Solder paste smearing device for printed circuit board processing

Abstract

The utility model discloses a solder paste smearing device for processing a printed circuit board, which comprises a base, the upper surface of the base is fixedly connected with supporting rods, the supporting rods are distributed and fixed on the upper surfaces of four corners of the base, the upper surfaces of the supporting rods are fixedly connected with a through printing plate, the upper surface of the through printing plate is provided with an opening, and the through printing plate is provided with a through hole. An air cylinder is fixedly connected to the upper surface of the base, a lifting plate is fixedly connected to the end face of a pushing rod of the air cylinder, a first sliding seat and a second sliding seat are arranged on the surface of the lifting plate, the first sliding seat and the second sliding seat are of a bevel seat structure, and a circuit board is clamped and fixed to the upper surface of the first sliding seat and the upper surface of the second sliding seat. A motor is fixedly connected to the outer side surface of the lifting plate, a forward thread is arranged on one side of the outer surface of a driving shaft of the motor, an electric cylinder is adopted to drive a scraping plate to move, the scraping plate can be moved to scrape solder paste and smear the solder paste, the motor is arranged at the bottom to drive a sliding base on the side to move, a circuit board can be clamped and fixed, and clamping and fixing are convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of tin paste smearing device for printed circuit board processing, more specifically to a tin paste smearing device for printed circuit board processing. BACKGROUND

[0002] Solder paste is a new type of welding material emerging with SMT. Solder paste is a complex system, which is a paste mixed by solder powder, flux and other additives. Solder paste has certain viscosity at room temperature, which can initially stick electronic components to a designated position. At the welding temperature, with the volatilization of solvents and part of the additives, the soldered components and the printed circuit pads are welded together to form a permanent connection. Solder paste has a pungent taste, and if you are in this environment for a long time, you may have mild tin poisoning, and frequent breathing can also harm the lungs. However, solder paste has very good welding properties. Traditional manual smearing has high labor intensity, low production efficiency, and is prone to brush marks, uneven solder paste smearing and other phenomena, which affects the flatness and appearance of the circuit board. In addition, the circuit board lacks fixation when smearing solder paste, which is prone to deviation, sliding or rotation, resulting in deviation of the circuit board solder paste smearing.

[0003] In the prior art, such as the utility model with the authorization announcement number CN221454599U, the utility model relates to the field of circuit board processing and discloses a tin paste smearing device for printed circuit board processing, which comprises a workbench, a box body fixedly connected to the upper side of the workbench, a first motor fixedly connected to the right side of the box body, a lead screw fixedly connected to the output end of the first motor, a first connecting block threadedly connected to the outside of the lead screw, first electric telescopic rods fixedly connected to the bottom of the first connecting block, and a horizontal rack plate fixedly connected to the output end of the first electric telescopic rods. In the utility model, the tin paste smearing of the circuit board is realized through the setting of the lead screw and the first electric telescopic rods. The tin paste smearing of the entire surface of the circuit board does not need to be manually operated, which greatly reduces the labor intensity and has the advantage of high safety. The setting of the bidirectional threaded rod can solve the technical problem that the circuit board lacks fixation and is prone to deviation, sliding or rotation, which causes damage to the circuit board.

[0004] In the above-mentioned patent, the scraping assembly is complex, and a spring structure is provided, which is prone to shaking during extrusion and scraping. The scraping mechanism has high cost and is unstable. In addition, the bottom clamping assembly is inconvenient to adjust during use, and it is not convenient to adjust the fixing range when fixing circuit boards of different sizes. UTILITY MODEL CONTENTS

[0005] The utility model discloses a tin cream smearing device for printed circuit board processing, through adopting the electric cylinder to drive the scraper to move, the movable scraper can scrape the tin cream, and the bottom is provided with the motor to drive the slide of the opening side to move, can clamping fixed circuit board, and clamping is convenient.

[0006] To solve the above problems, the utility model adopts the following technical scheme.

[0007] A tin cream smearing device for printed circuit board processing, including the base, the upper surface of base is fixedly connected with the support rod, the support rod distribution is fixed on the upper surface of four corners of base, the upper surface of support rod is fixedly connected with the leakage printing plate, the upper surface of leakage printing plate is provided with the aperture, the upper surface of base is fixedly connected with the air cylinder, the advancing rod end surface of air cylinder is fixedly connected with the lifting plate, the surface of lifting plate is provided with first slide and second slide, first slide and second slide adopt the angle seat structure, the upper surface of first slide and second slide is clamped and fixed with circuit board, the outside surface of lifting plate is fixedly connected with motor, the outside surface of drive shaft one side is provided with the positive thread, is connected with the inside surface of first slide lower end through the positive thread, the other side outside surface of drive shaft is provided with the reverse thread, is connected with the inside surface of second slide through the reverse thread, one side outside surface of leakage printing plate is fixedly connected with electric cylinder, the advancing rod end surface of electric cylinder is fixed with the scraper, through adopting the electric cylinder to drive the scraper to move, the movable scraper can scrape the tin cream, and the bottom is provided with the motor to drive the slide of the opening side to move, can clamping fixed circuit board, and clamping is convenient.

[0008] Further, the surface of the lifting plate is provided with a strip-shaped sliding groove, and the surface of the protrusion of the first slide and the second slide is slidingly connected to the inside surface of the strip-shaped sliding groove.

[0009] Further, the scraper adopts a square strip structure, the lower surface of the scraper is attached to the upper surface of the leakage printing plate, and the lower surface of the scraper is provided with an inclined cutout.

[0010] Further, the air cylinder is arranged at the four corners of the upper surface of the base.

[0011] Further, the motor adopts a forward and reverse reduction motor, and the outer surfaces of the first slide and the second slide are covered with rubber layers.

[0012] Further, the apertures are uniformly and densely arranged in an array on the upper surface of the leakage printing plate.

[0013] Further, the lower end of the first slide and the second slide is provided with a protrusion, and the outer surfaces of the protrusions of the first slide and the second slide are tightly attached to the inside surface of the strip-shaped sliding groove.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] (1) through adopting electric cylinder to drive scraper to move, can move scraper to scrape tin paste and spread, and the bottom sets up motor drive to open the side of slide that moves, can clamping fixed circuit board, clamping is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the first schematic view of the whole structure of the utility model;

[0017] Figure 2 It is the second schematic view of the whole structure of the utility model;

[0018] Figure 3 It is the third schematic view of the whole structure of the utility model;

[0019] Figure 4 It is the whole structure section view of the utility model;

[0020] Figure 5 It is the schematic view of the utility model's leakage printing plate.

[0021] Mark explanation in drawing:

[0022] 1 base, 2 support rod, 3 leakage printing plate, 4 cylinder, 5 lifting plate, 6 first slide, 7 second slide, 8 motor, 9 drive shaft, 10 strip slide, 11 circuit board, 12 electric cylinder, 13 scraper, 30 opening. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the scope of the utility model protection.

[0024] Embodiment 1

[0025] Please refer to Figures 1-5A kind of tin paste smearing device for printed circuit board processing, including base 1, the upper surface of base 1 is fixedly connected with support rod 2, support rod 2 is distributed and fixed on the upper surface of four corners of base 1, the upper surface of support rod 2 is fixedly connected with leakage printing plate 3, the upper surface of leakage printing plate 3 is provided with aperture 30, the upper surface of base 1 is fixedly connected with cylinder 4, the end surface of the push rod of cylinder 4 is fixedly connected with lifting plate 5, the surface of lifting plate 5 is provided with first sliding seat 6 and second sliding seat 7, first sliding seat 6 and second sliding seat 7 adopt angle seat structure, the upper surface of first sliding seat 6 and second sliding seat 7 is clamped and fixed with circuit board 11, the outer surface of lifting plate 5 is fixedly connected with motor 8, the outer surface of the drive shaft 9 of motor 8 one side is provided with positive thread, and is connected with the inner side surface of the lower end of first sliding seat 6 by positive thread, the other side outer surface of drive shaft 9 is provided with reverse thread, and is connected with the inner side surface of second sliding seat 7 by reverse thread, the outer surface of one side of leakage printing plate 3 is fixedly connected with electric cylinder 12, and the end surface of the push rod of electric cylinder 12 is fixed with scraper 13;By adopting electric cylinder to drive scraper to move, tin paste can be scraped flat by movable scraper, and the sliding seat of the side driven by motor at bottom is moved, circuit board can be clamped and fixed, and clamping and fixing are convenient;

[0026] The surface of lifting plate 5 is provided with strip-shaped sliding groove 10, and the surface of the lower end of first sliding seat 6 and second sliding seat 7 is slidably connected to the inner side surface of strip-shaped sliding groove 10;Stable sliding;

[0027] Scraper 13 adopts square strip structure, the lower surface of scraper 13 is attached to the upper surface of leakage printing plate 3, and the lower surface of scraper 13 is provided with inclined cutout;It is convenient to scrape tin paste flat when scraping;

[0028] Cylinder 4 is distributed and arranged on the upper surface of four corners of base 1;

[0029] Motor 8 adopts positive and negative speed reduction motor, and the outer surface of first sliding seat 6 and second sliding seat 7 is covered with rubber layer;Aperture 30 is evenly and densely arrayed on the upper surface of leakage printing plate 3;The lower end of first sliding seat 6 and second sliding seat 7 is provided with protrusion, and the outer surface of the protrusion of first sliding seat 6 and second sliding seat 7 is closely attached to the inner side surface of strip-shaped sliding groove 10;

[0030] In use, the upper surface of the leakage printing plate 3 is provided with an opening 30, the upper surface of the base 1 is fixedly connected with a pneumatic cylinder 4, the end surface of the advancing rod of the pneumatic cylinder 4 is fixedly connected with a lifting plate 5, the surface of the lifting plate 5 is provided with a first sliding seat 6 and a second sliding seat 7, the first sliding seat 6 and the second sliding seat 7 adopt a folding angle seat structure, the upper surface of the first sliding seat 6 and the second sliding seat 7 clamps and fixes a circuit board 11, in use, the circuit board 11 is placed at the first sliding seat 6 and the second sliding seat 7, the outer surface of the lifting plate 5 is fixedly connected with a motor 8, the outer surface of the driving shaft 9 of the motor 8 is provided with a forward thread on one side, the lower end inner surface of the first sliding seat 6 is connected with the forward thread, the other side outer surface of the driving shaft 9 is provided with a reverse thread, the inner surface of the second sliding seat 7 is connected with the reverse thread, the driving shaft 9 is driven to rotate by the motor 8, the first sliding seat 6 and the second sliding seat 7 can be simultaneously contracted or expanded, the circuit board 11 can be clamped and fixed, and in use, the lifting plate 5 is driven to rise by the pneumatic cylinder 4, the circuit board 11 is attached to the bottom of the leakage printing plate 3, after tin paste is placed on the surface, the tin paste is scraped by a scraper 13 driven by a motor cylinder 12, the tin paste can be coated in the opening 30, the tin paste can be attached to the upper surface of the circuit board 11, the tin paste is convenient to coat, the circuit board 11 is convenient to clamp, the scraper 13 is convenient to scrape, and the scraping mechanism is simple and low in cost.

[0031] The above merely describes a preferred embodiment of the present application; however, the protection scope of the present application is not limited to this. Any skilled person in the art, according to the technical scheme and improvement concept of the present application, can make equivalent replacement or change within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A tin paste smearing device for printed circuit board processing, comprising a base (1), characterized in that: The upper surface of the base (1) is fixedly connected with a support rod (2), the support rod (2) is fixedly arranged on the upper surface of the four corners of the base (1), the upper surface of the support rod (2) is fixedly connected with a squeegee plate (3), the upper surface of the squeegee plate (3) is provided with an opening (30), the upper surface of the base (1) is fixedly connected with a pneumatic cylinder (4), the end surface of the push rod of the pneumatic cylinder (4) is fixedly connected with a lifting plate (5), the surface of the lifting plate (5) is provided with a first sliding seat (6) and a second sliding seat (7), the first sliding seat (6) and the second sliding seat (7) adopt a folding angle seat structure, the upper surface of the first sliding seat (6) and the second sliding seat (7) is clamped and fixed with a circuit board (11), the outer surface of the lifting plate (5) is fixedly connected with a motor (8), the outer surface of the drive shaft (9) of the motor (8) is provided with a forward thread, which is connected to the inner surface of the lower end of the first sliding seat (6), the other side of the outer surface of the drive shaft (9) is provided with a reverse thread, which is connected to the inner surface of the second sliding seat (7), one side of the outer surface of the squeegee plate (3) is fixedly connected with an electric cylinder (12), the end surface of the push rod of the electric cylinder (12) is fixedly connected with a scraper (13).

2. The tin paste smearing device for processing printed circuit board according to claim 1, characterized in that: The surface of the lifting plate (5) is provided with a strip-shaped sliding groove (10), and the surface of the protrusion of the lower end of the first sliding seat (6) and the second sliding seat (7) is slidingly connected to the inner surface of the strip-shaped sliding groove (10).

3. The tin paste smearing device for processing printed circuit board according to claim 1, characterized in that: The scraper (13) adopts a square strip structure, the lower surface of the scraper (13) is attached to the upper surface of the squeegee plate (3), and the lower surface of the scraper (13) is provided with an inclined cut.

4. The tin paste smearing device for processing printed circuit board according to claim 1, characterized in that: The pneumatic cylinder (4) is arranged at the four corners of the upper surface of the base (1).

5. The tin paste smearing device for processing printed circuit board according to claim 1, characterized in that: The motor (8) adopts a forward and reverse reduction motor, and the outer surface of the first sliding seat (6) and the second sliding seat (7) is covered with a rubber layer.

6. The tin paste smearing device for processing printed circuit board according to claim 1, characterized in that: The openings (30) are uniformly and densely arranged on the upper surface of the squeegee plate (3).

7. The tin paste smearing device for processing printed circuit board according to claim 1, characterized in that: The lower end of the first sliding seat (6) and the second sliding seat (7) is provided with a protrusion, and the outer surface of the protrusion of the first sliding seat (6) and the second sliding seat (7) is tightly attached to the inner surface of the strip-shaped sliding groove (10).

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