PCB board reflow soldering storage device

Abstract

The utility model discloses a prevent scratch's PCB board reflow soldering storage device, include: carrier body, be provided with the placement groove for positioning PCB board on it, first side top piece, its setting in the side wall of one side of placement groove length direction, second side top piece, its setting in the side wall of one side of placement groove width direction, wherein, a plurality of first side top piece equidistance arrangement along the length direction of placement groove, the side wall of placement groove is provided with first positioning groove, first side top piece sliding connection is in first positioning groove, and the opposite side wall of first positioning groove is provided with side recess, and first elastic element is set up on first side top piece, and first elastic element is in "" character, and the two support feet of first elastic element cross each other, and the end of support foot is in the inner wall of side recess, and first side top piece end is in the side of PCB board. Compared with prior art, the utility model solves the problem that the steel sheet cover plate in the existing reflow soldering carrier is not good at positioning effect to PCB.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB reflow soldering, in particular to a PCB board reflow soldering storage device for preventing scratches. Background Art

[0002] SMT patching refers to a series of process flows carried out on the basis of a PCB. It is a circuit assembly technology that installs pinless or short-lead surface-mounted components on the surface of a printed circuit board (PCB) or the surface of other substrates and is welded and assembled by methods such as reflow soldering or dip soldering.

[0003] The existing PCB nickel sheet reflow soldering carrier consists of two parts: a cover plate and a carrier body. The cover plate specifically uses small steel sheets. The small steel sheets are fixedly installed on the carrier body through bolts. One end of the small steel sheet extends above the PCB in the positioning groove of the carrier body, and the PCB is fixed in the positioning groove of the carrier body.

[0004] During the use of the reflow soldering carrier, the small steel sheets are frequently damaged, deformed, or detached. The damage and deformation of the small steel sheets cause damage to the PCB or the steel mesh, while the detachment of the small steel sheets causes inaccurate positioning of the PCB, and it is easy to出现print offset during PCB printing, affecting the processing quality of the PCB. Content of the Utility Model

[0005] The purpose of the utility model is to provide a PCB board reflow soldering storage device for preventing scratches to solve the problem of poor positioning effect of the steel sheet cover plate on the PCB in the existing reflow soldering carrier.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: A PCB board reflow soldering storage device for preventing scratches, comprising:

[0007] A carrier body, on which a placement groove for positioning the PCB board is provided;

[0008] A first side top block, which is arranged on the side wall of one side in the length direction of the placement groove;

[0009] A second side top block, which is arranged on the side wall of one side in the width direction of the placement groove;

[0010] Among them, several first side top blocks are arranged at equal intervals along the length direction of the placement groove. A first positioning groove is provided on the side wall of the placement groove. The first side top block is slidably connected in the first positioning groove. Side grooves are provided on a pair of opposite side walls of the first positioning groove. A first elastic element is provided on the first side top block. The first elastic element is in a "fork" shape. The two legs of the first elastic element cross each other, and the ends of the legs abut against the inner wall of the side groove. The end of the first side top block abuts against the side of the PCB board.

[0011] As a further description of the above technical solution:

[0012] A groove is provided on the first side top block, and a side positioning groove is provided on one side wall of the groove. The first elastic element is placed on the groove, and one side of the first elastic element is inserted into the side positioning groove.

[0013] As a further description of the above technical solution:

[0014] The first side top block has a guide arc surface at its end, and a protruding block is provided on the guide arc surface. A protruding stop edge with a shape matching the guide arc surface is provided at the opening of the placement groove end.

[0015] As a further description of the above technical solution:

[0016] The top block on the first side has a waist-shaped hole.

[0017] As a further description of the above technical solution:

[0018] The placement slot is provided with several circumferentially arranged clearance slots, the depth of which is greater than the depth of the placement slot.

[0019] As a further description of the above technical solution:

[0020] The vehicle body has several round holes.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0022] 1. In this utility model, unlike the existing SMT carriers where the steel sheet positions the PCB on the upper side, a first side top block and a second side top block are used to elastically squeeze and position the PCB from adjacent sides. This side push-pull spring method fixes the PCB, avoiding deformation of the steel sheet that could damage the PCB or stencil. Furthermore, the side push-fixing of the PCB makes the printing position more accurate, effectively reducing printing positioning inaccuracies and preventing printing offset.

[0023] 2. In this utility model, the end of the first side top block is provided with a guide arc surface, and a protruding block is provided on the guide arc surface. The opening at the end of the placement groove is provided with a protruding stop edge whose shape matches the guide arc surface. The protruding stop edge, in conjunction with the guide arc surface, limits the ejection length of the first side top block, ensuring that the PCB is fixed by side push while avoiding excessive compression of the PCB. Attached Figure Description

[0024] 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.

[0025] Figure 1 A schematic diagram of a PCB reflow soldering storage device to prevent scratches. Figure 1 .

[0026] Figure 2 A schematic diagram of a PCB reflow soldering storage device to prevent scratches. Figure 2 .

[0027] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0028] Figure 4 This is a schematic diagram of the structure of the first side top block in a PCB board reflow soldering storage device to prevent scratches.

[0029] Legend:

[0030] 1. Vehicle body; 11. Placement slot; 12. Side groove; 13. Clearance slot; 14. Circular hole; 2. First side top block; 21. Groove; 211. Side positioning groove; 22. Guide arc surface; 221. Protrusion block; 23. Waist-shaped hole; 3. Second side top block; 4. First elastic element; 41. Support leg; 9. PCB board. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] Example 1

[0033] Please see Figure 1-4 This utility model provides a technical solution: a PCB board reflow soldering storage device to prevent scratches, comprising:

[0034] The vehicle body 1 is provided with a placement slot 11 for positioning the PCB board 9;

[0035] The first side top block 2 is disposed on the side wall of the placement groove 11 along the length direction;

[0036] The second side top block 3 is arranged on the side wall on one side in the width direction of the placement groove 11;

[0037] Among them, several first side top blocks 2 are arranged at equal intervals along the length direction of the placement groove 11. A first positioning groove is arranged on the side wall of the placement groove 11. The first side top block 2 is slidably connected in the first positioning groove. Side grooves 12 are arranged on a pair of opposite side walls of the first positioning groove. A first elastic element 4 is arranged on the first side top block 2. The first elastic element 4 is in a "fork" shape. The two legs 41 of the first elastic element 4 cross each other. The end of the leg 41 abuts against the inner wall of the side groove 12. The end of the first side top block 2 abuts against the side of the PCB board 9.

[0038] The structure and installation principle of the second side top block 3 are the same as those of the first side top block 2, and a second elastic element is arranged on the first side top block 2.

[0039] A waist-shaped hole 23 is arranged on the first side top block 2 to facilitate pulling the first side top block 2 backward.

[0040] A number of avoidance grooves 13 arranged circumferentially are arranged on the placement groove 11. The depth of the avoidance groove 13 is greater than the depth of the placement groove 11 to facilitate taking and placing the PCB in the placement groove 11.

[0041] A number of round holes 14 are arranged on the carrier body 1. The weight of the carrier body 1 is reduced to facilitate handling.

[0042] Working principle: Different from the existing SMT carrier in which the steel sheet positions the PCB on the upper side, the first side top block 2 and the second side top block 3 are used to elastically squeeze and position the PCB from adjacent sides of the PCB board 9. The PCB board 9 is fixed in a side push spring type manner, avoiding deformation of the steel sheet and damage to the PCB or the steel mesh. And the side push to fix the PCB makes the printing position more accurate, effectively reducing inaccurate printing positioning and avoiding the occurrence of printing offset phenomenon.

[0043] Embodiment 2

[0044] On the basis of the above embodiment, this embodiment further makes the following technical solutions as improvements: A guiding arc surface 22 is arranged at the end of the first side top block 2. A protruding block 221 is arranged on the guiding arc surface 22. A protruding retaining edge matching the guiding arc surface 22 in shape is arranged at the opening of the end of the placement groove 11.

[0045] The protruding retaining edge cooperates with the guiding arc surface to limit the ejection length of the first side top block 2, ensuring that the PCB is fixed by side push while avoiding excessive extrusion of the PCB.

[0046] Embodiment 3

[0047] Based on the above embodiments, this embodiment further improves the following technical solution: a groove 21 is provided on the first side top block 2, a side positioning groove 211 is provided on one side wall of the groove 21, the first elastic element 4 is placed on the groove 21, and one side of the first elastic element 4 is inserted into the side positioning groove 211 to fully position the first elastic element 4 and prevent the first elastic element 4 from detaching from the first side top block 2.

[0048] 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 scratch-preventing PCB board reflow solder storage device, characterized in that, The utility model relates to a carrier body is provided with the placing groove for positioning PCB board on it, first side top block is provided on the side wall of one side of the placing groove length direction, second side top block is provided on the side wall of one side of the placing groove width direction, wherein, a plurality of first side top block equidistance arrangement along the placing groove length direction, the side wall of the placing groove is provided with first positioning groove, first side top block sliding connection is in first positioning groove, one opposite side wall of first positioning groove is provided with side recess, first side top block is provided with first elastic element, first elastic element is in "" again type, two branches of first elastic element cross each other, the end of branch is pressed in the inner wall of side recess, and the end of first side top block is pressed in the side of PCB board. The first side top block is provided with a groove body, a side wall of the groove body is provided with a side positioning groove, the first elastic element is placed on the groove body, and one side of the first elastic element is inserted into the side positioning groove. The end of the first side top block is provided with a guide arc surface, the guide arc surface is provided with a convex block, and the opening of the end of the placing groove is provided with a convex stop edge matched with the guide arc surface. The first side top block is provided with a waist-shaped hole. The placing groove is provided with a plurality of circumferentially arranged avoiding grooves, and the depth of the avoiding grooves is greater than the depth of the placing groove.

2. The scratch-proof PCB reflow solder storage device according to claim 1, wherein, The carrier body is provided with a plurality of round holes.

3. The scratch-proof PCB reflow solder storage device of claim 1, wherein, ​ 4. The scratch-proof PCB reflow solder storage device of claim 1, wherein, ​ 5. The scratch-proof PCB reflow solder storage device of claim 1, wherein, ​ 6. The scratch-proof PCB reflow solder storage device of claim 1, wherein, ​

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