CN1365531A - Method and apparatus for making spark plug - Google Patents
Method and apparatus for making spark plug Download PDFInfo
- Publication number
- CN1365531A CN1365531A CN00810982A CN00810982A CN1365531A CN 1365531 A CN1365531 A CN 1365531A CN 00810982 A CN00810982 A CN 00810982A CN 00810982 A CN00810982 A CN 00810982A CN 1365531 A CN1365531 A CN 1365531A
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- Prior art keywords
- bonding jumper
- contre electrode
- partition
- electrode
- ignition terminal
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T21/00—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs
- H01T21/06—Adjustment of spark gaps
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Spark Plugs (AREA)
Abstract
This invention relates to a method and apparatus for making a spark plug, in particular, for making a high-performance spark plug having a center electrode having a firing end made of Pt, Ir, Hr, Pd, Re, Os, Ru or alloy thereof, with its firing end diameter of about 0.3-1.0 mm. One of the embodiments provides a method comprising the steps of: extending a metal strip from an end of the metal shell; positioning a spacer above a firing end of the center electrode; preliminarily bending the metal strip toward the spacer so as to form an arc portion in the metal strip; and then precisely forming a gap-distance between the metal strip and the firing end of the center electrode by applying a force to the metal strip. The method may further include a step of measuring the position of the firing end of the center electrode so as to determine a position for the spacer and/or a step of retrieving the spacer after bending the metal strip so that the gap-distance between the metal strip and the center electrode is adjusted to a required value by referring to a position of the preliminary bent metal strip and the position of the firing end of the center electrode.
Description
Technical field
The present invention relates to make the method and apparatus that is used for the spark plug of fire fuel gas in internal combustion engine, and particularly relate to the contre electrode that accurately is manufactured in the spark plug and the method and apparatus of the gap between the grounding electrode.
Background of invention
In recent years, because to can be used for the requirement such as the high-performance spark plug of freedom from repairs internal combustion engine, the gap deviation between the plug ignition terminal that is allowed and the bonding jumper of grounding electrode is constantly reducing.Therefore, provide a kind of reliable method, by this spacing accurately of crooked electrode bar for grounding accurately to make gap with regard to needing new invention.
In the process in traditional formation gap, by with this one step of drift stamped metal bar with the electrode bar for grounding bending, wherein bonding jumper vertically is welded on the terminal surface of spark plug metal-back and has inserted a partition between contre electrode and grounding electrode.Yet, may be because a variety of causes, bending as bonding jumper itself, the welding condition of rod, the protrusion degree of the diameter of rod and length variation and the contre electrode ignition terminal of stretching out from metal-back is in the gap of different spark plugs and be not easy to obtain the statistics uniformity of narrow deviation gap spacing.
Particularly, use the high-performance spark plug of high anticorrosive hard metal tip only allow it gap and the optimum spark crack between very little deviation is arranged, wherein metal tip is made by rare metal such as platinum and/or iridium, diameter is 0.3-1mm, forms on contre electrode.Because metal tip is to be welded in addition on the contre electrode, as passing through laser welding, therefore the protrusion degree of ignition terminal may be different in different spark plugs.Such high-performance spark plug is at for example EP 0 872928, and USP 5,793, describes in 793 and USP5,977695.
If make partition abut against on such minor diameter metal tip of contre electrode so that deviation is reduced to minimum, so because the bonding jumper bending, will on bonding jumper, apply a very high pressure by partition, this may cause a kind of danger is exactly that the minor diameter point that is welded to contre electrode can break, and damages or comes off.
Summary of the invention
Therefore, one object of the present invention just provides a kind of manufacturing method and apparatus that has the spark plug of accurate gap between grounding electrode and contre electrode.Another object of the present invention just provide a kind of at spark plug grounding electrode and the ignition terminal at contre electrode rare metal tip between accurately make the method and apparatus of gap.
According to the present invention, the method of making spark plug is provided, described spark plug comprises the contre electrode that is arranged in the hole that forms in the porcelain insulator, is installed in the outer metal-back of porcelain insulator and forms the grounding electrode of gap with contre electrode, and this manufacture method comprises the steps:
Terminal stretch metal bar from metal-back;
Partition is positioned on the ignition terminal of contre electrode;
Towards the arch section of the first bending metals bar of partition direction with the formation bonding jumper;
Then by and the direction of the parallel axes of contre electrode on further apply power between the ignition terminal of bonding jumper and contre electrode, accurately to form the gap spacing to bonding jumper.
In this explanation, phrase " bonding jumper " refers to any elongated hardware, is not limited to any concrete shape of cross section and aspect ratio.
In one aspect of the invention, importantly on ignition terminal, provide partition, so that during the step of first bending metals bar, prevent that ignition terminal is damaged.In another aspect of the present invention, the position of partition is to decide by the position of the ignition terminal of reference contre electrode, so that partition can not touch on the ignition terminal of contre electrode, and can form arch section in bonding jumper.In other words, preferably between the ignition terminal of partition and contre electrode, provide the gap with the protection ignition terminal.
Accurately form between the ignition terminal of bonding jumper and contre electrode in the step of gap spacing, the arch section that forms in bonding jumper has guaranteed the horizontal adjustment of the ignition terminal face of the side of bonding jumper and contre electrode.Partition has circular part, by with such as drift, with bonding jumper towards or be more preferably circular portion bending along partition so that between the two ends of bonding jumper, make the arch section of bonding jumper.As the replacement of the circular portion of partition, the bent angle slot part also can be finished same effect.Be preferably in the roughly the same horizontal plane of the ignition terminal face of contre electrode on make arch section.
Of the present invention one preferred aspect, above method also comprises a step;
Measure the position of the ignition terminal position of contre electrode with the decision partition.
Before the partition of location, the position measurement of ignition terminal of carrying out contre electrode is very important, so as with bonding jumper to before the partition bending of the ignition terminal of protection contre electrode and during, form and keep gap between the ignition terminal of partition and contre electrode.
With above same method, can protect the ignition terminal of contre electrode, this ignition terminal has a firing tip that diameter is very little, and for example diameter range is 0.3 to 1.0mm.This tip preferably is made of the metal of selecting from platinum, iridium, rhodium, palladium, rhenium, osmium, ruthenium or their alloy, and is welded on the contre electrode to form the ignition terminal of contre electrode.
Of the present invention preferred aspect, each method described above can also comprise a step:
After the bending metals bar, remove partition, so that, the gap spacing between bonding jumper and the contre electrode is adjusted to desired numerical value by with reference to the position of just curved bonding jumper and the position of igniting metal end.
In above preferred embodiment, it is useful removing partition behind just curved bonding jumper, because by for example computer-controlled sensed image processor, can measure at an easy rate or the ignition terminal of definite bonding jumper (being grounding electrode) and contre electrode between the gap spacing, wherein sensed image processor grounding electrode that should further dwindle or adjust according to the side-looking measurement result of gap spacing to the output of bonding jumper bending machinery and the gap distance values between the contre electrode.
Of the present invention one preferred aspect, storing in the memory of computer and closing central electrode ignition location information of terminals is of great use, so that this information is used to locate partition.This information can also perform well in following steps, in this step, can very accurately form or adjust the gap spacing between the ignition terminal of bonding jumper and contre electrode.
Another aspect of the present invention is to decide positional information with reference to the position of a part forming spark plug.If by obtaining a reference position at the end of metal-back such as the position detection sensor that uses laser, the position of ignition terminal just is meant the numerical value of contre electrode ignition terminal from the end protrusion amount of metal-back, and wherein bonding jumper is to be welded on the described metal-back with stretching.Obtain thus indicating and partition is placed on the position how high on the contre electrode ignition terminal or in the positional information that structure goes out arch section that where goes up of bonding jumper.
Another aspect of the present invention is, the positional information of contre electrode ignition terminal can not only be used for the aforesaid partition of locating on ignition terminal, and can also being used between bonding jumper and contre electrode ignition terminal accurately, structure goes out the gap spacing.In this case, positional information is only required and is used for crooked (grounding electrode) bonding jumper.
Another aspect of the present invention is, is applied to the power that is used for accurately forming gap on the bonding jumper and is by drift or punch die to form along moving with the direction of the parallel axes of spark plug center electrode.Perhaps, just curved bonding jumper can by drift or punch die with the direction of the axis normal of contre electrode or direction that this both direction is combined on move and carry out.
The present invention also provides and has been applicable to the device of implementing top any one method.
Brief description
The present invention only also describes embodiment with reference to the accompanying drawings by embodiment:
Fig. 1 has shown the schematic diagram of a spark plug (W) for part illustrates the method for spark plug constructed in accordance and/or the key diagram of device, and spark plug is useful on the straight bonding jumper (W that constitutes grounding electrode
2), described straight bonding jumper is welded to metal-back (W vertically
3) end, the rare metal tip (W that wherein on contre electrode, forms
1) the position of ignition terminal determine by the position detection sensor 1 that uses laser.
Fig. 2 has shown the part schematic diagram of the spark plug identical with manufacturing procedure shown in Figure 1 for part illustrates the method for spark plug constructed in accordance and/or the key diagram of device, but difference is the position of ignition terminal and has the bonding jumper of being welded on (W
2) sheet metal tip (W
1A).
Fig. 3 has shown the part schematic diagram of the spark plug in the course of processing for part illustrates the method for spark plug constructed in accordance and/or the key diagram of device, and wherein the circular portion of partition 3 leans against bonding jumper (W
2) lateral parts, and partition 3 has at partition 3 and rare metal tip (W
1) ignition terminal between the gap d that forms.
Fig. 4 has shown the part schematic diagram of the spark plug in the course of processing for part illustrates the method for spark plug constructed in accordance and/or the key diagram of device, wherein promotes bonding jumper (W by the circular portion along partition 3
2), drift 4 is at bonding jumper (W
2) middle bent bonding jumper (W
2).
Fig. 5 has shown the part schematic diagram of the spark plug in the course of processing for part illustrates the method for spark plug constructed in accordance and/or the key diagram of device, and wherein punch die 6 promotes by just curved bonding jumper (W
2), assisting down of sensed image processor 7, at bonding jumper (W
2) and metal tip (W
1) between accurately form gap (g).
Shown in Figure 6 is the block diagram of gap forming controller 8, and wherein position detection sensor 1 is sent the positional information of ignition terminal with digitlization and stored in the computer storage (ROM or RAM), is used for just curved bonding jumper and/or accurately makes gap.
Fig. 7 illustrates the method for spark plug constructed in accordance and/or the key diagram of device for part, and Ben Tu is similar to Fig. 4, but punch die 75 is different with the shape of partition 73, and described partition can be made bonding jumper (W on the roughly the same level of contre electrode ignition terminal
2) arch section.
Fig. 8 illustrates the method for spark plug constructed in accordance and/or the key diagram of device for part, wherein, and by just curved bonding jumper (W
2) the position measure by position detection sensor 1.
Fig. 9 illustrates the method for spark plug constructed in accordance and/or the key diagram of device for part, wherein, and metal-back (W
3) terminal position measured by position detection sensor 1.
Detailed Description Of The Invention
The spark plug that is used for the ignition engine fuel gas comprises the contre electrode that is passed in the hole that forms on the aluminium oxide ceramics insulator and runs through setting, and described insulator makes the metal-back electric insulation that contre electrode is outer with being assemblied in porcelain insulator.Metal-back has threaded portion and the end face in the hole that is used to be screwed into engine, stretches out grounding electrode from end face.Between contre electrode ignition terminal and bonding jumper (being grounding electrode), form gap,, between electrode, produce spark so that when electrode is applied high pressure.
With regard to being easy to produce spark, wish the ignition terminal of contre electrode is come to a point.Yet the ignition terminal of this point produces under the condition of spark continuously at engine interior, and the tendency of rapid corrosion or wearing and tearing is arranged.For this reason, the metal of anti-spark erosion such as platinum and iridium rhodium (5-30%) alloy just begin to be used to the tip that ignition terminal has the minor diameter of about 0.3-1mm.Preferably, by using laser, the metal tip that length is approximately the anti-spark erosion of 0.2-1mm is welded on the cone-shaped end of contre electrode.Firmly be placed on contre electrode in the ceramic hole and have the big relatively diameter of 1.5-3mm.The material of contre electrode that is welded with metal tip is normally based on the alloy of nickel.
Embodiment
According to the present invention, the method and apparatus of manufacturing spark plug is explained in detail with reference to the accompanying drawings and is described.
With reference to Fig. 1, will be as the straight bonding jumper (W of spark plug (W) grounding electrode
2) the method for end by Contact welding be connected to metal-back (W
3) circular distal.Metal-back (W
3) material preferably make by carbon steel.Nickeliferous iron is used as bonding jumper (W
2) material.
Contre electrode 2 has the cone-shaped end of being made by high temperature resistant metal such as inconel 600 (trade name).Metal tip (the W that will make by metal such as iridium-20% rhodium, iridium-5% platinum, iridium-1.5% yttria and platinum-20% iridium of anti-spark erosion
1) be welded on the cone-shaped end of contre electrode.At most advanced and sophisticated (W
1) and cone-shaped end between the interface apply laser beam, diameter is about the metal termination (W that 0.3-1mm, length are about 0.2-0.9mm
1) be welded on the cone-shaped end of contre electrode 2.
When on the cone-shaped end of contre electrode 2, needing metal tip (W
1) so that when forming the ignition terminal of anti-spark erosion, can be selectively with by the anti-spark erosion material small pieces tip (W that makes of Pt-20%Ni for example
1A) be welded to bonding jumper (W
2) the side on, as shown in Figure 2 so that also improve the anti-spark erosion of grounding electrode.Because in this step, the bonding jumper that is used for grounding electrode is vertical and/or straight making, anticorrosive tip (W
1A) to be welded to bonding jumper (W
2) the optimum position very expediently by with reference to metal tip (W
1) the position of ignition terminal determine.In other words, if the position of the contre electrode ignition terminal that detects is higher, sheet point (W
1A) position will be improved thereupon, so that the described in the back gap formation stage is by bending metals bar (W
2) make sheet tip (W
1A) with metal tip (W
1) be in relative position.
Sheet metal tip (W
1A) common thick 0.2-0.5mm and make by the metal of the anti-spark erosion of making by platinum, iridium, rhodium, palladium, rhenium, osmium, ruthenium, nickel or their alloy.
At metal-back (W
3) end on vertically or as the crow flies form bonding jumper (W
2) step after, as Fig. 1 or shown in Figure 2, position detection sensor 1 is by to metal tip (W
1) terminal surface emission laser beam and collect the metal tip (W that the laser beam measurement that reflects from it is formed on the cone-shaped end of contre electrode 2
1) terminal position.In this case, metal tip (W
1) the position be meant distance between metal tip terminal surface and the position detection sensor 1.Be longer than the distance of under Fig. 2 situation, measuring in the distance of measuring by transducer 1 under Fig. 1 situation, because keeping the insulator (W of contre electrode among Fig. 2
4) than the insulator among Fig. 1 protrude many.In other words, metal tip (W in Fig. 1
1) the position represent from metal-back (W
3) the terminal contre electrode height (h that measures
1) be less than the height (h of contre electrode among Fig. 2
2).
At aforesaid definite metal tip (W
1) after the step of position, carry out just curved bonding jumper (W
2) step, will set forth below with reference to Fig. 3 and Fig. 4.
By exerting pressure, at bonding jumper (W
2) on formed arch section, and keep straight free end portion (W
3F).At just curved stage, bonding jumper (W
2) angle of bend be preferably about 110-135 degree.
In the just curved stage, partition 3 protections form the metal tip (W of pointed contre electrode ignition terminal
1) very important, because the pointed ignition terminal of high-performance spark plug is mainly selected the minor diameter of 0.3-0.7mm for use.In addition, partition should be rigidity and toughness, so that in a large amount of first curved stages of producing spark plug, partition can not be out of shape or break, causes metal tip (W thereby eliminate
1) damage any may or contacting metal point in no instance.The suggesting material of partition is alloy tool steel SKD11 (shown in JIS G 4404), and this material also resistance to wears.
Partition can have different shapes.For example, partition 73 shown in Figure 7 has circular nose (73a), than (3a) the more downward stretching, extension among Fig. 3 or Fig. 4, thereby guarantees to form the position of arch section (73c) on the about identical horizontal plane of ignition terminal, and keeps metal tip (W
1) ignition terminal and the protection gap between the partition 73.When at bonding jumper (W
2) in the terminal surface of the position of the arch section that forms and metal tip when roughly the same horizontal plane, be easy to the bending metals bar, and in following steps, be easy to make the side and the metal tip (W of bonding jumper
1) terminal surface parallel.
With partition 3 from as above fetch or remove with the position that Fig. 4 explained after, have the punch die 6 rather than the drift 3 of the plane surface of level, see Fig. 5, move downward along the axis direction of contre electrode, push bonding jumper (W
2) lateral surface so that the inboard of bonding jumper and metal tip (W
1) terminal surface substantially parallel.In this step, by with reference to being stored in metal tip (W in the computer storage
1) location information data, can accurately form bonding jumper (W
2) and metal tip (W
1) between gap spacing (g).Whether the sensed image processor 7 that is used to detect the use of gap spacing such as CCD (charge coupled device) can detect is to have formed gap spacing (g) in the numerical value that requires, assist accurately formation gap spacing (g) as shown in Figure 5, or by the gap spacing that reference processor 7 is measured.In actual applications, the desired numerical example of high-performance spark plug is as being 1.1mm, and tolerance is+0 to-0.1mm.
As Fig. 8 or shown in Figure 9, use the position detection sensor 1 of laser can determine just curved bonding jumper (W
2) or metal-back (W
3) position of terminal surface.Under the situation of having determined just curved bonding jumper position as shown in Figure 8, by with the metal tip (W of anti-spark erosion
1) position data compare, can calculate and determine the further numerical value of bending of just curved bonding jumper.Determining metal-back (W as shown in Figure 9
3) under the situation of terminal surface position, not only by metal tip (W relatively
1) location information data, can calculate the height (h) of determining metal tip, promptly from metal-back (W
3) terminal surface to metal tip (W
1) the distance of ignition terminal, and as previously mentioned,, can will resist the sheet metal tip (W of spark erosion by with reference to the data of so calculating the height of determining (h)
1A) be welded to bonding jumper (W
2) the optimum position on.These positional informations and data division or integrally, or, can be used to finish the present invention through adjusting.
Referring now to the gap formation controller 8 that gap forms device that is used for shown in Figure 6, positional information electricity by position detection sensor 1 analogue measurement can be converted to the digital information form by analog/digital converter 9, so that form procedure stores in computer 10 with central processing unit 11, read-only memory 12 and random asccess memory 13 by input/output interface and gap, and/or by computer 10 direct or indirect calculating location informations so that to or form device transmitt or receive signal (S from gap
1, S
2, S
3, S
4... S
n).
For example, receive metal tip (W when computer 10
1) be welded to metal-back (W
3) signal (S
1) time, computer 10 sends signal (S to position detection sensor 1
3) to measure metal tip (W
1) and/or the position of metal-back terminal surface, as Fig. 1 or shown in Figure 9.The location information data and the calculating of gathering according to computer 10 then, computer 10 sends signal (S to first bender bed
4), instruction is placed on metal tip (W with partition 3
1) on, and partition 3,73 and bonding jumper (W
1) between the gap left in order to form bonding jumper (W
2) arch section.
Be placed on the signal (S of desired location when receiving partition
2) time, computer 10 sends signal (S to press machine
n), form arch section to move downward and just to bend bonding jumper.Use similar methods, when computer 10 received the signal of first kinking bundle, the processor instruction press machine was withdrawn from partition 3,73, and after confirming to withdraw from, processor instruction punch die lathe and the further bending metals bar of sensed image processor collaborative work (W
2), so that on the basis of location information data, the spacing of gap is formed or adjusts in the desired numerical value of high-performance spark plug.
Claims (21)
1. method of making spark plug, described spark plug comprises the contre electrode that is arranged in the hole that forms in the porcelain insulator, be assemblied in the outer metal-back of porcelain insulator and form the grounding electrode of gap with contre electrode, this method comprises the steps:
The bonding jumper that stretches out from the metal-back end is provided, and described bonding jumper is used to form described grounding electrode;
On the ignition terminal of contre electrode, locate partition;
Towards the first bending metals bar of the direction of partition so that in bonding jumper, form arch section;
By exerting pressure, between the ignition terminal of bonding jumper and contre electrode, accurately form the gap spacing then to bonding jumper.
2. method according to claim 1 also comprises a step:
Measure the position of contre electrode ignition terminal so that determine the position of partition.
3. method according to claim 2 is characterized in that,
Gap between partition and the contre electrode ignition terminal is to determine according to the measuring position of contre electrode.
4. method according to claim 1 and 2 also comprises a step:
Behind the bending metals bar, withdraw from partition, so that, the gap spacing between bonding jumper and the contre electrode can be adjusted to the numerical value of requirement by with reference to the position of just curved bonding jumper and the position of contre electrode ignition terminal.
5. according to claim 1,2,3 or 4 described methods also comprise a step:
Before providing after the bonding jumper that the metal-back end stretches out and locating partition on the ignition terminal at contre electrode, the sheet metal tip is welded to side as the bonding jumper of grounding electrode, and the sheet metal point is made by the metal of the anti-spark erosion that comprises platinum, iridium, rhodium, palladium, rhenium, osmium, ruthenium, nickel or their alloy.
6. according to any described method of claim in front, it is characterized in that,
In the step of bending metals bar, keep the gap between partition and the ignition terminal, so that the ignition terminal of protection contre electrode.
7. according to any described method of claim in front, it is characterized in that,
The contre electrode ignition terminal is that make at the tip of 0.3-1mm by diameter.
8. method according to claim 7 is characterized in that,
The tip comprises the metal that is selected from platinum, iridium, rhodium, palladium, rhenium, osmium, ruthenium or their alloy.
9. according to any described method of claim in front, it is characterized in that partition has circular portion, bonding jumper is bent towards this circular portion at described first crooked stage drift.
10. according to any described method of claim in front, also comprise step:
In computer storage, store and close central electrode ignition location information of terminals; With
Described information is used to locate partition.
11., also comprise step according to any described method of claim in front:
In computer storage, store and close central electrode ignition location information of terminals; With
Described information is used for accurately forming gap spacing between bonding jumper and the contre electrode ignition terminal.
12. according to any described method of claim in front, it is characterized in that, determine that by the positional information of contre electrode ignition terminal the position of partition, this positional information are to determine with reference to the position of the part of forming spark plug.
13. according to any described method of claim in front, it is characterized in that, utilize the position sensor that uses laser to measure the positional information of contre electrode ignition terminal.
14. according to any described method of claim in front, it is characterized in that, form the power that bonding jumper is used for accurately forming the gap spacing that imposes on along moving with the direction of contre electrode parallel axes by punch die.
15. according to any described method of claim in front, it is characterized in that, be positioned on the horizontal plane identical at the arch section that forms on the bonding jumper with contre electrode ignition terminal cardinal principle by the location partition.
16. device that is used to carry out any described method of claim in front.
17. a device of making spark plug, described spark plug comprise the contre electrode that is placed in the hole that forms in the porcelain insulator, are assemblied in the outer metal-back of porcelain insulator and form the grounding electrode of gap with contre electrode, this device comprises:
The device that is used for location partition on the ignition terminal of contre electrode;
So that form the device of arch section in bonding jumper, described bonding jumper is provided with from terminal stretching, extension of metal-back, and is used to form described grounding electrode towards the first bending metals bar of the direction of partition; With
By exert pressure the device that between the ignition terminal of bonding jumper and contre electrode, accurately forms the gap spacing to bonding jumper.
18. device according to claim 17 also comprises the position detection sensor that uses laser, is used to measure the positional information of contre electrode ignition terminal.
19. according to claim 17 or 18 described devices, also comprise the sensed image processor, be used to detect the information of described gap spacing.
20. according to claim 18 or 19 described devices, also comprise memory, be used to store the positional information of described measurement and/or the gap pitch information of described detection.
21. according to claim 18,19 or 20 described devices, also comprise central processing unit, be used to control the described device of the described partition in location, just curved described bonding jumper described device and accurately form the described device of described gap spacing according to the information of described measurement and/or storage.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2000/003479 WO2001093389A1 (en) | 2000-05-30 | 2000-05-30 | Method and apparatus for making spark plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1365531A true CN1365531A (en) | 2002-08-21 |
| CN1309130C CN1309130C (en) | 2007-04-04 |
Family
ID=11736090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB008109826A Expired - Fee Related CN1309130C (en) | 2000-05-30 | 2000-05-30 | Method and apparatus for making spark plug |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1285481B1 (en) |
| KR (1) | KR100741934B1 (en) |
| CN (1) | CN1309130C (en) |
| AU (1) | AU4783400A (en) |
| DE (1) | DE60021431T2 (en) |
| WO (1) | WO2001093389A1 (en) |
Cited By (5)
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|---|---|---|---|---|
| CN100583580C (en) * | 2003-03-25 | 2010-01-20 | 日本特殊陶业株式会社 | Spark plug |
| CN102160247A (en) * | 2008-10-06 | 2011-08-17 | 日本特殊陶业株式会社 | Method for manufacturing spark plug and device for manufacturing spark plug |
| CN104338807A (en) * | 2013-07-23 | 2015-02-11 | 西安永电电气有限责任公司 | Electrode bending punch head with inclined plane structure and inclined plane type electrode bending method |
| CN104852280A (en) * | 2014-02-17 | 2015-08-19 | 日本特殊陶业株式会社 | Spark plug and manufacturing method thereof |
| CN107453212A (en) * | 2016-05-09 | 2017-12-08 | 日本特殊陶业株式会社 | The manufacture method of spark plug |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002231412A (en) | 2001-01-31 | 2002-08-16 | Ngk Spark Plug Co Ltd | Method of manufacturing spark plug and manufacturing device |
| EP1231689B1 (en) | 2001-02-08 | 2008-01-30 | Ngk Spark Plug Co., Ltd | Method for manufacturing spark plug and apparatus for carrying out the same |
| EP1376792B1 (en) | 2002-06-25 | 2011-09-28 | NGK Spark Plug Co., Ltd. | Method and apparatus for making spark plug |
| JP4155141B2 (en) * | 2003-08-19 | 2008-09-24 | 株式会社デンソー | Spark plug manufacturing method and apparatus |
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| DD264555A1 (en) * | 1987-10-01 | 1989-02-01 | Sonnenberg Elektrokeramische | METHOD AND DEVICE FOR ADJUSTING THE ELECTRODE DISTANCE OF SPARK PLUGS |
| DD278449A1 (en) * | 1988-12-21 | 1990-05-02 | Sonnenberg Elektrokeramische | DEVICE FOR BENDING THE MASS ELECTRODE OF SPARK PLUGS |
| DD281059A1 (en) * | 1989-04-03 | 1990-07-25 | Elektrokermaische Werke Sonneb | DEVICE FOR ADJUSTING THE SPARKLE SPLIT FOR ROOF-MOORING FENCIL MASTER ELECTRODES |
| JP2636814B2 (en) * | 1995-08-10 | 1997-07-30 | 株式会社デンソー | Spark gap creation method for spark plugs |
-
2000
- 2000-05-30 AU AU47834/00A patent/AU4783400A/en not_active Abandoned
- 2000-05-30 DE DE60021431T patent/DE60021431T2/en not_active Expired - Lifetime
- 2000-05-30 EP EP00929922A patent/EP1285481B1/en not_active Expired - Lifetime
- 2000-05-30 CN CNB008109826A patent/CN1309130C/en not_active Expired - Fee Related
- 2000-05-30 KR KR1020027000431A patent/KR100741934B1/en not_active IP Right Cessation
- 2000-05-30 WO PCT/JP2000/003479 patent/WO2001093389A1/en active IP Right Grant
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100583580C (en) * | 2003-03-25 | 2010-01-20 | 日本特殊陶业株式会社 | Spark plug |
| CN102160247A (en) * | 2008-10-06 | 2011-08-17 | 日本特殊陶业株式会社 | Method for manufacturing spark plug and device for manufacturing spark plug |
| CN102160247B (en) * | 2008-10-06 | 2013-07-31 | 日本特殊陶业株式会社 | Method for manufacturing spark plug and device for manufacturing spark plug |
| CN104338807A (en) * | 2013-07-23 | 2015-02-11 | 西安永电电气有限责任公司 | Electrode bending punch head with inclined plane structure and inclined plane type electrode bending method |
| CN104852280A (en) * | 2014-02-17 | 2015-08-19 | 日本特殊陶业株式会社 | Spark plug and manufacturing method thereof |
| CN107453212A (en) * | 2016-05-09 | 2017-12-08 | 日本特殊陶业株式会社 | The manufacture method of spark plug |
| CN107453212B (en) * | 2016-05-09 | 2019-08-30 | 日本特殊陶业株式会社 | The manufacturing method of spark plug |
Also Published As
| Publication number | Publication date |
|---|---|
| AU4783400A (en) | 2001-12-11 |
| KR20020042616A (en) | 2002-06-05 |
| EP1285481A1 (en) | 2003-02-26 |
| EP1285481B1 (en) | 2005-07-20 |
| DE60021431T2 (en) | 2006-05-24 |
| KR100741934B1 (en) | 2007-07-24 |
| WO2001093389A1 (en) | 2001-12-06 |
| DE60021431D1 (en) | 2005-08-25 |
| CN1309130C (en) | 2007-04-04 |
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Granted publication date: 20070404 Termination date: 20180530 |