A shielded cap stamping structure

Abstract

The utility model discloses a shielding cover tin printing structure, it includes: screen plate body, it includes fixed frame and printing steel screen, printing steel screen sets up on fixed frame, the fixed frame bottom opposite two ends respectively is provided with the backing plate, and the backing plate is connected with fixed frame, clamping assembly, it includes adjusting screw rod and tight block, adjusting screw rod is connected on the backing plate, and tight block fixed connection is established on adjusting screw rod, positioning block, it sets up between two backing plates, and is provided with the positioning groove on positioning block. Compared with prior art, the utility model can solve the problem that manual printing PCB board and steel screen are easy to deviate, cause the poor printing quality, influence the follow -up shielding cover welding.

Description

Technical Field

[0001] This utility model relates to the field of PCB board manufacturing and processing technology, and in particular to a shielding cover tin-printed structure. Background Technology

[0002] Currently, ICs are mounted on PCBs via surface mount technology. To shield the ICs from radiation, a shielding cover is typically used. This cover is a hollow box with a cutout at the bottom. The IC is mounted on the PCB, and the edge of the lower surface of the shielding cover is soldered to the outer edge of the PCB on the IC. Before soldering, solder paste needs to be printed onto the PCB using a stencil.

[0003] Currently, printing methods on the market include manual printing and automatic machine printing. In small-batch production, manual printing is generally preferred. However, in existing manual printing methods, misalignment can easily occur between the PCB board and the stencil, causing the holes on the stencil to align with the solder points on the PCB board, resulting in poor printing quality and, in severe cases, affecting the subsequent soldering of the shielding cover. Utility Model Content

[0004] The present invention provides a shielding cover soldering structure to solve the problem that the manual printing PCB board and the stencil are prone to misalignment, resulting in poor printing quality and affecting the subsequent soldering of the shielding cover.

[0005] To achieve the above objectives, this utility model provides a shielding cover tin-printed structure, which includes:

[0006] The screen body includes a fixed frame and a printed steel mesh, wherein the printed steel mesh is disposed on the fixed frame;

[0007] The fixing frame has pads at opposite ends of its bottom, and the pads are connected to the fixing frame.

[0008] A clamping assembly includes an adjusting screw and a clamping block, the adjusting screw being threadedly connected to the pad, and the clamping block being fixedly connected to the adjusting screw;

[0009] A positioning block is disposed between the two pads, and the positioning block is provided with a positioning groove.

[0010] As a further description of the above technical solution:

[0011] The fixing frame is provided with multiple bolts, which pass through the fixing frame and are connected to the pad.

[0012] As a further description of the above technical solution:

[0013] The pad is provided with guide posts, and the fixing frame is provided with guide holes corresponding to the positions of the guide posts.

[0014] As a further description of the above technical solution:

[0015] A spring is provided on the guide post, and the spring is located between the pad and the fixed frame.

[0016] As a further description of the above technical solution:

[0017] The clamping block is provided with at least one layer of elastic padding.

[0018] As a further description of the above technical solution:

[0019] The elastic pad is bonded to the top block.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows: the positioning block facilitates the placement of the PCB board in the positioning groove, the positioning block is pushed between the two pads, the adjusting screw is adjusted to make the stencil fit against the PCB board, and the holes on the stencil are aligned with the solder points on the PCB board. The adjusting screw is then adjusted to make the two clamping blocks clamp the positioning block, thereby making the positioning block and the stencil form a whole and move together under force. This avoids the offset between the PCB board and the stencil during manual printing and improves the soldering quality. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of a shielding cover tin structure.

[0023] Figure 2 This is a schematic diagram of the connection structure between the fixing frame and the pad in a shielding cover tin-printed structure.

[0024] Legend:

[0025] 1. Fixed frame; 2. Printed stencil; 3. Pad; 4. Clamping assembly; 41. Adjusting screw; 42. Tightening block; 5. Positioning block; 6. Positioning groove; 7. Bolt; 8. Guide post; 9. Guide hole; 10. Spring. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of the embodiments of this utility model, it should be noted that the terms "upper" and "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "adjacent," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to direct adjacency or indirect adjacency through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Please see Figure 1-2 This utility model provides a shielding cover tin-printed structure, which includes:

[0032] The screen body includes a fixed frame 1 and a printed steel mesh 2, wherein the printed steel mesh 2 is disposed on the fixed frame 1;

[0033] Pad 3: Pad 3 is provided at opposite ends of the bottom of the fixing frame 1, and the pad 3 is connected to the fixing frame 1;

[0034] The clamping assembly 4 includes an adjusting screw 41 and a clamping block 42. The adjusting screw 41 is threadedly connected to the pad 3, and the clamping block 42 is fixedly connected to the adjusting screw 41.

[0035] A positioning block 5 is disposed between the two pads 3, and a positioning groove 6 is provided on the positioning block 5.

[0036] The fixing frame 1 is provided with multiple bolts 7, which pass through the fixing frame 1 and are connected to the pad 3. By rotating the bolts, the distance between the printed stencil and the pad can be adjusted, allowing the printed stencil to fit more tightly against the PCB board.

[0037] The pad 3 is provided with guide posts 8, and the fixing frame 1 is provided with guide holes 9 corresponding to the positions of the guide posts 8. This facilitates the vertical movement of the fixing frame and prevents it from deviating.

[0038] A spring 10 is provided on the guide post 8, and the spring 10 is located between the pad 3 and the fixing frame 1. The spring can serve as a buffer.

[0039] At least one elastic pad is provided on the clamping block 42. The elastic pad is bonded to the clamping block 42. It serves as a buffer.

[0040] Working principle: The positioning block facilitates the placement of the PCB board in the positioning slot. Pushing the positioning block between the two pads and adjusting the screw allows the stencil to adhere to the PCB board, aligning the holes on the stencil with the solder points on the PCB. Further adjusting the screw clamps the positioning block with two tightening blocks, thus forming a unified whole between the positioning block and the stencil, allowing them to move together under pressure. This prevents misalignment between the PCB board and the stencil during manual printing, improving soldering quality.

[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 shielding cover tin-printed structure, characterized in that, include: The screen body includes a fixed frame and a printed steel mesh, wherein the printed steel mesh is disposed on the fixed frame; The fixing frame has pads at opposite ends of its bottom, and the pads are connected to the fixing frame. A clamping assembly includes an adjusting screw and a clamping block, the adjusting screw being threadedly connected to the pad, and the clamping block being fixedly connected to the adjusting screw; A positioning block is disposed between the two pads, and the positioning block is provided with a positioning groove.

2. The shielding cover tin-printed structure according to claim 1, characterized in that, The fixing frame is provided with multiple bolts, which pass through the fixing frame and are connected to the pad.

3. The shielding cover tin-printed structure according to claim 1, characterized in that, The pad is provided with guide posts, and the fixing frame is provided with guide holes corresponding to the positions of the guide posts.

4. The shielding cover tin-printed structure according to claim 3, characterized in that, A spring is provided on the guide post, and the spring is located between the pad and the fixed frame.

5. The shielding cover tin-printed structure according to claim 1, characterized in that, The clamping block is provided with at least one layer of elastic padding.

6. The shielding cover tin-printed structure according to claim 5, characterized in that, The elastic pad is bonded to the top block.

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