CN115008113B - Positioning device for laser packaging - Google Patents
Positioning device for laser packaging Download PDFInfo
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- CN115008113B CN115008113B CN202210955494.3A CN202210955494A CN115008113B CN 115008113 B CN115008113 B CN 115008113B CN 202210955494 A CN202210955494 A CN 202210955494A CN 115008113 B CN115008113 B CN 115008113B
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- 238000004806 packaging method and process Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000005096 rolling process Methods 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000000741 silica gel Substances 0.000 claims description 7
- 229910002027 silica gel Inorganic materials 0.000 claims description 7
- 241001270131 Agaricus moelleri Species 0.000 claims description 3
- 230000009351 contact transmission Effects 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 2
- 238000005245 sintering Methods 0.000 abstract description 24
- 238000009825 accumulation Methods 0.000 abstract description 4
- 239000004065 semiconductor Substances 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 238000005538 encapsulation Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 206010066054 Dysmorphism Diseases 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- 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 for a procedure covered by only one of the other main groups of this subclass
- B23K37/04—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Semiconductor Lasers (AREA)
Abstract
The invention relates to the field of lasers, in particular to a positioning device for laser packaging. The technical problem is as follows: when the laser chip is fixed, the pressure is high, the chip is easy to damage, the chip and the heat sink material are fixed through sintering, stress accumulation is easy to occur, and stress can be applied to the chip to cause chip damage. The technical scheme is as follows: a positioning device for laser packaging comprises a retraction unit, a power unit and the like; the upper part of the retraction unit is connected with a power unit. According to the invention, through positioning the laser chip in the front, back, left and right directions, after the positioning is finished, the laser chip is prevented from being sintered with the roller and the special-shaped limiting plate, and after the sintering is finished, the sintering stability can be detected, so that the heat sink sheet is prevented from being separated from the laser chip in the use process, uniform pressure is provided for the laser chip, the stress on the laser chip is slowly released and dispersed, and the damage of the stress concentration laser chip is avoided.
Description
Technical Field
The invention relates to the field of lasers, in particular to a positioning device for laser packaging.
Background
With the development and progress of semiconductor laser technology, the output power, the electro-optic conversion efficiency, the reliability and the service life of the semiconductor laser are continuously improved, the semiconductor laser can be widely applied to the fields of laser pumping, laser processing, laser ranging, scientific research, medical treatment and the like, the market demand is huge, and the semiconductor laser has higher requirements on the packaging of the semiconductor laser to ensure the long-term stable work of the laser.
At present most high power semiconductor laser bar packaging structure mainly uses copper as heat sink material, laser chip is unstable when the encapsulation, if directly adopt anchor clamps fixed, pressure is great during the fixed, damage the chip easily, and anchor clamps also easily glue together with laser instrument chip and heat sink material in sintering process, lead to sintering quality poor, and in practical application, the encapsulation is fixed chip and heat sink material through the sintering completion, the problem of stress accumulation easily appears, and stress can be exerted on laser chip, lead to laser instrument bar to produce the bending, influence the output characteristic of laser instrument.
Disclosure of Invention
The invention provides a positioning device for laser packaging, aiming at overcoming the defects that when a laser chip is fixed, the pressure is high, the chip is easy to damage, the chip and a heat sink material are fixed through sintering, stress accumulation is easy to occur, and stress can be applied to the chip to cause chip damage.
The technical implementation scheme of the invention is as follows: a positioning device for laser packaging comprises a bottom plate and a limiting strip; two limiting strips are fixedly connected to the upper surface of the bottom plate; the device also comprises a fixing plate, a pin rod, a pressing plate, a hook ring, an elastic sheet, a retracting unit, a power unit, a limiting unit and a self-locking unit; the upper surface of the bottom plate is detachably connected with a fixing plate, and the fixing plate is provided with a plurality of radiating grooves; the left side and the right side of the fixing plate are respectively contacted with a limit strip; four pin rods are fixedly connected to the upper surface of the fixed plate; the bottom plate is connected with a retraction unit; the retracting unit is connected with four hook rings; the lower parts of the four hook rings are fixedly connected with a pressure plate together, and the pressure plate is provided with a plurality of heat dissipation grooves; the pressing plate is positioned above the four pin rods; a convex part extends from each of the four corners of the pressing plate; the upper part of the retraction unit is connected with a power unit; the fixed plate is connected with a limiting unit; the left part and the right part of the pressing plate are both connected with a limiting unit; the pressure plate is connected with a self-locking unit; the self-locking unit is connected with four elastic sheets; the lower parts of the four elastic sheets are contacted with the pressure plate.
Furthermore, the fixing plate is of a middle-shaped structure with the middle part larger than two sides.
Furthermore, the retraction unit comprises a support column, a top plate, a first electric actuator and a pneumatic clamp; the upper surface of the bottom plate is fixedly connected with four supporting columns; the upper parts of the four supporting columns are fixedly connected with top plates; two first electric actuators are respectively arranged at the front part of the lower surface and the rear part of the lower surface of the top plate; the middle part of the lower surface of the top plate is connected with the power unit; the four first electric actuator telescopic parts are respectively fixedly connected with a pneumatic clamp; the lower parts of the four pneumatic clamps respectively clamp a hook ring.
Furthermore, the power unit comprises an electric slide rail, an electric slide block, a second electric actuator and a pressing block; the middle part of the lower surface of the top plate is provided with an electric slide rail; the electric sliding rail is connected with an electric sliding block in a sliding way; the electric slide block is provided with a second electric actuator; the telescopic part of the second electric actuator is fixedly connected with a pressing block.
Furthermore, the limiting unit comprises a positioning seat, a support plate, a first wedge-shaped block, a second wedge-shaped block, a first support rod, a first elastic piece, an annular plate, a second elastic piece, a first sliding rod, a first connecting rod, a rolling shaft and a special-shaped limiting plate; the front part of the upper surface of the fixed plate and the rear part of the upper surface are fixedly connected with a positioning seat respectively, and the heights of the positioning seats and the heat sink material are consistent; the back sides of the two positioning seats are respectively provided with a through groove; the upper surfaces of the two positioning seats are fixedly connected with a support plate respectively; the back sides of the two supporting plates are respectively provided with an accommodating cavity; a first wedge-shaped block is connected between each positioning seat and the adjacent support plate in a sliding manner; the two positioning seats are respectively connected with a second wedge-shaped block in a sliding manner; the two second wedge blocks are respectively in contact transmission with one first wedge block; the upper surfaces of the two first wedge-shaped blocks are fixedly connected with two first supporting rods which are distributed left and right; the opposite sides of the two first support rods on the left side are respectively provided with an invagination groove; the opposite sides of the two right first supporting rods are respectively provided with an invagination groove; two first elastic pieces are fixedly connected to the upper surfaces of the two first wedge-shaped blocks respectively; each first supporting rod penetrates through the middle of one first elastic piece; the upper part of each first elastic part is fixedly connected with an annular plate; the middle part of each annular plate is connected with a first supporting rod in a sliding way; two second elastic pieces are connected between each support plate and one first wedge-shaped block, and the second elastic pieces are positioned in the accommodating cavities; two first sliding rods are fixedly connected to opposite sides of the two first wedge-shaped blocks respectively, and the two adjacent first sliding rods pass through a support plate together and are connected with the support plate in a sliding manner; a first connecting rod is fixedly connected to the rear sides of the two front first sliding rods; a first connecting rod is also fixedly connected to the front sides of the two rear first sliding rods; each first sliding rod is positioned above one second elastic piece; each of the left part and the right part of each first connecting rod is rotatably connected with a roller; the four rolling shafts are positioned between the two support plates; the left part and the right part of the pressing plate are respectively fixedly connected with a special-shaped limiting plate; the lower parts of the two special-shaped limiting plates are arc-shaped parts; the lower parts of the two special-shaped limiting plates are limiting parts; the limiting part is positioned above the arc part; the upper parts of the two special-shaped limiting plates are bent parts.
Furthermore, the upper part of the invagination groove is of a flat-top structure, and the lower part of the invagination groove is of an inclined plane structure.
Furthermore, a silica gel pad is arranged on the surface of the rolling shaft.
Furthermore, the two special-shaped limiting plates are integrally in two inverted hook shapes which are arranged oppositely.
Furthermore, the self-locking unit comprises a positioning rod, a second connecting rod, a second supporting rod, a third connecting rod, a T-shaped plate, a plug board, a third elastic element, a second sliding rod and a connecting rope; the upper surface of the pressing plate is fixedly connected with four positioning rods which are distributed in a rectangular shape; a second connecting rod is connected with the front adjacent positioning rod and the rear adjacent positioning rod in a sliding manner; a second support rod is fixedly connected between the front part and the rear part of the two second connecting rods; a third connecting rod is fixedly connected between the two second connecting rods; the back sides of the two second supporting rods are fixedly connected with a T-shaped plate respectively; the back sides of the two T-shaped plates are respectively provided with a T-shaped groove; the upper parts of the two T-shaped plates are respectively provided with a straight sliding chute; the lower parts of the two straight chutes are respectively communicated with a T-shaped groove; the upper parts of the two T-shaped plates are respectively provided with a vertical groove; the lower parts of the two vertical grooves are respectively communicated with a T-shaped groove; the two straight sliding grooves are positioned between the two vertical grooves; an inserting plate is connected in each of the two T-shaped grooves in a sliding manner; the two inserting plates are respectively connected with a T-shaped plate in a sliding way; two third elastic parts are fixedly connected to the opposite sides of the two inserting plates respectively; opposite sides of the front two third elastic pieces and the rear two third elastic pieces are fixedly connected with the T-shaped groove; the middle part of the third connecting rod is connected with a second sliding rod in a sliding way; the upper part of the second sliding rod is fixedly connected with two connecting ropes; the two connecting ropes back to back wind the second support rod and are fixedly connected with an inserting plate through connecting rods.
Furthermore, the upper part of the second supporting rod is a circular arc-shaped bulge.
The invention has the following advantages: according to the invention, the positioning of the laser chip in the front and back direction is realized through the matching of the first support rod and the inserting plate, and after the positioning is finished, the inserting plate is clamped on the inner sunken groove, so that the rolling shaft is far away from the laser chip, and the problem that the laser chip and the rolling shaft are sintered together in the sintering process is effectively avoided.
According to the invention, the laser chip is positioned in the left and right directions by downward movement of the two special-shaped limiting plates, and after the positioning is finished, the two special-shaped limiting plates are not in contact with the sintering positions of the laser chip and the heat sink sheet, so that the bonding of the laser chip and the heat sink sheet of the special-shaped limiting plates in the sintering process is prevented, and after the sintering is finished, the two special-shaped limiting plates move upwards, and the sintering stability can be detected, so that the heat sink sheet is prevented from being separated from the laser chip in the using process.
According to the invention, through the matching of the pressing plate and the elastic sheet, uniform pressure is provided for the laser chip in the sintering process, and when the laser chip is turned up, the stress on the laser chip is slowly released and dispersed, so that the problem of damage of the laser chip caused by stress concentration of the laser chip in the sintering process is avoided.
Drawings
Fig. 1 is a schematic perspective view of a positioning device for laser package according to a first embodiment of the present invention;
FIG. 2 is a front view of the positioning device for a laser package of the present invention;
FIG. 3 is a schematic perspective view of a retracting unit of the positioning device for laser package according to the present invention;
FIG. 4 is a schematic view of a first assembled perspective structure of the positioning device for laser package of the present invention;
FIG. 5 is a schematic diagram of a second combined perspective structure of the positioning device for laser package of the present invention;
FIG. 6 is a front view of a power unit of the positioning device for a laser package of the present invention;
fig. 7 is a schematic perspective view of a positioning device for laser package according to a second embodiment of the present invention;
fig. 8 is a schematic perspective view of a position limiting unit of the positioning device for laser package according to the present invention;
FIG. 9 is a schematic view of a third assembled perspective structure of the positioning device for laser package of the present invention;
fig. 10 is a partial cross-sectional view of a spacing unit of the positioning device for laser packages of the present invention;
FIG. 11 is a schematic view of a fourth combined structure of a positioning device for laser package according to the present invention;
fig. 12 is a schematic perspective view of a self-locking unit of the positioning device for laser package according to the present invention.
The meaning of the reference symbols in the figures: 1-bottom plate, 2-limiting strip, 3-fixing plate, 4-pin rod, 5-pressing plate, 6-hook ring, 7-elastic sheet, 5001-bulge, 101-support, 102-top plate, 103-first electric actuator, 104-pneumatic clamp, 201-electric slide rail, 202-electric slide block, 203-second electric actuator, 204-pressing block, 301-positioning seat, 302-support plate, 303-first wedge block, 304-second wedge block, 305-first support rod, 306-first elastic member, 307-annular plate, 308-second elastic member, 309-first slide rod, 3010-first connecting rod, 3011-roller, 3012-special-shaped limiting plate, 30101-through groove, 30201-accommodating cavity, 30501-inner recess groove, 301201-arc part, 301202-limiting part, 301203-bending part, 401-positioning rod, 402-second connecting rod, 403-second support rod, 404-third connecting rod, 40405-T, 40405-inserting plate, 40407-third elastic member, 407-third elastic member, 3011-T-elastic member, 409-T-vertical groove, and 40501-vertical groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
A positioning device for laser packaging is disclosed, and is shown in figures 1-12, and comprises a bottom plate 1 and a limit strip 2; the upper surface of the bottom plate 1 is welded with two limiting strips 2; the device also comprises a fixed plate 3, a pin rod 4, a pressure plate 5, a hook ring 6, an elastic sheet 7, a retraction unit, a power unit, a limiting unit and a self-locking unit; the upper surface of the bottom plate 1 is detachably connected with a fixing plate 3, and a plurality of radiating grooves are formed in the fixing plate 3; the left side and the right side of the fixing plate 3 are respectively contacted with a limiting strip 2; four pin rods 4 are welded on the upper surface of the fixed plate 3; the base plate 1 is connected with a retraction unit; the retraction unit is connected with four hook rings 6; the lower parts of the four hook rings 6 are welded with a pressure plate 5 together, and the pressure plate 5 is provided with a plurality of radiating grooves; the pressing plate 5 is positioned above the four pin rods 4; a convex portion 5001 extends from each of four corners of the pressing plate 5; the upper part of the retraction unit is connected with a power unit; the fixed plate 3 is connected with a limiting unit; the left part and the right part of the pressure plate 5 are both connected with a limiting unit; the pressing plate 5 is connected with a self-locking unit; the self-locking unit is connected with four elastic sheets 7; the lower parts of the four elastic pieces 7 are in contact with the pressing plate 5, a heat sink material is placed on the fixing plate 3, the fixing plate is fixed in a limiting mode through the four pin rods 4, the laser chip is placed on the heat sink material, the fixing plate 3 is pressed down on the upper surface of the laser chip by the retraction and extension unit, meanwhile, the fixing plate 3 drives the self-locking unit to move down, the self-locking unit is matched with the limiting unit, the position of the laser chip on the heat sink material is limited, the limiting unit and the self-locking unit are locked by the power unit, the fixing plate 3 is transferred to the sintering furnace, stress generated by the laser chip is released slowly through deformation of the four elastic pieces 7.
The fixing plate 3 is of a middle-shaped structure with the middle part larger than the two sides, and is used for reducing the friction between the fixing plate 3 and the two limiting strips 2 and reducing the displacement of the chip.
According to fig. 1 and 3, the retraction unit comprises a support 101, a top plate 102, a first electric actuator 103 and a pneumatic clamp 104; four pillars 101 are welded on the upper surface of the bottom plate 1; the top plates 102 are welded to the upper parts of the four pillars 101; two first electric actuators 103 are respectively arranged at the front part of the lower surface and the rear part of the lower surface of the top plate 102; the middle part of the lower surface of the top plate 102 is connected with a power unit; the four first electric actuators 103 are respectively fixedly connected with a pneumatic clamp 104; the lower portions of the four pneumatic clamps 104 each hold one hook ring 6.
The first electric actuator 103 is an electric push rod.
As shown in fig. 1 and fig. 6, the power unit includes an electric slide rail 201, an electric slide block 202, a second electric actuator 203, and a press block 204; the middle part of the lower surface of the top plate 102 is provided with an electric slide rail 201; an electric sliding block 202 is connected on the electric sliding rail 201 in a sliding manner; the electric slide block 202 is provided with a second electric actuator 203; the second electric actuator 203 has a compression block 204 fixed to the expansion portion thereof.
The second electric actuator 203 is an electric push rod.
As shown in fig. 1 and fig. 7 to 10, the limiting unit includes a positioning seat 301, a support plate 302, a first wedge block 303, a second wedge block 304, a first support rod 305, a first elastic member 306, an annular plate 307, a second elastic member 308, a first sliding rod 309, a first link 3010, a roller 3011, and a special-shaped limiting plate 3012; the front part of the upper surface and the rear part of the upper surface of the fixing plate 3 are respectively welded with a positioning seat 301, and the heights of the positioning seats 301 and the heat sink material are consistent; two through grooves 30101 are respectively formed on the opposite back sides of the two positioning seats 301; the upper surfaces of the two positioning seats 301 are respectively welded with a support plate 302; the back sides of the two support plates 302 are respectively provided with an accommodating cavity 30201; a first wedge-shaped block 303 is connected between each positioning seat 301 and the adjacent support plate 302 in a sliding manner; a second wedge block 304 is connected to each of the two positioning seats 301 in a sliding manner; each of the two second wedge blocks 304 is in contact transmission with one first wedge block 303; the upper surfaces of the two first wedge-shaped blocks 303 are respectively welded with two first supporting rods 305 which are distributed left and right; the opposite sides of the two left first supporting rods 305 are respectively provided with an inward concave groove 30501; the opposite sides of the two right first supporting rods 305 are respectively provided with an inward concave groove 30501; two first elastic pieces 306 are fixedly connected to the upper surfaces of the two first wedge blocks 303 respectively; each first strut 305 passes through the middle of one first elastic member 306; the upper part of each first elastic piece 306 is fixedly connected with a ring-shaped plate 307; the middle part of each annular plate 307 is connected with a first strut 305 in a sliding way; two second elastic pieces 308 are connected between each support plate 302 and one first wedge-shaped block 303, and the second elastic pieces 308 are positioned in the accommodating cavities 30201; two first sliding rods 309 are welded on the opposite sides of the two first wedge-shaped blocks 303 respectively, the two adjacent first sliding rods 309 pass through one support plate 302 together, and the first sliding rods 309 are connected with the support plate 302 in a sliding manner; a first connecting rod 3010 is welded on the rear sides of the two front first sliding bars 309; a first connecting rod 3010 is also welded at the front sides of the two rear first sliding bars 309 together; each first slide bar 309 is located above one second elastic member 308; each first link 3010 is rotatably connected with a roller 3011 at the left part and the right part; four rollers 3011 are positioned between two support plates 302; the left part and the right part of the pressing plate 5 are respectively connected with a special-shaped limiting plate 3012 through bolts; the lower parts of the two special-shaped limiting plates 3012 are arc-shaped parts 301201; the lower parts of the two special-shaped limiting plates 3012 are limiting parts 301202; the limiting part 301202 is located above the arc-shaped part 301201; the upper parts of the two special-shaped limiting plates 3012 are bending parts 301203.
The first elastic member 306 is a spring.
The second elastic member 308 is a spring.
The upper portion of the invagination groove 30501 is of a flat-top structure, and the lower portion of the invagination groove 30501 is of an inclined plane structure.
The surface of the roller 3011 is provided with a silica gel pad to prevent the chip from being extruded and deformed by the roller 3011.
Two dysmorphism limiting plate 3012 wholly are two overhead kick that set up in opposite directions and appear, and arc portion 301201 avoids special-shaped limiting plate 3012 directly to push up on the chip surface, and then presss from both sides on the heat sink piece, and two spacing portions 301202 are the inclined plane for being used for the location to the chip in opposite directions, and kink 301203 is used for avoiding the position of chip and heat sink piece contact.
As shown in fig. 1 and fig. 11-12, the self-locking unit includes a positioning rod 401, a second connecting rod 402, a second supporting rod 403, a third connecting rod 404, a T-shaped plate 405, an inserting plate 406, a third elastic member 407, a second sliding rod 408 and a connecting rope 409; four positioning rods 401 which are distributed in a rectangular shape are welded on the upper surface of the pressing plate 5; a second connecting rod 402 is connected with the front and rear adjacent positioning rods 401 together in a sliding manner; a second strut 403 is welded between the front part and the rear part of the two second connecting rods 402; a third connecting rod 404 is welded in the middle between the two second connecting rods 402; the opposite sides of the two second struts 403 are respectively welded with a T-shaped plate 405; the two T-shaped plates 405 are provided with a T-shaped groove 40501 on the opposite sides respectively; the upper parts of the two T-shaped plates 405 are respectively provided with a straight chute 40502; the lower parts of the two straight chutes 40502 are respectively communicated with a T-shaped groove 40501; the upper parts of the two T-shaped plates 405 are respectively provided with a vertical groove 40503; the lower parts of the two vertical grooves 40503 are respectively communicated with a T-shaped groove 40501; the two linear sliding grooves 40502 are positioned between the two vertical grooves 40503; an inserting plate 406 is connected in each of the two T-shaped grooves 40501 in a sliding manner; two insert plates 406 are respectively connected with a T-shaped plate 405 in a sliding way; two third elastic parts 407 are fixedly connected to the opposite sides of the two insertion plates 406 respectively; the opposite sides of the front two third elastic members 407 and the rear two third elastic members 407 are fixedly connected with the T-shaped groove 40501; the middle part of the third connecting rod 404 is connected with a second sliding rod 408 in a sliding way; two connecting ropes 409 are fixedly connected to the upper part of the second sliding rod 408; two connecting ropes 409 are fixedly connected with one inserting plate 406 through connecting rods after winding around the second supporting rod 403 from opposite sides.
The upper part of the second supporting rod 403 is a circular arc-shaped bulge for connecting the rope 409 for guiding.
The third elastic member 407 is a spring.
The sintering temperature of the laser chip is 180-330 ℃, the silica gel pad on the surface of the roller 3011 is special silica gel, the tolerance temperature is 300-350 ℃, the connection rope 409 is a glass fiber rope, and the tolerance temperature is 350-550 ℃, so that the silica gel pad on the surface of the roller 3011 and the connection rope 409 can tolerate the sintering temperature.
This a positioner for laser instrument encapsulation, its heat sinks the piece and is square sheet, and the bolt hole has all been seted up in the four corners, and the position of four round pin poles 4 is corresponding with the position of the bolt hole of the heat sink piece, and the laser instrument chip will be less than the heat sink piece for the laser instrument chip can not block the bolt hole of the heat sink piece.
Before the laser is packaged, firstly, an operator transfers a heat sink sheet to the upper side of a fixing plate 3, then the front and rear positions of the heat sink sheet are limited by two positioning seats 301, then the heat sink sheet is accurately positioned by four pin rods 4 and placed on the fixing plate 3, then a laser chip is transferred to the upper surface of the heat sink sheet, then four first electric actuators 103 are controlled to be started, the four first electric actuators 103 extend, a synchronous belt pressing plate 5 moves downwards, when the lower surface of the pressing plate 5 presses the upper surface of the chip, four pneumatic clamps 104 are controlled to be started to be opened, the four hook rings 6 are loosened, then the four first electric actuators 103 are controlled to be started, the four first electric actuators 103 contract, the four pneumatic clamps 104 are respectively separated from one hook ring 6, then the four first electric actuators 103 are controlled to be closed, the work of pressing the laser chip is completed, and the problem that the laser chip is damaged due to overlarge pressure caused on the laser chip is effectively avoided.
Meanwhile, when the pressing plate 5 moves downwards, the pressing plate 5 also drives the two T-shaped plates 405 to move downwards synchronously, the two T-shaped plates 405 drive one inserting plate 406 to move downwards respectively, then the two inserting plates 406 are in contact with the two first supporting rods 305 respectively, the two T-shaped plates 405 are in contact with the two annular plates 307 respectively, along with the downward movement of the pressing plate 5, the four first elastic pieces 306 are compressed, every two first supporting rods 305 form a group, the two pressing plate 5 drive one group of first supporting rods 305 to move downwards respectively, through the cooperation of the first wedge-shaped blocks 303 and the second wedge-shaped blocks 304, the two first wedge-shaped blocks 303 move towards the mutually approaching direction, the four second elastic pieces 308 are compressed, along with the movement of the two first wedge-shaped blocks 303, the two rolling shafts 3011 are driven to move towards the mutually approaching direction synchronously respectively, the four rolling shafts 3011 are in contact with the laser chip through the silica gel pads on the surfaces of the four rolling shafts 3011, the front and back positions of the laser chip are shifted and limited until the laser chip is located at the center position of the upper surface of the laser chip, so as to complete the front and back positioning of the laser chip, and further avoid damage to the laser chip 3011 at regular time.
When the pressing plate 5 moves downwards, the pressing plate 5 drives the two special-shaped limiting plates 3012 to move downwards, when the laser chip deviates in the left-right direction, the position of the laser chip is continuously adjusted in the left-right direction through the two special-shaped limiting plates 3012 moving downwards, in the process that the laser chip moves left and right, the laser chip moves on the surfaces of the four rolling shafts 3011, the damage to the laser chip caused by friction in the movement is reduced through rolling of the four rolling shafts 3011, in the process of adjusting the position of the laser chip, the arc-shaped portions 301201 are bent outwards, after the laser chip is contacted with the laser chip, the downward pressure of the special-shaped limiting plates 3012 is directly transmitted to the laser chip, the problem of damage to the laser chip is caused, then along with the continuous downward movement of the special-shaped limiting plates 3012, the limiting portions 301202 are contacted with the laser chip, the inclined surfaces of the two limiting portions 301202 are contacted and matched with the laser chip, the position of the laser chip is adjusted, the laser chip is continuously positioned in the left-right direction, then the special-shaped limiting plates 3012 move downwards, the position of the laser chip is not contacted with the laser chip, the middle heat sink limiting plate, the heat sink limiting plate, and the heat sink limiting plate is not contacted with the laser chip, the heat sink limiting plate 301202, and the problem that the special-sink heat sink chip is avoided.
At this time, the laser chip has been positioned in four directions, namely front, back, left and right, and pressure is applied to the upper side of the laser chip, then the start electric slider 202 is controlled to move on the electric slide rail 201, the press block 204 is synchronously driven to move to the right above the second slide bar 408, then the electric slider 202 is controlled to stop moving, then the start second electric actuator 203 is controlled to extend, the press block 204 is synchronously driven to move downwards, after the lower surface of the press block 204 contacts with the second slide bar 408, the second slide bar 408 moves downwards along with the press block 204, the second slide bar 408 drives the two plug boards 406 to move towards the directions close to each other through the two connecting ropes 409, the four third elastic members 407 recover to be compressed, at this time, the two plug boards 406 leave from the position of the vertical slot 40503, the four second elastic members 308 recover, the four first supporting rods 305 are synchronously driven to move upwards through the vertical slot 40503, and the four rolling shafts 3011 are far away from the surface of the laser chip, effectively avoiding the problems that in the sintering and fixing process, the roller 3011 and the laser chip are sintered together, then the first electric actuator 103 is controlled to stop extending, at this time, the sunken groove 30501 corresponds to the position of the two inserting plates 406, then the first electric actuator 103 is controlled to be started to shrink, the four third elastic members 407 recover to synchronously drive the two inserting plates 406 to move in the direction away from each other, so that the two inserting plates 406 are respectively inserted into one sunken groove 30501, because the upper part of the sunken groove 30501 is flat-topped and the lower part of the sunken groove 30501 is inclined, when the inserting plates 406 horizontally move towards the sunken groove 30501, the opening of the sunken groove 30501 is larger through the inclined plane of the sunken groove 30501, the inserting plates 406 are conveniently inserted into the sunken groove 30501, the clamping of the inserting plates 406 through the sunken grooves 30501 of the flat-topped, and the problem that the inserting plates 406 are matched with the sunken grooves 30501 to cause unstable chip displacement can be effectively avoided, the locking of the pressure above the laser chip is completed, and the problem that the laser chip is damaged in the sintering process of the laser chip and the heat sink sheet due to the uneven pressure above the laser chip is avoided.
Until now, the fixing of the laser chip has been completed, then an operator pulls out the fixing plate 3 from the bottom plate 1 along the two limiting strips 2, and then the fixing plate 3 is transferred into a sintering furnace, and the laser chip and the heat sink are sintered and fixed, wherein in the sintering process, due to uneven heating, stress accumulation can be caused on the laser chip, and stress is applied on the laser chip, so that the laser bar generates bending deformation, and the laser coherence of the laser output is affected, at this time, through the heat dissipation grooves preset on the fixing plate 3 and the pressing plate 5, the heat is uniformly guided and dispersed, so that uneven heating of the heat sink plate and the laser chip is avoided, and in the sintering process, when the generated stress makes the bar on the laser chip deform, the deformation is conducted onto the pressing plate 5, upward movement is performed on the pressing plate 5, then the four elastic plates 7 deform, the positions of the four elastic plates 7 in contact with the pressing plate 5 are moved in the direction of one convex portion 5001, so as to realize the stress conducted onto the pressing plate 5, slow-release and dispersion can be effectively avoided, when the stress concentration is effectively avoided, the pressing plate 5 still presses the surface of the laser chip, and the laser chip is affected, and the characteristics of the laser chip are affected by the overlarge laser chip are caused.
Through the processing steps, sintering and fixing of the laser chip and the heat sink sheet are completed, then the fixing plate 3 is taken out of the sintering furnace, and is transferred to a position between the two limiting strips 2 on the base plate 1 after being cooled, then the pressing block 204 presses the second sliding rod 408, so that the two inserting plates 406 respectively withdraw from one recessed groove 30501, meanwhile, the pressing plate 5 is separated from the surface of the laser chip through the cooperation of the first electric actuator 103 and the pneumatic clamp 104, the four first elastic parts 306 reset, after the four first supporting rods 305 withdraw from the two vertical grooves 40503, the second electric actuator 203 contracts, the four third elastic parts 407 recover, so that the two inserting plates 406 reset synchronously, when the pressing plate 5 moves upwards, the pressing plate 5 drives the two special-shaped limiting plates 3012 to move upwards, the two limiting parts 301202 move upwards on the surface of the heat sink sheet, when the two limiting parts 301202 move to the laser chip, the laser chip and the fixing degree of the laser chip and the heat sink sheet can be detected, the fixing degree of the laser chip and the heat sink sheet 301is checked, when the laser chip is not completely sintered, and the laser chip is not completely sintered.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. A positioning device for laser packaging comprises a bottom plate (1) and a limiting strip (2); two limiting strips (2) are fixedly connected to the upper surface of the bottom plate (1); the method is characterized in that: the device also comprises a fixing plate (3), a pin rod (4), a pressing plate (5), a hook ring (6), an elastic sheet (7), a retraction unit, a power unit, a limiting unit and a self-locking unit; the upper surface of the bottom plate (1) is detachably connected with a fixing plate (3), and the fixing plate (3) is provided with a plurality of radiating grooves; the left side and the right side of the fixed plate (3) are respectively contacted with one limiting strip (2); four pin rods (4) are fixedly connected to the upper surface of the fixed plate (3); the bottom plate (1) is connected with a retraction unit; the retractable unit is connected with four hook rings (6); the lower parts of the four hook rings (6) are fixedly connected with a pressure plate (5) together, and a plurality of heat dissipation grooves are formed in the pressure plate (5); the pressing plate (5) is positioned above the four pin rods (4); a bulge (5001) extends from each of four corners of the pressure plate (5); the upper part of the retraction unit is connected with a power unit; the fixed plate (3) is connected with a limiting unit; the left part and the right part of the pressure plate (5) are both connected with a limiting unit; the pressing plate (5) is connected with a self-locking unit; the self-locking unit is connected with four elastic sheets (7); the lower parts of the four elastic sheets (7) are contacted with the pressure plate (5);
the limiting unit comprises a positioning seat (301), a support plate (302), a first wedge-shaped block (303), a second wedge-shaped block (304), a first support rod (305), a first elastic piece (306), an annular plate (307), a second elastic piece (308), a first sliding rod (309), a first connecting rod (3010), a rolling shaft (3011) and a special-shaped limiting plate (3012); the front part of the upper surface and the rear part of the upper surface of the fixing plate (3) are respectively fixedly connected with a positioning seat (301), and the heights of the positioning seats (301) and the heat sink material are consistent; the opposite back sides of the two positioning seats (301) are respectively provided with a through groove (30101); the upper surfaces of the two positioning seats (301) are fixedly connected with a support plate (302) respectively; the back sides of the two support plates (302) are respectively provided with an accommodating cavity (30201); a first wedge-shaped block (303) is connected between each positioning seat (301) and the adjacent support plate (302) in a sliding manner; a second wedge block (304) is connected to each of the two positioning seats (301) in a sliding manner; two second wedge blocks (304) are respectively in contact transmission with one first wedge block (303); the upper surfaces of the two first wedge-shaped blocks (303) are respectively fixedly connected with two first supporting rods (305) distributed left and right; the opposite sides of the two left first supporting rods (305) are respectively provided with an inward concave groove (30501); the opposite sides of the two right first supporting rods (305) are respectively provided with an inward concave groove (30501); two first elastic pieces (306) are fixedly connected to the upper surfaces of the two first wedge-shaped blocks (303) respectively; each first strut (305) passes through the middle of one first elastic piece (306); the upper part of each first elastic piece (306) is fixedly connected with a ring-shaped plate (307); the middle part of each annular plate (307) is connected with a first supporting rod (305) in a sliding way; two second elastic pieces (308) are connected between each support plate (302) and one first wedge-shaped block (303), and the second elastic pieces (308) are positioned in the accommodating cavities (30201); two first sliding rods (309) are fixedly connected to opposite sides of the two first wedge blocks (303), two adjacent first sliding rods (309) jointly penetrate through one support plate (302), and the first sliding rods (309) are connected with the support plate (302) in a sliding mode; a first connecting rod (3010) is fixedly connected with the rear sides of the two front first sliding rods (309) together; a first connecting rod (3010) is also fixedly connected to the front sides of the two rear first sliding rods (309); each first slide bar (309) is located above a second elastic member (308); a roller (3011) is rotatably connected to the left part and the right part of each first connecting rod (3010); the four rolling shafts (3011) are positioned between the two support plates (302); the left part and the right part of the pressing plate (5) are respectively fixedly connected with a special-shaped limiting plate (3012); the lower parts of the two special-shaped limiting plates (3012) are arc-shaped parts (301201); the lower parts of the two special-shaped limit plates (3012) are limit parts (301202); the limiting part (301202) is positioned above the arc-shaped part (301201); the upper parts of the two special-shaped limiting plates (3012) are bent parts (301203);
the self-locking unit comprises a positioning rod (401), a second connecting rod (402), a second supporting rod (403), a third connecting rod (404), a T-shaped plate (405), a flashboard (406), a third elastic piece (407), a second sliding rod (408) and a connecting rope (409); four positioning rods (401) which are distributed in a rectangular shape are fixedly connected to the upper surface of the pressing plate (5); a second connecting rod (402) is connected with the front and the rear adjacent positioning rods (401) in a sliding manner; a second strut (403) is fixedly connected between the front part and the rear part of the two second connecting rods (402); a third connecting rod (404) is fixedly connected between the two second connecting rods (402); the back sides of the two second supporting rods (403) are fixedly connected with a T-shaped plate (405) respectively; the opposite sides of the two T-shaped plates (405) are respectively provided with a T-shaped groove (40501); the upper parts of the two T-shaped plates (405) are respectively provided with a straight sliding groove (40502); the lower parts of the two straight chutes (40502) are respectively communicated with a T-shaped groove (40501); the upper parts of the two T-shaped plates (405) are respectively provided with a vertical groove (40503); the lower parts of the two vertical grooves (40503) are respectively communicated with a T-shaped groove (40501); the two straight sliding grooves (40502) are positioned between the two vertical grooves (40503); an inserting plate (406) is connected in each of the two T-shaped grooves (40501) in a sliding manner; the two inserting plates (406) are respectively connected with a T-shaped plate (405) in a sliding way; two third elastic parts (407) are fixedly connected to the opposite sides of the two inserting plates (406) respectively; the opposite sides of the front two third elastic pieces (407) and the rear two third elastic pieces (407) are fixedly connected with the T-shaped groove (40501); the middle part of the third connecting rod (404) is connected with a second sliding rod (408) in a sliding way; two connecting ropes (409) are fixedly connected to the upper part of the second sliding rod (408); two connecting ropes (409) are fixedly connected with one inserting plate (406) through connecting rods after winding around the second supporting rod (403) from opposite sides.
2. A positioning device for a laser package as claimed in claim 1, wherein: the retraction unit comprises a support column (101), a top plate (102), a first electric actuator (103) and a pneumatic clamp (104); the upper surface of the bottom plate (1) is fixedly connected with four supporting columns (101); the upper parts of the four supporting columns (101) are fixedly connected with top plates (102); two first electric actuators (103) are respectively arranged at the front part of the lower surface and the rear part of the lower surface of the top plate (102); the middle part of the lower surface of the top plate (102) is connected with a power unit; the four first electric actuators (103) are respectively fixedly connected with a pneumatic clamp (104) in the telescopic parts; the lower parts of the four pneumatic clamps (104) respectively clamp a hook ring (6).
3. A positioning device for a laser package as recited in claim 2, wherein: the power unit comprises an electric slide rail (201), an electric slide block (202), a second electric actuator (203) and a pressing block (204); the middle part of the lower surface of the top plate (102) is provided with an electric slide rail (201); an electric sliding block (202) is connected on the electric sliding rail (201) in a sliding way; a second electric actuator (203) is arranged on the electric slide block (202); the telescopic part of the second electric actuator (203) is fixedly connected with a pressing block (204).
4. A positioning device for a laser package as recited in claim 1, wherein: the fixing plate (3) is of a middle-shaped structure with the middle part larger than the two sides.
5. A positioning device for a laser package as recited in claim 1, wherein: the upper part of the invagination groove (30501) is of a flat-top structure, and the lower part of the invagination groove (30501) is of a slope structure.
6. A positioning device for a laser package as claimed in claim 1, wherein: the surface of the rolling shaft (3011) is provided with a silica gel pad.
7. A positioning device for a laser package as recited in claim 1, wherein: the two special-shaped limiting plates (3012) are integrally in two inverted hook shapes which are arranged oppositely.
8. A positioning device for a laser package as recited in claim 1, wherein: the upper part of the second support rod (403) is a circular arc bulge.
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| CN202210955494.3A CN115008113B (en) | 2022-08-10 | 2022-08-10 | Positioning device for laser packaging |
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| CN202210955494.3A CN115008113B (en) | 2022-08-10 | 2022-08-10 | Positioning device for laser packaging |
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| CN115008113A (en) | 2022-09-06 |
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Effective date of registration: 20230731 Address after: Building 805, Building 4, Future Entrepreneurship Plaza, North Section of Gangxing Third Road, Comprehensive Bonded Zone, High tech Zone, Jinan City, Shandong Province, 250000 Patentee after: Zhongke Zhengyuan (Shandong) Photoelectric Technology Co.,Ltd. Address before: 215600 No. 3, Xingyuan Road, Nanfeng Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee before: Suzhou New radium laser technology Co.,Ltd. |
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