Jig for eliminating deformation of PCBA (Printed Circuit Board Assembly) in tin furnace

Abstract

The utility model relates to the technical field of PCBA (Printed Circuit Board Assembly) tin furnaces, in particular to a jig for eliminating deformation of a PCBA when the PCBA passes through a tin furnace, which comprises two vertical plate bodies, the upper surfaces of the two vertical plate bodies are respectively connected with a sliding seat in a sliding manner, the corresponding sides of the two sliding seats are fixedly connected with two sliding rods, the surfaces of the sliding rods are connected with sliding blocks in a sliding manner, and the surfaces of the sliding blocks are fixedly connected with a fixed plate. According to the technical scheme, through mutual cooperation of the sliding seat, the sliding rod, the sliding block and the fixing plate, the position of the clamping piece can be moved and adjusted in the X-axis direction and the Y-axis direction, the clamping piece is aligned with a reserved round hole formed in a PCBA board, the clamping piece can be moved and adjusted in the X-axis direction and the Y-axis direction, and the clamping piece can be adjusted in the X-axis direction and the Y-axis direction. After the clamping piece is matched with the clamping part to penetrate through the round hole, the clamping piece is matched with the spring to lift the PCBA board upwards, so that the PCBA board does not droop and deform when passing through a tin furnace, the quality of the PCBA board is ensured, subsequent installation of the PCBA board is facilitated, and the overall practicability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to PCBA tin furnace technical field especially relates to the jig of eliminating PCBA deformation when passing tin furnace. BACKGROUND

[0002] PCBA is printed circuit board assembly, and PCBA is widely used in various electronic products, such as mobile phone, computer, TV, sound, digital camera, automobile electronics, medical equipment etc., along with the continuous development and innovation of electronic products, the application field of PCBA is also expanding.

[0003] Tin furnace is an important process in PCBA (printed circuit board assembly) production, it is that the circuit board of having completed patch and plug-in passes through tin furnace, makes the pad on circuit board and electronic component pin realize reliable electrical connection through molten tin paste, in the process of passing tin furnace, the tin liquid in tin furnace keeps at a certain temperature, generally between 200-260 DEG C, circuit board passes through tin furnace at uniform speed, tin liquid will quickly soak pad and pin, forms uniform solder joint, and the time and speed of passing tin furnace need accurate control, to ensure that tin paste is fully melted and not excessively oxidized.

[0004] In daily work, it is found that in the process of passing tin of existing PCBA, the jig in tin furnace generally only fixes the four edges of PCBA, due to the size of some PCBA is too large, in the process of placing, the larger PCBA has certain weight, in addition to the influence of high temperature existing in passing tin, PCBA appears to sag, leads to PCBA deformation, affects quality and thereby is inconvenient for subsequent PCBA installation, further leads to the problem that existing PCBA is prone to deformation when passing tin in tin furnace. Utility model content

[0005] The utility model discloses a jig for eliminating PCBA deformation when passing tin in tin furnace.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: the fixture that eliminates PCBA when passing the tin furnace and deforms, including two vertical plate bodies, the upper surface of two vertical plate bodies is slidably connected with slide seat respectively, and one side of two slide seats is fixedly connected with two slide bars respectively, the surface of slide bar is slidably connected with sliding block, the surface of sliding block is fixedly connected with fixed plate, the inner wall of fixed plate is slidably connected with screw rod, the surface of screw rod is threadedly connected with nut, the surface of screw rod is equipped with spring, and both ends of spring are fixedly connected with fixed plate and one end of screw rod respectively, the lower end of screw rod is fixedly connected with clamping piece, the surface of clamping piece is fixedly connected with two clamping portions, through above-mentioned parts, when using, the position of clamping piece can be adjusted through nut and screw rod, and the suitable round hole is set up in PCBA board, then clamping piece is inserted into the round hole, after clamping piece is extruded and drives clamping portion to pass through the round hole, clamping piece restores, and the other side of clamping portion is abutted with PCBA board, so that PCBA can be pulled up in cooperation with screw rod and spring, and the phenomenon that PCBA board deforms when passing tin is reduced.

[0007] Preferably, one side of the two vertical plate bodies is fixedly connected with a connecting plate, and the number of the connecting plates is two.

[0008] Preferably, the clamping piece is composed of a U-shaped portion and two symmetrical elastic portions below the U-shaped portion.

[0009] Preferably, the clamping portion is in a semicircular shape.

[0010] Preferably, the lower end of each elastic portion of the clamping piece is in an inclined surface shape, and the inclined surface can better contact the round hole set up on the PCBA board, so as to extrude the deformation of the clamping piece.

[0011] Compared with the prior art, the utility model has the advantages and positive effects that:

[0012] 1. In the utility model, the slide seat, the slide bar, the sliding block and the fixed plate are mutually matched to move and adjust the position of the clamping piece in the X and Y axes, align the reserved round hole on the PCBA board, and pull up the PCBA board upward in cooperation with the spring after the clamping piece and the clamping portion pass through the round hole, so that the PCBA board does not sag and deform when passing the tin furnace, the quality of the PCBA board is ensured, the subsequent PCBA board is conveniently installed, and the overall practicability is improved. ACCURACY OF DRAWINGS

[0013] Figure 1 The utility model proposes the fixture that eliminates PCBA when passing the tin furnace and deforms the three-dimensional structure schematic diagram;

[0014] Figure 2Part structure schematic diagram of the jig for eliminating deformation of PCBA when passing through a tin furnace is provided in the utility model.

[0015] Figure 3 Another part structure schematic diagram of the jig for eliminating deformation of PCBA when passing through a tin furnace is provided in the utility model.

[0016] Figure 4 Part structure schematic diagram of the jig for eliminating deformation of PCBA when passing through a tin furnace is provided in the utility model.

[0017] Legend:

[0018] 1, vertical plate body; 2, connecting plate; 3, sliding seat; 4, sliding block; 5, fixed plate; 6, screw rod; 7, nut; 8, clamping piece; 9, spring; 10, sliding rod; 11, clamping part; 12, inclined surface. Specific implementation

[0019] Please refer to Figures 1-4 The utility model provides a technical scheme: the jig for eliminating deformation of PCBA when passing through a tin furnace, including two vertical plate bodies 1, the upper surface of two vertical plate bodies 1 is slidably connected with sliding seat 3, one side of two sliding seats 3 is fixedly connected with two sliding rods 10, the surface of sliding rod 10 is slidably connected with sliding block 4, the surface of sliding block 4 is fixedly connected with fixed plate 5, the inner wall of fixed plate 5 is slidably connected with screw rod 6, the surface of screw rod 6 is threadedly connected with nut 7, the surface of screw rod 6 is equipped with spring 9, and the both ends of spring 9 are fixedly connected with fixed plate 5 and one end of screw rod 6 respectively, the lower end of screw rod 6 is fixedly connected with clamping piece 8, and the surface of clamping piece 8 is fixedly connected with two clamping parts 11.

[0020] In the embodiment: when using, the position of clamping piece 8 can be adjusted by nut 7 cooperation screw rod 6, suitable round hole is set up in PCBA board, then clamping piece 8 is inserted into round hole, after clamping piece 8 is driven to pass through round hole under extrusion, clamping piece 8 restores, and clamping part 11 is in abutment with the other side of PCBA board, so that PCBA can be pulled up by cooperation screw rod 6 and spring 9, and the phenomenon that PCBA board deforms when passing through tin is reduced.

[0021] Specifically, one side of the two vertical plate bodies 1 is fixedly connected with the connecting plate 2, and the number of the connecting plate 2 is two.

[0022] Specifically, the clamping piece 8 is composed of a U-shaped portion and two symmetrical elastic portions below the U-shaped portion.

[0023] Specifically, the clamping part 11 is in a semicircular shape.

[0024] Specifically, the lower end of the two elastic portions in the clamping piece 8 is in an inclined surface 12.

[0025] In this embodiment: the inclined surface 12 can better contact with the round hole on the PCBA board, thereby extruding the deformation of the clamping piece 8.

[0026] Working principle: in use, first find the position of the round hole on the PCBA board, and open the round hole at the position, slide the slide 3 and the slide rod 10 on the vertical plate body 1, and slide the slide block 4 on the slide rod 10, realize the movement adjustment of the clamping piece 8 on the X, Y axis, move the clamping piece 8 to the position where the round hole is opened on the PCBA board, adjust the position of the clamping piece 8 through the nut 7 and the screw rod 6, after adjustment, push the screw rod 6 and the clamping piece 8, the spring 9 is stressed, the clamping piece 8 can be inserted into the round hole on the surface of the PCBA board, the inclined surface 12 at the front end of the clamping piece 8 can be extruded with the round hole on the PCBA board, so that the elastic part in the clamping piece 8 is deformed, then the clamping piece 8 drives the clamping part 11 to pass through the round hole, after passing through the round hole, the elastic part in the clamping piece 8 resets, the clamping piece 8 drives the arc-shaped clamping part 11 to abut against the other side of the PCBA board, after abutting, loosen the pressed screw rod 6, the spring 9 releases the elastic force, the elastic force pushes the screw rod 6 and the clamping piece 8 upward, the clamping piece 8 cooperates with the clamping part 11 to pull the PCBA board upward, thereby ensuring that the PCBA board will not deform during the tin process, and ensuring the quality of the PCBA board.

Claims

1. A jig for eliminating deformation of a PCBA when passing through a tin furnace, comprising two vertical plates (1), characterized in that: The upper surfaces of the two vertical plates (1) are respectively slidably connected to a slide seat (3), and the corresponding sides of the two slide seats (3) are fixedly connected to two slide rods (10), the surface of the slide rod (10) is slidably connected to a slider (4), the surface of the slider (4) is fixedly connected to a fixed plate (5), the inner wall of the fixed plate (5) is slidably connected to a screw rod (6), the surface of the screw rod (6) is threadedly connected to a nut (7), the surface of the screw rod (6) is sleeved with a spring (9), the two ends of the spring (9) are respectively fixedly connected to the fixed plate (5) and one end of the screw rod (6), the lower end of the screw rod (6) is fixedly connected to a clamping piece (8), and the surface of the clamping piece (8) is fixedly connected to two clamping parts (11).

2. The jig for eliminating deformation of a PCBA during soldering according to claim 1, characterized in that: One side of the two vertical plate bodies (1) is fixedly connected with a connecting plate (2), and there are two connecting plates (2).

3. The jig for eliminating deformation of PCBA during soldering according to claim 1, characterized in that: The clamping member (8) is formed by combining a U-shaped portion and two symmetrically arranged elastic portions below the U-shaped portion.

4. The jig for eliminating deformation of a PCBA during soldering according to claim 1, characterized in that: The clamping portion (11) is arranged in a semicircular shape.

5. The jig for eliminating deformation of PCBA during soldering according to claim 1, characterized in that: The lower ends of the two elastic parts in the clamp (8) are arranged in the form of inclined surfaces (12).

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