CN104658783B - A kind of rivet contacts process feed arrangement - Google Patents
A kind of rivet contacts process feed arrangement Download PDFInfo
- Publication number
- CN104658783B CN104658783B CN201510039976.4A CN201510039976A CN104658783B CN 104658783 B CN104658783 B CN 104658783B CN 201510039976 A CN201510039976 A CN 201510039976A CN 104658783 B CN104658783 B CN 104658783B
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- CN
- China
- Prior art keywords
- drive link
- lever
- connect base
- rivet contacts
- fixed component
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
Abstract
A kind of rivet contacts process feed arrangement, it is characterized in that including cam, lever arm, lever, drive link, track, connect base and fixed component, lever lower end connects lever arm, the upper end of lever is by means of bolt connection in connect base, connect base is sheathed on drive link, and fixed component further fixes connect base, and cam acts on lever arm so as to drive drive link.Precision and the flexibility of charging regulation are added according to the feed arrangement of the present invention, drive link stress is parallel and reduces the frictional force of drive link and track, while lever drive can flexibly increase the pressure that drive link passes out.The present invention also relates to a kind of rivet contacts processing technology.
Description
Technical field
The present invention relates to a kind of rivet contacts processing feed arrangement and processing technology.
Background technology
Silver contact, also known as rivet contacts, it is widely used in appliance switch circuit contact component, such as switch, temperature
Control device, the product such as relay circuit from, attach together and put.It is very high to current requirements from, splice grafting contact element, contact meeting of low quality
Influence conductive resistance and cause product to generate heat, so as to influence the safe to use and service life of product.Because silver belongs to valuable gold
Category, therefore in order to cost-effective, compound rivet contacts are now generally used, it is main in the process of compound rivet contacts
Using two kinds of techniques, one is exactly high temperature brazing, and second is exactly cold welding.Cold welding belongs to one kind of Pressure Welding, refers to do not having
Have heating in the case of by means of pressure so that the contact site of multilayer materials metal produce plastic deformation and by means of
Atomic force and be combined together.In cold welding, bond strength is a very distinct issues, can possibly even be gone out when serious
The phenomenon that existing composite bed comes off.High temperature brazing is as its name suggests then welded different metal layer using very high temperature on the contact surface
Get up.But in this approach, due to having used high temperature, it is clear that add processing cost；In addition, high-temperature process would generally be in product
Surface can produce oxide layer, and then have influence on the difficulty of the oxide layer processing of product, and product surface is extremely difficult to bright and clean, and surface has
Oxide layer or finish not enough can then influence electrician's characteristic of product, and the generation of oxide layer also has influence on production to a certain extent
The accuracy of product size.
In addition, referring to Fig. 1, existing process equipment directly drives the roller 2 on the head of drive link 3 come real using cam 1 more
Existing drive link motion feeds so as to realize；But there is following defect in existing feeding manner：Feed unstable, it is difficult to adjust, essence
Degree is not high；Impact direction and drive link are angled between cam and drive head roller, can increase the friction between drive link and track 4
Power, in turn result in feed arrangement and be prone to wear out.
The content of the invention
It is contemplated that overcome drawbacks described above, there is provided a kind of rivet contacts process feed arrangement, it is characterised in that including convex
Wheel, lever arm, lever, drive link, track, connect base and fixed component, lever lower end connection lever arm, the upper end of lever is borrowed
Helping bolt connection in connect base, connect base is sheathed on drive link, and fixed component further fixes connect base,
Cam acts on lever arm so as to drive drive link.
Preferably, connect base is located at drive link by means of thread bush, and fixed component on connect base contact surface with distinguishing
It is conformed with and groove, fixed component further fixes connect base by means of the cooperation of projection and groove.
Preferably, drive link is cylinder.
The present invention also relates to a kind of rivet contacts processing technology, it is characterised in that comprises the following steps：(1) silver alloy is prepared
Silk material and Copper base material, the silver alloy silk material got ready and Copper base material are supplied using feed arrangement is processed according to the rivet contacts of the present invention
To into cold press, compound rivet contacts prefabricated component is made by the way of cold welding；(2) prefabricated component is put into vacuum to move back
It is heat-treated in stove.
Preferably, maximum temperature is 550 degrees Celsius in vacuum annealing furnace stove, and heat treatment specifically includes：According to 140 degrees Celsius
In-furnace temperature is increased to 350 degrees Celsius by speed hourly, is kept for 2 hours, then according to 120 degrees Celsius of speed hourly
In-furnace temperature is down to room temperature.
Preferably, the vacuum condition is 0.1-1.5Pa.
According to the processing technology of the present invention after under ensureing vacuum state to product heating, temperature holding and cooling processing,
Product surface is not in oxide layer, ensure that the original finish of product, and the product of non-oxidation layer will not increase connecing for product
Get an electric shock and hinder, it is ensured that electrician's performance of product；Each temperature in heat treatment is controlled by temperature automatic control and supervising device
Value or rate of change and temperature hold-time value, it can effectively control the characteristic of product；According to made from the processing technology of the present invention
Bond strength in joint product between composite is very high, and its electrician's performance and service life have all reached very high design and wanted
Ask；Meanwhile the joint product according to made from the processing technology of the present invention has taken into account material hardness and toughness, because product is hard
Degree, toughness are the key characteristics in properties of product and life-span, and hardness and toughness are two conflicting characteristics of product, hardness higher position
Toughness deficiency occurs, it may appear that phenomena such as product ftractures, hardness deficiency situation just occurs in good toughness, it may appear that deformation of products
Phenomenon.Because heat treatment process employs lower temperature, process costs are greatlyd save.In addition, the present invention passes through original
Single cam drive is changed to the kind of drive that cam adds lever, the precision of increase charging regulation and flexibility；Drive link stress
It is parallel, reduce the frictional force of drive link and track；Lever drive can flexibly increase the pressure that drive link passes out.
Brief description of the drawings
Fig. 1 is feed arrangement structural representation of the prior art；
Fig. 2 is the feed arrangement structural representation according to the present invention；
Fig. 3 is the compound rivet contacts schematic diagram according to the present invention.
Embodiment
Referring to Fig. 3, compound rivet contacts involved in the present invention include the first ag alloy layer 21 positioned at top, are located at
The second ag alloy layer 23 and base copper 22 in an intermediate position of bottom.The top of first ag alloy layer 21 and base copper 22
The head of compound rivet contacts is collectively forming, the bottom of the second ag alloy layer 23 and base copper 22 is collectively forming compound rivet
The foot of contact.
In a preferred embodiment, the first ag alloy layer 21 is identical with the material of the second ag alloy layer 23.Wherein, the silver closes
Gold includes silver, aluminium, copper and chromium, and by weight, silver-colored content is 85-89%, aluminium content 7-13%, copper content 1-2%, chromium content
1-2%.When making silver alloy, each metal of weighing according to the above ratio first, ball mill ball milling in nitrogen atmosphere is placed them into
1.5 hours, it is put into after drying in vacuum melting furnace in 10Pa pressure and 1250 degrees Celsius of lower melting ingot castings, it is then Celsius 880
The lower sintering of degree is squeezed into bar and is incubated 2 hours, extrusion ratio 1: 100；It is eventually fabricated silver alloy silk material.
In a further advantageous embodiment, the first ag alloy layer 21 is different with the material of the second ag alloy layer 23, wherein second
Argentiferous ratio in ag alloy layer 23 is more than the argentiferous ratio of the first ag alloy layer 21.Preferably, second ag alloy layer 23 contains
Silver-colored ratio 89%, the argentiferous ratio of the first ag alloy layer 21 is 85%.The silver alloy can also equally include silver, aluminium, copper and chromium,
Aluminium content is 7-13%, copper content 1-2%, chromium content 1-2%.When making silver alloy, weigh according to the above ratio respectively first each
Metal, ball mill ball milling 1.5 hours in nitrogen atmosphere are placed them into, be put into after drying in vacuum melting furnace in 10Pa pressure
With 1250 degrees Celsius of lower melting ingot castings, then sintering is squeezed into bar and is incubated 2 hours under 880 degrees Celsius, extrusion ratio 1:
100；It is eventually fabricated silver alloy silk material.Because the argentiferous ratio in the second ag alloy layer 23 is more than the argentiferous of the first ag alloy layer 21
Ratio, be advantageous to lift rivet contacts electrician performance and save the use of silver.
The invention further relates to the feed arrangement used in compound rivet contacts process, the feed arrangement can be used
In the feed process of cold welding or heat treatment.Referring to Fig. 2, included according to the feed arrangement of the present invention：Cam 11, lever arm
12, lever 15, drive link 13, track 14, connect base 16 and fixed component 17.Lever lower end connect lever arm, lever it is upper
End is by means of bolt connection in connect base, and connect base is sheathed on drive link, and fixed component further consolidates connect base
Live calmly.Cam acts on lever arm so as to drive drive link.
Preferably, drive link is cylinder, can reduce frictional force.
Preferably, connect base is located at drive link by means of thread bush, and fixed component on connect base contact surface with distinguishing
It is conformed with and groove, fixed component further fixes connect base by means of the cooperation of projection and groove；Preferably, it is fixed
Part is slidably sheathed on drive link, when fixed component along drive link close to connect base when, projection and groove, which are realized, to be coordinated,
Fixed component is fixed on drive link by means of the screwing bolts of side.Therefore can be upper in drive link by adjusting connect base
Put to adjust drive link start of a run or scope.Alternatively, it is also possible to by adjusting between the upper end of lever and connect base
Connecting bolt adjusts drive link start of a run or scope.
Preferably, lever arm is adjustably pivotally connected to the lower end of lever, therefore can be relative by adjusting lever arm
The regulation of drive link start of a run or scope is realized in the angle of lever.Preferably, lever arm both ends are respectively arranged with one
Roller, belt is arranged on the outside of two rollers, when cam is acted on belt, belt can follow the rotation of cam, so can be with
Substantially reduce the friction of contact surface.
Comprised the following steps according to the compound rivet contacts processing technology of the present invention：It will be got ready using foregoing feed arrangement
Silver alloy silk material and Copper base material be fed into cold press, compound rivet contacts prefabricated component is made by the way of cold welding；
The prefabricated component is put into vacuum annealing furnace and is heat-treated.Preferably, the vacuum condition is 0.1-1.5Pa.Preferably, institute
State vacuum annealing furnace and include temperature control and supervising device, supervising device includes the multiple temperature sensors set in stove, can be with
Carry out each regional temperature of real-time detection；Temperature control equipment can set the soaking time at the temperature and steady temperature in each stove area, protect
The warm time, which reaches, can be automatically stopped heating.Heat treatment step is mainly including the temperature increase rate of temperature rise period, constant temperature stage
The rate of temperature fall of temperature value and duration and temperature-fall period (final temperature is traditionally arranged to be room temperature).Vacuum heat can be with
It is effectively improved the bond strength of compound rivet contacts and prevents the oxidation of silver, while improves the equilibrium of the hardness of product, toughness.
In a preferred embodiment, maximum temperature is 550 degrees Celsius in vacuum annealing furnace stove, is heat-treated specific bag
Include：In-furnace temperature is increased to 350 degrees Celsius according to 140 degrees Celsius of speed hourly, is kept for 2 hours, is then taken the photograph according to 120
In-furnace temperature is down to room temperature by family name's degree speed hourly；
In another preferred embodiment, maximum temperature is 550 degrees Celsius in vacuum annealing furnace stove, is heat-treated specific bag
Include：In-furnace temperature is increased to 380 degrees Celsius according to 150 degrees Celsius of speed hourly, kept for 1.5 hours, then according to 130
In-furnace temperature is down to room temperature by degree Celsius speed hourly.
Compare through experiment, being heat-treated front and rear rivet contacts electrician's performance does not have a significant change, and the rivet after being heat-treated
Contact has relative to the prefabricated component before heat treatment in bond strength to be significantly improved.
Referring to Fig. 3, in a preferred embodiment, according to the compound rivet contacts that the processing technology of the present invention is made
With following size：Head diameter D：2.5-4mm head thickness T：1.5-2mm, head silver layer (the first ag alloy layer) thickness S：
0.4-0.8mm (because in the absence of oxide layer, silver thickness is than relatively thin), foot diameter d：1-2mm, foot length L：1.5-4mm
Foot's silver layer (the second ag alloy layer) thickness H：0.6-1.8mm, head edge inclination angle theta：20 degree or so.
Claims (5)
1. a kind of rivet contacts process feed arrangement, including cam (11), lever arm (12), lever (15), drive link (13), rail
Road (14), connect base (16) and fixed component (17), lever lower end connection lever arm, the upper end of lever is by means of bolt connection
In connect base, cam acts on lever arm so as to drive drive link, it is characterised in that connect base is located at by means of thread bush
Drive link, fixed component on connect base contact surface with being respectively equipped with projection and groove, and fixed component is by means of projection and groove
Cooperation further fix connect base, fixed component is slidably sheathed on drive link, when fixed component is leaned on along drive link
During nearly connect base, projection and groove realize and coordinated that fixed component is fixed on drive link, lever by means of the screwing bolts of side
Arm is adjustably pivotally connected to the lower end of lever, and lever arm both ends are respectively arranged with a roller, skin is arranged on the outside of two rollers
Band, when cam is acted on belt, belt can follow cam and rotate.
2. rivet contacts according to claim 1 process feed arrangement, it is characterised in that drive link is cylinder.
3. a kind of rivet contacts processing technology, it is characterised in that comprise the following steps：(1) silver alloy silk material and Copper base material are prepared,
The silver alloy silk material got ready is fed into Copper base material using the rivet contacts processing feed arrangement described in claim 1 or 2
Cold press, compound rivet contacts prefabricated component is made by the way of cold welding；(2) the compound rivet contacts prefabricated component is put
Enter in vacuum annealing furnace and be heat-treated.
4. rivet contacts processing technology according to claim 3, it is characterised in that maximum temperature is in vacuum annealing furnace stove
550 degrees Celsius, heat treatment specifically includes：In-furnace temperature is increased to 350 degrees Celsius according to 140 degrees Celsius of speed hourly,
Kept for 2 hours, in-furnace temperature is then down to room temperature according to 120 degrees Celsius of speed hourly.
5. rivet contacts processing technology according to claim 4, it is characterised in that vacuum condition 0.1-1.5Pa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510039976.4A CN104658783B (en) | 2015-01-27 | 2015-01-27 | A kind of rivet contacts process feed arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510039976.4A CN104658783B (en) | 2015-01-27 | 2015-01-27 | A kind of rivet contacts process feed arrangement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104658783A CN104658783A (en) | 2015-05-27 |
| CN104658783B true CN104658783B (en) | 2017-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510039976.4A Expired - Fee Related CN104658783B (en) | 2015-01-27 | 2015-01-27 | A kind of rivet contacts process feed arrangement |
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| CN (1) | CN104658783B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106584026B (en) * | 2016-11-23 | 2018-08-10 | 滁州聚保利电装有限公司 | A kind of production technology of refrigerator temperature controller |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5246512A (en) * | 1990-06-07 | 1993-09-21 | Kabushiki Kaisha Toshiba | Contact for a vacuum interrupter |
| CN101217075A (en) * | 2007-12-26 | 2008-07-09 | 王益敏 | A compound contact structure and manufacturing technology |
| CN101587788A (en) * | 2009-06-25 | 2009-11-25 | 温州宏丰电工合金有限公司 | Device and method for producing cold pressure welding compound rivet contacts |
| CN101752116A (en) * | 2009-12-30 | 2010-06-23 | 温州聚星银触点有限公司 | Manufacturing device of three-layered composite electric contact |
| CN102534280A (en) * | 2012-02-17 | 2012-07-04 | 西安理工大学 | Method for preparing AgTiB2 contact material |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10261303B3 (en) * | 2002-12-27 | 2004-06-24 | Wieland-Werke Ag | Electrically conducting composite material used in automotive applications as electrical contact components, such as connectors or connections, comprises a metal strip and a contact layer containing carbon powder and a further additive |
-
2015
- 2015-01-27 CN CN201510039976.4A patent/CN104658783B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5246512A (en) * | 1990-06-07 | 1993-09-21 | Kabushiki Kaisha Toshiba | Contact for a vacuum interrupter |
| CN101217075A (en) * | 2007-12-26 | 2008-07-09 | 王益敏 | A compound contact structure and manufacturing technology |
| CN101587788A (en) * | 2009-06-25 | 2009-11-25 | 温州宏丰电工合金有限公司 | Device and method for producing cold pressure welding compound rivet contacts |
| CN101752116A (en) * | 2009-12-30 | 2010-06-23 | 温州聚星银触点有限公司 | Manufacturing device of three-layered composite electric contact |
| CN102534280A (en) * | 2012-02-17 | 2012-07-04 | 西安理工大学 | Method for preparing AgTiB2 contact material |
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| Publication number | Publication date |
|---|---|
| CN104658783A (en) | 2015-05-27 |
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