Steel mesh convenient for mounting double-sided connector

Abstract

The utility model discloses a steel mesh convenient for mounting a double-sided connector in the field of steel meshes, which comprises a steel mesh body, a plurality of gaskets are arranged on the back of the steel mesh body, a through hole is arranged in the middle of each gasket, an accommodating cavity is formed between each through hole and the steel mesh body, and each accommodating cavity is respectively arranged corresponding to a screw column or a pin of a connector of a circuit board. According to the utility model, the problem that the part, protruding out of the circuit board, of the pin of the plug connector affects the brushing of solder paste on a steel plate on the other side of the circuit board after the plug connector is welded on one side of the circuit board of the existing double-side welding plug connector is solved; the gasket wraps the screw column of the circuit board and the part, protruding out of the circuit board, of the connector pin, so that after the connector is welded to one face of the circuit board, the part, protruding out of the circuit board, of the connector pin on the face does not affect tin paste brushing of a steel plate on the other face of the circuit board, mounting of the double-face connector is facilitated, the welding yield is increased, and the production cost is reduced. The production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of steel mesh technology, specifically to a steel mesh that facilitates double-sided connector mounting. Background Technology

[0002] In current SMT manufacturing processes, when connectors are mounted onto circuit boards, it is crucial to ensure the soldering strength and mechanical stability of the protruding parts of the connector leads. This is especially important for circuit boards with double-sided connectors, where the solder paste printing on both sides of the connector leads must be addressed simultaneously. After the connector is soldered on one side of the circuit board, the protruding parts of the connector leads on that side can affect the application of solder paste to the stencil on the other side, easily leading to uneven solder paste thickness, failing to meet process requirements, and consequently causing poor soldering and reducing product yield. Furthermore, printing deviations caused by protruding connector leads require additional manual intervention and adjustments, which not only increases production costs but also reduces production efficiency.

[0003] The above-mentioned defects urgently need to be addressed. Utility Model Content

[0004] To address the issue that in existing double-sided soldered connector circuit boards, the protruding pins of the connectors after soldering to one side of the circuit board can interfere with the application of solder paste to the stencil on the other side, this invention provides a stencil that facilitates the mounting of double-sided connectors.

[0005] The technical solution of this utility model is as follows:

[0006] A stencil for easy mounting of double-sided connectors includes a stencil body, a plurality of gaskets on the back of the stencil body, a through hole in the center of each gasket, and a receiving cavity formed between the through hole and the stencil body. Each receiving cavity is respectively configured to correspond to a screw post or connector pin of a circuit board.

[0007] According to the present utility model with the above-described solution, the gasket includes a first gasket and a second gasket, the first gasket being disposed corresponding to the screw pins of the circuit board, and the second gasket being disposed corresponding to the pins of the connector.

[0008] According to the present invention based on the above scheme, the diameter of the through hole of the first gasket is larger than the diameter of the through hole of the second gasket.

[0009] According to the above-described scheme of this utility model, both the first gasket and the second gasket are circular in shape.

[0010] According to the above-described scheme of this utility model, the outer diameter of the first gasket is larger than the outer diameter of the second gasket.

[0011] According to the above-described scheme of this utility model, the outer diameter of the first gasket is 11mm and the inner diameter of the first gasket is 6mm.

[0012] According to the above-described scheme of this utility model, the outer diameter of the second gasket is 5.5 mm, and the inner diameter of the second gasket is 2.4 mm.

[0013] According to the above-described scheme of this utility model, the thickness of the gasket is 0.2mm to 0.3mm.

[0014] According to the above-described scheme of this utility model, the distance between the edge of the gasket and the components on the circuit board is at least 5mm.

[0015] According to the above-described scheme of this utility model, the steel mesh body is bonded to the gasket.

[0016] The advantages of this utility model based on the above solution are as follows:

[0017] In the aforementioned stencil that facilitates double-sided connector mounting, a through-hole is provided in the center of the spacer, forming a receiving cavity between the through-hole and the stencil body. Each receiving cavity corresponds to a screw post or connector pin on the circuit board. The back of the stencil body is locally thickened, and the spacer covers the protruding parts of the screw posts and connector pins on the circuit board. Therefore, after the connector is soldered on one side of the circuit board, the protruding parts of the connector pins on that side will not affect the application of solder paste to the stencil on the other side of the circuit board. This facilitates double-sided connector mounting, improves the uniformity of solder paste printing thickness, increases the yield rate of soldering, reduces additional manual intervention and debugging, lowers production costs, and improves production efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the gasket structure;

[0021] Figure 3 This is a schematic diagram of the circuit board structure.

[0022] In the diagram, 1 is the steel mesh body; 2 is the gasket; 21 is the through hole; 22 is the first gasket; 23 is the second gasket; 3 is the receiving cavity; 4 is the circuit board; 41 is the screw post; and 5 is the connector pin. Detailed Implementation

[0023] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0024] like Figures 1 to 3 As shown, this utility model provides a stencil for easy double-sided connector mounting, including a stencil body 1. Multiple gaskets 2 are provided on the back of the stencil body 1. A through hole 21 is provided in the center of each gasket 2, forming a receiving cavity 3 between the through hole 21 and the stencil body 1. Each receiving cavity 3 corresponds to a screw post 41 or a connector pin 5 on a circuit board 4. By partially thickening the back of the stencil body 1, and with the gaskets 2 covering the protruding portions of the screw posts 41 and connector pins on the circuit board 4, after a connector is soldered on one side of the circuit board 4, the protruding portion of the connector pin 5 on that side will not affect the application of solder paste to the stencil on the other side of the circuit board 4. This facilitates double-sided connector mounting, improves the uniformity of solder paste printing thickness, increases the soldering yield, reduces additional manual intervention and debugging, lowers production costs, and improves production efficiency.

[0025] In this embodiment, the pad 2 provides space for the pins and enhances the stability of the stencil, reduces the problem of loose bonding caused by uneven local stress on the stencil, avoids the solder paste from shifting or having inconsistent thickness during the printing process, and improves the uniformity of solder paste printing.

[0026] In this embodiment, the receiving cavity 3 corresponds one-to-one with the screw posts 41 or connector pins of the circuit board 4, ensuring the positioning accuracy of the stencil body 1 when it is attached to the circuit board 4. During the solder paste printing process, the stencil body 1 will not shift due to uncertain pin positions, allowing the solder paste to be accurately printed onto the pads of the circuit board 4. This avoids soldering defects caused by incorrect solder paste printing positions, reduces the need for manual debugging and rework, improves the soldering yield, and thus increases production efficiency.

[0027] like Figure 2 , Figure 3As shown, in this embodiment, the gasket 2 includes a first gasket 222 and a second gasket 232. The first gasket 222 is corresponding to the screw post 41 of the circuit board 4, and the second gasket 232 is corresponding to the connector pin 5. Furthermore, the diameter of the through hole 21 of the first gasket 222 is larger than the diameter of the through hole 21 of the second gasket 232. The first gasket 222 corresponds to the screw post 41 of the circuit board 4. The screw post 41 is typically large, and the larger diameter through hole 21 of the first gasket 222 ensures that the screw post 41 can be smoothly inserted into the receiving cavity 3. When the stencil is used for double-sided connector mounting, this avoids the screw post 41 obstructing the fit between the stencil and the circuit board 4. The second gasket 232 is designed for the connector pins, and its through hole 21 has a smaller diameter, matching the size of the connector pins. This allows the portion of the connector pins protruding from the circuit board 4 to be accurately inserted into the receiving cavity 3, preventing solder bridging and damage to the stencil by the connector pins. When the stencil is fitted with the circuit board 4 that has been single-sided soldered, the connector pins will not interfere with the fit of the stencil, providing a stable working plane for solder paste printing and reducing printing defects caused by connector pin obstruction.

[0028] like Figure 2 As shown, in this embodiment, both the first pad 222 and the second pad 232 are annular in shape. Compared to other shapes, the annular structure experiences balanced forces in all directions, preventing stencil deformation due to excessive or insufficient local pressure and providing a stable working plane for solder paste printing. Of course, the shapes of the first pad 222 and the second pad 232 can also be designed in other shapes. In actual design, the shapes of the first pad 222 and the second pad 232 can be designed according to actual needs.

[0029] In this embodiment, the outer diameter of the first washer 222 is larger than that of the second washer 232, which can match the different space requirements of the screw post 41 and the connector pins. Furthermore, the outer diameters of the first washer 222 and the second washer 232 can be determined based on the distance between the edge of the screw post 41 and surrounding components. The distance between the edge of the washer 2 and the components on the circuit board 4 is at least 5mm to prevent the washer 2 from directly squeezing or colliding with surrounding components during the stencil bonding process, ensuring smooth bonding of the stencil under various complex circuit board 4 layouts. For example, if the distance between the edge of the screw post 41 and surrounding components is 10mm, and the outer diameter of the first washer 222 is 5mm, then the edge of the first washer 222 must maintain a distance of at least 5mm from the components.

[0030] Preferably, the outer diameter of the first gasket 222 is 11mm, the inner diameter of the first gasket 222 is 6mm, the outer diameter of the second gasket 232 is 5.5mm, and the inner diameter of the second gasket 232 is 2.4mm. Of course, in actual design, the outer diameter of the first gasket 222, the inner diameter of the first gasket 222, and the outer diameter and inner diameter of the second gasket 232 can be designed according to actual needs.

[0031] In this embodiment, the thickness of the gasket 2 is 0.2mm to 0.3mm. The thickness of the gasket 2 can be designed to be 0.2mm, 0.25mm, or 0.3mm. In actual design, the thickness of the gasket 2 can be designed according to actual needs.

[0032] In this embodiment, the stencil body 1 and the gasket 2 are bonded together. For example, the stencil body 1 and the gasket 2 are bonded together with 502 glue. When the stencil body 1 and the gasket 2 are bonded together with 502 glue, the 502 glue cures quickly, allowing the gasket 2 to be installed on the stencil body 1. This ensures that the receiving cavity 3 is aligned with the screw post 41 pin and the connector pin, avoiding problems such as solder paste printing misalignment and omissions caused by the displacement of the gasket 2, thereby improving the accuracy and consistency of printing. In addition, compared with traditional connection methods such as welding and riveting, using 502 glue to bond the stencil body 1 and the gasket 2 simplifies the operation process. The operator only needs to apply 502 glue evenly to the mating surfaces of the stencil body 1 and the gasket 2 to quickly complete the bonding.

[0033] It should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art, or the orientation or positional relationship that the product is usually placed in during use. It is only for the purpose of facilitating the description of this application and simplifying the description, and is not intended to 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, it should not be construed as a limitation of this application.

[0034] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

[0035] The present utility model patent has been described above with reference to the accompanying drawings. Obviously, the implementation of the present utility model patent is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present utility model patent, or the direct application of the inventive concept and technical solution of the present utility model patent to other occasions without modification, are all within the protection scope of the present utility model.

Claims

1. A steel mesh for easy double-sided connector mounting, characterized in that, The device includes a stencil body, and a plurality of gaskets are provided on the back of the stencil body. Each gasket has a through hole in the middle, and the through hole and the stencil body form a receiving cavity. Each receiving cavity is respectively provided with a screw post or connector pin of the circuit board.

2. The steel mesh for easy double-sided connector mounting according to claim 1, characterized in that, The gasket includes a first gasket and a second gasket. The first gasket is configured to correspond to the screw pins of the circuit board, and the second gasket is configured to correspond to the pins of the connector.

3. The steel mesh for easy double-sided connector mounting according to claim 2, characterized in that, The diameter of the through hole in the first gasket is larger than the diameter of the through hole in the second gasket.

4. The steel mesh for easy double-sided connector mounting according to claim 2, characterized in that, Both the first gasket and the second gasket are annular in shape.

5. The steel mesh for easy double-sided connector mounting according to claim 3, characterized in that, The outer diameter of the first gasket is larger than the outer diameter of the second gasket.

6. The steel mesh for easy double-sided connector mounting according to claim 5, characterized in that, The outer diameter of the first gasket is 11 mm, and the inner diameter of the first gasket is 6 mm.

7. The steel mesh for easy double-sided connector mounting according to claim 5, characterized in that, The outer diameter of the second gasket is 5.5 mm, and the inner diameter of the second gasket is 2.4 mm.

8. The steel mesh for easy double-sided connector mounting according to claim 1, characterized in that, The thickness of the gasket is 0.2mm to 0.3mm.

9. The steel mesh for easy double-sided connector mounting according to claim 1, characterized in that, The distance between the edge of the gasket and the components on the circuit board is at least 5 mm.

10. The steel mesh for easy double-sided connector mounting according to claim 1, characterized in that, The steel mesh body is bonded to the gasket.

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