JPH05226882A - Electronic part supply method in electronic part mounting device - Google Patents

Abstract

PURPOSE:To enable easy supplement operation and to eliminate the possibility of supplement omission by controlling an electronic part supply unit group consisting of a plurality of electronic part supply units as one unit. CONSTITUTION:When an electronic part is not attracted and held by a mounting head 40, the electronic part is attracted again. When the electronic part is not attracted to the mounting head 40 even if the repetition operation is performed fixed times, the electronic part supply unit is judged as 'out of part'. When an electronic part supply unit holding an electronic part of the same kind as the electronic part supply unit which is judged as 'out of part' exists in the same electronic part supply unit group 20 and the unit is not out of part, the electronic part supply unit is selected. Meanwhile, if the electronic part supply unit is also out of part, part supply from the electronic part supply unit group 20 is discontinued. Then, a control device selects an electronic part supply unit group 30 as a supply object unit of a part and a process is executed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of supplying electronic components in an electronic component mounting apparatus for sequentially picking up electronic components from a plurality of electronic component supply units by a mounting head and mounting them on a printed circuit board.

[0002]

2. Description of the Related Art In an electronic component mounting apparatus for automatically mounting electronic components on a printed circuit board in a predetermined order, a plurality of electronic component supply units are provided corresponding to the types of electronic components to be mounted. Has been. Then, the component mounting head having the component suction nozzle at the tip moves to the component unloading port of the electronic component supply unit holding the predetermined electronic component according to the preset component mounting sequence,
Therefore, the electronic parts are sucked and the mounting operation on the printed circuit board is performed.

By the way, in the conventional electronic component mounting apparatus,
An electronic component supply unit for the same type of electronic component,
One or a plurality of electronic components are prepared according to the number of electronic components to be mounted, and those electronic component supply units are installed on the main body according to the type and number of electronic components to be mounted. Therefore, the series of electronic component supply units installed on the main body is always involved in the component supply operation for each type of electronic component to be mounted, and one or a plurality of electronic component supply units having one type of electronic component When the electronic component supply unit runs out of components, the mounting operation is stopped each time, and a new electronic component is replenished to the electronic component supply unit that has run out of components.

[0004]

As described above, conventionally, whenever an electronic component supply unit having one type of electronic component runs out of components, the operation of the electronic component mounting apparatus is stopped and a new electronic component is installed. Since the components had to be replenished, there was a problem that the operation rate of the electronic component mounting device was low.

Further, although the electronic component supply unit can be detected by a retry function known in the related art, the component exhaustion occurs in any one of the electronic component supply units in any order irrespective of the arrangement of the units, and the time interval between them. Since the parts are out of order, each time a worker runs out of parts, the worker must replenish the electronic parts supply unit in which the parts have run out with electronic parts. Furthermore, if multiple electronic parts supply units run out of parts at the same time,
There was a risk of replenishment leakage, such as replenishing parts to one unit and restarting.

The present invention has been made in order to solve such a conventional problem, and can replenish parts without stopping the operation of the electronic component mounting apparatus, and the replenishment work is easy. Moreover, it is an object of the present invention to provide a method for supplying electronic components without the risk of replenishment leakage.

[0007]

In order to achieve the above object, an electronic component mounting apparatus having a plurality of electronic component supply units and sequentially taking out predetermined electronic components from these electronic component supply units and mounting them on a printed circuit board. In the electronic component supply method of the present invention, the electronic component supply unit group is formed by a plurality of electronic component supply units that respectively hold all types of electronic components to be mounted on the printed circuit board, A plurality of component supply unit groups are provided, one electronic component supply unit group is selected from the plurality of electronic component supply unit groups, and electronic components are sequentially taken out only from the selected electronic component supply unit group. It is mounted on a printed circuit board and the same type is used for any electronic component supply unit in the selected electronic component supply unit group. When it is no longer electronic components are,
There is a method for switching the electronic component supply unit group for taking out electronic components to another electronic component supply unit group, and sequentially taking out all kinds of electronic components from only this switched other electronic component supply unit group and mounting them on the printed circuit board, If necessary, two sets of the electronic component supply unit groups are provided, and one set is provided on each side of the printed circuit board transfer path so as to face each other. Further, the electronic component supply unit groups are each mounted on a single mounting substrate. It is as a method of placing.

[0008]

According to the above-described electronic component supplying method of the present invention,
If one of the electronic component supply units that was involved in the component supply operation runs out of components, the electronic component supply unit group that is prepared to face it is switched to the component supply operation. Continuing, the electronic component supply unit group in which the parts have run out, replenishes electronic components at once for all the electronic component supply units that make up the group,
Alternatively, the electronic component supply unit group is taken out together with the mounting substrate and the electronic component is replenished in a sufficiently large space outside.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. First, an outline of an embodiment of an electronic component mounting apparatus in which the electronic component supply method of the present invention is implemented will be described based on FIG.

The electronic component mounting apparatus shown in FIG. 1 includes a conveyor 11 provided on a transfer path 10 for a printed circuit board P and electronic component supply unit groups 20 and 30 for supplying electronic components.
And a mounting head 4 for picking up an electronic component from the electronic component supply unit group 20 or 30 and mounting it on the printed circuit board P.
It has 0 and.

The electronic component supply unit groups 20 and 30 are
The transfer path 10 is arranged so as to face each other on both front and rear sides. Each of the electronic component supply unit groups 20 and 30 includes a plurality of electronic component supply units 21 that respectively hold all types of electronic components to be mounted on the printed circuit board P.
a, 21b, ... (31a, 31b, ...). Here, the electronic components, which are particularly mounted in large numbers, are held in two or more electronic component supply units. Each of these electronic component supply units 21a, 21b, ... (31a,
..) are arranged side by side on each one of the mounting substrates 22 (32). Therefore, each of the electronic component supply unit groups 20 and 30 can be attached to and detached from the main body 1 of the electronic component mounting device together with the mounting substrate 22 (32).

In the electronic component mounting apparatus having such a configuration, after the printed circuit board P is arranged at a predetermined position by the conveyor 11, the electronic component supply unit group 20 of either one of them is arranged.
Alternatively, the mounting head 40 picks up an electronic component from 30 and mounts it on a predetermined position of the printed circuit board P.

Next, an electronic component supplying method in the above-described electronic component mounting apparatus will be described with reference to the flowchart of FIG. The electronic components are supplied from only one of the electronic component supply unit groups 20 or 30. Now, the electronic component supply unit group 20 on the rear side of the main body 1
When a command is issued from a control device (not shown) to supply electronic components from the controller (step (hereinafter, simply abbreviated as S))
1), the mounting head 40 performs the suction operation of the electronic component from the selected electronic component supply unit group 20.

That is, the electronic component supply units 21a, 21b, ... Provided in the electronic component supply unit group 20.
The electronic component supply unit holding the predetermined electronic component to be mounted is selected from among the above (S2), and the mounting head 40 is moved to above the component ejection port a of the electronic component mounting device. Then, the mounting head 40 descends from above the component take-out port a to perform the suction operation of the electronic component (S3).

Subsequently, it is detected whether or not the electronic component is suction-held by the mounting head 40 (S4), and if the electronic component is suction-held, the electronic component is mounted on the printed circuit board P (S5). On the other hand, when the electronic component is not sucked and held by the mounting head 40, the electronic component suction operation is performed again for the same electronic component supply unit. If the electronic component is not adsorbed by the mounting head 40 after performing the repeating operation (S6) a certain number of times (this is called a retry function), the electronic component supply unit determines that the component is out, and the control device To that effect is stored (S7).

Next, the same electronic component supply unit group 20
It is searched whether or not there is an electronic component supply unit having an electronic component of the same type as the electronic component supply unit determined to be "out of components" (S8). This is called an alternate function, and the control device is previously provided to the electronic component supply units 21a, 21b in the electronic component supply unit group 20,
Information such as "model of electronic component supply unit" and "type and size of electronic component possessed" is stored and retrieved.

As a result of the search, if there is an electronic component supply unit holding the same type of electronic component, it is further inspected whether the unit is "part out" (S9), and "part out". If not, the electronic component supply unit is selected (S10), and the mounting head 40 performs the electronic component suction operation (S3).

On the other hand, when the electronic component supply unit is also "parts out", the alternate function is further repeated,
If there is still no electronic component supply unit that holds the same type of electronic component and is not "parts out", then the component supply from the electronic component supply unit group 20 on the rear side of the main body is terminated, and the electronic component supply unit is terminated. The group 20 causes the control device to store a signal indicating that it is "out of parts", and displays it on a display means such as a signal light. When the electronic device supply unit group 20 receives a signal that a certain type of electronic part is “out of parts”, the control device selects the electronic part supply unit group 30 as a unit to which the parts are supplied (S11, S12), The steps S2 to S10 are executed, and the electronic component supply operation is performed without stopping the operation of the electronic component mounting apparatus.

However, the electronic component supply unit group 30 is
If the electronic component supply unit group 20 is already selected before it is selected, the electronic component supply unit group 30 is selected.
Is also "parts out", the operation of the electronic component mounting device is stopped and the operator is notified of that by an alarm or the like (S13). However, if electronic parts are replenished to the electronic parts supply unit group that is "out of parts" while the parts supply operation is being performed to the electronic parts supply unit group on one side, The electronic component supply operation can be continuously performed without stopping the component mounting apparatus.

The replenishment work of the electronic parts to the "parts out" electronic parts supply unit group is performed by the mounting substrate 22 (32).
Can be removed from the main body 1 and performed outside the machine. Therefore, the refilling work is performed in a sufficiently wide area without the mounting head or the robot for driving the mounting head.
There is no danger during replenishment work. In addition, electronic parts can be replenished not only for the electronic parts supply unit that is "out of parts" but also for all the units in the electronic parts supply unit group at once.
There is no need to search for a unit, and refilling work becomes easy, and there is no fear of refilling leakage. It should be noted that another electronic component supply unit group supplemented with electronic components is prepared in advance, and when the electronic component supply unit group mounted on the main body 1 becomes "parts out", the entire unit group is replaced. You can also do it. This makes it easier to replenish electronic components.

The present invention is not limited to the above-described embodiment, and various modifications can be made without changing the gist of the invention. For example, the electronic component supply unit group is not limited to two sets, and as many sets as necessary may be prepared and installed on the main body of the electronic component mounting apparatus, and the installation locations are also on both sides of the printed circuit board transfer path. The positions do not have to face each other. Further, the electronic component supply unit may be directly mounted on the main body without interposing the mounting substrate.

[0022]

As described above, according to the electronic component supply method of the present invention, the electronic component supply unit group consisting of a plurality of electronic component supply units is managed as one unit. When an "out of parts" occurs in an electronic component supply unit, it is sufficient to replenish electronic components for the entire electronic component supply unit group to which the unit belongs, and the effect of easy replenishment work and elimination of replenishment leakage Have. In addition, when a "parts out" occurs in one electronic component supply unit group, electronic components are supplied from another electronic component supply unit group, so the operating rate is improved without stopping the electronic component mounting device. Can be planned.

[Brief description of drawings]

FIG. 1 is a flowchart illustrating an electronic component supply method according to an exemplary embodiment of the present invention.

FIG. 2 is a schematic perspective view showing an example of an electronic component mounting apparatus for carrying out the method.

[Explanation of symbols]

10 ... Transfer path 11 ... Conveyor 20, 30 ... Electronic component supply unit group 21a, 21b, ..., 31a, 31b ... Electronic component supply unit 22, 23 ... Mounting board 40 ... Mounting head

Claims (3)

[Claims] 1. An electronic component mounting apparatus having a plurality of electronic component supply units, wherein predetermined electronic components are sequentially picked up from these electronic component supply units and mounted on a printed circuit board, and all kinds of electronic components mounted on the printed circuit board. An electronic component supply unit group of one unit is formed by a plurality of electronic component supply units each holding a component, and a plurality of electronic component supply unit groups of this one unit are provided, and the electronic component supply unit group of the plurality of sets A set of electronic component supply unit groups is selected from among them, and electronic components are sequentially taken out from only the selected electronic component supply unit group and mounted on a printed circuit board, and any one of the electronic component supply unit groups selected is selected. When there are no more electronic components of the same type in the component supply unit, an electronic component supply unit that takes out electronic components The electronic component mounting apparatus is characterized in that the electronic component supply unit group is switched to another electronic component supply unit group, and all kinds of electronic components are sequentially taken out from only the switched other electronic component supply unit group and mounted on the printed circuit board. Electronic parts supply method. 2. The electronic component supply method according to claim 1, wherein two sets of the electronic component supply unit groups are provided, and one set is arranged so as to face each other on both sides of the printed circuit board transfer path. Electronic component supply method in component mounting apparatus. 3. The electronic component supply method according to claim 2, wherein the electronic component supply unit groups are mounted on a single mounting board, respectively. ..