CN112539685B - Rigid ignition part structure for detonator and production method - Google Patents
Rigid ignition part structure for detonator and production method Download PDFInfo
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- CN112539685B CN112539685B CN201910895849.2A CN201910895849A CN112539685B CN 112539685 B CN112539685 B CN 112539685B CN 201910895849 A CN201910895849 A CN 201910895849A CN 112539685 B CN112539685 B CN 112539685B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000003466 welding Methods 0.000 claims abstract description 91
- 238000001746 injection moulding Methods 0.000 claims abstract description 50
- 238000005452 bending Methods 0.000 claims abstract description 22
- 238000004080 punching Methods 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 238000009713 electroplating Methods 0.000 claims abstract description 7
- 238000007689 inspection Methods 0.000 claims abstract description 6
- 238000007747 plating Methods 0.000 claims description 27
- 230000003014 reinforcing effect Effects 0.000 claims description 15
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
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- 239000000463 material Substances 0.000 claims description 5
- 239000002313 adhesive film Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
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- 238000003825 pressing Methods 0.000 claims description 3
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- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 2
- 238000003860 storage Methods 0.000 abstract description 6
- 238000010924 continuous production Methods 0.000 abstract description 4
- 238000007711 solidification Methods 0.000 abstract description 3
- 230000008023 solidification Effects 0.000 abstract description 3
- 239000003292 glue Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 12
- 239000003814 drug Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 229940079593 drug Drugs 0.000 description 3
- 230000000977 initiatory effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
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- 238000004146 energy storage Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C19/00—Details of fuzes
- F42C19/08—Primers; Detonators
- F42C19/12—Primers; Detonators electric
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a rigid ignition part structure for a detonator and a production method thereof, wherein the structure comprises a fixing belt, a positioning hole, an electrode, a bending part arranged at the front end of the electrode, an electrode group formed between two adjacent electrodes, an injection molding block arranged above the electrode group, a bridge wire welded on the injection molding block in a plane, and an external matching sleeve-joint buckling cap, wherein the buckling cap and the injection molding block form interference fit; the production process sequentially comprises the processes of steel belt pre-punching, electroplating treatment, electrode group injection molding, structural part final punching, ultrasonic welding, bridge wire fusing, glue dispensing solidification, cap buckling, resistance detection, appearance inspection and the like, and the produced product has stable quality, is suitable for bridge wire production with different diameters, has good ignition consistency and long storage period, can realize automatic continuous production, is suitable for various detonator products containing ignition parts, is particularly suitable for digital electronic detonators, and can be subjected to chip intensive production together with an electronic control module in the digital electronic detonators.
Description
Technical Field
The invention relates to the technical field of initiating explosive device manufacturing, in particular to a rigid initiating explosive device structure for a detonator and a production method.
Background
The ignition part is used as an engine of the detonator, and has important significance for safe initiation. Conventional firearms are in the form of a primary product that is resilient or rigid. Compared with the elastic ignition piece, the rigid ignition piece is provided with an injection molding block at one end of the welding bridge wire, so that the two pin wire ends are relatively fixed, and the industrial mass production is facilitated, thereby gradually replacing the elastic ignition piece mainly produced in a manual operation mode.
However, the elastic ignition member and the rigid ignition member are not essentially different in the bridge wire welding mode, and the energy storage welding mode is adopted except that a small amount of elastic ignition members are manually soldered, namely, the bridge wire is pressed on the steel belt and then is welded by a large current, so that the welding parts of the bridge wire and the steel belt damage surface plating layers due to high temperature, the fresh metal surfaces formed around the welding points have higher reactivity, oxidation can occur, even chemical reaction can occur with ignition agents, and the phenomena of oxidation corrosion, bridge wire breakage, welding spot separation and the like are easy to occur in the storage period of the elastic ignition member or the rigid ignition member, so that the effective period of the product is shortened. The storage period of the existing products is only 12-18 months.
The prior art conditions are as follows: the invention patent CN 104344769A (ignition element and ignition element group) and CN104344767B (ignition element and ignition element group production method and the produced ignition element group) mainly comprise ignition bridge wires, a pair of bridge wire connecting pieces, a base and a cavity shell, wherein the ignition bridge wires, the pair of bridge wire connecting pieces and the base form an assembly body. The cavity shell comprises two parts, the first part of the cavity shell is formed by combining a rectangle with two semi-circles, an interference fit is formed by arranging a buckle and a buckle groove on the base, the second part of the cavity shell is in a barb shape, and a cavity is formed by the second part of the cavity shell and one end of the assembly part, which contains the bridge wire. When the ignition piece group is produced, ultrasonic welding is adopted during bridge wire welding, the vertical side face of the bridge wire connecting piece is clamped by a tool, stability of the bridge wire connecting piece during welding is guaranteed, a welding needle is used for carrying the bridge wire to weld on the pair of bridge wire connecting pieces, after the completion, the ultrasonic welding needle drives the bridge wire to break the bridge wire in the flying process, and then the bridge wire welding operation is continuously repeated.
The prior art has the defects that: the welding pressure can cause support shake during ultrasonic welding, so that insufficient welding strength is easily caused, and the support is kept stable by clamping the vertical surface of the support in the prior art, so that welding is facilitated. And the thickness of the bracket is generally thinner, so that the process requirement is higher during welding. The ultrasonic welding is to transmit the high-frequency vibration wave of the welding pin to the two metal surfaces to be welded, and simultaneously to pressurize the welding pin, so that the two closely contacted object surfaces are rubbed with each other to form fusion between the molecular layers, thereby forming a firm welding spot. In the prior art, after the bridge wire welding between two adjacent pins on the same injection molding block is completed, the welding pin can drive the bridge wire to break the bridge wire in the flying process, so that the bridge wire of the next ignition piece is welded, but the firmness of welding spots can be reduced when the bridge wire is broken, even the welding spots are separated, and the welding quality and the welding efficiency are influenced.
In the prior art, the tension bridge wire break has limitation, and only bridge wires below 18um break easily, so that the bridge wires with larger diameters are not broken easily, and the selection range of the diameters of the bridge wires is narrower during the production of the ignition parts. In addition, the energy matching of the medicine head system and the selection of ignition medicine are greatly limited.
The barb-shaped structure of the buckling cap in the prior art is not beneficial to the fixation of the medicine block, and the medicine loading quantity is large, so that certain safety risks and the waste of ignition medicines exist.
Disclosure of Invention
The invention aims to provide a rigid ignition member structure for a detonator and a production method thereof, which have stable product quality, are suitable for bridge wire production with different diameters, have good ignition consistency and long storage period, can realize automatic continuous production, are suitable for various detonator products containing ignition members, are particularly suitable for digital electronic detonators, and can be subjected to intensive production together with an electronic control module in the digital electronic detonator so as to solve the problems in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The production method of the rigid ignition member structure for the detonator comprises the following steps:
Step 1): pre-punching the steel belt: a common steel belt is selected for punching, so that a plurality of electrode groups are formed into a side-by-side structural member, one end of the structural member is provided with a fixed belt, the fixed belt is provided with equidistant positioning holes, the other end of the structural member is punched into electrodes separated from each other, and the front ends of the electrodes are subjected to 90-degree bending treatment;
step 2): electroplating: plating the steel strip by using a plating layer which has a low resistance value and is easy to fuse with a bridge wire material, wherein the plating layer comprises silver plating, tin plating, zinc plating and copper plating, or a mixture of a plurality of metal plating layers, and the thickness of the plating layer is 0-200 mu m;
Step 3): injection molding of the electrode group: injection molding is carried out below the bending part of the electrode group, the upper plane of the injection molding block is clung to the lower plane of the bending part, the injection molding block is cylindrical in shape, the diameter is just used for wrapping each side edge of the electrode, the height is proper, and the subsequent punching step is not influenced by a certain distance above the reinforcing rib of the electrode group;
Step 4): and (3) final punching of the structural part: punching and removing the reinforcing ribs on the structural member after injection molding is finished, and cutting off electrodes on the same side of the plurality of electrode groups at positions close to the base;
Step 5: ultrasonic welding: welding is carried out on the bending top of the electrode group by adopting an ultrasonic welding process, the length of the bridge wire is controlled by adjusting the movement track of the welding head and the moving step length of the injection molding block, or the welding strength is controlled by adjusting the pressure of the welding head, the pressing time of the welding head and the welding frequency;
Step 6: fusing bridge wires: applying current between two adjacent electrodes between two electrode groups, and fusing redundant bridge wires between the two adjacent electrodes of the two electrode groups by adjusting the current;
step 7): dispensing and solidifying: selecting an insulating adhesive which does not react with the bridge wire and the electrode material, synchronously performing adhesive dispensing operation on two welding spots welded by the bridge wire by using a double-head needle under the condition of ensuring that the welding spots are firmly contacted with the electrode, and rapidly soaking and expanding to form a layer of adhesive film, so that the firmness of the welding spots is improved;
Step 8): buckling cap: the cylindrical buckling cap and the injection molding block are in interference fit, buckling grooves are symmetrically distributed in the buckling cap, so that the tight combination of the injection molding block and the buckling cap is ensured, meanwhile, buckles are distributed at other symmetrical positions, the injection molding block is prevented from moving upwards, and the combination tightness of the injection molding block and the buckling cap is improved;
Step 9): resistance detection: the resistance detection equipment is fixed between two electrodes of the electrode group to detect resistance, so that the resistance value is in a normal range;
Step 10): appearance inspection: and the welding position of the bridge wire is amplified by a microscope, so that the welding condition of the bridge wire is detected, the welding quality of the bridge wire, the position of the exposed tail and the welding point of the bridge wire are checked, and the normal use of the bridge wire is ensured.
Further, in step 1), one electrode group is composed of two adjacent electrodes, and the thickness of the electrode group is between 0.1mm and 1mm.
Further, in step 1), in order to ensure the stability of the electrode set, a reinforcing rib is left at a proper position above the middle of the electrode set, and if the length of the electrode is shorter, the reinforcing rib is not required to be arranged.
Further, the outer side of the injection molding block in the step 3) is symmetrically provided with buckling grooves, and the buckling grooves and buckles arranged on the inner wall of the buckling cap form interference fit;
further, the bridge wire fusing mode in the step 6) is continuous twice welding, primary fusing or primary electrifying fusing of redundant bridge wires after the continuous multi-ignition bridge wire welding is finished.
The invention provides another technical scheme that: a rigid ignition member structure for detonator comprises a structural member punched by a common steel belt, wherein one end of the structural member is provided with a fixed belt, the fixed belt is provided with equidistant positioning holes, the other end of the structural member is punched into electrodes separated from each other, the front ends of the electrodes are bent to form bending parts by degree, an electrode group is formed between two adjacent electrodes, the electrode group is arranged on the structural member side by side, and a transverse reinforcing rib is arranged at a proper position on the middle of the electrode group; the upper plane of the injection molding block is clung to the lower plane of the bending part, an ultrasonic welding bridge wire is adopted on the bending part of the upper plane of the injection molding block, the outer part of the injection molding block is also matched and sleeved with a buckling cap, and interference fit is formed between the buckling cap and the injection molding block.
Compared with the prior art, the invention has the beneficial effects that:
The rigid ignition part structure for the detonator and the production method thereof provided by the invention comprise the processes of steel belt pre-punching, electroplating treatment, electrode group injection molding, structural part final punching, ultrasonic welding, bridge wire fusing, dispensing solidification, cap buckling, resistance detection, appearance inspection and the like, and the produced product has stable quality, is suitable for bridge wire production with different diameters, has good ignition consistency and long storage period, can realize automatic continuous production, is suitable for various detonator products containing ignition powder heads, is particularly suitable for digital electronic detonators, and can be subjected to patch intensive production together with an electronic control module in the digital electronic detonators.
Drawings
FIG. 1 is a schematic view of a steel strip preform according to the present invention;
FIG. 2 is a schematic view of an injection molding structure of an electrode assembly according to the present invention;
FIG. 3 is a schematic view of the final stamping structure of the structural member of the present invention;
FIG. 4 is a continuous welding diagram of the bridge wire fusing method of the present invention;
FIG. 5 is a schematic diagram showing a simultaneous fusing of bridge filaments according to the present invention;
FIG. 6 is a diagram of a two-shot welding of a bridge wire fusing mode according to the present invention;
FIG. 7 is a schematic diagram of a two-shot fuse of the bridge wire fusing method according to the present invention;
FIG. 8 is a schematic view of the installation of the snap cap of the present invention;
Fig. 9 is a cross-sectional view of the buckle cap of the present invention.
In the figure: 1 an electrode group; 2 structural members; 3, fixing a belt; 4, positioning holes; 5 electrodes; 6, reinforcing ribs; 7, injection molding; 8, buckling the cap; 9 bridge wires; 10 bending parts.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-9, in an embodiment of the present invention: the rigid ignition part structure for the detonator comprises a structural part 2 which is punched by a common steel belt, wherein one end of the structural part 2 is provided with a fixed belt 3, the fixed belt 3 is provided with equidistant positioning holes 4, the other end of the structural part 2 is punched into mutually separated electrodes 5, the front ends of the electrodes 5 are bent by 90 degrees to form bending parts 10, an electrode group 1 is formed between two adjacent electrodes 5, the electrode group 1 is arranged on the structural part 2 side by side, and a transverse reinforcing rib 6 is further arranged at a proper position on the middle of the electrode group 1; the upper plane of the injection molding block 7 is clung to the lower plane of the bending part 10, an ultrasonic welding bridge wire 9 is adopted on the bending part 10 on the upper plane of the injection molding block 7, the outer part of the injection molding block 7 is also matched and sleeved with a buckling cap 8, and interference fit is formed between the buckling cap 8 and the injection molding block 7.
In order to further better explain the invention, the invention also provides a production method of the rigid ignition member structure for the detonator, which comprises the following steps:
the first step: referring to fig. 1, the steel strip is pre-punched: the common steel strip is selected for punching, so that a plurality of side-by-side structural members 2 of the electrode groups 1 are formed, and the structure is specifically as follows: one end of the structural member 2 is provided with a fixing belt 3, and the fixing belt 3 is provided with equidistant positioning holes 4; the other end is punched into electrodes 5 separated from each other, and the front end of the electrode 5 is subjected to 90-degree bending treatment at a proper distance to form a bending part 10; in order to ensure the stability of the electrode group 1, a reinforcing rib 6 is left at a proper position on the middle of the electrode group 1, and if the length of the electrode 5 is shorter, the reinforcing rib 6 is not required to be arranged; in addition, in practical application, the structure 2 after pre-punching can be cut into a certain length, each steel sheet comprises a certain number of electrode groups 1, the specific number is determined according to processing equipment, 10 resistors are used as a group in fig. 1, and the thickness of the electrode groups 1 is between 0.1mm and 1 mm;
And a second step of: electroplating: because the steel belt contains metals such as iron and the like, the resistance value is higher, and a plating layer which is lower in resistance value and is easy to fuse with the material of the bridge wire 9 is selected to carry out electroplating treatment on the steel belt, the resistance value of the surface layer of the structural member 2 can be reduced, the welding firmness is improved, silver plating, tin plating, zinc plating, copper plating and the like can be selected as the plating layer, or the mixture of a plurality of metal plating layers is adopted, and the thickness of the plating layer can be 0-200 mu m;
And a third step of: referring to fig. 2, an electrode set 1 is injection molded: injection molding is carried out below the bending part of the electrode group 1 so as to ensure the stability of the subsequent welding operation; when injection molding is performed, the upper plane of the injection molding block 7 is tightly attached to the lower plane of the bending part 10, so that the effect of supporting the bending part can be achieved, the welding pressure during ultrasonic welding is born, and the stability of welding is ensured; the injection molding block 7 is cylindrical in shape, the diameter is just enough to cover each side edge of the electrode, the height is proper, and the subsequent punching step is not influenced by a certain distance above the reinforcing ribs 6 on the electrode group 1; the clamping grooves are symmetrically distributed on the outer side of the injection molding block 7 and can form interference fit with the clamping buckles arranged on the inner wall of the buckling cap 8, so that the ignition agent is always positioned in the ignition cavity, the phenomenon of combustion caused by friction action after the ignition agent flows to the joint is avoided, and the safety of the rigid ignition piece in the links of production, transportation, use and the like is ensured;
Fourth step: referring to fig. 3, structure 2 is final stamped: after injection molding is finished, punching and removing the reinforcing ribs 6 on the structural member 2, cutting the same-side electrodes 5 of the electrode groups 1 at positions close to the base, and ensuring that a loop can be formed between two adjacent electrodes 5 after current is applied to prepare for fusing of the subsequent bridge wires 9;
Fifth step: ultrasonic welding: welding is carried out on the bending top of the electrode group 1 by adopting an ultrasonic welding process, the length of the bridge wire 9 is controlled by adjusting the movement track of the welding head and the moving step length of the injection block 7, or the welding strength is controlled by adjusting the pressure of the welding head, the pressing time of the welding head and the welding frequency;
Sixth step: the bridge wire 9 fuses: applying current between two adjacent electrodes 5 between two electrode groups 1, and fusing the redundant bridge wires 9 between the two adjacent electrodes 5 of the two electrode groups 1 by adjusting the current, wherein the fusing mode can be continuous twice welding and primary fusing, or fusing the redundant bridge wires 9 by one-time electrifying after the continuous multiple ignition bridge wires 9 are welded; specifically, please refer to fig. 4-5 for a first mode: continuously welding and fusing the images; fig. 6-7 are modes two: single shot welding and single shot fusing;
Seventh step: dispensing and solidifying: the ultrasonic welding strength is limited, an insulating adhesive which is non-reactive with the materials of the bridge wire 9 and the electrode 5 is selected, under the condition that the contact between welding spots and the electrode 5 is ensured to be firm, the two welding spots welded by the bridge wire 9 are synchronously subjected to adhesive dispensing operation by using double-head needles and quickly soaked and spread to form a layer of adhesive film, so that the firmness of the welding spots is improved, (the firmness of the bridge wire 9 is further ensured, and the adhesive film can be placed before current fusing in the step);
Eighth step: referring to fig. 8-9, for protecting the bridge wire 9, an interference fit is designed between the cylindrical buckling cap 8 and the injection molding block 7, so that the cylindrical structure can moderately reduce the drug loading amount and moderately increase the stability of the drug block in the buckling cap 8; the buckling grooves are symmetrically distributed in the buckling cap 8, so that the tight combination of the injection molding block 7 and the buckling cap 8 is ensured, and meanwhile, the buckles are distributed at other symmetrical positions and are used for ensuring that the injection molding block 7 cannot move upwards, the combination tightness of the injection molding block 7 and the buckling cap 8 is improved, and displacement cannot occur;
Ninth step: resistance detection: the resistance detection equipment is fixed between the two electrodes 5 of the electrode group 1 for resistance detection, so that the resistance value is in a normal range;
Tenth step: appearance inspection: the welding position of the bridge wire 9 is amplified by a microscope, the welding condition of the bridge wire 9 is detected, the welding quality of the bridge wire 9, the position of the exposed end and the exposed tail of the bridge wire 9 and the welding point are checked, and the bridge wire 9 can be ensured to be normally used.
To sum up: the rigid ignition part structure for the detonator and the production method provided by the invention comprise the processes of steel belt pre-punching, electroplating treatment, injection molding of an electrode group 1, final punching of a structural part 2, ultrasonic welding, fusing of a bridge wire 9, dispensing solidification, buckling of a cap 8, resistance detection, appearance inspection and the like, and the produced product has stable quality, is suitable for the production of bridge wires 9 with different diameters, has good ignition consistency and long storage period, can realize automatic continuous production, is suitable for various detonator products containing ignition powder heads, is particularly suitable for digital electronic detonators, and can be subjected to patch intensive production together with an electronic control module in the digital electronic detonators.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should be covered by the protection scope of the present invention by making equivalents and modifications to the technical solution and the inventive concept thereof.
Claims (2)
1. The production method of the rigid ignition member structure for the detonator is characterized by comprising the following steps of:
step 1): pre-punching the steel belt: a common steel belt is selected for punching, so that a plurality of structural members (2) with electrode groups (1) arranged side by side are formed, one end of each structural member (2) is provided with a fixed belt (3), the fixed belt (3) is provided with equidistant positioning holes (4), the other end of each structural member (2) is punched and cut into electrodes (5) separated from each other, and the front ends of the electrodes (5) are subjected to 90-degree bending treatment;
Step 2): electroplating: plating the steel strip by using a plating layer which has a low resistance value and is easy to fuse with a bridge wire material, wherein the plating layer comprises silver plating, tin plating, zinc plating and copper plating, or a mixture of a plurality of metal plating layers, and the thickness of the plating layer is 0-200 mu m;
Step 3): injection molding of the electrode group (1): injection molding is carried out below the bending position of the electrode group (1), the upper plane of the injection molding block (7) is clung to the lower plane of the bending part, the injection molding block (7) is cylindrical, the diameter is just used for wrapping each side edge of the electrode, the height is proper, and the subsequent punching step is not influenced by a certain distance above the reinforcing rib (6) of the electrode group (1);
Step 4): and (3) final punching of the structural part (2): punching and removing the reinforcing ribs (6) on the structural member (2) after injection molding is finished, and cutting the same side electrodes (5) of the plurality of electrode groups (1) at positions close to the base;
Step 5): ultrasonic welding: welding is carried out on the bending top of the electrode group (1) by adopting an ultrasonic welding process, the length of a bridge wire (9) is controlled by adjusting the movement track of a welding head and the moving step length of an injection molding block (7), or the welding strength is controlled by adjusting the pressure of the welding head, the pressing time of the welding head and the welding frequency;
Step 6): and the bridge wire (9) is fused: applying current between two adjacent electrodes (5) between two electrode groups (1), and fusing redundant bridge wires (9) between the two adjacent electrodes (5) of the two electrode groups (1) by adjusting the current;
step 7): dispensing and solidifying: selecting an insulating adhesive which is non-reactive with the materials of the bridge wire (9) and the electrode (5), and synchronously performing adhesive dispensing operation on two welding spots welded by the bridge wire (9) by using double-ended needles under the condition of ensuring that the welding spots are firmly contacted with the electrode (5), and rapidly soaking and expanding to form a layer of adhesive film, so that the firmness of the welding spots is improved;
Step 8): buckling cap (8): the cylindrical buckling cap (8) and the injection molding block (7) are arranged to form interference fit, buckling grooves are symmetrically distributed in the buckling cap (8), the tight combination of the injection molding block (7) and the buckling cap (8) is guaranteed, buckles are distributed at other symmetrical positions, the injection molding block (7) cannot move upwards, and the combination tightness of the injection molding block (7) and the buckling cap (8) is improved;
Step 9): resistance detection: the resistance detection equipment is fixed between two electrodes (5) of the electrode group (1) to detect resistance, so that the resistance is in a normal range;
step 10): appearance inspection: the welding position of the bridge wire (9) is amplified through a microscope, the welding condition of the bridge wire (9) is detected, the welding quality of the bridge wire (9) and the positions of the exposed ends and the welding points of the bridge wire (9) are checked, and the bridge wire (9) can be ensured to be used normally; in the step 1), one electrode group (1) consists of two adjacent electrodes (5), and the thickness of the electrode group (1) is 0.1-1 mm; in the step 1), in order to ensure the stability of the electrode group (1), a reinforcing rib (6) is left at a proper position on the middle of the electrode group (1), and if the length of the electrode (5) is shorter, the reinforcing rib (6) is not required to be arranged; the outer side of the injection molding block (7) in the step 3) is symmetrically provided with buckling grooves which form interference fit with buckles arranged on the inner wall of the buckling cap (8)
2. The method for producing a rigid ignition member structure for detonator as claimed in claim 1, wherein the fusing mode of the bridge wire (9) in the step 6) is two continuous welds, one-time fusing, or one-time energizing after the welding of the continuous multi-ignition bridge wire (9) is completed to fuse the redundant bridge wire (9).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910895849.2A CN112539685B (en) | 2019-09-21 | 2019-09-21 | Rigid ignition part structure for detonator and production method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910895849.2A CN112539685B (en) | 2019-09-21 | 2019-09-21 | Rigid ignition part structure for detonator and production method |
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| CN112539685A CN112539685A (en) | 2021-03-23 |
| CN112539685B true CN112539685B (en) | 2024-07-30 |
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| CN203479184U (en) * | 2013-08-08 | 2014-03-12 | 北京北方邦杰科技发展有限公司 | Igniting element and igniting element group |
| CN104344767B (en) * | 2013-08-08 | 2018-06-08 | 北京铱钵隆芯科技有限责任公司 | Production method and the part group obtained of igniting for part and the part group of igniting of igniting |
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