US3601304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wire bonder
Assignee: WELDMATIC CORP
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Filing: 1968-07-19
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Granted: 1971-08-24
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Expires: 1988-07-19
Abstract
Abstract A wire bonder having a housing, a manipular workpiece-mounting post secured to the housing and a bonding tip reciprocally movable relative to the mounting post. The bonding tip is secured in a holder connected to an ultrasonic transducer and the assembly is in turn operatively engaged with a drive mechanism for reciprocating the bonding tip which includes a first linkage which is secured to a first leaf spring flexibly attached to the housing. Flexibly attached to the first linkage by a second leaf spring is another linkage, one end of which movably engages a planar surface of the housing and another end of which mounts the transducer and tip assembly.
Inventors
- 👤 Momtaz Nosshi Mansour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:22
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/10; B23K20/106; Y; Y10; Y10S; Y10S228/00; Y10S228/904
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
309 words
Ultrasonic welding apparatus comprising: support means including means for mounting a part to be welded; an ultrasonic transducer connected with a bonding tip disposed adjacent the mounting means; drive means for intermittently moving the tip toward and away from the part and for energizing the transducer when the bonding tip contacts the part; an elongated first hinge bar having one end pivotally secured to the transducer and another end movably engaging a planar surface of the support means which is disposed substantially transverse to the direction of motion of the bonding tip; an elongated second hinge bar in operative engagement with the drive means having one end in engagement with the first hinge bar and another end secured to the support means adjacent thE transducer; a first leaf spring having respective ends rigidly secured to the first and the second hinge bars such that a center portion of the spring is disposed midway between the ends of the first hinge bar, the center portion of the spring being free to flex about a first axis; a second leaf spring having respective ends rigidly secured to the support means and the end of the second hinge bar adjacent the support means such that a center portion of the second spring is free to flex about a second axis substantially parallel to the first axis in response to the drive means actuating the second hinge bar, the center portion of the second spring being positioned from the center portion of the first spring a distance equal to a distance between the center portion of the first spring and an end of the first hinge bar; means for biasing the first hinge bar toward the planar surface; and guide means for selectively preventing the transducer from pivoting relative to the first hinge bar when the drive means actuate the second hinge bar.
Claim 2
Dependent Claim
309 words
Ultrasonic welding apparatus comprising: support means including means for mounting a part to be welded; an ultrasonic transducer connected with a bonding tip disposed adjacent the mounting means; drive means for intermittently moving the tip toward and away from the part and for energizing the transducer when the bonding tip contacts the part; an elongated first hinge bar having one end pivotally secured to the transducer and another end movably engaging a planar surface of the support means which is disposed substantially transverse to the direction of motion of the bonding tip; an elongated second hinge bar in operative engagement with the drive means having one end in engagement with the first hinge bar and another end secured to the support means adjacent thE transducer; a first leaf spring having respective ends rigidly secured to the first and the second hinge bars such that a center portion of the spring is disposed midway between the ends of the first hinge bar, the center portion of the spring being free to flex about a first axis; a second leaf spring having respective ends rigidly secured to the support means and the end of the second hinge bar adjacent the support means such that a center portion of the second spring is free to flex about a second axis substantially parallel to the first axis in response to the drive means actuating the second hinge bar, the center portion of the second spring being positioned from the center portion of the first spring a distance equal to a distance between the center portion of the first spring and an end of the first hinge bar; means for biasing the first hinge bar toward the planar surface; and guide means for selectively preventing the transducer from pivoting relative to the first hinge bar when the drive means actuate the second hinge bar.
Claim 3
Dependent Claim
82 words
Apparatus according to claim 1 wherein the guide means include an elongated arm having one end in engagement with the drive means and a third leaf spring having respective ends secured to the opposite end of the arm and to the support means such that a center portion of the third spring is free to flex about an axis and the guide means pivot the transducer relative to the hinge bar in response to actuation of the arm by the drive means.
Claim 4
Dependent Claim
26 words
Apparatus according to claim 2 including adjusting means to alter the position of the bonding tip relative to the mounting means independently of the drive means.
Claim 5
Dependent Claim
34 words
Apparatus according to claim 3 including a holding bar adjacent each respective and end of each leaf spring to substantially rigidly secure each such end to the corresponding hinge bar, arm and support means.
Claim 6
Dependent Claim
22 words
Apparatus according to claim 4 wherein the holding bars are constructed to constrain the springs from flexing more than approximately 25* .
Claim 7
Dependent Claim
19 words
Apparatus according to claim 5 including means for adjusting the force with which the bonding tip contacts the part.
Claim 8
Dependent Claim
27 words
Apparatus according to claim 5 wherein the end of the first hinge bar in engagement with the planar surface includes a roller rotatably secured to said end.
Claim 9
Dependent Claim
29 words
Apparatus according to claim 5 wherein the drive means include a plurality of axially spaced cams engaging the second hinge bar and the elongated arm of the guide means.
Claim 10
Dependent Claim
81 words
Apparatus according to claim 5 wherein the second hinge bar comprises first and second members, the first member being secured to the first and second leaf springs and the second member having one end in engagement with the drive means and another end secured to one end of a fourth leaf spring, the opposite end of which is secured to the support means such that a center portion of the fourth leaf spring is free to flex about the second axis.
Claim 11
Dependent Claim
46 words
Apparatus according to claim 9 wherein the adjusting means include a threaded bar in engagement with the first and second members for adjustably spacing the first from the second member and for transmitting actuation of the second member by the drive means to the first member.
Claim 12
Dependent Claim
30 words
Apparatus according to claim 10 wherein the first, second and fourth springs each include a plurality of springs, each plurality of springs being spaced apart and coplanar with each other.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |