CN112885653A - Fuse and manufacturing method thereof - Google Patents
Fuse and manufacturing method thereof Download PDFInfo
- Publication number
- CN112885653A CN112885653A CN202110044893.XA CN202110044893A CN112885653A CN 112885653 A CN112885653 A CN 112885653A CN 202110044893 A CN202110044893 A CN 202110044893A CN 112885653 A CN112885653 A CN 112885653A
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- fuse
- lead
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- tin
- welding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
- H01H69/02—Manufacture of fuses
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
- H01H69/02—Manufacture of fuses
- H01H2069/025—Manufacture of fuses using lasers
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Fuses (AREA)
Abstract
The invention belongs to the technical field of fuses, and particularly relates to a fuse and a manufacturing method thereof, wherein the fuse comprises the following steps: firstly, two lead wires are arranged in two through holes of a base in a penetrating mode, then tin is adhered to the end portions A of the two lead wires, and finally the end portions A of the two lead wires are bent respectively; placing two ends of the fuse wire on the bent end parts A of the two lead wires respectively, and then clamping the end parts of the fuse wire and the bent end parts A of the lead wires; the positive electrode and the negative electrode of the resistance welding machine are respectively abutted against the bent end part A of the lead, two abutting points are positioned on a straight line which is perpendicular to the lead and the fuse at the same time, and then the tin on the lead is melted by electrifying for preset time at preset current, so that the lead and the fuse are welded together at the connecting part; and carrying out secondary welding on welding spots at the joints of the two ends of the fuse wire and the bent end part A of the lead by using a laser welding machine. Compared with the prior art, the invention can weld at the welding spot with high precision, does not influence the fuse part, and improves the welding reliability and the product yield.
Description
Technical Field
The invention belongs to the technical field of fuses, and particularly relates to a fuse and a manufacturing method thereof.
Background
The fuse is a current protection device, also called a current protector, which melts a melt by heat generated by the fuse after a period of time when a current exceeds a specified value, thereby breaking a circuit. The fuse is widely applied to high and low voltage distribution systems, control systems and electric equipment, and is one of the most commonly applied protection devices as a short circuit and overcurrent protector.
The existing fuse manufacturing process sequentially comprises the working procedures of lead wire tin adhering, bending, fuse wire wrapping, current welding, tin dipping, high-frequency welding and the like, in the tin dipping process, a tin bath needs to use high temperature to enable tin to be in a molten state, the principle of the high-frequency welding is that high-frequency current is used for generating an alternating magnetic field in a closed cavity, the high temperature is generated, the tin is molten to perform secondary welding, and the high-frequency welding can not only aim at a welding point, and the fuse wire and the lead wire need to be placed into the closed cavity together. However, in both the solder dipping and high frequency soldering processes, the temperature affects the high tin content fuse, so that the tin on the surface of the fuse melts, the fuse becomes uneven, and the product performance is unstable.
Disclosure of Invention
One of the objects of the present invention is: in order to overcome the defects of the prior art, the method for manufacturing the fuse is provided, welding can be performed at a welding point with high precision, and a fuse wire part is not influenced.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method of manufacturing a fuse, comprising the steps of:
firstly, two lead wires are arranged in two through holes of a base in a penetrating mode, then tin is adhered to the end portions A of the two lead wires, and finally the end portions A of the two lead wires are bent respectively;
placing two ends of the fuse wire on the bent end parts A of the two lead wires respectively, and then clamping the end parts of the fuse wire and the bent end parts A of the lead wires;
the positive electrode and the negative electrode of the resistance welding machine are respectively abutted against the bent end part A of the lead, two abutting points are positioned on a straight line which is perpendicular to the lead and the fuse at the same time, then the lead is electrified for a preset time by preset current, tin on the lead is melted, and the lead and the fuse are welded together at the connecting part;
and carrying out secondary welding on welding spots at the connection positions of the two ends of the fuse wire and the bent end part A of the lead by using a laser welding machine.
As an improvement of the manufacturing method of the fuse according to the present invention, the two leads are aligned before being inserted into the two through holes of the base.
In the method for manufacturing a fuse according to the present invention, the end portions a of the leads are flattened before the two leads are bonded with tin.
As an improvement of the method of manufacturing the fuse of the present invention, the lead is pulled up to a specified position after the secondary soldering is completed.
As an improvement of the manufacturing method of the fuse, after the lead is pulled upwards, the semi-finished fuse product after assembly and welding is detected, and qualified semi-finished fuse products are sorted out.
The manufacturing method of the fuse is an improvement, after qualified semi-finished fuse products are sorted out, the shell is installed on a base of the qualified semi-finished fuse products, and insulating fillers are filled into the shell.
As an improvement of the manufacturing method of the fuse, after the shell is installed, the base is pressed down to be matched with the lock hole of the shell, and a finished fuse product is obtained.
As an improvement of the manufacturing method of the fuse of the present invention, the lead is a tin-clad copper lead.
As an improvement of the manufacturing method of the fuse according to the present invention, the lead is bent to form an "L" shaped structure.
The second purpose of the invention is: there is provided a fuse manufactured by the method of manufacture as hereinbefore described. The fuse comprises a base, a shell, two leads, a fuse wire and insulating filler, wherein the shell is connected with the base through a lock hole and forms an accommodating cavity, the base is provided with two through holes, the two leads respectively penetrate through the through holes, the fuse wire is arranged in the accommodating cavity, two ends of the fuse wire are respectively connected with the end parts of the two leads, and the insulating filler is filled in the accommodating cavity.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a manufacturing method of a fuse, which mainly comprises the working procedures of lead wire tin-bonding, bending, fuse wire wrapping, current welding, laser welding and the like, eliminates the tin immersion step in the existing fuse manufacturing, and uses laser welding to replace high-frequency welding. In addition, the invention also provides the fuse manufactured by the manufacturing method, cold solder joint does not exist, and the product yield is high.
Drawings
FIG. 1 is a schematic view of a manufacturing process of a fuse in the present invention.
Fig. 2 is a schematic view of a fuse in the present invention.
Wherein: 1-base, 2-housing, 3-lead, 4-fuse, 5-insulating filler, 6-solder.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and the accompanying drawings, but the embodiments of the invention are not limited thereto.
Examples
This embodiment provides a manufacturing approach of fuse, adopts fuse kludge equipment to make, and fuse kludge mainly rotates the operation by main carousel, is equipped with main carousel rotating clamp on the main carousel, includes following station: the device comprises a base mounting station, a lead flattening station, a lead tin-sticking station, a lead bending station, a fuse mounting station, a current welding station, a laser welding station, a lead lifting station, an electrical property detection station, a shell sand filling mounting station, a base pressing mounting station and a good product box-entering station. The fuse mounting station is provided with a cutter for cutting the fuse, a rotary clamp for clamping the fuse and a fuse wrapping clamp for mounting the fuse on the terminal pin. And a clamping mechanism is also arranged on the fuse wire mounting station and used for clamping the mounted fuse wire and the lead wire together. The current welding station uses a resistance welder to weld.
As shown in fig. 1, the specific manufacturing method includes the steps of:
s101, manually pouring the detected base into a feeding vibration disc of the fuse assembling machine, allowing the base to enter a feeding track of the fuse assembling machine through vibration of the feeding vibration disc, and then automatically pushing the base on the feeding track into a main turntable rotating clamp on a main turntable of the fuse assembling machine in sequence by a feeding cylinder of the fuse assembling machine;
s102, the main turntable drives the main turntable rotating clamp to rotate to a lead installation station, and the lead installation station automatically penetrates two straightened tin-coated copper leads into two through holes of the base through a lead assembly mechanism;
s103, the main turntable drives the main turntable rotating clamp to rotate to a lead flattening station, and a flattening mechanism is used for flattening the end A to be soldered and bent of the lead;
s104, the main turntable drives the main turntable rotating clamp to rotate to a lead tin adhering station, tin is adhered to the end portion A of the lead, and welding reliability of the post station is improved;
s105, the main turntable drives the main turntable rotating clamp to rotate to a lead bending station, and the end A of the lead after being flattened and tin-adhered is bent into a required shape, namely an L shape;
s106, the main turntable drives the main turntable rotating clamp to rotate to a fuse wire mounting station, after the fuse wire is cut into a standard length by a cutter, the fuse wire is sequentially placed into a wire wrapping clamp on the station by the rotating clamp on the station, the two ends of the fuse wire are respectively placed on the bent end A of the lead wire by the wire wrapping clamp, and the fuse wire and the bent end A of the lead wire are clamped together by a clamping mechanism on the station;
s107, the main turntable drives the main turntable rotating clamp to rotate to a current welding station, the main turntable rotating clamp descends, the positive electrode and the negative electrode of the resistance welding machine are respectively abutted against the bent end part A of the lead, two abutting points are positioned on a straight line which is perpendicular to the lead and the fuse at the same time, then the electrode is electrified for a preset time (the current size and the time length are determined by the fuse), the current flows through the electrode at the lead, tin on the lead is melted, and the lead and the fuse are welded together at the connecting part;
s108, the main turntable drives the main turntable rotating clamp to rotate to a laser welding station, and secondary welding is carried out on welding spots at the connecting positions of the two ends of the fuse wire and the lead bending end portion A through the laser welding machine with the well-adjusted focal length, distance and time, so that the welding reliability is ensured, and the generation of insufficient welding is avoided;
s109, the main turntable drives the main turntable rotating clamp to rotate to a lead wire pulling station, and the pulling mechanism pulls the lead wire up to a specified position;
s110, the main turntable drives the main turntable rotating clamp to rotate to an electrical property detection station, the assembled and welded semi-finished fuse is detected, and qualified semi-finished fuse is sorted out;
s111, the main turntable rotates the sorted qualified fuse semi-finished product to a shell sand filling installation station, the shell installation mechanism installs the shell on a base of the qualified fuse semi-finished product, and insulating filler is filled into the shell;
s112, the main turntable drives the main turntable rotating clamp to rotate to a base pressing installation station, and the base pressing mechanism presses the base of the fuse down to be matched with the housing lock hole to form a fuse finished product;
and S113, rotating the main turntable to a good product box-entering station, ejecting the fuse finished product into a packaging box by using an automatic discharging cylinder, and finishing the operation process.
As shown in fig. 2, the fuse manufactured by the manufacturing method of the embodiment includes a base 1, a housing 2, two lead wires 3, a fuse wire 4, and an insulating filler 5, where the housing 2 is connected to the base 4 through a locking hole and forms an accommodating cavity, the base 1 is provided with two through holes, the two lead wires 3 respectively pass through the through holes, the fuse wire 4 is placed in the accommodating cavity, two ends of the fuse wire 4 are respectively connected to end portions of the two lead wires 3 (the welding point 6 is formed by current welding and then the welding point 6 is laser welded), and the insulating filler 5 is filled in the accommodating cavity.
Variations and modifications to the above-described embodiments may also occur to those skilled in the art, which fall within the scope of the invention as disclosed and taught herein. Therefore, the present invention is not limited to the above-mentioned embodiments, and any obvious improvement, replacement or modification made by those skilled in the art based on the present invention is within the protection scope of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. A method of manufacturing a fuse, comprising the steps of:
firstly, two lead wires are arranged in two through holes of a base in a penetrating mode, then tin is adhered to the end portions A of the two lead wires, and finally the end portions A of the two lead wires are bent respectively;
placing two ends of the fuse wire on the bent end parts A of the two lead wires respectively, and then clamping the end parts of the fuse wire and the bent end parts A of the lead wires;
the positive electrode and the negative electrode of the resistance welding machine are respectively abutted against the bent end part A of the lead, two abutting points are positioned on a straight line which is perpendicular to the lead and the fuse at the same time, then the lead is electrified for a preset time by preset current, tin on the lead is melted, and the lead and the fuse are welded together at the connecting part;
and carrying out secondary welding on welding spots at the connection positions of the two ends of the fuse wire and the bent end part A of the lead by using a laser welding machine.
2. A method of manufacturing a fuse as set forth in claim 1, wherein said leads are straightened before being inserted through said through holes of said base.
3. A method of manufacturing a fuse according to claim 1, wherein an end portion a of each of the leads is flattened before the two leads are bonded with tin.
4. A method of manufacturing a fuse according to claim 1, wherein the lead is pulled up to a specified position after the secondary soldering is completed.
5. A method of manufacturing a fuse according to claim 4, wherein after the lead wire is pulled up, the assembled and soldered fuse semi-finished products are inspected to sort out acceptable fuse semi-finished products.
6. A method of manufacturing a fuse according to claim 5, wherein after sorting out acceptable fuse blanks, a housing is mounted on a base of the acceptable fuse blanks, and an insulating filler is poured into the housing.
7. A method of manufacturing a fuse as set forth in claim 6, wherein after the housing is mounted, said base is pressed down to fit with said locking hole of said housing to obtain a finished fuse.
8. A method of manufacturing a fuse according to claim 1, wherein the lead is a tin-clad copper lead.
9. A method of manufacturing a fuse as set forth in claim 1, wherein said lead is bent to form an "L" shaped structure.
10. A fuse obtained by the production method according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110044893.XA CN112885653B (en) | 2021-01-13 | 2021-01-13 | Fuse and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110044893.XA CN112885653B (en) | 2021-01-13 | 2021-01-13 | Fuse and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112885653A true CN112885653A (en) | 2021-06-01 |
| CN112885653B CN112885653B (en) | 2023-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110044893.XA Active CN112885653B (en) | 2021-01-13 | 2021-01-13 | Fuse and manufacturing method thereof |
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| CN (1) | CN112885653B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03297026A (en) * | 1990-04-13 | 1991-12-27 | Tokai Rika Co Ltd | Method for jointing fuse |
| CN101281838A (en) * | 2008-05-27 | 2008-10-08 | 东莞市贝特电子科技有限公司 | Vacuum cartridge fuse and process for manufacturing the same |
| CN102496536A (en) * | 2011-12-27 | 2012-06-13 | 东莞市贝特电子科技有限公司 | Explosion-proof fuse and method for manufacturing same |
| CN104227348A (en) * | 2014-08-22 | 2014-12-24 | Aem科技(苏州)股份有限公司 | Method of producing suspended fuse type fuse |
| CN104851755A (en) * | 2015-04-17 | 2015-08-19 | 东莞市贝特电子科技股份有限公司 | Fuse and production method thereof |
| CN108922828A (en) * | 2018-06-14 | 2018-11-30 | 苏州华德电子有限公司 | A kind of manufacturing method of shaped plastics fuse |
| CN208225830U (en) * | 2018-05-29 | 2018-12-11 | 东莞市贝特电子科技股份有限公司 | A kind of Thermal Cutoffs |
| CN208433361U (en) * | 2018-07-05 | 2019-01-25 | 东莞市贝特电子科技股份有限公司 | A kind of Novel fuse structure |
| CN110076455A (en) * | 2019-05-27 | 2019-08-02 | 东莞市贝特电子科技股份有限公司 | A kind of electronic component laser soldering device and method |
-
2021
- 2021-01-13 CN CN202110044893.XA patent/CN112885653B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03297026A (en) * | 1990-04-13 | 1991-12-27 | Tokai Rika Co Ltd | Method for jointing fuse |
| CN101281838A (en) * | 2008-05-27 | 2008-10-08 | 东莞市贝特电子科技有限公司 | Vacuum cartridge fuse and process for manufacturing the same |
| CN102496536A (en) * | 2011-12-27 | 2012-06-13 | 东莞市贝特电子科技有限公司 | Explosion-proof fuse and method for manufacturing same |
| CN104227348A (en) * | 2014-08-22 | 2014-12-24 | Aem科技(苏州)股份有限公司 | Method of producing suspended fuse type fuse |
| CN104851755A (en) * | 2015-04-17 | 2015-08-19 | 东莞市贝特电子科技股份有限公司 | Fuse and production method thereof |
| CN208225830U (en) * | 2018-05-29 | 2018-12-11 | 东莞市贝特电子科技股份有限公司 | A kind of Thermal Cutoffs |
| CN108922828A (en) * | 2018-06-14 | 2018-11-30 | 苏州华德电子有限公司 | A kind of manufacturing method of shaped plastics fuse |
| CN208433361U (en) * | 2018-07-05 | 2019-01-25 | 东莞市贝特电子科技股份有限公司 | A kind of Novel fuse structure |
| CN110076455A (en) * | 2019-05-27 | 2019-08-02 | 东莞市贝特电子科技股份有限公司 | A kind of electronic component laser soldering device and method |
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| Publication number | Publication date |
|---|---|
| CN112885653B (en) | 2023-01-06 |
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