CN102642075A - Apparatus of determining whether electrode tip is up to standard - Google Patents
Apparatus of determining whether electrode tip is up to standard Download PDFInfo
- Publication number
- CN102642075A CN102642075A CN2011101943292A CN201110194329A CN102642075A CN 102642075 A CN102642075 A CN 102642075A CN 2011101943292 A CN2011101943292 A CN 2011101943292A CN 201110194329 A CN201110194329 A CN 201110194329A CN 102642075 A CN102642075 A CN 102642075A
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- mentioned
- light
- optical sensor
- projecting portion
- accepting part
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/30—Features relating to electrodes
- B23K11/3063—Electrode maintenance, e.g. cleaning, grinding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/24—Electric supply or control circuits therefor
- B23K11/25—Monitoring devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/30—Features relating to electrodes
- B23K11/31—Electrode holders and actuating devices therefor
- B23K11/314—Spot welding guns, e.g. mounted on robots
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8806—Specially adapted optical and illumination features
Abstract
The invention provides an apparatus of determining whether an electrode tip is up to standard, which can be used simply and is provided with a light-emitting part of the opto-sensor and the check part of a light-receiving part. The apparatus respectively irradiates the light from the light-emitting part of each opto-sensor to each top end surface, uses the strength of the reflected light received by the light-receiving part of each opto-sensor to determine whether the top end surfaces of the upper electrode tip and the lower electrode tip are up to standard. The apparatus is provided with the check part which has the light-emitting part and the light-receiving part of the opto-sensor and a maintaining piece for maintaining the light-emitting part and the light-receiving part of the opto-sensor. The maintaining piece is provided with a through hole through a mode for saving the space with the top end surface, and maintains the light-emitting part and the light-receiving part of the opto-sensor around the through hole.
Description
Technical field
The present invention relates to a kind of top end face irradiation to electrode tip (tip) and judge the whether qualified judgment means of whether qualified electrode tip of the top end face of the pair of electrical cartridge that remains on the welding gun from the light of the light-projecting portion of optical sensor, the catoptrical power of utilizing the light accepting part by optical sensor to receive.
Background technology
In the past, if the pair of electrical cartridge that remains on the welding gun carries out repeatedly spot welding, top end face will wear and tear, and also can be attached with dirts such as oxide scale film, therefore utilized electrode tip trimmer (dresser) to cut.But, at this moment,, will cause welding defective if do not remove dirt or tiny concavo-convex fully, therefore utilize whether qualified judgment means to judge top end face whether qualified of electrode tip.
And in whether qualified judgment means in the past, to the light of the top end face of electrode tip irradiation from the light-projecting portion of optical sensor, the catoptrical power of utilizing the light accepting part by optical sensor to receive is judged (for example with reference to patent documentation 1,2).In addition, in this was judged, if reverberation is the low light level, catoptrical light quantity was lower than the threshold value of regulation, then is defective, if reverberation is a high light, catoptrical light quantity is higher than the threshold value of regulation, then is qualified.
Patent documentation 1: japanese kokai publication hei 4-118179 communique
Patent documentation 2: japanese kokai publication hei 3-297584 communique
But; In patent documentation 1 described whether qualified judgment means; Disposing the pair of electrical cartridge with relative up and down mode goes forward side by side and exercise to use; And, the light-projecting portion of optical sensor and light accepting part be configured in the relative along the vertical direction top end face between cartridge and the bottom electrode head, that power on cartridge that powers under.Therefore; If sometimes from the dust of the cartridge that powers on or water droplet falls and attached on the light-projecting portion of optical sensor, the light accepting part; Judgement after then can not carrying out; Just need clean maintenances such as light-projecting portion, light accepting part, long-time this one side of using has room for improvement on without difficulty ground.
In addition, because solidify and first-class, so produced water droplet attached to electrode tip at internal circulation cooling water, the vapor in the atmosphere of welding gun.
In addition, in patent documentation 2 described whether qualified judgment means, the light-projecting portion of optical sensor and light accepting part are configured in the left and right sides of the cartridge that powers on with leaving mutually, are difficult to produce above-mentioned unfavorable condition.But; In patent documentation 2 described whether qualified judgment means; The light-projecting portion of optical sensor and light accepting part leave each other and are installed in respectively on the erecting bed in the both sides of electrode tip, and the inspection portion that is equipped with light-projecting portion and light accepting part in the whether qualified judgment means maximizes.In addition, only judge the whether qualified of bottom electrode head, come the whether qualified of electrode tip presumably according to this bottom electrode head whether qualified.Therefore, if the top end face of the cartridge that powers on is defective, it is defective to produce welding after then.Certainly also consider to have so that an optical sensor also can be set for the top end face of judging the cartridge that powers on again and judge top end face whether qualified of the cartridge that powers on, but can further cause inspection portion to maximize.
Summary of the invention
The invention solves above-mentioned problem, its purpose is to provide a kind of whether qualified judgment means of electrode tip that can use without difficultyly and can constitute the inspection portion of the light-projecting portion that is equipped with optical sensor, light accepting part compactly.
The explanation of technical scheme 1
In the of the present invention whether qualified judgment means, remaining on pair of electrodes capitiform on the welding gun becomes from the top end face that is used for connecting with workpiece to the root side hole enlargement,
The whether qualified judgment means of this electrode tip is through to the top end face irradiation light from the light-projecting portion of optical sensor, and the catoptrical power of utilizing the light accepting part by optical sensor to receive is judged top end face whether qualified of electrode tip, it is characterized in that,
The upside that the top end face of the cartridge that powers on of the upside when optical sensor uses and to dispose the mutual top end face of pair of electrical cartridge with relative up and down mode whether qualified judged usefulness with the whether qualified downside of judging usefulness of the top end face of the bottom electrode head of optical sensor and downside with these two groups of optical sensors of optical sensor
The whether qualified judgment means of this electrode tip form whether qualified when judging each other near power on cartridge and bottom electrode head around set the structure of inspection portion; This inspection portion have upside with the light-projecting portion of optical sensor and light accepting part, downside with the light-projecting portion and the light accepting part of optical sensor and be used to keep upside with the light-projecting portion of optical sensor and light accepting part, downside with the light-projecting portion of optical sensor and the keeper of light accepting part
Upside is maintained on the keeper with following configuration with the light-projecting portion and the light accepting part of optical sensor: upside uses in the light-projecting portion of optical sensor and the relative up and down top end face space each other that light accepting part does not get into power on cartridge and bottom electrode head but around space, makes the lens section on top is the oblique upper of the mutual line symmetry of center line towards the axial line with electrode tip with the mode relative with the top end face of the cartridge that powers on
Downside is maintained on the keeper with following configuration with the light-projecting portion and the light accepting part of optical sensor: downside use light-projecting portion and the light accepting part of optical sensor not to get in the space but the lens section that makes the top around the space with the mode relative with the top end face of bottom electrode head towards with axial line mutual line symmetry of electrode tip as center line tiltedly below
Keeper form with the mode of vacating space at least be provided with through hole and surround through hole around the position keep upside with the light-projecting portion of optical sensor and light accepting part, downside structure with the light-projecting portion and the light accepting part of optical sensor.
In of the present invention whether qualified judgment means; When whether qualified when judging power on cartridge and bottom electrode head near and up and down relatively the time; Upside with optical sensor, downside with optical sensor respectively from the top end face irradiates light of light-projecting portion to correspondence, receive the light of reflection with light accepting part.And for these catoptrical powers, if be higher than the threshold value of regulation, it is qualified just to be judged as, if be lower than the threshold value of regulation, just is judged as defective.
And these upsides make light-projecting portion and the light accepting part of inspection portion not get in the space with optical sensor, downside respectively with optical sensor and around space, holding them on the keeper.And, keeper also form with at least the empty each other mode of opening space of relative up and down top end face through hole is set and surrounding through hole around the position keep upside with the light-projecting portion of optical sensor and light accepting part, downside structure with the light-projecting portion and the light accepting part of optical sensor.
Therefore, even fall attached to the dust or the water droplet of the tip side of the cartridge that powers on, these dusts or water droplet also transmit in wide diameter portion, fall from the position of the top end face of thin head, through through hole.Its result; These dusts or water droplet are difficult to attached to upside with on the light-projecting portion of optical sensor and light accepting part, the light-projecting portion and light accepting part of downside with optical sensor; Need not clean upside with the light-projecting portion of optical sensor and light accepting part, downside with maintenances such as the light-projecting portion of optical sensor and light accepting parts, use whether qualified judgment means can without difficulty ground for a long time.
In addition, the upside top end face space each other that is maintained at relative up and down power on cartridge and bottom electrode head with the light-projecting portion and the light accepting part of optical sensor with the light-projecting portion of optical sensor and light accepting part, downside around, be the position around the through hole of keeper.In other words, upside is maintained on the keeper of a ring-type with the light-projecting portion and the light accepting part of optical sensor with the light-projecting portion of optical sensor and light accepting part, downside, can shared maintenance position, so inspection portion can constitute its structure simple and compactly.In addition; If form when the lens section that makes the top when the inner peripheral surface of through hole exposes the ground configuration; Make the inner peripheral surface of this through hole do one's utmost configuration near space with the state that does not get into space; Then can further constitute keeper self compactly, inspection portion can be configured in compactly the top end face of electrode of opposite head up and down mutual around.
Thereby, in the whether qualified judgment means of electrode tip of the present invention, can use without difficultyly, and can constitute the light-projecting portion that is equipped with optical sensor, the inspection portion of light accepting part compactly.
The explanation of technical scheme 2
In addition; Preferred upside is maintained on the keeper with following configuration with the light-projecting portion and the light accepting part of optical sensor with the light-projecting portion of optical sensor and light accepting part, downside: upside is configured in than downside with the light-projecting portion of optical sensor and the light accepting part position by the below with the light-projecting portion of optical sensor and light accepting part, and side is overlapping with the light-projecting portion and the light accepting part of optical sensor in the above-below direction up and down.
In this structure; At first; Upside is with light-projecting portion and the light accepting part configuration overlappingly up and down each other with optical sensor of the light-projecting portion of optical sensor and light accepting part and downside; Therefore with the horizontal direction of overlapping face quadrature on, do not dispose upside with the light-projecting portion of optical sensor and light accepting part, downside light-projecting portion and light accepting part with optical sensor, can set the width dimensions of the keeper of this part little and compactly.
And; In this structure; Upside is configured in the position of leaning on the below with the light-projecting portion and the light accepting part of optical sensor than downside with the light-projecting portion of optical sensor and light accepting part; From with upside with the light-projecting portion of optical sensor and light accepting part and downside with the light-projecting portion of optical sensor and light accepting part up and down the horizontal direction of overlapping face quadrature observe, upside becomes cross one another state with the light-projecting portion of optical sensor and the optical track and the downside of light accepting part with the light-projecting portion of optical sensor and the optical track of light accepting part.Promptly; Comparing with the situation that said structure turns upside down; In other words with upside is configured in than downside with the light-projecting portion of optical sensor and light accepting part lean on the situation of the position of top to compare with the light-projecting portion and the light accepting part of optical sensor; In said structure, can reduce the gauge of above-below direction of cross section, the keeper of optical track, can form the size of the above-below direction of keeper compactly.
Thereby, in said structure, can reduce gauge, keeper and the width dimensions overlapped direction quadrature of sensor of the above-below direction of keeper, can further constitute inspection portion compactly.
The explanation of technical scheme 3
And; Preferred upside with the light-projecting portion of optical sensor and light accepting part and downside with each lens section on the top separately of the light-projecting portion of optical sensor and light accepting part be configured in space around, and be configured to get into from the mutual top end face of electrode of opposite head in the wide diameter portion space each other of root side hole enlargement.
In this structure, can around the axial line of pair of electrical cartridge, not set upside compactly with the light-projecting portion of optical sensor and light accepting part, downside light-projecting portion and light accepting part with optical sensor with radially not leaving.
The explanation of technical scheme 4
And; Preferably on keeper, be provided with and bear seat; Top end face when the top end face of power on cartridge and bottom electrode head whether qualified judged each other near the time; This bears seat can accept each wide diameter portion, and this bears seat form and the power on corresponding concave shape of each wide diameter portion of cartridge and bottom electrode head, is equipped with through hole in central authorities of bearing.
In this structure; If whether qualified make when judging power on cartridge and bottom electrode head each other near; Make each wide diameter portion be connected to the bearing on the seat of correspondence of keeper, each top end face of then power on cartridge and bottom electrode head stably is configured near the opening up and down of through hole.Promptly; Can when judging each time, make with upside stable with the allocation position of each top end face of the relative cartridge that powers on of the light-projecting portion of optical sensor and light accepting part, bottom electrode head with the light-projecting portion of optical sensor and light accepting part, downside; Its result can improve the whether qualified precision of judging.
The explanation of technical scheme 5
And; Preferably offset when fetching the top end face of judging power on cartridge and bottom electrode head whether qualified when the seat that bears with keeper; The light-projecting portion that upside uses optical sensor and light accepting part set that axial line is mutually orthogonal to intersect and be mutual intersection point with the central authorities of the top end face of the whether qualified cartridge that powers on when judging in order to make; And the light-projecting portion that downside uses optical sensor and light accepting part set that axial line is mutually orthogonal to intersect and be mutual intersection point with the central authorities of the top end face of whether qualified bottom electrode head when judging in order to make.
In this structure; Central authorities with the top end face of the electrode tip judged are respectively intersection point, make upside become the state that intersects with 45 ° the mode of tilting with respect to the axial line of electrode tip with the axial line of the light-projecting portion of optical sensor and light accepting part with the axial line of the light-projecting portion of optical sensor and light accepting part, downside.Therefore, can make length dimension and about equally on the upside direction with axial line quadrature electrode tip separately with the light-projecting portion of optical sensor and light accepting part along the height dimension on the direction of the axial line of electrode tip with the light-projecting portion of optical sensor and light accepting part, downside.Promptly; About upside with the light-projecting portion of optical sensor and light accepting part, downside with the light-projecting portion of optical sensor and the configuration space of light accepting part; Can make axial line with electrode tip is that the length dimension radially at center is impartial each other with the height dimension along the axial line of electrode tip, and can both set lessly.Its result; Keep upside can set its height dimension (gauge), the outside dimension (size radially of the axial line of distance electrode head compactly with the light-projecting portion of optical sensor and the keeper of light accepting part with the light-projecting portion of optical sensor and light accepting part, downside; In other words, width dimensions).
The explanation of technical scheme 6
And preferred upside is processed the lens section on top separately with the light-projecting portion of optical sensor and light accepting part, downside with the light-projecting portion and the light accepting part of optical sensor by glass.Promptly; The lens section on the top of light-projecting portion, light accepting part also can be processed by synthetic resin such as Merlon; If but process by glass such as borosilicate glasses, then oil resistivity is good, and; Be difficult to when the cleaning of wiping dirt etc. scratch, therefore can improve upside with optical sensor, downside durability with optical sensor.
Description of drawings
Fig. 1 is the on-the-spot approximate vertical view of welding of the whether qualified judgment means of an expression configuration embodiment of the present invention.
Fig. 2 be the expression this embodiment whether qualified judgment means in inspection portion near summary side elevation.
Fig. 3 is near the approximate vertical view the inspection portion in the whether qualified judgment means of this embodiment.
Fig. 4 is the stereogram of the inspection portion of this embodiment.
Fig. 5 is the vertical view of the inspection portion of this embodiment.
Fig. 6 is the cutaway view of the inspection portion of this embodiment, and is corresponding with the VI-VI position of Fig. 5.
Fig. 7 is the vertical view of the keeper monomer of this embodiment.
Fig. 8 is the cutaway view of the keeper monomer of this embodiment, and is corresponding with the VIII-VIII position of Fig. 7.
The specific embodiment
Below; Based on a description of drawings embodiment of the present invention; As shown in Figure 1; The whether qualified judgment means M of embodiment is configured near the multiarticulate welding robot hand 1 of the workpiece W1 that is used for spot welding and sends here successively, W2..., sets to the whether qualified of the top end face after the cutting of worn out electrode tip judged.And in the situation of embodiment, whether qualified judgment means M has the judging part J on the S of inspection portion that is provided on the electrode tip trimmer 18 that is used to cut electrode tip and the control device 3 that is provided in the action that is used to control welding robot hand 1.
In addition, like Fig. 1, shown in Figure 2, the top at the arm 2 of welding robot hand 1 is equipped with the servo torch (servo gun) 5 as welding gun, servo torch 5 with pair of electrical cartridge 11 (11U, 11B) embed relative each other handle (shank) 7, between 8.This servo torch 5 is standard members, can the handle 7,8 that maintain pair of electrical cartridge 11 moved each other along the relative direction of handle 7,8 by servomotor 6 in when welding etc.For the moving of electrode tip 11, not only make servomotor 6 work, also be used in servomotor (omission Reference numeral) work that arm 2 moves, each handle 7,8 is moved.In addition, servo torch 5 is built-in with encoder in servomotor 6, not shown servomotor, can detect the allocation position of handle 7,8, electrode tip 11, can carry out Position Control, plus-pressure control of electrode tip 11 etc.
And; In the moving area of welding robot hand 1; Except whether qualified judgment means M, also be equipped with the electrode tip trimmer 18 that is used for when changing electrode tip 11, unloading the not shown electrode tip withdrawing device of the electrode tip 11 of having finished using, new electrode tip 11 is installed in the not shown electrode tip feedway on each handle 7,8 and the electrode tip 11 after consuming is cut from each handle 7,8.
And; As shown in Figure 1, near the moving area of welding robot hand 1, be equipped with control device 3, this control device 3 is also adjusted the action control of welding control or welding robot hand 1, servo torch 5, the electrode tip trimmer 18 in cycle of the electric current that flows to electrode tip 11 or adjustment current flowing etc., not shown electrode tip withdrawing device etc.; And; In the situation of embodiment, as stated, also constitute the judging part J of whether qualified judgment means M.
In addition; Shown in Fig. 1～3; Electrode tip trimmer 18 accommodates the cutter 20 that rotates by the work of servomotor 21 in housing 19, be set at can the top 11a of the electrode tip 11 (11U, 11B) of consumption under the state before changing electrode tip 11 in the weld job be cut.When using electrode tip trimmer 18; Under the state on each top that each electrode tip 11 is installed in handle 7,8; With each electrode tip 11 from electrode tip trimmer 18 up and down by on the upper and lower surfaces that is pressed in cutter 20, utilize the rotation of the cutter 20 that the work by servomotor 21 drives to cut.
In the situation of embodiment; As shown in Figure 6, electrode tip 11 is made as 16mm with diameter D0, when utilizing the cutting of being undertaken by the rotation of cutter 20 suitably to cut; Shape as top 11a; On top end face 11b, being formed with diameter D1 is the general planar face of the circle of 6mm, and, be set to be formed with and be the wide diameter portion 11c that radius R is the curve-like hole enlargement of 8mm from top end face 11b to columned root 11d side.By the way, the electrode tip 11 during wearing and tearing makes the axial contraction in length of wide diameter portion 11c along electrode tip 11, and top end face 11b enlarges.And as long as utilize the cutter 20 of rotation to cut, just 11a forms wide diameter portion 11c as shown in Figure 6 and top end face 11b to electrode tip 11 on the top.
In addition; Like Fig. 1, shown in Figure 2; The housing 19 of electrode tip trimmer 18 utilizes installing plate 65 to keep the S of inspection portion; And, to be folded with the mode of spring 17 grades, setting along the vertical direction on the fixing support plate 14 so that the mode that housing 19 can move up and down is supported with the housing 19 of electrode tip trimmer 18.On support plate 14; Separating predetermined distance ground up and down is two row and is provided with supporting bracket 15,15 side by side; On a pair of supporting bracket 15,15 up and down, the mode that links up each other with a pair of supporting bracket 15,15 up and down is equipped with cramp bar 16 along the vertical direction, is with two springs (compression spiral elasticity) 17 outside on each cramp bar 16; And, at two springs 17 up and down, be equipped with the support 19a of housing 19 between 17.Therefore, electrode tip trimmer 18, is set to moving up and down by spring 17,17 supportings with the S of inspection portion with resetting.
Like Fig. 1, Fig. 3, shown in Figure 6, the upside that top end face 11b whether qualified that whether qualified judgment means M constitutes the cartridge 11U that powers on of the upside of use when with relative up and down mode the mutual top end face 11b of pair of electrical cartridge 11,11 closely being disposed mutually judged usefulness with the whether qualified downside of judging usefulness of the top end face 11b of the bottom electrode head 11B of optical sensor 23 and downside with optical sensor 33 these two groups of optical sensors.And as stated, whether qualified judgment means M has the S of inspection portion that is provided on the electrode tip trimmer 18 and is provided in the judging part J on the control device 3.
The S of inspection portion can be provided in whether qualified when judging each other near power on cartridge 11U and bottom electrode head 11B around and utilize installing plate 65 to be fixed on the housing 19 of electrode tip trimmer 18.And, like Fig. 3～shown in Figure 6, the S of inspection portion have upside with the light-projecting portion 26 of optical sensor 23 and light accepting part 27, downside with the light-projecting portion 36 and the light accepting part 37 of optical sensor 33 be used to keep the keeper 40 of light-projecting portion 26,36 and light accepting part 27,37.And the S of inspection portion has the lid 50 that covers front face side from the left and right edges of keeper 40, link to each other with the rear of keeper 40 and keep the neck 52 of keeper 40, link to each other with the rear of neck 52 and keep the main body 54 of neck 52 and main body 54 is fixed on the installing plate 65 on the housing 19.Keeper 40, lid 50, neck 52, main body 54 and installing plate 65 utilize the screw thread fixed part to link together each other.In addition, in the situation of embodiment, installing plate 65 forms with housing 19.
In addition; In the situation of embodiment; Upside uses optical sensor 23 and downside to use optical sensor 33 to utilize respectively with LED to constitute as the Fibre Optical Sensor of light source, on judging part J, is equipped with LED, enlarging section and comparison circuit that the threshold value of the light amount ratio regulation that relatively received is high or low, result's that demonstration is compared output circuit.In embodiment,, use and send ultrared LED as LED.In addition, as shown in Figure 1, it is whether qualified that output circuit constitutes with judging that display part 72 shows.The OK lamp 72a that under the situation (light quantity that is received by light accepting part 27 is higher than the situation of the threshold value of regulation) that the top end face 11b that is equipped with the cartridge 11U that powering on this judgement display part 72 is fit to weld, lights; Be lower than the NG lamp 72b that lights under the situation of threshold value of regulation in the light quantity that receives by light accepting part 27; The OK lamp 72c that under the situation (light quantity that is received by light accepting part 37 is higher than the situation of the threshold value of regulation) that the top end face 11b of bottom electrode head 11B is fit to weld, lights; And be lower than the NG lamp 72d that lights under the situation of threshold value of regulation in the light quantity that receives by light accepting part 37.
In addition, in embodiment, even whether qualified be judged as in judging defective; Control device 3 is also imported the underproof signal from the output circuit of judging part J; Utilize electrode tip trimmer 18 to cut electrode tip again 11 at least 1 times, whether qualified judge once more, when this is judged; If be judged as defective once more; Servo torch 5 is moved in not shown electrode tip withdrawing device, electrode tip feedway, change power on cartridge 11U and bottom electrode head 11B together, transfer to next weld job.
In addition; Place, enlarging section at judging part J; Constitute upside is staggered with optical sensor 23 and the light period of downside with optical sensor 33 each other; With prevent upside with optical sensor 23 and downside with each two light-projecting portion 26,36 of optical sensor 33 and the mutual interference of light accepting part 27,37, prevent to delay work.
In addition, in the situation of embodiment, in the action of welding robot hand 1, upside always is set at optical sensor 33 with downside with optical sensor 23 and receives light from light-projecting portion 26,36 irradiates lights and the enough light accepting parts 27,37 of ability.Can certainly with embodiment constitute differently each time whether qualified after electrode tip trimmer 18 cutting when judging from light-projecting portion 26,36 irradiates lights.
And; Upside among these judging parts J comprises enlarging section etc. with optical sensor 23 and downside with the structure of optical sensor 33; Be known structure; Omit the explanation of these structures, detailed description is as the light-projecting portion 26,36 among the S of inspection portion of the application's characteristic and the arrangement (with reference to Fig. 4～8) of light accepting part 27,37.
At first; Like Fig. 6～shown in Figure 8; Upside be configured to not get into light-projecting portion of optical sensor 23 26 and light accepting part 27 in the relative up and down top end face 11b, 11b space H0 each other of whether qualified power on cartridge 11U and bottom electrode head 11B when judging but space H0 on every side with the mode relative with the top end face 11b of the cartridge 11U that powers on towards oblique upper, hold in the installing hole 45,46 that remains on keeper 40.In the situation of embodiment; Light-projecting portion 26 is cylindric for roughly with light accepting part 27; Make the lens section 26a, 27a on top central 11bu, with the light that can utilize top end face 11b reflection and utilize light accepting part 27 to receive by light-projecting portion 26 irradiations towards the top end face 11b of the cartridge 11U that powers on.Specifically, light-projecting portion 26 and light accepting part 27 set for mutual axial line U1, U2 be that mutual intersection point and the axial line X of above electrode tip 11U and bottom electrode head 11B are that center line is the line symmetry with central 11bu.And, in the situation of embodiment, light-projecting portion 26 and light accepting part 27 set for make axial line U1, U2 is mutually orthogonal intersects.
In addition; Space H0 be whether qualified when judging near relative up and down top end face 11b, the 11b space each other of power on cartridge 11U and bottom electrode head 11B, be until on the top end face 11b become and wide diameter portion 11c between the columned space of shoulder 11be of neighboring of boundary.
In addition; Like Fig. 6～shown in Figure 8; Downside be configured to not get in the space H0 with light-projecting portion of optical sensor 33 36 and light accepting part 37 and around the space H0 with the mode relative with the top end face 11b of bottom electrode head 11B below tiltedly, hold in the installing hole 47,48 that remains on keeper 40.In the situation of embodiment; Light-projecting portion 36 is cylindric for roughly with light accepting part 37; Make the lens section 36a, 37a on top central 11bb, with the light that can utilize top end face 11b reflection and utilize light accepting part 37 to receive by light-projecting portion 36 irradiations towards the top end face 11b of bottom electrode head 11B.Specifically, light-projecting portion 36 and light accepting part 37 set for mutual axial line B1, B2 be that mutual intersection point and the axial line X of above electrode tip 11U and bottom electrode head 11B are that the center line ground wire is symmetrical with central 11bb.And, in the situation of embodiment, light-projecting portion 36 and light accepting part 37 set for make axial line B1, B2 is mutually orthogonal intersects.
In addition, lens section 26a, 27a, 36a, the 37a of embodiment are made up of the globe lens of glass such as borosilicate glass.
And, keeper 40 form with the mode of vacating space H0 at least be provided with rounded opening through hole 41 and surround through hole 41 around position (surrounding wall portion) 42 utilize installing hole 45,46,47,48 to keep upside with the light-projecting portion 26 of optical sensor 23 and light accepting part 27, downside structure with the light-projecting portion 36 and the light accepting part 37 of optical sensor 33.
And in the situation of embodiment, installing hole 45,46 is positioned at the below of installing hole 47,48, is configured to through along overlapping up and down on the longitudinal section of the center O of the through hole 41 of the left and right directions of keeper 40.Promptly; Upside remains on the keeper 40 with following configuration with the light-projecting portion 36 and the light accepting part 37 of optical sensor 33 with the light-projecting portion 26 of optical sensor 23 and light accepting part 27, downside: upside is configured in than downside with the light-projecting portion 36 of optical sensor 33, the position that light accepting part 37 leans on the below with light-projecting portion 26, the light accepting part 27 of optical sensor 23, and overlapping along the vertical direction (overlooking overlapping).
And; Keeper 40 have bear the seat 43,44; Top end face 11b when the top end face 11b of power on cartridge 11U and bottom electrode head 11B whether qualified judged, 11b each other near the time, bear seat 43,44 and can accept each wide diameter portion 11c, 11c; And bear each wide diameter portion 11c, the corresponding concave shape of 11c that seat 43,44 formed and powered on cartridge 11U and bottom electrode head 11B, be equipped with through hole 41 in the central authorities of bearing seat 43,44.
In the situation of embodiment, like Fig. 7, shown in 8, through hole 41 forms the big φ 8 of diameter D1 (φ 6) than top end face 11b with inner diameter d, and the length dimension L of through hole 41 is about 11mm.In addition, in the situation of embodiment, use and bear seat 43, the 44 cartridge 11U that power on that accept and be the about 10mm littler (being 9.89mm specifically) than length dimension L with the mutual spacing distance SL of the top end face 11b of bottom electrode head 11B.In other words; Form the inner diameter d of the through hole 41 that bears seat 43,44 central authorities bigger than the diameter D1 of top end face 11b; Make and get in the through hole 41 each other reliably and relatively at the whether qualified top end face 11b that powers on cartridge 11U and bottom electrode head 11B when judging; Its result uses and to bear the cartridge 11U that powers on that seat 43,44 accepts and be the size littler than length dimension L with the mutual spacing distance SL of the top end face 11b of bottom electrode head 11B.
The lid 50 that is arranged on the S of inspection portion is hidden the optical fiber 25,28,35,38 that extends from light-projecting portion 26,36, light accepting part 27,37, is installed on the keeper 40.
And optical fiber 25,28,35,38 is had flexible pipe 62,63 and is covered through the through hole 56 of neck 52, main body 54, extends to judging part J.
In addition, the S of inspection portion constitutes the pipe joint 60 that can utilize factory air is configured on the rear end face of main body 54, and, make it connect the pore 58 that extends to through hole 41 from pipe joint 60, utilize factory air can suitably remove the dust in the through hole 41.
The user mode of the whether qualified judgment means M of embodiment is described, at first, if welding robot hand 1 carries out the spot welding of stipulated number, control device 3 just makes servo torch 5 move, and utilizes electrode tip trimmer 18 to cut power on cartridge 11U and bottom electrode head 11B.Then; To judge the whether qualified mode of the top end face 11b after cutting; Control device 3 moves servo torch 5, and makes the servomotor 6 of regulation, not shown servomotor work, makes the cartridge 11U that powers on relative up and down with bottom electrode head 11B; The axial line X of electrode tip 11 is alignd with the center O of through hole 41 and each other near, make each wide diameter portion 11c be connected to keeper among the S of inspection portion of whether qualified judgment means M and bear seat 43,44 about in the of 40.
At this moment, in whether qualified judgment means M, upside with optical sensor 23, downside with optical sensor 33 respectively from top end face 11b, the 11b irradiates light of light-projecting portion 26,36 to correspondence, utilize light accepting part 27,37 to receive the light of reflection.Then, if these catoptrical powers are higher than the threshold value of regulation, it is qualified then to utilize judging part J to be judged as, if be lower than the threshold value of regulation, then is judged as defective.Specifically; Be fit under the situation of welding at the top end face 11b of power on cartridge 11U or bottom electrode head 11B; The light quantity that is received by light accepting part 27,37 is higher than the threshold value of regulation, so OK lamp 72a, 72c light, and is opposite; Be lower than in the light quantity that is received by light accepting part 27,37 under the situation of threshold value of regulation, NG lamp 72b, 72d light.
In addition; In the situation of embodiment, always from light-projecting portion 26,36 irradiates lights, at ordinary times; NG lamp 72b, 72d light; If servo torch 5 is during the wide diameter portion 11c of will power on cartridge 11U and bottom electrode head 11B is by the stipulated time (about about 0.3～0.5 second) of bearing 43,44 last times of seat that is pressed in keeper 40, top end face 11b is good, and then OK lamp 72a, 72c light.
And if the top end face 11b of power on cartridge 11U and bottom electrode head 11B is fit to welding, then control device 3 makes 1 action of welding robot hand to carry out next weld job; At least one of cartridge 11U and bottom electrode head 11B is judged as defectively if power on, and then control device 3 inputs are from the underproof signal of the output circuit of judging part J, utilizes electrode tip trimmer 18 to cut again to power on cartridge 11U and bottom electrode head 11B at least 1 time; Whether qualified judge once more; When this is judged,, then transfer to next weld job if be judged as qualifiedly; If be judged as defective once more; Servo torch 5 is moved in not shown electrode tip withdrawing device, electrode tip feedway, change power on cartridge 11U and bottom electrode head 11B together, transfer to next weld job.
And; In the S of inspection portion of the whether qualified judgment means M of embodiment; As shown in Figure 6, upside does not get in the space H0 with the light-projecting portion 36 of optical sensor 33 and light accepting part 37 with the light-projecting portion of optical sensor 23 26 and light accepting part 27, downside and holding on every side and remain on the keeper 40 at space H0.And, keeper 40 also form with in the mode that relative up and down top end face 11b, 11b vacate space H0 each other through hole 41 is set at least, surrounding through hole 41 around surrounding wall portion 42 places keep upside with the light-projecting portion 26 of optical sensor 23 and light accepting part 27, downside structure with the light-projecting portion 36 and the light accepting part 37 of optical sensor 33.
Therefore, even fall attached to dust, the water droplet DW (with reference to Fig. 6) of the top 11a side of the cartridge 11U that powers on, these dusts, water droplet DW also transmit in wide diameter portion 11c, fall from the position of the top end face 11b of thin head, through through hole 41.Its result; These dusts or water droplet DW are difficult to attached to upside with on the light-projecting portion 26 of optical sensor 23 and light accepting part 27, the light-projecting portion 36 and light accepting part 37 of downside with optical sensor 33; Need not clean upside with the light-projecting portion 26 of optical sensor 23 and light accepting part 27, downside with maintenances such as the light-projecting portion 36 of optical sensor 33 and light accepting parts 37, use whether qualified judgment means M can without difficulty ground for a long time.
In addition, the upside top end face 11b that is maintained at relative up and down power on cartridge 11U and bottom electrode head 11B with the light-projecting portion 36 and the light accepting part 37 of optical sensor 33 with the light-projecting portion 26 of optical sensor 23 and light accepting part 27, downside, 11b space H0 each other around, be on the surrounding wall portion 42 around the through hole 41 of keeper 40.In other words; On the keeper 40 that upside is maintained at a ring-type with the light-projecting portion 36 and the light accepting part 37 of optical sensor 33 with the light-projecting portion 26 of optical sensor 23 and light accepting part 27, downside; Can shared maintenance position, so the S of inspection portion can constitute its structure simple and compactly.If form following configuration: when the lens section 26a that makes the top, 27a, 36a, 37a expose the ground configuration at the inner peripheral surface 42a of through hole 41; The inner peripheral surface 42a of this through hole 41 is done one's utmost near space H0 with the state that does not get into space H0; Then can further constitute keeper 40 self compactly, the S of inspection portion can be configured in compactly top end face 11b, the 11b of electrode of opposite up and down 11,11 mutual around.
Particularly in the situation of embodiment; The top of light-projecting portion 26,36, light accepting part 27,37, be that lens section 26a, 27a, 36a, 37a are configured to not to position to foreign side's spaced manner with the root 11d from electrode of opposite up and down 11,11; But do one's utmost near space H0, get in the wide diameter portion 11c, 11c Space H 1 each other of electrode of opposite up and down 11,11.In addition, this Space H 1 is to surround the space cylindraceous on every side of columned space H0.
Thereby, in the whether qualified judgment means M of the electrode tip of embodiment, can use without difficultyly, and can constitute the light-projecting portion 26,36 that is equipped with optical sensor and the S of inspection portion of light accepting part 27,37 compactly.
In addition; In embodiment; Upside is maintained on the keeper 40 with following configuration with the light-projecting portion 36 and the light accepting part 37 of optical sensor 33 with the light-projecting portion 26 of optical sensor 23 and light accepting part 27, downside: upside is configured in than downside with the light-projecting portion 36 of optical sensor 33, the position that light accepting part 37 leans on the below with light-projecting portion 26, the light accepting part 27 of optical sensor 23, and overlapping with light-projecting portion 36, the light accepting part 37 of optical sensor 33 at above-below direction and downside.
In this structure; At first; Upside is with light-projecting portion 26, the light accepting part 27 and light-projecting portion 36, the light accepting part 37 each other up and down overlappingly configuration of downside with optical sensor 33 of optical sensor 23; Therefore be not with the horizontal direction of overlapping face (in embodiment, being longitudinal section) quadrature along left and right directions on; The configuration upside is with the light-projecting portion 26 of optical sensor 23 and light accepting part 27, downside light-projecting portion 36 and the light accepting part 37 with optical sensor 33, can set the width dimensions BL (in embodiment for the size of fore-and-aft direction, with reference to Fig. 7) of the keeper 40 of this part little and compactly.
And in this structure, upside is configured in than downside with the light-projecting portion 36 of optical sensor 33, the position that light accepting part 37 leans on the below with light-projecting portion 26, the light accepting part 27 of optical sensor 23.Therefore; As shown in Figure 6; From observing with the light-projecting portion 36 of optical sensor 33, the horizontal direction of light accepting part overlapping face quadrature about in the of 37 with light-projecting portion 26, light accepting part 27 and the downside of optical sensor 23 with upside, for from upside with light-projecting portion 26 irradiations of optical sensor 23 and by track (optical track) BLU of the top end face 11b reflection of the cartridge 11U that powers on, the light that receives by light accepting part 27 then with shine with the light-projecting portion 36 of optical sensor 33 from downside and reflect, become near near cross one another state lens section 26a, the 36a, the lens section 27a, 37a by track (optical track) BLB of the light of light accepting part 37 receptions then by the top end face 11b of bottom electrode head 11B.Promptly; Compare with the situation that said structure is turned upside down; In other words be configured in than downside with the light-projecting portion 26 that makes upside with optical sensor 23, light accepting part 27 and compare by the situation of the position of top with light-projecting portion 36, the light accepting part 37 of optical sensor 33, in said structure, can be with the size CL part of optical track BLU, BLB intersection; Reduce to keep the gauge T of above-below direction of the keeper 40 of light-projecting portion, light accepting part as much as possible, can form the size of the above-below direction of keeper 40 compactly.
Thereby, in embodiment, can reduce the above-below direction of keeper 40 gauge T, with the width dimensions BL of the keeper 40 of the overlapped face quadrature of sensor, can further constitute the S of inspection portion compactly.
In addition; In embodiment; Upside with the light-projecting portion of optical sensor 23 26 and light accepting part 27 and downside with each lens section 26a, 27a, 36a, the 37a on the top separately of the light-projecting portion 36 of optical sensor 33 and light accepting part 37 be configured in space H0 around, and be configured to get into from the mutual top end face 11b of electrode of opposite 11 in the wide diameter portion 11c of root 11d side hole enlargement Space H 1 each other.
Therefore, in embodiment, around the axial line X of pair of electrical cartridge 11U, 11B and not radially divided the upside that can not set compactly with the light-projecting portion 26 of optical sensor 23, light accepting part 27, downside light-projecting portion 36, light accepting part 37 with optical sensor 33.
And; In embodiment; On keeper 40, be provided with and bear seat 43,44, the top end face 11b when the top end face 11b of cartridge 11U and bottom electrode head 11B that powers on, 11b whether qualified judged, 11b each other near the time, bear 43,44 and can accept each wide diameter portion 11c, 11c; And bear each wide diameter portion 11c, the corresponding concave shape of 11c that seat 43,44 formed and powered on cartridge 11U and bottom electrode head 11B, be equipped with through hole 41 in the central authorities of bearing seat 43,44.
Therefore; In embodiment; If whether qualified make when judging power on cartridge 11U and bottom electrode head 11B each other near; Make each wide diameter portion 11c be connected to keeper 40 correspondence bear the seat 43,44 on, each top end face 11b of then power on cartridge 11U and bottom electrode head 11B stably be configured in through hole 41 about opening near.Promptly; Each top end face 11b that can when judging each time, make the cartridge 11U that powers on, bottom electrode head 11B is stable with the light-projecting portion 36 and the allocation position for the light accepting part 37 of optical sensor 33 with the light-projecting portion 26 of optical sensor 23 and light accepting part 27, downside with respect to upside, can improve the whether qualified precision of judging.In other words; When judging each time; The mutual intersection point of axial line U1, U2 of light-projecting portion 26 and light accepting part 27 is alignd with the central 11bu of top end face 11b, and, the mutual intersection point of axial line B1, B2 of light-projecting portion 36 and light accepting part 37 is alignd with the central 11bb of top end face 11b; Each light accepting part 27,37 can receive reverberation reliably, can improve the whether qualified precision of judging.
And; Particularly in embodiment; When the seat 43,44 that bears with keeper 40 offsets when fetching the top end face 11b that judges power on cartridge 11U and bottom electrode head 11B whether qualified; The light-projecting portion 26 that upside uses optical sensor 23 and light accepting part 27 set and make that axial line U1, U2 are mutually orthogonal to intersect and be that central 11bu with the top end face 11b of the whether qualified cartridge 11U that powers on when judging is mutual intersection point; And the light-projecting portion 36 that downside uses optical sensor 33 and light accepting part 37 set and make that axial line B1, B2 are mutually orthogonal to intersect and be that central 11bb with the top end face 11b of whether qualified bottom electrode head 11B when judging is mutual intersection point.
Promptly; In embodiment; Upside becomes axial line X with respect to the electrode tip 11 45 ° of states that ground intersects that tilt with the light-projecting portion 26 of optical sensor 23, light accepting part 27, downside with light-projecting portion 36, the axial line U1 of light accepting part 37, U2, B1, the B2 of optical sensor 33, and is separately intersection point with the central 11bu of the top end face 11b of the electrode tip 11 judged, 11bb.Therefore, upside with the light-projecting portion 26 of optical sensor 23, light accepting part 27,, downside can make the length dimension and along the height dimension on the direction of the axial line X of electrode tip 11 about equally on the direction with the axial line X quadrature of electrode tip 11 respectively with light-projecting portion 36, the light accepting part 37 of optical sensor 33.Promptly; About upside with the light-projecting portion 26 of optical sensor 23, light accepting part 27, downside with the light-projecting portion 36 of optical sensor 33, the configuration space of light accepting part 37; Can make axial line X with electrode tip 11 is that the length dimension radially at center is impartial each other with the height dimension along the axial line X of electrode tip 11, and can both set lessly.Its result; Keep upside can set its height dimension (gauge) T, outside dimension compactly (apart from the size radially of the axial line X of electrode tip 11 with the keeper 40 of the light-projecting portion 36 of optical sensor 33, light accepting part 37 with the light-projecting portion 26 of optical sensor 23, light accepting part 27, downside; In other words, WL (with reference to Fig. 7,8) width dimensions).
Certainly; If do not consider above-mentioned aspect; Upside use optical sensor 23, downside use optical sensor 33 also can set into; In the catoptrical scope that can receive without barrier by the top end face 11b of electrode tip 11 reflection, the axial line U1, U2, B1, B2 that makes light-projecting portion 26,36, light accepting part 27,37 tilts less than 45 ° with the axial line X with respect to electrode tip 11 or tilts to surpass 45 ° intersecting angle and intersect.
And; In embodiment, upside forms lens section 26a, 27a, 36a, the 37a on top by glass such as borosilicate glasses and processes respectively with the light-projecting portion 36 and the light accepting part 37 of optical sensor 33 with the light-projecting portion 26 of optical sensor 23 and light accepting part 27, downside.Promptly; The lens section 26a on top, 27a, 36a, 37a also can be processed by synthetic resin such as Merlon; If but process by glass such as borosilicate glasses, then oil resistivity is good, and; Be difficult to when the cleaning of wiping dirt etc. scratch, therefore can improve upside with optical sensor 23, downside durability with optical sensor 33.
In addition, in embodiment, be center line and upside is configured in same side with the light-projecting portion 26 of optical sensor 23 and downside with the light-projecting portion 36 of optical sensor 33 with the center O of through hole 41.That is, in embodiment, light-projecting portion 26 is configured in the below of light-projecting portion 36, and, light accepting part 27 is configured in the below of light accepting part 37, light-projecting portion 26,36 is each other and light accepting parts 27,37 configuration overlappingly up and down respectively each other.But light-projecting portion 26,36 also can be configured in opposition side each other.That is, also can light accepting part 27 be configured in the below of light-projecting portion 36, and, light-projecting portion 26 is configured in the below of light accepting part 37, respectively with each other up and down overlapping mode dispose light-projecting portion 36 and light accepting part 27, light accepting part 37 and light-projecting portion 26.In this case, width dimensions, gauge before and after keeper 40 also can be set compactly.
Certainly; If do not consider above-mentioned aspect, the light-projecting portion 36, light accepting part 37 that the light-projecting portion 26, light accepting part 27 that upside uses optical sensor 23 and downside use optical sensor 33 also can be up and down not overlappingly the edge dispose as the circumferencial direction at center with the axial line X of electrode tip 11 with staggering.
In addition, in embodiment, upside with optical sensor 23, downside with optical sensor 33 in, used the ultrared LED of irradiation as light source, but also can use the light source of irradiation other visible lights etc. or irradiating laser.
Claims (6)
1. the whether qualified judgment means of an electrode tip, remaining on pair of electrodes capitiform on the welding gun becomes from the top end face that is used for connecting with workpiece to the root side hole enlargement,
The whether qualified judgment means of this electrode tip is through shining the light from the light-projecting portion of optical sensor to above-mentioned top end face; The catoptrical power that utilization is received by the light accepting part of above-mentioned optical sensor is judged above-mentioned top end face whether qualified of above-mentioned electrode tip; It is characterized in that
The upside that the top end face of the cartridge that powers on of the upside when above-mentioned optical sensor uses and disposes the mutual above-mentioned top end face of a pair of above-mentioned electrode tip with relative up and down mode whether qualified judged usefulness with the whether qualified downside of judging usefulness of the top end face of the bottom electrode head of optical sensor and downside with these two groups of optical sensors of optical sensor
The whether qualified judgment means of this electrode tip forms; Whether qualified when judging each other near above-mentioned power on cartridge and above-mentioned bottom electrode head around set the structure of inspection portion; This inspection portion has above-mentioned light-projecting portion and the above-mentioned light accepting part of above-mentioned upside with optical sensor; Above-mentioned downside is with the above-mentioned light-projecting portion and the above-mentioned light accepting part of optical sensor; And be used to keep above-mentioned light-projecting portion and the above-mentioned light accepting part of above-mentioned upside with optical sensor; Above-mentioned downside is with the above-mentioned light-projecting portion of optical sensor and the keeper of above-mentioned light accepting part
Above-mentioned upside is maintained on the keeper with following configuration with the above-mentioned light-projecting portion and the above-mentioned light accepting part of optical sensor: do not get in the relative up and down above-mentioned top end face space each other of above-mentioned power on cartridge and above-mentioned bottom electrode head; But around above-mentioned space, make the lens section on top with the mode relative with the top end face of the above-mentioned cartridge that powers on is the oblique upper of the mutual line symmetry of center line towards the axial line with above-mentioned electrode tip
Above-mentioned downside is maintained on the above-mentioned keeper with following configuration with the above-mentioned light-projecting portion and the above-mentioned light accepting part of optical sensor: do not get in the above-mentioned space; But the lens section that makes the top around the above-mentioned space with the mode relative with the top end face of above-mentioned bottom electrode head towards the axial line with above-mentioned electrode tip be the mutual line symmetry of center line tiltedly below
Above-mentioned keeper form with the mode of vacating above-mentioned space at least be provided with through hole and surround this through hole around the position keep above-mentioned upside with the above-mentioned light-projecting portion of optical sensor and above-mentioned light accepting part, above-mentioned downside with the above-mentioned light-projecting portion of optical sensor and the structure of above-mentioned light accepting part.
2. the whether qualified judgment means of electrode tip according to claim 1 is characterized in that,
Above-mentioned upside is maintained on the above-mentioned keeper with following configuration with the above-mentioned light-projecting portion and the above-mentioned light accepting part of optical sensor with the above-mentioned light-projecting portion of optical sensor and above-mentioned light accepting part, above-mentioned downside: above-mentioned upside is configured in than above-mentioned downside with the above-mentioned light-projecting portion of optical sensor, above-mentioned light accepting part and leans on the position of below with the above-mentioned light-projecting portion of optical sensor, above-mentioned light accepting part, and overlapping with the above-mentioned light-projecting portion of optical sensor, above-mentioned light accepting part with above-mentioned downside on above-below direction.
3. the whether qualified judgment means of electrode tip according to claim 1 is characterized in that,
Above-mentioned upside with the above-mentioned light-projecting portion of optical sensor, above-mentioned light accepting part and above-mentioned downside with each said lens portion on the top separately of the above-mentioned light-projecting portion of optical sensor, above-mentioned light accepting part be configured in above-mentioned space around, and be configured to get into from the mutual above-mentioned top end face of relative above-mentioned electrode tip in the wide diameter portion space each other of root side hole enlargement.
4. the whether qualified judgment means of electrode tip according to claim 1 is characterized in that,
Above-mentioned keeper has the seat of bearing; The top end face to the top end face of the above-mentioned cartridge that powers on and above-mentioned bottom electrode head carry out whether qualified make when judging top end face each other near the time; This bears each wide diameter portion from above-mentioned top end face to the root side hole enlargement that seat can be accepted above-mentioned each electrode tip; And this bears seat and forms and above-mentioned each wide diameter portion of the above-mentioned cartridge that powers on and the corresponding concave shape of above-mentioned each wide diameter portion of above-mentioned bottom electrode head, is equipped with above-mentioned through hole in these central authorities of bearing seat.
5. the whether qualified judgment means of electrode tip according to claim 4 is characterized in that,
Above-mentioned upside uses the above-mentioned light-projecting portion of optical sensor to set with above-mentioned light accepting part that axial line is mutually orthogonal to intersect in order to make, and is mutual intersection point with the central authorities of the top end face of the whether qualified above-mentioned cartridge that powers on when judging,
Above-mentioned downside uses the above-mentioned light-projecting portion of optical sensor to set with above-mentioned light accepting part that axial line is mutually orthogonal to intersect in order to make, and is mutual intersection point with the central authorities of the top end face of whether qualified above-mentioned bottom electrode head when judging.
6. the whether qualified judgment means of electrode tip according to claim 1 is characterized in that,
Above-mentioned upside is processed the said lens portion on top separately by glass with the above-mentioned light-projecting portion of optical sensor, above-mentioned light accepting part with above-mentioned light-projecting portion, light accepting part, the above-mentioned downside of optical sensor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011035478A JP5216882B2 (en) | 2011-02-22 | 2011-02-22 | Electrode tip pass / fail judgment device |
| JP2011-035478 | 2011-02-22 |
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| Publication Number | Publication Date |
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| CN102642075A true CN102642075A (en) | 2012-08-22 |
| CN102642075B CN102642075B (en) | 2015-09-02 |
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| CN201110194329.2A Active CN102642075B (en) | 2011-02-22 | 2011-07-08 | The whether qualified judgment means of electrode tip |
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| JP (1) | JP5216882B2 (en) |
| KR (1) | KR101859091B1 (en) |
| CN (1) | CN102642075B (en) |
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| CN111673254A (en) * | 2020-05-06 | 2020-09-18 | 浙江吉利汽车研究院有限公司 | Method and device for monitoring electrode wear state of resistance spot welding tongs |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102642075B (en) | 2015-09-02 |
| JP5216882B2 (en) | 2013-06-19 |
| JP2012170983A (en) | 2012-09-10 |
| KR101859091B1 (en) | 2018-05-17 |
| KR20120096391A (en) | 2012-08-30 |
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