CN111360357A - Welding device and method for thermoelectric refrigerator with double-sided gold-tin solder - Google Patents
Welding device and method for thermoelectric refrigerator with double-sided gold-tin solder Download PDFInfo
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- CN111360357A CN111360357A CN202010308934.7A CN202010308934A CN111360357A CN 111360357 A CN111360357 A CN 111360357A CN 202010308934 A CN202010308934 A CN 202010308934A CN 111360357 A CN111360357 A CN 111360357A
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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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
-
- 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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
- B23K3/085—Cooling, heat sink or heat shielding means
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Abstract
The invention belongs to the field of optics, and particularly relates to a welding device and a welding method for a thermoelectric refrigerator with double-sided gold-tin solder. The welding device comprises a cover plate, a support, a pressing plate, a fixing block, a transfer block, a shell, a heating table, a torque spring, a pressure slide block and a pressure block; during welding, the thermoelectric refrigerator with the double-sided gold-tin solder is placed in a laser tube shell, and an electric plate is placed on the thermoelectric refrigerator; through the fixed position of fixed block, pin the clamp plate, pressure block pressure is given through compression torque spring to the pressure slider to realize that the pressure block compresses tightly the electroplax, guarantee thermoelectric cooler and electroplax and laser instrument tube's the complete contact, rotatory two apron to closed make the whole welding space in the casing airtight, then the heating welding can. The invention can improve the reliability of the whole product, has controllable process and quality and improves the production efficiency. The soldering method is simple, and the soldering process of the gold-tin solder TEC is easy to realize.
Description
Technical Field
The invention belongs to the field of optics, and particularly relates to a welding device and a welding method for a thermoelectric refrigerator with double-sided gold-tin solder.
Background
The laser with the thermoelectric cooler (TEC) temperature control function has inherent advantages in industrial applications, the main technology lies in temperature control of products, and the traditional TEC adopts a silver adhesive bonding process during use, so that the process is simple, but the heat conduction efficiency and reliability are far lower than those of gold-tin solder. The performance of the TEC with the gold-tin solder is superior to that of the common TEC, but the welding method is complex and the process realization process is difficult.
Disclosure of Invention
In order to solve the problems, the invention provides a welding device and a welding method for a thermoelectric refrigerator with double-sided gold-tin solder.
The technical scheme of the invention is as follows:
a welding device of a thermoelectric refrigerator with double-sided gold-tin solder comprises a cover plate 1, a bracket 2, a pressure plate 3, a fixed block 4, a transfer block 5, a shell 7, a heating platform 8, a moment spring 10, a pressure slide block 11 and a pressure block 12;
the shell 7 is of a groove structure and is arranged on the heating table 8; four air grooves 15 are symmetrically arranged on the lower surface of the bottom of the shell 7 and surround a square structure, the four air grooves 15 are communicated through a symmetrical cross groove body, and the cross groove body is positioned in the middle of the square structure surrounded by the four air grooves 15; a plurality of air inlets 16 are symmetrically arranged on the upper surface of the bottom of the shell 7, and the air inlets 16 are communicated with the air groove 15; a plurality of adjusting holes are formed in one side surface of the shell 7, and the adjusting holes are vertically arranged and used for installing the fixing block 4;
the heating table 8 is internally provided with an L-shaped air inlet channel 9; one end of the air inlet flow channel 9 is communicated with the outside, and the other end is communicated with the center of the cross-shaped groove body, so that air inlet is realized;
the bracket 2 is fixedly arranged at the center of the upper surface of one edge of the shell 7; one end of the pressing plate 3 is mounted on the bracket 2 through a rotating shaft 6, and the other end of the pressing plate 3 is mounted on the fixed block 4 through the rotating shaft 6, so that the pressing plate 3 can rotate and open; the fixing block 4 is provided with a U-shaped notch, the fixing block is fixed on the side surface of the shell 7 through the matching of the fixing bolt, the U-shaped notch and the adjusting holes on the side surface of the shell 7, and the height adjustment of the pressing plate 3 is realized through adjusting the positions of the fixing bolt on different adjusting holes; a through hole is formed in the center of the pressing plate 3, the switching block 5 is arranged in the central through hole, and the top end of the switching block 5 is fixed on the pressing plate 3 through a rotating shaft 6;
the two cover plates 1 are symmetrically arranged on one edge of the shell 7 through the rotating shaft 6 and are positioned on two sides of the bracket 2, so that the cover plates 1 cover the shell 7, and the two cover plates 1 can respectively rotate left and right to be opened or closed; the center of the cover plate 1 is provided with a through hole which corresponds to the central through hole of the pressing plate 3 and is used for placing the transfer block 5;
the switching block 5 is of an open groove structure, the opening is downward, and the lower end of the switching block 5 is positioned in the shell 7; the moment spring 10 is arranged in a groove body of the switching block 5, the top end of the moment spring is connected with the top of the switching block 5, and the bottom end of the moment spring is connected with the pressure slide block 11; the upper part of the pressure block 12 is provided with a groove, the lower part of the pressure slide block 11 is inserted into the groove, and the upper part of the pressure slide block 11 is positioned in the transfer block 5.
The welding method of the thermoelectric refrigerator with the double-sided gold-tin solder adopts the device and comprises the following steps:
the method comprises the following steps: firstly, preheating a heating table 8, starting a temperature control instrument of the heating table 8, and preheating to 90-110 ℃; then putting the laser tube shell into the center position in the shell 7, putting the thermoelectric refrigerator 14 with double-sided gold-tin solder into the laser tube shell, and putting the electric plate 13 on the thermoelectric refrigerator 14; the pressing plate 3 is rotated to the horizontal position, the fixing block 4 is rotated and fixed on the side face of the shell 7 through the fixing bolt, the pressing plate 3 is locked, the pressure sliding block 11 gives pressure to the pressure block 12 through the compression torque spring 10, so that the pressure block 12 is pressed downwards, the pressure block 12 compresses the electric plate 13, complete contact between the thermoelectric refrigerator 14 and the electric plate 13 and between the thermoelectric refrigerator and a laser tube shell is guaranteed, then the two cover plates 1 are rotated to be closed, and the whole welding space in the shell 7 is closed.
Step two: and opening a nitrogen device outside the device, enabling nitrogen to enter the shell 7 through the air inlet flow channel 9, the air groove 15 and the air inlet 16, enabling the nitrogen blown out from the bottom to fill the whole welding space, and continuously filling nitrogen.
Step three: and continuously heating the heating platform 8 to 130-140 ℃, and continuously heating for 10-20s to completely melt the gold-tin solder on the upper surface and the lower surface of the thermoelectric refrigerator 14, wherein the lower surface of the thermoelectric refrigerator 14 is welded on the laser tube shell, and the upper surface of the thermoelectric refrigerator is welded on the electric plate 13.
Step four: the heating table 8 stops heating, the flow of the nitrogen is increased, the whole device is cooled to the room temperature, the gold-tin solder is cooled and completely solidified, and the welding process is completed; and opening the cover plate 1, the fixing block 4 and the pressing plate 3 in sequence, and then taking out the laser tube shell.
The invention has the beneficial effects that: the invention can improve the reliability of the whole product, and compared with the traditional welding mode, the process is controllable, and the quality is controllable; and can improve the efficiency of production, it is more stable for traditional manual welding. The soldering method is simple, and the soldering process of the gold-tin solder TEC is easy to realize.
Drawings
FIG. 1 is a top view of the apparatus of the present invention;
FIG. 2 is a front view of the apparatus of the present invention;
FIG. 3 is a cross-sectional view of the apparatus of the present invention;
FIG. 4 is an enlarged view of a portion of the interior of the housing of the apparatus of the present invention;
FIG. 5 is an enlarged view of a portion of a thermoelectric cooler within the apparatus of the present invention;
FIG. 6 is a schematic view of the gas flow direction in the gas inlet channel of the heating station;
FIG. 7 is a schematic view of the overall structure of the apparatus of the present invention;
FIG. 8 is a schematic view of the inside of the apparatus during welding;
FIG. 9 is a schematic view of an intake runner.
In the figure: 1, covering a plate; 2, a bracket; 3, pressing a plate; 4, fixing blocks; 5, switching a block; 6 a rotating shaft; 7, a shell; 8, heating a table; 9 an air inlet flow channel; 10 moment springs; 11 a pressure slide; 12 a pressure block; 13 an electric plate; 14 a thermoelectric refrigerator; 15 air grooves and 16 air inlets.
Detailed Description
The invention is further illustrated by the following figures and examples.
As shown in fig. 1 to 5, 7 and 8, the soldering apparatus for a thermoelectric refrigerator with gold-tin solder on both sides according to the present invention comprises a cover plate 1, a bracket 2, a pressure plate 3, a fixing block 4, a transfer block 5, a rotating shaft 6, a housing 7, a heating stage 8, a moment spring 10, a pressure slider 11 and a pressure block 12.
As shown in fig. 1, 2 and 6, the housing 7 is a groove structure and is disposed on the heating stage 8; four gas grooves 15 are symmetrically arranged on the lower surface of the bottom of the shell 7, when the thermoelectric refrigerator 14 is welded, the laser tube shell is arranged in the center of the shell 7, the four gas grooves 15 are symmetrically distributed around the laser tube shell, the four gas grooves 15 are communicated through a symmetrical cross-shaped groove body, and the cross-shaped groove body is positioned in the middle of the four gas grooves 15; a plurality of air inlets 16 are symmetrically arranged on the upper surface of the bottom of the shell 7, and the air inlets 16 are communicated with the air grooves 15, so that air can uniformly enter the shell 7 from the periphery of the laser tube shell; a plurality of adjusting holes are formed in one side face of the shell 7, are vertically arranged and are located on the central line of the side face of the shell 7 and used for installing the fixing block 4.
As shown in fig. 3, 6 and 9, a heating stage 8 is provided with an L-shaped intake runner 9 inside; one end of the air inlet flow channel 9 is communicated with the outside, and the other end is communicated with the center of the cross-shaped groove body, so that air inlet is realized.
As shown in fig. 1 and 2, the bracket 2 is fixedly installed at a central position of an upper surface of one edge of the housing 7; one end of the pressing plate 3 is installed on the support 2 through the rotating shaft 6, the other end of the pressing plate is installed on the fixing block 4 through the rotating shaft 6, the pressing plate 3 can rotate around the support 2, and the fixing block 4 can rotate around the pressing plate 3 to realize the opening of the pressing plate 3; the fixing block 4 is provided with a U-shaped notch, the fixing block is fixed on the side surface of the shell 7 through the matching of the fixing bolt, the U-shaped notch and the adjusting holes on the side surface of the shell 7, and the height adjustment of the pressing plate 3 is realized through adjusting the positions of the fixing bolt on different adjusting holes; the center of clamp plate 3 is equipped with the through-hole, switching piece 5 is arranged in the central through-hole, and the top of switching piece 5 passes through rotation axis 6 to be fixed on clamp plate 3.
As shown in fig. 1 and 2, two cover plates 1 are symmetrically installed on one edge of a housing 7 through a rotating shaft 6 and symmetrically located on two sides of a bracket 2, so that the cover plates 1 cover the housing 7, and the two cover plates 1 can respectively rotate left and right to open or close; the center of the cover plate 1 is provided with a through hole which corresponds to the central through hole of the pressing plate 3 and is used for placing the transfer block 5; the bracket 2, the fixing block 4 and the central through hole of the cover plate 1 are positioned on the same straight line.
As shown in fig. 1-3, the adapter block 5 is of an open groove structure, the opening is downward, and the lower end of the adapter block 5 is located in the housing 7; the moment spring 10 is arranged in the groove body of the switching block 5, and two ends of the moment spring are respectively connected with the top of the switching block 5 and the pressure slide block 11; the upper part of the pressure block 12 is provided with a groove, the lower part of the pressure slide block 11 is inserted into the groove, and the upper part of the pressure slide block 11 is positioned in the transfer block 5.
When a thermoelectric refrigerator 14 with double-sided gold-tin solder is welded, a laser tube shell is arranged in the shell 7, the thermoelectric refrigerator 14 is arranged in the laser tube shell, and the electric plate 13 is arranged on the upper surface of the thermoelectric refrigerator 14; through the cooperation of clamp plate 3, fixed block 4, adapter block 5, moment spring 10 and pressure slider 11 together, make pressure block 12 push down and contact with electroplax 13, realize compressing tightly, can adjust the packing force through the position of adjusting fixed block 4 in casing 7 side simultaneously to realize the better welding of gold tin solder.
For the welding of the thermoelectric cooler 14 of the present embodiment, the specific welding process includes the following steps:
the method comprises the following steps: firstly, preheating a heating table 8, starting a temperature control instrument of the heating table 8, and preheating the temperature to 100 ℃; then the laser tube shell is placed in the center of a shell 7 of the device, a thermoelectric refrigerator 14 with double-sided gold-tin solder is placed in the laser tube shell, an electric plate 13 is placed on the thermoelectric refrigerator 14, a pressing plate 3 is placed, a pressure block 12 is pressed on the electric plate 13, a fixing block 4 is rotated, the pressing plate 3 is locked, a pressure block 12 is provided with 10N pressure by a pressure slide block 11 through a compression torque spring 10, the thermoelectric refrigerator 14 is ensured to be completely contacted with the electric plate 13 and the tube shell, the pressure is ensured, and then a cover plate 1 is rotated to be closed, so that the whole welding space is sealed.
Step two: the switch of the nitrogen device outside the device is turned on, so that nitrogen enters the shell 7, high-temperature nitrogen is blown out from the bottom to fill the whole welding space, and the nitrogen is continuously filled. The nitrogen is used for protecting the gold-tin solder of the TEC, preventing the gold-tin solder of the TEC from being oxidized, and simultaneously preheating the whole welding space to reach the preheating temperature, so that the heating curve is smooth and does not overshoot.
Step three: and (3) continuously heating the heating table 8 to 130 ℃, completely melting the gold-tin solder on the upper surface and the lower surface of the thermoelectric refrigerator 14 after 10s, welding the lower surface of the thermoelectric refrigerator 14 on the laser tube shell, and welding the upper surface of the thermoelectric refrigerator on the electric plate 13.
Step four: and stopping heating the heating table 8, increasing the flow of the nitrogen to cool the whole device to room temperature, cooling the gold-tin solder, and completely solidifying to finish the welding process.
Claims (2)
1. The welding device of the thermoelectric refrigerator with the double-sided gold-tin solder is characterized by comprising a cover plate (1), a support (2), a pressing plate (3), a fixing block (4), a switching block (5), a shell (7), a heating table (8), a moment spring (10), a pressure sliding block (11) and a pressure block (12);
the shell (7) is of a groove structure and is arranged on the heating table (8); four air grooves (15) are symmetrically arranged on the lower surface of the bottom of the shell (7) and form a square structure in a surrounding mode, the four air grooves (15) are communicated through a symmetrical cross groove body, and the cross groove body is located in the middle of the square structure formed by the four air grooves (15) in a surrounding mode; a plurality of air inlets (16) are symmetrically arranged on the upper surface of the bottom of the shell (7), and the air inlets (16) are communicated with the air groove (15); a plurality of adjusting holes are formed in one side surface of the shell (7), and the adjusting holes are vertically arranged and used for installing the fixing block (4);
the heating table (8) is internally provided with an L-shaped air inlet channel (9); one end of the air inlet flow channel (9) is communicated with the outside, and the other end of the air inlet flow channel is communicated with the center of the cross-shaped groove body, so that air inlet is realized;
the bracket (2) is fixedly arranged at the center of the upper surface of one edge of the shell (7); one end of the pressing plate (3) is mounted on the support (2) through a rotating shaft (6), and the other end of the pressing plate is mounted on the fixing block (4) through the rotating shaft (6), so that the pressing plate (3) can rotate and open; the fixing block (4) is provided with a U-shaped notch, the fixing block is fixed on the side surface of the shell (7) through the matching of the fixing bolt, the U-shaped notch and the adjusting holes in the side surface of the shell (7), and the height adjustment of the pressing plate (3) is realized through adjusting the positions of the fixing bolt on different adjusting holes; a through hole is formed in the center of the pressing plate (3), the switching block (5) is arranged in the central through hole, and the top end of the switching block (5) is fixed on the pressing plate (3) through a rotating shaft (6);
the two cover plates (1) are symmetrically arranged on one edge of the shell (7) through the rotating shaft (6) and are positioned on two sides of the bracket (2), so that the cover plates (1) are covered on the shell (7), and the two cover plates (1) can respectively rotate left and right to be opened or closed; a through hole is formed in the center of the cover plate (1), corresponds to the central through hole of the pressing plate (3), and is used for placing the adapter block (5);
the switching block (5) is of an open groove structure, the opening is downward, and the lower end of the switching block (5) is positioned in the shell (7); the moment spring (10) is arranged in a groove body of the transfer block (5), the top end of the moment spring is connected with the top of the transfer block (5), and the bottom end of the moment spring is connected with the pressure slide block (11); the upper part of the pressure block (12) is provided with a groove, the lower part of the pressure slide block (11) is inserted into the groove, and the upper part of the pressure slide block (11) is positioned in the transfer block (5).
2. A soldering method of a thermoelectric cooler with double-sided gold-tin solder, using the soldering apparatus of claim 1, comprising the steps of:
the method comprises the following steps: firstly, preheating a heating table (8), starting a temperature control instrument of the heating table (8), and preheating to 90-110 ℃; then putting the laser tube shell into the center position in the shell (7), putting the thermoelectric refrigerator (14) with double-sided gold-tin solder into the laser tube shell, and putting the electric plate (13) on the thermoelectric refrigerator (14); the pressing plate (3) is rotated to the horizontal position, the fixing block (4) is rotated, the fixing block (4) is fixed on the side face of the shell (7) through the fixing bolt, the pressing plate (3) is locked, the pressure sliding block (11) applies pressure to the pressure block (12) through the compression moment spring (10), and therefore the pressure block (12) is pressed downwards, the pressure block (12) is enabled to compress the electric plate (13), complete contact between the thermoelectric refrigerator (14) and the electric plate (13) and a laser tube shell is guaranteed, then the two cover plates (1) are rotated to be closed, and the whole welding space in the shell (7) is sealed;
step two: opening a nitrogen device outside the device, enabling nitrogen to enter the shell (7) through the air inlet flow channel (9), the air groove (15) and the air inlet (16), enabling the nitrogen blown out from the bottom to fill the whole welding space, and continuously filling nitrogen;
step three: continuously heating the heating table (8) to 130-140 ℃, continuously heating for 10-20s to completely melt the gold-tin solder on the upper surface and the lower surface of the thermoelectric refrigerator (14), welding the lower surface of the thermoelectric refrigerator (14) on the laser tube shell, and welding the upper surface of the thermoelectric refrigerator on the electric plate (13);
step four: stopping heating the heating table (8), increasing the flow of the nitrogen to cool the whole device to room temperature, cooling the gold-tin solder, and completely solidifying to finish the welding process; and opening the cover plate (1), the fixing block (4) and the pressing plate (3) in sequence, and then taking out the laser tube shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010308934.7A CN111360357B (en) | 2020-04-19 | 2020-04-19 | Welding device and method for thermoelectric refrigerator with double-sided gold-tin solder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010308934.7A CN111360357B (en) | 2020-04-19 | 2020-04-19 | Welding device and method for thermoelectric refrigerator with double-sided gold-tin solder |
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| CN111360357A true CN111360357A (en) | 2020-07-03 |
| CN111360357B CN111360357B (en) | 2021-03-12 |
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Cited By (2)
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| CN113732432A (en) * | 2021-10-18 | 2021-12-03 | 东莞先导先进科技有限公司 | Welding jig for thermoelectric refrigerator |
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