JPH02132896A - Component mounting method - Google Patents

Abstract

PURPOSE:To improve work efficiency in mounting of components by a method wherein a mounting sequence of the components is alternatively, and inversely changed by each board. CONSTITUTION:A movable support table 31 advances from right to left as moving and stopping intermittently in accordance with a mounting sequence. The tenth component feeding unit 32 reaches to a component mounting station 46 and components are mounted on a unit board 12a. A mounting operation for the next board 12b starts from the tenth mounting position and takes place in a reverse sequence, the support table 31 returns to a starting point as moving rightward and stopping intermittently from the position that it makes the 10th unit 32 stopped at the station 41. A mounting operation for the board 12b whose last mounting position is No.1 is finished and a mounting operation for a substrate 12c starts from a mounting position 1. A mounting operation follows as its mounting sequence is alternately and inversely changed by each board, so that time lost due to the waiting for return can be eliminated and consequently a mounting operation is shortened in time and improved in work efficiency.

Description

[Detailed Description of the Invention] ω Industrial Field of Application This invention relates to a method for mounting a large number of components on one board, and can be applied to electronic circuit board assembly processes, etc.

(b) Prior Art A typical example of work in which a large number of parts are mounted on a single board can be seen on an electronic circuit board assembly line. The size of components tends to be smaller, and the density of component mounting is increasing proportionally, so that most component mounting is now carried out by specialized automatic machines. Now, in such an automatic machine, in order to supply a wide variety of parts at precise timing, a plurality of parts supply units are arranged on a movable support base, and this movable support base is moved according to the mounting sequence. In most cases, desired component supply units are sequentially stopped at a component supply station. An example of this can be found in Japanese Unexamined Patent Publication No. 142799/1983. The usual way of arranging component supply units is to line up component supply units containing predetermined components from one end to the other according to a mounting sequence.

e9 Problems to be Solved by the Invention In the component supply device 1 having the above configuration, when there are many types of components to be mounted, a large number of component supply units must be lined up, and the entire device becomes long. Therefore, if you start supplying from the component supply unit located at one end, and after reaching the other end, you try to supply the next board again from the first component supply unit, the movable support base will be turned back. The problem was that it took a lot of time, resulting in a lot of lost time. This book attempts to solve this problem.

(d) Means for Solving the Problems In the present invention, after a predetermined number of components are mounted on one board in a predetermined order, the parts are mounted on the next board in the reverse order. .

(E) Effect According to the above procedure, the movable support stand remains in place after the completion of component mounting on one board until the start of component mounting on the next board. Therefore, no loss occurs due to the return of the movable support, and work efficiency is improved.

(f) Examples An embodiment of the present invention will be described based on FIGS. 1 to 5.

Figure 4 shows component mounting device 2 used for assembling electronic circuit boards.
This is a schematic representation of the layout of No. 1. 22 is a suction device, 28 is a component supply device, 24 is a supply side substrate transfer device, 25 is a storage side substrate transfer device, and 26 is a substrate positioning device.

The board positioning device f1126 is mainly composed of an X-Y table, and receives the board l1 from the supply side board transfer device 24, and sequentially positions the parts mounting parts of the board l1 at work points. After all the required parts are mounted, the board positioning device 26 delivers the board 11 to the storage-side board transfer device 25.

The component supply device 2B has a plurality of component supply units 82 arranged on a movable support base 81 that moves linearly.

At present, tape, macazine, bulk hopper, etc. are often used as a part supply method, and any of these methods may be used. The suction device 22 includes a plurality of mounting heads 36 provided around the periphery of a rotary index table 85. As shown in FIG. 2, in the embodiment, a total of lθ mounting heads 36 are arranged, and each mounting head 86
has a suction collet 87 shown in FIG. As the rotary index table 85 rotates, each mounting head 36 moves to 10 work stations. rotations in sequence. A work station that is a contact point between the mounting head 36 and the component supply device 28 (in FIG. 2, the mounting head 86 with identification code A is located) is the component supply station 41, and the mounting head 86 and the board positioning device 26 The work station (where the mounting head 36 with identification code F is located in FIG. 2) is the component mounting station 46. The suction collet 87 is attached to the component supply unit 32 at the component supply station 41.
toward the component l5 in the component mounting station 46.
In each step, a downward motion is performed toward the substrate 11. In any of the work stations from the component supply station 41 to the component mounting station 46, a component position adjustment device (2) for centering and angle adjustment of the component 15 sucked by the suction collet 87 is arranged.

Figure 4 shows the control system of the component mounting device 21. Reference numeral 51 denotes a control section composed of an arithmetic processing section 52 and a memory 53. The control unit 5l includes an adsorption device 2? , parts supply device 23
, the board transport devices @24 and 25, and the board positioning device 26, as well as a component positioning device 54, a data input section 55, and a keyboard 56 are connected via an input/output interface 57.

When a dispenser for applying solder paste for fixing components, adhesive, etc. to the board 11 is incorporated into the device, this dispenser 58 is also connected in the same way.

In this model, parts are installed in the following order.

The board 1l shown in FIG. 1 connects a plurality of unit boards,
It is a type of so-called multi-panel board that is divided when the soldering of components is completed, and unit boards 12 of the same standard are divided into 8 parts.
It is shaped like a combination of sheets. It is assumed that ten parts of different types are mounted on each unit board 12.

For convenience of explanation, among the two boards 11 drawn in the figure,
An identification code a is added to the board 11 on the right, that is, the one on which components are mounted first, and the one on the left, that is, the board 11 on which components are mounted next! Add identification code b to ■. Similarly, the unit boards 12 constituting each board 1111, 1lb are also given identification codes a/-f. Further, in FIG. 2, identification codes 1-10 are attached to ten component supply units 32 arranged in order from the left. Identification code 1~
Reference numeral 10 indicates the type of component, and in FIG. 1, the location where the component is mounted. Now, in the younger brother figure 1,
First, component mounting is started from the unit board 12a, and here, l is the starting point. Movable support stand 31
follows the mounting sequence from right to left in FIG. 2, repeating movement and stopping.

When the IOth component supply unit 82 reaches the component supply station 41, the movable support stand 81 stops there.

When the mounting head 36 that has picked up the tenth component reaches the component mounting station 46 and attaches the component to the unit board 12m, the work on the unit board 12a comes to an end. Next, work on the unit board 12b is started, and this time, the mounting progresses backwards from the 10th mounting location. The movable support stand 81 returns from the state in which the IOth component supply unit 32 was stopped at the component supply station 41 by repeatedly moving and stopping rightward in FIG. 2. Unit board 1 with mounting point l as the last
When the work on unit board 2b is completed, mounting on unit board 12c starts from mounting location 1. Thereafter, in the same manner, the unit board 12d is mounted from the mounting location 10, the unit board 12e is mounted from the mounting location 1, and the unit board 12f is
For these, the mounting is started from the mounting location IO. Although it depends on the operating speed of each part, it takes a considerable amount of time to complete a series of operations such as handing over the board 11a on which parts have been mounted to the storage-side board transport device 25 and receiving 1 lb of board from the supply-side board transport device 24. If so, it is also possible to return the movable support base 31 during that time and start mounting components on the unit board l2d from the mounting location 1.

Other embodiments are shown in FIGS. 6 to 8. Here, two substrates lla, ! are placed in a large substrate positioning device 26'. lb
While mounting components on the board tta, a dispenser 58 supplies an adhesive substance (solder paste, adhesive) to the board 1lb. On the board 1lb, the adhesive substance adheres to the parts corresponding to the places where components are being mounted on the board t. There is no need to return the component supply device to the original position one by one when starting the mounting work on the next board after finishing the mounting operation, and there is no loss time waiting for the component supply device to return to its original position. In the case of multi-panel boards, where the time interval from the end of one work to the start of the next work is short, the time-saving effect provided by Masaaki Moto is particularly remarkable.

[Brief explanation of the drawing]

FIG. 1 is a top view of a board showing the component mounting procedure according to the present invention, FIG. 2 is a top view of the main parts of a component mounting device that performs the component mounting work of FIG. partial front view,
FIG. 4 is a top view showing the overall layout of the component mounting device, and FIG. 5 is a block diagram showing the control system of the component mounting device. FIG. 6 and subsequent figures show other configuration examples to which the present invention is applied. FIG. 6 is a top view showing a board on a board positioning device, and FIG. 7 is a main part of a component mounting device corresponding to FIG. 2. The top view, FIG. 8, is a front view of components of the component mounting device corresponding to FIG. 8. DESCRIPTION OF SYMBOLS 11... Board, 15... Components, 81... Movable support stand, 32... Components supply unit, 41... Components supply station.

Claims (1)

[Claims] (1) A movable support base supporting a plurality of component supply units is moved according to a mounting sequence, and a group of component supply units are sequentially stopped at a component supply station to supply a predetermined number of components to be mounted on a board, A component mounting method characterized in that after a predetermined number of components are mounted on one board in a predetermined order, the parts are mounted on the next board in the reverse order.