CN117791266A

CN117791266A - Manufacturing process of central needle for connector

Info

Publication number: CN117791266A
Application number: CN202410074423.1A
Authority: CN
Inventors: 于航; 李倩; 唐恺丰; 胡光才; 李睿鑫
Original assignee: Dongguan Weikang Auto Electronics Co ltd
Current assignee: Dongguan Weikang Auto Electronics Co ltd
Priority date: 2024-01-18
Filing date: 2024-01-18
Publication date: 2024-03-29

Abstract

The invention discloses a manufacturing process of a central needle for a connector, which comprises the following steps: continuously feeding copper wires, and cutting according to the length to form copper wire segments, wherein the outer diameter of the copper wire segments is the same as that of a preformed center needle; the copper wire sections are clamped into positioning clamping grooves of the chain belt, and punching and forming clamping thorns are formed on the copper wire sections of the chain belt; positioning a copper wire segment in all positioning clamping grooves of the chain belt to form a chain belt type copper wire segment assembly; conveying the copper wire section assembly to an automaton, and respectively processing two ends of the copper wire section by a cyclone milling cutter to form a welding end and a contact end; continuously electroplating a plurality of copper wire sections in the copper wire section assembly, plating nickel on other parts except the welding end and the contact end of the copper wire sections, plating gold on the outer surface of the contact end, and plating tin on the outer surface of the welding end; simultaneously bending the welding ends of a plurality of copper wire segments in the copper wire segment assembly at one time or one bending to form a plurality of center pins; and (5) detaching the plurality of center pins relative to the chain belt to finish manufacturing.

Description

Manufacturing process of central needle for connector

Technical field:

the invention relates to the technical field of connectors, in particular to a manufacturing process of a center pin for a connector.

The background technology is as follows:

as shown in fig. 1, a center pin 100 for a connector in the prior art includes a main body 101, a contact end 102 formed at the front end of the main body 101 and having an outer diameter smaller than that of the main body 101, and a welding end 103 formed at the rear end of the main body 101 in a bending manner, wherein the middle part of the main body 101 further has a positioning boss 104 having an outer diameter smaller than that of the main body 101.

The steps of the process for manufacturing the center needle 100 may be as shown in fig. 2, wherein in the first step, a copper rod 10 with a length corresponding to the product of the center needle 100 is selected; and a second step of: the material is machined into a required shape and size by a lathe, specifically: the copper bar 10 is clamped by a jig or other mechanisms, the two ends of the copper bar 10 are processed into a contact end 102, a main body part 101 and a welding end 103 which are sequentially connected by lathe, and the clamped part of the copper bar 10 is not required to be processed by lathe to form a positioning boss 104 with a size larger than that of the main body part 101; thirdly, bending the welding end 103 relative to the main body 101; fourth, the contact 102 and/or weld 103 ends are electroplated to make the center pin 100.

The manufacturing process of the center needle 100 comprises the following steps: firstly, the outer diameter of the copper rod needs to be larger than that of the center needle 100, and more waste is generated in the process of lathe machining, so that the material cost is high, for example, more waste is generated in the process of turning and forming the main body part; secondly, when the welding end 103 is formed by bending the copper bar, the copper bar is a part, so that the bending process is difficult to realize automation, and the production cost is high. Finally, because the center pin is a part, the whole gold can only be plated by barrel plating during electroplating, so that the electroplating cost is high.

In view of this, the present inventors have proposed the following means.

The invention comprises the following steps:

the invention aims to overcome the defects of the prior art and provides a manufacturing process of a central needle for a connector.

In order to solve the technical problems, the invention adopts the following first technical scheme: the manufacturing process of the center pin for the connector comprises the following steps: the first step: continuously feeding copper wires, and cutting according to the length to form copper wire sections, wherein the outer diameter of the copper wire sections is the same as that of a preformed central needle; then the copper wire section is clamped into a positioning clamping groove of the chain belt, so that the copper wire section is fixed on the chain belt, wherein two ends of the copper wire section respectively protrude out of two sides of the chain belt; and a second step of: punching and forming outwards protruding bayonet on the copper wire section of the chain belt; and a third step of: continuously repeating the first step and the second step until all the positioning clamping grooves of the chain belt position one copper wire section, so that a plurality of copper wire sections distributed at intervals are positioned on the chain belt to form a chain belt type copper wire section assembly; fourth step: conveying the copper wire segment assembly to an automaton, and machining one end of the copper wire segment by a whirling cutter to form a chamfer so as to form a welding end, or machining one end of the copper wire segment by the whirling cutter to form an elongated welding end with a reduced size; then the cyclone milling cutter is used for processing the other end of the copper wire section to form an elongated contact end with a smaller size; fifth step: continuously electroplating a plurality of copper wire sections in the copper wire section assembly, wherein nickel plating is carried out on other parts of the copper wire sections except for the welding end and the contact end, the outer surface of the contact end is plated with gold, and the outer surface of the welding end is plated with tin; sixth step: simultaneously bending welding ends of a plurality of copper wire segments in the copper wire segment assembly at one time to form a plurality of center pins; or, bending the welding ends of a plurality of copper wire segments in the copper wire segment assembly for a plurality of times, and bending the welding end of one copper wire segment each time to form a plurality of center pins; seventh step: and (5) detaching the plurality of center pins relative to the chain belt to finish manufacturing.

In the fourth step, one end of each copper wire segment is sequentially processed by a cyclone milling cutter to form the welding end, and then the other end of each copper wire segment is sequentially processed by a cyclone milling cutter to form the contact end; or, a plurality of whirlwind milling cutters are adopted to process one end of all the copper wire segments once to form the welding end, and then a plurality of whirlwind milling cutters are adopted to process the other end of all the copper wire segments once to form the contact end; or, sequentially processing one end of each copper wire segment by adopting a cyclone milling cutter to form the welding end, and simultaneously sequentially processing the other end of each copper wire segment by adopting a cyclone milling cutter to form the contact end; or, a plurality of whirling cutters are adopted to process one end of all the copper wire segments at a time to form the welding end, and a plurality of whirling cutters are adopted to process the other end of all the copper wire segments at a time to form the contact end.

Furthermore, in the above technical scheme, the chain belt comprises a substrate, a first side plate and a second side plate which are formed on two sides of the substrate in a bending mode, a plurality of positioning clamping grooves which are in one-to-one correspondence are formed in the first side plate and the second side plate, and a plurality of positioning holes are formed in the substrate.

Furthermore, in the above technical scheme, both sides of the upper end opening of the positioning clamping groove are provided with guide inclined planes, and the two guide inclined planes are distributed in an inverted splayed shape.

In the sixth step, the welding end of the copper wire segment is bent by an automatic bending machine.

In order to solve the technical problems, the invention adopts the following second technical scheme: the manufacturing process of the central needle for the connector comprises the following steps: the first step: continuously feeding copper wires, and cutting according to the length to form copper wire sections, wherein the outer diameter of the copper wire sections is the same as that of a preformed central needle; sequentially clamping the copper wire sections into the positioning clamping grooves of the chain belt one by one until all the positioning clamping grooves of the chain belt position one copper wire section, so that a plurality of copper wire sections distributed at intervals are positioned on the chain belt to form a chain belt type copper wire section assembly; wherein, two ends of the copper wire segment respectively protrude out of two sides of the chain belt; and a second step of: punching all copper wire sections of the chain belt to form outwards protruding bayonet; and a third step of: conveying the copper wire segment assembly to an automaton, and machining one end of the copper wire segment by a whirling cutter to form a chamfer so as to form a welding end, or machining one end of the copper wire segment by the whirling cutter to form an elongated welding end with a reduced size; then the cyclone milling cutter is used for processing the other end of the copper wire section to form an elongated contact end with a smaller size; fourth step: continuously electroplating a plurality of copper wire sections in the copper wire section assembly, wherein nickel plating is carried out on other parts of the copper wire sections except for the welding end and the contact end, the outer surface of the contact end is plated with gold, and the outer surface of the welding end is plated with tin; fifth step: simultaneously bending welding ends of a plurality of copper wire segments in the copper wire segment assembly at one time to form a plurality of center pins; or, bending the welding ends of a plurality of copper wire segments in the copper wire segment assembly for a plurality of times, and bending the welding end of one copper wire segment each time to form a plurality of center pins; sixth step: and (5) detaching the plurality of center pins relative to the chain belt to finish manufacturing.

In the third step, one end of each copper wire segment is sequentially processed by a cyclone milling cutter to form the welding end, and then the other end of each copper wire segment is sequentially processed by a cyclone milling cutter to form the contact end; or, a plurality of whirlwind milling cutters are adopted to process one end of all the copper wire segments once to form the welding end, and then a plurality of whirlwind milling cutters are adopted to process the other end of all the copper wire segments once to form the contact end; or, sequentially processing one end of each copper wire segment by adopting a cyclone milling cutter to form the welding end, and simultaneously sequentially processing the other end of each copper wire segment by adopting a cyclone milling cutter to form the contact end; or, a plurality of whirling cutters are adopted to process one end of all the copper wire segments at a time to form the welding end, and a plurality of whirling cutters are adopted to process the other end of all the copper wire segments at a time to form the contact end.

In the fifth step, the welding end of the copper wire segment is bent by an automatic bending machine.

By adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects: the manufacturing process of the central needle for the connector adopts a copper wire, a copper wire section formed after cutting the copper wire is clamped into a positioning clamping groove of a chain belt, and then the copper wire section is subjected to various processing, and as the outer diameter size of the selected copper wire section is the same as that of the central needle formed by pre-processing, the two ends of the copper wire section are only required to be subjected to cyclone milling processing in the later stage, and the whole copper wire section is not required to be subjected to milling processing; because the chain belt is adopted to simultaneously clamp and fix a plurality of copper wire segments to form the chain belt type copper wire segment assembly, but not the copper wire segment parts, the invention has larger volume, is convenient for transmission, is particularly convenient for realizing continuous electroplating in later period, can realize different plating types for different functional areas of the copper wire segment, only needs to select gold plating specification for the contact end, and does not need gold plating for other areas, thereby greatly reducing the electroplating cost. Meanwhile, the automatic machine on the copper wire section assembly of the chain belt type is convenient to bend and weld the end, the degree of automation is higher, and the working efficiency is higher. And this chain belt type copper wire section subassembly is convenient for adopt whirlwind milling cutter to process formation contact end and welded end to copper wire section both ends, and its processing operation is simpler and more simple and easy, and efficiency is higher.

Description of the drawings:

FIG. 1 is a perspective view of a center pin for a prior art connector;

FIG. 2 is a step diagram of the fabrication of a center pin for a prior art connector;

FIG. 3 is a step diagram of an embodiment of the present invention (lack of a whirling step);

FIG. 4 is a perspective view of a chain belt used in the first/second embodiment of the present invention;

FIG. 5 is a perspective view of a fastener tape used in the first/second embodiment of the present invention assembled with a copper wire section;

FIG. 6 is a schematic view of a first type of missing whirling mill in accordance with the first/second embodiment of the present invention;

FIG. 7 is a schematic view of a second type of missing whirling mill in accordance with the first/second embodiment of the present invention;

FIG. 8 is a schematic view of a third type of missing whirling mill in accordance with the first/second embodiment of the present invention;

FIG. 9 is a schematic diagram of a fourth type of missing whirling mill in accordance with the first/second embodiment of the present invention;

fig. 10 is a step diagram (lack of a whirling step) of the second embodiment of the present invention.

The specific embodiment is as follows:

the invention will be further described with reference to specific examples and figures.

Embodiment one:

referring to fig. 3-9, a process for manufacturing a center pin for a connector includes the following steps:

the first step: continuously feeding the copper wire 2 and cutting the copper wire according to the length to form a copper wire segment 20, wherein the outer diameter size of the copper wire segment 20 is the same as the outer diameter size of the preformed center pin 200; then the copper wire section 20 is clamped into the positioning clamping groove 30 of the chain belt 3, so that the copper wire section 20 is fixed on the chain belt 3, wherein two ends of the copper wire section 20 respectively protrude out of two sides of the chain belt 3, and the copper wire section 20 is convenient to process the two ends of the copper wire section 20;

and a second step of: punching the copper wire section 20 of the chain belt 3 to form a pin 201 protruding outwards, wherein the pin 201 is used for clamping and positioning when the central pin 200 is assembled to form a connector;

and a third step of: the first step and the second step are repeated until all the positioning clamping grooves 30 of the chain belt 3 position one copper wire section 20, so that a plurality of copper wire sections 20 distributed at intervals are positioned on the chain belt 3 to form a chain belt type copper wire section assembly;

fourth step: conveying the copper wire segment assembly to an automaton, and chamfering one end of the copper wire segment 20 by a whirling cutter to form a welding end 202, so as to later manufacture a center pin forming a first structure, or machining one end of the copper wire segment 20 by the whirling cutter to form an elongated welding end 202 with a reduced size; the other end of the copper wire section 20 is processed by a cyclone milling cutter to form an elongated contact end 203 with a reduced size so as to later manufacture a center pin with a second structure;

fifth step: continuously electroplating a plurality of copper wire sections 20 in the copper wire section assembly, wherein nickel plating is carried out on other parts of the copper wire sections 20 except the welding end 202 and the contact end 203, gold plating is carried out on the outer surface of the contact end 203, and tin plating is carried out on the outer surface of the welding end 202;

sixth step: the welding ends 202 of the plurality of copper wire sections 20 in the copper wire section assembly are bent at one time simultaneously to form a plurality of center pins, so that the working efficiency is extremely high; alternatively, the welding ends 202 of the plurality of copper wire segments 20 in the copper wire segment assembly are bent a plurality of times, each time bending the welding ends 202 of one copper wire segment 20, to form a plurality of center pins 200;

seventh step: the plurality of center pins 200 are detached from the chain belt 3, thereby completing the production.

The manufacturing process of the central needle for the connector adopts copper wires, the copper wire sections formed after cutting the copper wires are clamped into the positioning clamping grooves 30 of the chain belt 3, and then the copper wire sections are processed in various ways, and as the outer diameter size of the selected copper wire sections 20 is the same as the outer diameter size of the central needle 200 which is preformed, the two ends of the copper wire sections are only required to be subjected to cyclone milling processing in the later stage, and the whole copper wire sections are not required to be subjected to milling processing; because the chain belt 3 is adopted to clamp and fix a plurality of copper wire segments at the same time to form a chain belt type copper wire segment assembly, but not a copper wire segment part, the invention has larger volume, is convenient for transmission, is particularly convenient for realizing continuous electroplating in later period, can realize different plating types for different functional areas of the copper wire segment, only needs to select gold plating specifications for the contact end, does not need gold plating for other areas, and can greatly reduce the electroplating cost. Meanwhile, the automatic machine on the copper wire section assembly of the chain belt type is convenient to bend and weld the end, the degree of automation is higher, and the working efficiency is higher. And this chain belt formula copper line section subassembly is convenient for adopt whirlwind milling cutter to process and form contact end 201 and welding end 202 to copper line section 20 both ends, and its processing operation is simpler and more simple, and efficiency is higher.

In the fourth step, one end of each copper wire segment 20 is sequentially processed by a cyclone milling cutter to form the welding end 202, and then the other end of each copper wire segment 20 is sequentially processed by a cyclone milling cutter to form the contact end 203, as shown in fig. 6; alternatively, the welding ends 202 are formed by machining one end of all the copper wire segments 20 with a plurality of whirling cutters, and then the contact ends 203 are formed by machining the other end of all the copper wire segments 20 with a plurality of whirling cutters, as shown in fig. 7; alternatively, the welding ends 202 are formed by sequentially machining one end of each copper wire segment 20 by using a cyclone milling cutter, and the contact ends 203 are formed by sequentially machining the other end of each copper wire segment 20 by using a cyclone milling cutter, so that the machining efficiency is extremely high as shown in fig. 8; alternatively, the welding ends 202 are formed by machining one end of all the copper wire segments 20 with a plurality of whirling cutters, and the contact ends 203 are formed by machining the other end of all the copper wire segments 20 with a plurality of whirling cutters, which is extremely high in machining efficiency, as shown in fig. 9. That is, in the third step, any one of the above-mentioned whirling milling methods may be used to perform the processing to meet different use requirements.

The structure of the link belt 3 is specifically described below: the chain belt 3 comprises a base plate 31, a first side plate 32 and a second side plate 34 which are formed on two sides of the base plate 31 in a bending mode, a plurality of positioning clamping grooves 30 which are in one-to-one correspondence are formed in the first side plate 32 and the second side plate 34, a plurality of positioning holes 311 are formed in the base plate 31, the positioning holes 311 are used for being clamped and positioned with positioning columns of a machine/equipment, so that the chain belt 3 can be ensured to be stably installed on the machine/equipment, the chain belt 3 can be conveniently conveyed, or a copper wire section can be machined after the chain belt 3 is positioned.

The two sides of the opening at the upper end of the positioning clamping groove 30 are provided with the guide inclined planes 301, the two guide inclined planes 301 are distributed in an inverted splayed shape, the guide inclined planes 301 have an excellent guide effect, when a copper wire section is clamped into the positioning clamping groove 30, the copper wire section and the positioning clamping groove 30 do not need to be precisely aligned, and the assembly can be performed in a blind insertion mode, that is, even if the copper wire section and the opening of the positioning clamping groove 30 are formed with deviation, the copper wire section can be smoothly clamped into the positioning clamping groove 30 under the guide of the guide inclined planes 301 as long as the copper wire section can be contacted with the guide inclined planes 301, and the assembly is extremely convenient and simple.

In the sixth step, the welding end 202 of the copper wire segment 20 is bent by an automatic bending machine, so that automatic bending is realized, and the working efficiency is extremely high. In other words, the invention is convenient for realizing automatic bending production after a plurality of copper wire segments are positioned through the chain belt 3 to form a chain belt type copper wire segment assembly.

In summary, the manufacturing process of the central needle for the connector adopts the copper wire, the copper wire section formed after cutting the copper wire is clamped into the positioning clamping groove 30 of the chain belt 3, and then various processing is carried out on the copper wire section, and as the outer diameter size of the selected copper wire section 20 is the same as the outer diameter size of the central needle 200 which is preformed, the two ends of the copper wire section are only required to be subjected to cyclone milling processing in the later stage, and the whole copper wire section is not required to be subjected to milling processing, compared with lathe processing, the invention has little waste formed after processing the copper wire end, and can effectively save the material cost; because the chain belt 3 is adopted to clamp and fix a plurality of copper wire segments at the same time to form a chain belt type copper wire segment assembly, but not a copper wire segment part, the invention has larger volume, is convenient for transmission, is particularly convenient for realizing continuous electroplating in later period, can realize different plating types for different functional areas of the copper wire segment, only needs to select gold plating specifications for the contact end, does not need gold plating for other areas, and can greatly reduce the electroplating cost. Meanwhile, the automatic machine on the copper wire section assembly of the chain belt type is convenient to bend and weld the end, the degree of automation is higher, and the working efficiency is higher. And this chain belt formula copper line section subassembly is convenient for adopt whirlwind milling cutter to process and form contact end 201 and welding end 202 to copper line section 20 both ends, and its processing operation is simpler and more simple, and efficiency is higher.

Embodiment two:

referring to fig. 4-10, the present invention is a process for manufacturing a center pin for a connector, comprising the steps of:

the first step: continuously feeding the copper wire 2 and cutting the copper wire according to the length to form a copper wire segment 20, wherein the outer diameter size of the copper wire segment 20 is the same as the outer diameter size of the preformed center pin 200; sequentially clamping the copper wire sections 20 into the positioning clamping grooves 30 of the chain belt 3 one by one until all the positioning clamping grooves 30 of the chain belt 3 position one copper wire section 20, so that a plurality of copper wire sections 20 distributed at intervals are positioned on the chain belt 3 to form a chain belt type copper wire section assembly; wherein, two ends of the copper wire section 20 respectively protrude out of two sides of the chain belt 3;

and a second step of: punching all copper wire segments 20 of the chain belt 3 to form outwards protruding clamping pins 201, wherein the clamping pins 201 are used for clamping and positioning when the central pin 200 is assembled to form a connector;

and a third step of: conveying the copper wire segment assembly to an automaton, and chamfering one end of the copper wire segment 20 by a whirling cutter to form a welding end 202, so as to later manufacture a center pin forming a first structure, or machining one end of the copper wire segment 20 by the whirling cutter to form an elongated welding end 202 with a reduced size; the other end of the copper wire section 20 is processed by a cyclone milling cutter to form an elongated contact end 203 with a reduced size so as to later manufacture a center pin with a second structure;

fourth step: continuously electroplating a plurality of copper wire sections 20 in the copper wire section assembly, wherein nickel plating is carried out on other parts of the copper wire sections 20 except the welding end 202 and the contact end 203, gold plating is carried out on the outer surface of the contact end 203, and tin plating is carried out on the outer surface of the welding end 202;

fifth step: simultaneously bending the welding ends 202 of the plurality of copper wire segments 20 in the copper wire segment assembly at one time to form a plurality of center pins 200; alternatively, the welding ends 202 of the plurality of copper wire segments 20 in the copper wire segment assembly are bent a plurality of times, each time bending the welding ends 202 of one copper wire segment 20, to form a plurality of center pins 200;

sixth step: the plurality of center pins 200 are detached from the chain belt 3, thereby completing the production.

The manufacturing process of the central needle for the connector adopts copper wires, copper wire sections formed after copper wires are cut are directly clamped into the positioning clamping grooves 30 of the chain belt 3 one by one, and after a chain belt type copper wire section assembly is formed, various processing is carried out on the copper wire sections, so that the efficiency is higher. In addition, the outer diameter of the selected copper wire section 20 is the same as that of the preformed center pin 200, and the two ends of the copper wire section are only required to be subjected to cyclone milling in the later stage, so that the whole copper wire section is not required to be subjected to milling, and compared with lathe processing, the method has the advantages that the waste formed after the copper wire end is processed is very little, and the material cost can be effectively saved; because the chain belt 3 is adopted to clamp and fix a plurality of copper wire segments at the same time to form a chain belt type copper wire segment assembly, but not a copper wire segment part, the invention has larger volume, is convenient for transmission, is particularly convenient for realizing continuous electroplating in later period, can realize different plating types for different functional areas of the copper wire segment, only needs to select gold plating specifications for the contact end, does not need gold plating for other areas, and can greatly reduce the electroplating cost. Meanwhile, the automatic machine on the copper wire section assembly of the chain belt type is convenient to bend and weld the end, the degree of automation is higher, and the working efficiency is higher. And this chain belt formula copper line section subassembly is convenient for adopt whirlwind milling cutter to process and form contact end 201 and welding end 202 to copper line section 20 both ends, and its processing operation is simpler and more simple, and efficiency is higher.

In the third step, one end of each copper wire segment 20 is sequentially processed by a cyclone milling cutter to form the welding end 202, and then the other end of each copper wire segment 20 is sequentially processed by a cyclone milling cutter to form the contact end 203, as shown in fig. 6; alternatively, the welding ends 202 are formed by machining one end of all the copper wire segments 20 with a plurality of whirling cutters, and then the contact ends 203 are formed by machining the other end of all the copper wire segments 20 with a plurality of whirling cutters, as shown in fig. 7; alternatively, the welding ends 202 are formed by sequentially machining one end of each copper wire segment 20 by using a cyclone milling cutter, and the contact ends 203 are formed by sequentially machining the other end of each copper wire segment 20 by using a cyclone milling cutter, so that the machining efficiency is extremely high as shown in fig. 8; alternatively, the welding ends 202 are formed by machining one end of all the copper wire segments 20 with a plurality of whirling cutters, and the contact ends 203 are formed by machining the other end of all the copper wire segments 20 with a plurality of whirling cutters, which is extremely high in machining efficiency, as shown in fig. 9. That is, in the third step, any one of the above-mentioned whirling milling methods may be used to perform the processing to meet different use requirements.

In the fifth step, the welding end 202 of the copper wire segment 20 is bent by an automatic bending machine, so that automatic bending is realized, and the working efficiency is extremely high. In other words, the invention is convenient for realizing automatic bending production after a plurality of copper wire segments are positioned through the chain belt 3 to form a chain belt type copper wire segment assembly.

In summary, the manufacturing process of the central needle for the connector of the present invention adopts copper wires, the copper wire sections formed after cutting copper wires are directly clamped into the positioning clamping groove 30 of the chain belt 3 one by one, and various processing is performed on the copper wire sections after forming the chain belt type copper wire section assembly, so that the efficiency is higher. In addition, the outer diameter of the selected copper wire section 20 is the same as that of the preformed center pin 200, and the two ends of the copper wire section are only required to be subjected to cyclone milling in the later stage, so that the whole copper wire section is not required to be subjected to milling, and compared with lathe processing, the method has the advantages that the waste formed after the copper wire end is processed is very little, and the material cost can be effectively saved; because the chain belt 3 is adopted to clamp and fix a plurality of copper wire segments at the same time to form a chain belt type copper wire segment assembly, but not a copper wire segment part, the invention has larger volume, is convenient for transmission, is particularly convenient for realizing continuous electroplating in later period, can realize different plating types for different functional areas of the copper wire segment, only needs to select gold plating specifications for the contact end, does not need gold plating for other areas, and can greatly reduce the electroplating cost. Meanwhile, the automatic machine on the copper wire section assembly of the chain belt type is convenient to bend and weld the end, the degree of automation is higher, and the working efficiency is higher. And this chain belt formula copper line section subassembly is convenient for adopt whirlwind milling cutter to process and form contact end 201 and welding end 202 to copper line section 20 both ends, and its processing operation is simpler and more simple, and efficiency is higher.

It is understood that the foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, but rather is to be accorded the full scope of all such modifications and equivalent structures, features and principles as set forth herein.

Claims

1. The manufacturing process of the central needle for the connector is characterized by comprising the following steps of: which comprises the following steps:

the first step: continuously feeding copper wires (2) and cutting according to the length to form copper wire sections (20), wherein the outer diameter size of the copper wire sections (20) is the same as the outer diameter size of a preformed central needle; then the copper wire section (20) is clamped into the positioning clamping groove (30) of the chain belt (3), so that the copper wire section (20) is fixed on the chain belt (3), wherein the two ends of the copper wire section (20) respectively protrude out of the two sides of the chain belt (3),

and a second step of: punching and forming outwards protruding bayonet (201) on the copper wire section (20) of the chain belt (3);

and a third step of: the first step and the second step are repeated continuously until all the positioning clamping grooves (30) of the chain belt (3) are positioned with one copper wire section (20), so that the chain belt (3) is positioned with a plurality of copper wire sections (20) distributed at intervals to form a chain belt type copper wire section assembly;

fourth step: conveying the copper wire segment assembly to an automaton, and chamfering one end of the copper wire segment (20) by a whirling cutter to form a welded end (202), or alternatively, machining one end of the copper wire segment (20) by a whirling cutter to form an elongated welded end (202) of reduced size; then the other end of the copper wire section (20) is processed by a cyclone milling cutter to form an elongated contact end (203) with a reduced size;

fifth step: continuously electroplating a plurality of copper wire sections (20) in the copper wire section assembly, wherein nickel plating is carried out on other parts of the copper wire sections (20) except for a welding end (202) and a contact end (203), the outer surface of the contact end (203) is plated with gold, and the outer surface of the welding end (202) is plated with tin;

sixth step: simultaneously bending welding ends (202) of a plurality of copper wire sections (20) in the copper wire section assembly at one time to form a plurality of center pins; or, bending the welding ends (202) of a plurality of copper wire sections (20) in the copper wire section assembly for a plurality of times, and bending the welding ends (202) of one copper wire section (20) at a time to form a plurality of center pins;

seventh step: and (5) detaching the plurality of center pins relative to the chain belt (3) to finish manufacturing.

2. The process for manufacturing a center pin for a connector according to claim 1, wherein: in the fourth step, one end of each copper wire segment (20) is sequentially processed by adopting a cyclone milling cutter to form the welding end (202), and then the other end of each copper wire segment (20) is sequentially processed by adopting a cyclone milling cutter to form the contact end (203); or, a plurality of whirling cutters are adopted to process one end of all the copper wire segments (20) at a time to form the welding end (202), and then a plurality of whirling cutters are adopted to process the other end of all the copper wire segments (20) at a time to form the contact end (203); or, sequentially machining one end of each copper wire segment (20) by adopting a cyclone milling cutter to form the welding end (202), and sequentially machining the other end of each copper wire segment (20) by adopting a cyclone milling cutter to form the contact end (203); or, the welding ends (202) are formed by machining one end of all the copper wire segments (20) at a time by adopting a plurality of cyclone milling cutters, and the contact ends (203) are formed by machining the other end of all the copper wire segments (20) at a time by adopting a plurality of cyclone milling cutters.

3. The process for manufacturing a center pin for a connector according to claim 1, wherein: the chain belt (3) comprises a base plate (31), a first side plate (32) and a second side plate (34) which are formed on two sides of the base plate (31) in a bending mode, a plurality of positioning clamping grooves (30) which are in one-to-one correspondence are formed in the first side plate (32) and the second side plate (34), and a plurality of positioning holes (311) are formed in the base plate (31).

4. A process for manufacturing a center pin for a connector according to claim 3, wherein: guide inclined planes (301) are arranged on two sides of an opening at the upper end of the positioning clamping groove (30), and the two guide inclined planes (301) are distributed in an inverted splayed shape.

5. The process for manufacturing a center pin for a connector according to any one of claims 1 to 4, wherein: in the sixth step, the welding end (202) of the copper wire segment (20) is bent using an automatic bending machine.

6. The manufacturing process of the central needle for the connector is characterized by comprising the following steps of: which comprises the following steps:

the first step: continuously feeding copper wires (2) and cutting according to the length to form copper wire sections (20), wherein the outer diameter size of the copper wire sections (20) is the same as the outer diameter size of a preformed central needle; sequentially clamping the copper wire segments (20) into the positioning clamping grooves (30) of the chain belt (3) one by one until all the positioning clamping grooves (30) of the chain belt (3) are positioned with one copper wire segment (20), so that a plurality of copper wire segments (20) distributed at intervals are positioned on the chain belt (3) to form a chain belt type copper wire segment assembly; wherein, two ends of the copper wire section (20) respectively protrude out of two sides of the chain belt (3);

and a second step of: punching all copper wire sections (20) of the chain belt (3) to form outwards protruding bayonet (201);

and a third step of: conveying the copper wire segment assembly to an automaton, and chamfering one end of the copper wire segment (20) by a whirling cutter to form a welded end (202), or alternatively, machining one end of the copper wire segment (20) by a whirling cutter to form an elongated welded end (202) of reduced size; then the other end of the copper wire section (20) is processed by a cyclone milling cutter to form an elongated contact end (203) with a reduced size;

fourth step: continuously electroplating a plurality of copper wire sections (20) in the copper wire section assembly, wherein nickel plating is carried out on other parts of the copper wire sections (20) except for a welding end (202) and a contact end (203), the outer surface of the contact end (203) is plated with gold, and the outer surface of the welding end (202) is plated with tin;

fifth step: simultaneously bending welding ends (202) of a plurality of copper wire sections (20) in the copper wire section assembly at one time to form a plurality of center pins; or, bending the welding ends (202) of a plurality of copper wire sections (20) in the copper wire section assembly for a plurality of times, and bending the welding ends (202) of one copper wire section (20) at a time to form a plurality of center pins;

sixth step: and (5) detaching the plurality of center pins relative to the chain belt (3) to finish manufacturing.

7. The process for manufacturing a center pin for a connector according to claim 6, wherein: in the third step, one end of each copper wire segment (20) is sequentially processed by adopting a cyclone milling cutter to form the welding end (202), and then the other end of each copper wire segment (20) is sequentially processed by adopting a cyclone milling cutter to form the contact end (203); or, a plurality of whirling cutters are adopted to process one end of all the copper wire segments (20) at a time to form the welding end (202), and then a plurality of whirling cutters are adopted to process the other end of all the copper wire segments (20) at a time to form the contact end (203); or, sequentially machining one end of each copper wire segment (20) by adopting a cyclone milling cutter to form the welding end (202), and sequentially machining the other end of each copper wire segment (20) by adopting a cyclone milling cutter to form the contact end (203); or, the welding ends (202) are formed by machining one end of all the copper wire segments (20) at a time by adopting a plurality of cyclone milling cutters, and the contact ends (203) are formed by machining the other end of all the copper wire segments (20) at a time by adopting a plurality of cyclone milling cutters.

8. The process for manufacturing a center pin for a connector according to claim 6, wherein: the chain belt (3) comprises a base plate (31), a first side plate (32) and a second side plate (34) which are formed on two sides of the base plate (31) in a bending mode, a plurality of positioning clamping grooves (30) which are in one-to-one correspondence are formed in the first side plate (32) and the second side plate (34), and a plurality of positioning holes (311) are formed in the base plate (31).

9. The process for manufacturing a center pin for a connector according to claim 8, wherein: guide inclined planes (301) are arranged on two sides of an opening at the upper end of the positioning clamping groove (30), and the two guide inclined planes (301) are distributed in an inverted splayed shape.

10. The process for manufacturing a center pin for a connector according to any one of claims 6 to 9, wherein: in a fifth step, the welding ends (202) of the copper wire segments (20) are bent using an automatic bending machine.