CN107393747B - Contact spring piece and processing technology and processing device thereof - Google Patents
Contact spring piece and processing technology and processing device thereof Download PDFInfo
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- CN107393747B CN107393747B CN201710775068.0A CN201710775068A CN107393747B CN 107393747 B CN107393747 B CN 107393747B CN 201710775068 A CN201710775068 A CN 201710775068A CN 107393747 B CN107393747 B CN 107393747B
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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
- H01H11/06—Fixing of contacts to carrier ; Fixing of contacts to insulating carrier
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Abstract
The invention provides a contact spring piece and a processing technology and a processing device thereof, and relates to the technical field of contact spring pieces. The processing technology of the contact spring piece comprises the following steps: and punching and welding the contact material and the elastic sheet material to form a sheet. Then, the sheet is punched to form the contact dome. The contact spring plate is processed by the processing technology. The processing device of the contact spring plate is applied to the processing technology. The contact spring piece, the processing technology and the processing device thereof provided by the invention can realize continuous punching and welding and punching processes of the contact spring piece, and have the advantages of less production flow, simple and convenient process, high contact strength between the contact and the spring piece and good conductivity.
Description
Technical Field
The invention relates to the technical field of contact spring pieces, in particular to a contact spring piece and a processing technology and a processing device thereof.
Background
The contact spring belongs to a contact element of an automatic transfer switch, mainly plays a role in connecting, bearing and breaking current, and has a decisive role in the safety and the applicability of the automatic transfer switch, so that the contact spring needs to have good mechanical property and conductivity.
With the rapid development of the power industry, the automatic transfer switch needs to carry large current and has high feasibility and stability. In the existing processing technology, the contact elastic sheet of the automatic transfer switch is usually produced by adopting an in-mold contact riveting punch forming technology, a contact needs to be produced firstly and then punch formed, the production process is complicated, more importantly, the contact and the elastic sheet are connected in a riveting mode, the bonding strength is low, the contact resistance is large, and therefore the safety and the applicability of the automatic transfer switch are reduced.
Disclosure of Invention
The invention aims to provide a processing technology of a contact spring plate, which has the advantages of less production flow, simple and convenient process, high contact strength between a contact and the spring plate and good conductivity.
Another objective of the present invention is to provide a processing apparatus for a contact spring, which has the advantages of less production process, simple process, high contact strength between the contact and the spring, and good electrical conductivity.
The invention also aims to provide a contact spring plate which has the advantages of less production flow, simple and convenient process, high contact strength between a contact and the spring plate and good conductivity.
The embodiment of the invention is realized by the following steps:
a processing technology of a contact spring piece comprises the following steps:
punching and welding the contact material and the elastic sheet material to form a sheet;
and stamping the sheet material to form the contact spring sheet.
Further, before the step of forming the sheet by punching and welding the contact material and the spring plate material, the processing technology of the contact spring plate further comprises the following steps:
conveying contact raw materials;
and cutting the contact raw material to obtain the contact material, and placing the contact material on the elastic sheet material.
Further, the step of feeding the contact raw material includes:
conveying the contact raw material in a first direction;
the processing technology of the contact spring piece further comprises the following steps:
conveying the spring material along a second direction, wherein the second direction intersects the first direction.
Further, the step of performing the punching welding on the contact material and the spring plate material to form the sheet material comprises the following steps:
and punching and welding the contact material and the elastic sheet material by adopting resistance welding to form a sheet.
Further, the step of stamping the sheet to form the contact dome comprises:
stamping and shaping the contact material to obtain a contact;
stamping the elastic sheet material to form elastic sheet segments; each spring segment is provided with one contact, and the spring segments and the contacts form the contact spring pieces.
Further, the processing technology of the contact spring piece also comprises the following steps:
and carrying out surface treatment on the contact spring.
A processing device of a contact spring piece comprises:
and (3) punching and welding device: the punching and welding device is used for punching and welding the contact material and the elastic sheet material to form a sheet;
a stamping device: for stamping the sheet material to form the contact dome.
Further, the processing device of the contact spring piece further comprises:
a first conveying device: for conveying the contact raw material in a first direction;
a second conveying device: conveying the spring material along a second direction, wherein the second direction intersects the first direction;
a cutting device: the contact material is used for cutting the contact raw material to obtain the contact material, and the contact material is placed on the elastic sheet material.
Further, the stamping device is also used for stamping and shaping the contact material to obtain contacts and stamping the elastic sheet material to form elastic sheet segments; each spring segment is provided with one contact, and the spring segments and the contacts form the contact spring pieces.
A contact spring piece is processed by adopting a processing technology of the contact spring piece, and the processing technology of the contact spring piece comprises the following steps:
punching and welding the contact material and the elastic sheet material to form a sheet;
and stamping the sheet material to form the contact spring sheet.
The processing technology and the processing device of the contact spring plate provided by the embodiment of the invention have the beneficial effects that: according to the processing technology of the contact spring plate provided by the embodiment of the invention, the contact material and the spring plate material are punched and welded to form the sheet, and the sheet is punched to form the contact spring plate, so that the punching and welding and punching processes of the contact spring plate can be continuously carried out, the production flow is less, the process is simple and convenient, and the contact strength between the contact and the spring plate is high, and the conductivity is good.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view of a contact spring to be processed by a processing process of the contact spring according to a first embodiment of the present invention;
fig. 2 is a schematic process flow diagram of a processing process of a contact spring according to a first embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating sub-steps of step 150 in FIG. 2;
fig. 4 is a block diagram of a processing apparatus for a contact spring according to a second embodiment of the present invention;
fig. 5 is a schematic partial structural view of a processing device for a contact spring according to a second embodiment of the present invention;
fig. 6 is a schematic structural view of a first conveying device of a processing device for a contact spring according to a second embodiment of the present invention;
fig. 7 is a schematic structural diagram of a cutting blade of a cutting device of a device for processing a contact spring according to a second embodiment of the present invention;
fig. 8 is a schematic structural diagram of a limiting block of a cutting device of a contact spring processing device according to a second embodiment of the present invention.
Icon: 10-a contact spring; 11-a contact; 12-a spring plate; 100-processing technology of contact spring pieces; 200-a processing device of the contact spring plate; 210-a first conveyor; 211-a guide rail; 212-a feed channel; 213-feed inlet; 214-a feed port; 220-a second conveyor; 221-a support device; 230-a cutting device; 231-a cutter; 2311-mounting holes; 2312-cutting teeth; 2313-grooving; 232-a limiting block; 2321-a limiting part; 2322-a linker; 2323-connecting hole; 2324-card slot; 240-a stamping and welding device; 241-spot welding a head; 2411-bump; 250-a stamping device; 260-a surface treatment device; 270-a cleaning device; 280-drying device.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inside", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are used for convenience of description and simplification of description, but do not indicate or imply that the equipment or elements that are referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
First embodiment
Referring to fig. 1 and fig. 2, the present embodiment provides a processing technology 100 for a contact spring 10. The contact spring 10 may be a contact spring 10 in which the contact 11 is circular, or may be a contact spring 10 in which the contact 11 is square. The processing technology 100 of the contact spring plate is particularly suitable for processing the contact spring plate 10 of the automatic transfer switch.
The contact spring processing technology 100 processes a contact raw material and a spring material to obtain a contact spring 10.
The contact material is a material for processing the contact 11. In this embodiment, the contact raw material may be a silver wire or a silver tape, wherein the silver wire is used for processing to obtain the circular contact 11, and the silver tape is used for processing to obtain the square contact 11. Of course, in other embodiments of the present invention, the contact raw material may be other metal materials or have other shapes, and is selected according to the contact 11 to be processed. The shell fragment material is a raw material for processing the shell fragment 12. In this embodiment, the spring plate material is a copper strip. Of course, in other embodiments of the present invention, the spring plate material may also be made of other metal materials or adopt other shapes, and is selected according to the spring plate 12 to be processed.
The dimensions of the contact stock material and the dimensions of the spring plate material may be pre-calculated and determined prior to processing. The size of the contact raw material is calculated according to the shape and size of the contact 11 to be processed, the type of the raw material, and the type and hardness of the spring piece material. If the raw material of the contact is silver wire, the diameter of the silver wire is 0.5-2.5mm, and the thickness of the spring plate material is 0.1-2.0mm, the contact spring plate 10 with the round contact 11 can be produced; if the raw material of the contact is silver strip, the maximum width of the silver strip is 3.2mm, the thickness of the silver strip is 0.5-2.5mm, and the thickness of the spring plate material is 0.1-2.0mm, so that the production of the contact spring plate 10 with the square contact 11 can be realized.
In this embodiment, the production of the contact spring 10 with the contact 11 being a circle is taken as an example to specifically describe, wherein the diameter of the contact 11 is 3.8mm, the height is 0.5mm, the contact raw material is silver wire, the spring material is copper strip, the diameter of the silver wire is calculated and determined to be 2.0mm, the thickness of the spring material is 0.8mm, and the width is 2.0 mm.
Referring to fig. 2, the process 100 for manufacturing the contact spring plate includes:
step S110, a contact point raw material is conveyed.
Before step S110, the feeding length of the contact raw material may be calculated and determined, the feeding length of the contact raw material is determined according to the expected deformation of the spring material during processing, and the expected deformation of the spring material during processing may be determined empirically or obtained through experiments. The raw material of the contact is silver wire or silver strip, and the feeding length of the contact is 0-3.2 mm. In this embodiment, the spring plate material is a copper strip, the expected deformation amount during processing is 0.45mm, the contact raw material is a silver wire, and the feeding length is 2.35 mm.
In addition, in the present embodiment, the contact material is conveyed in the first direction.
Step S120, the spring material is conveyed.
In this embodiment, the spring material is transported along a second direction, wherein the second direction intersects the first direction. It will be appreciated that the spring material and the contact stock material may be processed as they are transported to the intersection of the second and first directions. In the present embodiment, the second direction is preferably perpendicular to the first direction.
It should be noted that step S110 and step S120 are not in sequence, and may be performed in tandem or simultaneously. In this embodiment, step S110 and step S120 are preferably performed simultaneously.
Step S130, cutting the contact raw material to obtain a contact material, and placing the contact material on the elastic sheet material.
The feeding length is a length for feeding the contact material once, and the contact material can be cut after being conveyed to a required feeding length, so that the contact material with a required length can be obtained. It should be understood that the length of the cut contact material is equal to the feed length of the contact stock material. In this example, the length of the contact material obtained by cutting was 2.35 mm.
And step S140, performing punching welding on the contact material and the elastic sheet material to form a sheet.
The contact material and the elastic sheet material are punched and welded, so that the contact surface between the contact material and the elastic sheet material is melted, and the contact material is completely welded with the elastic sheet material under the action of welding pressure, thereby forming the sheet.
In the embodiment, the impulse welding adopts a resistance welding method, welding materials are not needed, welding current is large, discharging time is short, obvious smoke dust is not generated during welding, visible welding electric arcs are not generated, and welding protection measures are not needed. In addition, the welding current and welding time are determined according to the diameter of the contact material and the thickness of the spring plate material. In the embodiment, the welding current is 10.5-11.5KA, and the welding time is 5-8 ms.
In step S150, the sheet is punched to form the contact dome 10.
Referring to fig. 3, step S150 may include:
and step 151, stamping and shaping the contact material to obtain the contact 11.
The contact material on the sheet is shaped by stamping the sheet several times to obtain contacts 11 of a desired shape, for example round contacts 11 or square contacts 11. In this embodiment, the rounded contact 11 is obtained by reshaping.
Step 152, stamping the spring sheet material to form spring sheet segments. Wherein, each bullet section is provided with a contact 11, and the bullet section and the contact 11 form a contact shell fragment 10.
The elastic sheet material is formed into an elastic sheet section with a required shape by performing punch forming on the sheet material. It will be appreciated that the process may be a continuous process, with each segment corresponding to one contact 11, and each segment forming a contact dome 10 with its corresponding contact 11.
Referring to fig. 2, the process 100 for manufacturing the contact spring piece may further include:
step S160, surface treatment is performed on the contact spring 10.
The surface treatment of the contact dome 10 may include deburring. In this embodiment, the inclined roller is used for deburring, and step S160 may include placing the contact spring 10 and the abrasive into the roller. In the embodiment, the contact spring 10 and the abrasive are put into a roller according to the ratio of 1:2-3, the rotating speed of the roller is 60-90r/min, and the polishing time is 25-35 min.
In addition, the processing technology 100 of the contact spring piece may further include:
step S170, cleaning and drying the contact spring 10.
In this embodiment, deionized water is used to clean the contact spring 10. The drying adopts a centrifugal dryer with warm air, and the drying time is 15 min.
In summary, the processing technology 100 for the contact spring piece provided in this embodiment performs punching and welding on the contact material and the spring piece material to form the sheet, and performs punching and welding on the sheet to form the contact spring piece 10, so that the punching and welding and punching processes of the contact spring piece 10 can be continuously performed, the production flow is few, the process is simple, and the contact strength between the contact 11 and the spring piece 12 is high, and the electrical conductivity is good.
Second embodiment
Referring to fig. 4 and 5, the embodiment provides a processing apparatus 200 for a contact spring plate, and the processing apparatus 200 for a contact spring plate is applied to the processing process 100 for a contact spring plate provided in the first embodiment to produce the contact spring plate 10. The first embodiment can be referred to where this embodiment is not mentioned.
The processing device 200 for the contact spring plate comprises a first conveying device 210, a second conveying device 220, a cutting device 230, a stamping and welding device 240 and a stamping device 250.
Wherein, step S110 is completed by the first conveying device 210.
The first conveying device 210 is used to convey the contact raw material. In this embodiment, the first conveying device 210 is used to convey the contact raw material in the first direction.
Referring to fig. 6, in the present embodiment, the first conveying device 210 includes a guide rail 211. The guide rail 211 is a long strip shape, a feeding channel 212 is arranged in the guide rail 211, and the feeding channel 212 penetrates through the guide rail 211 along the length direction of the guide rail 211. One end of the feeding passage 212 is provided with a feeding port 213, and the other end of the feeding passage 212 is provided with a feeding port 214, and the feeding port 214 is provided near the cutting device 230 to feed the contact raw material to the cutting device 230 so that the cutting device 230 cuts the contact raw material. The end surface of the feed passage 212 where the feed port 213 is provided is inclined so that the end extends into the die-welding device 240 to feed the contact material.
With continued reference to fig. 4 and 5, step S120 is completed by the second conveying device 220.
The second conveying device 220 is used for conveying the spring sheet material along the second direction. Wherein the second direction intersects the first direction. It will be appreciated that the spring material and the contact stock material may be processed as they are transported to the intersection of the second and first directions. In the present embodiment, the second direction is preferably perpendicular to the first direction.
In this embodiment, the second conveying device 220 is installed on a supporting device 221 and located below the stamping and welding device 240, so as to convey the spring material to a predetermined position along the second direction.
Step S130 is completed by the cutting device 230.
The cutting device 230 is used for cutting the contact raw material to obtain the contact material, so that the contact material is placed on the spring plate material.
The cutting device 230 is connected to the punching and welding device 240, and after the contact raw material is conveyed to the required feeding length, the punching and welding device 240 is driven by the punching and welding device 240 to cut the contact raw material to obtain the contact material with the required length, and the contact material is placed on the spring plate material.
Referring to fig. 7 and 8, in the embodiment, the cutting device 230 includes a cutting knife 231 and a limiting block 232, the cutting knife 231 is connected to the punching and welding device 240, the limiting block 232 is connected to the punching and welding device 240, the cutting knife 231 is disposed between the punching and welding device 240 and the limiting block 232, and the limiting block 232 is used for limiting the cutting knife 231.
The cutting knife 231 is shaped like a disk, and a mounting hole 2311 is formed in the middle of the cutting knife and used for being connected with the punching and welding device 240. A plurality of cutting teeth 2312 are uniformly distributed on the periphery of the cutter 231, and a groove 2313 is formed between two adjacent cutting teeth 2312.
The limiting block 232 includes two limiting parts 2321 arranged in parallel and a connecting part 2322 connected between the two limiting parts 2321. The limiting part 2321 is provided with a connecting hole 2323 penetrating through the limiting part 2321, and the limiting part 2321 is connected with the punching and welding device 240 through the connecting hole 2323. A clamping groove 2324 is formed on one side surface of the limiting part 2321 and is used for being matched with the punching and welding device 240, so that the limiting block 232 is firmly fixed.
With continued reference to fig. 4 and 5, step S140 is completed by the stamping and welding device 240.
The stamping and welding device 240 is used for stamping and welding the contact material and the spring plate material to form a sheet material. In this embodiment, the punching and welding device 240 includes a striking rod machine (not shown) and a spot welder head 241 which are connected to each other. The spot welding machine head 241 is connected with the cutter 231 and the limiting block 232. The feeding port 214 of the guide rail 211 is disposed near the spot welder head 241, and the second conveyor 220 is disposed below the spot welder head 241. A projection 2411 is arranged on one side surface of the spot welding machine head 241 and is used for being matched with the clamping groove 2324, so that the limiting block 232 is firmly fixed.
After the contact raw material is conveyed to the required feeding length, the striking rod machine presses down the spot welding head 241 to drive the cutter 231 to cut the contact material with the required length, and simultaneously the spot welding head 241 presses down the cut contact material, so that the contact material and the elastic sheet material are contacted and electrified to complete welding.
Step S150 is completed by the press 250.
The punching device 250 is used for punching the sheet material to form the contact dome 10. In this embodiment, the stamping device 250 is used to stamp and shape the contact material to obtain the contacts 11 and stamp the spring piece material to form the spring piece. Wherein, each bullet section is provided with a contact 11, and the bullet section and the contact 11 form a contact shell fragment 10. In this embodiment, the punching device 250 may be connected to the second conveying device 220.
After the contact material and the spring plate material are subjected to punching and welding, a sheet is obtained, then the second conveying device 220 continues to convey the sheet to a die, and the punching device 250 performs multiple in-die punching and shaping on the sheet, so that the circular contact 11 is obtained. Then, the stamping device 250 continues to stamp the spring piece material, each spring piece segment corresponds to one contact 11, and each spring piece segment and its corresponding contact 11 form a contact spring piece 10.
In addition, the processing device 200 for the contact spring piece may further include a surface treatment device 260.
Step S160 is completed by the surface treatment device 260.
The surface treatment device 260 is used for performing surface treatment on the contact spring 10. In this embodiment, the surface treatment device 260 may include a deburring device. In this embodiment, the deburring device employs an inclined drum. When surface treatment is performed, the contact spring 10 and the abrasive are put into a roller. In the embodiment, the contact spring 10 and the abrasive are put into a roller according to the ratio of 1:2-3, the rotating speed of the roller is 60-90r/min, and the polishing time is 25-35 min. In this embodiment, the deburring device may be connected to the second conveying device 220, so that the contact spring 10 and the abrasive are conveyed to the deburring device.
In addition, the processing device 200 for the contact spring plate may further include a cleaning device 270 and a drying device 280.
The step S170 is completed by the washing device 270 and the drying device 280.
In this embodiment, the cleaning device 270 cleans the contact spring 10, and preferably uses deionized water. The drying device 280 is used for drying the cleaned contact spring plate 10, and preferably adopts a centrifugal dryer with warm air, and the drying time is 15 min. In this embodiment, the deburring device may be connected to the cleaning device 270, so that the contact spring 10 is conveyed to the cleaning device 270. The washing device 270 may be connected with a drying device 280.
In summary, the processing apparatus 200 for a contact spring piece provided in this embodiment can realize continuous punching and welding and stamping processes of the contact spring piece 10, and has the advantages of a small production flow, a simple process, high contact strength between the contacts 11 and the spring piece 12, and good electrical conductivity.
Third embodiment
Referring to fig. 1, the present embodiment provides a contact spring 10, which is processed by the processing process 100 of the contact spring according to the first embodiment. Because the contact spring 10 is processed by the processing technology 100 of the contact spring provided by the first embodiment, the production flow of the contact spring 10 is less, the process is simple, and the contact strength between the contact 11 and the spring 12 is high and the conductivity is good.
The following table shows the performance comparison of the contact spring 10 (indicated by sample a) produced by the prior art process and the contact spring 10 (indicated by sample b) provided by the present embodiment:
| performance of | Sample a | Sample b |
| Binding Strength (IBS) | 80 | 120 |
| Contact resistance (m omega) | 25.5 | 14.7 |
| Load life (second, 1000A, 380V) | 104 |
104The contact is intact |
As can be seen from the above table, the bonding strength and the load life of the contact spring plate 10 provided in this embodiment are significantly improved compared with those of the contact spring plate 10 produced by the existing processing technology, and the contact resistance of the spot-welded contact spring plate 10 is significantly reduced compared with that of the contact spring plate 10 produced by the existing processing technology.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A processing technology of a contact spring piece is characterized by comprising the following steps:
conveying a contact raw material in a first direction;
conveying a spring material in a second direction, wherein the second direction intersects the first direction;
cutting the contact raw material to obtain a contact material, and placing the contact material on the elastic sheet material;
punching and welding the contact material and the elastic sheet material to form a sheet;
and stamping the sheet material to form the contact spring sheet.
2. The process of claim 1, wherein the step of stamping the contact material and the spring plate material to form the sheet comprises:
and punching and welding the contact material and the elastic sheet material by adopting resistance welding to form a sheet.
3. The process of claim 1, wherein the step of stamping the sheet to form the contact dome comprises:
stamping and shaping the contact material to obtain a contact;
stamping the elastic sheet material to form elastic sheet segments; each spring segment is provided with one contact, and the spring segments and the contacts form the contact spring pieces.
4. The processing technology of the contact spring piece according to claim 1, further comprising:
and carrying out surface treatment on the contact spring.
5. The utility model provides a processingequipment of contact shell fragment which characterized in that includes:
a first conveying device: for conveying the contact raw material in a first direction;
a second conveying device: for conveying a spring material in a second direction, wherein the second direction intersects the first direction;
a cutting device: the contact material is used for cutting the contact raw material to obtain a contact material, and the contact material is placed on the elastic sheet material;
and (3) punching and welding device: the contact material and the spring plate material are punched and welded to form a sheet;
a stamping device: for stamping the sheet material to form the contact dome.
6. The apparatus for processing a contact spring as claimed in claim 5, wherein the stamping apparatus is further configured to stamp and shape the contact material to obtain contacts and stamp the spring material to form spring segments; each spring segment is provided with one contact, and the spring segments and the contacts form the contact spring pieces.
7. The contact spring piece is characterized by being processed by adopting a processing technology of the contact spring piece, and the processing technology of the contact spring piece comprises the following steps:
conveying a contact raw material in a first direction;
conveying a spring material in a second direction, wherein the second direction intersects the first direction;
cutting the contact raw material to obtain a contact material, and placing the contact material on the elastic sheet material;
punching and welding the contact material and the elastic sheet material to form a sheet;
and stamping the sheet material to form the contact spring sheet.
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| CN201408666Y (en) * | 2009-05-18 | 2010-02-17 | 广州（从化）亨龙机电制造实业有限公司 | Contact silver strip |
| CN102059422A (en) * | 2010-12-10 | 2011-05-18 | 哈尔滨工业大学 | Electrical contact welding method |
| CN104157493A (en) * | 2014-07-29 | 2014-11-19 | 广州森下电装科技有限公司 | Switch module and contact point manufacturing method thereof |
| CN105161380A (en) * | 2015-09-17 | 2015-12-16 | 温州新科特种材料有限公司 | Circuit breaker electrical contact support member and preparation method thereof |
| CN207353130U (en) * | 2017-08-31 | 2018-05-11 | 四川艾达电器有限公司 | Contact shrapnel and its processing unit (plant) |
| CN109366191A (en) * | 2018-12-28 | 2019-02-22 | 王飞 | A kind of apparatus for automatically punching welding of movable contact and dynamic touching bridge |
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|---|---|
| CN107393747A (en) | 2017-11-24 |
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