CN207040001U - A special jig for text printing - Google Patents

Abstract

The utility model provides a special jig for character printing, which includes a film with the same size as the circuit board. The upper surface of the film is provided with a plurality of character recognition modules, a plurality of pads and drilling holes corresponding to the positioning holes on the circuit board; A plurality of character recognition modules are arranged corresponding to the character graphics on one side of the circuit board, and the plurality of spacers are evenly arranged on the part of the upper surface of the film where no character recognition modules and drilled holes are arranged.

Description

A special jig for text printing

technical field

The utility model relates to the field of circuit board processing auxiliary tools, in particular to a special fixture for character printing.

Background technique

When printing double-sided characters on the PCB board, the characters on the first side are usually printed first, and then the characters on the second side are printed, but the ink of the characters printed on the PCB board is not cured, and the uncured characters should not be allowed to touch other objects. Therefore, When printing the characters on the second side of the PCB, it is necessary to place the second side of the PCB upwards on the printing table with fixed pins, and the pins will evenly lift up the PCB board. At the same time, these pins should avoid contact with the characters. Because the PCB board is a non-transparent board, it is difficult to determine the position of the pins, and it is easy to make mistakes. If the placement is not good, there will be quality problems such as character scratches, virtual printing, and damage to the PCB board.

Utility model content

In view of the above problems, the utility model provides a special jig for text printing, which includes a film that is consistent with the size of the circuit board. The upper surface of the film is provided with multiple character recognition modules, multiple gaskets and drills corresponding to the positioning holes on the circuit board. holes; the plurality of character recognition modules are arranged corresponding to the character graphics on one side of the circuit board, and the plurality of spacers are evenly arranged on the upper surface of the film where no character recognition modules and drilled holes are provided.

Preferably, the character recognition module is an ink coating.

Further, the shape and size of the character recognition module and the corresponding character graphics on the circuit board are the same.

Preferably, the lower surface of the gasket is bonded to the film.

Further, the upper surface of the gasket is covered with a cured solder resist layer.

Preferably, the gasket is square, with a height of 1.5-3.0mm and a width of 0.5-5mm.

The special fixture for character printing provided by the utility model can be placed on the printing surface with the gasket facing up when printing the characters on the second side after printing the characters on the first side when printing double-sided characters on the PCB board. On the table, place the second side of the PCB board to be printed on the gasket of the fixture, and the first side with the printed characters facing down, because the PCB has been marked on the film of the fixture through the character identification module The position of the character graphic on the first side, and the gasket is set on the part where the character identification module and the drilled hole are not set, so when the characters are printed on the second side, the gasket pads the PCB board, and the uncured PCB board The characters on the first side will not be in contact with the gasket, and will not be scratched by the gasket. The use process is convenient and fast, and it is not easy to make mistakes. And the use of film can effectively buffer the pressure during the text printing process, so that the PCB board is evenly stressed during printing, and the upper surface of the gasket is covered with a cured solder mask to avoid the problems of virtual printing and PCB board damage. .

Description of drawings

Fig. 1 is a schematic diagram of an embodiment of a special jig for character printing provided by the utility model.

detailed description

Below in conjunction with specific embodiment and accompanying drawing, the utility model is further described.

As shown in Figure 1, the special fixture for text printing includes a film 1, which is consistent with the size of the circuit board that needs to be printed on both sides. The upper surface of the film 1 is provided with multiple character recognition modules 3 and multiple gaskets 2; character recognition Module 3 is an ink coating, which is set corresponding to the character graphics on one side of the circuit board and has the same shape and size; during specific production, the character graphics on one side of the circuit board can be directly printed on the upper surface of the film 1, and the film 1 also corresponds to the characters of the circuit board. The alignment hole is provided with a drill hole 4; a plurality of pads 2 are evenly arranged on the upper surface of the film 1 by means of bonding, which is not provided with a character recognition module 3 and is not provided with a drill hole 4.

Gasket 2 is square, with a height of 1.5mm and a width of 5mm. The lower surface of gasket 2 is bonded to the film, and the upper surface of the gasket is covered with a cured solder mask to avoid crushing when placed on the fixture. Circuit board surface.

The above content is a further detailed description of the utility model in combination with specific preferred embodiments, and it cannot be assumed that the specific implementation of the utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the utility model belongs, on the premise of not departing from the concept of the utility model, some simple deduction or replacement can also be made, which should be regarded as belonging to the protection scope of the utility model.

Claims (6)

1. A kind of 1. text printout special fixture, it is characterised in that：Including the film consistent with circuit board size, film upper surface is set There are multiple character recognition modules, multiple pads and drilling corresponding with wiring board upper Positioning holes；The multiple character recognition module It is correspondingly arranged with the character graphics in wiring board one side, the multiple pad is uniformly laid in film upper surface and is not provided with character knowledge Other module and the part of drilling.
2. 2. according to text printout special fixture described in claim 1, it is characterised in that：The character recognition module applies for ink Layer.
3. 3. according to text printout special fixture described in claim 2, it is characterised in that：Character recognition module is corresponding with wiring board The geomery of character graphics is identical.
4. 4. according to text printout special fixture described in claim 1, it is characterised in that：Glued with film the lower surface of the pad Connect.
5. 5. according to text printout special fixture described in claim 4, it is characterised in that：The upper surface of the pad is covered with solidification Welding resisting layer.
6. 6. according to text printout special fixture described in claim 1, it is characterised in that：The pad is square, is highly 1.5- 3.0mm, width 0.5-5mm.