Electronic connector containing tin wire and stamping process thereof

Abstract

The invention discloses an electronic connector containing tin wire and a stamping process thereof. The electronic connector comprises a connecting rod, one end of which is provided with a supporting plate, one end of which is connected with a buffer part, and a PCB board welding part is connected below the buffer part. The main steps are as follows: S1: initial punching of raw materials, S2: secondary punching of raw materials, S3: initial bending of clamping claws, S4: secondary bending of clamping claws, S5: final adjustment of clamping claws, S6: feeding of tin wire, S7: clamping of tin wire, S8: cutting of tin wire, S9: cutting of waste materials, S10: clamping of tin wire, and S11: overall stamping, bending and shaping. The clamping claws are provided on the electronic connection to clamp the tin wire, and the stamping and bending of the clamping claws are completed in multiple steps instead of in one step, thereby ensuring the bending effect and minimizing the possibility of damaging the electronic connector. When installing the tin wire, the operation is divided into multiple steps, and the clamping is then clamped to ensure that the tin wire will not fall off. During welding, the clamping claws only need to be in contact with the PCB board and then heated, thereby reducing the situation that the electronic connector is damaged.

Description

Technical Field

[0001] The invention relates to the field of precision metal components, and in particular to an electronic connector containing tin wire and a stamping process thereof. Background Art

[0002] With the rapid development of the electronics industry, some electronic devices, such as mobile phones, laptops and other products, not only require high performance, but also hope to be miniaturized and thin; in order to meet such needs, the electronic components of electronic devices must also be relatively smaller, lighter, more solid and practical; among them, electronic connectors are one of the most important electronic components in electronic devices, and their quality directly affects the quality and reliability of electronic devices.

[0003] Most of the electronic connectors in the prior art need to align the tin wire with the contact point between the electronic connector and the PCB board before soldering when connecting them. This operation is likely to cause soldering leaks and mis-soldering, affecting the reliability of the electronic products. The rigidity of the electronic connector itself is relatively weak. The prior art also requires the welding machine to be in contact when the tin wire contacts the electronic connector, which is likely to cause damage to the electronic connector. When stamping and bending products, a one-time bending process is usually adopted. Although this can increase production capacity to a certain extent, it often results in incomplete bending due to metal springback, greatly affecting the product yield. Summary of the invention

[0004] The main purpose of the present invention is to provide an electronic connector containing tin wire and a stamping process thereof, so as to solve the problems of easy soldering leakage, wrong soldering and easy damage to the electronic connector when soldering a PCB board in the prior art.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] An electronic connector containing tin wire comprises a connecting rod, one end of which is provided with a supporting plate, one end of which is connected with a buffer part, and a PCB board welding part is connected below the buffer part.

[0007] Preferably, the connecting rod is provided with a circular hole at one end away from the supporting plate.

[0008] Preferably, the buffer portion is a U-shaped structure, one end of the buffer portion is connected to the support plate, and the other end is connected to the PCB board welding portion, the PCB board welding portion is a U-shaped structure and forms an S shape with the buffer portion, and two groups of claws are provided on both sides of the U-shaped structure of the PCB board welding portion, and tin wire is clamped in the claws.

[0009] Preferably, the tin wire is wrapped with flux.

[0010] A stamping process for an electronic connector containing tin wire comprises the following steps:

[0011] S1: Preliminary punching of raw materials: punching a long strip of plate so that two rows of rectangular holes are formed in the plate along the conveying direction, and the two rows of rectangular holes correspond to each other one by one;

[0012] S2: Secondary punching of the raw material: Punching of special-shaped holes is performed on two rectangular holes arranged side by side, wherein the special-shaped holes form claws at the ends of the two adjacent rectangular holes, and two rows of rectangular holes arranged side by side form two rows of claws arranged side by side;

[0013] S3: Initial bending of the jaws: The upper die of the initial bending station of the jaws is an isosceles trapezoidal punch, and the lower die is an isosceles trapezoidal concave die corresponding thereto. The jaws are tilted up after stamping;

[0014] S4: Secondary bending of the jaws: The upper die of the secondary bending station of the jaws is a rectangular punch, and the lower die is a U-shaped die. After stamping, the angle of the raised jaws is between 80° and 90°;

[0015] S5: Final adjustment of the jaws: The upper die of the final adjustment station of the jaws is an inverted U-shaped die, and the lower die is a rectangular punch. After stamping, the angle of the jaws is between 90° and 95°.

[0016] S6: Tin wire feeding: Two parallel tin wires enter the machine from the side after the jaws are bent, and the position of the tin wires is kept at the jaw position of the jaws;

[0017] S7: The tin wire is stuck: After the tin wire is located at the clamping position of the clamping claw, the upper die is used to press the tin wire into the clamping claw;

[0018] S8: Tin wire cutting: Use the cutting knife in the template to cut the tin wire so that there is a section of tin wire in each set of claws;

[0019] S9: waste cutting: cut off the excess waste on one side of the clamping claw by punching and cutting the template;

[0020] S10: Tin wire stuck: The tin wire is stuck and deformed in the claw by stamping the template, so that the surface of the tin wire and the claw is smooth and becomes a whole, preventing the tin wire from falling off;

[0021] S11: Overall stamping and bending: Through stamping and bending, the end of the product with the tin wire is bent into a hook shape, which is convenient for connecting to the PCB board.

[0022] Preferably, the irregular hole comprises a connecting section, a bending section is arranged below the connecting section, a waste section is arranged below the bending section, each section is connected by a positioning portion, and two of the positioning portions correspond to two of the rectangular holes.

[0023] Preferably, at the initial bending point of the claw, the bending angle of the claw is 30° to 60°.

[0024] Preferably, in step S11, one end provided with the claw and the tin wire is firstly punched and bent into a PCB board welding portion, and then one end close to the PCB board welding portion is punched and bent into a buffer portion.

[0025] Preferably, when the tin wire is located at the clamping station, the upper die is a wedge-shaped die.

[0026] Preferably, when located at the tin wire clamping station, the upper die is an isosceles trapezoidal die, and the farthest distance from the isosceles trapezoidal die to the product is smaller than the diameter of the tin wire and the height of the clamping claws, so as to facilitate extrusion deformation.

[0027] Beneficial effects: By setting a claw on the electronic connector to clamp the tin wire, the electronic connector comes with a tin wire that does not need to be soldered later, which is convenient and quick. When stamping and bending the claws, it is completed in multiple steps instead of in one step, which ensures the bending effect and minimizes the possibility of damaging the electronic connector. When installing the tin wire, it is operated in multiple steps and then locked after being clamped, which ensures that the tin wire will not fall off, ensuring the quality of the product. When using this product to connect the PCB board, the situation of missed soldering and wrong soldering is greatly reduced. Moreover, because the electronic connector comes with a tin wire, it only needs to contact and heat the PCB board during welding, and no additional machine is required for contact and extrusion, which reduces the situation of damage to the electronic connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below.

[0029] Figure 1 It is a front view schematic diagram of the product of the present invention;

[0030] Figure 2 It is a schematic side view of the product of the present invention;

[0031] Figure 3 It is a schematic diagram of the assembly of the tin wire and the claw of the product of the present invention;

[0032] Figure 4 It is a stamping process flow chart of the present invention;

[0033] Figure 5 It is a bending process flow chart of the present invention;

[0034] Figure 6 A schematic diagram of a punching hole of the present invention;

[0035] Figure 7 It is a schematic diagram of tin wire assembly of the present invention;

[0036] Among them: 1. Connecting rod; 2. Support plate; 3. Buffer part; 4. PCB board welding part; 5. Circular hole; 6. Clamping claw; 7. Tin wire; 8. Rectangular hole; 9. Special-shaped hole; 10. Connecting section; 11. Bending section; 12. Waste section; 13. Positioning part. DETAILED DESCRIPTION

[0037] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0038] like Figure 1 , 2 3 shows an electronic connector containing tin wire, comprising a connecting rod 1, a supporting plate 2 is provided at one end of the connecting rod 1, a circular hole 5 is provided at the end of the connecting rod 1 away from the supporting plate 2, the circular hole 5 is used for positioning, and the circular hole 5 can be used for more accurate welding to the PCB board when welding the PCB board, a buffer part 3 is connected to one end of the supporting plate 2, a PCB board welding part 4 is connected below the buffer part 3, the buffer part 3 is a U-shaped structure, since the specification of the electronic connector is very small, the interval on both sides of the buffer part 3 is very small, and the surface of the product is still pre-tinned, after heating to melt the tin wire 7, it is easy to produce infiltration, under the dual effect of gravity, the melted tin wire 7 is very easy to flow into the buffer part 3, resulting in a smaller welding area, so the spacing on both sides of the U-shaped structure is gradually increased in the direction of the U-shaped opening, so that the angle between the straight lines where the two sides of the U-shaped structure are located is about 4°, which greatly improves this problem. , even if the PCB board is squeezed during welding, the U-shaped structure can buffer the pressure to a certain extent, and protect the electronic connector to a certain extent. One end of the buffer part 3 is connected to the support plate 2, and the other end is connected to the PCB board welding part 4. The PCB board welding part 4 is a U-shaped structure and forms an S shape with the buffer part 3. Two groups of claws 6 are arranged on both sides of the U-shaped structure of the PCB board welding part 4. Tin wire 7 is clamped in the claws 6. The tin wire 7 is wrapped with flux. The internal space of the U-shaped structure of the PCB board welding part 4 corresponds to the PCB board to be welded, which ensures the strength after welding. The claws 6 and the tin wire 7 are squeezed and deformed to be integrated into a smooth surface. When welding the PCB board, the PCB board will not be damaged. In addition, due to the design of the self-contained tin wire 7, the welding with the PCB board can be completed by heating, which is convenient and quick, and greatly reduces the operations such as wrong welding and leakage welding caused by the falling of the tin wire 7.

[0039] The present invention provides a stamping process for an electronic connector containing tin wire 7, comprising the following steps:

[0040] like Figure 4 ,6 , as shown in 7

[0041] S1: Preliminary punching of raw materials: punching a long strip of plate so that two rows of rectangular holes 8 are formed in the plate along the conveying direction, and the two rows of rectangular holes 8 correspond to each other one by one;

[0042] S2: Secondary punching of raw materials: Punching of special-shaped holes 9 is performed in alignment with two rectangular holes 8 arranged side by side. The special-shaped holes 9 are divided into three sections, namely, a connecting section 10, a bending section and a waste section 12. Each section is connected by a positioning portion 13. Two positioning portions 13 correspond to two rectangular holes 8. The special-shaped holes 9 form claws 6 at the ends of two adjacent rectangular holes 8. Two rows of rectangular holes 8 arranged side by side form two rows of claws 6 arranged side by side. After punching, two adjacent special-shaped holes 9 form a planar shape of the electronic connector before bending. A support plate 2 and a buffer portion 3 are formed between the connecting sections 10. The bending section forms a PCB board welding portion 4. Multiple punching is adopted instead of one-time punching, which well avoids the situation that the product is easily damaged due to its small size.

[0043] S3: Preliminary bending of the claw 6: The upper die of the preliminary bending station of the claw 6 is an isosceles trapezoidal convex die, and the lower die is an isosceles trapezoidal concave die corresponding thereto. After stamping, the claw 6 is tilted up. The bending angle of the claw 6 is 30° to 60°. If it is bent to 90° by stamping at one time, it is easy to cause damage;

[0044] S4: Secondary bending of the claw 6: The upper die of the secondary bending station of the claw 6 is a rectangular convex die, and the lower die is a U-shaped concave die. After stamping, the raised claw 6 is bent to 90°;

[0045] S5: Final adjustment of the claw 6: The upper die of the final adjustment station of the claw 6 is an inverted U-shaped concave die, and the lower die is a rectangular convex die. After stamping, the angle of the claw 6 is greater than 90°. After the angle of the claw 6 is greater than 90°, it can be initially stuck when the tin wire 7 is inserted, so as to prevent the tin wire 7 from falling off before it is stuck and affecting the product quality;

[0046] S6: feeding of tin wire 7: two parallel tin wires 7 enter the machine from the side of the machine after the jaws 6 are bent, and the position of the tin wires 7 is maintained at the clamping position of the jaws 6, and the position of the tin wires 7 feeding is between the final adjustment position of the jaws 6 and the clamping position of the tin wires 7;

[0047] S7: The tin wire 7 is stuck: After the tin wire 7 is located at the clamping position of the clamping claw 6, the upper die is used to punch the tin wire 7 into the clamping claw 6. The upper die is a wedge-shaped concave die. After the tin wire 7 is clamped into the clamping claw 6, it moves synchronously with the movement of the long strip plate to ensure that the tin wire 7 will not be missed;

[0048] S8: cutting the tin wire 7: cutting the tin wire 7 by a cutting knife in the template, so that there is a section of tin wire 7 in each group of jaws 6, and at least two groups of cutting knives are provided for cutting the tin wire 7, and the setting of at least two groups of cutting knives ensures the cutting efficiency;

[0049] S9: waste cutting: cutting off the excess waste on one side of the clamping claw 6 by punching and cutting the template;

[0050] S10: The tin wire 7 is stuck: The tin wire 7 is stuck and deformed in the claw 6 by stamping the template, so that the surface of the tin wire 7 and the claw 6 are smooth and become a whole, and the tin wire 7 is prevented from falling off. The upper mold is an isosceles trapezoidal die, and the farthest distance from the isosceles trapezoidal die to the product is smaller than the diameter of the tin wire 7 and the height of the claw 6, which is convenient for extrusion and deformation;

[0051] like Figure 5 Shown

[0052] S11: Overall stamping and bending to finalize: First, bend and tilt the end portion provided with the first clamping claw 6 and the tin wire 7 by about 45°, then bend the middle section of the two clamping claws 6 by 90° twice, and repeat the stamping after bending to prevent metal rebound and incomplete bending, then stamp and bend the section where the first clamping claw 6 is located to complete the manufacture of the PCB board welding part 4, then bend the PCB board welding part 4 as a whole by 180° four times in the opposite direction of the opening direction to complete the manufacture of the buffer part 3, and finally bend the buffer part 3 and the PCB board welding part 4 by 90° and repeat the stamping to prevent metal rebound to complete the manufacture of the entire electronic connector.

Claims

1. An electronic connector containing tin wire, characterized in that: The invention comprises a connecting rod (1), wherein a supporting plate (2) is arranged at one end of the connecting rod (1), and a buffer part (3) is connected to one end of the supporting plate (2), wherein the buffer part (3) is a U-shaped structure, and the spacing between the two sides of the U-shaped structure gradually increases towards the opening direction, and a PCB board welding part (4) is connected below the buffer part (3); one end of the buffer part (3) is connected to the supporting plate (2), and the other end is connected to the PCB board welding part (4), wherein the PCB board welding part (4) is a U-shaped structure and forms an S shape with the buffer part (3), and two groups of claws (6) are arranged on both sides of the U-shaped structure of the PCB board welding part (4), and tin wires (7) are clamped in the claws (6).

2. The electronic connector containing tin wire according to claim 1, characterized in that: The connecting rod (1) is provided with a circular hole (5) at one end away from the supporting plate (2).

3. The electronic connector containing tin wire according to claim 1, characterized in that: The tin wire (7) is internally wrapped with soldering flux.

4. A stamping process for an electronic connector containing tin wire as claimed in any one of claims 1 to 3, characterized in that: The following steps are involved: S1: Preliminary punching of raw materials: punching a long strip of plate material so that two rows of rectangular holes (8) are formed in the plate material along the conveying direction, and the two rows of rectangular holes (8) correspond to each other one by one; S2: secondary punching of the raw material: punching a special-shaped hole (9) aligned with two rectangular holes (8) arranged side by side, wherein the special-shaped hole (9) forms a clamping claw (6) at the end of the two adjacent rectangular holes (8), and two rows of rectangular holes (8) arranged side by side form two rows of clamping claws (6); S3: Initial bending of the clamping jaws: The upper die of the initial bending station of the clamping jaws (6) is an isosceles trapezoidal convex die, and the lower die is an isosceles trapezoidal concave die corresponding thereto, and the clamping jaws (6) are tilted up after stamping; S4: Secondary bending of the claw: The upper die of the secondary bending station of the claw (6) is a rectangular punch, and the lower die is a U-shaped die. After stamping, the angle of the raised claw (6) is between 80° and 90°; S5: Final adjustment of the clamping jaws: The upper die of the final adjustment station of the clamping jaws (6) is an inverted U-shaped concave die, and the lower die is a rectangular convex die, so that the clamping jaws (6) are tilted at an angle between 90° and 95° after stamping; S6: tin wire feeding: two parallel tin wires (7) enter the machine from the side of the machine after the jaws are bent, and the position of the tin wires (7) is maintained at the clamping position of the jaws (6); S7: The tin wire is stuck: after the tin wire (7) is located at the clamping position of the clamping claw (6), the upper die is used to press the tin wire (7) into the clamping claw (6); S8: cutting the tin wire: cutting the tin wire (7) by a cutting knife in the template so that there is a section of tin wire (7) in each set of claws (6); S9: waste cutting: cutting off the excess waste on one side of the clamping claw (6) by punching and cutting the template; S10: The tin wire is stuck: the tin wire (7) is stuck and deformed in the claw (6) by stamping the template, so that the surface of the tin wire (7) and the claw (6) are smooth and form a whole, thereby preventing the tin wire (7) from falling off; S11: Overall stamping and bending: Through stamping and bending, one end of the product with the tin wire (7) is bent into a hook shape to facilitate connection to the PCB board.

5. The stamping process of an electronic connector containing tin wire according to claim 4, characterized in that: The irregular hole (9) comprises a connecting section (10), a bending section (11) is arranged below the connecting section (10), a waste section (12) is arranged below the bending section (11), each section is connected by a positioning portion (13), and two positioning portions (13) correspond to two rectangular holes (8).

6. The stamping process of an electronic connector containing tin wire according to claim 4, characterized in that: At the initial bending position of the clamping claw (6), the bending angle of the clamping claw (6) is 30° to 60°.

7. The stamping process of an electronic connector containing tin wire according to claim 4, characterized in that: In step S11, one end provided with the clamping claw (6) and the tin wire (7) is firstly punched and bent into a PCB board welding portion (4), and then a section close to the PCB board welding portion (4) is punched and bent into a buffer portion (3).

8. The stamping process of an electronic connector containing tin wire according to claim 4, characterized in that: When the tin wire (7) is in the stuck position, the upper die is a wedge-shaped concave die.

9. The stamping process of an electronic connector containing tin wire according to claim 4, characterized in that: When located at the tin wire clamping station, the upper die is an isosceles trapezoidal die, and the maximum distance between the isosceles trapezoidal die and the product is smaller than the diameter of the tin wire (7) and the height of the clamping claw (6), so as to facilitate extrusion deformation.

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