JPH03280587A - Automatic sealing device for printed wiring board - Google Patents

Abstract

PURPOSE:To automatically perform a step of impressing a character, a symbol, etc., on a printed wiring board by optically reading the position of the board on a belt conveyor, and impressing a predetermined character, symbol or the like by an ink jet printer. CONSTITUTION:A printed wiring board A is held fixedly between a positioning stationary bar 6 and a positioning movable bar 7 until it reaches under an ink jet printer 3. When the board A is conveyed under the printer 3, a marker, etc., formed previously on part of the board A is detected by a phototube, etc., information, etc., stored in advance is transmitted from a position data managing mechanism in an operation unit 7 to the printer 3 based on it, thereby performing impression at a predetermined position of the board A. The board A subjected to the impression is passed through an ultraviolet ray exposure unit 4, and the impressed part is cured by irradiation with ultraviolet rays.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for automatically stamping arbitrary symbols, characters, etc. on a printed wiring board.

[Prior Art] Conventionally, in the manufacturing process of printed wiring boards, there have been processes such as forming a predetermined wiring pattern, forming a solder mask to cover a part of the wiring (SR printing), and also forming component markings to determine the placement of circuit components. After going through processes such as formation (CM printing), arbitrary symbols, characters, etc. are stamped on the printed wiring board for purposes such as identification. However, conventionally, such stamping has been performed using the above-mentioned SR printing, 0
Since the top surface of the printed wiring board is uneven due to M printing, etc., this has been done manually using octopus printing or the like using an elastic material such as rubber.

Therefore, the production efficiency in this type of stamping process is low,
Moreover, the printing condition was not necessarily satisfactory.

[Problem to be solved by the invention]

SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide an automatic printing device for printed wiring boards that can automatically print characters, symbols, etc. on printed wiring boards.

[Means to solve the problem]

In order to solve the above-mentioned problems, the present invention sequentially loads printed wiring boards to be stamped onto a belt conveyor, optically reads the digit 1 of the printed wiring boards on the belt conveyor, and then prints the printed wiring boards to a predetermined value using an inkjet printer. We took measures to stamp letters, symbols, etc.

That is, the present invention provides an endlessly running belt conveyor;
a loading device disposed above one end of the belt conveyor for accommodating a plurality of printed wiring boards in a stacked state and loading the printed wiring boards one by one onto the belt conveyor; and a downstream side of the loading stocker. an inkjet printer disposed above the belt conveyor for printing predetermined characters on printed wiring boards with ultraviolet curable ink, and an ultraviolet light n-light device disposed above the belt conveyor downstream of the inkjet printer. and a receiving device disposed on a belt conveyor downstream of the ultraviolet i exposure device for receiving the printed wiring board after ultraviolet exposure from the belt conveyor, and at least between the input device and the inkjet printer. a mechanism for fixing the printed wiring board at a fixed position in the middle direction of the belt conveyor; and a mechanism for optically detecting at least a part of the printed wiring board in the fixed state of the printed wiring board; An automatic marking device for a printed wiring board, characterized in that it is equipped with a position data management mechanism for recognizing a place to be stamped on the printed wiring board based on the information and inputting the position data to an inkjet printer. This is what we provide.

[For production]

When the printed wiring board to be stamped reaches the marking process site using an inkjet printer, a predetermined part of the printed wiring board, for example, the front end, is optically detected and the marking position, marking character symbol, etc. are memorized in advance. This is input as information to a data processing device, and an inkjet printer automatically operates based on this information to make a predetermined mark at a predetermined position on a printed wiring board.

〔Example〕

Hereinafter, the present invention will be explained with reference to the illustrated embodiments.

1 and 2 are a side view and a plan view, respectively, schematically showing an automatic marking device for printed wiring boards according to the present invention. As shown in these figures, the automatic marking device for printed wiring boards of the present invention consists of a series of endlessly running belt conveyors la, lb, and lc, and a belt conveyor 1a disposed on the most upstream side, which is disposed above the upstream end. a loading device (or loading stocker) 2 for storing a plurality of printed wiring boards "80" in a stacked state and loading the printed wiring boards "A" one by one onto a heald conveyor la; An inkjet printer 3 is disposed above the downstream end of the belt conveyor 1a and is used to print a predetermined character on the printed wiring board "A" using ultraviolet curable ink, and an inkjet printer 3 is disposed above the downstream end of the belt conveyor 1b, and an inkjet printer 3 is disposed so as to cover approximately the center of the belt conveyor 1b from above. an ultraviolet exposure device 4 disposed at・7 cars) 5.

As shown in FIG. 3, a linear positioning fixing bar 6 is provided protruding along one side of the belt container between the input device 2 and the inkjet printer 3, and is further opposed to this. A linear positioning bar 7 is attached near the other side of the belt conveyor la.

The distance between the movable bar 7 and the fixed bar 6 can be adjusted by a distance adjusting member 8 in accordance with the width of the printed wiring board. Therefore, the printed wiring board "81" is sandwiched between the fixed bar 6 and the movable bar 7, so that the position of the printed wiring board "A" is fixed on the belt conveyor la.

The inkjet printer 3 includes a means for optically detecting at least a portion (for example, the front end) of the printed wiring board "A", and stores in advance the marking position, marking characters, symbols, etc. on the printed wiring board "A". A data storage/processing device 9 having a position data management mechanism for operating the ink shared printer 3 based on information from the detection means is connected. Note that this marking position data is stored in the data storage/processing device 9 as coordinates from a predetermined origin for each type of printed wiring board.

Next, the operation of the automatic printing device for printed wiring boards having the above structure will be explained.

First, the printed wiring board loading device 2 will be explained with reference to FIGS. 4a to 4f. Feeding device 2 shown in this figure
is provided with a pair of side frames 2a that are freely expandable in the width direction, and is provided on the lower end of the side frames 2a so as to be vertically movable, and accepts one printed wiring board and expands in the middle direction. It consists of a carrier member 2b that places the received print distribution board "A" on a belt conveyor la.

First, as shown in Fig. 4a, an appropriate number of printed wiring boards "A" are stacked in this loading device 2 in a state in which they are sandwiched between a pair of side frames 2a, and the board 1 is stacked as shown in Fig. 4b. As shown in FIG. 2, the pair of side frame bodies 2a and the carrier member 2b are expanded in the middle direction as shown by the arrow "a". As a result, the printed wiring board laminate strength (supported by the stepped portion 2b' of the carrier member 2b). Next, the side frame 2a and the carrier member 2b are again
are closed as shown by the arrow "P", and after sandwiching the printed wiring board "8" between them (Fig. 4C), only the carrier member 2b is lowered, and the lowest printed wiring board "8" is lowered. A
(Fig. 4d). Next, by opening the pair of carrier members 2b in the middle direction, one of the printed wiring boards is allowed to fall onto the heald conveyor 1a (Fig. 4e).

Next, the carrier member 2b is closed to its original state and raised to return to the same state as in FIG. 4a (Fig. 4f), and then the above operation is repeated, and the printed wiring boards "8" are sequentially moved onto the continuously running belt conveyor la. put it into.

The printed wiring board "8" placed on the belt conveyor 1a is placed between the positioning fixed bar 6 and the positioning movable bar 7 on the heald conveyor 1a until it reaches the bottom of the inkjet printer 3. When the printed wiring board "A" is conveyed below the inkjet printer 3 in this state, a part of the printed wiring board "A", for example, the front end of the printed wiring board "A" or the print A marker etc. attached in advance on the wiring board ""A" is detected by a phototube (not shown), etc., and based on this, information stored in advance from the position data management mechanism in operation 7 is transmitted to the inkjet printer 3. Based on this, the inkjet printer 3 operates, and a predetermined mark is made at a predetermined position on the printed wiring board "A".

The printed wiring board "A" that has been stamped is transferred onto the conveyor held lb and passes through the ultraviolet exposure device 4, during which the stamped portion of the printed wiring board "A" is cured by ultraviolet irradiation. do. Next, printed wiring board''
A” is transferred to the health controller IC and is sent to the receiving device 5.
It is discharged from the downstream end of this heating container LC.

In addition, the characters stamped on the printed wiring board "A" usually differ from lot to lot, but in that case, it depends on the number of lofts. lBy inputting and recording several types of stamp data and the number data of each lot into the position data management mechanism, even if a large number of lofts are mixed and stored in the loading device 2, it will be automatically processed for each lot. You can print with different characters.

〔Effect of the invention〕

As described in detail above, according to the present invention, it is possible to automatically and continuously stamp any characters, symbols, etc. at any location on a printed wiring board, and because an inkjet printer is used, the SR Even if the surface to be marked is uneven due to printing, commercial printing, etc., it is now possible to print clearly.

[Brief explanation of drawings]

FIG. 1 is a side view of an automatic marking device for printed wiring boards according to an embodiment of the present invention, FIG. 2 is a plan view schematically showing the automatic marking device of FIG. 1, and FIG. 3 is a side view of an automatic marking device for printed wiring boards according to an embodiment of the present invention. Plan view showing the position fixing mechanism on the belt conveyor, No. 4a
FIGS. 4F to 4F are side views of main parts sequentially illustrating the loading operation of the printed wiring board. In the figure, 18% lb% lc...belt conveyor, 2
...Input device, 3...Inkjet printer 4...Ultraviolet exposure device, 5...Receiving device, 9...
Data storage/processing equipment.

Claims (1)

[Claims] (1) A belt conveyor that runs endlessly, and a system installed above one end of the belt conveyor for accommodating a plurality of printed wiring boards in a stacked state and feeding the printed wiring boards one by one onto the belt conveyor. An input device, an inkjet printer disposed above the belt conveyor downstream of the input stocker for printing a predetermined character on a printed wiring board using ultraviolet curable ink, and a belt conveyor downstream of the inkjet printer. an ultraviolet exposure device disposed above, a receiving device disposed on a belt conveyor downstream of the ultraviolet exposure device for receiving the printed wiring board after exposure to ultraviolet light from the belt conveyor, and at least the above-mentioned input device; A mechanism for fixing the printed wiring board at a fixed position in the width direction of the belt conveyor between the apparatus and the inkjet printer, and a mechanism for fixing the printed wiring board at a fixed position in the width direction of the belt conveyor; It is characterized by comprising a position data management mechanism for optically detecting, based on this, recognizing the position on the printed wiring board to be stamped, and inputting the position data to the inkjet printer. Automatic marking device for printed wiring boards.