Anti-welding wire printing nail bed

Abstract

The utility model relates to the technical field of printed circuit board production, in particular to an anti-welding wire printing nail bed. The anti-welding wire printing nail bed comprises a mounting plate and bearing pieces, the mounting plate is provided with at least one bearing area, the bearing area is right opposite to a substrate, not provided with components, on a PCB, penetrating holes are fully distributed in the bearing area at intervals, the bearing pieces and the mounting plate are stacked from bottom to top, the output ends of the bearing pieces penetrate through one end, away from the PCB, of the mounting plate and extend out of the penetrating holes, and the output ends of the bearing pieces are connected with the PCB. According to the PCB, the through holes are formed in the PCB, each through hole corresponds to one bearing piece, the output ends of the bearing pieces abut against the substrate, not provided with the components, of the PCB, the effect that the bearing pieces bear the PCB from the area of the substrate, not provided with the components, of the PCB is achieved, bearing of the PCB can be achieved, and protection of the components on the PCB can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of printed circuit board production, in particular to a solder mask screen printing nail bed. Background Art

[0002] Solder mask is a relatively complex and crucial process in the PCB (Printed Circuit Board) manufacturing process. It uses the screen printing method to cover the circuits and pads that do not need to be exposed with photosensitive oil, playing the roles of beautifying the appearance, insulation, and anti-oxidation.

[0003] To ensure the service life of the PCB, screen printing processing needs to be carried out on both the front and back sides of the PCB. After the ink printing on one side of the PCB is completed, the PCB needs to be turned over and set on the nail bed for the ink printing on the other side. In the prior art, the nail bed consists of a flat plate and ejector pins. Specifically, it is necessary for workers to use double-sided tape to bond and fix the ejector pins on the flat plate in sequence, and the PCB is supported by the ejector pins. The operation of manually bonding and fixing the ejector pins by workers not only has a large labor intensity, but also has inconsistent bonding specifications, and it is easy to have the problem of the ejector pins damaging the PCB. In addition, when the ejector pins support the PCB, the manually bonded ejector pins are prone to directly abut against the components on the PCB, and it is even easier to damage the PCB.

[0004] Therefore, it is urgent to invent a solder mask screen printing nail bed to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a solder mask screen printing nail bed to realize stable support for the PCB while improving the protection of the PCB.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The solder mask screen printing nail bed includes:

[0008] A mounting plate, the mounting plate has at least one supporting area, the supporting area is directly opposite to the substrate on the PCB where no components are provided, and the supporting area is provided with through holes arranged at intervals; and

[0009] A supporting member, the supporting member and the mounting plate are stacked from bottom to top, the output end of the supporting member passes through and extends out of the through hole from one end of the mounting plate away from the PCB, each through hole is correspondingly arranged with one supporting member, and the output end of the supporting member abuts against the substrate on the PCB where no components are provided.

[0010] As an optional solution, the supporting member includes:

[0011] A base; and

[0012] A supporting column, connected to the base, can pass through and extend out of the through hole from one end of the mounting plate away from the PCB, and one end of the supporting column away from the base abuts against the substrate of the PCB where no components are arranged.

[0013] As an alternative, the supporting column includes:

[0014] A supporting column body, one end of the supporting column body is connected to the base; and

[0015] A guiding part, connected to the other end of the supporting column body, and the diameter of the guiding part gradually decreases during the process of extending from one end close to the supporting column body to the direction away from the supporting column body.

[0016] As an alternative, the anti-solder printing nail bed further includes:

[0017] A positioning part, a positioning hole is arranged on the mounting plate, a docking hole is arranged on the PCB, and the positioning part is detachably fixed to the positioning hole and the docking hole in sequence.

[0018] As an alternative, the mounting plate is rectangular, positioning holes are arranged at the corners of the mounting plate, and each positioning hole is correspondingly arranged with a positioning part and a docking hole.

[0019] As an alternative, the positioning hole and / or the docking hole is a waist-shaped hole.

[0020] As an alternative, the mounting plate and the supporting part are made of insulating materials.

[0021] As an alternative, an elastic buffer layer covers the end face of the mounting plate close to the supporting part;

[0022] and / or, an elastic buffer layer covers the end face of the supporting part close to the mounting plate.

[0023] As an alternative, the maximum distance between two adjacent supporting parts does not exceed 50 mm.

[0024] As an alternative, the distance H that the output end of the supporting part extends out of the through hole is 2 mm to 4 mm.

[0025] The beneficial effects of the present utility model:

[0026] The anti-welding wire printing nail bed provided by the utility model realizes supporting the PCB from the area of the substrate on the PCB where no components are provided by arranging at least one supporting area on the mounting plate, making the supporting area face the substrate on the PCB where no components are provided, arranging through holes at intervals in the supporting area, stacking the supporting members and the mounting plate from bottom to top in sequence, ensuring that each through hole is correspondingly arranged with a supporting member, and enabling the output end of the supporting member to pass through and extend out of the through hole from the end of the mounting plate far away from the PCB. It can not only realize the support of the PCB, but also improve the protection of the components on the PCB. In addition, the supporting member and the mounting plate are fixedly connected by insertion, which can reduce the docking difficulty between the supporting member and the mounting plate, and there is no need to set an additional adhesive for bonding and fixing, avoiding the pollution problem caused by the adhesive remaining on the supporting member and the mounting plate. Description of the Drawings

[0027] Figure 1 is a schematic structural diagram of the anti-welding wire printing nail bed provided by an embodiment of the utility model;

[0028] Figure 2 is a schematic structural diagram of the mounting plate provided by an embodiment of the utility model;

[0029] Figure 3 is a schematic structural diagram of the supporting member provided by an embodiment of the utility model.

[0030] In the figure:

[0031] 100, mounting plate; 110, supporting area; 111, through hole; 120, positioning hole;

[0032] 200, supporting member; 210, supporting column; 211, supporting column main body; 212, guiding part; 220, base. Detailed Embodiments

[0033] In order to make the technical problems solved by the utility model, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the utility model will be further described below with reference to the drawings and through specific embodiments.

[0034] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected", "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0035] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "under the bottom of" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0036] In the description of this embodiment, the orientation or positional relationships such as "up", "down", "left" and "right" are based on the orientation or positional relationships shown in the drawings. They are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0037] To ensure the service life of the PCB, silk screen processing needs to be carried out on both the front and back sides of the PCB. After the ink printing on one side of the PCB is completed, the PCB needs to be turned over and set on the nail bed for the ink printing on the other side. In the prior art, the nail bed consists of a flat plate and thumbtacks. Specifically, it is necessary for the staff to use double-sided tape to bond and fix the thumbtacks on the flat plate in sequence, and the PCB is supported by the thumbtacks. The operation of manually bonding and fixing the thumbtacks by the staff not only has a large labor intensity, but also has inconsistent bonding specifications, and it is easy to have the problem that the thumbtacks damage the PCB. In addition, when the thumbtacks support the PCB, the manually bonded thumbtacks are prone to be directly abutted against the components on the PCB, which is more likely to damage the PCB.

[0038] To solve the above problems, as Figures 1 to 3 shown, this embodiment provides a solder-proof silk screen nail bed. The solder-proof silk screen nail bed includes a mounting plate 100 and a supporting member 200. Among them, the mounting plate 100 has at least one supporting area 110, the supporting area 110 faces the substrate on the PCB where no components are provided, the supporting area 110 is provided with perforations 111 arranged at intervals, the supporting member 200 and the mounting plate 100 are stacked from bottom to top, the output end of the supporting member 200 passes through and extends out of the perforation 111 from the end of the mounting plate 100 away from the PCB, each perforation 111 is correspondingly arranged with a supporting member 200, and the output end of the supporting member 200 abuts against the substrate on the PCB where no components are provided.

[0039] The anti-solder paste printing nail bed sets at least one supporting area 110 on the mounting plate 100, aligns the supporting area 110 with the substrate on the PCB where no components are arranged, and is densely covered with through holes 111 at intervals in the supporting area 110. The supporting member 200 and the mounting plate 100 are stacked in sequence from bottom to top, ensuring that each through hole 111 corresponds to a supporting member 200. The output end of the supporting member 200 passes through and extends out of the through hole 111 from the end of the mounting plate 100 far away from the PCB. By using the output end of the supporting member 200 and the substrate on the PCB where no components are arranged, the supporting member 200 supports the PCB from the area of the substrate on the PCB where no components are arranged, which can not only support the PCB but also improve the protection of the components on the PCB. In addition, the supporting member 200 and the mounting plate 100 are fixed by plugging, which can reduce the docking difficulty between the supporting member 200 and the mounting plate 100, and there is no need to set additional adhesive for bonding and fixing, avoiding the pollution problem caused by the adhesive remaining on the supporting member 200 and the mounting plate 100.

[0040] It should be noted that in this embodiment, there are 5 supporting areas 110 on the mounting plate 100. Each supporting area 110 is densely covered with through holes 111. In other embodiments, the supporting area 110 of the mounting plate 100 can also be adjusted according to the specific specifications of the PCB, and no specific limitation is made in this embodiment.

[0041] In this embodiment, the mounting plate 100 and the supporting member 200 are made of insulating materials. By using insulating materials to prepare the mounting plate 100 and the supporting member 200, the insulating support for the PCB can be realized, further improving the protection of the PCB. It should be noted that in this embodiment, both the mounting plate 100 and the supporting member 200 are made of PP (Polypropylene). The PP material not only has good strength but also good insulation performance. In addition, in the prior art, the bottom plate of the nail bed is made of a semi-processed board, and the mounting plate 100 made of PP material can effectively reduce the production cost of the anti-solder paste printing nail bed.

[0042] As an optional solution, the anti-solder paste printing nail bed further includes a positioning member. Among them, positioning holes 120 are provided on the mounting plate 100, and docking holes are provided on the PCB. The positioning member is detachably fixed to the positioning holes 120 and the docking holes in sequence. By respectively providing positioning holes 120 on the mounting plate 100 and docking holes on the PCB, and using the positioning member to be detachably fixed to the positioning holes 120 and the docking holes in sequence, the positioning of the mounting plate 100 and the PCB can be realized, and further the positioning of the supporting member 200 and the PCB can be realized, improving the supporting effect of the supporting member 200 on the PCB.

[0043] It should be noted that, in this embodiment, the positioning member is a bolt, internal threads are provided on both the positioning hole 120 and the docking hole, and the bolt is threadedly fixed to the positioning hole 120 and the docking hole in sequence. In other embodiments, the positioning member can also be a fixed pin, and the fixed pin is inserted and fixed to the positioning hole 120 and the docking hole in sequence. This embodiment does not make specific limitations.

[0044] During the processing of the PCB, there may be errors in the specific size specifications of the PCB. To facilitate the positioning of the PCB and the mounting plate 100 according to the specific size of the PCB, the positioning hole 120 and the docking hole are waist-shaped holes. It should be noted that, in other embodiments, only the positioning hole 120 can be set as a waist-shaped hole, or only the docking hole can be set as a waist-shaped hole. This embodiment does not make specific limitations.

[0045] In addition, in this embodiment, the mounting plate 100 is rectangular, and positioning holes 120 are provided at the corners of the mounting plate 100. Each positioning hole 120 is correspondingly arranged with a positioning member and a docking hole. By providing positioning holes 120 at the four corners of the rectangular mounting plate 100, each positioning hole 120 is correspondingly arranged with a docking hole and a positioning member. In other embodiments, the specific shape of the mounting plate 100 can also be adjusted according to actual needs, and the specific number of positioning holes 120 on the mounting plate 100 can be adjusted according to actual needs, as long as each positioning hole 120 is correspondingly arranged with a docking hole and a positioning member. This embodiment does not make specific limitations.

[0046] Combined with Figure 3 The specific structure of the supporting member 200 will be described. The supporting member 200 includes a base 220 and a supporting column 210. Among them, the supporting column 210 is connected to the base 220, and the supporting column 210 can pass through and extend out of the through hole 111 from the end of the mounting plate 100 away from the PCB, and the end of the supporting column 210 away from the base 220 abuts against the substrate of the PCB where no components are provided. By setting the supporting member 200 as the interconnected base 220 and supporting column 210, the structural stability of the supporting member 200 can be improved. Specifically, when it is necessary to assemble the supporting member 200 and the mounting plate 100 together, first place the supporting member 200 on the ground with the supporting column 210 located above the base 220, then align the through hole 111 on the mounting plate 100 with the supporting column 210 in the up and down direction, place the mounting plate 100 above the base 220, and at the same time, the supporting column 210 passes through the through hole 111.

[0047] It should be noted that in this embodiment, the inner diameter of the through hole 111 is 1.7 mm. The diameter of the supporting column 210 is 1.6 mm to ensure that the supporting column 210 can pass through the through hole 111 smoothly. In other embodiments, the inner diameter of the through hole 111 and the diameter of the supporting column 210 can also be adjusted according to actual needs, as long as the clearance fit between the through hole 111 and the supporting column 210 is ensured, and this embodiment does not make specific limitations. Moreover, in this embodiment, the base 220 is circular, and the diameter of the base 220 is 8 mm to enable the supporting member 200 to have good stability.

[0048] As an alternative, an elastic buffer layer is covered on the end face of the mounting plate 100 close to the base 220, and an elastic buffer layer is covered on the end face of the base 220 close to the mounting plate 100. By respectively arranging an elastic buffer layer on the end face of the mounting plate 100 close to the supporting member 200 and an elastic buffer layer on the end face of the base 220 close to the mounting plate 100, buffering can be provided for the direct abutment between the base 220 and the mounting plate 100, and the protection of the base 220 and the mounting plate 100 can be improved. It should be noted that in this embodiment, the elastic buffer layer is a rubber layer. Rubber has good elasticity, toughness and wear resistance, and a long service life. In other embodiments, the elastic buffer layer can also be a sponge layer, a cotton layer or other elastic layers, and this embodiment does not make specific limitations. In addition, in other embodiments, an elastic buffer layer can also be arranged only on the end face of the mounting plate 100 close to the supporting member 200, or only on the end face of the base 220 close to the mounting plate 100, and this embodiment does not make specific limitations.

[0049] To ensure the supporting effect of the supporting column 210 on the PCB, the maximum distance between two adjacent supporting columns 210 does not exceed 50 mm. By ensuring that the maximum distance between two adjacent supporting members 200 does not exceed 50 mm, it can be ensured that there are enough supporting members 200 in the supporting area 110 on the mounting plate 100 to support the PCB. It should be noted that in this embodiment, the distance between two adjacent supporting columns 210 is 4 mm. In other embodiments, the distance between two adjacent supporting columns 210 can also be adjusted within the range not exceeding 50 mm according to actual needs. It can be understood that the smaller the distance between two adjacent supporting columns 210, the greater the processing difficulty and the lower the structural strength in the supporting area 110.

[0050] In this embodiment, the distance H that the supporting column 210 extends out of the through hole 111 is 2 mm to 4 mm. By limiting the distance H that the supporting column 210 extends out of the through hole 111 within the range of 2 mm to 4 mm, not only can the supporting column 210 support the PCB, but also the situation that the PCB is too far from the mounting plate 100 can be avoided, and the center of gravity of the PCB on the supporting column 210 can be reduced. It should be noted that, in this embodiment, the thickness of the base 220 is 0.3 mm, the axial length of the supporting column 210 is 3.5 mm, the thickness of the mounting plate 100 is 1.2 mm, and the distance H that the supporting column 210 extends out of the through hole 111 is 2.3 mm. In other embodiments, the distance H that the supporting column 210 extends out of the through hole 111 can also be adjusted within the range of 1 mm to 2 mm according to actual needs, and this embodiment does not make specific limitations.

[0051] In addition, in this embodiment, the supporting column 210 includes a supporting column main body 211 and a guiding portion 212. Among them, one end of the supporting column main body 211 is connected to the base 220, the guiding portion 212 is connected to the other end of the supporting column main body 211, and the diameter of the guiding portion 212 gradually decreases during the process of extending from the end close to the supporting column main body 211 to the direction away from the supporting column main body 211. By providing the guiding portion 212 at the end of the supporting column main body 211 far from the base 220, and making the diameter of the guiding portion 212 gradually decrease during the process of extending from the end close to the supporting column main body 211 to the direction away from the supporting column main body 211, it can provide guidance for the docking of the guiding portion 212 and the through hole 111, and further improve the docking efficiency of the supporting column 210 and the through hole 111.

[0052] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. Anti-welding wire printing nail bed, characterized in that include: A mounting plate (100), the mounting plate (100) having at least one supporting area (110), the supporting area (110) being directly opposite to a substrate on a PCB on which no components are arranged, the supporting area (110) being provided with holes (111) spaced apart from one another; as well as A supporting member (200), the supporting member (200) and the mounting plate (100) are stacked from bottom to top, the output end of the supporting member (200) passes through an end of the mounting plate (100) away from the PCB and extends out of the through hole (111), each of the through holes (111) is arranged corresponding to a supporting member (200), and the output end of the supporting member (200) abuts against a substrate on the PCB where no components are arranged.

2. The anti-welding wire printing nail bed according to claim 1, wherein The supporting member (200) comprises: a base (220); and A supporting column (210) is connected to the base (220), and the supporting column (210) can pass through the end of the mounting plate (100) away from the PCB and extend out of the through hole (111), and the end of the supporting column (210) away from the base (220) abuts against a substrate on the PCB where no components are arranged.

3. The anti-welding wire printing nail bed according to claim 2, characterized in that, The supporting column (210) comprises: A supporting column body (211), one end of which is connected to the base (220); and A guide portion (212), wherein the guide portion (212) is connected to the other end of the supporting column body (211), and the diameter of the guide portion (212) gradually decreases in the process of extending from one end close to the supporting column body (211) toward a direction away from the supporting column body (211).

4. The anti-welding wire printing nail bed according to claim 1, wherein, The anti-welding silk screen nail bed also includes: A positioning member, wherein a positioning hole (120) is provided on the mounting plate (100), and a docking hole is provided on the PCB, and the positioning member is detachably fixed to the positioning hole (120) and the docking hole in sequence.

5. The anti-welding wire printing nail bed according to claim 4, wherein The mounting plate (100) is rectangular, and the corners of the mounting plate (100) are provided with positioning holes (120), and each positioning hole (120) is arranged corresponding to a positioning member and a docking hole.

6. The anti-welding wire printing nail bed according to claim 4, characterized in that The positioning hole (120) and / or the docking hole are waist-shaped holes.

7. The anti-welding wire printing nail bed according to claim 1, characterized in that, The mounting plate (100) and the supporting member (200) are made of insulating material.

8. The anti-welding wire printing nail bed according to claim 1, characterized in that, The end surface of the mounting plate (100) close to the supporting member (200) is covered with an elastic buffer layer; And / or, the end surface of the supporting member (200) close to the mounting plate (100) is covered with an elastic buffer layer.

9. The anti-welding wire printing nail bed according to claim 1, characterized in that The maximum distance between two adjacent supporting members (200) does not exceed 50 mm.

10. The anti-welding wire printing nail bed according to claim 1, wherein, The distance H that the output end of the supporting member (200) extends out of the perforated hole (111) is 2 mm to 4 mm.

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