CN115008089B - Coarse aluminum wire welding device, debugging method and coarse aluminum wire welding device equipment - Google Patents

Coarse aluminum wire welding device, debugging method and coarse aluminum wire welding device equipment Download PDF

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Publication number
CN115008089B
CN115008089B CN202110241740.4A CN202110241740A CN115008089B CN 115008089 B CN115008089 B CN 115008089B CN 202110241740 A CN202110241740 A CN 202110241740A CN 115008089 B CN115008089 B CN 115008089B
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welding
axis
image
aluminum wire
linear guide
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CN115008089A (en
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裴开
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Shenzhen Xinyichang Kaijiu Automation Equipment Co ltd
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Shenzhen Xinyichang Kaijiu Automation Equipment Co ltd
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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
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/02—Carriages for supporting the welding or cutting element
    • B23K37/0211—Carriages for supporting the welding or cutting element travelling on a guide member, e.g. rail, track
    • 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
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or 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
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/0426—Fixtures for other work
    • B23K37/0452—Orientable fixtures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
    • H01L21/67005—Apparatus not specifically provided for elsewhere
    • H01L21/67011—Apparatus for manufacture or treatment
    • H01L21/67138—Apparatus for wiring semiconductor or solid state device

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Wire Bonding (AREA)
  • Image Processing (AREA)

Abstract

The embodiment of the application belongs to the technical field of semiconductor equipment, and relates to a coarse aluminum wire welding device, a debugging method and coarse aluminum wire welding device equipment. The technical scheme provided by the application comprises the following steps: the welding mechanism is used for welding the workpiece at the welding position; the image positioning mechanism is arranged at one side of the welding mechanism and is positioned at the front end of the welding mechanism along the feeding direction of the feeding track; the image positioning mechanism comprises a moving mechanism and a detecting mechanism, and the detecting mechanism is used for carrying out image recognition positioning on the workpiece at the image recognition position. The work piece is the support and sets up the wafer on the support, and crude aluminum wire bonding machine can carry out wire bonding to support and wafer, and crude aluminum wire bonding machine's image positioning mechanism and welding mechanism separate, through the parallel independent work of image positioning mechanism and welding mechanism, greatly improved crude aluminum wire bonding machine's production efficiency, can satisfy the semiconductor components and parts and expand the productivity demand of producing to encapsulation equipment.

Description

Coarse aluminum wire welding device, debugging method and coarse aluminum wire welding device equipment
Technical Field
The application relates to the technical field of semiconductor equipment, in particular to a coarse aluminum wire welding device, a debugging method and coarse aluminum wire welding device equipment.
Background
In the traditional coarse aluminum wire welding machine, a camera lens is fixed on a welding head, a welding head moves to a drawing position for image recognition and positioning during working, then the welding head moves to a welding position for welding wires, and the camera lens and welding parts are arranged together, so that the welding head is complex to assemble, adjust and maintain, the working mode of serial operation of drawing and welding wires is low in efficiency, and the method is difficult to adapt to the requirement of expanding production of semiconductor components on higher and higher productivity of packaging equipment.
Disclosure of Invention
The invention aims to provide a crude aluminum wire welding device, which solves the technical problems of complex assembly, adjustment and maintenance of the existing welding head and low working mode efficiency of drawing and welding wire serial operation.
In order to solve the above-mentioned problems, the embodiment of the present invention provides the following technical solutions:
a thick aluminum wire bonding apparatus comprising:
The welding mechanism is used for welding the workpiece at the welding position;
the image positioning mechanism is arranged at one side of the welding mechanism and is positioned at the front end of the welding mechanism along the feeding direction of the feeding track;
The image positioning mechanism comprises a moving mechanism and a detecting mechanism, the detecting mechanism is arranged on the moving mechanism, the moving mechanism drives the detecting mechanism to move, and the detecting mechanism is used for carrying out image recognition positioning on a workpiece at an image recognition position; the detection mechanism comprises a CCD camera and a light source, and the light source is arranged on the CCD camera.
Further, the detection mechanism further comprises a lens mounting plate and a camera mounting seat, wherein the lens mounting plate is arranged on the moving mechanism, the camera mounting seat is arranged on the lens mounting plate, and the CCD camera is arranged on the camera mounting seat.
Further, the image positioning mechanism comprises a moving mechanism and a detecting mechanism, the detecting mechanism is arranged on the moving mechanism, the moving mechanism drives the detecting mechanism to move, and the detecting mechanism performs image recognition positioning on the workpiece.
Further, the detection mechanism further comprises a lens mounting plate and a camera mounting seat, wherein the lens mounting plate is arranged on the moving mechanism, the camera mounting seat is arranged on the lens mounting plate, and the CCD camera is arranged on the camera mounting seat.
Further, the moving mechanism is an XY-axis moving platform, the XY-axis moving platform comprises a bottom plate, an X-axis driving piece and a Y-axis driving piece, the X-axis driving piece and the Y-axis driving piece are arranged on the bottom plate, the X-axis driving piece drives the detecting mechanism to move along the X-axis direction, and the Y-axis driving piece drives the detecting mechanism to move along the Y-axis direction.
Further, the X-axis driving piece comprises a first stepping motor, a first screw rod and a first linkage block, the first linkage block is arranged on a nut seat of the first screw rod, the Y-axis driving piece comprises a second stepping motor, a second screw rod and a second linkage block, and the second linkage block is arranged on a nut seat of the second screw rod.
Further, the XY-axis moving platform further comprises an X-axis guiding assembly and a Y-axis guiding assembly;
The X-axis guide assembly comprises a first X-axis linear guide rail, a first X-axis sliding block, a second X-axis linear guide rail and a second X-axis sliding block, wherein the first X-axis linear guide rail is arranged on the top surface of the bottom plate, the first X-axis sliding block is arranged on the X-axis linear guide rail and is connected with the bottom surface of the first linkage block, the second X-axis linear guide rail is arranged on the bottom surface of the lens mounting plate, and the second X-axis sliding block is arranged on the second X-axis linear guide rail and is connected with the top surface of the second linkage block.
Further, the Y-axis guide assembly comprises a first Y-axis linear guide rail, a first Y-axis sliding block, a second Y-axis linear guide rail and a second Y-axis sliding block, wherein the first Y-axis linear guide rail is arranged on the top surface of the bottom plate, the first Y-axis sliding block is arranged on the Y-axis linear guide rail and is connected with the bottom surface of the first linkage block, the second Y-axis linear guide rail is arranged on the bottom surface of the lens mounting plate, and the second Y-axis sliding block is arranged on the second Y-axis linear guide rail and is connected with the top surface of the second linkage block.
Further, the welding mechanism comprises a Z axis, a welding head and a cutter, wherein the welding head and the cutter are arranged on the Z axis, and the cutter is arranged on one side of the welding head.
In order to solve the technical problems set forth above, the embodiment of the invention also provides a method for debugging the coarse aluminum wire welding line device, which adopts the following technical scheme:
The debugging method of the coarse aluminum wire welding line device is based on the coarse aluminum wire welding line device and comprises the following steps of:
image level and scale correction;
Coarse adjustment of image offset;
and (5) correcting image offset.
Further, the step of image level and scale correction includes:
shifting materials to an image recognition position, and setting a correction distance S1 on an upper mechanism image recognition template Model 1;
lens left shift S1/2, template recognition Model1, obtain image coordinates (PX 1, PY 1);
The lens moves to the right S1, the template identifies the Model1, and image coordinates (PX 2, PY 2) are obtained;
Calculating the absolute value of coordinates of two image identifications:
ΔPX1＝|PX1－PX2|，ΔPY1＝|PY1－PY2|；
By adjusting the camera angle, the resulting Δpy1 is made 0, i.e., the horizontal correction is completed, wherein when Δpy1=0, the image ratio is: pr=s1/Δpx1;
the step of coarse adjustment of the image offset comprises the following steps:
Shifting to a welding position, and welding a welding spot at the current position, wherein the welding spot coordinates of a welding head are (BX 1, BY 1);
The material is shifted back to the image recognition position, the image is aligned to the center position of the welding spot, and lens coordinates (JX 1, JY 1) are recorded;
Acquiring an image offset:
ΔPX2’＝BX1－JX1
ΔPY2’＝BY1－JY1；
the image offset correction step includes:
The dial is to the image recognition position to carry on the image recognition positioning, record the image positioning point data (PX 3, PY 3), the lens coordinate (JX 2, JY 2), then the image coordinate is:
(PX3＊PR+JX2，PY3＊PR+JY2)；
the method comprises the steps of stirring to a welding position, welding a welding spot, and welding coordinates of a welding head are as follows:
BX2＝PX3＊PR+JX2+ΔPX2’
BY2＝PY3＊PR+JY2+ΔPY2’；
And (3) pulling the material back to the image recognition position to check the condition of the welding spot, moving the lens to the position right above the center of the welding spot, and recording the coordinates (JX 3 and JY 3) of the lens, wherein the image offset is as follows:
ΔPX2＝JX3－(PX3＊PR+JX2)
ΔPY2＝JY3－(PY3＊PR+JY2)；
Determining a final image offset (Δpx, Δpy) based on a comparison of the image recognition position and the actual welding position:
ΔPX＝ΔPX2’+ΔPX2
ΔPY＝ΔPY2’+ΔPY2。
in order to solve the technical problems set forth above, the embodiment of the invention also provides a device for welding a thick aluminum wire, which adopts the following technical scheme:
the device comprises a machine body, a workbench, a material conveying track and the crude aluminum wire welding device debugged by the debugging method of the crude aluminum wire welding device, wherein the workbench is arranged on the machine body, the welding mechanism is arranged on the machine body, and the image positioning mechanism and the material conveying track are arranged on the workbench.
Compared with the prior art, the embodiment of the invention has the following main beneficial effects:
The image positioning mechanism of the crude aluminum wire welding machine is separated from the welding mechanism, so that the image positioning mechanism and the welding mechanism work independently, the image positioning mechanism is arranged at the front end of the welding mechanism, when a workpiece is conveyed to an image recognition position of the image positioning mechanism, the image positioning mechanism can perform image recognition positioning on the workpiece first, when the workpiece is conveyed to the welding position, the welding mechanism welds the workpiece again, and the image recognition positioning of the workpiece on a subsequent station can be performed while welding, so that the aim that the image positioning mechanism and the welding mechanism work synchronously and independently is achieved; the image positioning mechanism and the welding mechanism work independently in parallel, so that the production efficiency of the crude aluminum wire welding machine is greatly improved, the load of the whole welding head is reduced, the running stability of equipment is improved, and the capacity requirement of semiconductor component expansion on packaging equipment can be met.
Drawings
In order to more clearly illustrate the solution of the present invention, a brief description will be given below of the drawings required for the description of the embodiments, it being apparent that the drawings in the following description are some embodiments of the present invention and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of a device for wire bonding a thick aluminum wire in an embodiment of the invention;
FIG. 2 is a schematic diagram of the connection relationship between an image positioning mechanism, a workbench and a feeding track in an embodiment of the invention;
FIG. 3 is a schematic structural diagram of an image positioning mechanism according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a welding mechanism according to an embodiment of the present invention.
Reference numerals illustrate:
1. A welding mechanism; 11. a Z axis; 12. a welding head; 13. a cutter; 2. a detection mechanism; 3. a moving mechanism; 31. a bottom plate; 32. an X-axis driving member; 321. a first stepping motor; 322. a first screw rod; 323. a first linkage block; 33. a Y-axis driving member; 331. a second stepping motor; 332. a second screw rod; 333. a second linkage block; 34. an X-axis guide assembly; 341. a first X-axis linear guide rail; 342. a first X-axis slider; 343. a second X-axis linear guide rail; 344. a second X-axis slider; 35. a Y-axis guide assembly; 351. a first Y-axis linear guide rail; 352. a first Y-axis slider; 353. a second Y-axis linear guide rail; 354. a second Y-axis slider; 41. a lens mounting plate; 42. a camera mount; 43. a CCD camera; 44. a light source; 5. a body; 6. a work table; 7. a material conveying track; 8. and (3) clamping.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The terms "comprising" and "having" and any variations thereof in the description of the invention and the claims and the foregoing description of the drawings are intended to cover non-exclusive inclusions. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
In order to enable those skilled in the art to better understand the present invention, a technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
Examples
As shown in fig. 1 and 2, a thick aluminum wire bonding apparatus includes:
the welding mechanism 1 is used for welding the workpieces conveyed to the welding position on the conveying track 7;
the image positioning mechanism is arranged on one side of the welding mechanism 1 and is used for carrying out image recognition positioning on the workpiece conveyed to the image recognition position on the conveying track 7, and the image positioning mechanism is positioned at the front end of the welding mechanism 1 along the conveying direction of the conveying track 7.
According to the coarse aluminum wire welding line device provided by the embodiment of the invention, the image positioning mechanism of the coarse aluminum wire welding line machine is separated from the welding mechanism 1, so that the image positioning mechanism and the welding mechanism 1 work independently, the image positioning mechanism is arranged at the front end of the welding mechanism 1, when a workpiece is conveyed to the image recognition position of the image positioning mechanism, the image positioning mechanism can perform image recognition positioning on the workpiece first, when the workpiece is conveyed to the welding position, the welding mechanism 1 welds the workpiece again, and the image recognition positioning of the workpiece on a subsequent station can be performed while welding, so that the purpose that the image positioning mechanism and the welding mechanism 1 work synchronously and independently is achieved; the image positioning mechanism and the welding mechanism 1 work independently in parallel, so that the production efficiency of the crude aluminum wire welding machine is greatly improved, the load of the whole welding head is reduced, the running stability of equipment is improved, and the capacity requirement of semiconductor component expansion on packaging equipment can be met.
The coarse aluminum wire welding device can be applied to the fields of semiconductor packaging equipment, power device image acquisition and recognition systems and the like, and the power device is subjected to image recognition and positioning on a station before a welding process. In the embodiment of the invention, the coarse aluminum wire welding wire device is applied to a coarse aluminum wire welding wire machine, a workpiece can be a bracket and a wafer arranged on the bracket, the coarse aluminum wire welding wire machine can be used for conducting wire bonding on the bracket and the wafer arranged on the bracket, the coarse aluminum wire welding wire machine comprises a workbench 6, an upper blanking shifting hook, a lower blanking shifting hook, a material conveying track 7, a clamp 8, a welding head and other parts, the upper blanking shifting hook is used for shifting the bracket on the material conveying track 7 to the position of the clamp 8, the clamp 8 is used for compacting materials, and the welding mechanism 1, the image positioning mechanism and the material conveying track 7 are all arranged on the workbench 6.
As shown in fig. 3, the image positioning mechanism includes a moving mechanism 3 and a detecting mechanism 2, the detecting mechanism 2 is disposed on the moving mechanism 3, the moving mechanism 3 drives the detecting mechanism 2 to move, and the detecting mechanism 2 performs image recognition positioning on the workpiece. The detection mechanism 2 is arranged at the front end of the welding mechanism 1, when the workpiece is conveyed to the image recognition position, the detection mechanism 2 performs image recognition positioning on the workpiece, then the workpiece is conveyed to the welding position, the welding mechanism 1 welds the workpiece, and the image recognition positioning of the workpiece on the subsequent station can be performed while welding, so that the aim that the image positioning mechanism and the welding mechanism 1 work synchronously and independently is fulfilled.
The detection mechanism 2 comprises a lens mounting plate 41, a camera mounting seat 42, a CCD camera 43 and a light source 44, wherein the lens mounting plate 41 is arranged on the moving mechanism 3, the camera mounting seat 42 is arranged on the lens mounting plate 41, the CCD camera 43 is arranged on the camera mounting seat 42, and the light source 44 is arranged on the CCD camera 43.
The moving mechanism 3 is an XY-axis moving platform, the XY-axis moving platform comprises a bottom plate 31, an X-axis driving member 32 and a Y-axis driving member 33, the X-axis driving member 32 and the Y-axis driving member 33 are disposed on the bottom plate 31, the X-axis driving member 32 drives the detecting mechanism 2 to move along the X-axis direction, and the Y-axis driving member 33 drives the detecting mechanism 2 to move along the Y-axis direction.
The X-axis driving member 32 includes a first stepper motor 321, a first screw rod 322 and a first linkage block 323, the first linkage block 323 is disposed on a nut seat of the first screw rod 322, the Y-axis driving member 33 includes a second stepper motor 331, a second screw rod 332 and a second linkage block 333, and the second linkage block 333 is disposed on a nut seat of the second screw rod 332.
The XY axis moving stage further includes an X axis guide assembly 34 and a Y axis guide assembly 35.
The X-axis guiding assembly 34 includes a first X-axis linear guide 341, a first X-axis slider 342, a second X-axis linear guide 343, and a second X-axis slider 344, where the first X-axis linear guide 341 is disposed on the top surface of the bottom plate 31, the first X-axis slider 342 is disposed on the X-axis linear guide and connected to the bottom surface of the first linkage block 323, the second X-axis linear guide 343 is disposed on the bottom surface of the lens mounting plate 41, and the second X-axis slider 344 is disposed on the second X-axis linear guide 343 and connected to the top surface of the second linkage block 333.
The Y-axis guiding assembly 35 includes a first Y-axis linear guide 351, a first Y-axis slider 352, a second Y-axis linear guide 353, and a second Y-axis slider 354, where the first Y-axis linear guide 351 is disposed on the top surface of the bottom plate 31, the first Y-axis slider 352 is disposed on the Y-axis linear guide and connected to the bottom surface of the first linkage block 323, the second Y-axis linear guide 353 is disposed on the bottom surface of the lens mounting plate 41, and the second Y-axis slider 354 is disposed on the second Y-axis linear guide 353 and connected to the top surface of the second linkage block 333.
As shown in fig. 4, the welding mechanism 1 includes a Z-axis 11, a welding head 12, and a cutter 13, the welding head 12 and the cutter 13 are disposed on the Z-axis 11, and the cutter 13 is disposed on one side of the welding head 12. The bonding head 12 performs wire bonding to the holder and the wafer fixed to the holder, and the cutter 13 performs wire cutting after the bonding is completed. The image positioning mechanism and the welding mechanism 1 work independently, the image positioning mechanism can perform image recognition positioning on a workpiece firstly, then the welding head 12 welds the workpiece, and the image recognition positioning of the workpiece on a subsequent station can be performed while welding, so that the aim of synchronously and independently working the image positioning mechanism and the welding mechanism 1 is fulfilled.
According to the coarse aluminum wire welding line device provided by the embodiment of the invention, the image positioning mechanism of the coarse aluminum wire welding line machine is separated from the welding mechanism 1, so that the image positioning mechanism and the welding mechanism 1 work independently, the image positioning mechanism is arranged at the front end of the welding mechanism 1, when a workpiece is conveyed to the image recognition position of the image positioning mechanism, the image positioning mechanism can perform image recognition positioning on the workpiece first, when the workpiece is conveyed to the welding position, the welding mechanism 1 welds the workpiece again, and the image recognition positioning of the workpiece on a subsequent station can be performed while welding, so that the purpose that the image positioning mechanism and the welding mechanism 1 work synchronously and independently is achieved; the image positioning mechanism and the welding mechanism 1 work independently in parallel, so that the production efficiency of the crude aluminum wire welding machine is greatly improved, the load of the whole welding head is reduced, the running stability of equipment is improved, and the capacity requirement of semiconductor component expansion on packaging equipment can be met.
In order to solve the technical problems set forth above, the embodiment of the invention also provides a method for debugging the coarse aluminum wire welding line device, which adopts the following technical scheme:
a method for debugging a coarse aluminum wire welding line device comprises the following steps:
image level and scale correction;
Coarse adjustment of image offset;
and (5) correcting image offset.
The step of image level and scale correction comprises:
shifting materials to an image recognition position, and setting a correction distance S1 on an upper mechanism image recognition template Model 1;
lens left shift S1/2, template recognition Model1, obtain image coordinates (PX 1, PY 1);
The lens moves to the right S1, the template identifies the Model1, and image coordinates (PX 2, PY 2) are obtained;
Calculating the absolute value of coordinates of two image identifications:
ΔPX1＝|PX1－PX2|，ΔPY1＝|PY1－PY2|；
By adjusting the camera angle, the resulting Δpy1 is made 0, i.e., the horizontal correction is completed, wherein when Δpy1=0, the image ratio is: pr=s1/Δpx1.
The step of coarse adjustment of the image offset comprises the following steps:
Shifting to a welding position, and welding a welding spot at the current position, wherein the welding spot coordinates of a welding head are (BX 1, BY 1);
The material is shifted back to the image recognition position, the image is aligned to the center position of the welding spot, and lens coordinates (JX 1, JY 1) are recorded;
Acquiring an image offset:
ΔPX2’＝BX1－JX1
ΔPY2’＝BY1－JY1。
the image offset correction step includes:
The dial is to the image recognition position to carry on the image recognition positioning, record the image positioning point data (PX 3, PY 3), the lens coordinate (JX 2, JY 2), then the image coordinate is:
(PX3＊PR+JX2，PY3＊PR+JY2)；
the method comprises the steps of stirring to a welding position, welding a welding spot, and welding coordinates of a welding head are as follows:
BX2＝PX3＊PR+JX2+ΔPX2’
BY2＝PY3＊PR+JY2+ΔPY2’；
And (3) pulling the material back to the image recognition position to check the condition of the welding spot, moving the lens to the position right above the center of the welding spot, and recording the coordinates (JX 3 and JY 3) of the lens, wherein the image offset is as follows:
ΔPX2＝JX3－(PX3＊PR+JX2)
ΔPY2＝JY3－(PY3＊PR+JY2)；
Determining a final image offset (Δpx, Δpy) based on a comparison of the image recognition position and the actual welding position:
ΔPX＝ΔPX2’+ΔPX2
ΔPY＝ΔPY2’+ΔPY2。
In order to solve the technical problems set forth above, the embodiment of the invention also provides a coarse aluminum wire welding device, which adopts the following technical scheme:
the utility model provides a thick aluminum wire welding line equipment, includes organism 5, workstation 6, material track 7 and as above thick aluminum wire welding line device, workstation 6 is located on the organism 5, welding mechanism 1 locates on the organism 5, image positioning mechanism and material track 7 locate on the workstation 6, be equipped with anchor clamps 8 on the workstation 6.
According to the coarse aluminum wire welding line equipment provided by the embodiment of the invention, the image positioning mechanism of the coarse aluminum wire welding line machine is separated from the welding mechanism 1, so that the image positioning mechanism and the welding mechanism 1 work independently, the image positioning mechanism is arranged at the front end of the welding mechanism 1, when a workpiece is conveyed to the image recognition position of the image positioning mechanism, the image positioning mechanism can perform image recognition positioning on the workpiece first, when the workpiece is conveyed to the welding position, the welding mechanism 1 welds the workpiece again, and the image recognition positioning of the workpiece on a subsequent station can be performed while welding, so that the purpose that the image positioning mechanism and the welding mechanism 1 work synchronously and independently is achieved; the image positioning mechanism and the welding mechanism 1 work independently in parallel, so that the production efficiency of the crude aluminum wire welding machine is greatly improved, the load of the whole welding head is reduced, the running stability of equipment is improved, and the capacity requirement of semiconductor component expansion on packaging equipment can be met.
It is apparent that the above-described embodiments are only some embodiments of the present invention, but not all embodiments, and the preferred embodiments of the present invention are shown in the drawings, which do not limit the scope of the patent claims. This invention may be embodied in many different forms, but rather, embodiments are provided in order to provide a thorough and complete understanding of the present disclosure. Although the invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing description, or equivalents may be substituted for elements thereof. All equivalent structures made by the content of the specification and the drawings of the invention are directly or indirectly applied to other related technical fields, and are also within the scope of the invention.

Claims (8)

1. The debugging method of the crude aluminum wire welding line device is characterized in that the crude aluminum wire welding line device comprises a welding mechanism and a welding mechanism, wherein the welding mechanism is used for welding workpieces at welding positions;
the image positioning mechanism is arranged at one side of the welding mechanism and is positioned at the front end of the welding mechanism along the feeding direction of the feeding track;
The image positioning mechanism comprises a moving mechanism and a detecting mechanism, the detecting mechanism is arranged on the moving mechanism, the moving mechanism drives the detecting mechanism to move, and the detecting mechanism is used for carrying out image recognition positioning on a workpiece at an image recognition position; the detection mechanism comprises a CCD camera and a light source, and the light source is arranged on the CCD camera
The method comprises the following steps:
image level and scale correction;
Coarse adjustment of image offset;
correcting image offset;
The step of image level and scale correction comprises:
shifting materials to an image recognition position, and setting a correction distance S1 on an upper mechanism image recognition template Model 1;
lens left shift S1/2, template recognition Model1, obtain image coordinates (PX 1, PY 1);
The lens moves to the right S1, the template identifies the Model1, and image coordinates (PX 2, PY 2) are obtained;
Calculating the absolute value of coordinates of two image identifications:
ΔPX1＝|PX1－PX2|，ΔPY1＝|PY1－PY2|；
By adjusting the camera angle, the resulting Δpy1 is made 0, i.e., the horizontal correction is completed, wherein when Δpy1=0, the image ratio is: pr=s1/Δpx1;
the step of coarse adjustment of the image offset comprises the following steps:
Shifting to a welding position, and welding a welding spot at the current position, wherein the welding spot coordinates of a welding head are (BX 1, BY 1);
The material is shifted back to the image recognition position, the image is aligned to the center position of the welding spot, and lens coordinates (JX 1, JY 1) are recorded;
Acquiring an image offset:
ΔPX2’＝BX1－JX1
ΔPY2’＝BY1－JY1；
the image offset correction step includes:
The dial is to the image recognition position to carry on the image recognition positioning, record the image positioning point data (PX 3, PY 3), the lens coordinate (JX 2, JY 2), then the image coordinate is:
(PX3＊PR+JX2，PY3＊PR+JY2)；
the method comprises the steps of stirring to a welding position, welding a welding spot, and welding coordinates of a welding head are as follows:
BX2＝PX3＊PR+JX2+ΔPX2’
BY2＝PY3＊PR+JY2+ΔPY2’；
And (3) pulling the material back to the image recognition position to check the condition of the welding spot, moving the lens to the position right above the center of the welding spot, and recording the coordinates (JX 3 and JY 3) of the lens, wherein the image offset is as follows:
ΔPX2＝JX3－(PX3＊PR+JX2)
ΔPY2＝JY3－(PY3＊PR+JY2)；
Determining a final image offset (Δpx, Δpy) based on a comparison of the image recognition position and the actual welding position:
ΔPX＝ΔPX2’+ΔPX2
ΔPY＝ΔPY2’+ΔPY2。
2. the method for debugging a wire bonding apparatus for thick aluminum wires according to claim 1, wherein,
The detection mechanism further comprises a lens mounting plate and a camera mounting seat, wherein the lens mounting plate is arranged on the moving mechanism, the camera mounting seat is arranged on the lens mounting plate, and the CCD camera is arranged on the camera mounting seat.
3. The method for debugging a wire bonding apparatus for thick aluminum wires according to claim 2, wherein,
The moving mechanism is an XY-axis moving platform, the XY-axis moving platform comprises a bottom plate, an X-axis driving piece and a Y-axis driving piece, the X-axis driving piece and the Y-axis driving piece are arranged on the bottom plate, the X-axis driving piece drives the detecting mechanism to move along the X-axis direction, and the Y-axis driving piece drives the detecting mechanism to move along the Y-axis direction.
4. The method for debugging a wire bonding apparatus for thick aluminum wires according to claim 3,
The X-axis driving piece comprises a first stepping motor, a first screw rod and a first linkage block, the first linkage block is arranged on a nut seat of the first screw rod, the Y-axis driving piece comprises a second stepping motor, a second screw rod and a second linkage block, and the second linkage block is arranged on a nut seat of the second screw rod.
5. The method for debugging a thick-aluminum wire bonding apparatus according to claim 4, wherein,
The XY-axis moving platform further comprises an X-axis guiding assembly and a Y-axis guiding assembly;
The X-axis guide assembly comprises a first X-axis linear guide rail, a first X-axis sliding block, a second X-axis linear guide rail and a second X-axis sliding block, wherein the first X-axis linear guide rail is arranged on the top surface of the bottom plate, the first X-axis sliding block is arranged on the X-axis linear guide rail and is connected with the bottom surface of the first linkage block, the second X-axis linear guide rail is arranged on the bottom surface of the lens mounting plate, and the second X-axis sliding block is arranged on the second X-axis linear guide rail and is connected with the top surface of the second linkage block.
6. The method for debugging a thick-aluminum wire bonding apparatus according to claim 5, wherein,
The Y-axis guide assembly comprises a first Y-axis linear guide rail, a first Y-axis sliding block, a second Y-axis linear guide rail and a second Y-axis sliding block, wherein the first Y-axis linear guide rail is arranged on the top surface of the bottom plate, the first Y-axis sliding block is arranged on the Y-axis linear guide rail and is connected with the bottom surface of the first linkage block, the second Y-axis linear guide rail is arranged on the bottom surface of the lens mounting plate, and the second Y-axis sliding block is arranged on the second Y-axis linear guide rail and is connected with the top surface of the second linkage block.
7. The method for debugging a wire bonding apparatus for thick aluminum wires according to claim 1, wherein,
The welding mechanism comprises a Z axis, a welding head and a cutter, wherein the welding head and the cutter are arranged on the Z axis, and the cutter is arranged on one side of the welding head.
8. A thick aluminum wire welding device is characterized in that,
The device comprises a machine body, a workbench, a material conveying track and the crude aluminum wire welding line device debugged by the crude aluminum wire welding line device debugging method according to any one of claims 1-7, wherein the workbench is arranged on the machine body, the welding mechanism is arranged on the machine body, and the image positioning mechanism and the material conveying track are arranged on the workbench.
CN202110241740.4A 2021-03-04 2021-03-04 Coarse aluminum wire welding device, debugging method and coarse aluminum wire welding device equipment Active CN115008089B (en)

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