JPH0529795A - Electronic part mounting apparatus, part attracting method, and part mounting method - Google Patents

Abstract

PURPOSE:To provide an electronic part mounting apparatus which is capable of speeding up a work and stably attracting an electronic part. CONSTITUTION:There is provided a rotary electronic part mounting apparatus which comprises a plurality of part attracting devices (only one illustrated in the figure) including nozzles 21, 22 each of which moves on the circumference of a rotary by being driven by a main shaft intermittently rotated and simultaneously attracts an electronic part, a roller cam mechanism for moving the nozzles 21, 22 along a roller groove 35 following the movement of the part attacting devices, and slide cams 33, 34 for separately and vertically moving the nozzles 21, 22 located in positions where the nozzles attract parts along longitudinal grooves 31, 32.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component mounting machine, a component suction method and a component mounting method using the same.

[0002]

2. Description of the Related Art In a conventional electronic component mounting machine, for example, ten component suction devices are arranged at equal intervals on a rotary circumference centered on a main shaft at positions where the circumference is divided into ten equal parts. The device has one nozzle for picking up parts. The main shaft performs intermittent rotation in which it pauses every 1/10 rotation, and each component suction device is at each stop position, as shown in FIG. 4, suction-regulation-nozzle rotation (posture detection) -mounting-defective product discharge-nozzle Rotation (return to origin) -nozzle change,
Repeat the work of.

The above movement will be described with reference to FIG. 1 is the main axis,
Reference numeral 2 is a spindle table, 3 is a component suction device fixed to the spindle table 2, and 4 is a nozzle that sucks an electronic component at its tip and mounts it on a printed circuit board. The nozzle 4 slides up and down in the component suction device 3, and although not shown here, an intake device and other mechanisms for producing a negative pressure for component suction are attached.
Reference numeral 5 is a roller directly connected to the nozzle 4, and 6 is a roller cam, which is a fixed object. When the main shaft 1 rotates, the roller 5 becomes the roller cam 6
The groove 4 moves up and down gently, and the nozzle 4 also moves up and down accordingly. Nozzle 4 with main shaft 1 stopped
When it is necessary to move up and down, for example, the roller cam 6 has a vertical groove 8 at the mounting position. A slide cam 9 (shown by diagonal lines) is inserted in the vertical groove 8. The slide cam 9 is driven by a mechanism (not shown) to slide up and down in the vertical groove 8, whereby the nozzle 4 also moves up and down.

[0004]

The process of sequentially adsorbing electronic components from the component supply unit and picking them up and mounting them on a printed circuit board tends to be speeded up. At the same time, standing adsorption or non-adsorption, which is called adsorption failure, occurs. There are various causes for this, but an important reason is that the adsorption time was shortened as the speed increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide an electronic component mounting machine having a component suction device for speeding up work and for stable component suction.

[0006]

In order to achieve the above-mentioned object, the component supply apparatus used in the electronic component mounting machine of the present invention has a plurality of nozzles which can be moved up and down independently at each station.

[0007]

With the above-mentioned means, a plurality of electronic components can be adsorbed by a plurality of nozzles by a single adsorption.
Even if the work efficiency is the same, the suction time can be extended several times more than usual, and the component suction failure is reduced.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The electronic component mounting machine of the present invention is driven by an intermittently operating main shaft and has a plurality of component suction devices each having a plurality of nozzles that move on a rotary circumference, and the plurality of nozzles are grooved as the component suction device moves. The rotary type is provided with a roller cam mechanism that moves along the vertical groove and a slide cam mechanism that individually moves the plurality of nozzles at the component mounting position up and down along the vertical groove. FIG. 1 is a perspective view of a component suction device 20 used in the present invention. There are two nozzles 21 and 22, which are not visible in this figure, but on the back side there are rollers 23 and 24 (corresponding to the roller 5 in FIG. 5 of the prior art example) connected to each nozzle. Nozzle 21,2
2 moves on the circumference of the rotary while performing the operation as shown in FIG. 2, but there is vertical movement at each position as required. FIG. 3 is a diagram for explaining the operation, and for simplicity, only one component suction device 20 is provided. The component suction device 20 moves along the outer circumference of the roller cam 30 on the rotary circumference. The rollers 23 and 24 on the back surface are fitted in the roller groove 35, and the nozzles 21 and 22 move along the roller groove 35 as the component suction device 20 moves. If necessary, slide groove 3 at the position of the station that stops by intermittent rotation
1, 32 are installed. The slide cams 33 and 34 inserted in the slide grooves 31 and 32 are driven by a mechanism (not shown) to move up and down in the slide grooves 31 and 32.
As a result, the nozzles 21 and 22 also move up and down. When the component suction device 20 is at the component suction position, the nozzles 21 and 22
Simultaneously moves downward and picks up parts at the same time. However, when in the component mounting position, the nozzles 21 and 22 individually move up and down to sequentially mount components. Therefore, the nozzle 2
Two parts are mounted while parts 1 and 22 are picking up parts, and even if the work tact is the same, the time allowed for picking work is twice as long as the case where there is one nozzle, Adsorption error is reduced.

[0009]

As is clear from the above description, since the component suction device used in the electronic component mounting machine of the present invention is provided with a plurality of nozzles, the components are suctioned if the work time for mounting the components is the same. Since the time that can be applied to the above becomes longer, it is possible to solve various problems such as standing adsorption, oblique adsorption, and non-adsorption that occur due to the short adsorption time.

[Brief description of drawings]

FIG. 1 is a perspective view of a component suction device having a plurality of nozzles used in an electronic component mounting machine of the present invention.

FIG. 2 is a schematic view showing the arrangement of a component suction device of the electronic component mounting machine of the present invention.

FIG. 3 is a diagram for explaining operations of a roller cam and a slide cam of the electronic component mounting machine of the present invention.

FIG. 4 is a schematic view showing the arrangement of a component suction device of a conventional electronic component mounting machine.

FIG. 5 is a diagram for explaining operations of a roller cam and a slide cam of a conventional electronic component mounting machine.

[Explanation of symbols]

20 Parts suction device 21 nozzles 22 nozzles 23 Laura 24 roller 30 roller cam 31 slide groove (vertical groove) 32 slide groove (vertical groove) 33 slide cam 34 Slide cam 35 roller groove

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shino Seno             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd.

Claims (4)

[Claims] 1. A plurality of component suction devices each having a plurality of nozzles that are driven by an intermittently operating main shaft and move on a rotary circumference, and the plurality of nozzles are provided along a roller groove as the component suction device moves. A rotary type electronic component mounting machine including a roller cam mechanism for moving the nozzles and a slide cam mechanism for individually moving the plurality of nozzles at the component mounting position up and down along a vertical groove. 2. The electronic component mounting machine according to claim 1, wherein the component suction device is installed such that the plurality of nozzles at the component suction position are parallel to the component supply unit. 3. A component suction method using an electronic component mounting machine according to claim 1, wherein a plurality of nozzles located at the component suction position simultaneously suction components. 4. The component mounting method using an electronic component mounting machine according to claim 1, wherein the nozzles at the component mounting position individually move up and down to mount the component.