A tin paste printing machine for SMT printing

Abstract

The utility model discloses a kind of tin paste printing machines for SMT printing, it is related to SMT printing technical field, including printing component, the lower of this printing component is equipped with transfer component;The two sides of printing component are respectively fixedly connected with two displacement components;Two displacement components are respectively fixedly connected with two support frames;The bottom of transfer component and two support frames are fixedly connected with the top of rack body;The printing component includes multiple printing heads, the top of multiple printing heads is respectively fixedly connected with the telescopic link of multiple cylinder two;Multiple cylinder two are all installed in the inboard of sliding seat one;Cylinder one can drive multiple printing heads to move horizontally, so that multiple printing heads scrape tin paste on the gauze of gauze plate, cylinder two can drive multiple printing heads to move vertically, distance sensor detects the thickness of tin paste liquid layer in real time, when the thickness of tin paste liquid layer is inconsistent, by changing the height of multiple printing heads, the tin paste printing thickness of PCB different positions can be same.

Description

Technical Field

[0001] This utility model relates to the field of SMT printing technology, specifically to a solder paste printer for SMT printing. Background Technology

[0002] SMT printing is a key process in surface mount technology, mainly used to accurately print materials such as solder paste onto designated locations on a printed circuit board (PCB) to prepare for subsequent component mounting and soldering.

[0003] Chinese Patent Publication No. CN 218735268 U discloses a printing machine, particularly an SMT solder paste printing machine. This utility model provides an SMT solder paste printing machine with a cleaning function. The SMT solder paste printing machine includes a housing, a motor, a first screw, a moving block, guide rods, a storage frame, and a cap. The motor is mounted on the right side of the housing, and the output shaft of the motor is connected to the first screw via a coupling. A moving block is threaded onto the first screw. Guide rods are connected to both the front and rear sides inside the housing, and the moving block slides between the two guide rods. A storage frame is slidably mounted below the moving block. Caps are rotatably mounted on both the front and rear sides of the top of the storage frame. A brush wheel is rotatably mounted inside the lower part of the storage frame.

[0004] In the aforementioned printing machine, the squeegee scrapes the solder paste on the brush plate to perform the printing work; however, the brush plate of the aforementioned printing machine is located inside the printing machine, and the printing plate cannot be moved. Therefore, when loading and unloading PCBs, manual operation is required, and the operator's hands need to enter the printing machine. This can easily cause the solder paste in the brush to stick to the operator's body, which not only leads to the waste of solder paste, but also causes uneven thickness of the solder paste layer. Utility Model Content

[0005] The purpose of this invention is to provide a solder paste printing machine for SMT printing, wherein the transfer component can move the carrier board and the mesh board used to place the PCB laterally, and will move away from the solder paste during loading and unloading, so as to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A solder paste printer for SMT printing includes a printing assembly, with a transfer assembly located below the printing assembly; two displacement assemblies are fixedly connected to both sides of the printing assembly; the two displacement assemblies are fixedly connected to two support frames; and the bottoms of the transfer assembly and the two support frames are fixedly connected to the top of the machine frame.

[0008] The printing assembly includes multiple printing heads, the tops of which are fixedly connected to the telescopic rods of multiple cylinders 2; multiple cylinders 2 are installed inside slide 1, and multiple printing heads are located below slide 1; one side of slide 1 is fixedly connected to the telescopic rod of cylinder 1; both ends of slide 1 are slidably connected to two guide rods 1, and the ends of the two guide rods 1 are fixedly connected to the inner wall of the plate frame.

[0009] The transfer assembly includes a platform with a mesh plate on top and a mesh in the middle; the mesh plate is located below multiple printing heads; one end of the platform is fixedly connected to the telescopic rod of cylinder three.

[0010] The displacement assembly includes a slide block two, which is fixedly connected to the middle of one side of the plate frame; the top middle of the slide block two is fixedly connected to the telescopic rod of the cylinder four.

[0011] As a further technical solution of this utility model, auxiliary rods are fixedly connected to the top of both ends of the plurality of printing heads, and the ends of the plurality of auxiliary rods away from the printing heads are all located above the slide block. The slide block is provided with a plurality of through holes for the auxiliary rods to pass through. A plurality of limiting blocks are provided above the slide block, and the two ends of the plurality of limiting blocks are fixedly connected to the plurality of auxiliary rods respectively.

[0012] As a further technical solution of this utility model, the slide block and multiple printing heads are all located inside the plate frame; the cylinder is located outside the plate frame and is fixedly connected to the plate frame, and the plate frame is provided with a through hole for the extension rod of the cylinder to pass through; two blocks are symmetrically arranged on one side of the inner side of the plate frame, and the slide block is located between the two blocks.

[0013] As a further technical solution of this utility model, a distance sensor is fixedly connected to the bottom of the slide block, and the distance sensor is located on the outer side of one end of the plurality of printing heads.

[0014] As a further technical solution of this utility model, multiple sliders are fixedly connected to both sides of the bottom of the platform, and the multiple sliders are slidably connected to multiple guide rods; both ends of the multiple guide rods are fixedly connected to the inner wall of the support frame.

[0015] As a further technical solution of this utility model, the multiple sliders and the platform are all located inside the support frame; the cylinder is located outside the support frame and is fixedly connected to the support frame, and the support frame is provided with a through hole for the extension rod of the cylinder to pass through; the bottom of the support frame is fixedly connected to the top of the frame.

[0016] As a further technical solution of this utility model, both ends of the slide block two are fixedly connected to connecting seats, and the two connecting seats are slidably connected to the two guide rods three respectively; both ends of the two guide rods three are fixedly connected to the vertical frame; the lower end of the vertical frame is fixedly connected to the support frame.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. In this utility model, cylinder one can drive multiple printing heads to move laterally, thereby allowing multiple printing heads to scrape solder paste on the mesh of the stencil. Cylinder two can drive multiple printing heads to move vertically. A distance sensor detects the thickness of the solder paste layer in real time. When the thickness of the solder paste layer is inconsistent, by changing the height of multiple printing heads, the solder paste printing thickness at different positions on the PCB can be made the same.

[0019] 2. In this utility model, cylinder three can drive the platform and screen plate to move laterally. During loading and unloading, the platform and screen plate move to the outside of the frame, which not only makes it convenient for workers to place and pick up PCBs, but also prevents solder paste from sticking to the workers. During loading and unloading, slide two drives the frame to rise, thereby raising multiple printing heads further and ensuring that multiple printing heads do not obstruct the normal movement of the platform and screen plate. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 This utility model Figure 1 Another perspective view.

[0022] Figure 3 This is a three-dimensional structural diagram of the printing component of this utility model.

[0023] Figure 4 This utility model Figure 3 Another perspective view.

[0024] Figure 5 This is a three-dimensional structural diagram of the transfer component of this utility model.

[0025] Figure 6 This utility model Figure 5 Another perspective view.

[0026] Figure 7 This is a three-dimensional structural diagram of the displacement component of this utility model.

[0027] Figure 8 This utility model Figure 7 Another perspective view.

[0028] In the diagram: 1-Printing assembly, 2-Transfer assembly, 3-Displacement assembly, 4-Frame, 5-Support frame;

[0029] 11-Stop, 12-Frame, 13-Cylinder 1, 14-Slide 1, 15-Guide Rod 1, 16-Printing Head, 17-Auxiliary Rod, 18-Limit Block, 19-Cylinder 2, 21-Support Frame, 22-Screen Plate, 23-Cylinder 3, 24-Guide Rod 2, 25-Slider, 31-Vertical Frame, 32-Slide 2, 33-Cylinder 4, 34-Guide Rod 3, 35-Connecting Seat. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figure 1-8 In this embodiment of the present invention, a solder paste printing machine for SMT printing includes a printing component 1, a transfer component 2 is provided below the printing component 1; the two sides of the printing component 1 are respectively fixedly connected to two displacement components 3; the two displacement components 3 are respectively fixedly connected to two support frames 5; the bottom of the transfer component 2 and the two support frames 5 are both fixedly connected to the top of the frame body 4.

[0032] The printing assembly 1 includes multiple printing heads 16, the tops of which are fixedly connected to the telescopic rods of multiple cylinders 19; the multiple cylinders 19 are all installed inside the slide 14, and the multiple printing heads 16 are all located below the slide 14; one side of the slide 14 is fixedly connected to the telescopic rod of cylinder 13; both ends of the slide 14 are slidably connected to two guide rods 15, and the ends of the two guide rods 15 are fixedly connected to the inner wall of the frame 12.

[0033] The transfer assembly 2 includes a platform with a mesh plate 22 on top and a mesh in the middle of the mesh plate 22; the mesh plate 22 is located below a plurality of printing heads 16; one end of the platform is fixedly connected to the telescopic rod of the cylinder 23.

[0034] The displacement component 3 includes a slide block 32, which is fixedly connected to the middle of one side of the plate frame 12; the top middle of the slide block 32 is fixedly connected to the telescopic rod of the cylinder 33.

[0035] Each of the two ends of the multiple printing heads 16 is fixedly connected to an auxiliary rod 17, and the ends of the multiple auxiliary rods 17 away from the printing heads 16 are located above the slide block 14. The slide block 14 is provided with multiple through holes for the auxiliary rods 17 to pass through. Multiple limiting blocks 18 are provided above the slide block 14, and the two ends of the multiple limiting blocks 18 are fixedly connected to the multiple auxiliary rods 17 respectively.

[0036] The slide block 14 and multiple printing heads 16 are located inside the plate frame 12; the cylinder 13 is located outside the plate frame 12 and is fixedly connected to the plate frame 12, and the plate frame 12 is provided with a through hole for the extension rod of the cylinder 13 to pass through; two stops 11 are symmetrically provided on one side of the inner side of the plate frame 12, and the slide block 14 is located between the two stops 11.

[0037] By adopting the above technical solution, cylinder 13 can drive multiple printing heads 16 to move laterally, thereby allowing multiple printing heads 16 to scrape solder paste on the mesh of the mesh board 22. Cylinder 29 can drive multiple printing heads 16 to move vertically. The distance sensor detects the thickness of the solder paste liquid layer in real time. When the thickness of the solder paste liquid layer is inconsistent, by changing the height of multiple printing heads 16, the solder paste printing thickness at different positions of the PCB can be made the same.

[0038] In this embodiment, a distance sensor is fixedly connected to the bottom of the slide block 14, and the distance sensor is located on the outer side of one end of the plurality of printing heads 16.

[0039] Multiple sliders 25 are fixedly connected to both sides of the bottom of the platform, and the multiple sliders 25 are slidably connected to multiple guide rods 24 respectively; both ends of the multiple guide rods 24 are fixedly connected to the inner wall of the support frame 21.

[0040] The multiple sliders 25 and the platform are located inside the support frame 21; the cylinder 23 is located outside the support frame 21 and is fixedly connected to the support frame 21, and the support frame 21 is provided with a through hole for the extension rod of the cylinder 23 to pass through; the bottom of the support frame 21 is fixedly connected to the top of the frame body 4.

[0041] Both ends of the slide block 32 are fixedly connected to connecting seats 35, and the two connecting seats 35 are slidably connected to the two guide rods 34 respectively; both ends of the two guide rods 34 are fixedly connected to the vertical frame 31; the lower end of the vertical frame 31 is fixedly connected to the support frame 5.

[0042] By adopting the above technical solution, cylinder 3 23 can drive the stage and screen plate 22 to move laterally. During loading and unloading, the stage and screen plate 22 move to the outside of the frame 12, which can facilitate the placement and removal of PCBs by the staff and prevent solder paste from sticking to the staff. During loading and unloading, slide 2 32 drives the frame 12 to rise, thereby raising the multiple printing heads 16 further and ensuring that the multiple printing heads 16 do not obstruct the normal movement of the stage and screen plate 22.

[0043] The working principle of this utility model is as follows: Cylinder 13 can drive multiple printing heads 16 to move laterally, thereby allowing multiple printing heads 16 to scrape solder paste on the mesh of the mesh board 22. Cylinder 29 can drive multiple printing heads 16 to move vertically. The distance sensor detects the thickness of the solder paste liquid layer in real time. When the thickness of the solder paste liquid layer is inconsistent, by changing the height of multiple printing heads 16, the solder paste printing thickness at different positions of the PCB can be made the same.

[0044] Cylinder 3 23 can drive the stage and screen plate 22 to move laterally. During loading and unloading, the stage and screen plate 22 move to the outside of the board frame 12, which can facilitate the placement and removal of PCBs by the staff and prevent solder paste from sticking to the staff. During loading and unloading, slide 2 32 drives the board frame 12 to rise, thereby raising the multiple printing heads 16 further to ensure that the multiple printing heads 16 do not obstruct the normal movement of the stage and screen plate 22.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A solder paste printing machine for SMT printing, characterized in that: The printing assembly (1) includes a printing component (1) with a transfer component (2) below it; the two sides of the printing component (1) are fixedly connected to two displacement components (3); the two displacement components (3) are fixedly connected to two support frames (5); the bottom of the transfer component (2) and the two support frames (5) are fixedly connected to the top of the frame body (4). The printing assembly (1) includes multiple printing heads (16), the tops of which are fixedly connected to the telescopic rods of multiple cylinders (19); multiple cylinders (19) are installed on the inner side of slide (14), and multiple printing heads (16) are located below slide (14); one side of slide (14) is fixedly connected to the telescopic rod of cylinder (13); both ends of slide (14) are slidably connected to two guide rods (15), and the ends of the two guide rods (15) are fixedly connected to the inner wall of the frame (12); The transfer assembly (2) includes a platform with a mesh plate (22) on top and a mesh in the middle of the mesh plate (22); the mesh plate (22) is located below multiple printing heads (16); one end of the platform is fixedly connected to the telescopic rod of cylinder three (23). The displacement component (3) includes a slide block two (32), and the slide block two (32) is fixedly connected to the middle of one side of the plate frame (12); the top middle of the slide block two (32) is fixedly connected to the telescopic rod of the cylinder four (33).

2. The solder paste printer for SMT printing according to claim 1, characterized in that: Each of the two ends of the multiple printing heads (16) is fixedly connected to an auxiliary rod (17), and the ends of the multiple auxiliary rods (17) away from the printing heads (16) are all located above the slide block (14). The slide block (14) is provided with multiple through holes for the auxiliary rods (17) to pass through. Multiple limiting blocks (18) are provided above the slide block (14), and the two ends of the multiple limiting blocks (18) are fixedly connected to the multiple auxiliary rods (17) respectively.

3. The solder paste printer for SMT printing according to claim 1, characterized in that: The slide block (14) and multiple printing heads (16) are located inside the plate frame (12); the cylinder (13) is located outside the plate frame (12) and is fixedly connected to the plate frame (12), and the plate frame (12) is provided with a through hole for the extension rod of the cylinder (13) to pass through; two blocks (11) are symmetrically provided on one side of the inner side of the plate frame (12), and the slide block (14) is located between the two blocks (11).

4. The solder paste printer for SMT printing according to claim 1, characterized in that: A distance sensor is fixedly connected to the bottom of the slide (14), and the distance sensor is located on the outer side of one end of the plurality of printing heads (16).

5. The solder paste printer for SMT printing according to claim 1, characterized in that: Multiple sliders (25) are fixedly connected to both sides of the bottom of the platform. The multiple sliders (25) are slidably connected to multiple guide rods (24). Both ends of the multiple guide rods (24) are fixedly connected to the inner wall of the support frame (21).

6. The solder paste printer for SMT printing according to claim 5, characterized in that: Multiple sliders (25) and the platform are located inside the support frame (21); the cylinder three (23) is located outside the support frame (21) and is fixedly connected to the support frame (21), and the support frame (21) is provided with a through hole for the telescopic rod of the cylinder three (23) to pass through; the bottom of the support frame (21) is fixedly connected to the top of the frame body (4).

7. The solder paste printer for SMT printing according to claim 1, characterized in that: Both ends of the slide block two (32) are fixedly connected to the connecting seat (35), and the two connecting seats (35) are slidably connected to the two guide rods three (34) respectively; both ends of the two guide rods three (34) are fixedly connected to the vertical frame (31); the lower end of the vertical frame (31) is fixedly connected to the support frame (5).

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