CN111541124A - Method for manufacturing elastic sheet - Google Patents
Method for manufacturing elastic sheet Download PDFInfo
- Publication number
- CN111541124A CN111541124A CN202010242823.0A CN202010242823A CN111541124A CN 111541124 A CN111541124 A CN 111541124A CN 202010242823 A CN202010242823 A CN 202010242823A CN 111541124 A CN111541124 A CN 111541124A
- Authority
- CN
- China
- Prior art keywords
- elastic sheet
- metal plate
- elastic
- arm
- bending
- Prior art date
- 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.)
- Pending
Links
Images
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
Abstract
A method for manufacturing an elastic sheet comprises the following steps: s10, providing a metal plate, and stamping the metal plate to form a material belt and a plurality of elastic sheet unfolding bodies connected with the material belt into a whole; an included angle which is greater than or equal to 0 degree and less than 90 degrees is formed between the extending direction of the elastic sheet unfolding body and the rolling direction of the metal plate; s20, bending the elastic sheet unfolding body to form an elastic arm and obtain an elastic sheet finished product; the elastic sheet finished product comprises a substrate, the elastic arm is formed by bending and obliquely extending one end of the substrate, a tensioning part is formed at the bending part, and the other end of the substrate is connected with the material belt. The elastic sheet product manufactured by the method has good elastic property and yield property, and is not easy to crack.
Description
Technical Field
The present invention relates to the field of electrical connectors, and more particularly, to a method for manufacturing a spring plate.
Background
Referring to fig. 1 to 3, the elastic sheet 10 generally includes a substrate 11, a tensioning portion 12 formed by bending an end of the substrate 11 in a reverse direction, an elastic arm 13 extending from the tensioning portion 12 to the upper side of the substrate 11, a supporting arm 14 formed by bending and extending the elastic arm 13 toward the substrate 11, and a protection portion 15 bent upward from two lateral sides of the substrate 11 and located outside the supporting arm 14. The elastic arm 13 includes a horizontally extending suction portion 131, an inclined arm 132 formed by extending from the suction portion in an upward direction, and a contact convex hull 133 formed by punching on an upper end of the inclined arm 132. The protecting part 15 is provided with a prepressing hole 151, and two transverse sides of the end part of the supporting arm 14 protrude to form prepressing end parts 141 prepressing in the prepressing hole 151. The elastic sheet 10 is generally formed by press forming a metal sheet, while the size of the existing elastic sheet is reduced, the metal sheet is also becoming thinner and thinner, and the metal sheet is formed by extrusion forming, wherein the extrusion forming is along the X direction shown in fig. 3 as a rolling direction, and an invisible rolling line is formed in the rolling direction. During punching and discharging, as shown in fig. 3, the length direction of the elastic sheet in the unfolded state is perpendicular to the rolling direction, and the bending of the elastic arm 13 is parallel to the rolling direction X, which easily causes cracking or insufficient force of the elastic arm when the elastic arm is bent.
Disclosure of Invention
In view of the above, it is desirable to provide a method for manufacturing an elastic sheet, which is capable of preventing the elastic arm of the ultrathin size elastic sheet from cracking easily and has better elastic performance.
In order to solve the technical problem, the application provides a method for manufacturing an elastic sheet, which comprises the following steps: s10, providing a metal plate, and stamping the metal plate to form a material belt and a plurality of elastic sheet unfolding bodies connected with the material belt into a whole; an included angle which is greater than or equal to 0 degree and less than 90 degrees is formed between the extending direction of the elastic sheet unfolding body and the rolling direction of the metal plate; s20, bending the elastic sheet unfolding body to form an elastic arm and obtain an elastic sheet finished product; the elastic sheet finished product comprises a substrate, the elastic arm is formed by bending and obliquely extending one end of the substrate, a tensioning part is formed at the bending part, and the other end of the substrate is connected with the material belt.
Preferably, the metal plate is made of a copper alloy material, and is formed in an extrusion manner when the metal plate is manufactured, wherein the extrusion direction of the metal plate is the rolling direction of the metal plate.
Preferably, an included angle between the elastic sheet unfolding body and the rolling direction of the metal plate is 0 degree, so that the width of the tensioning portion is perpendicular to the rolling direction.
Preferably, an included angle between the elastic sheet unfolding body and the rolling direction of the metal plate is 45 degrees, so that a 45-degree included angle is formed between the width of the tensioning portion and the rolling direction.
Preferably, step S20 further includes the steps of: s201, bending the free end of the elastic sheet unfolding body to form the supporting arm; s202, bending again to form the elastic arm and the tensioning part; and S203, vertically bending two transverse sides of the substrate to form a protection part positioned on the transverse outer side of the support arm.
Preferably, the elastic arm includes a suction portion extending above the substrate from the tensioning portion and an inclined arm extending in a direction away from the substrate from the suction portion.
Preferably, the top end of the inclined arm is punched upwards to form a contact convex hull.
Preferably, the protection part is provided with a prepressing hole, the support arm is abutted against the upper part of the substrate when pressed downwards, and prepressing end parts extending into the prepressing hole are formed on the two transverse sides of the free end of the support arm in a protruding manner.
Preferably, when the protection portion is formed by bending, the elastic arm needs to be pressed down first, so that the prepressing end portion is clamped into the prepressing hole when the protection portion is formed by bending.
Preferably, step S30 is further included after step S20, the tape is cut off to obtain a single finished spring piece.
When the elastic sheet manufacturing method is used for punch forming, an included angle which is larger than or equal to 0 degrees and smaller than 90 degrees is formed between the elastic sheet unfolding body and the rolling direction of the metal plate, and then the elastic arm is bent to form an elastic arm, so that the bending tensioning part of the elastic arm is not parallel to the rolling direction of the metal plate, but the rolling direction and the bending of the tensioning part form a certain included angle, and therefore, the elastic sheet product produced by the manufacturing method has better elastic force and better yield performance and is not easy to crack at the position of the tensioning part.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application.
FIG. 1 is a perspective view of a prior art spring plate;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
fig. 3 is a schematic arrangement diagram of the elastic sheet and the material belt in the process of manufacturing the elastic sheet in the prior art;
fig. 4 is a schematic view illustrating arrangement of the elastic sheet and the material strap according to an embodiment of the elastic sheet manufacturing method of the present application;
FIG. 5 is a schematic view illustrating arrangement of elastic pieces and a material strap according to a second embodiment of the elastic piece manufacturing method of the present application
Fig. 6 is a simulation diagram of the relationship between the elastic force and the displacement of the elastic arm when the elastic sheet manufactured by the conventional method and the elastic sheet manufactured by the method of the present application are switched between the non-operating state and the operating state.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings.
The structural features of the elastic sheet 10 of the present application have been described in detail in the background art, and are not described herein again, and the names of the structures and components in the background art are directly used.
Referring to fig. 4 and 5, the method for manufacturing a spring plate of the present application includes the following steps:
s10, providing a metal plate for stamping, wherein a material belt 20 and a plurality of groups of elastic sheet unfolding bodies A which are connected into a whole through the material belt 20 are formed in a stamping mode, and the included angle between each elastic sheet unfolding body A and the rolling direction X of the metal plate is 0-89 degrees;
in this step, when the stamping process is completed, the elastic piece unfolding body a is stamped to form the contact convex hull 133, the pre-pressing end 141 located at the free end of the support arm 14, the protection part 15 and the pre-pressing hole 151.
In the embodiment shown in fig. 4, an included angle between the elastic piece spreading body a and the rolling direction is 45 degrees, and in the embodiment shown in fig. 5, an included angle between the elastic piece spreading body a and the rolling direction is 0 degree.
The included angle between the elastic sheet unfolding body A and the rolling direction X of the metal plate is optimal in a preferred mode of 45 degrees as shown in figure 4, so that better elastic force can be obtained, cracking is avoided, and the manufacturing method has the highest efficiency. The 0 degree embodiment of fig. 5 provides the best spring force and total avoidance of cracking, and the spring force is also very well behaved, but the manufacturing efficiency is relatively low compared to the embodiment of fig. 4.
And S20, bending the free end of the elastic sheet unfolding body A to form the supporting arm 14.
S30, bending the elastic arm 13 and the tension part 12 again, and bending the suction part 131 and the inclined arm 132 of the elastic arm 13.
And S40, vertically bending and coating the protection parts 15 positioned at the two transverse sides on the two transverse sides of the supporting arm 14, and clamping the prepressing end part 141 in the prepressing hole 151.
In this step, when the protection portion 15 is bent, the elastic arm 13 needs to be pressed downward, so that the pre-pressing end portion 141 can be smoothly inserted into the pre-pressing hole 151.
Fig. 6 is a simulation analysis diagram of the spring plate product manufactured by the conventional manufacturing method (shown in fig. 3) and the spring plate product manufactured by the manufacturing method of the present application (the embodiment shown in fig. 5).
The X-coordinate is the amount of depression (in mm) of the elastic arm 13, and the Y-coordinate represents the elastic force (in N) of the elastic arm 13; wherein sample 1 represents the existing shrapnel product and sample 2 represents the shrapnel product manufactured by the manufacturing method of the present application; the forward stroke represents a pressing process of the elastic sheet product, and the backward stroke represents a recovery process of the elastic sheet product after being pressed.
The pressing height of the spring plate product in the working state in this embodiment is 0.3mm-0.7mm, the initial pressing height of the spring plate is generally large, and when the spring plate product is stably in the working state, the elastic arm 13 returns to a part, that is, the working state is a return stroke section with 0.3mm-0.7mm pressing in the drawing.
As can be seen from the figure, the elastic force of the elastic sheet product in the working state of pressing 0.3mm is 0.55N for sample 1, and 0.55N for sample 2; under the working state of pressing down 0.7mm, the elastic force of the sample 1 is 1.54N, and the elastic force of the sample 2 is 1.62N; and observing the two return diagrams, the elastic force of the sample 2 is always greater than that of the sample 1 when the sample 1 and the sample 2 are pressed to the same height; namely, the elastic sheet product manufactured by the manufacturing method is superior to the elastic sheet product manufactured by the existing scheme in the aspect of elastic force expression.
It can also be seen that the elastic yield of sample 1 after pressing down is 0.1mm, while the elastic yield of sample 2 is 0.03 mm. Namely, the yield performance of the elastic sheet product produced by the manufacturing method is obviously superior to that of the elastic sheet product manufactured by the existing method.
When the elastic sheet manufacturing method is used for punch forming, an included angle which is larger than or equal to 0 degrees and smaller than 90 degrees is formed between the elastic sheet unfolding body A and the rolling direction of the metal plate, and then the elastic arm is bent to form an elastic arm, so that the bending tensioning part 12 of the elastic arm 13 is not parallel to the rolling direction of the metal plate, but the rolling direction and the bending of the tensioning part 12 form a certain included angle, and therefore, the elastic sheet product produced by the manufacturing method has better elastic force and better yield performance and is not easy to crack at the position of the tensioning part.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A method for manufacturing an elastic sheet is characterized by comprising the following steps:
s10, providing a metal plate, and stamping the metal plate to form a material belt and a plurality of elastic sheet unfolding bodies connected with the material belt into a whole; an included angle which is greater than or equal to 0 degree and less than 90 degrees is formed between the extending direction of the elastic sheet unfolding body and the rolling direction of the metal plate;
s20, bending the elastic sheet unfolding body to form an elastic arm and obtain an elastic sheet finished product; the elastic sheet finished product comprises a substrate, the elastic arm is formed by bending and obliquely extending one end of the substrate, a tensioning part is formed at the bending part, and the other end of the substrate is connected with the material belt.
2. The method of manufacturing a shrapnel as claimed in claim 1, wherein the metal plate is a copper alloy material, and when the metal plate is manufactured, the metal plate is formed by extrusion, and the extrusion direction of the metal plate is the rolling direction of the metal plate.
3. The method of manufacturing a shrapnel as claimed in claim 2, wherein an included angle between the shrapnel spreading body and the rolling direction of the metal plate is 0 degree, so that the width of the tensioning part is perpendicular to the rolling direction.
4. The method of manufacturing a shrapnel as claimed in claim 2, wherein an included angle between the shrapnel spreading body and the rolling direction of the metal plate is 45 degrees, so that an included angle of 45 degrees is formed between the width of the tensioning part and the rolling direction.
5. A method according to any one of claims 1 to 4, wherein step S20 further comprises the steps of:
s201, bending the free end of the elastic sheet unfolding body to form the supporting arm;
s202, bending again to form the elastic arm and the tensioning part;
and S203, vertically bending two transverse sides of the substrate to form a protection part positioned on the transverse outer side of the support arm.
6. The method as claimed in claim 5, wherein the elastic arm includes a suction portion extending from the tension portion to above the substrate and an inclined arm extending from the suction portion in a direction away from the substrate.
7. The method of claim 6, wherein the top end of the inclined arm is stamped upward to form a contact convex hull.
8. The method for manufacturing a spring plate according to claim 5, wherein the protecting portion is provided with a pre-pressing hole, the supporting arm is supported above the substrate when pressed downward, and the free end of the supporting arm is protruded at two lateral sides to form pre-pressing end portions extending into the pre-pressing hole.
9. The method according to claim 8, wherein the resilient arm is pressed down to engage the pre-pressed end portion into the pre-pressed hole when the protection portion is formed by bending.
10. The method for manufacturing a shrapnel as claimed in claim 1, further comprising a step S30 after the step S20, wherein the material strip is cut to obtain a single finished shrapnel product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010242823.0A CN111541124A (en) | 2020-03-31 | 2020-03-31 | Method for manufacturing elastic sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010242823.0A CN111541124A (en) | 2020-03-31 | 2020-03-31 | Method for manufacturing elastic sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111541124A true CN111541124A (en) | 2020-08-14 |
Family
ID=71980029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010242823.0A Pending CN111541124A (en) | 2020-03-31 | 2020-03-31 | Method for manufacturing elastic sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111541124A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102327955A (en) * | 2011-06-23 | 2012-01-25 | 苏州旭创精密模具有限公司 | Stamping method for improving elasticity of spring piece |
| CN203774508U (en) * | 2014-02-19 | 2014-08-13 | 深圳市长盈精密技术股份有限公司 | Contact elastic piece |
| CN107959150A (en) * | 2017-10-24 | 2018-04-24 | 深圳市长盈精密技术股份有限公司 | Unipath shrapnel |
| CN207398373U (en) * | 2017-10-24 | 2018-05-22 | 深圳市长盈精密技术股份有限公司 | Ultrathin shrapnel |
| CN108963710A (en) * | 2018-06-28 | 2018-12-07 | 深圳市长盈精密技术股份有限公司 | Elastic slice manufacturing method |
| CN209434409U (en) * | 2019-01-14 | 2019-09-24 | 深圳市信维通信股份有限公司 | A kind of elastic piece structure |
-
2020
- 2020-03-31 CN CN202010242823.0A patent/CN111541124A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102327955A (en) * | 2011-06-23 | 2012-01-25 | 苏州旭创精密模具有限公司 | Stamping method for improving elasticity of spring piece |
| CN203774508U (en) * | 2014-02-19 | 2014-08-13 | 深圳市长盈精密技术股份有限公司 | Contact elastic piece |
| CN107959150A (en) * | 2017-10-24 | 2018-04-24 | 深圳市长盈精密技术股份有限公司 | Unipath shrapnel |
| CN207398373U (en) * | 2017-10-24 | 2018-05-22 | 深圳市长盈精密技术股份有限公司 | Ultrathin shrapnel |
| CN108963710A (en) * | 2018-06-28 | 2018-12-07 | 深圳市长盈精密技术股份有限公司 | Elastic slice manufacturing method |
| CN209434409U (en) * | 2019-01-14 | 2019-09-24 | 深圳市信维通信股份有限公司 | A kind of elastic piece structure |
Non-Patent Citations (2)
| Title |
|---|
| 柯旭贵: "蓝牙屏蔽盖冲压工艺与模具设计", 《模具工业》 * |
| 胡志鹏等: "Q235钢厚向弯曲试验及其分析", 《塑性工程学报》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1402563B1 (en) | Interposer assembly and method | |
| CN107086396B (en) | Female terminal and method for manufacturing female terminal | |
| US10236603B2 (en) | Press-fit terminal | |
| US8210856B2 (en) | Board terminal | |
| US7584640B1 (en) | Press brake tool | |
| US20110034085A1 (en) | Electrical connector with conductive terminals | |
| US20080171478A1 (en) | Terminal structure of electrical connector | |
| US6524142B2 (en) | Unitary contact spring | |
| JP2009128211A (en) | Probe pin | |
| CN111541124A (en) | Method for manufacturing elastic sheet | |
| US6832917B1 (en) | Interposer assembly | |
| CN110061372B (en) | Crimp connector and method of manufacturing the same | |
| EP0468460A1 (en) | Electrical contact terminal and method of making same | |
| CN1222089C (en) | Socket | |
| JP2019040830A (en) | Terminal fitting | |
| CN1379509A (en) | Terminal used on electric connector and terminal member having carrier | |
| CN210296673U (en) | Electrical connection elastic sheet, connector and electronic equipment | |
| JP2012134045A (en) | Elastic contact and method for manufacturing the same | |
| CN108963710B (en) | Method for manufacturing elastic sheet | |
| CN108767507B (en) | Low-height anti-scraping spring sheet | |
| WO2020026489A1 (en) | Pressure contact | |
| CN202103219U (en) | Electrical connector | |
| JP2018073759A (en) | Pressure contact connector | |
| CN112636014B (en) | Surface mounting deflection-reducing spring sheet with height-stopping base and side-protruding cantilever | |
| CN2745252Y (en) | An LGA socket terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200814 |