CN2860710Y - Welding head with adjustable anal filaments - Google Patents
Welding head with adjustable anal filaments Download PDFInfo
- Publication number
- CN2860710Y CN2860710Y CNU200620054242XU CN200620054242U CN2860710Y CN 2860710 Y CN2860710 Y CN 2860710Y CN U200620054242X U CNU200620054242X U CN U200620054242XU CN 200620054242 U CN200620054242 U CN 200620054242U CN 2860710 Y CN2860710 Y CN 2860710Y
- Authority
- CN
- China
- Prior art keywords
- tailfiber
- adjustable
- welding head
- swing component
- core
- 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.)
- Expired - Fee Related
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/74—Apparatus for manufacturing arrangements for connecting or disconnecting semiconductor or solid-state bodies
- H01L24/78—Apparatus for connecting with wire connectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/74—Apparatus for manufacturing arrangements for connecting or disconnecting semiconductor or solid-state bodies and for methods related thereto
- H01L2224/78—Apparatus for connecting with wire connectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/74—Apparatus for manufacturing arrangements for connecting or disconnecting semiconductor or solid-state bodies and for methods related thereto
- H01L2224/78—Apparatus for connecting with wire connectors
- H01L2224/7825—Means for applying energy, e.g. heating means
- H01L2224/783—Means for applying energy, e.g. heating means by means of pressure
- H01L2224/78301—Capillary
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/11—Device type
- H01L2924/13—Discrete devices, e.g. 3 terminal devices
- H01L2924/1304—Transistor
- H01L2924/1305—Bipolar Junction Transistor [BJT]
- H01L2924/13055—Insulated gate bipolar transistor [IGBT]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/11—Device type
- H01L2924/14—Integrated circuits
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The utility model relates to an adjustable tail fiber welding machine head applicable to ultrasonic press welder, comprising a machine frame, a welding head, a driving organ and an adjusting organ. The welding head comprises a swinging element that is firmly joined at the machine frame in a rotating way and a transducer welding groupware. The driving organ comprises a driving groupware that drives the pivot organ of the swinging article revolving. The adjusting organ comprises a mounting element that is installed on the machine frame, an adjustable shell that is installed on the mounting element, a guiding element that is installed below the shell, an adjusting electromagnetism with attracting iron core, and an adjusting element that adjusts the displacement amount of the attracting iron core. The terminal of the attracting iron core at the lower part passes through the opening of the guiding element to contact with the swinging element in a spacing way. The electrification and power failure of the adjusting electromagnetism can gain two different positions of the attracting iron core and then get the tail fiber with two lengths and a solder ball with two diameters. The adjusting element can adjust the ascending margin position of the attracting iron core and the length of the tail fiber. The utility model is convenient and accurate for adjustment.
Description
Technical field
The utility model relates to welder, more particularly, relates to a kind of welding head of welder.
Background technology
At present, the ultrasonic wire bonding machine is widely used in the wire bonds of electronic devices and components, integrated circuit etc., welds as the lead of above device such as big or middle pliotron, FET, various power model, big electric current fast recovery diode, Schottky triode, controllable silicon, IGBT and particular semiconductor power device.Its operation principle is: from ultrasonic wave (the being generally 40-140KHz) signal of supersonic generator, produce dither through transducer, be sent to chopper by the luffing bar, when chopper contacts with lead-in wire and welded part, under the effect of pressure and vibration, metal surface to be welded phase mutual friction, oxide-film is destroyed, and plastic deformation takes place, and causes two pure metal coverings closely to contact, reach the combination of atomic distance, finally form firm mechanical connection.
Existing ultrasonic wire bonding machine mainly comprises welding head, workbench and control system.As shown in Figure 6, welding head comprises frame 1, soldering tip 2, soldering tip driving mechanism 3 and guiding mechanism 4.Described soldering tip 2 comprises swing component, is installed in the transducer weld assembly on the swing component.Common described driving mechanism 3 adopts and is oppositely arranged two electromagnet that are fixed on the frame 1.One section of swing component is arranged between two electromagnet, and electromagnet armature is set on swing component.Another section of described swing component is installed on the described frame 1 by supporting point mechanism 7.Under the effect of control system, the alternation of control electromagnet rotates back and forth around the fulcrum of supporting point mechanism 7 thereby promote described swing component, swings back and forth up and down thereby drive the transducer weld assembly.Cooperate the open closed of control system control wire clamp 5, produce the welding tailfiber, produce ultrasonic wave by the transducer weld assembly again and weld.So-called tailfiber is the welding wire with certain-length 6 that expose welding chopper 23 lower ends in the finger transducer weld assembly.With high voltage tailfiber is discharged before welding, make the tailfiber fusing form the soldered ball of welding usefulness, the size of soldered ball is relevant with the length of tailfiber, and the long more soldered ball of tailfiber is big more, and the short more soldered ball of tailfiber is more little.
Certainly, driving mechanism 3 can also use other to promote the pushing mechanism that swing component swings back and forth to realize.During work, electromagnet energising adhesive electromagnet armature drives swing component and is rotated counterclockwise and rotates, and drives the transducer weld assembly simultaneously and moves down, and drives soldered ball and the welding wire that links to each other (as gold thread etc.) and moves down; After chopper 23 arrival welding work pieces welding finish, by wire clamp 5 welding wire is clamped, this electromagnet cuts off the power supply and another work of electromagnet, the adhesive electromagnet armature, and the drive swing component turns clockwise and upwards rotates, driving the transducer weld assembly simultaneously moves up, because it is motionless that wire clamp 5 clamps welding wire, and chopper to cross the position of welding wire be through hole, welding wire can be movable in through hole, thereby the welding wire 6 of certain-length can be exposed in the lower end of the chopper 23 in the transducer weld assembly, forms tailfiber.Tailfiber forms the back and with high voltage tailfiber is discharged, and makes the tailfiber fusing form the soldered ball of welding usefulness, finishes a welding action, then can enter next working cycles.
In order to adjust the length of tailfiber, on frame 1, be provided with usually and adjust screw 4, adjust the rising extreme position that turns clockwise of swing component and adjust the length of tailfiber by adjusting length that screw 4 stretches out in advance, thereby satisfy the demand of different soldered ball sizes.Yet, adopt the adjustment of this mode to have following defective at least: 1, after adjustment screw 4 is finished adjustment, when soldering tip 2 work, only can form a kind of tailfiber of length, just only can form a kind of soldered ball of diameter, can't adapt to the demand of some needs multiple diameter soldered balls in welding process; 2, can easily not obtain the tailfiber of different length by electrical equipment control, i.e. the soldered ball of different-diameter size.
The utility model content
The technical problems to be solved in the utility model is, at the defective that the above-mentioned existing tailfiber of prior art is adjusted, a kind of fine-tuning tailfiber length is provided, and can obtains the welding head of different length tailfiber in welding process.
The technical scheme that its technical problem that solves the utility model adopts is: construct a kind of adjustable tailfiber welding head, comprise frame, soldering tip, driving mechanism and guiding mechanism; Described soldering tip comprises by supporting point mechanism is rotatable and is fixedly connected on the swing component on the described frame and is installed in transducer weld assembly on the described swing component; Described driving mechanism comprises the driven unit of the described swing component of driving around described supporting point mechanism rotation; Described guiding mechanism comprises rack-mounted fixture, can adjust the shell, the guide that is connected described shell lower end that are installed on the described fixture, be installed in the adjustment electromagnet that has pull-core in the described shell and be arranged on the adjustment part that described pull-core mobile displacement is adjusted in described shell upper end; Offer perforate on the described guide, the end of described pull-core passes described perforate and contacts spacing with described swing component.
In the adjustable tailfiber welding head of the present utility model, described pull-core below end is arranged with positioning sleeve, and described positioning sleeve comprises and contacted contact site of described swing component and the location division that is provided with on described contact site; The cross section of described location division is a cydariform, and is provided with the perforate of fastening described pull-core; Then offer on the described guide and the described location division straight trough that the described location division of restriction rotates that is slidingly matched.
In the adjustable tailfiber welding head of the present utility model, described guide also offers the circular hole that is positioned at described straight trough top, is provided with the sliding shaft sleeve that is set on the described pull-core in described circular hole.
In the adjustable tailfiber welding head of the present utility model, described adjustment part is and the adjustment screw of upper end by being threaded of described shell that the limes superiors position that described pull-core moves is limited in the lower end of described adjustment screw.
In the adjustable tailfiber welding head of the present utility model, the outer surface of described shell is provided with connecting thread, and described fixture is provided with the screw that cooperates with the connecting thread of described shell.
In the adjustable tailfiber welding head of the present utility model, described fixture is provided with to crack and forms main part and swelling portion; Described swelling portion is provided with the swelling screw of the roof pressure described swelling of distending portion on described main part.
In the adjustable tailfiber welding head of the present utility model, described guiding mechanism is located on the position of the described swing component of restriction limit by row on supporting point mechanism turns clockwise.
In the adjustable tailfiber welding head of the present utility model, described driven unit comprises that relative fixed is at two electromagnet on the described frame and be arranged on the electromagnet armature that is replaced adhesive on the described swing component by described two electromagnet; Described driven unit also comprises can limit described swing component is rotated counterclockwise descending extreme position around supporting point mechanism block piece.
In the adjustable tailfiber welding head of the present utility model, described supporting point mechanism is the rubber-like steel disc, and an end of described steel disc is fixed on the described frame, the other end is fixed on the described swing component.
In the adjustable tailfiber welding head of the present utility model, the upper extremity of described pull-core is equipped with cushion collar.
Implement adjustable tailfiber welding head of the present utility model, have following beneficial effect: the shell of guiding mechanism is adjustable to be installed on the frame, and the adjustment electromagnet energising of guiding mechanism makes pull-core be in attracting state; The turn shell arrives the up extreme position that suitable restriction swing component turns clockwise around supporting point mechanism up and down, obtains the tailfiber of first kind of length requirement under the energising situation this moment; Allow the adjustment electromagnet of guiding mechanism cut off the power supply then, pull-core is in relaxation state, adjusts screw, to adjust the up extreme position of pull-core, thereby realize the adjustment of another up extreme position that described swing component is turned clockwise, to obtain the tailfiber of another length.Therefore by changing, can obtain the tailfiber of two kinds of length, i.e. the soldered ball of two kinds of different-diameter sizes to adjusting the power on/off control of electromagnet.Therefore adjustable tailfiber welding head of the present utility model has easy to adjust, control advantage simply accurately.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the cross-sectional schematic of the adjustable tailfiber welding head of the utility model;
Fig. 2 is another angle cross-sectional schematic of guiding mechanism and Fig. 1 vertical angle of the adjustable tailfiber welding head of the utility model;
Fig. 3 is the elevational schematic view of the guide of the adjustable tailfiber welding head of the utility model;
Fig. 4 is the schematic diagram that the guiding mechanism of the adjustable tailfiber welding head of the utility model is located at drive division one side of swing component;
Fig. 5 is the schematic diagram that the guiding mechanism of the adjustable tailfiber welding head of the utility model is located at the horizontal part below of swing component;
Fig. 6 is the schematic diagram of the welding head of prior art.
The specific embodiment
As shown in Figure 1 and Figure 2, adjustable tailfiber welding head of the present utility model can be used on the ultrasonic wire bonding machine, comprises frame 10, soldering tip 20, driving mechanism 30 and guiding mechanism 40.Described frame 10 is as the support member of whole welding head, the part of only schematically having drawn and being associated with the utility model among the figure.Described head also comprises other parts, for example wire clamp 50, payingoff mechanism or the like.
Described soldering tip 20 comprises swing component 21 and is fixedly mounted on transducer weld assembly 22 on the swing component 21.Described swing component 21 can be formed by a plurality of combination of components, also can be an independent part, and it is by supporting point mechanism 70 rotating being fixedly mounted on the described frame 10.Described supporting point mechanism 70 is the rubber-like steel disc, and an end of described steel disc is fixed on the described frame 10, the other end is fixed on the described swing component 21, thereby makes described swing component 21 to rotate as fulcrum with an end of steel disc.Described swing component 21 comprises horizontal part 211, separately is arranged on the connecting portion 212 and the drive division 213 of described horizontal part 211 both sides.Offer perforate 11 on the described frame 10, described horizontal part 211 passes described perforate 11 and is provided with.Described steel disc is fixedlyed connected with described connecting portion 212 at the end of described connecting portion 212.Described drive division 213 cooperates whole swing component 21 rotations of driving with described driving mechanism 30; 212 of described connecting portions are fixedlyed connected with described transducer weld assembly 22.
Described driving mechanism 30 comprises the driven unit of the described swing component 21 of driving around described supporting point mechanism 70 rotations.In the present embodiment, described driven unit comprises that relative fixed is at two electromagnet on the described frame 10 and be arranged on electromagnet armature 31 on the drive division 213 of described swing component 21.Described electromagnet is up electromagnet 32 and downlink electrical magnet 33.When work, the control system of ultrasonic wire bonding machine is controlled described electromagnet alternation, thereby replaces the described electromagnet armature 31 of adhesive, thereby realizes driving described swing component 21 around described supporting point mechanism 70 rotations.For the swing lower limit that guarantees that described swing component 21 is rotated counterclockwise, described driven unit also comprises block piece 34.When descending electromagnet 33 driving swing components 21 are rotated down counterclockwise, stop down the spacing of described block piece 34, make described swing component 21 stop at descending extreme position.Block piece 34 also can adopt the mode of threaded adjustment to adjust the descending extreme position that swing component 21 is rotated counterclockwise.
Described guiding mechanism 40 comprises the fixture 41 that is installed on the frame 10, can adjust the shell 42, the guide 43 that is connected described shell 42 lower ends that are installed on the described fixture 41, be installed in and have the adjustment electromagnet 44 of pull-core 441 in the described shell 42 and be arranged on the adjustment part 45 that described pull-core 441 up mobile displacements are adjusted in described shell 42 upper ends.Offer perforate on the described guide 43, the below end of described pull-core 441 passes described perforate and contacts spacing with described swing component 21.
Described pull-core 441 below ends are arranged with positioning sleeve 46, and described positioning sleeve 46 comprises the location division 462 with described swing component 21 contacted contact sites 461 and setting on described contact site 461.The cross section of described location division 462 is a cydariform, and is provided with the perforate of fastening described pull-core 441.As shown in Figure 3, offer on the described guide 43 and described location division 462 straight trough 432 that the described location division of restriction 462 rotates that is slidingly matched.Width between two vertical planes of the width of described straight trough 432 and described location division 462 cooperates for being slidingly matched, guarantee that described pull-core 441 can not rotate, thereby can guarantee the motion down in vertical direction of described positioning sleeve 46 accurately, to obtain good precision.
Described guide 43 also offers the circular hole 433 that is positioned at described straight trough 432 tops, is provided with the sliding shaft sleeve 47 that is set on the described pull-core 441 in described circular hole 433.Under the effect of described sliding shaft sleeve 47, improved the positional precision of described pull-core 441 effectively, guaranteed the precision that pull-core 441 moves up and down.
Described adjustment part 45 for the adjustment screw of upper end by being threaded of described shell 42.Can adjust the up extreme position of described pull-core 441 by described adjustment screw, thereby realize the turn clockwise adjustment of up extreme position of swing component 21.
The outer surface of described shell 42 is provided with connecting thread, and described fixture 41 is provided with the screw that cooperates with the connecting thread of described shell 42.Thereby can realize the adjustment of the tailfiber length of large-size by shell 42, then can realize the adjustment of the tailfiber length of another size by adjusting screw.Described fixture 41 is provided with to crack and forms main part 411 and swelling portion 412; Described swelling portion 412 is provided with the swelling screw 413 of the roof pressure described swelling of distending portion 412 on described main part 411.
The upper extremity of described pull-core 441 is equipped with cushion collar 442, realizes up spacingly thereby pull-core 441 withstands described adjustment screw by cushion collar 442, and cushion collar can reduce the impulsive force when spacing, improves precision.
During adjustment, at first unclamp described swelling screw 413, adjustment electromagnet 44 energisings of described guiding mechanism make pull-core 441 be in attracting state, and the described shell 42 of turn arrives suitable position up and down; Tighten described swelling screw 413 then, make described swelling portion 412 strut, thereby lock described shell 42.Obtain the tailfiber of first kind of length requirement this moment.Allow then and adjust the electromagnet outage, pull-core 441 is in relaxation state, adjusts described adjustment screw, to adjust the up extreme position of described pull-core 441, thereby realize the adjustment of another up extreme position that described swing component 21 is turned clockwise, to obtain the tailfiber of another length.Therefore by to adjusting the power on/off control of electromagnet 44, can obtain the tailfiber of two kinds of length, i.e. the soldered ball of two kinds of different-diameter sizes.
During work, described downlink electrical magnet 33 work, adhesive electromagnet armature 31, drive described swing component 21 and be rotated counterclockwise, and drive described transducer weld assembly 22 and move down, drive soldered ball and the welding wire that links to each other (as gold thread etc.) and move down, under the stopping of described block piece 34, stop, after chopper 23 arrival welding work pieces welding finished, wire clamp 50 closures clamped welding wire, simultaneously, downlink electrical magnet 33 quits work, and by described up electromagnet 32 work, the described electromagnet armature 31 of adhesive, driving described swing component 21 turns clockwise, and drive described transducer weld assembly 22 and move up, reserve tailfiber, i.e. the welding wire 6 of one section certain-length.When described swing component 21 rotates up clockwise, when described adjustment electromagnet 44 cuts off the power supply, described swing component 21 promotes described pull-core 441 and moves upward, described pull-core 441 arrives the end of described adjustment screw and spacing stopping, thereby spacing described swing component 21 obtains a kind of tailfiber of length; And when 44 energisings of described adjustment electromagnet, the described pull-core 441 of adhesive makes pull-core 441 to move up, thereby spacing described swing component 21 obtains the tailfiber of another length in the another location.The energising by controlling described electromagnet and the state of outage can obtain 21 two kinds of different upper limit positions of swing component, thereby obtain the tailfiber of two kinds of different lengths, have realized the adjustment to the different length demand of tailfiber.
In the present embodiment, described guiding mechanism 40 is arranged on the top of the horizontal part 211 of described swing component 21, with the Top Runby that turns clockwise of spacing described swing component 21.Understandable, described guiding mechanism 40 can also be located at other and limit described swing component 21 and turn clockwise and go up on the position of limit by row, and the outside of the drive division 213 of for example described swing component 21 is relative with described block piece 34, as shown in Figure 4; The below of perhaps described horizontal part 211, as shown in Figure 5.
Claims (10)
1, a kind of adjustable tailfiber welding head comprises frame, soldering tip, driving mechanism and guiding mechanism; Described soldering tip comprises by supporting point mechanism is rotatable and is fixedly connected on the swing component on the described frame and is installed in transducer weld assembly on the described swing component; Described driving mechanism comprises the driven unit of the described swing component of driving around described supporting point mechanism rotation; It is characterized in that described guiding mechanism comprises rack-mounted fixture, can adjust the shell, the guide that is connected described shell lower end that are installed on the described fixture, be installed in the adjustment electromagnet that has pull-core in the described shell and be arranged on the adjustment part that described pull-core mobile displacement is adjusted in described shell upper end; Offer perforate on the described guide, the end of described pull-core passes described perforate and contacts spacing with described swing component.
2, adjustable tailfiber welding head according to claim 1 is characterized in that, described pull-core below end is arranged with positioning sleeve, and described positioning sleeve comprises and contacted contact site of described swing component and the location division that is provided with on described contact site; The cross section of described location division is a cydariform, and is provided with the perforate of fastening described pull-core; Then offer on the described guide and the described location division straight trough that the described location division of restriction rotates that is slidingly matched.
3, adjustable tailfiber welding head according to claim 2 is characterized in that, described guide also offers the circular hole that is positioned at described straight trough top, is provided with the sliding shaft sleeve that is set on the described pull-core in described circular hole.
4, adjustable tailfiber welding head according to claim 1 is characterized in that, described adjustment part is and the adjustment screw of upper end by being threaded of described shell that the limes superiors position that described pull-core moves is limited in the lower end of described adjustment screw.
5, adjustable tailfiber welding head according to claim 1 is characterized in that the outer surface of described shell is provided with connecting thread, and described fixture is provided with the screw that cooperates with the connecting thread of described shell.
6, adjustable tailfiber welding head according to claim 5 is characterized in that, described fixture is provided with to crack and forms main part and swelling portion; Described swelling portion is provided with the swelling screw of the roof pressure described swelling of distending portion on described main part.
7, adjustable tailfiber welding head according to claim 1 is characterized in that, described guiding mechanism is located on the position of the described swing component of restriction limit by row on supporting point mechanism turns clockwise.
8, adjustable tailfiber welding head according to claim 1 is characterized in that, described driven unit comprises that relative fixed is at two electromagnet on the described frame and be arranged on the electromagnet armature that is replaced adhesive on the described swing component by described two electromagnet; Described driven unit also comprises can limit described swing component is rotated counterclockwise descending extreme position around supporting point mechanism block piece.
9, adjustable tailfiber welding head according to claim 1 is characterized in that, described supporting point mechanism is the rubber-like steel disc, and an end of described steel disc is fixed on the described frame, the other end is fixed on the described swing component.
10, adjustable tailfiber welding head according to claim 1 is characterized in that the upper extremity of described pull-core is equipped with cushion collar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200620054242XU CN2860710Y (en) | 2006-01-20 | 2006-01-20 | Welding head with adjustable anal filaments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200620054242XU CN2860710Y (en) | 2006-01-20 | 2006-01-20 | Welding head with adjustable anal filaments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2860710Y true CN2860710Y (en) | 2007-01-24 |
Family
ID=37658338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200620054242XU Expired - Fee Related CN2860710Y (en) | 2006-01-20 | 2006-01-20 | Welding head with adjustable anal filaments |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2860710Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110497166A (en) * | 2019-08-13 | 2019-11-26 | 成都精蓉创科技有限公司 | A kind of deep chamber weldering chopper and its production technology for full-automatic wirebond machine |
-
2006
- 2006-01-20 CN CNU200620054242XU patent/CN2860710Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110497166A (en) * | 2019-08-13 | 2019-11-26 | 成都精蓉创科技有限公司 | A kind of deep chamber weldering chopper and its production technology for full-automatic wirebond machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070124 Termination date: 20140120 |