Micro-pore accurate printing PCB steel mesh

Abstract

The utility model relates to the field of steel meshes, in particular to a micropore accurate printing PCB (printed circuit board) steel mesh. The fixing mechanism comprises a PCB and a steel mesh used in cooperation with the PCB, and further comprises a first suction cup used for being adsorbed to the workbench, the fixing mechanism is rotationally connected with a rotating assembly used for driving the base plate assembly to rotate, the base plate assembly is rotationally connected with a compressible pressing rod assembly, and the pressing rod assembly is provided with a second suction cup used for adsorbing the PCB. A plurality of clamping assemblies used for clamping and positioning the PCBs and the steel mesh are further connected to the base plate assembly in a sliding mode. Through the arrangement of the base plate assembly and the clamping assembly, the base plate assembly rotates conveniently to drive the sliding rods to slide in the guide grooves, so that the clamping plates are driven to gather inwards, and clamping and positioning of the PCB and the steel mesh are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel meshes, in particular to a microporous precise printing PCB steel mesh. Background Art

[0002] PCB stencil is a metal mesh, usually woven from steel wire or stainless steel wire. Its main function is to imprint printing ink onto the substrate through the mesh holes during PCB manufacturing to form a circuit pattern; the design and aperture of the stencil correspond to the position of the soldering points on the circuit board, ensuring that the solder paste is deposited in the correct position, thereby achieving precise installation of electronic components.

[0003] In actual operation, the stencil is usually manually aligned and fixed on the PCB board, and then the solder paste is manually applied. However, this manual operation method often has risks, because slight uneven force or operating errors may cause the stencil to shift, which directly affects the accuracy of subsequent welding; and the alignment and fixation of the auxiliary stencil is extremely important.

[0004] Therefore, there is an urgent need to provide a microporous precision printing PCB steel mesh to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a micro-hole precision printing PCB steel mesh to solve the problem of inaccurate alignment and fixing of the existing PCB steel mesh proposed in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a microporous precision printing PCB steel mesh, including a PCB board and a matching steel mesh.

[0007] In order to solve the problem of inaccurate alignment and fixation of the existing PCB steel mesh, it also includes a first suction cup for adsorbing on the workbench, the first suction cup is rotatably connected to a fixing mechanism for further strengthening the adsorption force of the first suction cup, the fixing mechanism is rotatably connected to a rotating assembly for driving the chassis assembly to rotate, the chassis assembly is arranged directly above the rotating assembly and fixedly connected thereto, the chassis assembly is rotatably connected to a compressible pressure rod assembly, and the pressure rod assembly is provided with a second suction cup for adsorbing the PCB board;

[0008] The chassis assembly is also slidably connected to a plurality of clamping assemblies for clamping and positioning the PCB board and the steel mesh;

[0009] The chassis assembly comprises a turntable, on which a plurality of arc-shaped guide grooves are formed, and inside the guide grooves a slider is slidably connected;

[0010] The clamping assembly includes a sliding rod rotatably connected to the slider, and a clamping plate for clamping and positioning is provided on one end of the sliding rod extending to the outside through the turntable, and the sliding rod is slidably connected to the turntable. A support rod for limiting the rotation of the sliding rod is also provided on the sliding rod, and the support rod is fixedly connected to the first suction cup. By setting the chassis assembly and the clamping assembly, the rotation of the chassis assembly is convenient to drive the sliding rod to slide in the guide groove, thereby driving the clamping plate to gather inward, thereby achieving clamping and positioning of the PCB board and the steel mesh, ensuring the accuracy and stability of the alignment, and thus being able to effectively solve the problem of inaccurate alignment and fixation of the existing PCB steel mesh.

[0011] As a further improvement of the present technical solution, the fixing mechanism includes a first rotating cylinder rotatably connected to the first suction cup, a sliding cavity and a threaded cavity are provided in the first rotating cylinder, and an air suction component for absorbing the remaining air in the first suction cup is provided in the sliding cavity; by providing the first suction cup and the second suction cup, it is beneficial for the PCB board and the steel mesh to be firmly adsorbed on the device, ensuring that no displacement occurs during operation, thereby ensuring the alignment accuracy of the PCB board and the steel mesh, and the suction cup plays a role in protecting the PCB board.

[0012] As a further improvement of the present technical solution, the suction assembly includes a connecting rod and an suction box fixedly connected to one side of the first suction cup, an air hole connected to the suction box is opened on one side of the first suction cup, one end of the connecting rod is fixedly connected to a piston plate used to extract the remaining air in the first suction cup, and the other end is fixedly connected to a threaded disk threadedly connected to the threaded cavity, and is used to drive the threaded disk to move upward when the first rotating drum rotates; by setting a rotating assembly and a limiting assembly, it is beneficial to drive the chassis assembly to rotate through the rotation of the second rotating drum, and at the same time, the rotation of the chassis assembly is limited by the cooperation of the limiting block and the limiting groove, thereby ensuring that the position of the chassis assembly can be fixed when needed, and avoiding alignment errors caused by misoperation.

[0013] As a further improvement of the technical solution, the suction box and the piston plate are matched and both are rectangular, and are designed to limit the rotation of the piston plate.

[0014] As a further improvement of the technical solution, the rotating assembly includes a second rotating drum, and a plurality of limiting grooves for use with the limiting assembly to limit the rotation of the turntable are opened at the bottom end of the second rotating drum.

[0015] As a further improvement of the present technical solution, the limit assembly has a limit box, the limit box is fixedly connected to one side of the first rotating drum, a first limit rod is movably connected inside the limit box, a second spring is fixedly connected to the bottom end of the first limit rod, a limit block matched with the limit groove is fixedly connected to the top end thereof, a second limit rod is fixedly connected to the first limit rod, and a slide groove matched with the second limit rod is provided on the limit box.

[0016] As a further improvement of the present technical solution, the slide groove is in a T-shaped structure or an L-shaped structure, a vertical section of which is used for the second limit rod to slide up and down, and a horizontal section is used to engage the second limit rod to restrict its up and down sliding.

[0017] As a further improvement of the technical solution, the pressure rod assembly includes a pressure cylinder, the material of which is soft and compressible, and a first spring is fixedly arranged in the pressure cylinder.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. The microporous precision printing PCB steel mesh is conducive to the PCB board and the steel mesh being firmly adsorbed on the device by setting the first suction cup and the second suction cup, ensuring that no displacement occurs during operation, thereby ensuring the alignment accuracy of the PCB board and the steel mesh, and the suction cup plays a role in protecting the PCB board; by setting the fixing mechanism and the suction component, it is convenient to rotate the first rotating cylinder and use the thread transmission principle to drive the piston plate to move in the suction box, thereby extracting the remaining air in the first suction cup, enhancing the adsorption force of the first suction cup, and further improving the stability and reliability of the device.

[0020] 2. This microporous precision-printed PCB steel mesh, by setting a chassis component and a clamping component, facilitates the rotation of the chassis component to drive the slide bar to slide in the guide groove, thereby driving the clamping plate to gather inward, achieving clamping and positioning of the PCB board and the steel mesh, and ensuring the accuracy and stability of alignment.

[0021] 3. This microporous precision printing PCB steel mesh, by setting a rotating component and a limiting component, is conducive to driving the chassis component to rotate through the rotation of the second rotating drum, and at the same time uses the cooperation of the limiting block and the limiting groove to limit the rotation of the chassis component, ensuring that the position of the chassis component can be fixed when needed, avoiding alignment errors caused by misoperation.

[0022] 4. This microporous precision-printed PCB steel mesh, by setting a compressible pressure rod assembly, is conducive to providing a certain buffer when the PCB board is adsorbed with the second suction cup, preventing the PCB board from being damaged due to direct impact, and also ensuring that the PCB board can completely fit the second suction cup to improve the adsorption effect; at the same time, when replacing the steel mesh, the PCB board and the steel mesh can be kept level with the clamping plate by pressing down. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a top view of the overall structure of the utility model;

[0025] Figure 3 It is a cross-sectional view of the overall structure of the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the limit assembly of the utility model;

[0027] Figure 5 for Figure 3 A magnified view of the structure at A.

[0028] The meaning of each number in the figure is:

[0029] 1. First suction cup; 2. Fixing mechanism; 3. Rotating assembly; 4. Chassis assembly; 5. Second suction cup; 6. Clamping assembly; 7. Pressure rod assembly; 8. Limiting assembly; 9. Air hole;

[0030] 21. first rotating drum; 22. air suction assembly; 23. sliding cavity; 24. threaded cavity;

[0031] 31. second rotating drum; 32. limiting groove;

[0032] 41. turntable; 42. guide groove; 43. slider;

[0033] 61. Sliding rod; 62. Clamping plate; 63. Support rod;

[0034] 71. a pressure cylinder; 72. a first spring;

[0035] 81. Limit box; 82. First limit rod; 83. Second limit rod; 84. Slide slot; 85. Second spring; 86. Limit block;

[0036] 221. Connecting rod; 222. Piston plate; 223. Threaded disk; 224. Suction box. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" or "several" is two or more, unless otherwise clearly and specifically defined.

[0040] See also Figure 1-Figure 2 As shown, the purpose of this embodiment is to provide a micro-porous precision printing PCB steel mesh, including a PCB board and a matching steel mesh.

[0041] For further information, see Figure 1-Figure 3 As shown, it also includes a first suction cup 1 for adsorbing on a workbench, a fixing mechanism 2 is rotatably connected to the first suction cup 1 for further strengthening the adsorption force of the first suction cup 1, a rotating assembly 3 for driving a chassis assembly 4 to rotate is rotatably connected to the fixing mechanism 2, the chassis assembly 4 is arranged directly above the rotating assembly 3 and is fixedly connected thereto, a compressible pressure rod assembly 7 is rotatably connected to the chassis assembly 4, and a second suction cup 5 for adsorbing a PCB board is arranged on the pressure rod assembly 7;

[0042] The chassis assembly 4 is also slidably connected to a plurality of clamping assemblies 6 for clamping and positioning the PCB board and the steel mesh;

[0043] The chassis assembly 4 includes a rotating disk 41, on which a plurality of arc-shaped guide grooves 42 are formed, and a slider 43 is slidably connected in the guide grooves 42;

[0044] The clamping assembly 6 includes a slide bar 61 rotatably connected to the slider 43, and a clamping plate 62 for clamping and positioning is provided on one end of the slide bar 61 extending to the outside through the turntable 41, and the slide bar 61 is slidably connected to the turntable 41. The slide bar 61 is also provided with a support rod 63 for limiting the rotation of the slide bar 61, which is fixedly connected to the first suction cup 1; the second rotating cylinder 31 is rotated, thereby driving the turntable 41 thereon to rotate, causing the slide bar 43 to slide in the guide groove 42 on the turntable 41. Since the slide bar 43 is rotatably connected to the slide bar 61, and the slide bar 61 is slidably connected to the turntable 41, and its rotation is limited by the support rod 63, the rotation of the turntable 41 causes a number of slide bars 61 to only move horizontally forward and backward, and then the slide bars 61 move inward together, so that the clamping plates 62 thereon gather inward together to clamp the PCB board.

[0045] For further information, see Figure 3 As shown, the fixing mechanism 2 includes a first rotating cylinder 21 rotatably connected to the first suction cup 1 , a sliding cavity 23 and a threaded cavity 24 are provided in the first rotating cylinder 21 , and an air suction component 22 for absorbing the remaining air in the first suction cup 1 is provided in the sliding cavity 23 .

[0046] For details, please refer to Figure 3 As shown, the suction assembly 22 includes a connecting rod 221 and an suction box 224 fixedly connected to one side of the first suction cup 1, and an air hole 9 connected to the suction box 224 is opened on one side of the first suction cup 1. One end of the connecting rod 221 is fixedly connected to a piston plate 222 for extracting the remaining air in the first suction cup 1, and the other end is fixedly connected to a threaded disk 223 threadedly connected to the threaded cavity 24, which is used to drive the threaded disk 223 to move upward when the first rotating cylinder 21 rotates; the first rotating cylinder 21 is rotated, and its rotation drives the threaded disk 223 to rotate and move upward through the threaded cavity 24 inside it, and then drives the piston plate 222 to move upward in the suction box 224 through the connecting rod 221, and then extracts the remaining air in the first suction cup 1 through the air hole 9, so that the first suction cup 1 is adsorbed more firmly.

[0047] For further information, see Figure 3 As shown, the suction box 224 and the piston plate 222 are matched and both are rectangular, and are designed to limit the rotation of the piston plate 222.

[0048] For further information, see Figure 3-Figure 5 As shown, the rotating assembly 3 includes a second rotating drum 31 , and a plurality of limiting grooves 32 are provided at the bottom end of the second rotating drum 31 for use in conjunction with the limiting assembly 8 to limit the rotation of the turntable 41 .

[0049] For details, please refer to Figure 4As shown, the limit assembly 8 has a limit box 81, the limit box 81 is fixedly connected to one side of the first rotating drum 21, a first limit rod 82 is movably connected inside the limit box 81, a second spring 85 is fixedly connected to the bottom end of the first limit rod 82, a limit block 86 matched with the limit groove 32 is fixedly connected to the top end thereof, a second limit rod 83 is fixedly connected to the first limit rod 82, and a slide groove 84 matched with the second limit rod 83 is provided on the limit box 81; the second limit rod 83 is rotated to disengage from the engaging position of the slide groove 84, and then the second spring 85 causes it to slide upward along the slide groove 84, and then the limit block 86 is engaged with the limit groove 32 at the bottom of the second rotating drum 31, thereby limiting the rotation of the turntable 41.

[0050] Also, see Figure 4 As shown, the slide groove 84 is in a T-shaped structure or an L-shaped structure, wherein a vertical section is used for the second limiting rod 83 to slide up and down, and a horizontal section is used for engaging the second limiting rod 83 to limit its upward and downward sliding.

[0051] In addition, see Figure 3 As shown, the pressure rod assembly 7 includes a pressure cylinder 71 , which is made of a soft and compressible material, and a first spring 72 is fixedly disposed in the pressure cylinder 71 .

[0052] The specific working principle is as follows:

[0053] When in use, first fix the first suction cup 1 on the workbench, then rotate the first rotating cylinder 21, and its rotation drives the threaded disk 223 to rotate and move upward through the threaded cavity 24 inside it, and then drives the piston plate 222 to move upward in the suction box 224 through the connecting rod 221, and then the remaining air in the first suction cup 1 is extracted through the air hole 9, so that the first suction cup 1 is more firmly adsorbed, and the threaded disk 223 is threadedly connected with the threaded cavity 24, so it also plays a limiting role, so that it will not move up and down at will; at this time, gently put the PCB board On the second suction cup 5, the second rotating cylinder 31 is then rotated, thereby driving the rotating disk 41 thereon to rotate, causing the slider 43 to slide in the guide groove 42 on the rotating disk 41. Since the slider 43 is rotatably connected to the slide bar 61, and the slide bar 61 is slidably connected to the rotating disk 41 and is restricted from rotating by the support rod 63, the rotation of the rotating disk 41 causes the plurality of slide bars 61 to only move horizontally forward and backward, and then the slide bars 61 move inward together, so that the clamping plates 62 thereon gather inward together to clamp the PCB board. In the figure, there are four clamping plates 62 in four directions. The PCB board is evenly distributed around the circumference, and the specific number is set according to the demand. At the same time, due to the gathering of several clamping plates 62, the PCB board is positioned at the center of the second suction cup 5; at this time, the PCB board is pressed downward, so that the PCB board and the second suction cup 5 are firmly adsorbed, and then the second rotating cylinder 31 is rotated in the opposite direction according to the same steps as the PCB board, so that the clamping plates 62 loosen the PCB board, and then the steel mesh is re-clamped and positioned until the steel mesh and the PCB board are also in the center of the second suction cup 5. Since the PCB board has been fixed by the second suction cup 5, The PCB board and the steel mesh can be accurately aligned and positioned by only clamping the steel mesh with the clamping plate 62; at this time, the second limit rod 83 is rotated to disengage it from the engaging position of the slide groove 84, and then the second spring 85 causes it to slide upward along the slide groove 84, so that the limit block 86 is engaged with the limit groove 32 at the bottom of the second rotating cylinder 31, thereby limiting the rotation of the turntable 41, so that the clamping plate 62 thereon tightly clamps and fixes the steel mesh; thereby effectively solving the problem of inaccurate alignment and fixation of the existing PCB steel mesh.

[0054] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A microporous precision printing PCB steel mesh, comprising a PCB board and a steel mesh used in conjunction therewith, characterized in that: It also comprises a first suction cup (1) for adsorbing on a workbench, the first suction cup (1) being rotatably connected to a fixing mechanism (2) for further strengthening the adsorption force of the first suction cup (1), the fixing mechanism (2) being rotatably connected to a rotating assembly (3) for driving a chassis assembly (4) to rotate, the chassis assembly (4) being arranged directly above the rotating assembly (3) and being fixedly connected thereto, the chassis assembly (4) being rotatably connected to a compressible pressure rod assembly (7), the pressure rod assembly (7) being provided with a second suction cup (5) for adsorbing a PCB board; The chassis component (4) is also slidably connected to a plurality of clamping components (6) for clamping and positioning the PCB board and the steel mesh; The chassis assembly (4) comprises a rotating disk (41), the rotating disk (41) is provided with a plurality of arc-shaped guide grooves (42), and a sliding block (43) is slidably connected in the guide groove (42); The clamping assembly (6) comprises a sliding rod (61) rotatably connected to the slider (43), and a clamping plate (62) for clamping and positioning is provided on one end of the sliding rod (61) extending to the outside through the turntable (41), and the sliding rod (61) is slidably connected to the turntable (41). The sliding rod (61) is also provided with a support rod (63) for limiting the rotation of the sliding rod (61), which is fixedly connected to the first suction cup (1).

2. A microporous precision printing PCB steel mesh according to claim 1, characterized in that: The fixing mechanism (2) comprises a first rotating cylinder (21) rotatably connected to the first suction cup (1), a sliding cavity (23) and a threaded cavity (24) are provided in the first rotating cylinder (21), and an air suction component (22) for absorbing the remaining air in the first suction cup (1) is provided in the sliding cavity (23).

3. A microporous precision printing PCB steel mesh according to claim 2, characterized in that: The suction assembly (22) comprises a connecting rod (221) and a suction box (224) fixedly connected to one side of the first suction cup (1); an air hole (9) communicating with the suction box (224) is provided on one side of the first suction cup (1); one end of the connecting rod (221) is fixedly connected to a piston plate (222) for extracting the remaining air in the first suction cup (1); the other end of the connecting rod (221) is fixedly connected to a threaded disk (223) threadedly connected to the threaded cavity (24); when the first rotating cylinder (21) rotates, the connecting rod (221) is used to drive the threaded disk (223) to move upward.

4. The microporous precision printing PCB steel mesh according to claim 3, characterized in that: The suction box (224) and the piston plate (222) are matched and both are rectangular, and are designed to limit the rotation of the piston plate (222).

5. The microporous precision printing PCB steel mesh according to claim 2, characterized in that: The rotating assembly (3) comprises a second rotating drum (31), and a plurality of limiting grooves (32) are provided at the bottom end of the second rotating drum (31) and are used in conjunction with the limiting assembly (8) to limit the rotation of the rotating disk (41).

6. The microporous precision printing PCB steel mesh according to claim 5, characterized in that: The limit assembly (8) comprises a limit box (81), wherein the limit box (81) is fixedly connected to one side of the first rotating drum (21), a first limit rod (82) is movably connected inside the limit box (81), a second spring (85) is fixedly connected to the bottom end of the first limit rod (82), a limit block (86) matched with the limit groove (32) is fixedly connected to the top end of the first limit rod (82), a second limit rod (83) is fixedly connected to the first limit rod (82), and a slide groove (84) matched with the second limit rod (83) is provided on the limit box (81).

7. The microporous precision printing PCB steel mesh according to claim 6, characterized in that: The slide groove (84) is in a T-shaped structure or an L-shaped structure, wherein a vertical section is used for the second limiting rod (83) to slide up and down, and a horizontal section is used for engaging the second limiting rod (83) to limit its upward and downward sliding.

8. The microporous precision printing PCB steel mesh according to claim 1, characterized in that: The pressure rod assembly (7) comprises a pressure cylinder (71) whose material is soft and compressible, and a first spring (72) is fixedly arranged in the pressure cylinder (71).

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