CN107910429A - A kind of stabilization dispensing of LED light and high-efficiency sintered integrated apparatus - Google Patents
A kind of stabilization dispensing of LED light and high-efficiency sintered integrated apparatus Download PDFInfo
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- CN107910429A CN107910429A CN201711309690.9A CN201711309690A CN107910429A CN 107910429 A CN107910429 A CN 107910429A CN 201711309690 A CN201711309690 A CN 201711309690A CN 107910429 A CN107910429 A CN 107910429A
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- burner
- burner head
- baking oven
- dispensing
- sintering
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- 230000006641 stabilisation Effects 0.000 title claims abstract description 14
- 238000011105 stabilization Methods 0.000 title claims abstract description 14
- 238000005245 sintering Methods 0.000 claims abstract description 65
- 230000005611 electricity Effects 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 16
- 230000008569 process Effects 0.000 abstract description 15
- 239000000084 colloidal system Substances 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000007711 solidification Methods 0.000 abstract description 2
- 230000008023 solidification Effects 0.000 abstract description 2
- 239000003292 glue Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 238000004026 adhesive bonding Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005662 electromechanics Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/90—Methods of manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67242—Apparatus for monitoring, sorting or marking
- H01L21/67248—Temperature monitoring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/52—Encapsulations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
- H01L2933/0008—Processes
- H01L2933/0033—Processes relating to semiconductor body packages
- H01L2933/005—Processes relating to semiconductor body packages relating to encapsulations
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Engineering & Computer Science (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Radiation-Therapy Devices (AREA)
Abstract
Stabilization dispensing and high-efficiency sintered integrated apparatus the invention discloses a kind of LED light, wherein burner head includes the first burner head, the second burner head, first burner head is rotated around supporting rod, second burner head is fixed on burner bar, second burner head and the first burner head are all hemispherical, the radius value of second burner head is less than the radius value of the first burner head, second burner head and the first burner head are equipped with some small burners, the position of small burner is corresponding with dispensing position, and the dispensing positional distance of each small burner corresponding thereto is equal；Station groove is detachably connected with knot baking oven.In the preheating to LED light, prevent elargol be influenced by heat suddenly the later stage solidification effect while, station groove and LED light are put into togerther in sintering baking oven, avoiding will just be placed in station groove after LED light dispensing in the prior art, and since elargol is in colloid, security protection process needs meticulous, at the same time, in installation course, there is the problem of placement inconvenience in station groove in sintering baking oven.
Description
Technical field
The present invention relates to street lamp field, and in particular to a kind of stabilization dispensing of LED light and high-efficiency sintered integrated apparatus.
Background technology
Traditional lighting is typically to be realized using incandescent lamp, and incandescent lamp is that electric current is passed through heat caused by filament using filament
Amount aggregation so that the temperature of filament reaches more than 2000 degrees Celsius of incandescent state, so that filament light-emitting is illuminated, at this
During a, incandescent lamp needs consumption more heat transfer to shine, very waste of energy.In this context, people utilize two poles
LED energy-saving lamps have been made in pipe, and electric energy is converted into light to realize illumination by diode, reduces what is consumed during bulb light
Energy, to reach energy-saving and environment-friendly purpose.
In LED light packaging technology, it is that outer lead is connected on the electrode of LED chip, while protects led cores
Piece, and play the role of improving light extraction efficiency, including chip inspection, spread sheet, dispensing, by hand standby glue, thorn piece, automatic dress
Frame, sintering, pressure welding, glue dispensing and packaging, encapsulating encapsulation, moulded package, curing, solidify afterwards, rib cutting and scribing, test and packaging,
Wherein, gluing process is elargol or insulating cement on the point of the relevant position of led stents；Standby adhesive process and dispensing are on the contrary, standby glue is
First elargol is coated in led backplates with standby glue machine, then led of the back with elargol is installed on led stents, standby glue
Efficiency is far above dispensing, but not all product is applicable in standby adhesive process；Thorn blade technolgy is that LED chip after expansion is (standby by hand
Glue or not for glue) be placed on the fixture of thorn piece platform, LED support is placed under fixture, under the microscope with pin by LED chip one
A one is pierced onto corresponding position, is pierced piece by hand and has been compared a benefit with automatic shelve, easy to replace different cores at any time
Piece, is applicable to the product of installation various chips；Automatic shelve is combined with being stained with two big step of glue (dispensing) and chip,
Elargol (insulating cement) is first put on led stents, led chips are then picked up into shift position with vacuum slot, then be placed in phase
On the backing positions answered；The purpose of sintering process is to cure elargol, sintering require temperature is monitored, prevent it is batch not
It is good.The temperature general control of elargol sintering is at 150 DEG C, when sintering time 2 is small.170 DEG C are may be adjusted to according to actual conditions, 1
Hour.General 150 DEG C of insulating cement, 1 it is small when.Elargol sintering baking oven must when small (or 1) opens more when 2 is small by technological requirement
The product of sintering is changed, centre must not arbitrarily open.Sinter baking oven must not other purposes again, prevent from polluting.
The prior art is more sintered the elargol on led stents using a burner, there are sintering efficiency in sintering
Slowly, and the dispensing of diverse location is heated difference, is caused hardening time inconsistent, is extended sintering time.Meanwhile the prior art exists
During sintering, LED lamp is placed in the station groove in sintering equipment, since elargol is before curing colloid, is being placed on station
In groove, it is easy to cause elargol position and shifts, influences the curing process in later stage, and since station groove is generally fixed to sinter
In baking oven, inconvenient technical problem is placed there are LED light.
The content of the invention
Stabilization dispensing and efficient burning it is an object of the invention to overcome the deficiencies of the prior art and provide a kind of LED light
Tie integrated apparatus.
The purpose of the present invention is what is be achieved through the following technical solutions：A kind of stabilization dispensing of LED light and efficiently burning
Integrated apparatus is tied, including sinters baking oven, burner and is arranged on the matched station groove of burner, the burner, station groove
The sintering oven interior,
The burner includes burner head, burner bar, and the burner head includes the first burner head, the second burner head and is fixed on burning
The supporting rod of mouth bar, the burner head include the first burner head, the second burner head, and the first burner head is rotated around supporting rod,
Rotating mechanism includes motor, connecting rod, bearing and controller, and the output shaft of the motor is connected with connecting rod, described connecting rod one end
It is connected with bearing, the connecting rod other end is fixed on the first burner head, and the bearing is fixed on supporting rod, the controller and electricity
Electromechanics connection, controller are fixed on sintering baking oven outer surface；The second burner head is fixed on burner bar, the second burner head and
One burner head is all hemispherical, and the radius value of the second burner head is less than the radius value of the first burner head, the second burner head and first
Burner head is equipped with some small burners, the position of the small burner is corresponding with dispensing position, and each small burner is corresponding thereto
Dispensing positional distance is equal；
LED lamp holder is further included, the LED lamp holder is detachably connected with station groove, and the station groove and sintering baking oven are removable
Unload connection；The sintering baking oven bottom is equipped with sliding slot, and the station trench bottom is equipped with sliding block, and the sliding block moves in sliding slot,
Described sliding slot one end is arranged on the entrance of sintering baking oven, and the sliding slot other end is arranged on position corresponding with burner and the end is equipped with
First elastic parts.
Preferably, the sintering baking oven inner wall is equipped with temperature inductor, is equipped with sintering baking oven and is connected with the burner
Heater, the top surface for sintering baking oven is equipped with controller, the controller respectively with temperature inductor, heater Electricity Federation.
Preferably, the one side wall of the sintering baking oven uses glass, and the glass is arranged on easy to observation elargol sintering feelings
In the sintering oven side wall of condition.
Preferably, the LED lamp holder includes conductive substrates and the stent being connected with the conductive substrates, the station
Groove（3）It is interior to be equipped with the card slot for placing stent.
The beneficial effects of the invention are as follows：
1. by the setting on burner and the corresponding small burner in dispensing position, whole LED support is burnt compared to existing
Knot, this technology sintering is more efficient, can cure each elargol respectively, and hardening time is roughly the same, and it is integral sintered when, because respectively
The elargol hardening time of position is inconsistent, causes sintering time to increase, so this technology decreases sintering time, improves whole
A LED light preparation process efficiency；
2. the first burner head energy turned position, before curing starts, the first burner head is turned on the second burner head, avoids heat
The heat alignment dispensing position that can be flowed out from small burner head, as sintering process of the prior art, now using the technology into
Row preheating, prevents that elargol is influenced by heat the solidification effect in later stage suddenly；
3. station groove and sintering baking oven are arranged to be detachably connected, in gluing process, LED light is placed in station groove,
In sintering, station groove and LED light are put into togerther in sintering baking oven, avoiding will just put after LED light dispensing in the prior art
Put in station groove, since elargol is in colloid, security protection process needs meticulously, meanwhile, in installation course, station groove is dried in sintering
In case, there is the problem of placement inconvenience；
4. the set temperature inductor on sintering baking oven inner wall, heater is controlled by controller, oven temperature control will be sintered
System is at 150-170 DEG C, to meet the temperature process of sintering.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the structure diagram of burner in the present invention；
Fig. 3 is the sectional view of B in Fig. 2；
Fig. 4 is the partial enlarged view of part A in Fig. 1；
In figure, 1- sintering baking ovens, 10- sliding slots, the first elastic parts of 101-, 2- burners, 20- burner heads, 201- the first burner heads,
202- the second burner heads, the small burners of 203-, 21- burner bars, 210- supporting rods, 3- station grooves, 30- sliding blocks, 31- card slots, 40- electricity
Machine, 41- connecting rods, 42- bearings, 43- controllers, 50-LED lamp supports, 501- conductive substrates, 502- stents, 6- temperature inductors.
Embodiment
Technical scheme is described in further detail below in conjunction with the accompanying drawings, but protection scope of the present invention is not limited to
It is as described below.
Embodiment 1
As shown in Figs 1-4, a kind of stabilization dispensing of LED light and high-efficiency sintered integrated apparatus, including sintering baking oven 1, burner 2
And be arranged on the matched station groove 3 of burner 2, burner 2, station groove 3 inside sintering baking oven 1, burner 2 includes burner head
20th, burner bar 21, burner first 20 include first 201, second burner first 202 of the first burner and are fixed on the supporting rod of burner bar 21
210, burner first 2 includes first 201, second burner first 202 of the first burner, and the first burner first 201 is rotated around supporting rod 210, rotates
Mechanism includes motor 40, connecting rod 41, bearing 42 and controller 43, and the output shaft of motor 4 is connected with connecting rod 41,41 one end of connecting rod
It is connected with bearing 42,41 other end of connecting rod is fixed on the first burner first 201, and bearing 42 is fixed on supporting rod 210, controller
43 are fixed on 1 outer surface of sintering baking oven with motor Electricity Federation, controller 43；Second burner first 202 is fixed on burner bar 21, and second
Burner first 202 and the first burner first 201 are all hemispherical, and the radius value of the second burner first 202 is less than the half of the first burner first 201
Footpath is worth, and the second burner first 202 and the first burner first 201 are equipped with some small burners 201, position and the dispensing position of small burner 201
Put corresponding, the dispensing positional distance of each small burner 201 corresponding thereto is equal；
LED lamp holder 50 is further included, LED lamp holder 50 is detachably connected with station groove 3, and station groove 3 and sintering baking oven 1 are removable
Unload connection；1 bottom of sintering baking oven is equipped with sliding slot 10, and 3 bottom of station groove is equipped with sliding block 30, and sliding block 30 moves in sliding slot 10, sliding
10 one end of groove is arranged on the entrance of sintering baking oven 1, and 10 other end of sliding slot is arranged on to be equipped with 3 corresponding position of burner and the end
First elastic parts 101.
Embodiment 2
Further optimize on the basis of a kind of stabilization dispensing of LED light described in embodiment 1 and high-efficiency sintered integrated apparatus,
Sintering 1 inner wall of baking oven is equipped with temperature inductor 6, is equipped with the heater connected with burner 2 in sintering baking oven 1, controller 43 divides
Not with temperature inductor 6, heater Electricity Federation.Controller 43 controls heater, by temperature control in sintering baking oven 1 in 150-170
DEG C, to meet the temperature process of sintering.
Embodiment 3
Further optimize on the basis of a kind of stabilization dispensing of LED light described in embodiment 2 and high-efficiency sintered integrated apparatus,
The one side wall of sintering baking oven 1 uses glass, and glass is arranged on 1 side wall of sintering baking oven easy to observation elargol sintering situation.Side
Just the curing situation of elargol, convenient adjustment sintering process flow in time are observed.
Embodiment 4
Further optimize on the basis of a kind of stabilization dispensing of LED light described in embodiment 1 and high-efficiency sintered integrated apparatus,
LED lamp holder 50 includes conductive substrates 501 and the stent 502 being connected with conductive substrates 501, is equipped with station groove 3 and places branch
The card slot 31 of frame 502.
The operation principle of lampshade in the present invention：LED light is placed in station groove 3, motor 40 operates, and drive link 41 is revolved
Turn, so as to drive the first burner first 201 to rotate, it is covered on the second burner first 202, the first burner first 201 and second is burnt
203 position of small burner on mouth 202 does not correspond to so that the energy sprayed now out of small burner 203 is seldom, even if energy sprays
Going out will not be against dispensing position, and first 202 position of the second burner is removed in burner first 20, from the energy that it passes through just as traditional skill
It is the same that situation is sintered in art, it is convenient that dispensing in region is preheated there is no small burner 203, facilitate cured later, together
When, to ensure more preferable pre-heat effect, station groove 3 is moved back and forth, makes LED light preheating uniform, after having preheated, motor
40 operatings, drive link 41 rotate, turn to the first burner first 201 and form spherical shape burner, small burning with the second burner first 202
Mouth 203 and dispensing position correspond, and can cure each elargol respectively, and hardening time is roughly the same, and it is integral sintered when, because
The elargol hardening time of each position is inconsistent, causes sintering time to increase, so this technology decreases sintering time, improves
Whole LED light preparation process efficiency.In gluing process, LED lamp holder 50 is placed on station groove 3, dispensing is completed, is burning
When tying technique, station groove 3 is placed on the process in sintering baking oven 1, station groove 3 is put into togerther in sintering baking 1 case with LED light,
Avoiding will just be placed in station groove 3 after LED light dispensing in the prior art, and since elargol is in colloid, security protection process needs careful
Cautiously, meanwhile, in installation course, there is the problem of placement inconvenience in station groove 3 in sintering baking oven 1.
The above is only the preferred embodiment of the present invention, it should be understood that the present invention is not limited to described herein
Form, is not to be taken as the exclusion to other embodiment, and can be used for various other combinations, modification and environment, and can be at this
In the text contemplated scope, it is modified by the technology or knowledge of above-mentioned teaching or association area.And those skilled in the art institute into
Capable modifications and changes do not depart from the spirit and scope of the present invention, then all should be in the protection domain of appended claims of the present invention
It is interior.
Claims (4)
1. stabilization dispensing and the high-efficiency sintered integrated apparatus of a kind of LED light, including sintering baking oven（1）, burner（2）And with
Burner（2）Matched station groove（3）, the burner（2）, station groove（3）It is arranged on the sintering baking oven（1）Inside, it is special
Sign is：
The burner（2）Including burner head（20）, burner bar（21）, the burner head（20）Including the first burner head（201）,
Two burner heads（202）And it is fixed on burner bar（21）Supporting rod（210）, the burner head（20）Including the first burner head
（201）, the second burner head（202）, the first burner head（201）Around supporting rod（210）Rotate, rotating mechanism includes motor
（40）, connecting rod（41）, bearing（42）And controller（43）, the motor（40）Output shaft and connecting rod（41）Connection, it is described
Connecting rod（41）One end and bearing（42）Connection, connecting rod（41）The other end is fixed on the first burner head（201）On, the bearing（42）
It is fixed on supporting rod（210）On, the controller（43）With motor Electricity Federation, controller（43）It is fixed on sintering baking oven（1）Appearance
Face；The second burner head（202）It is fixed on burner bar（21）On, the second burner head（202）With the first burner head（201）All it is in
Hemispherical, the second burner head（202）Radius value be less than the first burner head（201）Radius value, the second burner head（202）With
One burner head（201）It is equipped with some small burners（201）, the small burner（201）Position it is corresponding with dispensing position, it is each small
Burner（201）Dispensing positional distance corresponding thereto is equal；
Further include LED lamp holder（50）, the LED lamp holder（50）With station groove（3）It is detachably connected, the station groove（3）
With sintering baking oven（1）It is detachably connected；The sintering baking oven（1）Bottom is equipped with sliding slot（10）, the station groove（3）Bottom is equipped with
Sliding block（30）, the sliding block（30）In sliding slot（10）Interior movement, the sliding slot（10）One end is arranged on sintering baking oven（1）Enter
Mouthful, sliding slot（10）The other end is arranged on and burner（3）The corresponding position and end is equipped with the first elastic parts（101）.
2. stabilization dispensing and the high-efficiency sintered integrated apparatus of a kind of LED light according to claim 1, its feature exist
In：The sintering baking oven（1）Inner wall is equipped with temperature inductor（6）, sinter baking oven（1）It is interior to be equipped with and the burner（2）Connection
Heater, the controller（43）Respectively with temperature inductor（6）, heater Electricity Federation.
3. stabilization dispensing and the high-efficiency sintered integrated apparatus of a kind of LED light according to claim 2, its feature exist
In：The sintering baking oven（1）One side wall use glass, the glass is arranged on to be dried easy to the sintering of observation elargol sintering situation
Case（1）On side wall.
4. stabilization dispensing and the high-efficiency sintered integrated apparatus of a kind of LED light according to claim 1, its feature exist
In：The LED lamp holder（50）Including conductive substrates（501）And with the conductive substrates（501）The stent of connection（502）,
The station groove（3）Interior be equipped with places stent（502）Card slot（31）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711309690.9A CN107910429A (en) | 2017-12-11 | 2017-12-11 | A kind of stabilization dispensing of LED light and high-efficiency sintered integrated apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711309690.9A CN107910429A (en) | 2017-12-11 | 2017-12-11 | A kind of stabilization dispensing of LED light and high-efficiency sintered integrated apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107910429A true CN107910429A (en) | 2018-04-13 |
Family
ID=61865003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711309690.9A Withdrawn CN107910429A (en) | 2017-12-11 | 2017-12-11 | A kind of stabilization dispensing of LED light and high-efficiency sintered integrated apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107910429A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108620296A (en) * | 2018-07-08 | 2018-10-09 | 苏醒 | LED light point glue equipment easy to use |
| CN111649329A (en) * | 2020-05-27 | 2020-09-11 | 二重集团（镇江）重型装备厂有限责任公司 | Heating tool for inner wall of pressure vessel barrel |
-
2017
- 2017-12-11 CN CN201711309690.9A patent/CN107910429A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108620296A (en) * | 2018-07-08 | 2018-10-09 | 苏醒 | LED light point glue equipment easy to use |
| CN111649329A (en) * | 2020-05-27 | 2020-09-11 | 二重集团（镇江）重型装备厂有限责任公司 | Heating tool for inner wall of pressure vessel barrel |
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Application publication date: 20180413 |
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