JPH05262A - Adhesive applicator - Google Patents

Abstract

PURPOSE:To keep a constant coating operation of an adhesive applicator for mounting electronic parts on a printed circuit board by switching the coating pitch of an adhesive automatically corresponding to the different sizes and pitches of the electronic parts. CONSTITUTION:Each of the pair of blocks 11 is equipped with a coating nozzle 12. A pitch-switching device comprizing a sliding shaft 13 holding the blocks 11 slidable, a shaft 14 on which a right-handed screw and a left-handed screw are fixed in parallel with the sliding shaft 13, and a driving device for the shaft 14 is installed so that the coating pitch of an adhesive 15 is switched automatically in order to keep a constant coating operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive applicator for adhering electronic parts of various sizes or pitches at predetermined positions on a printed circuit board.

[0002]

2. Description of the Related Art In recent years, in the field of inserting odd-shaped components in electronic components, electronic components of various sizes or pitches have to be dealt with in order to increase the automation rate.

Conventionally, for this type of electronic component, one adhesive application nozzle of a predetermined size is provided, and the adhesive application position is applied several times according to the size or pitch of the electronic component. It was common to apply it separately in two steps. The configuration will be described below with reference to FIG.

FIG. 4 is an overall view of mounting equipment provided with a conventional adhesive coating device. The mounting equipment has two heads, the first head 1 is provided with a nozzle 3 for applying an adhesive onto the printed circuit board 2, and the second head 4 is a chuck for mounting the electronic component 5 on the printed circuit board 2. Part 6
Is equipped with. The first head 1 and the second head 4 are adapted to be moved up and down by the cylinders 9 and 10 from the driving unit 7 via the belt 8.

The operation of the adhesive coating device constructed as described above will be described below.

By driving the cylinder 9 at a predetermined position on the printed circuit board 2, the first head 1 provided with the adhesive application nozzle 3 descends to apply the adhesive. At that time, electronic component 5
It is necessary to change the application position of the adhesive according to the size or pitch of the parts, and the application position is moved to perform the application in several times.

[0007]

However, in the adhesive coating device as described above, there is a problem in that the coating position must be moved in accordance with electronic components having various pitches and the coating must be performed several times. .

The present invention solves the above-mentioned problem. Even electronic components of various sizes or pitches can be automatically pitch-switched without changing the coating operation of the machine body to continue a constant coating operation. An object of the present invention is to provide an adhesive coating device that can be used.

[0009]

In order to solve the above problems, an adhesive applying apparatus of the present invention is provided with an adhesive applying nozzle in each of a pair of blocks, and a slide shaft for slidably holding the blocks. A shaft having a right-hand screw and a left-hand screw coaxially provided in parallel with the slide shaft, and a drive device for driving the shaft.

[0010]

According to the present invention, in the above-mentioned structure, the shaft provided with the right-hand screw and the left-hand screw on the same axis is rotated by the drive device according to the size or pitch of the electronic component, and each of the shafts provided on the pair of blocks is rotated. The pitch is switched between the adhesive coating nozzles to continue a constant coating operation.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An adhesive applying apparatus according to an embodiment of the present invention will be described below with reference to FIGS. In addition, the same numbers are used for the same components as those described in the conventional example,
The description is omitted. 1 and 2 show a specific configuration of an adhesive coating device according to an embodiment of the present invention.
The first head 1 is provided with a pair of blocks 11, and the tip ends of the blocks 11 are provided with adhesive application nozzles 12, respectively. FIG. 2 shows a pitch switching mechanism provided in the adhesive application nozzle 12, in which a pair of blocks 11 having the nozzle 12 are slidably held by a slide shaft 13, and a right screw and a left screw are coaxial. Shaft 1 formed on
4 is provided in parallel with the slide shaft 13.

The operation of the adhesive applicator having the above structure will be described below. By driving the cylinder 9, the first head 1 descends to a predetermined position on the printed board 2 to apply the adhesive. At that time, as shown in FIGS. 3A and 3B, the shaft 14 in which the right-hand screw and the left-hand screw are provided coaxially in accordance with the size or pitch of the electronic component 5
Is rotated by a driving device (not shown) to switch the pitch of the adhesive application nozzles 12 provided on the pair of blocks 11, thereby making it possible to apply adhesive to electronic components 5 of various sizes or pitches. The application position of 15 can be changed and a fixed application operation can be continued.

[0013]

As is apparent from the above description of the embodiments, the present invention provides a pair of blocks each provided with an adhesive coating nozzle, and a slide shaft for slidably holding the blocks, and a slide shaft parallel to the slide shaft. A shaft provided with a right-hand screw and a left-hand screw on the shaft and an adhesive application pitch switching device composed of a drive device for driving the shaft, so that the electronic components of various sizes or pitches can be machined. The adhesive application pitch can be automatically switched without changing the application operation of the main body, and a constant application operation can be continued.

[Brief description of drawings]

FIG. 1 is a perspective view of mounting equipment provided with an adhesive coating device according to an embodiment of the present invention.

FIG. 2 is a sectional view of a pitch switching device.

FIG. 3A is a side view showing an adhesive application position of an electronic component having a small pitch, and FIG. 3B is a side view showing an adhesive application position of an electronic component having a large pitch.

FIG. 4 is a perspective view of mounting equipment provided with a conventional adhesive coating device.

[Explanation of symbols]

 11 block 12 nozzle 13 slide shaft 14 shaft

Claims (1)

Claim: What is claimed is: 1. A pair of blocks are provided with adhesive application nozzles respectively, and a slide shaft for slidably holding the blocks, and a right screw and a left screw are coaxial with each other in parallel with the slide shaft. An adhesive application device comprising a shaft provided above and a drive device for driving the shaft.