EP0203597A2
Expired / Lapsed
EP
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Bonding head
Assignee: F&K Delvotec Bondtechnik GmbH
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Filing: 1986-05-28
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Granted: —
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Expires: 2006-05-28
Abstract
Abstract A bonding head (10) of a wire bonding machine for bonding wire to electronic or electronical components comprises a bonding tool (18) connected to an ultrasonic transducer (16), a wire spool (22) mounted at the opposite side of the head to the transducer (16), and (optionally) a guide (60) including a tabular member (62) adjustably mounted on the head (10) having an inlet end through which wire (20) from the spool (22) passes and an outlet end (64) adjacent the bonding tip (19), the guide (60) being mounted for angular movement on an arm (70) itself pivotally mounted whereby the angle of the guide (60) can be adjusted while maintaining the outlet end (64) in position adjacent the bonding tip (19). Thus the wire (20) can be supplied to the tool (18) at a variety of different angles according to the component to which the wire is to be bonded.
Inventors
- 👤 Werner Deubzer
- 👤 Farhad Farassat
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 09:28
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/002; B23K20/004; B23K20/005; B23K20/10; B23K20/106; H; H10; H10W; H10W72/00; H10W72/071; H10W72/0711; H10W72/07141; H10W72/075; H10W72/07531; H10W72/07532; H10W72/07533
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
119 words
A bonding head, especially for ultrasonic bonding a wire (20) to a contact surface of an electronic or electrical component comprising a bonding tool (18) connected to an ultrasonic transducer (16), and comprising a wire supply (22) from which said wire (20) is unwound, and optionally comprising wire clamping means (24) for locating the wire tail in the proper position after completion of a bonding operation, said clamping means being operative between the wire supply (22) and bonding tool (18) and being reciprocatingly movable in wire feeding direction (Z), characterized in that relative to the bonding tool (18) said wire supply (22) is adapted to be mounted on the side of the bonding head (10) opposite the transducer (16).
Claim 2
Dependent Claim
119 words
A bonding head, especially for ultrasonic bonding a wire (20) to a contact surface of an electronic or electrical component comprising a bonding tool (18) connected to an ultrasonic transducer (16), and comprising a wire supply (22) from which said wire (20) is unwound, and optionally comprising wire clamping means (24) for locating the wire tail in the proper position after completion of a bonding operation, said clamping means being operative between the wire supply (22) and bonding tool (18) and being reciprocatingly movable in wire feeding direction (Z), characterized in that relative to the bonding tool (18) said wire supply (22) is adapted to be mounted on the side of the bonding head (10) opposite the transducer (16).
Claim 3
Dependent Claim
42 words
A bonding head as claimed in claim 1, characterized in that the basic setting of the transducer (16) and/or the inclination of the bonding tool (18) relative to the contact surface of the component to be bonded is variable or adjustable, respectively.
Claim 4
Dependent Claim
32 words
A bonding head as claimed in claim 1 or claim 2, characterized in that the wire supply (22) is a wire spool mounted on the bonding head (10) for being rotatably driven.
Claim 5
Dependent Claim
37 words
A bonding head as claimed in any of the claims 1 to 3, characterized in that the wire (20) has a wire tension sensor (34) associated therewith for controlling the rotary drive of the wire spool (22).
Claim 6
Dependent Claim
58 words
A bonding head as claimed in any of the claims 1 to 4, characterized in that said bonding head (10) is configured as a rotary head, the axis of rotation (36) extending approximately normal to the contact surface of the component to be bonded and preferably extending through said bonding tool (18) or its bonding tip (19), respectively.
Claim 7
Dependent Claim
77 words
A bonding head as claimed in any of the claims 2 to 5, characterized in that said transducer (16), said bonding tool (18), said wire clamping means (24) and said wire feeding means are disposed approximately in the same plane, and that said transducer (16) and said wire clamping means (24) each are mounted on said bonding head (10) so as to be pivotable about an axis (14 and 28, respectively) extending approximately perpendicularly to said plane.
Claim 8
Dependent Claim
59 words
A bonding head,especially as claimed in any of the claims 1 to 6, characterized in that wire guide means in the form of a preferably flat guide funnel (40) is associated with said wire spool (22), the mouth (42) of said funnel which faces the wire spool (22) extending approximately across the entire width of said wire spool (22).
Claim 9
Dependent Claim
78 words
A bonding head,especially as claimed in any of the claims 1 to 6, characterized in that wire guide means in the form of a wire guide tube centrally extending through said spool (22) is associated with said wire spool (22), said guide tube including a wire insertion funnel (46) on one side thereof and a wire deflecting portion extending from the opposite side, especially in the form of a deflecting tube (48) directed towards said bonding tool (18).
Claim 10
Dependent Claim
86 words
A bonding head as claimed in any of the claims 1 to 8, characterized in that cutting means (82) for severing the wire (20) is provided on the side of said bonding tool (18) opposite the wire feeding side at a slight distance therefrom, wherein the wire (20) after each bonding operation can be withdrawn by said wire clamping means (24) at least to such an extend that its tail is approximately flush with the side of the bonding tool (18) opposite the wire feeding side.
Claim 11
Dependent Claim
27 words
A bonding head as claimed in any of the claims 1 to 9, characterized in that the clamping path of said wire clamping means (24) is adjustable.
Claim 12
Dependent Claim
83 words
A bonding head, especially as claimed in any of the preceding claims, characterized by a guide (60) adjustably mounted on a portion of the bonding head (10) and having an inlet end through which wire (20) from the spool (22) passes and an outlet end (84) adjacent the bonding tip (19) of the bonding tool (18) the guide (60) being mounted in such a manner that the angle at which the wire (20) is supplied to the bonding tip (19) can be adjusted.
Claim 13
Dependent Claim
84 words
A bonding head according to claim 11, characterized in that the guide (60) is mounted for angular movement about a first adjustment axis of an arm (70), and for movement in a direction at right angles to the first adjustment axis and the arm (70) itself is mounted for angular movement about a second adjustment axis ,(74) parallel with the first whereby the angle of the guide (60) can be adjusted while maintaining the outlet end (64) in position adjacent the bonding tip (19).
Claim 14
Dependent Claim
63 words
A bonding head according to either one of claims 11 and 12, characterized by an auxilliary guide (56) mounted intermediate the spool (22) and the wire clamp (24) and adjustable transversely of the feed direction (Z) of the wire (20) whereby to align the wire (20) fed from the spool (22) with the inlet end of the guide (60). comprising a bonding head
Claim 15
Dependent Claim
76 words
A machine/according to any of the preceding claims comprising a support (15) for the components to which wires(20) are to be bonded, the support (15) being mounted for movement in a direction parallel with the axis (36) on which the bonding tip (19) lies towards and away from the bonding tip (19) whereby to cause the bonding tip (19) to press the wire (20)against the contact surface of the component in the operation of the machine.
References Cited (Backward Citations)
No citation records indexed.
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