Circuit board with positioning holes

Abstract

The utility model relates to the technical field of circuit boards, in particular to a circuit board with positioning holes, which comprises a circuit board main body, mounting holes and the positioning holes are arranged on the circuit board main body, a welding table is arranged below the circuit board main body, a clamping cylinder and a magnetic positioning seat are arranged on the welding table, and positioning insertion columns are arranged on the magnetic positioning seat. A positioning hole is formed in the circuit board body, damping anti-falling protrusions are arranged on the inner hole wall of the positioning hole, a top arc-shaped inverted face is arranged at an upper end opening of the positioning hole, a bottom arc-shaped inverted face is arranged at a lower end opening of the positioning hole, smooth coatings are arranged on the top arc-shaped inverted face and the bottom arc-shaped inverted face, a bonding layer is arranged on the side wall of the circuit board body, and a pressure-resistant sheath is arranged on the bonding layer. The surface of the circuit board main body, which needs to be welded with the electronic component, faces upwards, so that the positioning property of avoiding reverse clamping when the circuit board main body is clamped is improved, and the situation that the side wall surface of the plastic circuit board main body is crushed, deformed and abraded is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, in particular to a circuit board with positioning holes. Background Art

[0002] A circuit board, also known as a printed circuit board, is an indispensable component of electronic devices. It provides electrical connections between electronic components, allowing current to flow in a predetermined path, thereby realizing the functions of electronic devices.

[0003] During the production and processing of circuit boards, electronic components need to be soldered on their surfaces. Generally, the operator clamps the circuit board body on a soldering table and then performs the soldering operation on the electronic components.

[0004] At present, most existing circuit boards are rectangular and symmetrical. When soldering, if the operator is not careful when holding and clamping the circuit board, it is very likely to be clamped upside down, that is, the soldering surface of the circuit board will be placed upside down when clamped. This will cause the operator to flip the clamped circuit board over and clamp it again, which is a tedious operation. This greatly reduces the positioning of the circuit board body to avoid clamping it upside down when being clamped. Utility Model Content

[0005] The purpose of the utility model is to solve the above-mentioned shortcomings in the prior art and to propose a circuit board with positioning holes.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A circuit board with positioning holes is designed, comprising a circuit board body, the circuit board body being provided with mounting holes and positioning holes, a welding platform being provided below the circuit board body, the welding platform being provided with a clamping cylinder and a magnetic positioning seat, the clamping cylinder being provided with a clamping plate, the clamping plate being provided with a clamping groove, and the magnetic positioning seat being provided with a positioning pin;

[0008] A damping anti-slip protrusion is provided on the inner wall of the positioning hole, a top arc inverted surface is provided at the upper end opening of the positioning hole, and a bottom arc inverted surface is provided at the lower end opening of the positioning hole, and a smooth coating is provided on the top arc inverted surface and the bottom arc inverted surface;

[0009] An adhesive layer is provided on the side wall of the circuit board body, a pressure-resistant sheath is provided on the adhesive layer, and an anti-wear layer is provided on the surface of the pressure-resistant sheath.

[0010] Furthermore, the positioning holes vertically penetrate the circuit board body and are asymmetrically arranged, and the positioning pins are cylindrical in structure as a whole.

[0011] Furthermore, the lower end surface of the magnetic positioning seat is magnetically adsorbed to the welding table, and the magnetic positioning seat as a whole is a rectangular plate structure.

[0012] Furthermore, the damping anti-slip protrusions are in the form of long strips of semi-arc protrusion structures as a whole. The damping anti-slip protrusions are arranged in three groups vertically, with each group consisting of twenty protrusions arranged in a circle and in extrusion contact with the positioning posts.

[0013] Furthermore, the surfaces of the top arc inverted surface and the bottom arc inverted surface are uniformly coated with a smooth coating, and the smooth coating is a fluorocarbon coating with a thickness of twenty to twenty-five microns.

[0014] Furthermore, the clamping groove passes through the clamping plate longitudinally, and the clamping groove is in contact with and sleeved on the pressure-resistant sheath.

[0015] Furthermore, the adhesive layer is arranged between the pressure-resistant sheath and the side surface of the circuit board body, the side corner of the pressure-resistant sheath is provided with an arc surface, and the anti-wear layer is arranged on the outer surface of the pressure-resistant sheath and the arc surface.

[0016] The circuit board with positioning holes proposed in the present invention has the following beneficial effects:

[0017] 1. The utility model provides a positioning hole structure with a damping anti-slip protrusion on the circuit board body. During welding, the magnetic positioning seat is first positioned according to the position and size of the positioning hole on the current circuit board body and magnetically attracted to the surface of the welding table. Then, the positioning hole on the circuit board body is passed through the positioning pin on the magnetic positioning seat. Then, the two sides of the circuit board body are electrically clamped by the clamping cylinder. Since the position of the positioning hole is designed to be asymmetrical, the circuit board body can be prevented from being clamped upside down, ensuring that the surface of the circuit board body to be welded with electronic components faces upward, thereby avoiding the tedious operation of the operator turning over the clamped circuit board body and clamping it again, thereby effectively improving the positioning of the circuit board body to avoid being clamped upside down when it is clamped.

[0018] 2. The utility model provides a pressure-resistant sheath structure with an anti-wear layer on the side wall surface of the circuit board body, so as to avoid the side wall surface of the plastic circuit board body from being crushed, deformed and worn when the side wall surface of the circuit board body is electrically clamped by the clamping cylinder and the clamping plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an exploded view of the circuit board body of the present invention in a non-positioned, clamped, and plugged state;

[0020] Figure 2 For the utility model Figure 1 A three-dimensional schematic diagram of the main body of the circuit board;

[0021] Figure 3 This is a three-dimensional schematic diagram of the circuit board body of the present invention in a positioned, clamped and plugged state;

[0022] Figure 4 For the utility model Figure 2 A partial enlarged view of the positioning hole and pressure-resistant sheath structure at the middle L;

[0023] Figure 5 For the utility model Figure 3 mid-front cross-sectional view;

[0024] Figure 6 For the utility model Figure 5 A partial enlarged view of point M in the middle.

[0025] In the figure: 1 circuit board body; 11 mounting hole; 2 positioning hole; 21 damping anti-drop protrusion; 22 smooth coating; 3 top arc inverted surface; 4 bottom arc inverted surface; 5 pressure-resistant sheath; 51 arc surface; 52 anti-wear layer; 6 welding table; 61 clamping cylinder; 62 clamping plate; 63 clamping groove; 7 magnetic positioning seat; 71 positioning column; 8 adhesive layer. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] Reference Figure 1-6 A circuit board with positioning holes includes a circuit board body 1, the circuit board body 1 is provided with a mounting hole 11 and a positioning hole 2, a soldering table 6 is provided below the circuit board body 1, the soldering table 6 is provided with a clamping cylinder 61 and a magnetic positioning seat 7, the clamping cylinder 61 is provided with a clamping plate 62, the clamping plate 62 is provided with a clamping groove 63, and the magnetic positioning seat 7 is provided with a positioning pin 71;

[0028] A damping anti-slip protrusion 21 is provided on the inner wall of the positioning hole 2, a top arc inverted surface 3 is provided at the upper opening of the positioning hole 2, and a bottom arc inverted surface 4 is provided at the lower opening of the positioning hole 2. A smooth coating 22 is provided on the top arc inverted surface 3 and the bottom arc inverted surface 4;

[0029] An adhesive layer 8 is provided on the side wall of the circuit board body 1, a pressure-resistant sheath 5 is provided on the adhesive layer 8, and an anti-wear layer 52 is provided on the surface of the pressure-resistant sheath 5. The pressure-resistant sheath 5 is made of plastic steel, which is insulating and resistant to extrusion deformation. It can be firmly bonded to the circuit board body 1 through the adhesive layer 8 made of epoxy resin glue.

[0030] The positioning hole 2 passes through the circuit board body 1 vertically and is asymmetrically arranged. The positioning pin 71 is a cylindrical structure as a whole. The asymmetrically arranged positioning hole 2 can avoid the circuit board body 1 from being clamped upside down, ensuring that the surface of the circuit board body 1 where the electronic components need to be soldered faces upward, thereby avoiding the tedious operation of the operator turning over the clamped circuit board body 1 and clamping it again.

[0031] The lower end surface of the magnetic positioning seat 7 is magnetically adsorbed to the welding table 6. The magnetic positioning seat 7 is a rectangular plate structure as a whole. The magnetic positioning seat 7 is made of artificial magnet material as a whole, and can be stably magnetically positioned and adsorbed with the metal welding table 6. At the same time, it can slide and magnetically position the positioning holes 2 on the circuit board main body 1 of different batches at will, thereby improving the flexibility of use.

[0032] The damping anti-slip protrusion 21 is a long semi-arc protrusion structure as a whole. The damping anti-slip protrusion 21 is arranged in three groups vertically, each group consists of twenty protrusions arranged in a circle and is in squeeze contact with the positioning column 71. The damping anti-slip protrusion 21 is made of silicone rubber and has excellent high-elastic damping friction, which prevents the positioning column 71 inserted into the positioning hole 11 from slipping.

[0033] The surfaces of the top arc inverted surface 3 and the bottom arc inverted surface 4 are evenly coated with a smooth coating 22. The smooth coating 22 is a fluorocarbon coating with a thickness of twenty to twenty-five microns. The fluorocarbon coating has excellent smoothness, a flat and smooth surface, and low friction. Combined with the top arc inverted surface 3 and the bottom arc inverted surface 4, the effective plug-in area is increased, thereby improving the smoothness of the insertion and removal of the positioning pin 71 into or out of the positioning hole 2.

[0034] The clamping groove 63 passes through the clamping plate 62 longitudinally, and the clamping groove 63 is in contact with and sleeved with the pressure-resistant sheath 5 , thereby effectively clamping the circuit board bodies 1 of different widths, thereby increasing the applicability of the clamping plate 62 .

[0035] The adhesive layer 8 is arranged between the pressure-resistant sheath 5 and the side surface of the circuit board body 1. The side corner of the pressure-resistant sheath 5 is provided with an arc surface 51. When the side wall surface of the circuit board body 1 is clamped, the arc surface 51 can improve the smoothness of the pressure-resistant sheath 5 being clamped by the clamping groove.

[0036] The anti-wear layer 52 is arranged on the outer surface of the pressure-resistant sheath 5 and the arc surface 51. The anti-wear layer 52 is a PTFE polytetrafluoroethylene coating, also known as Teflon, which has excellent wear resistance and prevents surface wear of the pressure-resistant sheath 5.

[0037] Working method: During welding, first position the magnetic positioning seat 7 according to the position and size of the positioning hole 2 on the current circuit board main body 1 and magnetically absorb it on the surface of the welding table 6, then pass the positioning hole 2 on the circuit board main body 1 through the positioning pin 71 on the magnetic positioning seat 7, then start the clamping cylinder 61 to drive the clamping plates 62 on both sides to move toward each other, and after the clamping groove 63 firmly clamps the pressure-resistant sheath 5, stop the clamping cylinder 61. At this time, the electronic components can be welded to the upper end of the circuit board main body 1 to be welded. Since the position of the positioning hole 2 is an asymmetric design, it can avoid the situation where the circuit board main body 1 is clamped in reverse, and ensure that the surface of the circuit board main body 1 to be welded with electronic components faces upward, thereby avoiding the tedious operation of the operator turning over the clamped circuit board main body 1 and clamping it again, effectively improving the positioning of the circuit board main body 1 to avoid clamping when it is clamped.

[0038] In addition, by providing a pressure-resistant sheath 5 structure with an anti-wear layer 52 on the side wall surface of the circuit board body 1, when the side wall surface of the circuit board body 1 is electrically clamped by the clamping cylinder 61 and the clamping plate 62, the side wall surface of the circuit board body 1 made of plastic material is avoided from being crushed, deformed and worn.

[0039] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A circuit board with positioning holes, comprising a circuit board body (1), characterized in that: The circuit board body (1) is provided with a mounting hole (11) and a positioning hole (2); a welding platform (6) is provided below the circuit board body (1); a clamping cylinder (61) and a magnetic positioning seat (7) are provided on the welding platform (6); a clamping plate (62) is provided on the clamping cylinder (61); a clamping groove (63) is provided on the clamping plate (62); and a positioning pin (71) is provided on the magnetic positioning seat (7); A damping anti-slip protrusion (21) is provided on the inner wall of the positioning hole (2), a top arc inverted surface (3) is provided at the upper opening of the positioning hole (2), and a bottom arc inverted surface (4) is provided at the lower opening of the positioning hole (2), and a smooth coating (22) is provided on the top arc inverted surface (3) and the bottom arc inverted surface (4); An adhesive layer (8) is provided on the side wall of the circuit board body (1), a pressure-resistant sheath (5) is provided on the adhesive layer (8), and an anti-wear layer (52) is provided on the surface of the pressure-resistant sheath (5).

2. The circuit board with positioning holes according to claim 1, characterized in that: The positioning hole (2) vertically penetrates the circuit board body (1) and is asymmetrically arranged, and the positioning pin (71) is a cylindrical structure as a whole.

3. The circuit board with positioning holes according to claim 1, characterized in that: The lower end surface of the magnetic positioning seat (7) is magnetically adsorbed to the welding platform (6), and the magnetic positioning seat (7) is a rectangular plate structure as a whole.

4. The circuit board with positioning holes according to claim 1, characterized in that: The damping anti-slip protrusions (21) are in the form of a long strip-shaped semi-arc protrusion structure. The damping anti-slip protrusions (21) are arranged in three groups vertically, with each group comprising twenty protrusions arranged in a circle and in press contact with the positioning plug posts (71).

5. The circuit board with positioning holes according to claim 1, characterized in that: The surfaces of the top arc inverted surface (3) and the bottom arc inverted surface (4) are evenly coated with a smooth coating (22), and the smooth coating (22) is a fluorocarbon coating with a thickness of twenty to twenty-five micrometers.

6. The circuit board with positioning holes according to claim 1, characterized in that: The clamping groove (63) passes through the clamping plate (62) longitudinally, and the clamping groove (63) is in contact with and sleeved on the pressure-resistant sheath (5).

7. The circuit board with positioning holes according to claim 1, characterized in that: The adhesive layer (8) is arranged between the pressure-resistant sheath (5) and the side surface of the circuit board body (1); a circular arc surface (51) is provided at the side corner of the pressure-resistant sheath (5); and the anti-wear layer (52) is arranged on the outer surface of the pressure-resistant sheath (5) and the circular arc surface (51).

Images