supplying electronic components to a component pick-up position, a machine base for slidably guiding the slide base, a pair of stators attached to the machine base, and a pair of stators; A linear motor composed of a movable element provided on the slide base so as to be sandwiched at a predetermined interval by a stator; The predetermined interval is set to be larger than the other predetermined interval.

[0008] The second invention is characterized in that larger than the other predetermined interval of the first predetermined distance to place the load applied to the slide base to the strong guiding rigidity direction.

According to a third aspect of the present invention, a pair of stators are provided above and below the movable element with a predetermined interval between the movable element and the movable element, and provided on a lower surface of the slide base. A slider, and a slide rail provided on the machine base so as to face the slider, wherein a lower surface of the mover and a lower portion of the stator are spaced from an upper surface of the mover and an upper stator. The interval is reduced.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A high-speed mounter equipped with an electronic component supply device according to one embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a side view of the high-speed mounter, and FIG.
FIG. 2 is an external perspective view of the periphery of the supply system. As shown in both figures, the high-speed mounter 1 comprises a supply system 3 for supplying an electronic component A,
And a mounting system 4 that mounts the electronic component on the substrate B. The supply system 3 includes an electronic component supply device (3).

The apparatus main body 2 includes an index unit 6 serving as a main body of a drive system, a rotary table 7 connected to the index unit 6, and a plurality (12) mounted on an outer peripheral portion of the rotary table 7.
) Mounting heads 8, and the rotary table 7 is intermittently rotated by the index unit 6 at an intermittent pitch corresponding to the number of mounting heads 8. When the rotary table 7 rotates intermittently, the suction nozzle 9 mounted on each mounting head 8 faces the supply system 3 and the mounting system 4 as appropriate, sucks the electronic component A supplied from the supply system 3, and then rotates to the mounting system 4. This is mounted on the substrate B transported and introduced into the mounting system 4.

The electronic component supply device 3 constituting the supply system includes:
A machine base 11 long in the front-rear direction, and four slide bases (supply tables) 12 slidably mounted on the machine base 11
A large number of tape cassettes (component supply units) 13 detachably mounted on each slide base 12;
And a linear motor 14 incorporated between each slide base 12. The four slide bases 12
The two sets are arranged as a set before and after the machine base 11 so that two sets of tape cassettes 13 alternately face the apparatus main body 2 via the slide bases 12 and 12 of each set. That is, two slide bases 12, 12 on each side on which a large number of tape cassettes 13 are mounted, respectively,
During the component supply operation by moving (sliding) to the position (2), the tape cassette 13 is exchanged for the next operation on the other two slide bases 12 and 12 at the home (origin) position. Done.

As shown in FIGS. 2 and 3, each tape cassette 13 is formed to be thin, and a large number of thinly formed tape cassettes 13 are mounted side by side on the upper surface of the slide base 12 with a narrow gap. Have been. In this case, each tape cassette 13 is positioned on the upper surface of the slide base 12, and is detachably mounted by operating a lever. The mounting head 8 (suction nozzle 9) of the apparatus main body 2 faces the tip of the tape cassette 13 mounted on the slide base 12 in order to suck the electronic component A. A carrier tape C loaded with electronic components A at a predetermined pitch is mounted on the tape cassette 13 in a state of being wound on a tape reel 16. At any time from the tape C, the suction nozzle 9 is set at the component take-out position.
It is adsorbed by.

The slide base 12 includes the left and right joining members 2.
It comprises an upper base block 22 and a lower slide block 23 positioned and fixed via 1a and 21b. The tape cassette 13 is mounted on the upper surface of the base block 22, and a pair of left and right sliders 24 a and 24 b is provided on the lower surface of the slide block 23. The base block 22 includes a horizontal portion 26 and an inclined portion 27.
The inclined portion 27 is disposed at a position where the tape reel 16 has escaped from the tape cassette 13 mounted on the horizontal portion 27.

The slide block 23 is formed integrally with the upper horizontal portion 29, the vertical portion 30, and the lower horizontal portion 31 so as to have a crank-shaped cross section. A part 32 is formed. The upper horizontal portion 29 supports the horizontal portion 26 of the base block 22 via one joining member 21a, and the rib portion 32 supports the inclined portion 2 of the base block 22 via the other joining member 21b.
7 is supported. The first slider 24a is fixed to the lower surface of the outer end of the upper horizontal portion 29, and the second slider 24a is fixed to the lower surface of the outer end of the lower horizontal portion 31.
b is fixed.

Further, on the lower surface of the outer end of the upper horizontal portion 29, an optical sensor 36 constituting a linear encoder 35 is vertically provided between the upper horizontal portion 29 and a scale 34 attached to the machine base 11. An end of a cable carrier (registered trademark) 38 that supplies a control signal and electric power to the linear motor 14 via a bracket 37 is connected to an upper surface of an outer end of the lower horizontal portion 31.
Reference numeral 39 in the figure is a photo interrupter,
This photo interrupter 39 is provided for each slide base 12.
Overruns the home (home return) position,
Detect this.

The machine base 11 is composed of a machine body 41 and a vertical block 42.
A first slide rail 43a with which the first slider 24a is engaged is attached.
A second slide rail 43b with which the second slider 24b engages is attached. In addition, the vertical block 42
An upper magnet base 44 extending horizontally is attached to the upper surface of the main body 41, and a lower magnet base 45 is attached to the upper surface of the main body 41 in correspondence with the upper magnet base 44.

The linear motor 14 includes a pair of upper and lower stators 47a, 47b fixed to the machine base 11, and a movable element 48 fixed to the slide base 12. Stator 4
7a and 47b are composed of upper and lower magnet bases 44 and 45 and upper and lower magnets 49 and 49, respectively. Upper magnet 49 of a pair of upper and lower magnets 49
Are fixed to the lower surface of the upper magnet base 44 downward, and the lower magnet 49 is fixed to the upper surface of the lower magnet base 45 upward. On the other hand, the mover 48 has substantially the same length as the slide base 12, and is fixed to the side surface of the vertical portion 30 of the slide block 23.
In this state, the upper surface of the mover 48 is provided with the upper stator 47a, and the lower surface thereof is provided with the lower stator 47b (air gap).
Confronted with the existence. That is, the mover 48 and the upper and lower stators 47a and 47b face up and down, and constitute the linear motor 14 as a whole.

Here, as long as the performance of the linear motor 14 is not impaired, the movable element 48 and the stator 47 are not damaged.
a, 47b are directly or indirectly attached to the components, ie, the slide block 23, the joining members 21a, 21b,
As long as the variation of the dimensions and assembly of the slide base 12, the machine base 11, the vertical block 42, the magnet bases 44 and 45 and the like can be absorbed, the distance between the upper surface of the mover 48 and the upper stator 47a is 1.2 mm, for example. The distance between the lower surface of the element 48 and the lower stator 47b is slightly larger than 0.8 mm, the load applied to the slide block 23 is always set in one direction, and the direction is set in the direction in which the rigidity of the guide portion is strong.

[0021] That is, the slider 24a, the 24b is intended to slide by being guided by the slide rails 43a, 43b, since the rigidity is stronger than upward toward the downward direction, load applied to the slide block 23 Is applied in a direction in which the sliders 24a and 24b, which are strong downwards, are pressed against the slide rails 43a and 43b.

Therefore, the movable element 48 is sucked downward, the rigidity of the guide portion is increased, and the slide base 12 can be moved at high speed and smoothly.

The mover 48 fixed to each slide block 23 is configured by winding an exciting coil around a magnetic structure (not shown), while the upper and lower stators 47a, 47b are arranged.
As shown in FIG. 4, upper and lower magnet bases 44,
A large number of magnets 49 are arranged in a row in the longitudinal direction of 45. In this case, a large number of magnets 49 are arranged at equal intervals with a minute gap 50 therebetween, and a resin 51 is molded in each gap 50. That is, the gaps 50 of the large number of magnets 49 are made of resin 51 so that the surfaces of the upper and lower stators 47a and 47b are flush with each other.
In it is molded.

Then, the operation shifts to the production operation. That is, the linear motor 14 is driven in a predetermined manner via a motor driver based on a production operation start command from a control device (not shown). Body 2
After the electronic component A is suctioned and taken out by the mounting head 8 (suction nozzle 9), the mounting head 8 (suction nozzle 9) that has sucked the electronic component A by the rotation of the rotary table 7 is transferred onto the substrate B, and At the desired mounting point of the electronic component A
Attach. Hereinafter, the component mounting operation is continued similarly.

Here, the distance between the upper surface of the mover 48 of the linear motor 14 and the upper stator 47a is made slightly larger than the distance between the lower surface of the mover 48 and the lower stator 47b, so that the load applied to the slide block 23 is always one. Direction, and the direction is set in the direction in which the rigidity of the guide portion is strong, so that the slider 24a,
When the slide 24b is guided by the slide rails 43a and 43b and slides, the mover 48 is sucked downward, the rigidity of this guide portion is increased, the followability of the linear motor 14 is improved, and the slide base 12 moves at high speed. In addition to smooth movement, it is possible to achieve smooth movement.

In this embodiment, the case where the electronic component supply device is used for a high-speed mounter has been described, but it goes without saying that the present invention can be applied to a multi-function mounter. Also,
This electronic component supply device is also applicable when a bulk cassette or the like is mounted instead of the tape cassette.

[0027]

According to the present invention, the load applied to the slide base is always in a fixed direction, so that the slide base can be moved at high speed and smoothly.

[Brief description of the drawings]

FIG. 1 is a side view of a high-speed mounter provided with an electronic component supply device according to an embodiment of the present invention.

FIG. 2 is an external perspective view of an electronic component supply device according to one embodiment of the present invention.

FIG. 3 is an enlarged cross-sectional view of the electronic component supply device according to one embodiment of the present invention.

FIG. 4 is a sectional view around a stator of the electronic component supply device according to the embodiment of the present invention.

FIG. 5 is an enlarged sectional view of an electronic component supply device showing a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 High-speed mounter 2 Mounting main body 3 Electronic component supply apparatus (supply system) 9 Suction nozzle 11 Machine stand 12 Slide base (supply table) 13 Tape cassette (component supply unit) 14 Linear motor 24a, 24b Slider 43a, 43b Slide rail 47a, 47b Stator 48 Mover

Continued on the front page (72) Inventor Haruhiko Yamaguchi 2-5-5 Keihanhondori, Moriguchi-shi, Osaka F-term in Sanyo Electric Co., Ltd. 5E313 AA03 AA11 AA15 CC01 DD01 DD11 DD31 DD50 EE02 EE24 EE25 FG02 FG10 5H641 BB06 BB18 GG03 GG15 GG26 GG29 HH02 HH05 HH06 JA03 JA09

Claims (3)

[Claims] 1. A slide base on which a plurality of component supply units for sequentially supplying electronic components to a component pick-up position can be mounted, a machine base for slidably guiding the slide base, and a pair of fixed members attached to the machine base And a linear motor comprising a mover provided on the slide base so as to be interposed between the stator and the pair of stators at a predetermined interval, wherein the load applied to the slide base is changed in one direction. An electronic component supply device, wherein one of the predetermined intervals is larger than the other of the predetermined intervals so as to be placed. 2. A slide base on which a plurality of component supply units for sequentially supplying electronic components to a component pick-up position can be mounted, a machine base for slidably guiding the slide base, and a pair of fixed members attached to the machine base. And a linear motor comprising a mover provided on the slide base so as to be sandwiched at a predetermined interval by the stator and the pair of stators, wherein a load applied to the slide base is reduced by a guide rigidity. An electronic component supply device, wherein one of the predetermined intervals is made larger than the other predetermined interval so as to be placed in a strong direction. 3. A slide base on which a plurality of component supply units for sequentially supplying electronic components to a component pick-up position can be mounted, a machine base for slidably guiding the slide base, and a pair of fixed members attached to the machine base. And a linear motor comprising a mover provided on the slide base so as to be interposed between the mover and the pair of stators at a predetermined interval, wherein the mover is disposed above and below the mover. A pair of stators provided at a predetermined interval from the mover, a slider provided on the lower surface of the slide base, and a slide rail provided on the machine base so as to face the slider. An electronic component supply device, wherein the distance between the lower surface of the mover and the lower stator is smaller than the distance between the upper surface of the mover and the upper stator.