US3928749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for automatic production of semi-conductor components
Assignee: Individual
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Filing: 1974-10-09
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Granted: 1975-12-23
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Expires: 1994-10-09
Abstract
Abstract Apparatus for connecting wires to selected points on a semiconductor crystal and to a leadframe is provided in which a working head, which is vertically adjustable, is used for applying the wires to the crystal and to the leadframe. The working head is movable in accordance with the movement of two separate devices to automatically reorient the working head to several different positions as required by the number and locations of connections to be made. Both devices are program controlled. In addition, a crystal adjusting device is provided for angularly positioning the crystal with respect to the means for moving the working head.
Inventors
- 👤 Eggert Herrmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:14
CPC Classifications
H; H10; H10W; H10W72/00; H10W72/071; H10W72/075; H10W72/07531; H10W72/07532; H10W72/07533; H10W72/07551; H10W72/50; H10W72/551; H10W72/552; H10W72/5522; H10W72/5524
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
148 words
A machine for automatically attaching connecting wires at selected connection positions of a semi-conductor crystal and leadframe comprising a vertically adjustable working head, and horizontally movable means on said working head for applying connecting wires to the crystal and the leadframe, a first program-controlled drive device for moving the working head to preselected working points on the crystal, a second programcontrolled drive device for moving the working head to preselected working points on the leadframe; and a crystal adjusting device for adjusting the relative lateral position of said crystal between the first drive device and the crystal, a lead-frame adjusting device for setting relative angular position of said leadframe between the first drive device and the crystal and between the second drive device and the leadframe, and program control means controlling the said drive devices, said program control means having numerical control means with fixed value reprogrammable memories.
Claim 2
Dependent Claim
148 words
A machine for automatically attaching connecting wires at selected connection positions of a semi-conductor crystal and leadframe comprising a vertically adjustable working head, and horizontally movable means on said working head for applying connecting wires to the crystal and the leadframe, a first program-controlled drive device for moving the working head to preselected working points on the crystal, a second programcontrolled drive device for moving the working head to preselected working points on the leadframe; and a crystal adjusting device for adjusting the relative lateral position of said crystal between the first drive device and the crystal, a lead-frame adjusting device for setting relative angular position of said leadframe between the first drive device and the crystal and between the second drive device and the leadframe, and program control means controlling the said drive devices, said program control means having numerical control means with fixed value reprogrammable memories.
Claim 3
Dependent Claim
72 words
A machine according to claim 1, wherein the first drive device comprises two stepping motors connected to said program control means, a cross table having a movable part, said stepping motors being connected to the movable part of the cross table, and means for coupling the movable part to the working head during the working phases of said working head in the which connections are produced between the wire and the crystal.
Claim 4
Dependent Claim
75 words
A machine according to claim 2, wherein the means for coupling the movable part of the cross table to the working head comprises a pivotable arm having a guide part, said working head having a guide for accepting said guide part, said pivoting arm being pivotable between a first position in which said guide part is not connected with said guide and a second position in which said guide part is connected to said guide.
Claim 5
Dependent Claim
20 words
A machine according to claim 3, wherein the guide part is a cone and the guide is a conical opening.
Claim 6
Dependent Claim
60 words
A machine according to claim 1, wherein the second drive device comprises two stepping motors, a second cross table having a movable part, said stepping motors being connected for moving said movable part, means for coupling the movable part of the second cross table with the working head when connections between the wire and the leadframe are to be produced.
Claim 7
Dependent Claim
89 words
A machine in accordance with claim 5, wherein the means for coupling the movable part of the second cross table with the working head comprises a second pivotable arm, said pivoting arm being coupled to a second guide part, said working head having a second guide for accepting said second guide part, said pivoting arm being movable between a first position in which said second guide part is not connected to said second guide and another position in which said second guide part is connected to said second guide.
Claim 8
Dependent Claim
22 words
A machine according to claim 6, wherein the second guide part is a cone and the second guide is a conical opening.
Claim 9
Dependent Claim
58 words
A machine according to claim 6, wherein the means for coupling the movable part of the second cross table and the second pivoting arm comprises a third cross table, having a movable part which carries the second pivotable arm, said third cross table being connected to the movable part of the second cross table in a rigid manner.
Claim 10
Dependent Claim
34 words
A machine according to claim 1, wherein the working head is mounted on a carrier plate, a fourth horizontal cross table on which said carrier plate is mounted, said carrier plate having conical guides.
Claim 11
Dependent Claim
44 words
A machine according to claim 9, further comprising a vertical guide means mounted on said carrier plate and working head for vertically guiding movement of said working head with respect to said carrier plate, said vertical guide means comprising a longitudinal guide with ballbearings.
Claim 12
Dependent Claim
34 words
A machine according to claim 3, comprising a cam control means, said cam control means for controlling the said pivoting arms and for carrying out the upward and downward movement of the working head.
Claim 13
Dependent Claim
63 words
A machine according to claim 11, wherein the cam control means comprises two first pivotally journalled double arm levers, a plurality of cam discs and a motor for driving said cam discs, one end of each said double arm lever coopeRating with another one of said cam discs, the other end of said double arm levers controlling the movement of said pivoting arms.
Claim 14
Dependent Claim
56 words
A machine according to claim 12 wherein the double arm levers are positioned under the pivoting arms for normally moving the pivoting arms out of engagement with the working head, and spring means for normally urging the pivoting arms into engagement with the said working head when the double arm levers release the said pivoting arms.
Claim 15
Dependent Claim
31 words
A machine according to claim 12 further comprising set screws mounted between the double arm levers and the pivoting arms for setting the height to which the pivoting arms are raised.
Claim 16
Dependent Claim
66 words
A machine according to claim 11, wherein the cam control means comprises two second pivotally mounted double arm levers, one end of each second double arm lever being arranged to cooperate with a second cam disc, said second cam disc being driven by a motor, the other end of each of the double arm levers control the upward and downward movement respectively of the working head.
Claim 17
Dependent Claim
36 words
A machine according to claim 15, further comprising abutment means mounted on said working head for engaging said second double arm levers, set screw means mounted between said second double arm levers and said abutment means.
Claim 18
Dependent Claim
57 words
A machine according to claim 16, further comprising spring means between the end of one of the double arm levers and said abutment means for holding down the working head, said spring means being effective on the production of a connection between the wire and the leadframe to add to the effective weight of the working head.
Claim 19
Dependent Claim
84 words
A machine according to claim 1, wherein the crystal adjusting device for adjusting the reference zero point of the program controlled course of movement of the first drive device towards a defined reference point of the crystal comprises a fifth cross table having a movable part which movable part can be displaced and fixed in a selected position, manipulator means for displacing said fifth table, said manipulator means and the stepping motors of the first drive device being carried by said fifth cross table.
Claim 20
Dependent Claim
48 words
A machine according to claim 18, further comprising magnet means and a brake for cooperating with said magnet means, said brake and magnet means forming a mechanical connection when activated between said fifth cross table and said manipulator to fix the position of the said fifth cross table.
Claim 21
Dependent Claim
98 words
A machine according to claim 1, characterized in that the leadframe adjusting device for setting the angular position of the crystal in such a manner that the reference axes of the crystal coincide with the directions of movement of the stepping motors of the first drive device and for setting the second drive device to the angular position, which is also turned on turning the crystal, of the leadframe comprises a rotary table for the leadframe provided with the crystal and means for turning the second drive device through the same angular amount as the said rotary table.
Claim 22
Dependent Claim
26 words
A machine according to claim 20 further comprising a second holding magnet and a second brake part for fixing the position of the leadframe adjusting device.
Claim 23
Dependent Claim
76 words
A machine according to claim 20 further comprising a lever plate fixedly mounted on the rotary table and connected to the manipulator by a first linkage, a second linkage and lever connected to said lever plate, rotary column, said lever being non-rotatably mounted on said column, said column carrying the second drive device, the effective lengths of the lever arms on the lever plate and the lever attached to the rotary column being equal in size.
Claim 24
Dependent Claim
35 words
A machine according to claim 22, wherein the linkage between the manipulator and the lever plate has a second lever mounted on the manipulator and a rod which is pivotally mounted on the lever plate.
Claim 25
Dependent Claim
25 words
A machine according to claim 22, wherein the linkage between the lever plate and the lever attached to the rotary column further comprises a rod.
Claim 26
Dependent Claim
29 words
A machine according to claIm 18, wherein the manipulator for the crystal adjusting device and the manipulator for the leadframe adjusting device are combined to form a single manipulator.
Claim 27
Dependent Claim
89 words
A machine according to claim 25, wherein the manipulator has a handle on one end, the manipulator comprising a rod which can be turned at the end opposite to the handle, the rod being pivotally mounted, the lever for connection with the lever plate being mounted between the ends of the rod in a non-rotary manner, a guide rod mounted in a rotatable and pivoting manner, the guide rod being connected in a non-rotatable manner via the said guide column with the movable part of the fifth cross table.
Claim 28
Dependent Claim
59 words
A machine according to claim 1, further comprising a program shaft and operating cams carried on said program shaft, a plurality of proximity switches (NS1, NS2, . . . NS5), and an electronic pulse generator for converting signals from said proximity switches into pulses, a coding pin board, said pulses causing switching on interrogation of the coding pin board.
Claim 29
Dependent Claim
24 words
A machine according to claim 27, wherein the program shaft is driven by a stepping motor which stepping motor also drives the cam control.
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) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |