JPH0446868B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electronic component mounting apparatus for mounting chip-type electronic components onto a printed circuit board that has a complicated external shape or is made of soft material and is difficult to transport.

Conventional configurations and their problems Figures 1 and 2 show specific examples of conventional board positioning when mounting chip-type electronic components on a complex-shaped board or flexible printed circuit board (hereinafter referred to as a board). It was done in a way that showed that.
1 in FIG. 1 is a printing machine that prints cream solder on the patterned surface of a substrate 2. The substrate 2 is positioned according to the pattern of the mask 3 of the printing machine 1, and is vacuum-suctioned through a hole 5 made in the base 4. Fixed and printed. Reference numeral 6 in FIG. 2 is an electronic component mounting machine, which places the board 2 removed from the printing machine 1 on a pallet 7, fixes it with a magnet 8, etc., and positions it with an X-Y table 9 while mounting the chip-shaped electronic component 10.
Implement.

However, in the above configuration, the substrate 2
The positioning method is different between printing machine 1 and mounting machine 6,
This has the disadvantage that the printing machine 1 and the electronic component mounting machine 6 cannot be configured as a line system.

Purpose of the Invention The present invention addresses the above-mentioned drawbacks and provides an electronic component mounting apparatus that unifies the positioning of printed circuit boards and facilitates automation of the mounting process in accordance with the intended use of the equipment that makes up the line. be.

Structure of the Invention The present invention has a through hole that penetrates vertically within the range where it comes into contact with a printed circuit board placed on the upper surface, and a pallet that can hold the printed circuit board in a predetermined position and transport it integrally. At least two base bodies each having a flat surface in surface contact with the lower surface and a through hole having one opening at approximately the same position as the lower opening of the through hole of the pallet, and which are movable up and down. a vacuum generator connected to the other opening of the through hole of each base body and vacuum suctioning the printed circuit board through the through hole of the base body and the through hole of the pallet; and a conveyor that conveys the pallet between each base body. , a stopper that stops the pallet conveyed by the conveyor at a position where the through holes between the pallet and the base body coincide, and the printed circuit board placed on the pallet is fixed by suction in each base body. By configuring the pallet to carry out the desired work on the pallet, it is possible to fix the pallet that holds and transports the printed circuit board in a predetermined position by vacuum suction, and the printed circuit board is also positioned via the pallet. Therefore, it is possible to unify the positioning of printed circuit boards for equipment with different processing purposes (for example, a printing machine and an electronic component mounting machine), and the unique feature of this method is that it is possible to easily automate the line system because printed circuit boards can be transferred while being placed on a pallet. have an effect.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 3 is a conceptual diagram showing the configuration of an electronic component mounting apparatus in an embodiment of the present invention.

Reference numeral 11 denotes a magazine type printed circuit board storage device, which stores a pallet 12 on which circuit boards 2 are placed on a shelf-like rack. 1 is a printing machine, and 6 is an electronic component mounting machine. Reference numeral 13 denotes a reflow oven, which melts and solidifies cream solder to solder the chip-type electronic component 10 to the printed circuit board 2. 14
is a magazine-type printed circuit board storage device that stores completed printed circuit boards 2, and a pallet 12
The system is configured such that the substrates 2 placed on the substrates 2 are sequentially sent to each device by a conveyor 15.

FIG. 4 is a perspective view showing a specific example of the pallet 12. The pallet 12 is provided with holes 16, and by vacuum suction from the bottom surface, the holes 16 become vacuum paths and the substrates 2 are fixed. 17 is a pin that prevents the board 2 from shifting in the horizontal direction;
Moreover, it is lower than the thickness of the substrate 2, and does not come into contact with the mask 3 shown in FIG. 1 during printing.

FIG. 5 shows an example of positioning the pallet 12 in the printing press 1. The base 4 can move up and down by a cylinder 18, lifts the pallet 12 stopped by the stopper A from the conveyor 15, brings it into contact with the mask 3 of the printing machine 1, and connects the flow path 19 and vacuum generator (not shown). As a result, the substrate 2 is suctioned and fixed via the pallet 12.

Figure 6 shows pallet 1 in electronic component mounting machine 6.
2 is an example of positioning. Electronic component mounting machine 6
-The Y table 9 is equipped with the same base 4 as the printing machine 1, and the substrate 2 is suctioned and fixed via the pallet 12 by the same operation.

As described above, according to this embodiment, it is possible to suction and position a board using the same pallet in a printing machine or an electronic component mounting machine using a pallet provided with holes.
In addition, by connecting each device with a conveyor, a line system is created, which is effective in increasing production efficiency and saving labor.

Effects of the Invention As described below, the present invention has a through hole that penetrates in the vertical direction within the range that contacts the printed circuit board placed on the upper surface, and holds the printed circuit board in a predetermined position and is integrated. physically transportable pallets;
The pallet has at least two flat parts that are in surface contact with the lower surface of the pallet, and a through hole that has one opening at approximately the same position as the lower opening of the through hole of the pallet, and that is movable up and down. A vacuum generator is connected to the other opening of the through-hole of each base body and vacuum-chucks the printed circuit board through the through-hole of the base body and the through-hole of the pallet, and the pallet is conveyed between each base body. It consists of a conveyor and a stopper that stops the pallet conveyed by the conveyor at a position where the through holes between the pallet and the base body coincide, and the printed circuit board placed on the pallet is fixed by suction on each base body. By configuring the system so that the desired work can be performed on printed circuit boards, the electronic component mounting process can be performed in line by connecting devices such as a printing machine and an electronic component mounting machine using conveyors. Yes, the effect is great.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a printing machine using a conventional printed circuit board positioning method, FIG. 2 is a side view of a mounting machine using a conventional printed circuit board positioning method, and FIG. 3 is a printed circuit board positioning apparatus according to an embodiment of the present invention. FIG. 4 is a conceptual diagram showing an example of the configuration of a line system used, FIG. 4 is a perspective view of a pallet of an electronic component mounting apparatus in an embodiment of the present invention, and FIG. 5 is a diagram showing an electronic component mounting apparatus in an embodiment of the present invention. FIG. 6 is a sectional view of an electronic component mounting machine using an electronic component mounting apparatus according to an embodiment of the present invention. 1... Printing machine, 2... Printed circuit board, 4... Base, 5... Hole, 6... Electronic component mounting machine, 7...
Pallet, 8... Magnet, 12... Pallet, 15... Conveyor, 16... Hole, 17... Pin, 18... Cylinder, 19... Channel.

Claims (1)

[Claims] 1. It has a through hole that penetrates in the vertical direction within the range where it comes into contact with the printed circuit board placed on its upper surface, so that the printed circuit board can be held in a predetermined position and transferred as one unit. a pallet, a flat portion in surface contact with the lower surface of the pallet, and a through hole having one opening at approximately the same position as the lower opening of the through hole of the pallet,
and at least two base bodies that are movable up and down; a vacuum generator that is connected to the opening of the other of the through holes in each base body and vacuum-sucks a printed circuit board through the through holes in the base bodies and the through holes in the pallet; It consists of a conveyor that conveys the pallet between each base body, and a stopper that stops the pallet conveyed by the conveyor at a position where the through holes between the pallet and the base body coincide, and the pallet is placed on the pallet in each base body. An electronic component mounting apparatus configured to perform desired work on a printed circuit board while the printed circuit board is suctioned and fixed.