A rivet contact processing feeding device
A feeding device and contact technology, applied in electrical components, electrical switches, circuits, etc., can solve the problems of increasing the friction between the transmission rod and the track 4, affecting the dimensional accuracy of the product, and low precision, and achieving increased precision and Flexibility, ensuring electrical performance, saving process costs
Inactive Publication Date: 2017-12-15
SILVER POINT ELECTRONICS TECH CO LTD SHANGHAI
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Problems solved by technology
However, in this method, due to the use of high temperature, the processing cost is obviously increased; in addition, high temperature treatment usually produces an oxide layer on the surface of the product, which in turn affects the difficulty of processing the oxide layer of the product, and the surface of the product is difficult to achieve smoothness. An oxide layer or insufficient finish will affect the electrical characteristics of the product, and the generation of an oxide layer will also affect the accuracy of the product size to a certain extent
[0003] Also, see figure 1 , the existing processing equipment mostly uses the cam 1 to directly drive the roller 2 at the head of the transmission rod 3 to realize the movement of the transmission rod to realize the feeding; but the existing feeding method has the following defects: the feeding is unstable, it is difficult to adjust, the accuracy Not high; the force direction between the cam and the transmission head roller is at an angle to the transmission rod, which will increase the friction between the transmission rod and the track 4, and cause the feeding device to be easy to wear
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[0014] see image 3 , The composite rivet contact involved in the present invention includes a first silver alloy layer 21 at the top, a second silver alloy layer 23 at the bottom and a copper base layer 22 at the middle. The first silver alloy layer 21 and the upper part of the copper base layer 22 jointly form the head of the composite rivet contact, and the second silver alloy layer 23 and the lower part of the copper base layer 22 jointly form the foot of the composite rivet contact.
[0015] In a preferred embodiment, the first silver alloy layer 21 and the second silver alloy layer 23 are made of the same material. Wherein, the silver alloy includes silver, aluminum, copper and chromium. By weight, the content of silver is 85-89%, the content of aluminum is 7-13%, the content of copper is 1-2%, and the content of chromium is 1-2%. When making silver alloys, first weigh each metal according to the above ratio, put them into a ball mill and mill them in a nitrogen atmosph...
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The invention discloses a feeding device for rivet contact processing. The feeding device is characterized by comprising a cam, a lever arm, a lever, a driving rod, a rail, a connecting base and a fixing part; the lever arm is connected with the lower end of the lever; the upper end of the lever is connected to the connecting base through a bolt; the connecting base sleeves the driving rod; the fixing part is used for further fixing the connecting base; the cam acts on the lever arm, so as to drive the driving rod. Through the adoption of the feeding device, the precision and flexibility of feeding adjustment can be improved, the friction between the driving rod and the rail can be reduced due to balanced loading of the driving rod, and the pressure transferred by the driving rod can be flexibly increased through lever driving. The invention further relates to a process for rivet contact processing.
Description
technical field [0001] The invention relates to a rivet contact processing feeding device and a processing technology. Background technique [0002] Silver contacts, also known as rivet contacts, have been widely used in electrical switch circuit contact parts, such as circuit disconnecting and closing devices of switches, thermostats, relays and other products. The separation and closing contacts have high requirements on the current, and the poor quality of the contacts will affect the conductive resistance and cause the product to heat up, thus affecting the safety and service life of the product. Since silver is a precious metal, in order to save costs, composite rivet contacts are generally used. There are two main processes used in the processing of composite rivet contacts, one is high temperature brazing, and the other is cold pressure welding. Cold pressure welding is a kind of pressure welding, which refers to the use of pressure without heating to make the metals...
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IPC IPC(8): H01H11/00
CPCH01H11/04
Inventor 赵明赵喜童
Owner SILVER POINT ELECTRONICS TECH CO LTD SHANGHAI