CN1814388A - Ultrasonic bonding equipment and resulting bonding structure - Google Patents
Ultrasonic bonding equipment and resulting bonding structure Download PDFInfo
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- CN1814388A CN1814388A CNA2006100017652A CN200610001765A CN1814388A CN 1814388 A CN1814388 A CN 1814388A CN A2006100017652 A CNA2006100017652 A CN A2006100017652A CN 200610001765 A CN200610001765 A CN 200610001765A CN 1814388 A CN1814388 A CN 1814388A
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- 230000002093 peripheral effect Effects 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
- B29C66/81433—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
- B29C65/081—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations having a component of vibration not perpendicular to the welding surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
- B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
- B29C66/81433—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
- B29C66/81435—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned comprising several parallel ridges, e.g. for crimping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3468—Batteries, accumulators or fuel cells
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention provides an ultrasonic bonding equipment and a bonding construction body to increase the strength of a joined part of a work after the ultrasonic bonding is completed. An ultrasonic bonding equipment has an anvil 110 and a horn 140 arranged facing the anvil, and performs the ultrasonic bonding of the work to be bonded by pressurizing and oscillating electrode tabs 210 as a plurality of works overlapped and set on the anvil by the horn. Gripping force on the outer side part is set to be smaller than the gripping force on the inner side part in a gripping area to the works by the anvil and the horn.
Description
Technical field
The present invention relates to a kind of ultrasonic bonding equipment and stacked a plurality of thing ultrasonic waves that are engaged are engaged the junction structure that forms; Above-mentioned ultrasonic bonding equipment has the loudspeaker of anvil block and relative configuration with this anvil block.
Background technology
Ultrasonic bonding equipment, be the anvil block and the joining tool that is called loudspeaker that is provided with teat with the surface, clamp overlapping for example 2 metallic plates (of the same race or xenogenesis), it is applied the pressure (hold) of regulation, make the loudspeaker linear reciprocating motion engage (the Japanese kokai publication hei 9-239567 communique and the Japanese kokai publication hei 10-225779 communique) of these metallic plates by ultrasonic vibration simultaneously.
Ultrasonic bonding equipment is removed the impurity of oxide-film etc. by the contact-making surface friction that makes 2 metallic plates in use, and the clean face of metal is contacted each other, carries out solid phase by the frictional heat that produces and engages.
Yet, in ultrasonic bonding equipment, when making metal vibrating plate, the metallic plate pressurization is invaded in the metallic plate in order joining tool and metallic plate to be interfixed and it is become one, make the teat that is located on the joining tool.
But, during making metal vibrating plate, owing to be under the state of teat to the metallic plate pressurization, to vibrate, so can produce the phenomenon that teat is further invaded metallic plate.Since this phenomenon, the metallic plate thickness of slab attenuation of teat periphery, and when tensile load and vibration etc. acted on the metallic plate junction surface that engages after finishing, this junction surface can produce be full of cracks, sometimes fracture.
That is, carrying out metallic plate when engaging, the metallic plate of by anvil block and loudspeaker clamping control the zone, make its vibration by loudspeaker, on the other hand, not by the non-zone of controlling of the metallic plate of anvil block and loudspeaker clamping, because of inertia desires to rest on its position.Therefore, control zone and non-point of interface of controlling the zone stretch in when vibration the most severe, so be easy to generate be full of cracks.In addition, after metallic plate was engaged, the part in the thickness of slab attenuation of outside portion, junction surface was easy to generate the stress that is caused by external force and concentrates, and becomes the reason that produces be full of cracks.
Summary of the invention
The present invention makes in order to address the above problem, and its objective is to improve the intensity that ultrasonic wave engages the junction surface that is engaged thing after finishing.
To achieve these goals, technical scheme of the present invention is as follows.
The ultrasonic bonding equipment of technical scheme 1 record, loudspeaker with anvil block and relative configuration with this anvil block, by with above-mentioned loudspeaker to overlapping be arranged at above-mentioned anvil block a plurality of be engaged the thing pressurization and add shake, carry out ultrasonic wave and engage thereby this is engaged thing, it is characterized in that
Above-mentioned anvil block and above-mentioned loudspeaker to being engaged the zone of controlling of thing, the hold of direction of vibration outside portion that is set at loudspeaker is littler than the hold of inside portion.
The ultrasonic bonding equipment of technical scheme 5 records, loudspeaker with anvil block and relative configuration with this anvil block, by with above-mentioned loudspeaker to overlapping be arranged at above-mentioned anvil block a plurality of be engaged the thing pressurization and add shake, carry out ultrasonic wave and engage thereby this is engaged thing, it is characterized in that
Above-mentioned anvil block and above-mentioned loudspeaker have respectively can be engaged a plurality of teats that thing contacts;
In above-mentioned anvil block and above-mentioned loudspeaker among a plurality of teats of at least one side, the formation than the teat of inside portion is big at interval at interval to be set at the formation of teat of outside portion.
The junction structure of technical scheme 7 record has stacked a plurality of things that are engaged, it is characterized in that,
Above-mentioned stacked a plurality of things that are engaged shake and are engaged by ultrasonic wave by from the outside it being pressurizeed and adding, and, be formed with a plurality of impressions that cause by pressurization at above-mentioned stacked a plurality of outer surfaces that are engaged thing;
In above-mentioned a plurality of impressions, the degree of depth of the impression of the depth ratio inside portion of the impression of outside portion is little.
The junction structure of technical scheme 8 record has stacked a plurality of things that are engaged, it is characterized in that,
Above-mentioned stacked a plurality of things that are engaged shake and are engaged by ultrasonic wave by from the outside it being pressurizeed and adding, and, be formed with a plurality of impressions that cause by pressurization at above-mentioned stacked a plurality of outer surfaces that are engaged thing;
In above-mentioned a plurality of impressions, the bottom surface of the impression of outside portion is the inclined plane that the outside degree of depth towards junction structure reduces.
The junction structure of technical scheme 11 record has stacked a plurality of things that are engaged, it is characterized in that,
Above-mentioned stacked a plurality of things that are engaged shake and are engaged by ultrasonic wave by from the outside it being pressurizeed and adding, and, on above-mentioned stacked a plurality of outer surfaces that are engaged thing, be formed with a plurality of impressions that cause by pressurization;
In above-mentioned a plurality of impressions, the internal face of the impression of outside portion forms: in the engaging zones that is formed by this impression, the inclination of the internal face of the inboard of the rake ratio junction structure of the internal face in the outside of junction structure is mild.
The junction structure of technical scheme 12 record has stacked a plurality of things that are engaged, it is characterized in that,
Above-mentioned stacked a plurality of things that are engaged shake and are engaged by ultrasonic wave by from the outside it being pressurizeed and adding, and, be formed with a plurality of impressions that cause by pressurization at above-mentioned stacked a plurality of outer surfaces that are engaged thing;
In above-mentioned a plurality of impressions, the formation of the impression of outside portion interval is bigger at interval than the formation of the impression of inside portion.
According to the invention of technical scheme 1,7,8,11 records, the teat of outside portion lacks than the intrusion amount of inside portion the intrusion amount that is engaged thing.Thus, can make and be engaged thing and control the thickness of slab reduction that the thickness of slab reduction of the outside portion in the zone is lower than the inside portion.Its result, the thickness of slab at the impression position of the thickness ratio inside portion at the impression position of outside portion is big.Therefore, the fracture strength at the impression position of outside portion is than the fracture strength height at the impression position of inside portion, thereby can prevent to produce be full of cracks at the edge at junction surface.
That is, during external force that the junction surface effect that is engaged thing after joint finished is caused by tensile load or vibration etc., external force is at first concentrated the part that acts on thickness of slab attenuation in the outside portion, junction surface that is engaged thing.At this, because the thickness of slab reduction of outside portion is lower than the thickness of slab reduction of inside portion, so, can suitably guarantee the thickness of slab of external force concentrated part.Therefore, can be than improving the fracture strength that is engaged thing itself before.Especially can improve the fatigue strength that low load is acted on etc. repeatedly.
Invention according to technical scheme 8,11 records at the engaging zones of outside portion impression, near the outer rim of this engaging zones, diminishes near the outer rim bond strength, more gradually so the variation of bond strength is slow.Therefore, when the external force that causes when tensile load or vibration etc. acts on the junction surface, can relax the stress that external force causes and concentrate.
Invention according to technical scheme 5,12 records is formed on and is engaged the lip-deep impression of beyond the region of objective existence interval each other, is that the outside portion is bigger than the inside portion, so, can prevent from the adjacent indentations of outside portion, to produce phenomenon of rupture chainly.
Description of drawings
Fig. 1 is the general structural map of the ultrasonic bonding equipment of an embodiment of the present invention.
Fig. 2 is the local approximate three-dimensional map of the ultrasonic bonding equipment of present embodiment.
Fig. 3 is as the general structural map that is engaged the pancake monocell of thing.
Fig. 4 is the figure of expression with the state of the electrode plates of the ultrasonic bonding equipment joint monocell of present embodiment.
Fig. 5 is the local amplification sectional view that is engaged thing that is engaged by ultrasonic bonding equipment shown in Figure 4.
Fig. 6 is the figure of the variation of expression teat shape.
Fig. 7 is the figure of expression with the state of the electrode plates of the ultrasonic bonding equipment joint monocell of another embodiment.
Fig. 8 is the local amplification sectional view of junction structure, and this junction structure has a plurality of things that are engaged that engaged by ultrasonic bonding equipment shown in Figure 7.
Fig. 9 is the distribution map of the bond strength in the engaging zones of inside portion impression.
Figure 10 is the distribution map of the bond strength in the engaging zones of outside portion impression.
Figure 11 is the figure of expression with the state of the electrode plates of the ultrasonic bonding equipment joint monocell of another embodiment.
Figure 12 is the local amplification sectional view of junction structure, and this junction structure has a plurality of things that are engaged that engaged by ultrasonic bonding equipment shown in Figure 11.
Figure 13 is the sectional view of expression with the state of the electrode plates of the ultrasonic bonding equipment joint monocell of another embodiment.
Figure 14 is the vertical view of the anvil block shown in Figure 13.
Figure 15 is the local amplification sectional view of junction structure, and this junction structure has a plurality of things that are engaged that engaged by Figure 13 and ultrasonic bonding equipment shown in Figure 14.
The specific embodiment
Below, the embodiment that present invention will be described in detail with reference to the accompanying.
Fig. 1 is the general structural map of the ultrasonic bonding equipment of an embodiment of the present invention.Fig. 2 is the local approximate three-dimensional map of the ultrasonic bonding equipment of present embodiment.Fig. 3 is as the general structural map that is engaged the pancake monocell of thing.Fig. 4 is the figure of expression with the state of the electrode plates of the ultrasonic bonding equipment joint monocell of present embodiment.
As depicted in figs. 1 and 2, ultrasonic bonding equipment 100 has anvil block 110, loudspeaker 140, ultrasonic vibrator 170 and pressue device 180.Anvil block 110 is instruments of accepting the fixation side of ultrasonic vibration in ultrasonic bonding equipment 100.Loudspeaker 140 are the parts that the ultrasonic vibration that ultrasonic vibrator 170 produces passed to workpiece (being engaged thing).Loudspeaker 140 have loudspeaker contact 150, and this loudspeaker contact 150 is formed on the leading section of loudspeaker 140, are the parts that contacts with workpiece.Pressue device 180 has pushing pad 181, and this pushing pad 181 above-below direction shown in the arrow in the figure is moved.Thus, pressue device 180 can push loudspeaker 140 with the pressure of regulation towards the below.
In addition, ultrasonic bonding equipment 100 also has the lowering or hoisting gear 190 that makes loudspeaker 140 moving up and down.Lowering or hoisting gear 190 has guide member 191, can make loudspeaker 140 and ultrasonic vibrator 170 along this guide member 191 towards figure in the above-below direction shown in the arrow move.
In the present embodiment, under the state that loudspeaker 140 have been risen, be provided as the electrode plates 210 of the monocell 200 of workpiece (being engaged thing), it is positioned on the anvil block 110.After the workpiece mounting, loudspeaker 140 are descended, make loudspeaker contact 150 and workpiece butt by lowering or hoisting gear 190.Then, pressue device 180 pushes loudspeaker 140 toward the below.The ultrasonic vibration of the horizontal direction shown in the A-B among that loudspeaker 140 are subjected to being produced by ultrasonic vibrator 170, Fig. 2, and, be subjected to plus-pressure 180 that produce by pressue device, the vertical lower shown in the C in Fig. 2.That is, loudspeaker contact 150 is pressurizeed on 210 pairs of anvil blocks 110 of electrode plates, pressurizeing and making loudspeaker contact 150 ultrasonic vibrations simultaneously.In addition, electrode plates 210 is general names (with reference to Fig. 3) of electrode plates 210A and 210B.Anvil block 110 is installed on the clamp base 160.
Be formed with on the surface of anvil block 110 can be engaged a plurality of teats 111,112 that thing contacts.In addition, also be formed with on the surface that can load and unload the loudspeaker contact 150 that is installed in freely on the loudspeaker 140 can be engaged a plurality of teats 151,152 (with reference to Fig. 4) that thing contacts.These teats are pressurized and invade and to be engaged in the thing, thereby, anvil block 110 and loudspeaker contact 150 can be respectively with respectively be engaged thing and interfix and be one.In addition, the detailed construction about anvil block 110 and loudspeaker contact 150 will illustrate below.
Monocell 200 is stacked secondary cells of flat rectangular shape as shown in Figure 3, comprises at least anodal layer and negative electrode layer are stacked gradually the laminate type battery unit 220 that forms.For example, has the disclosed structure of TOHKEMY 2003-059486 communique.The external packing material of monocell 200 is to adopt laminated film, is engaged by thermal welding by monocell 200 circumferences and seals built-in battery unit 220.
Length direction two sides extraction electrode pole piece 210A, 210B from monocell 200.Electrode plates 210A is positive electrode plates, is made of aluminium foil.On the other hand, electrode plates 210B is the electrode plates of bearing, and is made of Copper Foil.In the present embodiment, as shown in Figure 3, two monocells are leaned against privately fit (the formed protuberance of the battery unit of two monocells is fitted two monocells toward the outer side), and the one-sided positive electrode pole piece 210A with monocell engages with the negative electrode pole piece 210B ultrasonic wave of another battery of homonymy respectively.In addition, among Fig. 3 * mark, the position of the teat butt of expression anvil block 110 and loudspeaker contact 150.
In ultrasonic bonding equipment 100 of the present invention, be engaged the controlling in the zone of electrode plates 210 of thing in 150 pairs of conducts of loudspeaker contact of anvil block 110 and loudspeaker 140, be set at the hold of the hold of outside portion less than the inside portion.Hold described here is meant the power of controlling workpiece with loudspeaker 140 and anvil block 110.
More particularly, as shown in Figure 4, among a plurality of teats on the loudspeaker contact 150 of anvil block 110 and loudspeaker 140, be set at the height H i of the height H o of outermost teat 111,151 less than the teat 112,152 of inside portion.Teat 111,112,151 and 152 for example is the front end of quadrangular pyramid nearby to be cut away and the quadrangular pyramid platform shape that obtains, but also can be other shape of the frustum of a cone etc.But, also can be set at the height of the height of either party's outside portion teat in anvil block 110 and the loudspeaker contact 150 less than the inside portion teat.
Below, to using ultrasonic bonding equipment 100 situation that two monocell ultrasonic waves engage is described.
As shown in Figure 4, overlapping the negative electrode pole piece 210B of the positive electrode pole piece 210A of monocell 200 and another monocell 200, be positioned on the anvil block 110, by the top of loudspeaker contact 150, apply plus-pressure vertically downward from electrode plates 210A.
At this moment, owing to formed impression by teat, controlling in the zone of the electrode plates 210 of being controlled by anvil block 110 and loudspeaker contact 150, the teat 112,152 that the amount of its thickness of slab attenuate is the outside portion, promptly highly low teat 111,151 attenuate amount nearby is promptly highly higher than the inside portion is nearby little.
Then, Yi Bian apply vertically downward plus-pressure, Yi Bian the loudspeaker contact 150 that makes loudspeaker 140 is along illustrated A-B direction ultrasonic vibration.The frictional heat that produces by ultrasonic vibration engages electrode plates 210A and electrode plates 210B solid phase then.
Fig. 5 is the local amplification sectional view of junction structure, and this junction structure has a plurality of things that are engaged that engaged by ultrasonic bonding equipment shown in Figure 4.Stacked a plurality of conducts are engaged the electrode plates 210 of thing, by shaking and engaged by ultrasonic wave by from the outside it being pressurizeed and adding, and are formed with a plurality of impressions that caused by pressurization at the outer surface of electrode plates 210.And in a plurality of impressions, the depth D o of the impression 211 of outside portion is less than the depth D i of the impression 212 of inside portion.
As mentioned above, according to present embodiment, to the controlling in the zone of electrode plates 210, be set at the hold of the hold of outside portion less than the inside portion at anvil block and loudspeaker.Therefore, the teat 111 of outside portion and the intrusion amount of 151 pairs of electrode plates 210 are less than the intrusion amount of inside portion.Thus, can make the thickness of slab reduction of controlling the outside portion in the zone of electrode plates 210 be lower than the thickness of slab reduction of inside portion.As a result, the thickness of slab To at impression 211 positions of outside portion is greater than the thickness of slab Ti at impression 212 positions of inside portion.Therefore, the fracture strength at outside portion impression 211 positions is higher than the fracture strength at inside portion impression 212 positions, thereby can prevent the be full of cracks at edge, junction surface 215 (with reference to Fig. 3).
That is, when the external force of tensile load or vibration etc. acts on the junction surface 215 that engages the electrode plates 210 after finishing, external force at first concentrate the junction surface 215 that acts on electrode plates 210 the place, outside portion the thickness of slab attenuate part on.At this, because the thickness of slab reduction of outside portion is littler than the thickness of slab reduction of inside portion, so, can suitably guarantee the thickness of slab of external force concentrated part.Therefore, and compare before, can improve the fracture strength of electrode plates 210 self, especially improve the fatigue strength that low load is acted on etc. repeatedly.
In addition, in the present embodiment, teat the 111, the 151st, its front end are nearby than the bigger quadrangular pyramid platform shape of teat 112,152 excisions, and be different with the shape of teat 112 and 152, but the present invention is not limited thereto.In the present invention, for example teat 111,151 also can be identical with the shape (leading section shape) of teat 112,152, has only reduced height.
In addition, it is quadrangular pyramid platform shape that teat does not limit, and for example, also can form teat 111x, the 112x of ridge shape as shown in Figure 6 on anvil block 110x.In addition, on loudspeaker contact 150, also can form the teat of same ridge shape.At this, the teat of ridge shape forms: the moving direction quadrature that is caused by ultrasonic vibration of the length direction of teat and loudspeaker contact 150.Thus, can firmly and effectively control workpiece, ultrasonic vibration is passed to workpiece.
In addition, in the present invention, as long as it is littler than the hold of inside portion to set the hold of loudspeaker direction of vibration outside portion at least.That is, in the present embodiment, as long as it is little to set the teat height of the aspect ratio inside portion of the teat of loudspeaker direction of vibration outside portion at least.But the hold that preferably is set at whole peripheral part is littler than the hold of inside portion, can obtain better effect like this.
Fig. 7 is the figure of expression with the state of the electrode plates of the ultrasonic bonding equipment joint monocell of another embodiment.Present embodiment is different from the embodiment described above aspect the structure of a plurality of teats of the loudspeaker contact 150a of anvil block 110a and loudspeaker 140.In addition with above-mentioned embodiment in common part, omit its explanation.
In the present embodiment, to in a plurality of teats on the loudspeaker contact 150a of anvil block 110a and loudspeaker 140, outermost teat 111a, 151a implemented chamfer machining, it is the inclined plane 113,153 of rectilinear form towards the cross section that the outside left height reduces that this chamfer machining is used for forming respectively from inside line.At this, be formed on an inclined plane on the teat, for example be with respect to the horizontal plane to have the roughly continuous face of certain angle α.But the inclined plane angle of teat 111a and teat 151a also can be inequality.In addition, also can implement above-mentioned chamfer machining to the teat of either party's outside portion among anvil block 110a and the loudspeaker contact 150a.
Fig. 8 is the local amplification sectional view of junction structure, and this junction structure has a plurality of things that are engaged that engaged by ultrasonic bonding equipment shown in Figure 7.Stacked a plurality of conducts are engaged the electrode plates 210 of thing, shake and are engaged by ultrasonic wave by from the outside it being pressurizeed and adding, and be formed with a plurality of impressions that caused by pressurization at the outer surface of electrode plates 210.And among a plurality of impressions, the bottom surface 221 of the impression 211a of outside portion is inclined planes that the outside degree of depth towards junction structure reduces.In the present embodiment, the 221 formation cross sections, bottom surface of the impression 211a of outside portion are the inclined plane of rectilinear form.
In Fig. 8,, represent the engaging zones of effective bonding electrodes pole piece 210A and electrode plates 210B as the electrode plates 210 that the is engaged thing zone between zone and CD that is crushed between prescribed depth D or the AB more than the D.On the other hand, the not disengaged zone of bonding electrodes pole piece 210A and electrode plates 210B is represented in the zone in the zone between BC and the some D outside.
In other words, in the present embodiment, the internal face of the impression 211a of outside portion forms: in the engaging zones (zone between CD) of this impression, the inclination of the internal face 231i of the inboard of the rake ratio junction structure of the internal face 231o in the outside of junction structure is mild.
Therefore, according to present embodiment, in the engaging zones of the impression 211a of outside portion, be set at more near the outside of this engaging zones, hold is more little, and teat reduces more to the intrusion amount that is engaged thing.Thus, can make the outer rim thickness of slab decrease nearby in the zone of controlling of electrode plates 210 be lower than thickness of slab decrease than outer rim inside part.As a result, present embodiment also can obtain the effect same with above-mentioned embodiment.
Fig. 9 is the distribution map of the bond strength in the engaging zones of impression 212a of inside portion.Figure 10 is the distribution map of the bond strength in the engaging zones of outside portion impression 211a.Bond strength is meant the structural strength of junction surface to loading after the ultrasonic wave joint is finished.At this, teat is more little to the intrusion amount that is engaged thing, and it is more little to be engaged thing pushing force each other, and bond strength is more little.As shown in figure 10, in the engaging zones (zone between CD) of the impression 211a of outside portion, near the outer rim of this engaging zones, more near outer rim, bond strength diminishes gradually, so the variation of bond strength is mild.
Therefore, according to present embodiment, further, when the external force of tensile load or vibration etc. acts on the junction surface 215, can relax the stress that external force causes and concentrate.
In addition,, implemented the medial end 114 and 154 on the inclined plane on the teat of chamfer machining, by powerfully by being pressed in as being engaged on the electrode plates 210 of thing, so the advantage that has the bond strength of this part to improve according to present embodiment.
Figure 11 is expression engages the electrode plates of monocell with the ultrasonic bonding equipment of another embodiment a state.Present embodiment is different from the embodiment described above aspect the structure of a plurality of teats of the loudspeaker contact 150b of anvil block 110b and loudspeaker 140.In addition, the part common with above-mentioned embodiment omitted its explanation.
In the present embodiment, to in a plurality of teats of the loudspeaker contact 150b of anvil block 110b and loudspeaker 140, outermost teat 111b, 151b implemented the processing of R angle, this R angle processing be used for forming respectively reduce towards the outside left height from inside line, the cross section is the inclined plane 115,155 of circular shape roughly.But the radius of curvature of the roughly circular shape on the inclined plane of teat 111b and teat 151b can be inequality.In addition, also can implement above-mentioned R angle processing to the teat of either party's outside portion among anvil block 110b and the loudspeaker contact 150b.
Figure 12 is the local amplification sectional view of junction structure, and this junction structure has a plurality of things that are engaged that engaged by ultrasonic bonding equipment shown in Figure 11.Stacked a plurality of conducts are engaged the electrode plates 210 of thing, shake and are engaged by ultrasonic wave by from the outside it being pressurizeed and adding, and be formed with a plurality of impressions that caused by pressurization at the outer surface of electrode plates 210.And the bottom surface 225 of impression 211b in a plurality of impressions, the outside portion is inclined planes that the outside degree of depth towards junction structure reduces.In the present embodiment, to form cross sections be the inclined plane of circular shape roughly in the bottom surface 225 of the impression 211b of outside portion.
In Figure 12,, represent the engaging zones of effective bonding electrodes pole piece 210A and electrode plates 210B as the electrode plates 210 that the is engaged thing zone between zone and CD that is crushed between prescribed depth D or the AB more than the D.On the other hand, the not disengaged zone of bonding electrodes pole piece 210A and electrode plates 210B is represented in the zone in the zone between BC and the some D outside.
In other words, in the present embodiment, the internal face of the impression 211b of outside portion forms: in the engaging zones (zone between CD) of this impression, the inclination of the internal face 235i of the inboard of the rake ratio junction structure of the internal face 235o in the outside of junction structure is mild.
Therefore, according to present embodiment, in the engaging zones of the impression 211b of outside portion, be set at more near the outside of this engaging zones, hold is more little, and teat reduces the intrusion amount that is engaged thing.Thus, the outer rim thickness of slab decrease nearby in the zone of controlling of electrode plates 210 is lower than than the outer rim thickness of slab decrease of part more in the inner part.As a result, present embodiment also can obtain the effect same with above-mentioned embodiment.
In addition, in the present embodiment, with Fig. 7 to embodiment shown in Figure 10 similarly, in the engaging zones (zone between CD) of the impression 211b of outside portion, near the outer rim of this engaging zones, more near outer rim, bond strength diminishes gradually, so the variation of bond strength is mild.Therefore, according to present embodiment, when the external force of tensile load or vibration etc. affacts on the junction surface 215, can relax the stress that external force causes and concentrate.In addition, according to present embodiment owing to implemented the medial end 116,156 on the inclined plane on the teat of R angle processing, by powerfully by being pressed in as being engaged on the electrode plates 210 of thing, so, the advantage that has the bond strength of this part to improve.
In addition, according to present embodiment, owing to formed circle in the bight in the outside of outside portion impression 211b, so, can relax stress more and concentrate.Thus, when carrying out the ultrasonic wave joint and after engaging, there is load to do the time spent, can both prevents from more effectively to produce and chap.
Figure 13 is the sectional view of expression with the state of the electrode plates of the ultrasonic bonding equipment joint monocell of another embodiment.Figure 14 is the vertical view of anvil block shown in Figure 13.Present embodiment is different from the embodiment described above aspect the structure of a plurality of teats of the loudspeaker contact 150c of anvil block 110c and loudspeaker 140.In addition, the part common with above-mentioned embodiment omitted its explanation.
In the present embodiment, in a plurality of teats of the loudspeaker contact 150c of anvil block 110c and loudspeaker 140, the formation than inside portion teat 158 is big at interval at interval to be set at the formation of outermost teat 157.But the formation that also can be set at either party's outside portion teat 157 among anvil block 110c and the loudspeaker contact 150c is bigger than the formation interval of inside portion teat 158 at interval.In addition, the formation of the teat 157 of outside portion size at interval is arbitrarily, is not limited to the interval of a teat.In addition, Figure 13 sectional view that to be expression dissect with the vertical face of the teat 157 by the outside portion only.At this, teat 157,158 for example is quadrangular pyramid platform shape.In addition, the teat of loudspeaker contact similarly forms with the teat of anvil block shown in Figure 12.
Figure 15 is the local amplification sectional view of junction structure, and this junction structure has a plurality of things that are engaged that engaged by Figure 13 and ultrasonic bonding equipment shown in Figure 14.In addition, Figure 15 sectional view that to be expression dissect with the vertical face by outside portion impression 217 only.Stacked a plurality of conducts are engaged the electrode plates 210 of thing, and shake and engaged by from the outside it being pressurizeed and adding by ultrasonic wave, and, be formed with a plurality of impressions that cause by pressurization at the outer surface of electrode plates 210.And among a plurality of impressions, the formation of outside portion impression 217 formation than inside portion impression at interval is big at interval.
Like this, according to the ultrasonic bonding equipment of present embodiment, the formation interval of the teat 157 of setting outside portion is bigger at interval than the formation of the teat 158 of inside portion.Therefore, by the impression interval each other that teat forms on the outer surface of electrode plates 210, be that the outside portion is bigger than the inside portion, so, can prevent to produce on the adjacent indentations in the outside portion phenomenon of rupture chainly with being connected.
In addition, with Fig. 4 to embodiment shown in Figure 6 similarly, to other embodiment shown in Figure 15, the teat of loudspeaker direction of vibration outside portion can form the form different with the teat of inside portion at least at Fig. 7.But the teat of best whole peripheral part forms the form different with the inside portion teat, can obtain better effect like this.
The present invention is not limited to above-mentioned embodiment, can do various modifications within the scope of the claims.
For example, in the above-described embodiment, what enumerate as the example of soldered thing is the electrode plates of monocell, but soldered thing is not limited thereto.In addition, be located at the shape of teat of the loudspeaker contact of anvil block and loudspeaker, also not limiting is illustrated shape, can be shape arbitrarily.In addition, also can make up in the structure of teat in above-mentioned a plurality of embodiment any 2 or 2 with on implement.
Claims (13)
1. ultrasonic bonding equipment has the loudspeaker of anvil block and relative configuration with this anvil block, by being arranged on a plurality of on the above-mentioned anvil block and being engaged the thing pressurization and adding and shake overlapping with above-mentioned loudspeaker, carries out ultrasonic wave and engages thereby this is engaged thing, it is characterized in that,
To being engaged the controlling in the zone of thing, the hold of direction of vibration outside portion of setting loudspeaker is littler than the hold of inside portion at above-mentioned anvil block and above-mentioned loudspeaker.
2. ultrasonic bonding equipment according to claim 1 is characterized in that,
Above-mentioned anvil block and above-mentioned loudspeaker have respectively can be engaged a plurality of teats that thing contacts;
In above-mentioned anvil block and above-mentioned loudspeaker among a plurality of teats of at least one side, the height of teat of aspect ratio inside portion of setting outermost teat is little.
3. ultrasonic bonding equipment according to claim 1 is characterized in that,
Above-mentioned anvil block and above-mentioned loudspeaker have respectively can be engaged a plurality of teats that thing contacts;
To in a plurality of teats of at least one side in above-mentioned anvil block and the above-mentioned loudspeaker, outermost teat implemented chamfer machining, this chamfer machining be used to form reduce towards the outside left height from inside line, the cross section is the inclined plane of rectilinear form.
4. ultrasonic bonding equipment according to claim 1 is characterized in that,
Above-mentioned anvil block and above-mentioned loudspeaker have respectively can be engaged a plurality of teats that thing contacts;
To in a plurality of teats of at least one side in above-mentioned anvil block and the above-mentioned loudspeaker, outermost teat implemented R angle processing, this R angle processing be used to form reduce towards the outside left height from inside line, the cross section is the inclined plane of circular shape roughly.
5. ultrasonic bonding equipment has the loudspeaker of anvil block and relative configuration with this anvil block, by being arranged on a plurality of on the above-mentioned anvil block and being engaged the thing pressurization and adding and shake overlapping with above-mentioned loudspeaker, carries out ultrasonic wave and engages thereby this is engaged thing, it is characterized in that,
Above-mentioned anvil block and above-mentioned loudspeaker have respectively can be engaged a plurality of teats that thing contacts;
In a plurality of teats of at least one side, the formation interval of the teat of setting outside portion is bigger at interval than the formation of the teat of inside portion in above-mentioned anvil block and above-mentioned loudspeaker.
6. according to each described ultrasonic bonding equipment in the claim 1 to 5, it is characterized in that, above-mentionedly be engaged the electrode plates that thing is the pancake monocell.
7. junction structure has stacked a plurality of things that are engaged, it is characterized in that,
Above-mentioned stacked a plurality of things that are engaged shake and are engaged by ultrasonic wave by from the outside it being pressurizeed and adding, and are formed with a plurality of impressions that caused by pressurization at above-mentioned stacked a plurality of outer surfaces that are engaged thing;
In above-mentioned a plurality of impressions, the degree of depth of the impression of the depth ratio inside portion of the impression of outside portion is little.
8. junction structure has stacked a plurality of things that are engaged, it is characterized in that,
Above-mentioned stacked a plurality of things that are engaged shake and are engaged by ultrasonic wave by from the outside it being pressurizeed and adding, and are formed with a plurality of impressions that caused by pressurization at above-mentioned stacked a plurality of outer surfaces that are engaged thing;
In above-mentioned a plurality of impressions, the bottom surface of the impression of outside portion is the inclined plane that the outside degree of depth towards junction structure reduces.
9. junction structure according to claim 8 is characterized in that, the bottom surface of the impression of above-mentioned outside portion is that the cross section is the inclined plane of rectilinear form.
10. junction structure according to claim 8 is characterized in that, the bottom surface of the impression of above-mentioned outside portion is that the cross section is the inclined plane of circular shape roughly.
11. a junction structure has stacked a plurality of things that are engaged, it is characterized in that,
Above-mentioned stacked a plurality of things that are engaged shake and are engaged by ultrasonic wave by from the outside it being pressurizeed and adding, and are formed with a plurality of impressions that caused by pressurization at above-mentioned stacked a plurality of outer surfaces that are engaged thing;
Among above-mentioned a plurality of impressions, the internal face of the impression of outside portion forms: in the engaging zones of this impression, the inclination of the internal face of the inboard of the rake ratio junction structure of the internal face in the outside of junction structure is mild.
12. a junction structure has stacked a plurality of things that are engaged, it is characterized in that,
Above-mentioned stacked a plurality of things that are engaged shake and are engaged by ultrasonic wave by from the outside it being pressurizeed and adding, and are formed with a plurality of impressions that caused by pressurization at above-mentioned stacked a plurality of outer surfaces that are engaged thing;
In above-mentioned a plurality of impressions, the formation of the impression of outside portion interval is bigger at interval than the formation of the impression of inside portion.
13. according to each described junction structure in the claim 7 to 12, it is characterized in that, above-mentionedly be engaged the electrode plates that thing is the pancake monocell.
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