CN115555752A - Method for improving chromatic aberration of broken wire and bonding wire - Google Patents
Method for improving chromatic aberration of broken wire and bonding wire Download PDFInfo
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- CN115555752A CN115555752A CN202211245705.0A CN202211245705A CN115555752A CN 115555752 A CN115555752 A CN 115555752A CN 202211245705 A CN202211245705 A CN 202211245705A CN 115555752 A CN115555752 A CN 115555752A
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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
- 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
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Abstract
The invention discloses a method for improving the chromatic aberration of broken wires and bonding wires, which comprises the following steps: (1) manually cutting off and straightening thread ends on two sides of a thread breakage position; (2) The electric welding machine is tightly attached to the position of the left side door or the right side door of the slicing machine, and welding spots are welded; (3) The appearance of the welding spot is smooth without bulges and depressions, and the welding spot is subjected to a breaking test; (4) Manually pulling the steel wire to form tension difference with the steel wire of the wire net through the rotation of the guide wheel, and taking the welded wire into the guide wheel to form a complete wire net, and then starting to take up the wire in two directions; (5) modifying the normal cutting process of the starting of the slicing machine; (6) calculating the passing length of the welding spot and recording the numerical value; (7) Starting a slicing machine, after the linear speed is increased from 8% to 100% through an acceleration button in 15-20S, confirming whether a welding wire runs onto the wire wheel or not through the counting length of a panel, and immediately switching to normal process cutting after a welding spot arrives; the invention reduces the color difference of the bonding wires, improves the wire running speed and shortens the time of welding point running.
Description
Technical Field
The invention relates to the technical field of photovoltaic cutting, in particular to a method for improving the chromatic aberration of broken wires and bonding wires.
Background
With the development of a multi-wire cutting mode technology of a photovoltaic silicon wafer, the wire diameter of multi-wire cutting is gradually thinned, the wire is made into a diamond wire shape, the price of a silicon material is continuously increased, the wire breakage accident inevitably occurs in the processing process of a slicing machine, the wire breakage accident can greatly increase the rejection rate of silicon wafer cutting, the production cost is increased, therefore, the wire breakage accident occurring in the processing process of the silicon wafer can be generally rescued to reduce the loss, and the wire breakage loss and the color difference caused by welding wires are particularly important for the rescue of finished products.
The conventional rescue method is generally wire welding treatment, wherein after welding points are welded, the welding points are sensed by hand to perform one-way wire take-up, then the welding points are moved through a wire net at the speed of 5m/s under the static state of a workbench, and then the machine is started. Under the existing treatment technology, the welding spot is easy to break due to the influence of materials and wire diameters, so that the welding spot is walked at low linear speed during treatment and then started, the color difference is caused by long-term friction under the same depth of the silicon rod, the rescue effect is not ideal, and the treatment time is too long, so that the production is not facilitated.
Disclosure of Invention
The purpose of the invention is as follows: the present invention aims to provide a method for improving the color difference of broken bonding wires, which solves the problems in the prior art.
The technical scheme is as follows: the invention provides a method for improving the chromatic aberration of broken wires and bonding wires, which comprises the following steps:
(1) Manually cutting off and straightening thread ends on two sides of the thread breakage position;
(2) The electric welding machine is tightly attached to the left side door or the right side door of the slicing machine, so that the welding position and the broken line position are in a horizontal state, and welding spots are welded;
(3) After welding of the welding spot is finished, the welding spot is smooth in appearance and free of bulges and depressions, 500G of weight is hung on the steel wire, the welding spot is located at 1/2 of the steel wire, the welding spot is manually lifted in a V shape and shaken up and down to perform a breaking test, and whether the welding spot is broken or not is judged;
(4) Manually pulling the steel wire to form tension difference with the steel wire of the wire net through the rotation of the guide wheel, taking the welded wire into the guide wheel to form a complete wire net, starting to adopt bidirectional wire take-up, namely, the wire take-up direction is opposite to the direction of the welding point, and switching the direction consistent with the welding point after 20-30m of wire take-up until the wire take-up is finished; the take-up distance is controlled within 250m-300 m;
(5) Modifying the normal cutting process of the starting of the slicing machine;
(6) Calculating the passing length of the welding spot and recording the numerical value;
(7) And starting the slicing machine, increasing the linear speed from 8% to 100% through an acceleration button in 15-20S, confirming whether the welding wire runs onto the wire wheel or not through the counting length of the panel, and immediately switching to normal process cutting after the welding point arrives.
Furthermore, the wire take-up distance in the step (4) is controlled by the hand-pulling force, the tensioning wire take-up distance is long, the loosening wire take-up distance is short, and the force is adjusted at any time on site according to the wire take-up distance.
Further, the step (5) comprises the following steps:
(51) The speed of the slicing machine and the linear speed are kept unchanged in the normal process;
(52) One return line is controlled to be 200m, the incoming line is set as standard according to the current process, and the return line setting = the incoming line quantity-200;
(53) If the welding spot is in the wire inlet direction, the wire inlet tension is set to be 1; if the welding point is in the loop direction, the loop tension is set to 1.
Further, the length of the run wire in the step (6) = the length of the wire mesh x7.7m.
Further, the maximum value of the counting length of the panel in the step (7) is the running line length in the step (6).
Further, the stage speed in the step (51) is a lowering speed of the stage, and the linear speed is a running speed of the steel wire.
Has the advantages that: compared with the prior art, the invention has the following remarkable advantages: breaking the traditional method flow, making the welding point standard and adopting a welding point protecting method to enable the welding point to be close to the cutting environment so as to reduce the chromatic aberration, wherein the width of the chromatic aberration band is reduced to be less than 1mm from 8mm to 12mm, and the chromatic aberration of the welding line is reduced to 1.2% from 6.5%; the linear speed is improved by 7.6 times, and the time for welding point running is shortened by 10-15 min.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic diagram of a solder joint location structure according to the present invention.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
As shown in fig. 1-2, the present invention provides a method for improving color difference of broken wire and bonding wire, comprising the following steps:
(1) Manually cutting off and straightening thread ends on two sides of the thread breakage position;
(2) The electric welding machine is tightly attached to the left side door or the right side door of the slicing machine, so that the welding position and the broken line position are in a horizontal state, and welding spots are welded;
(3) After welding of the welding spot is finished, the welding spot is smooth in appearance and free of bulges and depressions, 500G of weight is hung on the steel wire, the welding spot is located at 1/2 of the steel wire, the welding spot is manually lifted in a V shape and shaken up and down to perform a breaking test, and whether the welding spot is broken or not is judged;
(4) Manually pulling the steel wire to form tension difference with the steel wire of the wire net through the rotation of the guide wheel, taking the welded wire into the guide wheel to form a complete wire net, starting to adopt bidirectional wire take-up, namely, the wire take-up direction is opposite to the direction of the welding point, and switching the direction consistent with the welding point after 20-30m of wire take-up until the wire take-up is finished; the take-up distance is controlled within 250m-300 m; the wire take-up distance is controlled by the hand-pulling force, the tightening wire take-up distance is long, the loosening wire take-up distance is short, and the force is adjusted at any time on site according to the wire take-up distance.
(5) The normal cutting process of the modified slicing machine during starting comprises the following steps:
(51) Keeping the table speed and the linear speed of the slicing machine unchanged in a normal process, wherein the table speed is the descending speed of the workbench, and the linear speed is the running speed of a steel wire;
(52) Controlling one incoming and returning consumption line at 200m, wherein the incoming line is set as standard according to the current process, and the returning line setting = the incoming line quantity-200;
(53) If the welding spot is in the wire inlet direction, the wire inlet tension is set to be 1; if the welding point is in the return wire direction, the tension of the return wire is set to be 1;
(6) Calculating the passing length of the welding spot and recording the numerical value, wherein the length of the running wire = the length x7.7m of the wire network;
(7) Starting a slicing machine, after the linear speed is increased from 8% to 100% through an acceleration button in 15-20S, confirming whether a welding wire runs onto the wire wheel or not through the counting length of a panel, and immediately switching to normal process cutting after a welding spot arrives; the maximum value of the counting length of the panel is the running line length of the step (6).
Claims (6)
1. A method for improving the chromatic aberration of broken wires and bonding wires is characterized by comprising the following steps:
(1) Manually cutting off and straightening thread ends on two sides of the thread breakage position;
(2) Tightly attaching the electric welding machine to the left side door or the right side door of the slicing machine to enable the welding position and the broken line position to be in a horizontal state, and welding a welding spot;
(3) After welding of the welding points is finished, the welding points are smooth in appearance and free of bulges and depressions, 500G weights are hung on the steel wire, the welding points are located at 1/2 of the steel wire, the welding points are manually lifted in a V shape and shaken up and down to perform a breaking test, and whether the welding points are broken or not is judged;
(4) Manually pulling the steel wire to form tension difference with the steel wire of the wire net through the rotation of the guide wheel, taking the welded wire into the guide wheel to form a complete wire net, starting to adopt bidirectional wire take-up, namely, the wire take-up direction is opposite to the direction of the welding point, and switching the direction consistent with the welding point after 20-30m of wire take-up until the wire take-up is finished; the take-up distance is controlled within 250m-300 m;
(5) Modifying the normal cutting process of the starting of the slicing machine;
(6) Calculating the passing length of the welding spot and recording the numerical value;
(7) And starting the slicing machine, increasing the linear speed from 8% to 100% through an acceleration button in 15-20S, confirming whether the welding wire runs onto the wire wheel or not through the counting length of the panel, and immediately switching to normal process cutting after the welding point arrives.
2. The method for improving the color difference of the broken wire and the welded wire according to claim 1, wherein the tension difference in the step (4) is a difference between a tension value formed by manually pulling a steel wire and a tension value set by a guide wheel wire mesh; receive the line distance and be the dynamics control through the hand power, take up the line distance length in taut, receive the line distance weak point in the loose drawing, the on-the-spot dynamics of adjusting at any time according to having received the line distance.
3. The method for improving the color difference of the broken bonding wire according to claim 1, wherein the step (5) comprises the following steps:
(51) The speed of the slicing machine and the linear speed are kept unchanged in the normal process;
(52) One return line is controlled to be 200m, the incoming line is set as standard according to the current process, and the return line setting = the incoming line quantity-200;
(53) If the welding point is in the wire inlet direction, the wire inlet tension is set to be 1; if the welding point is in the loop direction, the loop tension is set to 1.
4. The method for improving the color difference of the broken wire and the welded wire as claimed in claim 1, wherein the step (6) is performed with a wire length = wire mesh length x7.7m.
5. The method for improving color difference of broken wire and weld line according to claim 1, wherein the maximum value of the counting length of the panel in the step (7) is the running length of the panel in the step (6).
6. The method of improving color difference of broken wire according to claim 3, wherein said step (51) is that the table speed is a lowering speed of the table, and the linear speed is a running speed of the steel wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211245705.0A CN115555752A (en) | 2022-10-12 | 2022-10-12 | Method for improving chromatic aberration of broken wire and bonding wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211245705.0A CN115555752A (en) | 2022-10-12 | 2022-10-12 | Method for improving chromatic aberration of broken wire and bonding wire |
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| Publication Number | Publication Date |
|---|---|
| CN115555752A true CN115555752A (en) | 2023-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211245705.0A Pending CN115555752A (en) | 2022-10-12 | 2022-10-12 | Method for improving chromatic aberration of broken wire and bonding wire |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116922594A (en) * | 2023-07-18 | 2023-10-24 | 江苏双晶新能源科技有限公司 | Cutting method for reducing chromatic aberration caused by bonding wires after breakage of crystalline silicon slice |
-
2022
- 2022-10-12 CN CN202211245705.0A patent/CN115555752A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116922594A (en) * | 2023-07-18 | 2023-10-24 | 江苏双晶新能源科技有限公司 | Cutting method for reducing chromatic aberration caused by bonding wires after breakage of crystalline silicon slice |
| CN116922594B (en) * | 2023-07-18 | 2024-04-02 | 江苏双晶新能源科技有限公司 | Cutting method for reducing chromatic aberration caused by bonding wires after breakage of crystalline silicon slice |
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