Steel mesh jig for PCB printing

Abstract

The utility model discloses a steel mesh jig for PCB printing in the field of steel mesh jigs, which comprises a mounting plate, fixing frames are fixed in the middles of the two ends of the upper surface of the mounting plate, moving blocks are slidably mounted on the inner sides of the fixing frames in the vertical direction, and second hydraulic cylinders are mounted on the surfaces of the sides, away from each other, of the moving blocks. Moving plates are fixed to the sides, close to the moving blocks, of output rods of the second hydraulic cylinders, electric clamping jaws are installed at the two ends of the opposite faces of the moving plates, and a PCB printing steel mesh is jointly clamped and limited between the electric clamping jaws, in the using process, the height of the PCB printing steel mesh can be adjusted, the PCB printing steel mesh can be conveniently replaced, and the PCB printing steel mesh can be conveniently replaced. Therefore, the working efficiency of printing and processing different PCBs can be guaranteed, the PCB printing steel mesh can be used for printing and processing the PCBs on carriers with different thicknesses, and the application range of the PCB printing steel mesh in use can be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of stencil fixtures, specifically a stencil fixture for PCB printing. Background Technology

[0002] A PCB is a basic electronic component that connects various electronic components by printing conductive lines and etching circuit patterns on an insulating substrate. PCB printing is a key step in the printed circuit board manufacturing process, which mainly involves transferring the designed circuit pattern onto the PCB substrate.

[0003] A PCB stencil is a tool used to print solder paste or other conductive materials onto the surface of a PCB (printed circuit board). The PCB stencil mainly serves as a template, while a PCB stencil fixture is a tool device specifically designed for fixing and positioning the PCB stencil.

[0004] However, existing PCB printing stencil fixtures are not conducive to adjusting the height of the PCB printing stencil and cannot be easily replaced, which affects the work efficiency of printing on different PCB boards. When transporting PCB boards through carriers of different thicknesses, the inability to easily adjust the height of the PCB printing stencil hinders its ability to print on PCB boards on carriers of different thicknesses, thus affecting the applicability of the PCB printing stencil.

[0005] Therefore, we propose a stencil fixture for PCB printing. Utility Model Content

[0006] The purpose of this utility model is to provide a stencil fixture for PCB printing to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A stencil fixture for PCB printing includes a mounting plate. A fixed frame is fixed to the middle of both ends of the upper surface of the mounting plate. A movable block is slidably mounted on the inner side of each fixed frame in a vertical direction. A second hydraulic cylinder is mounted on the side of each movable block that is far from the other side. The output rods of the second hydraulic cylinders face the movable blocks and penetrate both sides of the middle of the movable blocks. A movable plate is fixed to the side of each movable block where the output rods of the second hydraulic cylinders are close to the movable blocks. Electric grippers are mounted at both ends of the opposite sides of the movable plates. The electric grippers together clamp and limit the PCB printing stencil.

[0009] As a further embodiment of this utility model: the PCB printing stencil is in a horizontal state, and a number of printing through holes are spaced apart on the PCB printing stencil, all of which penetrate the upper and lower surfaces of the corresponding positions on the PCB printing stencil.

[0010] By adopting the above technical solution, the setting of through holes on the PCB printing stencil facilitates the printing process of the PCB board.

[0011] As a further improvement of this utility model: all the moving plates are in a horizontal state, all the second hydraulic cylinders are in a horizontal state, and the middle of each moving block is provided with a matching retention hole corresponding to the output rod of the second hydraulic cylinder.

[0012] By adopting the above technical solution, the setting of the movable plate helps to support and limit the second hydraulic cylinder.

[0013] As a further improvement of this utility model: a first hydraulic cylinder is installed on the bottom inner surface of the fixed frame. The first hydraulic cylinders are all in a vertical position with the output rods of the first hydraulic cylinders pointing upwards.

[0014] By adopting the above technical solution, the fixed frame can be used to fix and limit the first hydraulic cylinder.

[0015] As a further improvement of this utility model: the upper end of the output rod of the first hydraulic cylinder is fixedly connected to the middle of the lower surface of the corresponding moving block, and the fixing frame is in a vertical state.

[0016] By adopting the above technical solution, the setting of the first hydraulic cylinder helps to drive the moving block to move in the vertical direction.

[0017] As a further improvement of this utility model: a locking block is fixed at the middle of both ends of the moving block, and a matching slot is opened at the middle of both ends of the frame of the fixing frame corresponding to the locking block.

[0018] By adopting the above technical solution, the setting of the slot on the fixed frame helps to limit the movement of the card block on the moving block.

[0019] As a further improvement of this utility model: the card slots all penetrate the inner and outer surfaces of the corresponding positions on the fixed frame, and the card blocks are all located in the corresponding card slots on the corresponding fixed frames and are slidably connected to each other in the vertical direction.

[0020] By adopting the above technical solution, the setting of the slot and the block helps to limit the movement between the fixed frame and the moving block.

[0021] As a further improvement of this utility model: the mounting plate is in a horizontal state, and bolts are threaded into the four corners of the mounting plate in a vertical direction. The bolts are all in a vertical state and penetrate the upper and lower surfaces of the mounting plate at the corresponding positions.

[0022] By adopting the above technical solution, the bolts facilitate the installation and positioning of the mounting plate, making it easier to use the mounting plate stably.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] In this invention, the height of the PCB printing stencil is easily adjustable during use, and the PCB printing stencil can be easily replaced to ensure the efficiency of printing on different PCB boards. When PCB boards are transported through carriers of different thicknesses, the height of the PCB printing stencil can be easily adjusted, which helps the PCB printing stencil to print on PCB boards on carriers of different thicknesses, thus ensuring the applicability of the PCB printing stencil during use.

[0025] 2. In this utility model, when the moving plate moves horizontally, it can drive the electric gripper to move horizontally, so that the distance between the electric grippers is adapted to the size of the PCB printing stencil. When the moving block moves vertically, it can drive the moving plate to move vertically through the second hydraulic cylinder. When the moving plate moves vertically, it can drive the PCB printing stencil to move vertically through the electric gripper, which helps to adjust the height of the PCB printing stencil. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the movable block structure of this utility model;

[0028] Figure 3 This is a schematic diagram of the card block structure of this utility model;

[0029] Figure 4 This is a schematic diagram of the fixed frame structure of this utility model.

[0030] In the diagram: 1. PCB printed stencil; 2. Mounting plate; 3. Bolt; 4. Fixing frame; 5. Slot; 6. Block; 7. First hydraulic cylinder; 8. Second hydraulic cylinder; 9. Moving block; 10. Moving plate; 11. Electric gripper; 12. Placement hole; 13. Printed through hole. Detailed Implementation

[0031] 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.

[0032] Please see Figures 1-4 In this embodiment of the utility model, a stencil fixture for PCB printing includes a mounting plate 2. A fixing frame 4 is fixed to the middle of both ends of the upper surface of the mounting plate 2. A moving block 9 is slidably mounted on the inner side of each fixing frame 4 in a vertical direction. A second hydraulic cylinder 8 is mounted on the side of the moving block 9 that is far away from it. The output rod of the second hydraulic cylinder 8 faces the moving block 9 and passes through both sides of the middle of the moving block 9. A moving plate 10 is fixed to the side of the moving block 9 where the output rod of the second hydraulic cylinder 8 is close to it. Electric grippers 11 are mounted on both ends of the opposite face of the moving plate 10. The electric grippers 11 together clamp and limit the PCB printing stencil 1. This facilitates the adjustment of the height of the PCB printing stencil 1 during use, allowing for easy replacement of the PCB printing stencil 1, thus ensuring efficient printing on different PCB boards. When transporting PCB boards through carriers of different thicknesses, the height of the PCB printing stencil 1 can be easily adjusted, facilitating printing on PCB boards on carriers of different thicknesses and ensuring the applicability of the PCB printing stencil 1.

[0033] The PCB stencil 1 is horizontal, and several printing through holes 13 are spaced apart on it. The printing through holes 13 penetrate the upper and lower surfaces of the PCB stencil 1 at corresponding positions. The printing through holes 13 on the PCB stencil 1 facilitate the printing process of the PCB board. The moving plates 10 are all horizontal, and the second hydraulic cylinders 8 are all horizontal. The middle of the moving blocks 9 is provided with matching retention holes 12 corresponding to the output rods of the second hydraulic cylinders 8. The moving plates 10 help to support and limit the second hydraulic cylinders 8.

[0034] The bottom inner surface of the fixed frame 4 is equipped with a first hydraulic cylinder 7. The first hydraulic cylinder 7 is in a vertical position with the output rod of the first hydraulic cylinder 7 pointing upward. The fixed frame 4 can fix and limit the first hydraulic cylinder 7. The upper end of the output rod of the first hydraulic cylinder 7 is fixedly connected to the middle of the lower surface of the corresponding moving block 9. The fixed frame 4 is in a vertical position, and the first hydraulic cylinder 7 helps to drive the moving block 9 to move in the vertical direction. The middle of the two ends of the moving block 9 is fixed with a locking block 6. The middle of the two ends of the fixed frame 4 is provided with a matching locking groove 5 corresponding to the locking block 6. The locking groove 5 on the fixed frame 4 helps to limit the locking block 6 on the moving block 9.

[0035] The slots 5 all penetrate the inner and outer surfaces of the corresponding positions on the fixed frame 4. The blocks 6 are all located in the corresponding slots 5 on the corresponding fixed frame 4 and are slidably connected to the slots 5 in the vertical direction. The slots 5 and blocks 6 help to limit the movement between the fixed frame 4 and the moving block 9. The mounting plate 2 is in a horizontal state. Bolts 3 are threaded into the four corners of the mounting plate 2 in the vertical direction. The bolts 3 are all in a vertical state and penetrate the upper and lower surfaces of the corresponding positions on the mounting plate 2. The bolts 3 help to install and limit the mounting plate 2, and facilitate the stable use of the mounting plate 2.

[0036] The working principle of this utility model is as follows: During use, the mounting plate 2 is aligned with the corresponding position on the external PCB printing device. Furthermore, the mounting plate 2 is installed between the mounting plate 2 and the corresponding position on the external PCB printing device using bolts 3. The bolts 3 can fix and limit the mounting plate 2, facilitating stable use of the mounting plate 2. The mounting plate 2 can support and limit the fixed frame 4 and the various components mounted on the fixed frame 4, facilitating stable use of the fixed frame 4 and the various components mounted on the fixed frame 4. The fixed frame 4 can support and limit the moving block 9 and the various components mounted on the moving block 9 through the first hydraulic cylinder 7, facilitating stable use of the moving block 9 and the various components mounted on the moving block 9.

[0037] When the spacing between the electric grippers 11 needs to be adjusted according to the size of the PCB stencil 1, the second hydraulic cylinder 8 on the moving block 9 is opened. The moving block 9 can fix and limit the second hydraulic cylinder 8, facilitating stable use of the second hydraulic cylinder 8. When the second hydraulic cylinder 8 is open, the output rod of the second hydraulic cylinder 8 will move horizontally along the reserved hole 12 on the moving block 9. When the output rod of the second hydraulic cylinder 8 moves horizontally, it can drive the moving plate 10 to move horizontally. When the moving plate 10 moves horizontally, it can drive the electric grippers 11 to move horizontally, so as to adjust the spacing between the electric grippers 11, making the spacing between the electric grippers 11 match the size of the PCB stencil 1. Then, the PCB stencil 1 to be used is placed between the electric grippers 11, and the electric grippers 11 are opened, so that the electric grippers 11 can clamp and limit the PCB stencil 1.

[0038] When the height of the PCB stencil 1 needs to be adjusted, the first hydraulic cylinder 7 on the fixed frame 4 is opened. The fixed frame 4 can fix and limit the first hydraulic cylinder 7, which helps to use the first hydraulic cylinder 7 stably. When the first hydraulic cylinder 7 is opened, the output rod of the first hydraulic cylinder 7 can drive the moving block 9 to move vertically. When the moving block 9 moves vertically, it can drive the locking block 6 to move vertically in the locking groove 5 on the fixed frame 4. The fixed frame 4 can limit the moving block 9 through the locking groove 5 and the locking block 6, which facilitates the stable movement of the moving block 9. When the moving block 9 moves vertically, it can drive the moving plate 10 to move vertically through the second hydraulic cylinder 8. When the moving plate 10 moves vertically, it can drive the PCB stencil 1 to move vertically through the electric gripper 11, which helps to adjust the height of the PCB stencil 1.

[0039] External equipment for conveying PCB boards can transport the PCB boards to the underside of the PCB printing stencil 1 via a conveyor. The height of the PCB printing stencil 1 can be further adjusted according to the thickness of the conveyor, so that the external PCB printing equipment can perform printing processing on the PCB boards through the PCB printing stencil 1.

[0040] During use, the height of the PCB printing stencil 1 can be adjusted, and it can be easily replaced to ensure the efficiency of printing on different PCB boards. When the PCB board is transported through a carrier of different thicknesses, the height of the PCB printing stencil 1 can be easily adjusted, which helps the PCB printing stencil 1 to print on PCB boards on carriers of different thicknesses, so as to ensure the applicability of the PCB printing stencil 1.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A steel mesh jig for PCB printing comprising a mounting plate (2), characterized in that: The middle part of both ends of the upper surface of the mounting plate (2) is fixed with a fixed frame (4), the inner side of the fixed frame (4) is slidably installed with a moving block (9) in the vertical direction, the side surface of the moving block (9) away from each other is installed with a second hydraulic cylinder (8), the output rod of the second hydraulic cylinder (8) is towards the moving block (9) and penetrates through the both side surfaces of the middle part of the moving block (9), the moving plate (10) is fixed on the side of the output rod of the second hydraulic cylinder (8) close to the moving block (9), the electric clamping jaw (11) is installed on both ends of the opposite surface of the moving plate (10), and the PCB printing steel mesh (1) is clamped and limited between the electric clamping jaws (11).

2. The steel screen jig for PCB printing according to claim 1, wherein: The PCB printing steel mesh (1) is in a horizontal state, a plurality of printing through holes (13) are arranged on the PCB printing steel mesh (1) in a spaced manner, and the printing through holes (13) penetrate the upper surface and the lower surface of the PCB printing steel mesh (1) at the corresponding positions.

3. The steel screen jig for PCB printing according to claim 2, characterized in that: The moving plate (10) is in a horizontal state, the second hydraulic cylinder (8) is in a horizontal state, and the middle part of the moving block (9) is provided with a matching retention hole (12) corresponding to the output rod of the second hydraulic cylinder (8).

4. The steel screen jig for PCB printing according to claim 3, wherein: The bottom inner surface of the fixed frame (4) is installed with a first hydraulic cylinder (7), the first hydraulic cylinder (7) is in a vertical state, and the output rod of the first hydraulic cylinder (7) is upward.

5. The steel screen jig for PCB printing according to claim 4, wherein: The upper end of the output rod of the first hydraulic cylinder (7) is fixedly connected with the middle part of the lower surface of the corresponding moving block (9), and the fixed frame (4) is in a vertical state.

6. The steel screen jig for PCB printing according to claim 5, wherein: The middle part of the both end surfaces of the moving block (9) is fixed with a clamping block (6), and the middle part of the both end frames of the fixed frame (4) is provided with a matching clamping groove (5) corresponding to the clamping block (6).

7. The steel screen jig for PCB printing according to claim 6, wherein: The clamping groove (5) penetrates the inner surface and the outer surface of the fixed frame (4) at the corresponding position, and the clamping block (6) is located in the corresponding clamping groove (5) of the fixed frame (4) and is slidably connected with the clamping groove (5) in the vertical direction.

8. The steel screen jig for PCB printing according to claim 7, characterized in that: The mounting plate (2) is in a horizontal state, and the mounting plate (2) is provided with a bolt (3) at the four corners in the vertical direction, the bolt (3) is in a vertical state and penetrates the upper surface and the lower surface of the mounting plate (2) at the corresponding position.

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