Automatic circuit board solder paste printing machine

Abstract

The utility model relates to the technical field of solder paste printing machines, and discloses an automatic circuit board solder paste printing machine which comprises a base, a motor is fixedly connected to the outer wall of the base, a positive and negative screw rod is fixedly arranged at the output end of the motor, and the outer wall of the positive and negative screw rod is rotationally connected to the inner wall of the base. A sliding block is slidably connected to the outer wall of the positive and negative screw rod, a sliding rail is slidably connected to the inner wall of the sliding block, the lower surface of the sliding rail is fixedly connected to the inner wall of the base, a clamping block is fixedly connected to the upper surface of the sliding block, and a silica gel pad is fixedly connected to the outer wall of the clamping block. According to the utility model, the base, the motor, the positive and negative screw rod, the sliding block, the sliding rail, the clamping block, the silica gel pad and the circuit board body are matched with one another, so that the circuit board body can be firmly fixed at a specified position, the circuit board body is prevented from deviating or displacing in the printing process, and accurate alignment of the circuit board body is ensured; and the accurate alignment effect of the circuit board body is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of tin printing machine, especially to automatic circuit board tin printing machine. BACKGROUND

[0002] Automatic circuit board tin printing machine is a device used in surface mount technology (SMT) production line, and its main function is to accurately apply tin paste to the solder pad area on the circuit board. Tin paste is an essential material in the soldering process of surface mount components (SMD), usually composed of tin powder, flux and other components. Tin paste is applied to the solder pad on the circuit board through stencil or screen printing technology of the printing machine, providing a soldering basis for component mounting.

[0003] Under normal circumstances, during the tin printing process, the circuit board must be accurately aligned with the hole position in the stencil. If the circuit board is not firmly fixed, the position may deviate, which will cause uneven tin printing, inaccurate solder pad coating on the circuit board, and thus affect the soldering quality, and even possibly cause the entire circuit board to malfunction. SUMMARY

[0004] To make up for the above shortcomings, the utility model provides an automatic circuit board tin printing machine, aiming to improve the problem of circuit board not being firmly fixed, position deviation and affecting soldering quality.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] Automatic circuit board tin printing machine, including base, the outer wall of base is fixedly connected with motor, the output end of motor is fixedly provided with positive and negative screw rod, the outer wall of positive and negative screw rod is rotatably connected in the inner wall of base, the outer wall of positive and negative screw rod is slidably connected with sliding block, the inner wall of sliding block is slidably connected with slide rail, the lower surface of slide rail is fixedly connected in the inner wall of base, the upper surface of sliding block is fixedly connected with clamping block, the outer wall of clamping block is fixedly connected with silica gel pad, the outer wall of silica gel pad is provided with circuit board body, the lower surface of circuit board body is arranged on the upper surface of base, the upper surface of base is provided with scraping assembly, for the function of scraping tin paste.

[0007] Preferably, the scraping assembly comprises a fixed plate, the lower surface of the fixed plate is fixedly connected to the upper surface of the base, the inner wall of the fixed plate is provided with a support plate, the lower surface of the support plate is provided with a scraper machine.

[0008] Preferably, the inner wall of the fixed plate is provided with a frame one, the inner wall of the frame one is slidably connected with a stencil.

[0009] Preferably, the inner wall of the template is slidably connected with a sliding plate, the outer wall of the sliding plate is fixedly connected with a limiting plate, and the outer wall of the limiting plate is slidably connected with the inner wall of the template.

[0010] Preferably, the outer wall of the sliding plate is fixedly connected with a spring, and the outer wall of the spring is fixedly connected with a fixed frame.

[0011] Preferably, the outer wall of the sliding plate is fixedly connected with a connecting column, and the outer wall of the connecting column is slidably connected with the inner wall of the fixed frame.

[0012] Preferably, the outer wall of the connecting column is fixedly connected with a clamping block, and the outer wall of the clamping block is arranged on the inner wall of the frame one.

[0013] Preferably, the inner wall of the frame one is provided with a groove, and the outer wall of the clamping block is arranged on the inner wall of the groove.

[0014] The utility model has the advantages of the following:

[0015] 1. In the utility model, the base, the motor, the forward and reverse screw rod, the sliding block, the sliding rail, the clamping block, the silica gel pad and the circuit board body are matched with each other, so that the circuit board body can be fixed in the specified position, any deviation or displacement of the circuit board body in the printing process is prevented, the accurate alignment of the circuit board body is ensured, and the effect of accurate alignment of the circuit board body is ensured.

[0016] 2. In the utility model, the frame one, the template, the sliding plate, the limiting plate, the spring, the fixed frame, the connecting column, the clamping block and the groove are matched with each other, so that the tin paste residue on the surface of the template can be conveniently cleaned, the tin paste is prevented from blocking the hole, the tin paste layer of the next printing is ensured to be uniform, printing failure and other quality problems are avoided, and the maintenance efficiency is improved. ACCURATE ALIGNMENT

[0017] Figure 1 It is the perspective view of the automatic circuit board tin paste printing machine provided by the utility model;

[0018] Figure 2 It is the sliding block partial structure schematic view of the automatic circuit board tin paste printing machine provided by the utility model;

[0019] Figure 3 It is the scraper machine partial structure schematic view of the automatic circuit board tin paste printing machine provided by the utility model;

[0020] Figure 4 It is the spring partial structure schematic view of the automatic circuit board tin paste printing machine provided by the utility model.

[0021] Legend:

[0022] 1, base; 2, motor; 3, positive and negative screw; 4, sliding block; 5, slide rail; 6, clamping block; 7, silica gel pad; 8, circuit board body; 9, fixed plate; 10, support plate; 11, scraper machine; 12, frame one; 13, template; 14, sliding plate; 15, limiting plate; 16, spring; 17, fixed frame; 18, connecting column; 19, clamping block; 20, groove. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the specification of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Referring to Figures 1-3 , the utility model provides an embodiment: automatic circuit board tin paste printing machine, including base 1, the outer wall of base 1 is fixedly connected with motor 2, the output of motor 2 is fixedly provided with positive and negative screw 3, the outer wall of positive and negative screw 3 is rotatably connected in the inner wall of base 1, the outer wall of positive and negative screw 3 is slidably connected with sliding block 4, the inner wall of sliding block 4 is slidably connected with slide rail 5, the lower surface of slide rail 5 is fixedly connected in the inner wall of base 1, the upper surface of sliding block 4 is fixedly connected with clamping block 6, the outer wall of clamping block 6 is fixedly connected with silica gel pad 7, the outer wall of silica gel pad 7 is provided with circuit board body 8, the lower surface of circuit board body 8 is arranged on the upper surface of base 1, the upper surface of base 1 is provided with scraping assembly, for the effect of scraping tin paste;Scraping assembly includes fixed plate 9, the lower surface of fixed plate 9 is fixedly connected in the upper surface of base 1, the inner wall of fixed plate 9 is provided with support plate 10, the lower surface of support plate 10 is provided with scraper machine 11;

[0025] Specifically, the base 1 can play a fixed support role for the motor 2. When the motor 2 is turned on, the motor 2 will drive the lead screw 3 to rotate, and the rotation of the lead screw 3 will drive the sliding blocks 4 on the outer wall of the slide rail 5 to slide synchronously and oppositely. The slide rail 5 can ensure the stability of the sliding block 4, and the base 1 can also play a fixed support role for the slide rail 5. Meanwhile, the sliding of the sliding block 4 will also drive the clamping block 6 to slide, and the sliding of the clamping block 6 will also drive the silica gel pad 7 to slide. The synchronous and opposite sliding of the clamping blocks 6 on both sides can clamp and fix the circuit board body 8. The silica gel pad 7 can effectively alleviate the local pressure generated during clamping and reduce damage to the circuit board body 8. Through clamping and fixing the circuit board body 8, the circuit board body 8 can be firmly fixed at a specified position to prevent any deviation or displacement of the circuit board body 8 during printing, ensuring the accurate alignment of the circuit board body 8. The base 1 can play a fixed support role for the fixed plate 9, and the fixed plate 9 can play a support role for the support plate 10. The support plate 10 can also play a fixed support role for the scraper machine 11. The scraper machine 11 can drive the tin paste on the stencil 13 through the scraper to make the tin paste enter the surface of the circuit board body 8 through the gap of the stencil 13.

[0026] With reference to Figure 3 The inner wall of the fixed plate 9 is provided with a frame one 12, and the inner wall of the frame one 12 is slidably connected with a stencil 13.

[0027] Specifically, the fixed plate 9 can play a support role for the frame one 12, and the frame one 12 can play a support role for the stencil 13. The stencil 13 can slide in the inner wall of the frame one 12.

[0028] With reference to Figure 4 The inner wall of the stencil 13 is slidably connected with a sliding plate 14, the outer wall of the sliding plate 14 is fixedly connected with a limiting plate 15, the outer wall of the limiting plate 15 is slidably connected in the inner wall of the stencil 13. The outer wall of the sliding plate 14 is fixedly connected with a spring 16, and the outer wall of the spring 16 is fixedly connected with a fixed frame 17. The outer wall of the sliding plate 14 is fixedly connected with a connecting column 18, and the outer wall of the connecting column 18 is slidably connected in the inner wall of the fixed frame 17. The outer wall of the connecting column 18 is fixedly connected with a clamping block 19, and the outer wall of the clamping block 19 is arranged in the inner wall of the frame one 12. A groove 20 is arranged in the inner part of the frame one 12, and the outer wall of the clamping block 19 is arranged in the inner wall of the groove 20.

[0029] Specifically, the template 13 can support the sliding plate 14, the sliding plate 14 can support the limiting plate 15, and the limiting plate 15 can limit the sliding plate 14, so that the sliding plate 14 and the template 13 are connected, and when the sliding plate 14 is slid, the connecting column 18 slides in the inner wall of the fixed frame 17, and the sliding of the connecting column 18 drives the clamping block 19 to slide, so that the template 13 and the frame 12 are fixed, the template 13 can slide out of the inner wall of the frame 12, and the template 13 can be quickly disassembled, when installation is needed, the template 13 is slid to the inner wall of the frame 12, the sliding plate 14, the connecting column 18 and the clamping block 19 are slid by the elastic force of the spring 16, the clamping block 19 is slid to the inner wall of the groove 20, the template 13 can be quickly disassembled and installed, the tin paste residue on the surface of the template 13 can be conveniently cleaned, the tin paste is prevented from blocking the hole, the tin paste layer is ensured to be uniform in next printing, and printing failure and other quality problems are avoided.

[0030] Working principle: when the device is needed, first, the staff opens the motor 2, the motor 2 drives the forward and reverse screw rod 3 to rotate, the rotation of the forward and reverse screw rod 3 drives the two sliding blocks 4 to slide synchronously and oppositely, the sliding of the sliding blocks 4 drives the clamping blocks 6 to slide, the sliding of the clamping blocks 6 drives the silica gel pads 7 to slide, the circuit board body 8 is fixed and clamped through the sliding of the two silica gel pads 7, and the circuit board body 8 is fixed at the specified position, when the template 13 needs to be replaced or cleaned, first, the staff pushes the sliding plate 14, the sliding plate 14 drives the connecting column 18 to slide in the inner wall of the fixed frame 17, the sliding of the connecting column 18 drives the clamping block 19 to slide, the clamping block 19 slides out of the inner wall of the groove 20, the template 13 is fixed, the template 13 can be quickly disassembled and installed, the template 13 can be conveniently cleaned, the device can not only fix and clamp the circuit board body 8, fix the circuit board body 8 at the specified position, prevent the circuit board body 8 from deviating or shifting during printing, ensure the accurate alignment of the circuit board body 8, improve the positioning accuracy of the circuit board body 8, but also can quickly disassemble the template 13 to conveniently clean the tin paste residue on the surface of the template 13, prevent the tin paste from blocking the hole, ensure that the tin paste layer is uniform in next printing, avoid printing failure and other quality problems, and improve the maintenance efficiency.

[0031] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. An automated circuit board solder paste printer comprising a base (1), characterized in that: The outer wall of the base (1) is fixedly connected with a motor (2), the output end of the motor (2) is fixedly provided with a positive and negative screw rod (3), the outer wall of the positive and negative screw rod (3) is rotatably connected to the inner wall of the base (1), the outer wall of the positive and negative screw rod (3) is slidably connected with a sliding block (4), the inner wall of the sliding block (4) is slidably connected with a slide rail (5), the lower surface of the slide rail (5) is fixedly connected to the inner wall of the base (1), the upper surface of the sliding block (4) is fixedly connected with a clamping block (6), the outer wall of the clamping block (6) is fixedly connected with a silica gel pad (7), the outer wall of the silica gel pad (7) is provided with a circuit board body (8), the lower surface of the circuit board body (8) is arranged on the upper surface of the base (1), and the upper surface of the base (1) is provided with a scraping assembly for scraping tin paste.

2. The automated circuit board solder paste printing machine of claim 1, wherein: The scraping assembly comprises a fixed plate (9), the lower surface of the fixed plate (9) is fixedly connected to the upper surface of the base (1), and the inner wall of the fixed plate (9) is provided with a supporting plate (10).

3. The automated circuit board solder paste printing machine of claim 2, wherein: The inner wall of the fixed plate (9) is provided with a frame one (12), and the inner wall of the frame one (12) is slidably connected with a template (13).

4. The automated circuit board solder paste printing machine of claim 3, wherein: The inner wall of the template (13) is slidably connected with a sliding plate (14), the outer wall of the sliding plate (14) is fixedly connected with a limiting plate (15), and the outer wall of the limiting plate (15) is slidably connected to the inner wall of the template (13).

5. The automated circuit board solder paste printing machine of claim 4, wherein: The outer wall of the sliding plate (14) is fixedly connected with a spring (16), and the outer wall of the spring (16) is fixedly connected with a fixed frame (17).

6. The automated circuit board solder paste printing machine of claim 5, wherein: The outer wall of the sliding plate (14) is fixedly connected with a connecting column (18), and the outer wall of the connecting column (18) is slidably connected to the inner wall of the fixed frame (17).

7. The automated circuit board solder paste printing machine of claim 6, wherein: The outer wall of the connecting column (18) is fixedly connected with a clamping block (19), and the outer wall of the clamping block (19) is arranged in the inner wall of the frame one (12).

8. The automated circuit board solder paste printing machine of claim 7, wherein: The inner part of the frame one (12) is provided with a groove (20), and the outer wall of the clamping block (19) is arranged in the inner wall of the groove (20).

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