A SMT printing machine steel mesh positioning device

Abstract

The utility model relates to the field of SMT printers, and in particular to a steel mesh positioning device for an SMT printer. It comprises two substrates arranged vertically and symmetrically, a transverse clamping assembly, a longitudinal clamping assembly and a limiting assembly. The transverse clamping assembly is arranged between the two substrates to clamp and position the transverse sides of the steel mesh. The longitudinal clamping assembly is arranged on the transverse clamping assembly to clamp the longitudinal sides of the steel mesh. The limiting assembly is arranged on the two substrates to fix and limit the longitudinal clamping assembly. The utility model drives two clamping frames to move relative to each other by starting a driving mechanism to clamp the transverse sides of the steel mesh. By pushing a clamping plate 1 to both sides of the steel mesh, the longitudinal sides of the steel mesh are clamped. Then, a spring is used to push a rack 1 to engage with a rack 2 to limit the position of the clamping plate 1. The steel mesh can be stably clamped and positioned to prevent the steel mesh from shaking when applying solder paste or printing, thereby improving the accuracy of the printing position.

Description

Technical Field

[0001] The utility model relates to the field of SMT printers, in particular to a steel mesh positioning device for an SMT printer. Background Art

[0002] SMT printer is a widely used device in the electronics manufacturing industry. It is mainly used to print paste materials such as solder paste, adhesive or solder paste evenly on the surface of electronic components. SMT printer is mainly used in the surface mounting process in the electronics manufacturing industry. It is the first process in the entire SMT production line and also the key link in the production process.

[0003] A Chinese patent document with authorization announcement number CN220535190U proposes a positioning device for a high-precision fully automatic solder paste printer, including a workbench, a perforated plate is fixedly connected to the top left side of the workbench, motors are fixedly connected to the front and rear ends of the top left side of the workbench, threaded columns are fixedly connected to the output ends of the motors, lifting blocks are threadedly connected to the middle and upper parts of the threaded columns, and a through opening is provided in the middle and upper part of the perforated plate.

[0004] In the above application, although the circuit board is limited by being squeezed and fixed by extrusion plates one and two, and the lifting block moves up and down under the sliding limit of the slide groove, the steel mesh is not limited, which may cause the steel mesh to shake during printing, thereby causing printing deviations. Utility Model Content

[0005] In view of the problems existing in the background technology, a stencil positioning device for an SMT printer is proposed.

[0006] The utility model provides a steel mesh positioning device for an SMT printer, comprising two vertically symmetrically arranged substrates, a transverse clamping assembly, a longitudinal clamping assembly and a limiting assembly. The transverse clamping assembly is arranged between the two substrates to clamp and position the transverse sides of the steel mesh. The longitudinal clamping assembly is arranged on the transverse clamping assembly to clamp the longitudinal sides of the steel mesh. The limiting assembly is arranged on the two substrates to fix and limit the longitudinal clamping assembly.

[0007] Preferably, the transverse clamping assembly includes two bidirectional screw rods symmetrically rotatably connected between the two base plates; one end of the two bidirectional screw rods is connected to a driving mechanism, and two clamping frames are symmetrically threadedly connected to the two bidirectional screw rods.

[0008] Preferably, the two clamping frames are located opposite to each other and are both L-shaped.

[0009] Preferably, a slide groove 1 is provided on the side walls of the two base plates; a slide groove 2 is provided on the side walls of the two clamping frames; the longitudinal clamping assembly includes two clamping plates 1; the two clamping plates 1 respectively penetrate the two slide grooves 1 and the two slide grooves 2, and are slidingly connected to the two slide grooves 1 and the two slide grooves 2 respectively; a slide groove 3 is provided at the lower ends of the two clamping plates 1; two clamping plates 2 are symmetrically slidingly connected to the slide groove 3; the two clamping plates 2 are slidingly connected to the slide groove 4 provided at the bottom of the clamping frame respectively.

[0010] Preferably, the two clamping frames and the two clamping plates are arranged in parallel.

[0011] Preferably, the second slide groove is provided at the upper end of the side wall of the clamping frame.

[0012] Preferably, two groups of limit assemblies are symmetrically arranged about the two clamps; the limit assemblies include a fixed plate arranged on the side wall of the base plate; a plurality of springs are connected to the lower end of the fixed plate; the lower ends of the plurality of springs are commonly connected to a rack one; the upper ends of the two clamps are provided with a rack two that cooperates with and engages with the rack one.

[0013] Compared with the prior art, the utility model has the following beneficial technical effects:

[0014] (1) The SMT printer steel mesh positioning device starts the driving mechanism to drive the bidirectional screw to rotate, so that the two clamping frames move relative to each other to clamp the lateral sides of the steel mesh. By pushing the clamping plate 1 to the two sides of the steel mesh, the longitudinal sides of the steel mesh are clamped. Then the spring pushes the rack 1 to engage with the rack 2 to limit the position of the clamping plate 1. The steel mesh can be stably clamped and positioned to prevent the steel mesh from shaking when applying solder paste or printing, thereby ensuring that the solder paste is applied evenly and improving the accuracy of the printing position.

[0015] (2) The SMT printing machine steel mesh positioning device can slide along the first slide groove and the second slide groove to the two sides of the steel mesh through the clamping plate 1, and the clamping plate 2 can follow the clamping plate 1 to slide along the fourth slide groove to the two sides of the steel mesh, so that the position adjustment of the clamping plate 1 is more flexible, so that any type of steel mesh can be clamped, and the steel mesh can be positioned at different positions, thereby expanding the scope of application and meeting different needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the transverse clamping assembly of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the longitudinal clamping assembly and the limiting assembly of the utility model;

[0019] Figure 4It is a structural schematic diagram of the slide groove three and the clamping plate two of the utility model.

[0020] Figure numerals: 1. Base plate; 2. Horizontal clamping assembly; 21. Bidirectional screw rod; 22. Driving mechanism; 23. Clamping frame; 3. Longitudinal clamping assembly; 31. Slide groove one; 32. Slide groove two; 33. Clamping plate one; 34. Slide groove three; 35. Clamping plate two; 36. Slide groove four; 4. Limiting assembly; 41. Fixed plate; 42. Spring; 43. Rack one; 44. Rack two. DETAILED DESCRIPTION

[0021] like Figure 1-4 As shown, the utility model proposes a SMT printing machine steel mesh positioning device, comprising two vertically symmetrically arranged substrates 1, a transverse clamping assembly 2, a longitudinal clamping assembly 3 and a limiting assembly 4. The transverse clamping assembly 2 is arranged between the two substrates 1 to clamp and position the lateral sides of the steel mesh. The longitudinal clamping assembly 3 is arranged on the transverse clamping assembly 2 to clamp the longitudinal sides of the steel mesh. The limiting assembly 4 is arranged on the two substrates 1 to fix and limit the longitudinal clamping assembly 3.

[0022] Further explanation, the transverse clamping assembly 2 includes two bidirectional screw rods 21 symmetrically connected to the two base plates 1; one end of the two bidirectional screw rods 21 is connected to a driving mechanism 22, and two clamping frames 23 are symmetrically threadedly connected to the two bidirectional screw rods 21; the driving mechanism 22 is a motor. The clamping frames 23 can tighten and position the lateral sides of the steel mesh.

[0023] Further explanation, the two clamping frames 23 are opposite to each other and are both L-shaped. The bottom of the clamping frame 23 is used to place the steel mesh, and the side wall is used to clamp and position the steel mesh.

[0024] Further explanation, the side walls of the two base plates 1 are provided with a slide groove 1 31; the side walls of the two clamping frames 23 are provided with a slide groove 2 32; the longitudinal clamping assembly 3 includes two clamping plates 1 33; the two clamping plates 1 33 respectively penetrate the two slide grooves 1 31 and the two slide grooves 2 32, and are respectively slidably connected with the two slide grooves 1 31 and the two slide grooves 2 32; the lower ends of the two clamping plates 1 33 are provided with a slide groove 34; the slide grooves 3 34 are symmetrically slidably connected with two clamping plates 2 35; the two clamping plates 2 35 are respectively slidably connected with the slide grooves 4 36 provided at the bottom of the clamping frame 23. The two clamping plates 1 33 can clamp the steel mesh from both sides of the longitudinal direction of the steel mesh, and the position adjustment of the clamping plates 1 33 is relatively flexible, so that any type of steel mesh can be clamped, and the steel mesh can be positioned at different positions, thereby expanding the scope of application and meeting different needs. The setting of the clamping plates 2 35 enables the longitudinal clamping assembly 3 to clamp a relatively flat steel mesh.

[0025] Further explanation, the two clamping frames 23 and the two clamping plates 33 are arranged in parallel to make the position of the steel mesh regular and avoid the steel mesh being skewed, thereby affecting printing.

[0026] Further explanation, the second slide slot 32 is provided at the upper end of the side wall of the clamping frame 23. This prevents the steel mesh from extending from the second slide slot 32, thereby causing the clamping frame 23 to lose its positioning function on the steel mesh.

[0027] Further explanation, the limiting assembly 4 is symmetrically arranged with two groups about the two clamping plates 1 33; the limiting assembly 4 includes a fixing plate 41 arranged at the side wall of the base plate 1; the lower end of the fixing plate 41 is connected with a plurality of springs 42; the lower ends of the plurality of springs 42 are commonly connected with a rack 1 43; the upper ends of the two clamping plates 1 33 are provided with a rack 2 44 that is engaged with the rack 1 43. The two clamping plates 1 33 can be limited to avoid the position of the clamping plates 1 33 from being offset, so that the clamping of the clamping plates 1 33 on the steel mesh is more stable.

[0028] The transverse clamping component 2, the longitudinal clamping component 3 and the limiting component 4 cooperate with each other to stably clamp the steel mesh, thereby preventing the steel mesh from shaking when applying solder paste or printing, thereby ensuring smooth application of the solder paste and improving the accuracy of the printing position.

[0029] The working principle of the utility model is as follows: two substrates 1 are fixedly installed in the printing machine respectively. When working, the steel mesh is first placed on the two clamping frames 23, and then the driving mechanism 22 is started to drive the bidirectional screw 21 to rotate, so that the two clamping frames 23 move relative to each other and clamp the lateral sides of the steel mesh. When the clamping frames 23 move, the second clamping plate 35 will follow the clamping frames 23 to slide in the sliding groove 34. Then push the steel mesh to a suitable position along the two clamping frames 23, and lift the rack 1 43 upwards, so that the rack 1 43 compresses the spring 42, and pushes the clamping plate 1 33 along the sliding groove 1 31 and the second sliding groove 32 to the two sides of the steel mesh, so that the second clamping plate 35 follows the clamping plate 1 33 to slide along the sliding groove 4 36 to the two sides of the steel mesh, and clamps the longitudinal sides of the steel mesh. Then loosen the rack 1 43, so that the spring 42 pushes the rack 1 43 to engage with the rack 2 44, and limits the clamping plate 1 33.

[0030] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A steel mesh positioning device for an SMT printer, characterized in that: include Two substrates (1) arranged vertically symmetrically; A lateral clamping assembly (2) is arranged between the two base plates (1) and is used to clamp and position the lateral sides of the steel mesh; A longitudinal clamping assembly (3) is arranged on the transverse clamping assembly (2) and clamps both longitudinal sides of the steel mesh; And a limiting component (4) is arranged on the two base plates (1) and is used to fix and limit the longitudinal clamping component (3).

2. The SMT printing machine steel mesh positioning device according to claim 1, characterized in that: The transverse clamping assembly (2) comprises two bidirectional screw rods (21) symmetrically rotatably connected between two base plates (1); one end of the two bidirectional screw rods (21) is connected to a driving mechanism (22), and two clamping frames (23) are symmetrically threadedly connected to the two bidirectional screw rods (21).

3. The SMT printing machine steel mesh positioning device according to claim 2, characterized in that: The two clamping frames (23) are located opposite to each other and are both L-shaped.

4. The SMT printing machine steel mesh positioning device according to claim 3, characterized in that: The side walls of the two base plates (1) are provided with a first slide groove (31); the side walls of the two clamping frames (23) are provided with a second slide groove (32); the longitudinal clamping assembly (3) comprises two first clamping plates (33); the two first clamping plates (33) respectively penetrate the two first slide grooves (31) and the two second slide grooves (32), and are respectively slidably connected to the two first slide grooves (31) and the two second slide grooves (32); the lower ends of the two first clamping plates (33) are provided with a third slide groove (34); the third slide groove (34) is symmetrically slidably connected with two second clamping plates (35); the two second clamping plates (35) are respectively slidably connected to the fourth slide groove (36) provided at the bottom of the clamping frame (23).

5. The SMT printing machine steel mesh positioning device according to claim 4, characterized in that: The two clamping frames (23) and the two clamping plates (33) are arranged in parallel.

6. The SMT printing machine steel mesh positioning device according to claim 4, characterized in that: The second slide groove (32) is arranged on the upper end of the side wall of the clamping frame (23).

7. The SMT printing machine steel mesh positioning device according to claim 5, characterized in that: The limiting assembly (4) has two groups symmetrically arranged about the two clamping plates (33); the limiting assembly (4) comprises a fixing plate (41) arranged on the side wall of the base plate (1); the lower end of the fixing plate (41) is connected to a plurality of springs (42); the lower ends of the plurality of springs (42) are commonly connected to a rack (43); the upper ends of the two clamping plates (33) are each provided with a rack (44) that cooperates with the rack (43) and is clamped.

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