Printing jig for protecting golden fingers of circuit board

Abstract

The utility model discloses a printing jig for protecting a circuit board golden finger, which comprises a printing machine steel mesh, an etching groove is arranged on the printing machine steel mesh, the printing machine steel mesh is connected with a circuit board body, the lower end of the circuit board body is connected with a golden finger body, and the golden finger body is clamped in the etching groove. A limiting mechanism used for limiting the circuit board body is connected to the outer side of the printing machine steel mesh, a connecting pipe is connected to the printing machine steel mesh, threads are formed in the connecting pipe, the limiting mechanism comprises a clamping frame, a sleeve is connected to the clamping frame, and the sleeve is rotationally connected to the outer side of the printing machine steel mesh through a hinge frame. According to the utility model, the etching groove structure is adopted, the steel mesh template used by the printing machine is modified, and the golden finger area on the bottom surface of the steel mesh is reversely etched, so that the golden finger is effectively prevented from being contacted with the steel mesh template in the printing process.

Description

Technical Field

[0001] The utility model relates to the technical field of printing fixtures, in particular to a printing fixture for protecting the gold fingers of a circuit board. Background Technique

[0002] The gold finger is the connection point between the circuit board and the slot. If there is dust, oil stain or oxidation, it will cause poor contact.

[0003] The gold fingers on the PCB board are not allowed to be adhered with solder paste, which will affect the function and cause defects. When SMT prints solder paste, the gold fingers will contact the printing stencil, resulting in the gold fingers being contaminated with tin. The conventional method is to stick high-temperature tape at the position of the gold fingers to avoid contact between the gold fingers and any substances. However, manually sticking high-temperature tape increases the production man-hours, and manual operation increases the uncertainty. After the tape is heated in the reflow oven, the sticky substance will separate from the tape, and there will be glue residue on the gold fingers when the tape is removed, affecting the connection and transmission on the gold fingers.

[0004] Based on this, a printing fixture for protecting the gold fingers of a circuit board is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a printing fixture for protecting the gold fingers of a circuit board in order to solve the above problems.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A printing fixture for protecting the gold fingers of a circuit board, including a printing machine stencil. An etching groove is opened on the printing machine stencil. A circuit board body is connected to the printing machine stencil. A gold finger body is connected to the lower end of the circuit board body. The gold finger body is clamped in the etching groove. A limiting mechanism for limiting the circuit board body is connected to the outside of the printing machine stencil.

[0008] Preferably, a connecting pipe is connected to the printing machine stencil, and a thread is opened in the connecting pipe.

[0009] Preferably, the limiting mechanism includes a clamping frame, a sleeve is connected to the clamping frame, and the sleeve is rotatably connected to the outside of the printing machine stencil through a hinge frame.

[0010] Preferably, a through hole is opened in the printing machine stencil, and a support column and a push rod are connected in the through hole.

[0011] Preferably, the upper end of the support column contacts the upper end of the clamping frame, and the lower end of the push rod contacts the lower end of the clamping frame.

[0012] Preferably, four connecting pipes are provided, and the four connecting pipes are symmetrically connected to the stencil of the printing machine.

[0013] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0014] 1. By adopting the etching groove structure, the stencil template used in the printing machine is modified, and the finger area on the bottom surface of the stencil is etched in the reverse direction, so as to effectively avoid the contact between the fingers and the stencil template during the printing process.

[0015] 2. By adopting the clamping frame structure, when the circuit board is clamped, the clamping frame can be used to limit the circuit board, ensuring the stability of the connection between the circuit board and the stencil of the printing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 shows a schematic structural diagram of the overall printing fixture provided according to an embodiment of the present utility model;

[0017] Figure 2 shows an exploded structural diagram of the finger connection provided according to an embodiment of the present utility model;

[0018] Figure 3 shows an exploded structural diagram of the clamping frame connection provided according to an embodiment of the present utility model.

[0019] LEGEND DESCRIPTION:

[0020] 1. Stencil of the printing machine; 2. Connecting pipe; 3. Circuit board body; 4. Clamping frame; 5. Finger body; 6. Etching groove; 7. Through hole; 8. Support column; 9. Push rod; 10. Sleeve; 11. Hinge frame. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1-3 , the present utility model provides a technical solution:

[0023] A printing fixture for protecting the gold fingers of a circuit board, comprising a printing press stencil 1. An etching groove 6 is formed on the printing press stencil 1, and the position of the etching groove 6 corresponds to the position of the gold finger body 5. A circuit board body 3 is connected to the printing press stencil 1. The lower end of the circuit board body 3 is connected to the gold finger body 5, and the gold finger body 5 is clamped in the etching groove 6. The etching depth of the etching groove 6 is 0.05 mm. A limiting mechanism for limiting the circuit board body 3 is connected to the outside of the printing press stencil 1.

[0024] Specifically, as Figure 1 shown, a connecting pipe 2 is connected to the printing press stencil 1. Threads are provided inside the connecting pipe 2, and the connecting pipe 2 can be fixed by bolts to ensure the firm connection of the overall structure of the fixture.

[0025] Specifically, as Figure 3 shown, the limiting mechanism includes a clamping frame 4. The clamping frame 4 is U-shaped. A sleeve 10 is connected to the clamping frame 4. The sleeve 10 is rotatably connected to the outside of the printing press stencil 1 through a hinge frame 11, and the sleeve 10 is rotatably connected to the hinge frame 11.

[0026] Specifically, as Figure 3 shown, a through hole 7 is formed in the printing press stencil 1. A support column 8 and a push rod 9 are connected inside the through hole 7. The formation of the through hole 7 corresponds to the support column 8 and the push rod 9, so that the support column 8 is supported by the through hole 7 and does not fall off.

[0027] Specifically, as Figure 3 shown, the upper end of the support column 8 contacts the upper end of the clamping frame 4, and the lower end of the push rod 9 contacts the lower end of the clamping frame 4. The circuit board body 3 is used to push the support column 8, the support column 8 is used to push the push rod 9, and the push rod 9 is used to push the clamping frame 4.

[0028] Specifically, as Figure 3 shown, there are four connecting pipes 2. The four connecting pipes 2 are symmetrically connected to the printing press stencil 1. By setting the connecting pipes 2, the firm connection of the overall structure of the fixture is ensured.

[0029] In summary, for the printing fixture for protecting the gold fingers of a circuit board provided in this embodiment, when a circuit board needs to be installed, the circuit board is clamped in the printing press stencil 1 to ensure that the gold finger body 5 is placed in the etching groove 6. The two ends of the circuit board body 3 are used to press the support column 8, so that the lower end of the push rod 9 can push one end of the clamping frame 4, causing the clamping frame 4 to deflect. The upper end of the clamping frame 4 is used to press the two ends of the circuit board body 3 to improve the stability of the circuit board installation;

[0030] This fixture can reduce manual operation, eliminate unnecessary processes, enable direct production, save time and effort, increase production capacity, eliminate the need for additional application of high-temperature tape, reduce material waste, lower costs, and at the same time avoid contact between the gold fingers and the stencil, reduce defects caused by solder paste adhering to the gold fingers, and improve product quality.

[0031] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A printing jig for protecting gold fingers of a circuit board, comprising a printing machine steel mesh (1), characterized in that: The printing machine steel mesh (1) is provided with an etching groove (6), the printing machine steel mesh (1) is connected to a circuit board body (3), the lower end of the circuit board body (3) is connected to a gold finger body (5), the gold finger body (5) is clamped in the etching groove (6), and the outer side of the printing machine steel mesh (1) is connected to a limiting mechanism for limiting the circuit board body (3).

2. A printing jig for protecting gold fingers of a circuit board according to claim 1, characterized in that: The printing machine steel mesh (1) is connected to a connecting pipe (2), and a thread is provided inside the connecting pipe (2).

3. A printing jig for protecting gold fingers of a circuit board according to claim 1, characterized in that: The limiting mechanism comprises a clamping frame (4), a sleeve (10) is connected to the clamping frame (4), and the sleeve (10) is rotatably connected to the outside of the printing press steel screen (1) through a hinge frame (11).

4. A printing jig for protecting gold fingers of a circuit board according to claim 3, characterized in that: A through hole (7) is provided in the printing machine steel mesh (1), and a support column (8) and a push rod (9) are connected in the through hole (7).

5. A printing jig for protecting gold fingers of a circuit board according to claim 4, characterized in that: The upper end of the support column (8) contacts the upper end of the clamping frame (4), and the lower end of the push rod (9) contacts the lower end of the clamping frame (4).

6. A printing jig for protecting gold fingers of a circuit board according to claim 2, characterized in that: Four connecting pipes (2) are provided, and the four connecting pipes (2) are symmetrically connected to the printing press steel mesh (1).

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