JPS61289696A - Part attitude normalizer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is a machine that picks up electronic parts and mounts them in a predetermined place, and which has a function of correcting the suction position of electronic parts by recognition. In the electronic component automatic mounting machine with
The present invention relates to a component posture regulating device that directly regulates the posture of a sucked electronic component using physical force.

Conventional technology As a conventional example, QFP (
An explanation will be given using a mounting machine for electronic components with four-way leads (hereinafter abbreviated as QFP), that is, a QFP mounting machine with recognition.

FIG. 4 is a diagram schematically showing the main parts thereof. The suction nozzle 1 is attached to the tip of a main body arm 2, and can be moved three-dimensionally by this main body arm 2. The suction nozzle 1 is responsible for the main operation of this mounting machine, which is to suction the QFP 3 and mount it at a predetermined location.

Next, the QFPs 3 are arranged and housed in the component supply section 4. However, the dimensions of the recess 6 in which the components of the component supply section 4 are stored are designed to have some leeway in order to facilitate loading and unloading the components. For this reason, the QFP 3 is likely to jump inside the recess 6 when the component supply section 4 moves or due to vibrations of the entire machine.

As a result, there were variations in the posture of the 90FP3 due to adsorption, so some kind of correction was required before installation.

Here, it is thought that the movement of the QFP 3 within the recess 6 is mainly a rotational movement around an axis passing through the center of gravity and perpendicular to the package plane. Therefore, as a correction operation, QF
What is necessary is to measure the rotational deviation angle of P3 and correct it by rotation.

Conventionally, based on this theory, QFP3 was once set to V! Bring it up to the professional camera e, and use the recognition camera 6 to determine its position from the shadow created by the horizontal part of the lead wire tip of the QFP 3 by the light from the light source 7! The angle to be rotated was calculated based on the information obtained by the intelligence unit 8. For rotational correction, a correction motor 9 directly connected to the suction nozzle 1 is used to correct the rotation of the QFP' for each suction nozzle 1 to the correct posture.

Problems to be Solved by the Invention However, the above-mentioned method alone cannot deal with misalignment of the QFP3 due to causes other than rotation, and problems arise such as incorrect attachment due to misrecognition or machine stoppage due to inability to recognize the QFP3. was.

As an example of misrecognition, as shown in FIG. 6, QFPlo, which should be at the position of the broken line, is shifted parallel to the position of the solid line. This can be a case of confusion. Also, Il
! ! An example of an unrecognizable situation is when the QFP adsorption deviation is so large that it goes out of the field of view of the recognition camera.

Therefore, the present invention aims to correct the suction misalignment of QFP and electronic components, which could not be compensated for by conventional rotational correction alone, to improve component mounting accuracy of automatic electronic component mounting machines, and to reduce downtime. It is.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a regulating claw for regulating the posture of the attracted electronic component within a certain range, and a plurality of regulating claws connected to each other to carry out the regulation. To provide a component posture regulating device comprising a connecting part from which a regulating claw can be detached so as not to interfere with a suction operation when the component position is not bent.

Function The function of the present invention will be described below. First of all, what is a regulation claw?
Directly contact the side of the package of the electronic component that has been sucked,
It has the role of correcting misalignment with a certain force. Therefore, at least two or more act with the same timing. Also,
The connecting portion connects the plurality of regulating claws and has the role of keeping the regulating claws away from the suction nozzle during times other than correction operations.

In the assembled state, these are attached to the suction nozzle base of the main body arm so as to surround the suction nozzle, and move as the suction nozzle moves up and down. First, when the suction nozzle is at its upper limit.

At this time, the outer surface of each regulating claw hits a circular tube around the suction nozzle, for example, a light source container, thereby closing the suction nozzle. Next, when the suction nozzle is at its lower limit, the regulating claws go down below the circular pipe object, so there is no external restraint, and on the other hand, each regulating claw spreads outward due to the function of the connecting part. It has become.

Therefore, in terms of operation, when the suction nozzle descends to suction a component from the component supply section, each regulation claw spreads outward and does not interfere with the suction of the component, and as the suction nozzle rises, As the suction nozzle closes, it presses down the suction part from its surroundings with a constant pressure that is the upper limit of the suction nozzle's rise. At this time, if the mounting angle of the regulating claw is adjusted in advance according to the part, the part will be regulated to the desired posture when the suction nozzle reaches its upper limit.

Thereafter, when the component is to be mounted in a predetermined location, the suction nozzle is lowered, so that each regulation pawl opens outward and does not interfere with the mounting operation.

Embodiment Hereinafter, an embodiment using the present invention will be described using a QFP mounting machine with recognition.

First, FIG. 1 shows an example embodying the present invention. This is when the standard claw is used in two-side assembly, and the standard claw base 13
, regulation claw bin 14, regulation claw palm 6, regulation claw pressure part 16,
It consists of a connecting pin 17, a connecting spring 18 and a connecting nut 19. The regulating claw base 13 and the regulating claw body 16 are connected by the regulating claw pin 14 and move smoothly. Also, the regulation claw body 16
and the regulating pawl pressure section 16 are fixed. Regulation claw pressure part 1
As the material of e, a resilient material such as acrylic resin is used, and appropriate metals are used for the other members. The members assembled in this way are called regulating claws. A connecting pin 17 connects these two regulating claws.
The connecting nut 19 and the connecting spring 18 press the regulating pawl against the connecting nut 19 and hold it in the outward opening direction at all times. The above three connecting members are called a connecting portion.

Now, how these move when they are integrated and attached to the mounting machine main body will be explained with reference to FIGS. 2 and 3. Here, in reality, two sets of the above-mentioned regulating claws are used to press down the component from four directions, but for convenience, only the - set is depicted in the figure.

First, the suction nozzle 2o is transferred from the component supply section 21 to the QFP 22.
Figure 2 shows an attempt to absorb . As shown in the figure, since the regulating claw 23 is not constrained by the surroundings, it spreads outward by the action of the connecting portion 24 and does not hit the QFP 22 before suction.

Next, when the suction nozzle 20 has risen completely. This results in a state as shown in FIG. At this time, the regulating claw 23 hits the circular tubular ring that is the light source 28 of the g-identification camera 26, closes inward, and applies pressure to the side surface of the package of the QFP 22. Then, even though the QFP 22 is attracted, it shifts to a predetermined posture and is regulated.

As described above, by using the component posture regulating device consisting of a regulating claw and a connecting portion as in the present invention, the posture of the suction component can be forced to a certain range with a simple device that does not require an active part, and it is possible to prevent recognition. This can reduce the problem of false recognition.

Effects of the Invention As described above, the present invention has a regulating claw that regulates the posture of a sucked electronic component within a certain range by physical force, and a plurality of regulating claws that are connected to each other, so that the sucking operation can be performed when adjustment is not performed. Although it is a simple mechanism consisting of a connecting part that has the role of separating the regulating claw to prevent interference, it can drastically reduce problems such as unrecognizability and misrecognition, and depending on the part, the part posture regulation of the present invention can be used. There are some items that can be installed with only rough adjustments made by the device, so in this case a faster installation operation that does not require a recognition operation can be realized.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a component posture regulating device according to an embodiment of the present invention, FIG. 2 is a sectional view of a QFP mounting machine with recognition, FIG. 3 is a sectional view of the same in a state in which a component is being regulated, The figure is a sectional view of a conventional QFP mounting machine with recognition, and FIG. 6 is a schematic explanatory diagram showing QFP positional deviation. 1... Suction nozzle, 2... Body arm, 3... QFP, 4... Parts supply section,
5... Recess of parts storage section, 6... Recognition camera, 7... Light source, 8... Recognition unit, 9... Correction motor, 1o...
QFP at ideal position, 11...Horizontal portion of the lead wire tip to be recognized, 12...Horizontal portion of the lead wire tip that is incorrectly recognized, 13...Regulation claw base, 14.・
...Regulation claw bin, 16...Regulation claw body, 1
6...Regulation claw pressure part, 17...Connection bottle, 18...Connection spring, 19...Connection nut, 2o...Adsorption Nozzle, 21...
・Parts supply department, 22...QFP, 23...
...Regulation claw, 24...Connection part, 25...
・Recognition camera, 26...Light source. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 13 - Regulation Jishu f4-, Jin 15-= # Group Toy 6-,, Noj Santoji f7---Lie Jt Pi fδ-1-n ノ(Key 9-1-li) 11zo" Figure 3

Claims (1)

[Claims] A suction nozzle that picks up electronic components and transports them to a predetermined position, a component supply unit that aligns and prepares the electronic components, and a part that checks whether the electronic components being sucked are in the correct orientation. a recognition camera; a light source that is attached around the suction nozzle and sends a projected image of the electronic component to the camera; a recognition unit that determines a deviation in the suction posture of the electronic component based on the image recognized by the camera; In a component posture adjustment device of an automatic electronic component placement machine with recognition, which has a correction motor that rotates the electronic component around the suction nozzle axis to correct the amount of deviation, This component posture regulating device is composed of a regulating claw for regulating the posture of a component within a certain range, and a connecting part that connects a plurality of the regulating claws and detaches the regulating claws so as not to interfere with the suction operation when the regulating claws are not being adjusted.