CN215041198U - Positioning device of solder paste printing machine - Google Patents

Abstract

The application relates to the field of solder paste printing machines, in particular to a positioning device of a solder paste printing machine. The positioning device of the solder paste printer comprises a hole plate for placing a circuit board and a positioning pin for positioning the circuit board; the hole plate is provided with a plurality of holes for fixing the positioning pins, the positioning pins are detachably matched with the holes, and the positioning pins can be inserted into the mounting holes in the circuit board. The positioning of the circuit board is realized, so that the printing position points are relatively accurate in the production process, and the printing quality and the printing efficiency are improved.

Description

Positioning device of solder paste printing machine

Technical Field

The application relates to the field of solder paste printing machines, in particular to a positioning device of a solder paste printing machine.

Background

Printed Circuit Boards (PCBs) are one of the important components of the electronics industry, and are used in almost every type of electronic device. The printed circuit board has solder sites and mounting holes for subsequent mounting. The printed circuit board can replace complex wiring to realize electrical connection among elements in the circuit, thereby simplifying the assembly and welding work of electronic products, reducing the wiring workload in the traditional mode and greatly lightening the labor intensity of workers; and the volume of the whole machine is reduced, the product cost is reduced, and the quality and the reliability of the electronic equipment are improved. The printed circuit board has good product consistency, can adopt a standardized design, and is beneficial to realizing mechanization and automation in the production process. In the automated production of printed circuit boards, solder paste printing is required using a solder paste printer.

The working principle of the solder paste printer is as follows: the printed circuit board is placed on the workbench, the printer steel mesh is moved downwards to enable welding points on the welding pad of the printed circuit board to be aligned with meshes of the printer steel mesh, and solder paste is printed on the welding pad of the printed circuit board through the steel mesh by the left scraper and the right scraper of the printer. In the production process, the relative position of the welding sites and the meshes can be shifted due to vibration or scraping in the related art, so that the printing sites are inaccurate.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem of inaccurate printing position in the background art, the application provides a positioning device of a solder paste printer.

The application provides a positioner of tin cream printing machine adopts following technical scheme:

a positioning device of a solder paste printer comprises a hole plate for placing a circuit board and a positioning pin for positioning the circuit board; the hole plate is provided with a plurality of holes for fixing the positioning pins, the positioning pins are detachably matched with the holes, and the positioning pins can be inserted into the mounting holes in the circuit board.

By adopting the technical scheme, the positioning pin is fixed on the hole plate, and then the circuit board is placed on the hole plate, so that the positioning pin is inserted into the dark clan hole on the circuit board, and the positioning of the positioning pin on the circuit board is realized; the position of the circuit board can not move in the printing process, and accurate printing can be realized. After the first circuit board is printed, the circuit board to be printed is directly placed at the position where the positioning pin is positioned, and printing can be completed without readjustment.

Optionally, the hole plate is provided with a supporting block for supporting the circuit board.

Through adopting above-mentioned technical scheme, be provided with the supporting shoe between circuit board and the hole board, be convenient for get and put the circuit board.

Optionally, a positioning block is arranged on the positioning pin, and when the positioning pin is inserted into the mounting hole in the circuit board, the top of the positioning block is abutted to the lower surface of the circuit board.

Through adopting above-mentioned technical scheme, the locating piece can support the circuit board for thereby the circuit board can not be excessively pushed down and lead to appearing great gap between circuit board and the steel mesh when printing.

Optionally, an adjusting part is connected to the locating pin, a limiting hole is formed in the adjusting part, a limiting screw is arranged on the adjusting part, and the limiting screw penetrates through the limiting hole to be in threaded connection with the hole plate; the limiting screw can slide in the limiting hole, and the length of the limiting hole is larger than the distance between two adjacent internal thread holes.

By adopting the technical scheme, the position of the adjusting part is fixed by the threaded connection of the limiting screw and the hole plate, so that the positions of the positioning pin and the circuit board are fixed; the position that spacing hole length direction removed regulating part adjusted the locating pin can be followed after unscrewing spacing screw, also can the position that spacing screw rotated regulating part adjusted the locating pin as the fulcrum, can realize adjusting the position of locating pin under the condition that does not change spacing screw position, and the suitability is strong.

Optionally, a plurality of support columns are installed on the hole plate, each support column includes a support portion for supporting the circuit board and a threaded portion fixedly connected with the support portion, and the threaded portion is in threaded fit with the hole plate.

By adopting the technical scheme, the supporting columns support the edge part of the circuit board outside the supporting block, so that the edge of the circuit board cannot be bent by a steel mesh and a scraper during printing.

Optionally, the support portion is provided with a flange at a connection with the threaded portion.

By adopting the technical scheme, when the threaded part is completely matched with the internal threaded hole, the flange is tightly abutted against the upper surface of the hole plate, so that the height of the part of the support column above the upper surface of the hole plate is the same.

Optionally, a countersunk hole is formed in the supporting block, and a bolt in threaded fit with the hole plate is installed in the countersunk hole.

By adopting the technical scheme, the supporting block is fixed on the hole plate, so that the vibration and the micro displacement of the supporting block are reduced, and the printing quality is improved.

Optionally, the number of the supporting blocks is two or more.

Through adopting above-mentioned technical scheme, two and above supporting shoe can arrange the combination according to the circuit board size and support the circuit board jointly.

To sum up, compare with the correlation technique, the utility model discloses following beneficial effect has:

1. the utility model discloses with the locating pin back of fixing a position to the circuit board, the position of printing in-process circuit board just can not remove again, can realize accurate printing. After the first circuit board is printed, the circuit board to be printed is directly placed at the position where the positioning pin is positioned, and printing can be completed without readjustment. The adjusting part can be moved along the length direction of the limiting hole to adjust the position of the positioning pin after the limiting screw is unscrewed, the adjusting part can also be rotated by taking the limiting screw as a fulcrum to adjust the position of the positioning pin, and the position of the positioning pin can be adjusted under the condition that the position of the limiting screw is not changed.

2. The utility model discloses set up the support column supporting circuit board and be located the outer marginal part of supporting shoe for the circuit board edge can not be buckled by steel mesh and scraper when printing, has improved the quality of printing.

Drawings

FIG. 1 is a schematic view of the overall structure of a positioning device of a solder paste printer.

FIG. 2 is a schematic diagram of a positioning device of a solder paste printer for positioning a circuit board.

FIG. 3 is a schematic diagram of a partially exploded front view of a positioning device of a solder paste printer.

Description of reference numerals: 1. a hole plate; 2. a support block; 3. positioning pins; 4. a support pillar; 5. an adjustment section; 6. positioning blocks; 21. a countersunk hole; 41. a threaded portion; 42. a support portion; 51. a limiting hole; 52. a limiting screw; 421. a flange.

Detailed Description

The present application is described in further detail below with reference to figures 1 and 2.

The embodiment of the application discloses a positioning device of a solder paste printer. Referring to fig. 1, the positioning device of the solder paste printer includes a hole plate 1, a support block 2, a positioning pin 3, a support column 4, an adjustment portion 5, and a positioning block 6. The hole plate 1 is arranged on a workbench of a solder paste printer and is used as a base body for installation and support; the supporting block 2 is arranged on the hole plate 1 and used for supporting the circuit board; the support column 4 is arranged on the hole plate 1 and used for assisting the support block 2 to support the circuit board; the positioning pin 3 is fixedly connected to the positioning block 6 and used for positioning the circuit board; the positioning block 6 is positioned below the positioning pin 3 and used for supporting the circuit board; the adjusting part 5 is fixedly connected with the positioning block 6, detachably and fixedly connected with the hole plate 1 and used for fixing and adjusting the position of the positioning pin 3.

Referring to fig. 1, a plurality of internal thread holes which are uniformly distributed are formed on a hole plate 1. Two ends of the supporting block 2 are respectively provided with a counter bore 21, and a bolt is installed in the counter bore 21 to be matched with an internal thread hole on the hole plate 1, so that the supporting block 2 and the hole plate 1 can be detachably and fixedly connected. In actual production, a plurality of supporting blocks 2 can be arranged, combined and installed to support the circuit board together according to the size of the circuit board.

Referring to fig. 2, the positioning pin 3 is a cylindrical protrusion and can be inserted into a mounting hole of the circuit board to limit the circuit board. The positioning block 6 is fixedly connected below the positioning pin 3 and used for supporting the circuit board. Adjusting part 5 and locating piece 6 fixed connection have seted up spacing hole 51 on the adjusting part 5 to be provided with stop screw 52, stop screw 52 passes spacing hole 51 and the internal thread hole cooperation on the hole board 1 and reaches the purpose of fixed locating piece 6 and locating pin 3, and then the position of fixed circuit board. The limiting screw 52 can slide in the limiting hole 51, the adjusting part 5 can be moved along the length direction of the limiting hole 51 to adjust the position of the positioning pin 3 after the limiting screw 52 is unscrewed, and the adjusting part 5 can also be rotated by taking the limiting screw 52 as a fulcrum to adjust the position of the positioning pin 3.

Referring to fig. 3, the support column 4 includes a threaded portion 41 and a support portion 42 fixedly coupled to the threaded portion 41. The threaded portion 41 is engaged with an internally threaded hole of the hole plate 1 so that the support post 4 is fixed to the hole plate 1. The supporting portion 42 is provided with an annular flange 421 at the connection position with the threaded portion 41, when the threaded portion 41 is completely matched with the internal threaded hole, the flange 421 abuts against the upper surface of the hole plate 1, so that the height of the portion, above the upper surface of the hole plate 1, of the supporting column 4 is the same, and the height of the portion, above the upper surface of the hole plate 1, of the supporting column 4 is the same as the height of the supporting block 2.

The implementation principle of the positioning device of the solder paste printer in the embodiment of the application is as follows: the positioning pin 3 is inserted into the mounting hole of the circuit board, and the limiting screw 52 is in threaded connection with the hole plate 1 to fix the adjusting part 5, the positioning block 6 and the positioning pin 3, so that the purpose of fixing the circuit board is achieved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a positioner of tin cream printing machine which characterized in that: comprises a hole plate (1) for placing a circuit board and a positioning pin (3) for positioning the circuit board; the hole plate (1) is provided with a plurality of holes for fixing the positioning pins (3), the positioning pins (3) are detachably matched with the holes, and the positioning pins (3) can be inserted into mounting holes in a circuit board.

2. A positioning device for a solder paste printer according to claim 1, wherein: the hole plate (1) is provided with a supporting block (2) for supporting the circuit board.

3. A positioning device for a solder paste printer according to claim 2, wherein: be provided with locating piece (6) on locating pin (3), work as when locating pin (3) are pegged graft with the mounting hole on the circuit board, the top of locating piece (6) and the lower surface butt of circuit board.

4. A positioning device for a solder paste printer according to claim 3, wherein: the positioning pin (3) is connected with an adjusting part (5), the adjusting part (5) is provided with a limiting hole (51), the adjusting part (5) is provided with a limiting screw (52), and the limiting screw (52) penetrates through the limiting hole (51) to be in threaded connection with the hole plate (1); the limiting screw (52) can slide in the limiting hole (51), and the length of the limiting hole (51) is larger than the distance between two adjacent holes.

5. A positioning device for a solder paste printer according to claim 2, wherein: install a plurality of support columns (4) on hole board (1), support column (4) including be used for supporting circuit board supporting part (42) and with supporting part (42) fixed connection's screw thread portion (41), screw thread portion (41) with hole board (1) screw-thread fit.

6. A positioning device for a solder paste printer according to claim 5, wherein: the support portion (42) is provided with a flange (421) at a connection with the threaded portion (41).

7. A positioning device for a solder paste printer according to claim 2, wherein: the supporting block (2) is provided with a counter bore (21), and a bolt in threaded fit with the hole plate (1) is installed in the counter bore (21).

8. A positioning device for a solder paste printer according to claim 2, wherein: the number of the supporting blocks (2) is two or more.

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