CN106654798B - A kind of preparation method of reducing cylindrical pin - Google Patents
A kind of preparation method of reducing cylindrical pin Download PDFInfo
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- CN106654798B CN106654798B CN201611196225.4A CN201611196225A CN106654798B CN 106654798 B CN106654798 B CN 106654798B CN 201611196225 A CN201611196225 A CN 201611196225A CN 106654798 B CN106654798 B CN 106654798B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 238000000137 annealing Methods 0.000 claims abstract description 24
- 238000009413 insulation Methods 0.000 claims abstract description 18
- 238000004080 punching Methods 0.000 claims description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 17
- 229910052802 copper Inorganic materials 0.000 claims description 17
- 239000010949 copper Substances 0.000 claims description 17
- 230000009471 action Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 24
- 239000004033 plastic Substances 0.000 abstract description 4
- 229920003023 plastic Polymers 0.000 abstract description 4
- 238000012669 compression test Methods 0.000 abstract description 3
- 239000011265 semifinished product Substances 0.000 description 25
- 238000000034 method Methods 0.000 description 10
- 239000000047 product Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 5
- 239000003292 glue Substances 0.000 description 5
- 238000001746 injection moulding Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 206010014357 Electric shock Diseases 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Abstract
A kind of preparation method of reducing cylindrical pin, includes the following steps：A, pin precast body is prepared：A kind of pin precast body is provided, the pin precast body is a hollow tubular, and one end is closed, and definition is conductive part close to closed one section, and remainder is first Ministry of worker to be added；B, undergauge is squeezed：First Ministry of worker's continuous several times to be added are squeezed into undergauge, form insulate encapsulated portion and second Ministry of worker to be added, the encapsulated portion of insulation is between conductive part and second Ministry of worker to be added；C, reducing makes annealing treatment：Described second Ministry of worker to be added is subjected to reducing annealing, obtains wire connecting portion.Its encapsulated portion's hardness that insulate of the reducing cylindrical pin that the present invention is prepared is high, has good bend resistance degree, can meet the requirement of corresponding compression test and roller fall-down test；And the encapsulated portion of the insulation surface and edge it is more smooth so that be subsequently molded obtained product its plastics saturation degree and make, and then meet standard requirement of the countries in the world to attaching plug holder.
Description
Technical field
The invention belongs to plug pin technical fields, and in particular to a kind of preparation method of reducing cylindrical pin.
Background technology
Our times various countries are just generally using the reducing cylindrical pin of a kind of local dielectric, are wrapped on such plug base pin
The insulator wrapped up in largely reduces electric shock risk, therefore by wide popularization and application.Such plug base pin generally use
Processing method made of solid core pole vehicle system, waste of material rate is high, and low production efficiency is of high cost, while lead content is exceeded, reaches
Less than European Union environmental protection requirement；In addition also there is the system of the cylinder type contact pin for electrical connection disclosed in the patent application of China's Mainland
Make method, is that hollow is made using continuous punching stretch technology is seamless specifically wherein application No. is 2008100628509
Cylindrical tube (this step is exactly that copper sheet is first made a copper pipe), undergauge annealing operation, system are squeezed using high speed rotary grinding
At bottleneck position (this step is exactly that tail portion is formed neck by rotating necking down), bottleneck position is because passing through above-mentioned annealing process
(because neck is obtained by annealing, hardness is relatively low), causes metal hardness to reduce, causes mechanical strength that safety is not achieved
Test request, while spin friction increases the degree of roughness of metal tube surface, causes injecting glue unsmooth in injection molding process
Influence.So that the reducing cylindrical pin being prepared can not meet standard requirement of the countries in the world to attaching plug holder.
Invention content
The purpose of the present invention is to provide a kind of hardness in the encapsulated portion of insulation proposed for solving above-mentioned technical problem
The better reducing cylindrical pin of higher, performance.
The preparation method of reducing cylindrical pin provided by the present invention, includes the following steps：
A, pin precast body is prepared：There is provided a kind of pin precast body, the pin precast body is a hollow tubular, and one end
Closing, definition are conductive part close to closed one section, and remainder is first Ministry of worker to be added；
B, undergauge is squeezed：First Ministry of worker's continuous several times to be added are squeezed into undergauge, form the encapsulated portion and second to be processed of insulating
Portion, the encapsulated portion of insulation is between conductive part and second Ministry of worker to be added；
C, reducing makes annealing treatment：Described second Ministry of worker to be added is subjected to reducing annealing, obtains wire connecting portion.
As the preferred embodiment of the present invention, the pin precast body for preparing carries out continuous several times punching stretch by copper strips, so
Tail portion cuts flat with to obtain afterwards.
As the preferred embodiment of the present invention, the extruding undergauge is in a manner of continuous several times punching press to first Ministry of worker to be added
Undergauge acts on.
As the preferred embodiment of the present invention, reducing annealing is to be added to the second of driving rotation with draw pullover
Ministry of worker's squeezing action.
As the preferred embodiment of the present invention, the pin precast body is a hollow copper tubing.
As the preferred embodiment of the present invention, further comprise step d：The opening of wire connecting portion is carried out reaming by reaming flange
Flange
As the preferred embodiment of the present invention, the reaming flange is made to the wire connecting portion opening top pressure of driving rotation with thimble
With.
Due to the application of above-mentioned technical proposal, the invention has the advantages that：
The preparation method of the reducing cylindrical pin of the present invention prepares reducing cylinder by way of squeezing undergauge
The encapsulated portion of insulation in pin, this mode that middle reducing makes annealing treatment compared with prior art, the hardness higher in encapsulated portion of insulating,
With good bend resistance degree, the requirement of corresponding compression test and roller fall-down test can be met in this way；And the insulating bag
The surface and edge in glue portion are more smooth so that are subsequently molded obtained product its plastics saturation degree and make, and then meet the world
Standard requirement of the various countries to attaching plug holder.
Description of the drawings
Fig. 1 is the structural schematic diagram of reducing cylindrical pin provided by the present invention, wherein the reducing cylindrical pin
The outer diameter of wire connecting portion is less than the encapsulated portion's outer diameter that insulate.
Fig. 2 is the structural schematic diagram for inventing provided reducing cylindrical pin, and the wherein reducing cylindrical pin connects
The outer diameter in line portion is more than the encapsulated portion's outer diameter that insulate.
Fig. 3 is the mechanical structure schematic diagram that reducing annealing is corresponding in the present invention.
Fig. 4 is the process flow chart of the preparation method of reducing cylindrical pin provided by the present invention.
Fig. 5 is the technological process for the reducing cylindrical pin that the European two round plug standards of 2.5A are used to prepare in the present invention
Figure.
Fig. 6 is that the middle section surface of product prepared by the prior art products measured using Image detection technology and the present invention is thick
Rugosity comparison diagram.
Fig. 7 is that digital display pressure gauge uses R1 pressure heads respectively to the encapsulated position of insulation of the old and new's technique and the pressure at wiring position
Test data.
Fig. 8 is that digital display pressure gauge uses the pressure test of R1 pressure heads to the test data of sample pin.
Fig. 9 is that digital display pressure gauge uses the pressure test of R2 pressure heads to the test data of sample pin.
Figure 10 is that digital display pressure gauge uses the pressure test of R3 pressure heads to the test data of sample pin.
Figure 11 is that digital display pressure gauge uses the pressure test of R4 pressure heads to the test data of sample pin.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
It please referring to Fig.1, Fig. 2, reducing cylindrical pin 100 provided by the present invention can be used for preparing attaching plug holder,
Belong to the basic device in attaching plug.In general, the reducing cylindrical pin 100 be by conductive excellent copper at.
The reducing cylindrical pin 100 includes conductive part 11, the encapsulated portion 12 of insulation and wiring successively from end to tail portion
Portion 13.The end or conductive part 11 are used to be electrically connected with external power output such as socket, plate etc..The insulation
Encapsulated portion 12 for being connected and fixed with attaching plug holder, the wire connecting portion 13 with and the electric wire that connect of attaching plug holder be electrically connected
It connects.The reducing cylindrical pin 100 is hollow tubular structure, at this point, the front end of its conductive part 11 is spherical surface body, the conduction
Portion 11 is arranged in one end far from wire connecting portion 13 for spherical surface body, the as blind end of hollow tubular structure.The attaching plug
The electric wire of holder connection is plugged in the wire connecting portion 13.
Between the conductive part 11 and the encapsulated portion 12 of insulating, and the encapsulated portion 12 of insulation and wire connecting portion 13 each personal step into
Row transition.Wherein, the outer diameter of the wire connecting portion 13 is less than or greater than the outer diameter in the encapsulated portion 12 of insulating, that is, the insulating bag
Step is formed between glue portion 12 and wire connecting portion 13, it is in the present embodiment, described to connect for ease of processing and mechanical property being made to consider
The outer diameter in line portion 13 is preferentially less than the outer diameter in the encapsulated portion 12 of insulating, it is preferable that outer diameter difference between the two is greater than
In 0.05 millimeter.Preferably, the outer diameter in the encapsulated portion 12 of insulating is less than the outer diameter of the conductive part 11, is more than the wire connecting portion
13 outer diameter, and the internal diameter in the encapsulated portion 12 of insulating is more than the internal diameter of the wire connecting portion 13, is less than the interior of the conductive part 11
Diameter.
It is plugged for ease of the electric wire, the wire connecting portion 13 in reducing cylindrical pin 100 disclosed in the present embodiment is remote
One end open from encapsulated portion 12 of insulating is provided with flange 14, and the flange 14 is specifically configured to horn-like structure, Yi Jiben
Embodiment expands the opening of wire connecting portion 13 by the structure setting of flange 14, and external cable is inserted into wire connecting portion 13 in this way
And realize being conductively connected between the reducing cylindrical pin 100, also that is, being convenient for the preparation of attaching plug holder in this way.
In this way it is understood that the claimed reducing cylindrical pin 100 of the present embodiment, by will insulate encapsulated portion 12 with
The step formed between wire connecting portion 13 has been convenient for the reducing cylindrical pin 100 when preparing plug-in power pack holder to insulating bag
The injection molding in glue portion 12 is encapsulated；And be prepared attaching plug holder when, when conductive part 11 is by external force collision, insulating bag
Step between glue portion 12 and wire connecting portion 13 can play the role of positioning buffering, and then raising injection molding is encapsulated and reducing cylinder is inserted
Pulling-out force between foot 100, it is therefore prevented that injection molding is encapsulated in the insulated plastic rupture in encapsulated portion 12 of insulating.
Fig. 3, Fig. 4 are please referred to, the preparation process of the reducing cylindrical pin 100 is also claimed in the present invention, specifically,
Include the following steps：
A, pin precast body is prepared：There is provided a kind of pin precast body, the pin precast body is a hollow tubular, and one end
Closing, definition are conductive part 11 close to closed one section, and remainder is first Ministry of worker to be added；
B, undergauge is squeezed：First Ministry of worker's continuous several times to be added are squeezed into undergauge, it is to be added to form encapsulated portion 12 and second of insulating
The Ministry of worker, the encapsulated portion 12 of insulation is between conductive part 11 and second Ministry of worker to be added；
C, reducing makes annealing treatment：Described second Ministry of worker to be added is subjected to reducing annealing, obtains wire connecting portion 13.
From the foregoing, it will be observed that the encapsulated portion 12 of insulation in the claimed reducing cylindrical pin of the present embodiment 100 be specifically with
Made of the mode for squeezing undergauge, press machine specifically may be used, cold beat machine, injection molding machine, hydraulic press or test machine pair first
Ministry of worker's continuous several times to be added squeeze undergauge, this makes annealing treatment what mode was prepared compared to reason using reducing, maximum
Difference is to carry out extruding undergauge on the basis of keeping first Ministry of worker's temperature to be added to be not enough to form reducing annealing and formed
's.The hardness that can obtain the encapsulated portion 12 of insulating in the reducing cylindrical pin 100 in this way is higher, and encapsulated 12 surface of portion of insulating
And edge is more smooth；And the wire connecting portion 13 in the reducing cylindrical pin 100 is specifically to be carried out in such a way that reducing makes annealing treatment
It is prepared, hardness is smaller, and specifically, the hardness in encapsulated portion 12 of insulating is more than the conductive part 11 and wire connecting portion 13
Hardness.In this way in the attaching plug holder being prepared with the reducing cylindrical pin 100 of the present invention, encapsulated portion 12 of insulating
Hardness is high, has good bend resistance degree, can meet the requirement of corresponding compression test and roller fall-down test in this way, specifically
It can bear the pressure of 60KG forcing presses；And the encapsulated portion of the insulation surface and edge it is more smooth so that be subsequently molded encapsulated obtain
Product its be molded encapsulated saturation degree and make, and then meet standard requirement of the countries in the world to attaching plug holder.
It is appreciated that according to the design feature of its required reducing cylindrical pin 100 to be prepared, which is
Hollow reducing cylindrical pin 100 can accordingly be prepared i.e. by above step for hollow copper tubing.
Wherein, the specific available copper band of the pin precast body of the present embodiment is prepared.Specifically, the first step, sorting：It chooses
Copper strips is placed on feed appliance；Second step, punching stretch：Selected copper strips is sent to mold and carried out continuous more by feed appliance
Secondary punching stretch, and obtain cylindrical pin precast body；Third walks, and tail portion is cut flat with：By the tail portion of obtained pin precast body
It is cut flat with, and finally obtains the pin precast body for meeting length requirement.It is appreciated that carrying out continuous punching press drawing to copper strips
During stretching, requirement is had the dimensions per punching stretch together, is met the size requirements with being finally prepared
Pin precast body.
In the present embodiment, the reducing annealing is specifically to be realized by the way of friction and Extrusion, specifically
Conductive part 11 is laterally disposed in automatic lathe collet 21 by ground, and is driven by automatic lathe collet 21 so that its high speed rotation,
Then by draw pullover 22 that is being arranged with second Ministry of worker's concentric shafts to be added and can sliding laterally come to second Ministry of worker to be added
Opening portion carries out friction and Extrusion.It is appreciated that draw pullover 22 is laterally retracted to second Ministry of worker to be added and with high-speed rotating the
Two Ministry of worker to be added are in contact, and the contact surface of the two is because occurring relative motion due to frictional heating, and second Ministry of worker to be added is in draw set
First 22 further retractions to squeeze second Ministry of worker to be added, and finally obtain outer diameter and are less than encapsulated 12 outer diameter of portion that insulate
Wire connecting portion 13.It should be noted that when the outer diameter for needing reducing cylindrical pin to be prepared to require its wire connecting portion 13 is more than institute
When stating the outer diameter in encapsulated portion 12 of insulating, draw pullover 22 can be replaced with contact pin, and adopt in a like fashion, contact pin is laterally stretched
Enter to the opening portion of second Ministry of worker to be added and is in contact with high-speed rotating second Ministry of worker to be added to realize.It is appreciated that having
During body carries out reducing annealing, transverse shifting of the draw pullover 22 relative to high-speed rotating second Ministry of worker to be added
And it carries out friction and Extrusion back and forth several times, and the wire connecting portion 13 met the size requirements can be finally obtained.
Further, in order to obtain in the present embodiment reducing cylindrical pin 100 14 structure of flange, it is prepared by the present invention
During, also include reaming flange the step for, specifically with thimble be inserted into wire connecting portion 13 opening endoporus.Specifically
Ground, it is similar with the mode of above-mentioned reducing annealing, conductive part 11 is laterally disposed in automatic lathe collet 21, and by automatic lathe
Collet 21 is driven so that its high speed rotation, is then inserted into using the thimble of cone simultaneously high by the clamping of automatic lathe collet 21
The opening endoporus of the wire connecting portion 11 of speed rotation driving.It is appreciated that opening of the above-mentioned thimble to high-speed rotating wire connecting portion 13
Carry out the effect of continuous reaming flange, can also several subjobs back and forth, to reach the flange 14 finally met the size requirements.
The preparation method of the reducing cylindrical pin of the present invention prepares reducing cylinder by way of squeezing undergauge
The encapsulated portion of insulation in pin, this mode that middle reducing makes annealing treatment compared with prior art, the hardness higher in encapsulated portion of insulating,
During experiment, the pressure of 60KG forcing presses can be specifically born, and the surface in the encapsulated portion of the insulation and edge are more smooth, make
Product its plastics saturation degree that subsequently be molded is made, and then meet countries in the world and the standard of attaching plug holder wanted
It asks.
Referring to Fig. 5, meeting the reducing cylindrical pin 100 of the European two round plug standards of 2.5A with regard to preparing below, does and have
The description introduction of body：
The sorting of step A, in 40~46mm, thickness and places it in specific width of choosing in the copper strips of 0.4~0.6mm
On feed appliance.
The punching stretch of step B, be for carrying out continuous six punching stretch to the copper strips chosen via step A, and
Form pin semi-finished product A, it will be understood that its outer diameter of pin semi-finished product A formed via step B punching stretch is in pin ontology
The outer diameter of conductive part 11.Specifically：For copper strips to be first washed into a diameter of 16~24mm circular blank, then first is
The cylindrical workpiece that punching stretch is 6~8mm at a diameter of 11~13mm, highly, second are for punching stretch into diameter
The cylindrical workpiece for being for 8~11mm, highly 10~12.5mm；Third road is punching stretch into a diameter of 6~8.5mm, height
For the cylindrical workpiece of 14.5~16.0mm；4th is the circle that punching stretch is 18~21mm at a diameter of 5~7mm, highly
Cylindrical work pieces；5th is the cylindrical workpiece that punching stretch is 23~26mm at a diameter of 4~6mm, highly；6th is punching
Pressure is drawn into a diameter of 3.94~4.06mm, is highly the cylindrical workpiece of 35.0~36.0mm, in this way six by way of step B
Punching stretch has just obtained final pin semi-finished product A, a diameter of 3.94~4.06mm, has highly been 35.0~36.0mm.Its
In, it is transmitted with manipulator between per pass punching stretch.
The tail portion of step C is cut flat with, and is particularly used for cutting flat with the tail portion of pin semi-finished product A, and obtain pin half at
Product B, specifically, a diameter of 3.94~4.06mm of finally obtained pin semi-finished product B, be highly 28.0~30.0mm cylinder
Shape copper pipe.
The extruding undergauge of step D is to carry out undergauge to one section of pin semi-finished product B adjacent openings, particular by continuous
The modes of three punching press undergauges realize and formed pin semi-finished product C.Specifically, it is for first for by pin semi-finished product B
Upper opening portion carry out undergauge, the position diameter of top 20mm length is narrowed down into 3.5mm, at the same time, pin semi-finished product B
Overall length become 30.8mm；Second is for the upper opening portion of pin semi-finished product B to be carried out undergauge again, by top 21.5mm long
The position diameter of degree narrows down to 3.1mm, and at the same time, the overall length of pin semi-finished product B becomes 32.0mm；Third road is for that will insert
The upper opening portion of foot semi-finished product B carries out undergauge again, and the position diameter of top 22.5mm length is narrowed down to 2.73mm, same with this
When, the overall length of pin semi-finished product B becomes 33.0mm, and finally obtains pin semi-finished product C.
The reducing of step E makes annealing treatment：It is one section of progress reducing annealing to pin semi-finished product C adjacent openings, and
Obtain pin semi-finished product D.Specifically, pin semi-finished product C is laterally first folded in automatic lathe collet, and by automatic lathe collet
It is driven so that its high speed rotation, then passes through draw set that is being arranged with pin semi-finished product C concentric shafts and can sliding laterally
Head to carry out friction and Extrusion, specific continuous friction and Extrusion three times, to realize to pin half to the opening portion of pin semi-finished product C
The crowded compressed shape of the opening portions finished product C, wherein it is 6mm to squeeze depth, and the diameter of extruded parts is narrowed down to from 2.73mm
2.6mm, and form pin semi-finished product D；It is appreciated that after high-speed rotating pin half is contacted at C with draw pullover, connect
Contact portion can make its softening because of frictional heat, then can reach contracting shape most under the hard squeeze of draw pullover transverse shifting
Whole purpose, and obtain pin semi-finished product D.
The reaming flange of step F：It is the opening endoporus that pin semi-finished product D is inserted into thimble, to open pin semi-finished product D
Mouth end carries out reaming flange, and obtains final pin ontology.Specifically it is inserted by automatic lathe using the thimble of cone
The opening endoporus of grips and the pin semi-finished product D of high speed rotation driving, it is specific continuously interact three times, specifically may be used
Thimble is exited again to work as after its flange reaches defined size, and the open end of pin semi-finished product D is made to reach the work of reaming flange
With finally obtained our required pin ontologies, that is, obtain reducing cylindrical pin 100.
It is appreciated that preparation method more than prepares reducing cylindrical pin 100, only need to adjust each step
Corresponding site of action and the size quantity of required adjusting in rapid, you can the reducing that different size is prepared is cylindrical
Pin 100, to meet different use demands, just differ one has been illustrated herein.
Fig. 6 is the roughness comparison that image test product stage casing is carried out using VMA3020 manual image measuring instruments, Ke Yifei
Often significantly find out, the middle part surface and edge for the product that preparation method using the present invention obtains are more smooth.
Since the hardness test difficulty of hollow copper rod is larger, it is difficult to verify.So those skilled in the art is recommended to use " pressure instead
The hardness in stage casing (the encapsulated portion of insulating) and endpiece (wire connecting portion) of the method for power test " contrast verification pin.When test, use：
Pressure head (such as R1=of digital display pressure gauge (pressure that test pushes), displacement meter (shift value that record pushes) and different radii
1mm, R2=2mm, R3=3mm, R4=4mm) it is tested.The contact pin of different size when test, passes through different depression depths
And different pressure heads, test comparison pressure value.
If Fig. 7 is digital display pressure gauge (pressure that test pushes), displacement meter (shift value that record pushes) and R1 pressure heads
Respectively to the encapsulated position of insulation of the old and new's technique and the pressure test comparison diagram at wiring position, it can be seen that the insulation of new process
The hardness at encapsulated position and wiring position is all higher than the encapsulated position of insulation and the hardness at wiring position of old technique, and new process
Insulate encapsulated position hardness be more than wiring position hardness.
If Fig. 8,9,10,11 are respectively to use R1, R2, R3, R4 pressure head to Φ 4.0 (contact pin size) * 10.7 (head lengths
Degree) * 2.7 (stage casing diameter) contact pins test data.From the figures above as can be seen that under identical depression depths, apply sample
The pressure in stage casing (encapsulated portion of insulating) is consistently greater than the pressure of sample endpiece (wire connecting portion), the i.e. stage casing (encapsulated portion of insulating) of sample
Hardness be more than sample endpiece (wire connecting portion) hardness.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (7)
1. a kind of preparation method of reducing cylindrical pin, which is characterized in that include the following steps：
A, pin precast body is prepared：There is provided a kind of pin precast body, the pin precast body is a hollow tubular, and an end seal
It closes, definition is conductive part close to closed one section, and remainder is first Ministry of worker to be added；
B, undergauge is squeezed：First Ministry of worker's continuous several times to be added are squeezed into undergauge, form insulate encapsulated portion and second Ministry of worker to be added, institute
The encapsulated portion of insulation is stated between conductive part and second Ministry of worker to be added；
C, reducing makes annealing treatment：Described second Ministry of worker to be added is subjected to reducing annealing, obtains wire connecting portion.
2. the preparation method of reducing cylindrical pin according to claim 1, which is characterized in that described to prepare pin prefabricated
Body carries out continuous several times punching stretch forming by copper strips, and then tail portion cuts flat with to obtain.
3. the preparation method of reducing cylindrical pin according to claim 1, it is characterised in that：The extruding undergauge be with
First Ministry of worker's undergauge to be added of mode pair of continuous several times punching press acts on.
4. the preparation method of reducing cylindrical pin according to claim 1, which is characterized in that the reducing annealing
It is second Ministry of worker's squeezing action to be added with draw pullover to driving rotation.
5. the preparation method of reducing cylindrical pin according to claim 1, which is characterized in that the pin precast body is
One hollow copper tubing.
6. the preparation method of reducing cylindrical pin according to claim 1, which is characterized in that further comprise step d：
The opening of wire connecting portion is carried out reaming flange by reaming flange.
7. the preparation method of reducing cylindrical pin according to claim 6, which is characterized in that the reaming flange is to use
Wire connecting portion opening top pressure effect of the thimble to driving rotation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611196225.4A CN106654798B (en) | 2016-12-22 | 2016-12-22 | A kind of preparation method of reducing cylindrical pin |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611196225.4A CN106654798B (en) | 2016-12-22 | 2016-12-22 | A kind of preparation method of reducing cylindrical pin |
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| CN106654798A CN106654798A (en) | 2017-05-10 |
| CN106654798B true CN106654798B (en) | 2018-09-25 |
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| CN112701553B (en) * | 2020-12-14 | 2022-10-21 | 慈溪市寅升电器有限公司 | Preparation method of solid power supply pin |
| CN112701552B (en) * | 2020-12-14 | 2022-06-21 | 慈溪市寅升电器有限公司 | Solid power supply pin and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11162613A (en) * | 1997-11-25 | 1999-06-18 | Funabashi Denshi Kk | Manufacture of connector pin and molding device for connector pin slip-off prevention recessed part |
| JP2000197911A (en) * | 1998-12-28 | 2000-07-18 | Showa Alum Corp | Pultrusion method of tube and drawing and pultrusion device |
| JP2005207670A (en) * | 2004-01-22 | 2005-08-04 | Kobe Steel Ltd | Internally grooved tube, and its manufacturing device and method |
| CN100593885C (en) * | 2006-12-04 | 2010-03-10 | 李世煌 | Plug terminal |
| CN201112736Y (en) * | 2007-09-11 | 2008-09-10 | 虞寅达 | Contact pin used for electric connection |
| CN101330188B (en) * | 2008-07-01 | 2010-06-02 | 虞寅达 | Method for preparing cylindrical pin for electric connection |
| CN105057470B (en) * | 2015-09-18 | 2017-06-27 | 河源市北美通电子科技有限公司 | A kind of processing jig and processing method |
| CN105305128A (en) * | 2015-10-29 | 2016-02-03 | 宁波市鄞州佳迪五金塑胶有限公司 | National standard plug support and manufacturing method thereof |
| CN205236633U (en) * | 2015-12-01 | 2016-05-18 | 重庆材料研究院有限公司 | Reducing processingequipment of thin wall minor diameter steel pipe |
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Effective date of registration: 20200717 Address after: Guan Hai Wei Zhen Shen Shi Qiao Cun, Cixi City, Ningbo City, Zhejiang Province Patentee after: Cixi Yinsheng Electric Appliance Co., Ltd Address before: Cixi City, Zhejiang province 315314 Ningbo Guanhaiwei Industrial District No. 998 ancient Shilu Patentee before: Yu Dongsheng |