CN117663925A - Medicinal cup type bridge wire ignition resistor and manufacturing process thereof - Google Patents
Medicinal cup type bridge wire ignition resistor and manufacturing process thereof Download PDFInfo
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- CN117663925A CN117663925A CN202211072252.6A CN202211072252A CN117663925A CN 117663925 A CN117663925 A CN 117663925A CN 202211072252 A CN202211072252 A CN 202211072252A CN 117663925 A CN117663925 A CN 117663925A
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- bridge wire
- bridge
- substrate
- cup type
- cover plate
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 239000003814 drug Substances 0.000 claims abstract description 99
- 239000000758 substrate Substances 0.000 claims abstract description 74
- 238000003466 welding Methods 0.000 claims description 36
- 229940079593 drug Drugs 0.000 claims description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 claims description 9
- 238000005553 drilling Methods 0.000 claims description 9
- 229910000679 solder Inorganic materials 0.000 claims description 9
- 239000011265 semifinished product Substances 0.000 claims description 8
- 239000011889 copper foil Substances 0.000 claims description 7
- 238000005530 etching Methods 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000007747 plating Methods 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 5
- 239000012811 non-conductive material Substances 0.000 claims description 5
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 240000004282 Grewia occidentalis Species 0.000 claims description 2
- MSNOMDLPLDYDME-UHFFFAOYSA-N gold nickel Chemical compound [Ni].[Au] MSNOMDLPLDYDME-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 7
- 230000035939 shock Effects 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 7
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000001259 photo etching Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000000703 anti-shock Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Details Of Resistors (AREA)
Abstract
The invention discloses a medicine cup type bridge wire ignition resistor and a manufacturing process thereof, wherein the medicine cup type bridge wire ignition resistor comprises a bridge wire substrate, a cover plate which is pressed and fixed on the bridge wire substrate, and bonding pads which are arranged on the periphery of two ends of the cover plate and the bridge wire substrate; and the bridge wire is welded and fixed on the inner side surface of the bridge wire substrate, a bridge cup hole for avoiding the bridge wire is formed in the position, corresponding to the bridge wire, of the cover plate, and the bridge wire is electrically connected with the bonding pad. The invention is formed into the medicine cup type bridge wire ignition resistor by arranging the medicine cup structure, and compared with other traditional bridge wires, the medicine cup type bridge wire ignition resistor has the advantage that the volume is smaller by more than 80 percent; the bridge wire is arranged in the medicine cup and cannot be easily damaged; according to the invention, the medicine cup is filled with the ignition medicine, the medicine is wrapped in the medicine cup, the medicine head is not easy to damage, and the shock resistance, the safety and the reliability are improved.
Description
Technical Field
The invention relates to the technical field of electronic detonator ignition heads, in particular to a medicine cup type bridge wire ignition resistor and a manufacturing process thereof.
Background
The traditional electric detonator ignition head bridge wire resistor has two welding modes: firstly, directly welding a bridge wire to a detonator leg wire to form a bridge wire resistor; and secondly, welding the bridge wire to the metal connecting piece, and then welding the metal connecting piece to the detonator leg wire. The bridge wire resistor formed by the two welding modes has no special protection structure, and the bridge wire are easy to damage, especially under the vibration condition, thereby influencing the shock resistance, the safety and the reliability of the electric detonator.
Disclosure of Invention
In order to overcome the defects, the invention provides the medicine cup type bridge wire ignition resistor and the manufacturing process thereof, and the medicine cup is arranged and the bridge wire is arranged in the medicine cup type bridge wire ignition resistor, so that the bridge wire is prevented from being easily damaged, and the shock resistance, the safety and the reliability of the electric detonator are improved.
The technical scheme adopted by the invention for solving the technical problems is as follows: a medicinal cup type bridge wire ignition resistor comprises a bridge wire substrate, a cover plate fixed on the bridge wire substrate in a pressing manner, and bonding pads arranged on the peripheries of two ends of the cover plate and the bridge wire substrate; and the bridge wire is welded and fixed on the inner side surface of the bridge wire substrate, a bridge cup hole for avoiding the bridge wire is formed in the position, corresponding to the bridge wire, of the cover plate, and the bridge wire is electrically connected with the bonding pad.
As a further improvement of the invention, the bridge wire substrate is formed by welding bridge wires on one side surface of a layer of double-sided copper-clad substrate.
As a further improvement of the invention, the bridge wire is curved in an arc shape towards the bridge cup hole.
As a further improvement of the invention, the bridge wire substrate is formed by laminating two layers of double-sided copper-clad substrates, the bridge wires are welded and fixed on one layer of double-sided copper-clad substrate close to the cover plate, and through holes are formed in the layer of double-sided copper-clad substrate corresponding to the positions of the bridge wires.
As a further improvement of the invention, the bridge wire is curved in an arc shape towards the bridge cup hole.
As a further improvement of the invention, the bridge wire is curved in an arc shape back to the bridge cup hole.
The invention also provides a manufacturing process of the medicine cup type bridge wire ignition resistor, which comprises the following steps:
s1, selecting a non-conductive material as a substrate, and respectively attaching a layer of copper foil on two opposite side surfaces of the substrate to form a copper-clad substrate;
s2, drilling a first positioning hole at the peripheral position of the copper-clad substrate;
s3, etching a plurality of pairs of bridge wire welding surface patterns on one side surface of the copper-clad substrate, and respectively plating a nickel-gold layer or a nickel-palladium-gold layer at the positions of two corresponding bridge wire welding points of each pair of bridge wire welding surface patterns;
s4, cutting a plurality of bridge wires with required sizes, and respectively welding two ends of each bridge wire on two bridge wire welding points of each pair of bridge wire welding surface patterns;
s5, spot-coating solder paste on the bridge wire welding points welded with the bridge wires by a spot-gluing machine, and melting the solder paste through a reflow oven to ensure that the solder paste wraps the bridge wire welding points, so as to manufacture a bridge wire substrate containing a plurality of bridge wire units;
s6, taking another copper-clad substrate obtained in the step S1, drilling a second positioning hole at the peripheral position of the copper-clad substrate corresponding to the first positioning hole, simultaneously drilling a plurality of medicine cup holes at the positions corresponding to the pattern positions of the plurality of pairs of bridge wire welding surfaces on one side surface, and etching away redundant copper foil to form a cover plate containing a plurality of cover plate units;
s7, glue is coated on the bottom of the cover plate, the cover plate is accurately sleeved on the bridge wire substrate by utilizing the first positioning holes and the second positioning holes, then the cover plate and the bridge wire substrate are pressed and fixed into a whole, and each bridge wire unit and the cover plate unit correspondingly form a first medicine cup type bridge wire ignition resistor unit;
s8, slotting at two ends corresponding to each first medicine cup type bridge wire ignition resistor unit, and plating copper in the slots to form bonding pads, so as to obtain a semi-finished product containing a plurality of medicine cup type bridge wire ignition resistor units;
s9, cutting each unit of the semi-finished product into a single piece;
s10, checking and packaging to obtain a plurality of single-piece drug cup type bridge wire ignition resistors.
As a further improvement of the present invention, in the step S1, the non-conductive material is ceramic or glass fiber cloth.
As a further improvement of the present invention, in the step S2, the copper-clad substrate is a square plate, and the first positioning hole is disposed at a four-corner position.
As a further improvement of the present invention, in the step S9, the semi-finished product is cut into individual pieces by using a chip cutting device.
The beneficial effects of the invention are as follows: the invention is formed into the medicine cup type bridge wire ignition resistor by arranging the medicine cup structure, and compared with other traditional bridge wires, the medicine cup type bridge wire ignition resistor has the advantage that the volume is smaller by more than 80 percent; the bridge wire is arranged in the medicine cup and cannot be easily damaged; the invention adopts the chip-level wire bonding machine, the wire bonding precision is high, the bridge wire length can be controlled at an error of three thousandths, and the precision is improved by more than 10 times compared with the traditional bridge wire; according to the invention, the medicine cup is filled with the ignition medicine, the medicine is wrapped in the medicine cup, and the medicine head is not easy to damage, so that the shock resistance, the safety and the reliability are improved; the invention adopts the circuit photoetching technology, can realize industrial production, has high consistency, and can not cause uneven quality of front and rear products due to equipment abrasion during traditional bridge wire manufacturing.
Drawings
FIG. 1 is a schematic diagram of the structure of an embodiment 1 of the present invention;
FIG. 2 is a schematic structural diagram of embodiment 2 of the present invention;
FIG. 3 is a schematic structural diagram of embodiment 3 of the present invention;
FIG. 4 is a schematic structural diagram of embodiment 4 of the present invention;
FIG. 5 is a top view of embodiment 1 of the present invention;
fig. 6 is a bottom view of embodiment 1 of the present invention.
The following description is made with reference to the accompanying drawings:
1. a bridge wire substrate; 11. bridge wires; 12. a through hole; 2. a cover plate; 21. bridge cup holes; 3. and a bonding pad.
Detailed Description
Several preferred embodiments of the present invention will be described in detail below with reference to the attached drawings.
Example 1
Referring to fig. 1, a schematic diagram of a drug cup type bridge wire ignition resistor according to the present invention includes a bridge wire substrate 1, a cover plate 2 pressed and fixed on the bridge wire substrate, and bonding pads 3 disposed on the outer peripheries of both ends of the cover plate and the bridge wire substrate. The bridge wire substrate is welded and fixed with a bridge wire 11 on the inner side surface, a bridge cup hole 21 for avoiding the bridge wire is formed in the position, corresponding to the bridge wire, of the cover plate, the bridge wire is bent in an arc shape towards the direction of the medicine cup hole 21, and meanwhile, the bridge wire 11 is electrically connected with the bonding pad 3. When the anti-shock medicine cup is used, ignition medicine can be filled in the medicine cup hole, so that the medicine cup wraps the medicine inside the medicine cup, the medicine head is not easy to damage, and shock resistance, safety and reliability are improved.
In this embodiment, the shape of the medicine cup can be customized according to the needs, such as oval, circular, referring to fig. 5 for a top view of the ignition resistor and fig. 6 for a bottom view.
The manufacturing process of the medicine cup type bridge wire ignition resistor comprises the following steps:
s1, selecting ceramic or glass fiber cloth which is a non-conductive material as a substrate, and respectively attaching a layer of copper foil on two opposite side surfaces of the substrate to form a copper-clad substrate, preferably a square plate;
s2, drilling first positioning holes at the peripheral positions of the copper-clad substrate, namely four corners;
s3, etching a plurality of pairs of bridge wire welding surface patterns (generally circular, namely etching copper foils except for welding points) on one side surface of the copper-clad substrate, and respectively plating nickel layers or nickel-palladium-gold layers at positions of two corresponding bridge wire welding points of each pair of bridge wire welding surface patterns;
s4, cutting a plurality of bridge wires with required sizes, and respectively welding two ends of each bridge wire on two bridge wire welding points of each pair of bridge wire welding surface patterns;
s5, spot-coating solder paste on the bridge wire welding points welded with the bridge wires by using a glue dispenser, melting the solder paste through a reflow soldering furnace, and enabling the solder paste to wrap the bridge wire welding points to manufacture a bridge wire substrate containing a plurality of bridge wire units, wherein the bridge wire substrate can be manufactured by gluing and solidifying the bridge wire welding points by using the glue dispenser;
s6, taking another copper-clad substrate obtained in the step S1, drilling a second positioning hole at the peripheral position of the copper-clad substrate corresponding to the first positioning hole, simultaneously drilling a plurality of medicine cup holes (the medicine cup holes are through holes) at the positions corresponding to the pattern of the plurality of pairs of bridge wire welding surfaces on one side surface, and etching away redundant copper foil to form a cover plate containing a plurality of cover plate units;
s7, glue is coated on the bottom of the cover plate, the cover plate is accurately sleeved on the bridge wire substrate by utilizing the first positioning holes and the second positioning holes, then the cover plate and the bridge wire substrate are pressed and fixed into a whole, and each bridge wire unit and the cover plate unit correspondingly form a first medicine cup type bridge wire ignition resistor unit;
s8, slotting at two ends corresponding to each first medicine cup type bridge wire ignition resistor unit, and plating copper in the slots to form bonding pads, so as to obtain a semi-finished product containing a plurality of medicine cup type bridge wire ignition resistor units;
s9, cutting each unit of the semi-finished product into a single unit by adopting chip cutting equipment;
s10, checking and packaging to obtain the plurality of single-particle drug cup type bridge wire ignition resistors.
Example 2
Referring to fig. 2, another schematic structure of a drug cup type bridge wire ignition resistor according to the present invention is shown in the following description, and the main structure is the same as that of embodiment 1, but the difference between this embodiment and embodiment 1 is that: the bridge wire substrate 1 of the embodiment is formed by laminating two layers of double-sided copper-clad substrates, the bridge wires are welded and fixed on one layer of double-sided copper-clad substrate close to the cover plate 2, and through holes are formed in the layer of double-sided copper-clad substrate corresponding to the positions of the bridge wires.
Likewise, when the medicine cup type bridge wire ignition resistor is used, ignition medicine can be filled in the medicine cup holes, so that the medicine cup wraps the medicine inside the medicine cup, the medicine head is not easy to damage, and the shock resistance, the safety and the reliability are improved.
The manufacturing process of the drug cup type bridge wire ignition resistor is basically the same as that of the embodiment 1, except that after the step S2, another copper-clad substrate is manufactured, meanwhile, a through hole is manufactured on the copper-clad substrate, then the bridge wire is welded on the copper-clad substrate, and meanwhile, in the step S7, the two copper-clad substrates and the cover plate are jointly pressed and fixed into a whole, so that the drug cup type bridge wire ignition resistor is formed.
Example 3
Referring to fig. 3, a third structural schematic diagram of a drug cup type bridge wire ignition resistor according to the present invention is shown, in which two layers of double-sided copper-clad substrates are laminated on a bridge wire substrate 1 in this embodiment, a bridge wire 11 is welded and fixed on a layer of double-sided copper-clad substrate close to a cover plate 2, and a through hole 12 is formed on the layer of double-sided copper-clad substrate corresponding to the bridge wire 11. The difference between this embodiment and embodiment 2 is that the bridge wire in embodiment 2 is curved in an arc shape away from the bridge cup hole 21.
Likewise, when the medicine cup type bridge wire ignition resistor is used, ignition medicine can be filled in the medicine cup holes, so that the medicine cup wraps the medicine inside the medicine cup, the medicine head is not easy to damage, and the shock resistance, the safety and the reliability are improved.
The manufacturing process of the drug cup type bridge wire ignition resistor of the embodiment is completely the same as that of the embodiment 2, except for the complete direction of the bridge wire.
Example 4
Referring to fig. 4, a fourth schematic diagram of a drug cup type bridge wire ignition resistor according to the present invention is shown, and the structure of this embodiment is substantially the same as that of embodiment 3, except that the structure of the bonding pad is different.
Likewise, when the medicine cup type bridge wire ignition resistor is used, ignition medicine can be filled in the medicine cup holes, so that the medicine cup wraps the medicine inside the medicine cup, the medicine head is not easy to damage, and the shock resistance, the safety and the reliability are improved.
The manufacturing process of the drug cup type bridge wire ignition resistor in the embodiment is completely the same as that in embodiment 3, except for the shape of the bonding pad.
Therefore, the invention is formed into the medicine cup type bridge wire ignition resistor by arranging the medicine cup structure, and compared with other traditional bridge wires, the volume of the medicine cup type bridge wire ignition resistor is more than 80 percent smaller; the bridge wire is arranged in the medicine cup and cannot be easily damaged; the invention adopts the chip-level wire bonding machine, the wire bonding precision is high, the bridge wire length can be controlled at an error of three thousandths, and the precision is improved by more than 10 times compared with the traditional bridge wire; according to the invention, the medicine cup is filled with the ignition medicine, the medicine is wrapped in the medicine cup, and the medicine head is not easy to damage, so that the shock resistance, the safety and the reliability are improved; the invention adopts the circuit photoetching technology, can realize industrial production, has high consistency, and can not cause uneven quality of front and rear products due to equipment abrasion during traditional bridge wire manufacturing.
In the above description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The foregoing description is only of a preferred embodiment of the invention, which can be practiced in many other ways than as described herein, so that the invention is not limited to the specific implementations disclosed above. While the foregoing disclosure has been described with reference to certain embodiments, it will be understood by those skilled in the art that various changes and modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. Any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention without departing from the technical solution of the present invention still falls within the scope of the technical solution of the present invention.
Claims (10)
1. A medicine cup type bridge wire ignition resistor is characterized in that: the bonding pad comprises a bridge wire substrate, a cover plate and bonding pads, wherein the cover plate is fixedly pressed on the bridge wire substrate, and the bonding pads are arranged on the peripheries of two ends of the cover plate and the bridge wire substrate; and the bridge wire is welded and fixed on the inner side surface of the bridge wire substrate, a bridge cup hole for avoiding the bridge wire is formed in the position, corresponding to the bridge wire, of the cover plate, and the bridge wire is electrically connected with the bonding pad.
2. The drug cup type bridge wire ignition resistor of claim 1, wherein: the bridge wire substrate is formed by welding bridge wires on one side surface of a layer of double-sided copper-clad substrate.
3. The drug cup type bridge wire ignition resistor of claim 2, wherein: the bridge wire is curved in an arc shape towards the bridge cup hole.
4. The drug cup type bridge wire ignition resistor of claim 1, wherein: the bridge wire substrate is formed by laminating two layers of double-sided copper-clad substrates, the bridge wire is welded and fixed on one layer of double-sided copper-clad substrate close to the cover plate, and through holes are formed in the layer of double-sided copper-clad substrate corresponding to the bridge wire positions.
5. The drug cup type bridge wire ignition resistor of claim 4, wherein: the bridge wire is curved in an arc shape towards the bridge cup hole.
6. The drug cup type bridge wire ignition resistor of claim 4, wherein: the bridge wire is bent in an arc shape in the direction opposite to the bridge cup hole.
7. The process for manufacturing the drug cup type bridge wire ignition resistor according to claim 1, which is characterized by comprising the following steps:
s1, selecting a non-conductive material as a substrate, and respectively attaching a layer of copper foil on two opposite side surfaces of the substrate to form a copper-clad substrate;
s2, drilling a first positioning hole at the peripheral position of the copper-clad substrate;
s3, etching a plurality of pairs of bridge wire welding surface patterns on one side surface of the copper-clad substrate, and respectively plating a nickel-gold layer or a nickel-palladium-gold layer at the positions of two corresponding bridge wire welding points of each pair of bridge wire welding surface patterns;
s4, cutting a plurality of bridge wires with required sizes, and respectively welding two ends of each bridge wire on two bridge wire welding points of each pair of bridge wire welding surface patterns;
s5, spot-coating solder paste on the bridge wire welding points welded with the bridge wires by a spot-gluing machine, and melting the solder paste through a reflow oven to ensure that the solder paste wraps the bridge wire welding points, so as to manufacture a bridge wire substrate containing a plurality of bridge wire units;
s6, taking another copper-clad substrate obtained in the step S1, drilling a second positioning hole at the peripheral position of the copper-clad substrate corresponding to the first positioning hole, simultaneously drilling a plurality of medicine cup holes at the positions corresponding to the pattern positions of the plurality of pairs of bridge wire welding surfaces on one side surface, and etching away redundant copper foil to form a cover plate containing a plurality of cover plate units;
s7, glue is coated on the bottom of the cover plate, the cover plate is accurately sleeved on the bridge wire substrate by utilizing the first positioning holes and the second positioning holes, then the cover plate and the bridge wire substrate are pressed and fixed into a whole, and each bridge wire unit and the cover plate unit correspondingly form a first medicine cup type bridge wire ignition resistor unit;
s8, slotting at two ends corresponding to each first medicine cup type bridge wire ignition resistor unit, and plating copper in the slots to form bonding pads, so as to obtain a semi-finished product containing a plurality of medicine cup type bridge wire ignition resistor units;
s9, cutting each unit of the semi-finished product into a single piece;
s10, checking and packaging to obtain a plurality of single-piece drug cup type bridge wire ignition resistors.
8. The process for manufacturing the drug cup type bridge wire ignition resistor according to claim 7, wherein the process comprises the following steps of: in the step S1, the non-conductive material is ceramic or glass fiber cloth.
9. The process for manufacturing the drug cup type bridge wire ignition resistor according to claim 7, wherein the process comprises the following steps of: in the step S2, the copper-clad substrate is a square plate, and the first positioning hole is provided with a four-corner position.
10. The process for manufacturing the drug cup type bridge wire ignition resistor according to claim 7, wherein the process comprises the following steps of: in the step S9, a chip cutting device is used to cut the semi-finished product into single pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211072252.6A CN117663925A (en) | 2022-09-01 | 2022-09-01 | Medicinal cup type bridge wire ignition resistor and manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211072252.6A CN117663925A (en) | 2022-09-01 | 2022-09-01 | Medicinal cup type bridge wire ignition resistor and manufacturing process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117663925A true CN117663925A (en) | 2024-03-08 |
Family
ID=90077711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211072252.6A Pending CN117663925A (en) | 2022-09-01 | 2022-09-01 | Medicinal cup type bridge wire ignition resistor and manufacturing process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117663925A (en) |
-
2022
- 2022-09-01 CN CN202211072252.6A patent/CN117663925A/en active Pending
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