Multi-spring furnace passing jig

Abstract

The utility model relates to the technical field of PCBA (Printed Circuit Board Assembly), in particular to a multi-spring furnace-passing jig, which comprises a substrate, a groove for placing a PCBA is arranged on the substrate, a support plate is arranged on the substrate, a positioning groove is arranged on the support plate, a pressing strip matched with a spring is arranged in the positioning groove, and the PCBA is arranged in the pressing strip. The pressing strip is provided with a pressing rod connected with the spring in an inserted mode, the base plate is provided with a positioning structure matched with the PCBA board, the supporting plate is provided with a limiting structure matched with the pressing strip, and the pressing strip is matched with the pressing rod, so that the spring can be limited left and right and prevented from tilting in the wave soldering process; the PCBA board is fixed through the positioning structure to prevent looseness, the pressing bar and the pressing rod are fixed through the limiting structure, the pressing bar and the pressing bar are prevented from being jacked up by the spring, and it is guaranteed that the spring is effectively fixed through the pressing bar and the pressing rod.

Description

Technical Field

[0001] This utility model relates to the field of PCBA technology, and in particular to a multi-spring reflow fixture. Background Technology

[0002] PCB stands for Printed Circuit Board, also known as Printed Circuit Board. It is an important electronic component, serving as the support for electronic components and the carrier for the electrical interconnection of electronic components. Because it is made using electronic printing technology, it is called a "printed" circuit board. PCBA, on the other hand, is the entire process of a bare PCB board through SMT (Surface Mount Technology) or DIP (Dual In-line Package) assembly.

[0003] Existing PCBAs require fixtures to fix them during reflow to prevent bending and deformation. For example, Chinese Patent Publication No. CN211831376U discloses "a PCBA reflow fixture", which uses the elastic restoring force of a spring to drive two clamping plates to move relative to each other. The elastic restoring force of the spring reduces the impact force of the two clamping plates on the PCBA board, preventing the PCBA from bending and deforming during the extrusion process, thereby completing the clamping operation. This PCBA reflow fixture has the advantages of wide applicability and stable clamping of PCBA boards, making them less prone to deformation.

[0004] However, in actual use, some PCBA boards require the installation of springs. If the springs are not fixed, they are prone to tilting or leaning during the soldering process. Some PCBA boards are processed by inserting the springs into sleeves and using the sleeves to straighten the springs. However, when the springs are irregular in size, the fixing sleeves cannot be removed after the springs are soldered. Utility Model Content

[0005] The purpose of this invention is to solve the shortcomings of existing technologies, such as the tendency for springs to tilt or lean during the tinning process when they are not fixed, and the difficulty in removing the fixing sleeve when using a sleeve to straighten the springs. Therefore, this invention proposes a multi-spring reflow fixture.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A multi-spring reflow oven fixture is designed, comprising a base plate, a groove for placing a PCBA board on the base plate, a support plate on the base plate, a positioning groove on the support plate, a pressure bar that cooperates with a spring in the positioning groove, a plurality of pressure rods that are inserted into the spring on the pressure bar, a positioning structure that cooperates with the PCBA board on the base plate, and a limiting structure that cooperates with the pressure bar on the support plate.

[0008] Furthermore, a limiting plate is fixedly provided on the support plate, and the limiting plate corresponds to the positioning groove and the pressure strip.

[0009] Furthermore, the positioning structure includes a first bolt, on which a positioning bracket is movably inserted.

[0010] Furthermore, a first elastic element is fitted onto the first bolt, and the two ends of the first elastic element abut against the first bolt and the positioning frame, respectively.

[0011] Furthermore, the limiting structure includes a second bolt, on which a pressure block is movably inserted.

[0012] Furthermore, a second elastic element is fitted onto the second bolt, and the two ends of the second elastic element abut against the second bolt and the pressure block, respectively.

[0013] Furthermore, the pressure rod includes a cylindrical portion and a tapered portion, the tapered portion being inserted into the spring.

[0014] The multi-spring furnace fixture proposed in this utility model has the following advantages:

[0015] In this invention, the spring can be limited to the left and right by the cooperation of the pressure bar and the pressure rod, so as to prevent the spring from tilting or leaning during the wave soldering process.

[0016] Secondly, in this utility model, the PCBA board is fixed to prevent loosening by a positioning structure, and the pressure bar and pressure rod are fixed by a limiting structure to prevent the spring from lifting the pressure bar and pressure bar, thus ensuring that the pressure bar and pressure rod effectively fix the spring. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a multi-spring furnace fixture proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the groove structure of this utility model;

[0019] Figure 3 This is an enlarged structural diagram of region A of this utility model;

[0020] Figure 4 This is a schematic diagram of the positioning frame of this utility model.

[0021] In the diagram: 1. Substrate; 2. PCBA board; 3. Groove; 4. Support plate; 41. Limiting plate; 5. Spring; 6. Pressure bar; 7. Pressure rod; 71. Columnar part; 72. Conical part; 8. Positioning structure; 81. First bolt; 82. Positioning frame; 83. First elastic element; 9. Limiting structure; 91. Second bolt; 92. Pressure block; 93. Second elastic element. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-4 A multi-spring reflow oven fixture includes a base plate 1, a groove 3 for placing a PCBA board 2 on the base plate 1, a support plate 4 on the base plate 1, a positioning groove on the support plate 4, a pressure strip 6 that cooperates with a spring 5 in the positioning groove, a plurality of pressure rods 7 that are inserted into the spring 5 on the pressure strip 6, a positioning structure 8 that cooperates with the PCBA board 2 on the base plate 1, and a limiting structure 9 that cooperates with the pressure strip 6 on the support plate 4.

[0024] In this utility model, the pressure strip 6 and the pressure rod 7 work together to limit the left and right movement of the spring 5, preventing the spring 5 from tilting or leaning during wave soldering. At the same time, the positioning structure 8 fixes the PCBA board 2 to prevent loosening, and the limiting structure 9 fixes the pressure strip 6 and the pressure rod 7 to prevent the spring 5 from pushing up the pressure rod 7 and the pressure strip 6, thus ensuring that the pressure strip 6 and the pressure rod 7 effectively fix the spring 5.

[0025] Furthermore, in this embodiment, a limiting plate 41 is fixedly provided on the support plate 4. The limiting plate 41 corresponds to the positioning groove and the pressure strip 6. The position of the pressure strip 6 is restricted by the limiting plate 41 to prevent the pressure strip 6 from moving left and right, which would cause the spring 5 to move left and right.

[0026] Furthermore, in this embodiment, the positioning structure 8 includes a first bolt 81, on which a positioning frame 82 is movably inserted. The positioning frame 82 can move up and down and left and right along the rod of the first bolt 81. The head of the first bolt 81 restricts the positioning frame 82 to prevent it from falling off. The positioning frame 82 comes into contact with the PCBA board 2 under the action of gravity.

[0027] It should be noted that in this embodiment, a first elastic element 83 is sleeved on the first bolt 81. The two ends of the first elastic element 83 abut against the first bolt 81 and the positioning frame 82 respectively. The first elastic element 83 applies force to the positioning frame 82, so that the positioning frame 82 is in close contact with the PCBA board 2 to prevent the PCBA board 2 from moving and causing the spring 5 to tilt.

[0028] Furthermore, in this embodiment, the limiting structure 9 includes a second bolt 91, on which a pressure block 92 is movably inserted. The pressure block 92 corresponds to the positioning groove on the support plate 4. Rotating the pressure block 92 can block and position the pressure strip 6, thereby fixing it and preventing it from moving upward.

[0029] In detail, in this embodiment, a second elastic element 93 is sleeved on the second bolt 91. The two ends of the second elastic element 93 abut against the second bolt 91 and the pressure block 92 respectively. The second elastic element 93 applies force to the pressure block 92 to limit and fix the pressure strip 6.

[0030] More specifically, in this embodiment, the pressure rod 7 includes a cylindrical portion 71 and a tapered portion 72. The tapered portion 72 is inserted into the spring 5 to fix the spring 5 and prevent it from tilting.

[0031] Working method: During operation, the first elastic element 83 applies force to the positioning frame 82, so that the positioning frame 82 is in close contact with the PCBA board 2 to prevent the PCBA board 2 from moving. The pressure rod 7 is inserted into the spring 5 and cooperates with the pressure strip 6 to limit the left and right movement of the spring 5, preventing the spring 5 from tilting or leaning during wave soldering. The second elastic element 93 applies force to the pressure block 92, so that it limits and fixes the pressure strip 6 to prevent it from moving upward. The position of the pressure strip 6 is also limited by the limiting plate 41 to prevent the pressure strip 6 from moving left and right, thereby fixing the pressure strip 6 in the positioning groove to prevent loosening.

[0032] 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 multi-spring furnace passing jig comprising a base plate (1), characterized in that, The substrate (1) has a groove (3) for placing the PCBA board (2), a support plate (4) is provided on the substrate (1), a positioning groove is provided on the support plate (4), a pressure strip (6) that cooperates with the spring (5) is provided in the positioning groove, a plurality of pressure rods (7) that are inserted into the spring (5) are provided on the pressure strip (6), a positioning structure (8) that cooperates with the PCBA board (2) is provided on the substrate (1), and a limiting structure (9) that cooperates with the pressure strip (6) is provided on the support plate (4).

2. The multi-spring reflow fixture according to claim 1, characterized in that: A limiting plate (41) is fixedly provided on the support plate (4), and the limiting plate (41) corresponds to the positioning groove and the pressure strip (6).

3. The multi-spring reflow fixture according to claim 1, characterized in that: The positioning structure (8) includes a first bolt (81), on which a positioning bracket (82) is movably inserted.

4. A multi-spring reflow fixture according to claim 3, characterized in that: The first bolt (81) is fitted with a first elastic element (83), and the two ends of the first elastic element (83) abut against the first bolt (81) and the positioning frame (82) respectively.

5. A multi-spring reflow fixture according to claim 1, characterized in that: The limiting structure (9) includes a second bolt (91), on which a pressure block (92) is movably inserted.

6. The multi-spring oven curing jig of claim 5, wherein: The second bolt (91) is fitted with a second elastic element (93), and the two ends of the second elastic element (93) abut against the second bolt (91) and the pressure block (92) respectively.

7. A multi-spring reflow fixture according to claim 1, characterized in that: The pressure rod (7) includes a cylindrical part (71) and a tapered part (72), the tapered part (72) being inserted into the spring (5).

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