CN104937788A - Ultrasonic bonding device - Google Patents
Ultrasonic bonding device Download PDFInfo
- Publication number
- CN104937788A CN104937788A CN201380068326.1A CN201380068326A CN104937788A CN 104937788 A CN104937788 A CN 104937788A CN 201380068326 A CN201380068326 A CN 201380068326A CN 104937788 A CN104937788 A CN 104937788A
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- CN
- China
- Prior art keywords
- terminal
- heart yearn
- joint portion
- wire joint
- anvil block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/02—Soldered or welded connections
- H01R4/025—Soldered or welded connections with built-in heat generating elements
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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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/10—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
- H01R43/0207—Ultrasonic-, H.F.-, cold- or impact welding
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
- B23K2101/38—Conductors
Abstract
An ultrasonic bonding device comprises: an anvil (10) having a wire bonding section (3) of a terminal (1) placed on the upper surface (11a) thereof, the terminal (1) having a mating terminal connection section (2) at the front and the wire bonding section (3) at the back; an ultrasonic horn (20) arranged above the anvil; and a terminal pressing member (50) for pressing the wire bonding section (3) against the upper surface of the anvil while an ultrasonic vibration is applied. A heater (60) is provided in the terminal pressing member (50).
Description
Technical field
The present invention relates to a kind of ultrasonic bonding equipment, it utilizes ultrasonic bonding by terminal and wire-bonds.
Background technology
Usually, when utilize ultrasonic bonding and make terminal and wire-bonds time, use the ultrasonic bonding equipment of ultrasonic transformer comprising terminal and place anvil block on an upper and relatively arrange above anvil block, and terminal and electric wire are interposed between anvil block and ultrasonic transformer, thus provide ultrasonic vibration to the heart yearn of the electric wire being in sandwiched state.
When making terminal and wire-bonds when utilizing such ultrasonic bonding equipment, as shown in Fig. 9 (a), terminal 301 is placed on the upper surface 311 of anvil block 310.In this case, terminal 301 has the coupling terminal connection part 302 for being connected to coupling terminal usually in front portion, and has the wire joint portion 303 for joining electric wire at its rear portion.Wire joint portion 303 is only had to be placed on the upper surface 311 of anvil block 310.Then, in electric wire W by removing the insulating coating Wb of end and the heart yearn Wa exposed is placed on wire joint portion 303 that anvil block 310 is placed.
Then, as shown in Fig. 9 (b), heart yearn Wa on wire joint portion 303 by pressing surface 321 pressing on the lower surface of ultrasonic transformer 320, and while heart yearn Wa and wire joint portion 303 are interposed between anvil block 310 and ultrasonic transformer 320, provides ultrasonic vibration from ultrasonic transformer 320.By this way, the contact surface of ultrasonic vibration between the unit wires forming heart yearn Wa or between heart yearn Wa and wire joint portion 303 produces frictional heat.Therefore, all unit wires are all finally out of shape due to thermal softening, thus while making heart yearn Wa integration, heart yearn Wa are engaged each other with wire joint portion 303.
Incidentally, if the terminal 301 on ultrasonic bonding period anvil block 310 vibrates into follow heart yearn Wa, then binding energy quantitative change is weak, thus produces the possibility of unsatisfied joint.
As shown in Figure 10, in order to limit this possibility, consider a kind of method, wherein, by using the pressing stage portion 354 of terminal pressing component 350 to press both ends on the Width of the wire joint portion 303 that anvil block 310 is placed against anvil block 310, ultrasonic variable amplitude bar 320 is made to provide ultrasonic vibration to the both ends be under above-mentioned state.In this case, the inwall 356 opposite one another of terminal pressing component 350 is suitable for the effect with limiting wall, which prevent when heart yearn Wa have heart yearn Wa when flat wire joint portion 303 is out of shape give prominence to.
Such as, patent documentation 1 discloses similar example when performing ultrasonic bonding while using this terminal pressing component.
Reference listing
Patent documentation
[patent documentation 1] JP-A-2006-114343
Summary of the invention
Technical problem
Incidentally, study increase utilize ultrasonic bonding and fastening force between the terminal that engages each other and heart yearn time, the difference of the ambient temperature that the present inventor has been found that around junction surface causes the difference of the fastening force between terminal and heart yearn.As an example, fastening force is tested whether having difference when ambient temperature is 10 DEG C and when ambient temperature is 30 DEG C.Under being equal condition by the input energy settings of ultrasonic vibration, 10 samples are contrasted mutually.As a result, as shown in figure 11, the present inventor finds: compare when performing ultrasonic bonding under the ambient temperature of 10 DEG C, when performing ultrasonic bonding under the ambient temperature of 30 DEG C, fastening force increases more.
Such as, this result causes following understanding: if ambient temperature rises to 30 DEG C and makes the temperature of the element of ultrasonic bonding equipment improve, even if then also can obtain favourable record when the temperature conditions in the space of installing ultrasonic bonding equipment is 10 DEG C.But, in order to maintain the temperature of the raising of having installed in the whole space of ultrasonic bonding equipment, then inevitable sizable cost.Therefore, be unpractical.
Therefore, following result when the present inventor has found further further investigation.That is, utilize the frictional heat that the input ultrasonic wave between engaged target parts produces, the ultrasonic bonding engaged target parts that make engage each other.But temperature is in low such stage in the circumferential component relating to joint, under many circumstances, the frictional heat produced by the ultrasonic vibration between engaged target parts is emitted to around.Friction dissipation of heat reduces the possibility that input energy can contribute to engaging.Be appreciated that therefore fastening force reduces.
Incidentally, the ultrasonic bonding equipment of the type is used for producing to the ultrasonic bonding process engaged with each terminal making mutual chain connect of heart yearn execution the electric wire being incorporated with terminal by a series of.Now, from first product be incorporated with after the production of the electric wire of terminal start until complete the process period of the tenth or more product, the anvil block that terminal is placed thereon and cooling for the terminal pressing component against anvil block press terminal, thus cause heat to be emitted to these parts.Then, when process the tenth product or more product, the parts of cooling warm up till now gradually.Therefore, think that fastening force increases.
But, element temperature by this way and incrementally simultaneously, when by using terminal pressing component against anvil block press terminal, if observe the temperature change of anvil block and terminal pressing component, be then interpreted as that more heat is emitted to terminal pressing component.Figure 12 shows the observed result how changed temperature in the anvil block in stage after from and then producing and terminal pressing component.
From this result be appreciated that the temperature of anvil block at short notice (from be incorporated with the electric wire of terminal the lower frequency that starts of production) improve.By contrast, the raising of the temperature of terminal pressing component is delayed.Therefore, observe the frictional heat contributing to engaging and be emitted to the terminal pressing component with low temperature.Temperature change between anvil block and terminal pressing component by this way and reason different from each other is that temperature change depends primarily on the difference of their volume.As mentioned above, the frictional heat contributing to engaging is emitted to terminal pressing component more.Be appreciated that above-mentioned reason causes the phenomenon that dies down of fastening force between the starting stage terminal produced and heart yearn.
The present invention makes in view of the foregoing, and the object of this invention is to provide a kind of ultrasonic bonding equipment, it can prevent by improving the temperature of terminal pressing component the frictional heat dissipation that contributes to engaging effectively, and this ultrasonic bonding equipment can therefore improve from fastening force between the terminal of starting stage produced and heart yearn.
The scheme of dealing with problems
To achieve these goals, ultrasonic bonding equipment according to the present invention has following structure (1) and (2).
(1) ultrasonic bonding equipment, comprising:
Anvil block, comprise the upper surface of the wire joint portion for accommodating terminal, this terminal comprises the coupling terminal connection part for being connected to coupling terminal in front portion, and has the wire joint portion of the heart yearn of the end for joining electric wire at its rear portion, this wire joint portion;
Ultrasonic variable amplitude bar, be placed in above described anvil block, and be configured to: while be placed on the described heart yearn on the described wire joint portion that the described upper surface of described anvil block is placed from top pressing, by providing ultrasonic vibration to described heart yearn and the connecting portion between described heart yearn and described wire joint portion, and described wire joint portion is engaged each other with described heart yearn;
Terminal pressing component, is configured to: when utilizing described ultrasonic variable amplitude bar to provide described ultrasonic vibration, and the described upper surface against described anvil block presses described wire joint portion; And
Heater, it heats described terminal pressing component.
(2) in the ultrasonic bonding equipment with above-mentioned structure (1), described heater is placed in described terminal pressing component.
According to the ultrasonic bonding equipment with above-mentioned structure (1) and (2), can by heating terminal pressing component when producing in starting stage when being incorporated with the electric wire of terminal, and frictional heat be effectively prevented to be emitted to terminal pressing component.As a result, the fastening force between terminal and heart yearn can be improved, and the productive rate of the electric wire being incorporated with terminal can be improved.
The beneficial effect of the invention
According to the present invention, the frictional heat dissipation contributing to engaging effectively can be prevented by the temperature of raising terminal pressing component.As a result, can from starting stage of producing increase fastening force between terminal and heart yearn.
So far, the present invention is schematically illustrated.In addition, if read over following for embodying embodiments of the present invention (hereinafter, referred to " embodiment ") with reference to accompanying drawing, then details of the present invention will be more clear.
Accompanying drawing explanation
Fig. 1 is the perspective view of the schematic configuration of the major part of the ultrasonic bonding equipment illustrated according to aspects of the present invention.
Fig. 2 is the perspective view of the structure of the terminal pressing component illustrated as the component parts in ultrasonic bonding equipment according to an embodiment of the invention.
Fig. 3 (a) is the view of the structure of the terminal pressing component illustrated as the component parts in ultrasonic bonding equipment according to an embodiment of the invention to 3 (c).Fig. 3 (a) is front view, and Fig. 3 (b) is the end view by the part shown in cross section, and Fig. 3 (c) is the zoomed-in view intercepted along the arrow in Fig. 3 (a).
Fig. 4 (a) is the view for illustrating the process when utilizing ultrasonic bonding equipment according to an embodiment of the invention to make terminal engage each other with electric wire to 4 (d).Fig. 4 (a) illustrates that the wire joint portion of terminal is placed on the view of the state on anvil block, Fig. 4 (b) illustrates the view of terminal pressing component against the state of the wire joint portion of anvil block press terminal, Fig. 4 (c) is the view that the heart yearn of the end that electric wire is shown is placed on the state on wire joint portion, and Fig. 4 (d) shows ultrasonic amplitude transformer against the view providing the state of vibration of ultrasonic wave while wired portion pressing heart yearn by making ultrasonic amplitude transformer decline.
Fig. 5 (a) and Fig. 5 (b) is the view of the state illustrated during the process shown in Fig. 4 (b).Fig. 5 (a) is the plane graph of the part pressed by terminal pressing component for recognition terminal, and Fig. 5 (b) is the front view of the state that terminal pressing component press terminal is shown.
Fig. 6 (a) and 6 (b) illustrate to utilize ultrasonic bonding equipment according to an embodiment of the invention and the view of product (connected structure) that terminal is engaged each other with electric wire.Fig. 6 (a) is perspective view, and Fig. 6 (b) is plane graph when viewed from above.
Fig. 7 is the chart of the beneficial effect for illustrating ultrasonic bonding equipment according to an embodiment of the invention.This table show when terminal being engaged each other heat terminal holding member in the environment of 10 DEG C while with heart yearn, fastening force when fastening force engages each other with heart yearn with terminal in the environment of 40 DEG C increases identically.
Fig. 8 (a) is the view for illustrating an alternative embodiment of the invention to 8 (c).Fig. 8 (a) is the perspective view illustrated by using the product (connected structure) making terminal engage each other with electric wire according to device of the present invention.Fig. 8 (b) and 8 (c) are for illustrating at the view producing the process in product process.Fig. 8 (b) is the anterior elevational view illustrated to press the terminal be placed on anvil block and the state that terminal pressing component will be made to decline against anvil block, and Fig. 8 (c) is the front view of the state that terminal pressing component press terminal is shown.
Fig. 9 (a) and 9 (b) are the views for illustrating the example in correlation technique.Fig. 9 (a) illustrates that terminal and heart yearn are interposed in the perspective view of the state between anvil block and ultrasonic variable amplitude bar, and Fig. 9 (b) illustrates the perspective view performing the state of ultrasonic joint under sandwiched state.
Figure 10 is when from the sectional view illustrated when the front viewing of terminal pressing component against the state of the wire joint portion of anvil block press terminal of ultrasonic bonding period.
Figure 11 illustrates fastening force between terminal and heart yearn environmentally temperature and the chart changed.
Figure 12 be illustrate when utilize ultrasonic bonding and terminal is engaged each other with heart yearn time, the temperature of anvil block and terminal pressing component is according to the chart processing the quantity processed and the difference changed.
List of reference signs
1 terminal
2 coupling terminal connection parts
3 wire joint portions
10 anvil blocks
11 upper surfaces
20 ultrasonic variable amplitude bars
21 pressing surfaces
50 terminal pressing components
60 heaters
101 terminals
102 coupling terminal connection parts
103 wire joint portions
W electric wire
Wa heart yearn
Embodiment
Hereinafter, embodiments of the invention will be described with reference to the drawings.
Fig. 1 is the perspective view of the schematic configuration of the major part that ultrasonic bonding equipment is according to an embodiment of the invention shown.Fig. 2 is the perspective view of the structure of the terminal pressing component illustrated as the component parts in ultrasonic bonding equipment, and Fig. 3 is the view of the structure that terminal pressing component is shown.Fig. 3 (a) is front view, and Fig. 3 (b) is the end view using the part shown in cross section, and Fig. 3 (c) is the enlarged drawing intercepted along the arrow IIIc in Fig. 3 (a).Fig. 4 (a) is the view for illustrating the process making terminal engage each other with electric wire when utilizing ultrasonic bonding equipment to 4 (d).Fig. 5 (a) is the plane graph of the part pressed by terminal pressing component for recognition terminal, and Fig. 5 (b) is the front view of the state that terminal pressing component press terminal is shown.
As shown in Figure 1, the ultrasonic bonding equipment according to the present embodiment has: anvil block 10, and it is fixed on pre-position; Ultrasonic variable amplitude bar 20, it is arranged on above anvil block 10, with can vertical motion; And terminal pressing component 50, it has and makes to avoid interfering such shape with ultrasonic variable amplitude bar 20, and separates with ultrasonic variable amplitude bar 20 and to install independently thus can vertical motion.Anvil block 10, ultrasonic variable amplitude bar 20 are all the parts be made of metal with terminal pressing component 50.
In addition, although do not illustrate, ultrasonic bonding equipment also has: the vertical motion mechanism of ultrasonic variable amplitude bar 20; Vibrating mechanism, for providing ultrasonic vibration for ultrasonic variable amplitude bar 20; The vertical motion mechanism of terminal pressing component 50; The transport sector of terminal 1; And the transport sector of electric wire W.In addition, the manufacturing installation being incorporated with the electric wire of terminal comprising ultrasonic bonding equipment has the mechanism of exposing heart yearn Wa for the insulating coating Wb of the end by peeling off electric wire W.
Herein, as as described in Fig. 4 (a), terminal 1 has the coupling terminal connection part 2 (also referred to as " case portion " at general female end) of the corner post shape for being connected to coupling terminal in front portion, and has at rear portion and mate terminal connection part continuous print for joining the heart yearn Wa electric wire joint portion of the end of electric wire W to.
In this case, wire joint portion 3 is configured to have single flat board, and is not equal to the base plate had in the cartridge type wire joint portion in U-shaped cross section hereinafter will described.Horn shape tubular is molded as by engaging or weld the junction surface of bent plate by mating terminal connection part (case portion) 2.Coupling terminal connection part 2 is constructed such that mating end is interposed in elastic contact chip with between the periphery wall inner surface mating terminal connection part 2 elasticly.By this way, mate terminal connection part 2 and can carry out electrical contact with mating terminal.
In addition, obtain electric wire W by this way: the heart yearn Wa outside formed by many unit wires are twisted into circular cross-section is coated with the insulating coating Wb be made up of synthetic resin, and heart yearn Wa is by peeling off the insulating coating Wb of terminal with the predetermined length joined to required for terminal 1 and exposing.
As shown in Figure 1, anvil block 10 is block parts, and wherein, the flat upper surfaces 11a with the protuberance 11 of the width corresponding with the transverse width dimension of the wire joint portion 3 of terminal 1 serves as the placement surface of the wire joint portion 3 for terminal 1.
Ultrasonic variable amplitude bar 20 is placed in above anvil block 10, thus can vertical motion.While the heart yearn Wa being placed on the electric wire W that the wire joint portion 3 on the upper surface 11a of anvil block 10 is placed from top pressing, ultrasonic variable amplitude bar 20 by providing ultrasonic vibration to heart yearn Wa and the contact site between heart yearn Wa and wire joint portion 3, and makes wire joint portion 3 engage each other with heart yearn Wa.
When ultrasonic variable amplitude bar 20 couples of heart yearn Wa provide ultrasonic vibration, terminal pressing component 50 is against the wire joint portion 3 of the upper surface 11a press terminal 1 of anvil block 10.As shown in Fig. 1 to 3 (c), terminal pressing component 50 is configured to serve as the thick plate-like member with upright posture.Terminal pressing component 50 is arranged on wherein, thus has the attitude that the longitudinal direction of terminal 1 is pointed in thickness of slab direction.When the lateral symmetry shape that the shape of the Lower Half of watching on thickness of slab direction is along with shape narrows towards lower end.
From than upper end more slightly under position and the wide slot portion 52 extending to lower end is placed in the centre on the transverse width direction of terminal pressing component 50.The latter half of terminal pressing component 50 is slit into the leg 51 laterally settled by this finedraw portion 52 vertically extended.In addition, as shown in Figure 1, ultrasonic variable amplitude bar 20 is suitable for can vertical motion, thus in slit portion 52, does not touch terminal pressing component 50.
Guiding wall 53 along the protuberance 11 of anvil block 10 lateral side surfaces vertical motion and abreast opposite one another, this guiding wall 53 is placed in the lower end of the leg 51 laterally settled, and is placed in the upside of guiding wall 53 respectively in the pressing stage portion 54 of inwardly giving prominence to shape.
The pressing stage portion 54 be placed in the leg 51 laterally settled is parts corresponding with the first press section, when making terminal pressing component 50 decline, this first press section is against upper pressing two end 3a (with reference to figure 4 (a) to 5 (b)) of Width (the transverse width direction orthogonal with the longitudinal direction of terminal 1) of the wire joint portion 3 of the terminal 1 of anvil block 10 on the upper surface 11a of protuberance 11 being placed on anvil block 10.These pressing stage portion 54 comprise the surperficial 54a of pressing, and this pressing surface 54a is suspended on the upper surface of two lateral ends of wire joint portion 3 a little.
Limiting wall 56 is placed on the upside of pressing step wall portion 54 respectively.The width of wire joint portion 3 on the transverse width direction in space, upside is restricted to narrower than the transverse width dimension of wire joint portion 3 by limiting wall 56, thus restriction heart yearn Wa, make when heart yearn Wa due to ultrasonic vibration thermal softening and be out of shape time, heart yearn Wa does not cross the width of wire joint portion 3 and gives prominence to.Limiting wall 56 upwards extends vertically from the inner of the pressing surface 54a of pressing stage portion 54 respectively.
In addition, these limiting walls 56 have such wall surface obtaining possibility: while pressing wall surface when heart yearn Wa is out of shape, heart yearn Wa is closely attached to limiting wall 56.Therefore, the wall surface of limiting wall 56 has irregular portion 56a, even if when heart yearn Wa is attached on it.Irregular portion 56a extends in the vertical direction and has constant cross section, and is adapted so that heart yearn Wa is not blocked by this irregular portion 56a when terminal pressing component 50 moves upward.
In addition, the intercell connector 55 that the leg 51 laterally settled is connected to each other, is placed in the lower end of the leg 51 laterally settled.Intercell connector 55 is parts corresponding with the second press section, its against anvil block 10 by the part being pressed in that side more forward than the part for heart yearn Wa being joined to electric wire joint portion 3 and being connected to a terminal connection part 2.The rear surface 55a of the intercell connector 55 pressed against the upper surface of wire joint portion 3 is formed as plane, and this plane is identical with the plane of the pressing surface 54a of pressing stage portion 54.
Therefore, as shown in Fig. 5 (a) He 5 (b), when terminal pressing component 50 moves downward, upper surface for wire joint portion 3 presses three positions corresponding with each U-shaped side on the pressing surface 54a of the pressing stage portion 54 of laterally settling and the rear surface 55a of intercell connector 55, thus against anvil block pressing wire joint portion 3.
In addition, the heater 60 for heating terminal pressing component 50 is incorporated in terminal pressing component 50.In this case, adding it 60 is shaft-like drums, and is inserted in the hole 61 of holing on the surface at the two ends on the transverse width direction of terminal pressing component 50.At random can select the position for settling heater 60.Heater 60 can be placed in the position of any desired of terminal pressing component 50, but, preferably heater 60 is placed in the position had for installing space.At random can select the type of heater 60.But, preferably adopt and there is the type that can improve the performance of the temperature of terminal pressing component 50 rapidly.
Except adding it except 60, also having the such temperature sensor of such as thermocouple can be incorporated in terminal pressing component 50, making the measured value based on temperature sensor perform temperature to heater 60 and controlling.In addition, when multiple terminal 1 and electric wire E engage each other, heater 60 can be set to and only run with the starting stage.
Then, will the ultrasonic bonding equipment using and there is above-mentioned structure be described through and make the process that terminal 1 engages each other with electric wire W, and the connected structure between the terminal 1 obtained by this process and electric wire W.
When joining the heart yearn Wa of the end of electric wire W the wire joint portion 3 of terminal 1 to by using ultrasonic bonding equipment, as shown in Fig. 4 (a), first the wire joint portion 3 of terminal 1 is placed on the upper surface 11a of the protuberance 11 of anvil block 10.
Thereafter, as shown in Fig. 4 (b), terminal pressing component 50 moves downward.Then, as shown by arrow A, the pressing surface 54a of pressing stage portion (the first press section) 54 presses wire joint portion 3 both ends 3a in the direction of the width downwards, thus presses wire joint portion 3 against anvil block 10.Meanwhile, intercell connector (the second press section) 55 presses down on the part that side more forward than the part for heart yearn Wa being joined to electric wire joint portion 3 is connected to a terminal connection part 2, thus presses wire joint portion 3 against anvil block 10.In this condition, terminal 1 departs from from the carrier 9 (with reference to figure 1) be connected to each other with the shape of link by terminal 1.
Now, as shown in Fig. 5 (a), three positions S1, S2 and S3 that terminal pressing component 50 presses on the upper surface of wire joint portion 3 pressed through use two step press sections 54 and an intercell connector 55.
Thereafter, as shown in Fig. 4 (c), the heart yearn Wa of the end of electric wire W is placed on wire joint portion 3.Then, in this condition, as shown in Fig. 4 (d), as shown by arrow B, ultrasonic variable amplitude bar 20 moves downward and is positioned at the top of wire joint portion 3.The heart yearn Wa that the wire joint portion 3 upper surface of anvil block 10 is placed is placed on from top pressing.While applying pressing force, ultrasonic variable amplitude bar 20 couples of heart yearn Wa apply ultrasonic vibration, and provide ultrasonic vibration to heart yearn Wa and the contact site between heart yearn Wa and wire joint portion 3.By this way, wire joint portion 3 engages each other with heart yearn Wa.
After joint, first ultrasonic variable amplitude bar 20 moves upward, and rear terminal pressing component 50 moves upward.Lift the electric wire W joining terminal 1 to from anvil block 10, and be transferred to discharge cell.Above-mentioned process makes the joining process between terminal and electric wire once to complete.This joining process is in turn and automatically to often organizing terminal 1 and electric wire W performs.
When performing above-mentioned process, in the ultrasonic bonding stage, terminal pressing component 50 is against the part being connected to coupling terminal connection part 2 in the both ends on the Width of the wire joint portion 3 of anvil block 10 press terminal 1 and wire joint portion 3.Therefore, it is possible to make the minimum vibration of following wire joint portion 3 as much as possible.Especially, the intercell connector (the second press section) 55 of terminal pressing component 50 presses in wire joint portion 3 part being connected to coupling terminal connection part 2 against anvil block 10.Therefore, it is possible to suppress the vibration being diffused into coupling terminal connection part 2 side as much as possible.Therefore, it is possible to eliminate the adverse effect caused by the resonance of coupling terminal connection part 2, and thus, the ultrasonic bonding productive rate of lifting and the quality of improvement that obtain the product engaged can be utilized.
In addition, intercell connector 55 is arranged on the front side of heart yearn Wa of the end of electric wire W.Therefore, it is possible to perform location to the front end of heart yearn Wa, and thus, the quality that the product that engaged is stable can be obtained.In addition, the limiting wall 56 of terminal pressing component 50 limits heart yearn Wa, thus heart yearn Wa does not give prominence to when heart yearn Wa is out of shape.Therefore, it is possible to realize the increased quality having engaged product.Especially, irregular portion 56a is placed on the wall surface of limiting wall 56.Therefore, though when heart yearn Wa softening and after distortion heart yearn Wa be closely attached to limiting wall 56, also can prevent limiting wall 56 and heart yearn Wa from adhering to mutually.Therefore, it is possible to steadily and little by little executable operations.
In addition, cooling when terminal pressing component 50 and especially starting in the starting stage of producing, terminal pressing component 50 is heated by heater 60.By this way, can effectively prevent frictional heat from escaping into terminal pressing component 50 from engaged target portion.As a result, the fastening force between terminal 1 and heart yearn Wa can be increased, and the productive rate of the electric wire being incorporated to terminal can be improved.
Fig. 7 illustrates that 10 manufactured by starting to produce with following state respectively when being incorporated with the electric wire of terminal, the experimental result of the difference of the fastening force between terminal 1 and heart yearn Wa: ambient temperature is 10 DEG C, ambient temperature for 40 DEG C and ambient temperature by 10 DEG C and terminal pressing component 50 heated by heater 60.Can think: the state compared to ambient temperature being 10 DEG C, when production under the state being 40 DEG C in ambient temperature is incorporated with the electric wire of terminal, fastening force is more stable.Therefore, compared to when in ambient temperature be produce under the state that heated by heater 60 of 10 DEG C and terminal pressing component 50 be incorporated with the electric wire of terminal time, can think when produce under the state of ambient temperature for 40 DEG C be incorporated with the electric wire of terminal time can obtain roughly the same result.As mentioned above, the temperature improving terminal pressing component 50 can contribute to the fastening force increased between terminal 1 and heart yearn Wa.
In addition, as shown in Fig. 6 (a) He 6 (b), this joint can obtain the connected structure between terminal and electric wire.This connected structure makes the both ends on the Width that the longitudinal direction of the wire joint portion 3 with terminal is orthogonal and is connected to the part of a terminal connection part 2 in that side more forward than the part Wx for heart yearn Wa being joined to electric wire joint portion 3, can guarantee when ultrasonic variable amplitude bar and anvil block are for time ultrasonic bonding, for pressing pressing space S 11, S12 and S13 of the pressing component of wire joint portion 3 against anvil block.Therefore, owing to ensure that these space S 11 to S13, so when ultrasonic variable amplitude bar and anvil block are used for ultrasonic bonding, can reliably against anvil block pressing wire joint portion 3.Therefore, it is possible to prevent vibration to be diffused into coupling terminal connection part 2.As a result, the adverse effect caused by the resonance of coupling terminal connection part 2 can be improved.
The invention is not restricted to above-described embodiment, and can suitably revise and improve.In addition, as long as can the present invention be realized, be then not limited to above-described embodiment and can adopt arbitrarily the material of each composed component in above-described embodiment, shape, size, quantity and position.
Such as, in the above-described embodiments, the wire joint portion 3 having described terminal 1 is configured with the situation of single plane.But as shown in Fig. 8 (a), the present invention can also be applied to following situation: be arranged on the tubular that the wire joint portion 103 at terminal 101 rear portion that front portion has a coupling terminal connection part 102 is configured to have U-shaped cross section.To 8 (c), an alternative embodiment of the invention will be described by reference to Fig. 8 (a).Give the composed component identical with the composed component of previous embodiment by identical reference number, and the description thereof will be omitted.Hereinafter, only the point different from the embodiment described before will be described.
As shown in Fig. 8 (a), in this case, the wire joint portion 103 of terminal 101 has heart yearn junction surface 104 and coating pressure contact portion 105.Heart yearn junction surface 104 and coating pressure contact portion 105 are configured to respectively to be had: the common base plate 106 extended continuously from coupling terminal connection part 102; And upright side plate 107 and 108 on the both sides being formed as on the Width of base plate 106.
Ultrasonic bonding equipment electric wire W being joined to the terminal 101 comprising the electric wire joint portion 103 with above-mentioned shape according to the present embodiment is configured to: ultrasonic bonding by using, and the heart yearn Wa of electric wire W is joined to the base plate 106 at heart yearn junction surface 104.
Namely, as shown in Fig. 8 (b), terminal pressing component 150 has guiding wall 153, when terminal pressing component 150 moves downward, this guiding wall 153 moves along the lateral side surfaces of the protuberance 11 of anvil block 10, and this guiding wall 153 is at the lower end of the leg 151 laterally settled, abreast opposite one another.Terminal pressing component 150 has: pressing stage portion (the first press section) 154, and the upper end (corresponding to the both ends on the Width orthogonal with the longitudinal direction of wire joint portion 103) of the side plate 107 that the transverse direction against heart yearn junction surface 104 is settled presses this step press section 154; And intercell connector (the second press section) 155, this intercell connector 155 makes the leg 151 laterally settled be connected to each other, and against anvil block 10 by press 106, in the part of that the side matching connection terminal connection part 102 more forward than the part for heart yearn Wa being joined to wire joint portion 3.
Pressing stage portion 154 is inwardly given prominence to from guiding wall 153 by the size quantity be suspended on the upper end of the side plate 107 at heart yearn junction surface 104, and the surperficial 154a of pressing downwards can be made to press the upper end of side plate 107.In addition, the lower surface 155a of intercell connector 155 is positioned to against the upper surface of base plate 106 and presses this lower surface 155a, and this base plate 106 is positioned at the middle position cutting off the side plate 107 of heart yearn connecting portion 104.
By be described through use by this way and form ultrasonic bonding equipment and make the situation that terminal 101 engages each other with electric wire W.As shown in Fig. 8 (b), first the heart yearn junction surface 104 of terminal 101 is placed on the upper surface 11a of the protuberance 11 of anvil block 10.
Thereafter, as shown in Fig. 8 (c), terminal pressing component 150 moves downward.Then, the pressing surface 154a of pressing stage portion (the first press section) 154 depresses the upper end of the side plate 107 at the both ends on the Width at heart yearn junction surface 104, thus presses heart yearn junction surface 104 against anvil block 10.Simultaneously, intercell connector (the second press section) 155 against anvil block 10 depress on base plate 106, at that side matching connection terminal connection part 102 more forward than the part for heart yearn Wa being joined to wire joint portion 3, thus press heart yearn junction surface 103 against anvil block 10.
Thereafter, the heart yearn Wa of the end of electric wire W is placed on the base plate 106 at heart yearn junction surface 104.Then, in this condition, ultrasonic variable amplitude bar 20 moves downward and above base plate 106, thus from top by the heart yearn Wa be placed on the base plate 106 at the heart yearn junction surface 104 that the upper surface of pressure anvil block 10 is placed.In addition, while applying pressing force, ultrasonic variable amplitude bar 20 couples of heart yearn Wa apply ultrasonic vibration, and provide ultrasonic vibration to heart yearn Wa and the contact site between heart yearn Wa and heart yearn junction surface 104.By this way, heart yearn junction surface 104 is made to engage each other with heart yearn Wa.
During above-mentioned process, terminal pressing component 150 against the both ends on the Width of the wire joint portion 103 of anvil block 10 press terminal 101, and is positioned at part base plate 106 being connected to coupling terminal connection part 102 in wire joint portion 103.Therefore, it is possible to make the minimum vibration of following wire joint portion 103 as much as possible.Especially, the intercell connector (the second press section) 155 of terminal pressing component 150 presses in wire joint portion 103 part being connected to coupling terminal connection part 102 against anvil block 10.Therefore, it is possible to prevent vibration to be diffused into coupling terminal connection part 102 as much as possible.Therefore, it is possible to eliminate the adverse effect caused by the resonance of coupling terminal connection part 102, and thus, the quality that the ultrasonic bonding productive rate obtaining the lifting of the product engaged promotes and improves can be utilized.
In addition, intercell connector 55 is arranged on the front side of heart yearn Wa of the end of electric wire W.Therefore, it is possible to perform the location to the front end of heart yearn Wa, and thus, the stable quality of the product engaged can be realized.In addition, in this case, the heart yearn junction surface 104 of terminal 101 has side plate 107, and this side plate 107 limits heart yearn Wa in advance, thus does not give prominence to when heart yearn Wa is out of shape.Therefore, it is possible to obtain the quality of the improvement of the product engaged.
In addition, when terminal pressing component 150 cool and particularly start produce starting stage, terminal pressing component 150 is heated by heater 60.By this way, frictional heat can be effectively prevented to be emitted to terminal pressing component 150 from engaged target portion.As a result, the fastening force between terminal 101 and heart yearn Wa can be increased, and the productive rate of the electric wire being incorporated with terminal can be improved.
Heater can be incorporated in anvil block 10 in advance, thus heating anvil block 10.
Herein, will in following [1] and [2] short summary and the above-described embodiment listed respectively according to ultrasonic bonding equipment of the present invention.
[1] ultrasonic bonding equipment, comprising:
Anvil block (10), (10) upper surface of the wire joint portion (3) for accommodating terminal (1) is comprised, this terminal (1) comprises the coupling terminal connection part (2) for being connected to coupling terminal in front portion, and there is the wire joint portion of the heart yearn (Wa) of the end for joining electric wire (W) to, this wire joint portion at its rear portion;
Ultrasonic variable amplitude bar (20), be placed in above anvil block, and be configured to: while be placed on the heart yearn on the wire joint portion that the upper surface of anvil block is placed from top pressing, by providing ultrasonic vibration to heart yearn and the connecting portion between heart yearn and wire joint portion, and wire joint portion is engaged each other with heart yearn;
Terminal pressing component (150), is configured to: when utilizing ultrasonic variable amplitude bar to provide ultrasonic vibration against the upper surface pressing wire joint portion of anvil block; And
Heater (60), heating terminal pressing component.
[2] according in the ultrasonic bonding equipment of above-mentioned [1], heater is placed in terminal pressing component.
Describe the present invention in detail with reference to specific embodiment.But, those skilled in the art is apparent that and when not deviating from the spirit and scope of the present invention, can be changed or amendment the present invention.
The Japanese patent application No.2012-283568 that the application submitted to based on December 26th, 2012, and require its priority, this application full content is incorporated to herein by reference.
Industrial applicibility
According to the present invention, the frictional heat loss contributing to engaging effectively can be prevented by the temperature of raising terminal pressing component.As a result, can increase from the fastening force between the terminal and heart yearn of starting stage when starting production.The invention provides these beneficial effects, utilizing ultrasonic bonding and to make in the ultrasonic bonding field of terminal and wire-bonds be useful.
Claims (2)
1. a ultrasonic bonding equipment, comprising:
Anvil block, comprises the upper surface of the wire joint portion for accommodating terminal, and this terminal comprises the coupling terminal connection part for being connected to coupling terminal in front portion, and has the wire joint portion of the heart yearn of the end for joining electric wire at its rear portion;
Ultrasonic variable amplitude bar, be placed in above described anvil block, and be configured to: while be placed on the described heart yearn on the described wire joint portion that the described upper surface of described anvil block is placed from top pressing, by providing ultrasonic vibration to described heart yearn and the connecting portion between described heart yearn and described wire joint portion, and described wire joint portion is engaged each other with described heart yearn;
Terminal pressing component, is configured to: when utilizing described ultrasonic variable amplitude bar to provide described ultrasonic vibration, and the described upper surface against described anvil block presses described wire joint portion; And
Heater, heats described terminal pressing component.
2. ultrasonic bonding equipment according to claim 1,
Wherein, described heater is placed in described terminal pressing component.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012283568A JP2014127365A (en) | 2012-12-26 | 2012-12-26 | Ultrasonic bonding device |
| JP2012-283568 | 2012-12-26 | ||
| PCT/JP2013/083792 WO2014103807A1 (en) | 2012-12-26 | 2013-12-17 | Ultrasonic bonding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104937788A true CN104937788A (en) | 2015-09-23 |
Family
ID=51020894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380068326.1A Pending CN104937788A (en) | 2012-12-26 | 2013-12-17 | Ultrasonic bonding device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2014127365A (en) |
| CN (1) | CN104937788A (en) |
| WO (1) | WO2014103807A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10940645B2 (en) | 2019-06-05 | 2021-03-09 | Triple Win Technology(Shenzhen) Co. Ltd. | Vibration heat-pressing device |
| CN114599471A (en) * | 2019-11-05 | 2022-06-07 | 崇德超声波有限公司 | Ultrasonic welding device with displaceable stop element |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019083155A (en) * | 2017-10-31 | 2019-05-30 | 矢崎総業株式会社 | Terminal-equipped electric wire manufacturing method and manufacturing system |
| JP2019121467A (en) * | 2017-12-28 | 2019-07-22 | 株式会社オートネットワーク技術研究所 | Terminal-equipped wire and manufacturing method of terminal-equipped wire |
| EP3572177B1 (en) * | 2018-05-22 | 2021-04-21 | Aptiv Technologies Limited | Method of bonding cables and welding machine |
| CN112186453B (en) * | 2019-07-04 | 2023-06-13 | 矢崎（中国）投资有限公司 | Terminal welding equipment |
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| JP2005199327A (en) * | 2004-01-16 | 2005-07-28 | Kobe Steel Ltd | Ultrasonic joining method of aluminum-based metal and steel |
| JP2006114343A (en) * | 2004-10-14 | 2006-04-27 | Auto Network Gijutsu Kenkyusho:Kk | Method for manufacturing electric cable with terminal |
| JP2009028729A (en) * | 2007-07-24 | 2009-02-12 | Bondtech Inc | Ultrasonic vibration bonding method, device formed by the same, and ultrasonic vibration bonding apparatus |
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| JPH09168876A (en) * | 1995-10-20 | 1997-06-30 | Harness Sogo Gijutsu Kenkyusho:Kk | Supersonic wave welding equipment |
| JP4056276B2 (en) * | 2002-03-27 | 2008-03-05 | 松下電器産業株式会社 | Component mounting method and apparatus |
| JP4431020B2 (en) * | 2003-10-14 | 2010-03-10 | ボンドテック株式会社 | Ultrasonic vibration bonding method and apparatus |
| JP4315284B2 (en) * | 2004-01-23 | 2009-08-19 | パナソニック株式会社 | Ultrasonic bonding head and ultrasonic bonding method |
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2012
- 2012-12-26 JP JP2012283568A patent/JP2014127365A/en not_active Abandoned
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2013
- 2013-12-17 CN CN201380068326.1A patent/CN104937788A/en active Pending
- 2013-12-17 WO PCT/JP2013/083792 patent/WO2014103807A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005199327A (en) * | 2004-01-16 | 2005-07-28 | Kobe Steel Ltd | Ultrasonic joining method of aluminum-based metal and steel |
| JP2006114343A (en) * | 2004-10-14 | 2006-04-27 | Auto Network Gijutsu Kenkyusho:Kk | Method for manufacturing electric cable with terminal |
| JP2009028729A (en) * | 2007-07-24 | 2009-02-12 | Bondtech Inc | Ultrasonic vibration bonding method, device formed by the same, and ultrasonic vibration bonding apparatus |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10940645B2 (en) | 2019-06-05 | 2021-03-09 | Triple Win Technology(Shenzhen) Co. Ltd. | Vibration heat-pressing device |
| TWI735011B (en) * | 2019-06-05 | 2021-08-01 | 新煒科技有限公司 | Vibration hot pressing device |
| CN114599471A (en) * | 2019-11-05 | 2022-06-07 | 崇德超声波有限公司 | Ultrasonic welding device with displaceable stop element |
| US11872648B2 (en) | 2019-11-05 | 2024-01-16 | Schunk Sonosystems Gmbh | Ultrasonic welding device with displaceable stop element |
| CN114599471B (en) * | 2019-11-05 | 2024-03-29 | 崇德超声波有限公司 | Ultrasonic welding device with displaceable stop element |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014103807A1 (en) | 2014-07-03 |
| JP2014127365A (en) | 2014-07-07 |
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Application publication date: 20150923 |