PCB spraying tool clamp

Abstract

The utility model discloses a PCB spraying work fixture, comprising a mainboard, the mainboard is provided with at least one PCB counterpoint groove, the groove wall of the PCB counterpoint groove is provided with at least one component shielding assembly and at least one PCB spacing fixture block, and the position of the component shielding assembly corresponds to the component area of the PCB; the auxiliary board is movably connected with the main board, the auxiliary board is provided with a plurality of receding hole groups, and the positions of the receding hole groups correspond to the spraying area of the PCB; and at least one limiting and fixing block is movably connected to the main plate, and the limiting and fixing blocks are matched with the auxiliary plate. The PCB alignment groove is formed in the main board, the component shielding assembly capable of shielding components on the PCB is arranged on the PCB alignment groove, and the main board is hinged to the auxiliary board, so that the auxiliary board can fix and press the PCB on the main board, a machine can conduct automatic spraying work on a spraying area of the fixed PCB, the component area is prevented from being stained with three-proofing paint, and the product quality is improved. And the performance of the component area can be protected from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB spraying, in particular to a PCB spraying fixture. Background Art

[0002] After components are attached to a PCB, conformal coating is applied to the non-component areas manually or by machine. Conformal coating forms a thin protective film on the circuit board. This film, typically only 30 to 210µm thick, enhances the electronic product's resistance to moisture, dirt, dust, and chemical contamination. It also prevents corrosion of solder joints and conductors from contact with air, shields and eliminates certain electromagnetic interference, and provides insulation.

[0003] At present, in order to achieve efficient spraying of conformal coating on a large number of PCBs, machines are used for automatic spraying. However, there is a probability of spraying errors during machine spraying, which may cause the component area to be contaminated with conformal coating, thereby damaging the performance of the component area and causing poor quality control of the product. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a PCB spraying fixture that facilitates the automatic spraying of the spraying area of a fixed PCB, preventing the component area from being contaminated by conformal coating, thereby protecting the performance of the component area and ensuring product quality control.

[0005] A PCB spraying fixture according to an embodiment of the present invention includes:

[0006] A mainboard, the mainboard being provided with at least one PCB alignment slot, the slot walls of the PCB alignment slot being provided with at least one component shielding assembly and at least one PCB limiting block, the position of the component shielding assembly corresponding to the component area of the PCB;

[0007] A secondary board, the secondary board being movably connected to the main board, the secondary board being provided with a plurality of air-avoidance hole groups, the positions of the air-avoidance hole groups corresponding to the spraying area of the PCB;

[0008] A limiting and fixing block, at least one of which is arranged on the main board, and adapted to the sub-board.

[0009] According to some embodiments of the present invention, the component shielding assembly includes a component shielding block and a component shielding slot body, the first end of the component shielding block is connected to the first side wall of the PCB alignment slot, the second end of the component shielding block is connected to the second side wall of the PCB alignment slot, and the component shielding slot body is arranged on the component shielding block.

[0010] According to some embodiments of the present invention, the size of the component area of the PCB is adapted to the size of the component shielding slot.

[0011] According to some embodiments of the present invention, the main board and the sub-board are connected in a hinged manner.

[0012] According to some embodiments of the present invention, the main board is further provided with reinforcing ribs, at least one upper hinge is provided on the reinforcing ribs, the sub-board is provided with a lower hinge, and the upper hinge and the lower hinge are hinged to each other.

[0013] According to some embodiments of the present invention, the air avoidance hole group includes regular air avoidance holes and irregular air avoidance holes, and the number of the air avoidance hole groups corresponds to the number of PCB alignment slots.

[0014] According to some embodiments of the present invention, the regular air-avoiding holes are rectangular.

[0015] According to some embodiments of the present invention, the PCB limiting block is arranged at a corner of the PCB alignment slot, and the thickness of the PCB plate is smaller than the height of the slot wall of the PCB alignment slot.

[0016] According to some embodiments of the present invention, the number of the PCB alignment slots is four, and the four PCB alignment slots are arranged on the mainboard at equal intervals.

[0017] According to some embodiments of the present invention, the limiting fixing block includes a rotating part and a clamping part, the rotating part is threadedly connected to the main board via a bolt, and the clamping part is arranged on the side wall of the rotating part.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The PCB spraying fixture provided by the utility model provides a PCB alignment groove on the main board, and a component shielding assembly capable of shielding components on the PCB is provided on the PCB alignment groove. The main board is hinged with the sub-board so that the sub-board can fix and press the PCB on the main board, which is conducive to the machine automatically spraying the spraying area of the fixed PCB, preventing the component area from being contaminated with three-proof paint, and protecting the performance of the component area from being damaged, so that the quality control of the product can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 This is one of the structural diagrams of the PCB spraying fixture provided by the utility model;

[0022] Figure 2 This is the second structural diagram of the PCB spraying fixture provided by the utility model;

[0023] Figure 3 for Figure 2 Exploded diagram;

[0024] Figure 4 This is a schematic diagram of the structure of the mainboard in the present invention (back);

[0025] Figure 5 It is a structural diagram of the limiting fixing block in the utility model.

[0026] The markings in the figure are as follows:

[0027] Main board 100, PCB alignment slot 110, component shielding assembly 120, component shielding block 121, component shielding slot body 122, PCB limit block 130, reinforcing rib 140, upper hinge 150, lower hinge 160, sub-board 200, air avoidance hole group 210, regular air avoidance holes 211, irregular air avoidance holes 212, limit fixing block 300, rotating part 310, clamping part 320, bolt 330. DETAILED DESCRIPTION

[0028] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0029] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0030] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] Specifically, please refer to Figure 1-4 PCB spraying fixtures specifically include:

[0033] The motherboard 100 is provided with at least one PCB alignment slot 110. The slot wall of the PCB alignment slot 110 is provided with at least one component shielding assembly 120 and at least one PCB limiting block 130. The position of the component shielding assembly 120 corresponds to the component area of the PCB.

[0034] A sub-board 200, which is movably connected to the main board 100, is provided with a plurality of air-avoidance hole groups 210, and the positions of the air-avoidance hole groups 210 correspond to the spraying area of the PCB;

[0035] The limiting and fixing block 300 , at least one limiting and fixing block 300 is provided on the main board 100 , and the limiting and fixing block 300 is adapted to the sub-board 200 .

[0036] The PCB spraying fixture provided by the present invention provides a PCB alignment groove 110 on the main board 100, and a component shielding assembly 120 capable of shielding components on the PCB is provided on the PCB alignment groove 110. The main board 100 is hinged with the sub-board 200, so that the sub-board 200 can fix and press the PCB onto the main board 100, which facilitates the machine to automatically spray the spraying area of the fixed PCB, prevents the component area from being contaminated by the three-proof paint, and helps protect the performance of the component area from being damaged, so that the quality control of the product can be guaranteed.

[0037] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0038] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein can be combined with each other.

[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. Example 1

[0040] Please refer to Figure 1-4 A PCB spraying fixture includes a mainboard 100, the mainboard 100 being provided with at least one PCB alignment groove 110, at least one component shielding assembly 120 and at least one PCB limiting block 130 being provided on the groove wall of the PCB alignment groove 110, the position of the component shielding assembly 120 corresponding to the component area of the PCB;

[0041] A sub-board 200, which is movably connected to the main board 100, is provided with a plurality of air-avoidance hole groups 210, and the positions of the air-avoidance hole groups 210 correspond to the spraying area of the PCB;

[0042] The limiting and fixing block 300 , at least one limiting and fixing block 300 is provided on the main board 100 , and the limiting and fixing block 300 is adapted to the sub-board 200 .

[0043] Through the above structural design, the sub-board 200 is hinged to the main board 100, allowing the sub-board 200 to flip over at one end of the main board 100 and be buckled onto the main board 100. The PCB alignment groove 110 is used to align the PCB. The component shielding assembly 120 is used to shield the component area on the PCB to prevent the three-conformal paint from being sprayed on the components. The PCB limit block 130 is used to prevent the PCB placed on the PCB alignment groove 110 from falling, which helps to limit the movement of the PCB. The limit fixing block 300 is used to clamp and limit the sub-board 200. The airtight hole group 210 facilitates the three-conformal paint spraying on the back of the PCB, so that the PCB does not need to be removed, flipped, and fixed separately, and double-sided spraying can be achieved. By providing a PCB alignment groove 110 on the main board 100, and providing a component shielding assembly 120 capable of shielding components on the PCB on the PCB alignment groove 110, the main board 100 is hinged with the sub-board 200, so that the sub-board 200 can fix and press the PCB on the main board 100, which is conducive to the machine automatically spraying the spraying area of the fixed PCB, preventing the component area from being contaminated by the three-proof paint, and protecting the performance of the component area from damage, so that the quality control of the product can be guaranteed.

[0044] Specifically, the component shielding assembly 120 includes a component shielding block 121 and a component shielding slot 122. The first end of the component shielding block 121 is connected to the first side wall of the PCB alignment slot 110, and the second end of the component shielding block 121 is connected to the second side wall of the PCB alignment slot 110. The component shielding slot 122 is set on the component shielding block 121.

[0045] Through the above-mentioned structural design, the component shielding block 121 and the component shielding slot 122 are designed according to the component positions of the PCB, so the shapes of the component shielding block 121 and the component shielding slot 122 can be any shapes, and the slot depth of the component shielding slot 122 is determined according to the height of the components; the components of the PCB can be embedded in the component shielding slot 122 and protected in this way.

[0046] Specifically, the size of the component area of the PCB is adapted to the size of the component shielding slot 122 .

[0047] Through the above structural design, the size of the component area of the PCB is adapted to the size of the component shielding slot 122 , and the components of the PCB can be embedded in the component shielding slot 122 and thus protected.

[0048] Specifically, the main board 100 and the sub-board 200 are connected in a hinged manner.

[0049] Through the above structural design, the main board 100 and the sub-board 200 are connected in a hinged manner, so that the sub-board 200 can be flipped and fastened to the main board 100, or can be flipped and separated. Example 2

[0050] The PCB spraying fixture provided in Example 1 is further optimized. Specifically, Figure 1-4 As shown, the main board 100 is further provided with a reinforcing rib 140 , on which at least one upper hinge 150 is provided, and the sub-board 200 is provided with a lower hinge 160 , and the upper hinge 150 and the lower hinge 160 are hinged to each other.

[0051] Through the above structural design, the reinforcing rib 140 is used to limit the sub-panel 200 and provide hinge conditions at the same time. The sum of the dimensions of the sub-panel 200 and the reinforcing rib 140 is equal to the dimension of the main board 100. The flipping function of the sub-panel 200 is realized by the hinge of the upper hinge 150 and the lower hinge 160. Example 3

[0052] The PCB spraying fixture provided in Example 1 or 2 is further optimized, such as Figure 1-4 As shown, the air-avoiding hole group 210 includes regular air-avoiding holes 211 and irregular air-avoiding holes 212 . The number of the air-avoiding hole groups 210 corresponds to the number of the PCB alignment slots 110 .

[0053] Through the above structural design, the regular air-avoiding holes 211 can be rectangular, circular, rhombus, elliptical or parallelogram, etc. In this embodiment, the regular air-avoiding holes 211 are rectangular, and the number of the air-avoiding hole groups 210 is four.

[0054] Specifically, the PCB limiting block 130 is disposed at a corner of the PCB alignment slot 110 , and the thickness of the PCB plate is smaller than the height of the slot wall of the PCB alignment slot 110 .

[0055] Through the above structural design, the PCB limiting fixing blocks 300 are set at three corners of the PCB alignment slot 110, namely the lower right, lower left and upper right, which is beneficial to prevent the PCB placed on the PCB alignment slot 110 from falling and is beneficial to limiting the movement of the PCB.

[0056] Specifically, there are four PCB alignment slots 110 , and the four PCB alignment slots 110 are arranged on the mainboard 100 at equal intervals.

[0057] Through the above structural design, the four PCB alignment slots 110 are conducive to performing operations on multiple PCBs at the same time, thereby improving work efficiency.

[0058] like Figure 5 As shown, specifically, the limiting fixing block 300 includes a rotating portion 310 and a clamping portion 320 . The rotating portion 310 is threadedly connected to the mainboard 100 via a bolt 330 , and the clamping portion 320 is provided on the side wall of the rotating portion 310 .

[0059] Through the above structural design, the limiting and fixing block 300 is used to clamp and limit the sub-plate 200 .

[0060] The use process of the PCB spraying fixture provided by the utility model is as follows:

[0061] Place multiple PCBs in the PCB alignment slots 110 of the main board 100 so that the component area of the PCB can be embedded in the component shielding assembly 120. Then flip the sub-board 200 over to limit the PCB position. Then, connect the fixture to the PCB and put it into the machine for spraying of triple-conformal paint.

[0062] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0063] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A PCB spraying fixture, characterized in that: include: A mainboard (100), the mainboard (100) being provided with at least one PCB alignment slot (110), at least one component shielding assembly (120) and at least one PCB limiting block (130) being provided on a slot wall of the PCB alignment slot (110), the position of the component shielding assembly (120) corresponding to a component area of the PCB; A sub-board (200), the sub-board (200) being movably connected to the main board (100), the sub-board (200) being provided with a plurality of air-avoidance hole groups (210), the positions of the air-avoidance hole groups (210) corresponding to the spraying area of the PCB; A limiting fixing block (300), wherein at least one of the limiting fixing blocks (300) is movably connected to the main board (100), and the limiting fixing block (300) is adapted to the sub-board (200).

2. The PCB spraying fixture according to claim 1, characterized in that: The component shielding assembly (120) comprises a component shielding block (121) and a component shielding slot body (122); a first end of the component shielding block (121) is connected to a first side wall of the PCB alignment slot (110); a second end of the component shielding block (121) is connected to a second side wall of the PCB alignment slot (110); and the component shielding slot body (122) is arranged on the component shielding block (121).

3. The PCB spraying fixture according to claim 2, characterized in that: The size of the component area of the PCB is compatible with the size of the component shielding slot (122).

4. The PCB spraying fixture according to claim 1, characterized in that: The main board (100) and the auxiliary board (200) are connected in a hinged manner.

5. The PCB spraying fixture according to any one of claims 1 to 4, characterized in that: The main plate (100) is further provided with a reinforcing rib (140), and at least one upper hinge (150) is provided on the reinforcing rib (140). The auxiliary plate (200) is provided with a lower hinge (160), and the upper hinge (150) and the lower hinge (160) are hinged to each other.

6. The PCB spraying fixture according to claim 1, characterized in that: The air avoidance hole group (210) comprises regular air avoidance holes (211) and irregular air avoidance holes (212), and the number of the air avoidance hole group (210) corresponds to the number of the PCB alignment slots (110).

7. The PCB spraying fixture according to claim 6, characterized in that: The regular avoidance hole (211) is rectangular.

8. The PCB spraying fixture according to claim 1, characterized in that: The PCB limiting block (130) is arranged at a corner of the PCB alignment slot (110), and the thickness of the PCB plate is smaller than the height of the slot wall of the PCB alignment slot (110).

9. The PCB spraying fixture according to claim 1, characterized in that: The number of the PCB alignment slots (110) is four, and the four PCB alignment slots (110) are arranged on the mainboard (100) at equal intervals.

10. The PCB spraying fixture according to claim 1, characterized in that: The limiting fixing block (300) comprises a rotating portion (310) and a clamping portion (320); the rotating portion (310) is threadedly connected to the main board (100) via a bolt (330); and the clamping portion (320) is arranged on a side wall of the rotating portion (310).

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