Shielding cover rapid high-precision assembly limiting jig

Abstract

The utility model discloses a shielding cover rapid high-precision assembling limiting jig which comprises a jig base, and the upper surface of the jig base is provided with a PCBA board placing groove used for placing a PCBA board. The assembly limiting frame is installed above the PCBA board placing groove, and a plurality of limiting grooves used for limiting the assembly positions of the corresponding shielding covers are formed in the assembly limiting frame; and the gland is arranged above the assembly limiting frame and is used for simultaneously pressing all the shielding covers limited in the assembly limiting frame on the corresponding shielding cover assembly positions of the PCBA board. According to the utility model, rapid and high-precision assembly of one or more shielding covers is realized, and the assembly efficiency and the assembly quality of the shielding covers are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of SMT / DIP pre-processing and assembly, and in particular to a fast and high-precision assembly limiting fixture for a shielding cover. Background Art

[0002] The shielding cover of the circuit board of electronic products is used to surround the interference source of components, circuits, assemblies, cables or the entire system to prevent the interference electromagnetic field from spreading outward; or to surround the receiving circuit, equipment or system to prevent them from being affected by the external electromagnetic field.

[0003] After welding some industrial-grade PCBA boards, a board needs to be equipped with shielding covers of various special sizes. At present, most of these shielding covers are assembled one by one manually. The manual assembly process is as follows: the shielding cover is placed directly above the corresponding assembly position of the PCBA board. The assembly position is surrounded by buckles for clamping the corresponding shielding cover. After careful alignment, the shielding cover is pressed manually to snap into the buckle of the corresponding assembly position. During the pressing process, if the shielding cover cannot be assembled vertically accurately, it will be slightly skewed, resulting in the inability to accurately assemble the shielding cover on the corresponding assembly position of the PCBA board. Therefore, this manual assembly method is very difficult to assemble, inefficient, and easy to be installed out of position. It requires frequent rework and repeated assembly, which increases a lot of manpower and material resources. In addition, it requires workers' endurance. If pressed for a long time, the workers' hands will be sore, which leads to an increase in the defective rate.

[0004] The above problems need to be improved. Utility Model Content

[0005] In order to overcome the problems in the prior art that shielding cover assembly methods are very difficult to assemble shielding covers of various special sizes, are very inefficient, and are easily misaligned during installation, the utility model provides a shielding cover fast and high-precision assembly limit fixture.

[0006] The technical solution of the utility model is as follows:

[0007] A fast and high-precision assembly limit fixture for a shielding cover, comprising:

[0008] A fixture base, wherein the upper surface of the fixture base is provided with a PCBA board placement groove for placing the PCBA board;

[0009] An assembly limit frame is installed above the PCBA board placement slot, and the assembly limit frame is provided with a plurality of limit slots for limiting the assembly position of the corresponding shielding cover;

[0010] A pressing cover is installed above the assembly limit frame and is used to press all shielding covers confined in the assembly limit frame onto the shielding cover assembly positions corresponding to the PCBA board at the same time.

[0011] As a preferred embodiment of the shielding cover fast and high-precision assembly limiting fixture of the utility model, the position and size of each limiting groove match the corresponding shielding cover assembly position on the PCBA board.

[0012] As a preferred embodiment of the shielding cover fast and high-precision assembly limiting jig of the utility model, the contour of the pressure cover is consistent with the contour of the assembly limiting frame, and the pressure cover is overlapped on top of the assembly limiting frame.

[0013] As a preferred embodiment of the shielding cover rapid and high-precision assembly limit jig of the utility model, a positioning column is provided on the upper surface of the jig base, a first positioning hole matching with the positioning column is provided on the assembly limit frame, and a second positioning hole matching with the positioning column is provided on the pressure cover.

[0014] As a preferred embodiment of the fast and high-precision assembly limiting fixture for the shielding cover of the utility model, a first component avoidance groove for avoiding components on the PCBA board is provided on the assembly limiting frame.

[0015] As a preferred embodiment of the fast and high-precision assembly limit fixture for the shielding cover of the utility model, a second component avoidance groove is provided on the pressure cover to avoid components on the PCBA board.

[0016] As a preferred embodiment of the fast and high-precision assembly limiting jig for the shielding cover of the utility model, the thickness of the assembly limiting frame is smaller than the thickness of the shielding cover.

[0017] As a preferred embodiment of the shielding cover fast and high-precision assembly limiting jig of the utility model, each edge of the limiting groove is provided with a buckle avoidance groove for avoiding the corresponding shielding cover buckle on the PCBA board.

[0018] As a preferred embodiment of the fast and high-precision assembly limiting jig for the shielding cover of the utility model, at least one side of the PCBA board placement groove is provided with a pick-and-place avoidance groove.

[0019] As a preferred embodiment of the fast and high-precision assembly limiting fixture for the shielding cover of the utility model, pick-up and placement avoidance grooves are arranged on opposite sides of the PCBA board placement groove.

[0020] As a preferred embodiment of the fast and high-precision assembly limit fixture for the shielding cover of the utility model, each corner of the PCBA board placement slot is provided with a first inner R angle.

[0021] As a preferred embodiment of the limiting jig for rapid and high-precision assembly of the shielding cover of the utility model, each corner of the limiting groove is provided with a second inner R angle.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] The utility model provides a fast and high-precision assembly limit jig for shielding covers. By arranging a jig base, an assembly limit frame and a pressure cover, fast and high-precision assembly of one or more shielding covers can be achieved. The limit assembly can also be performed according to shielding covers with different required angles. The utility model perfectly solves the difficult problems of limiting the shielding cover during assembly, limiting the shielding cover at any angle, and assembling and limiting shielding covers of different sizes and multiple sizes at the same time. The assembly efficiency of the shielding cover is greatly improved. At the same time, the shielding cover can be prevented from being skewed during the assembly process, so that the qualified rate of the fast assembly limit of the shielding cover can reach more than 99.99%. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a top view of the fixture base in the utility model;

[0026] Figure 2 It is a top view of the assembly limit frame in the utility model;

[0027] Figure 3 It is a top view of the pressure cover in the utility model.

[0028] In the figure,

[0029] 1. Fixture base; 101. PCBA board placement slot; 1011. Pick-up avoidance slot; 1012. First inner R angle; 102. Positioning column; 103. Fixing hole; 104. Pick-up notch; 2. Assembly limit frame; 201. Limit slot; 2011. Buckle avoidance slot; 2012. Second inner R angle; 202. First positioning hole; 203. First component avoidance slot; 3. Pressure cover; 301. Second positioning hole; 302. Second component avoidance slot. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model more clearly understood, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. At the same time, it is stated that the embodiments described below are only used to explain the utility model and are not used to limit the utility model.

[0031] It should be noted that the terms "install", "set", "connect", "fix" and the like should be understood in a broad sense, for example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected or electrically connected; they can be directly connected, or indirectly connected through an intermediate medium, or they can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. The indication of orientation or position relationship is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the application product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art, or the orientation or position relationship in which the application product is usually placed when in use. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The terms "first" and "second" are only used for the purpose of convenience of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

[0032] See also Figures 1 to 3The present embodiment provides a shielding cover fast and high-precision assembly limiting jig, comprising a jig base 1, an assembly limiting frame 2 and a pressing cover 3. The upper surface of the jig base 1 is provided with a PCBA board placement groove 101 for placing a PCBA board; the assembly limiting frame 2 is installed above the PCBA board placement groove 101, and the assembly limiting frame 2 is provided with a plurality of limiting grooves 201 for limiting the assembly position of the corresponding shielding cover; the pressing cover 3 is installed above the assembly limiting frame 2, and is used to simultaneously press all the shielding covers limited in the assembly limiting frame 2 onto the shielding cover assembly positions corresponding to the PCBA board. Among them, the number of upper limit grooves 201 on the assembly limit frame 2, the position, angle and size of each limit groove 201 all match the corresponding shielding cover assembly position on the PCBA board. For example, if a PCBA board only needs to be assembled with one shielding cover, it is only necessary to open a limit groove 201 with the same size and specific angle as the shielding cover at the corresponding position of the assembly limit frame 2; if a PCBA board needs to be assembled with six shielding covers of different angles and sizes, it is necessary to open six limit grooves 201 with the same size and specific angle as the corresponding shielding covers at the corresponding positions of the assembly limit frame 2.

[0033] When the above-mentioned shielding cover fast and high-precision assembly limit jig is used, the jig base 1 is first placed or fixed on a platform / desktop, and then the PCBA board is placed in the PCBA board placement slot 101 of the jig base 1, and then the assembly limit frame 2 is covered, and the shielding cover is placed in the corresponding limit slot 201 for precise positioning; after all the shielding covers are placed and positioned, the pressure cover 3 is covered, and then the pressure cover 3 is pressed as a whole (lever principle, effortless); during the pressing process, all the shielding covers in the assembly limit frame 2 are pressed by the pressure cover 3 on the corresponding shielding cover assembly positions of the PCBA board (each shielding cover assembly position is provided with shielding cover buckles for clamping the corresponding shielding cover around it); finally, the pressure cover 3 and the assembly limit frame 2 are opened in turn, and the PCBA board with the assembled shielding cover can be taken out.

[0034] The shielding cover fast and high-precision assembly limiting jig designed in this way can realize fast and high-precision assembly of one or more shielding covers, and can also perform limiting assembly according to shielding covers with different required angles, perfectly solving the difficult problems of limiting the shielding cover during assembly, limiting the shielding cover at any angle, and simultaneously assembling and limiting shielding covers of different sizes and multiple sizes, greatly improving the assembly efficiency of the shielding cover, and at the same time preventing the shielding cover from tilting during assembly, so that the shielding cover fast assembly limiting pass rate can reach more than 99.99%.

[0035] In addition, the shielding cover rapid and high-precision assembly limiting jig of the utility model is not only suitable for the rapid and accurate limiting assembly of the shielding cover, but can also be laterally expanded to other products that require accurate limiting of shielding cover structural parts, as well as the rapid assembly limiting of other structural devices with similar structures and little difference, showing wide applicability.

[0036] See also Figure 2 , Figure 3 In one embodiment, the contour of the pressure cover 3 is consistent with the contour of the assembly limit frame 2, and the pressure cover 3 is superimposed on the assembly limit frame 2. The consistency of the contours of the pressure cover 3 and the assembly limit frame 2 ensures that the pressure cover 3 can be accurately aligned with the assembly limit frame 2 and the shielding cover inside it during the assembly process. This alignment ensures that when pressure is applied, each shielding cover can be accurately pressed onto the corresponding shielding cover assembly position on the PCBA board, avoiding assembly errors. In addition, the consistent contour design makes it easier for workers to identify and place the pressure cover 3 during the assembly process, simplifying the assembly steps.

[0037] See also Figures 1 to 3 In one embodiment, a positioning column 102 is provided on the upper surface of the jig base 1, a first positioning hole 202 matching with the positioning column 102 is provided on the assembly limit frame 2, and a second positioning hole 301 matching with the positioning column 102 is provided on the pressure cover 3. Through the positioning column 102, the first positioning hole 202 and the second positioning hole 301 provided as above, the assembly limit frame 2 can be quickly and accurately positioned on the jig base 1, and the pressure cover 3 can be accurately positioned on the assembly limit frame 2. Preferably, three positioning columns 102, three first positioning holes 202 and three second positioning holes 301 are provided, and the three positioning columns 102 are respectively provided on three peripheries of the upper surface of the jig base 1.

[0038] See also Figure 2 In one embodiment, a first component avoidance groove 203 for avoiding components on the PCBA board is opened on the assembly limit frame 2 to avoid higher components on the PCBA board, so that the assembly limit frame 2 can fit the PCBA board tightly.

[0039] See also Figure 3 In one embodiment, a second component avoidance groove 302 for avoiding components on the PCBA board is opened on the pressure cover 3, so as to avoid higher components on the PCBA board during the pressing process, and prevent the higher components on the PCBA board from pressing against the pressure cover 3, resulting in the pressure cover 3 being unable to be pressed into place and damaging the components on the PCBA board.

[0040] In one embodiment, the thickness of the assembly limit frame 2 is less than the thickness of the shielding cover, so that when the shielding cover is placed in the corresponding limit groove 201 of the assembly limit frame 2, the upper surface of the shielding cover is higher than the upper surface of the assembly limit frame 2, so that the lower surface of the pressing cover 3 can smoothly press the shielding cover onto the corresponding shielding cover assembly position of the PCBA board.

[0041] See also Figure 2 In one embodiment, each edge of the limiting groove 201 is provided with a buckle avoidance groove 2011 for avoiding the corresponding shield cover buckle on the PCBA board. Since shield cover buckles for clamping the corresponding shield cover are provided around each shield cover assembly position on the PCBA board, if there is no buckle avoidance groove 2011, the assembly limiting frame 2 may be hindered by the shield cover buckle when placed on the PCBA board, and cannot be closely attached to the PCBA board, thereby affecting the assembly accuracy and stability.

[0042] See also Figure 1 In one embodiment, at least one side or two opposite sides of the PCBA board placement slot 101 are provided with a pick-and-place avoidance slot 1011, and the pick-and-place avoidance slot 1011 facilitates workers to take the PCBA board out of the PCBA board placement slot 101 of the fixture base 1.

[0043] See also Figure 1 In one embodiment, each corner of the PCBA board placement slot 101 is provided with a first inner R angle 1012, so that the PCBA board is easier to be placed in the PCBA board placement slot 101, and the edges and corners of the PCBA board are not easily scratched by the PCBA board placement slot 101.

[0044] See also Figure 2 In one embodiment, each corner of the limiting groove 201 is provided with a second inner R angle 2012 , so that the shielding cover is easier to put into the limiting groove 201 and the edges and corners of the shielding cover are not easily scratched by the limiting groove 201 .

[0045] See also Figure 1 In one embodiment, fixing holes 103 are provided at the four corners of the fixture base 1. The fixing holes 103 cooperate with screws or other fixing parts to lock the fixture base 1 on a plane or a table to facilitate the assembly of the shielding cover.

[0046] See also Figure 1 In one embodiment, a pick-and-place notch 104 is provided at the edge of the jig base 1 , and the pick-and-place notch 104 is located directly below the assembly limit frame 2 , so that workers can easily remove the assembly limit frame 2 and the pressure cover 1 from the jig base 1 .

[0047] In some specific embodiments, the material of the fixture base 1 is pure bakelite, with an overall length of 215mm, a width of 185mm, and a thickness of 33mm; the PCBA board placement slot 101 is designed according to the length, width, and thickness of the PCBA board, with a length of 167.6mm, a width of 137.3mm, and a recess of 1.60mm; the material of the assembly limit frame 2 is aluminum alloy, with an overall thickness of 3mm; the material of the pressure cover 3 is aluminum alloy, with an overall thickness of 10mm.

[0048] Assembly efficiency comparison test:

[0049] After a PCBA board is welded, 6 shielding covers need to be assembled. When the existing manual assembly method is used, it is necessary to carefully align before manually pressing it hard, otherwise it is easy to press it out of position. It takes 4 minutes to assemble 6 shielding covers according to this action, which is inefficient, easy to skew, and requires frequent rework. Girls cannot persist in assembling according to this action for long. When the shielding cover fast and high-precision assembly fixture provided by the utility model is used to assist in assembly, it only takes 90 seconds to place the PCBA board + place the assembly limit frame 2 + accurately position the shielding cover after installation + place the pressure cover 3 for pressing, which greatly improves the assembly efficiency, is labor-saving, has a high assembly qualification rate, and has better quality assurance.

[0050] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

[0051] The above is an exemplary description of the utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model patent is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the utility model patent, or the concept and technical solution of the utility model patent are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A fast and high-precision assembly limit fixture for a shielding cover, characterized in that: include: A fixture base, wherein the upper surface of the fixture base is provided with a PCBA board placement groove for placing the PCBA board; An assembly limit frame is installed above the PCBA board placement slot, and the assembly limit frame is provided with a plurality of limit slots for limiting the assembly position of the corresponding shielding cover; A pressing cover is installed above the assembly limit frame and is used to press all shielding covers confined in the assembly limit frame onto the shielding cover assembly positions corresponding to the PCBA board at the same time.

2. The fast and high-precision assembly limit fixture for the shielding cover according to claim 1 is characterized in that: The position and size of each of the limiting grooves match the corresponding shielding cover assembly position on the PCBA board.

3. The fast and high-precision assembly limit fixture for the shielding cover according to claim 1 is characterized in that: The contour of the pressure cover is consistent with the contour of the assembly limit frame, and the pressure cover is overlapped on the top of the assembly limit frame.

4. The fast and high-precision assembly limit fixture for the shielding cover according to claim 1 is characterized in that: A positioning column is arranged on the upper surface of the fixture base, a first positioning hole matched with the positioning column is opened on the assembly limit frame, and a second positioning hole matched with the positioning column is opened on the pressure cover.

5. The fast and high-precision assembly limit fixture for the shielding cover according to claim 1 is characterized in that: The assembly limit frame is provided with a first component avoidance groove for avoiding components on the PCBA board.

6. The fast and high-precision assembly limit fixture for the shielding cover according to claim 5 is characterized in that: The pressure cover is provided with a second component avoiding groove for avoiding components on the PCBA board.

7. The fast and high-precision assembly limit fixture for the shielding cover according to claim 1 is characterized in that: The thickness of the assembly limit frame is smaller than the thickness of the shielding cover.

8. The fast and high-precision assembly limit fixture for the shielding cover according to claim 1, characterized in that: Each edge of the limiting groove is provided with a buckle avoidance groove for avoiding the corresponding shielding cover buckle on the PCBA board.

9. The fast and high-precision assembly limit fixture for the shielding cover according to claim 1, characterized in that: The two opposite sides of the PCBA board placement groove are provided with pick-and-place avoidance grooves.

10. The fast and high-precision assembly limit fixture for the shielding cover according to claim 1, characterized in that: Each corner of the PCBA board placement slot is provided with a first inner R angle, and each corner of the limiting slot is provided with a second inner R angle.

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