CN209647790U - A kind of double track refluxing unit that welding effect is good - Google Patents
A kind of double track refluxing unit that welding effect is good Download PDFInfo
- Publication number
- CN209647790U CN209647790U CN201920096009.5U CN201920096009U CN209647790U CN 209647790 U CN209647790 U CN 209647790U CN 201920096009 U CN201920096009 U CN 201920096009U CN 209647790 U CN209647790 U CN 209647790U
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- welding
- incubator
- preheating cabinet
- heater
- main body
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- 238000003466 welding Methods 0.000 title claims abstract description 59
- 230000000694 effects Effects 0.000 title claims abstract description 16
- 238000010992 reflux Methods 0.000 title claims abstract description 16
- 238000010792 warming Methods 0.000 claims abstract description 29
- 230000001012 protector Effects 0.000 claims description 7
- 238000009423 ventilation Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims 1
- 238000005476 soldering Methods 0.000 abstract description 18
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 abstract description 3
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 abstract description 3
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 abstract description 3
- 229910000679 solder Inorganic materials 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
Landscapes
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
The utility model discloses a kind of good double track refluxing units of welding effect, including preheating cabinet, incubator, warming box, welding case and apparatus main body, preheating cabinet is located at one end inside apparatus main body, welding case is located at the other end inside apparatus main body, incubator is located at the side of preheating cabinet, warming box is located at side of the incubator far from preheating cabinet, the warm inductor of the first heat is provided at the top of preheating cabinet, incubator and warming box, the centre of apparatus main body is provided with conveyer belt, and apparatus main body is provided with console close to one end of preheating cabinet.The utility model can carry out soldering to circuit board simultaneously by single track and double track, and the position of jet syringe needle on various boards adjustment fixing plate can be passed through, effectively the relevant position of circuit board can be welded, by jet syringe needle to spot welding, welding is accurate, it not will cause rosin joint, overall structure is simple, practical.
Description
Technical field
The utility model relates to electroplating equipment wielding machine field, in particular to the good double track refluxing unit of a kind of welding effect.
Background technique
Reflow Soldering is the cream dress solder allocated in advance on printed board pad by refuse, realizes surface-assembled
Component welding end or pin and the room machine of printed board pad and the solder of electrical connection.Reflow Soldering is by thermal current butt welding point
Effect, gelatinous solder flux carries out the welding that physical reactions reach SMD under certain high temperature gas flow；Why " Reflow Soldering " is cried
It is because gas, which generates high temperature in welding machine internal circulation flow, reaches welding purpose, the working principle double track Reflow Soldering of double track Reflow Soldering
Furnace can be such that the production capacity of single double track furnace improves twice by two circuit boards of parallel processing simultaneously.At present, most circuit board system
It makes quotient to be only limitted to handle the similar circuit board of identical or weight in each track, even possesses the double track of separate track speed
Double speed reflow soldering makes the device for handling the circuit board of two pieces of difference simultaneously have complicated assembly and treatment process, equipment making
Process is complicated, expensive, and related technical personnel lack, and causes many circuit board fabrication quotient to select single track solder reflow device, leads
It causes overall operation efficiency slow, is not easy meet demand amount.
Utility model content
The technical problems to be solved in the utility model is to overcome the deficiencies of existing technologies, and provides a kind of welding effect good pair
Rail refluxing unit can carry out soldering to circuit board simultaneously by single track and double track, and can pass through various boards tune
The position for saving jet syringe needle in fixed plate, can effectively weld the relevant position of circuit board.
In order to solve the above-mentioned technical problem, the utility model provides the following technical solution:
A kind of good double track refluxing unit of welding effect of the utility model, including preheating cabinet, incubator, warming box, welding
Case and apparatus main body, the preheating cabinet are located at one end inside apparatus main body, and the welding case is located at another inside apparatus main body
One end, the incubator are located at the side of preheating cabinet, and the warming box is located at side of the incubator far from preheating cabinet, the preheating
The warm inductor of the first heat, the side plate of the welding case and the top of front and back end plate are provided at the top of case, incubator and warming box
Portion be provided with it is several enter air holes, the welding case two sides are provided with the second warm inductor of heat, the bottom end inside the welding case
It is provided with fixed net, the top of the fixed net is provided with fixed plate, and the centre of the fixed plate is provided with several jet syringe needles,
And jet syringe needle is provided with primary heater at the top of the fixed plate simultaneously through the fixed plate and the fixed net,
It is provided with secondary heater at the top of the primary heater, several protectors, institute are provided at the top of the secondary heater
The side plate interior sides face that protector is located at welding case is stated, the centre of the welding case is provided with pressure aerofoil, the edge of the pressure aerofoil
It is provided with sealing ring, the upper surface of the pressure aerofoil offers several ventilation holes, and the bottom of the pressure aerofoil is provided with closed plate,
Slide bar is provided at the top of the pressure aerofoil, through the headboard of welding case, the top of the slide bar is provided with the slide bar
Motor, the slide bar are internally provided with drive rod, and the lateral surface of the slide bar is provided with driver, and driver is located at welding
The top of case, the centre of described device main body is provided with conveyer belt, and conveyer belt, through apparatus main body, described device main body is leaned on
One end of nearly preheating cabinet is provided with console.
As a kind of optimal technical scheme of the utility model, the low side plate of the preheating cabinet, incubator and warming box is equal
Several exhaust vents are offered, the bottom end inside the preheating cabinet, incubator and warming box is provided with third heater, described pre-
The headboard of hot tank, incubator and warming box is provided with hair dryer, and hair dryer is through preheating cabinet, incubator and warming box
Headboard.
As a kind of optimal technical scheme of the utility model, the top of the drive rod, which is connected to the motor, to be connect, the biography
The bottom end of lever is connected with closed plate.
As a kind of optimal technical scheme of the utility model, temperature that the third heater in the preheating cabinet is heated
Range is 0-100 DEG C, be the temperature range that is heated of the third heater in incubator is 100-150 DEG C, in the warming box
The temperature range that is heated of third heater be 150-183 DEG C.
As a kind of optimal technical scheme of the utility model, the temperature range that the primary heater is heated is 180-
230 DEG C, the temperature range that the secondary heater is heated is 150-190 DEG C.
As a kind of optimal technical scheme of the utility model, the fixed plate is by high molecular weight plastic material and fireproof agent
It is made by mixing, thickness is between 0.8-2cm.
As a kind of optimal technical scheme of the utility model, the motor, driver, the first heat warm inductor, second
Hot temperature inductor, primary heater, secondary heater and third heater are electrically connected with console.
As a kind of optimal technical scheme of the utility model, the warm inductor of the second heat is corresponding with air holes is entered.
Compared with prior art, the beneficial effects of the utility model are as follows:
Soldering can be carried out to circuit board simultaneously by single track and double track in the utility model, and difference can be passed through
The position of jet syringe needle on circuit board adjustment fixing plate can effectively weld the relevant position of circuit board, for double track
Jet syringe needle in fixed plate only need to be gone out distance to a declared goal in the intermediate isolating of fixed plate by welding circuit board, so that it may to double track circuit
Plate carries out soldering, and by jet syringe needle to spot welding, welding is accurate, not will cause rosin joint, overall structure is simple, practicability
By force.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this
Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.In the accompanying drawings:
Fig. 1 is the section structural schematic diagram of the utility model；
Fig. 2 is the section structural schematic diagram of the utility model welding case；
Fig. 3 is the section structural schematic diagram of the utility model preheating cabinet；
Fig. 4 is the high view structural schematic diagram of the utility model pressure aerofoil；
Fig. 5 is the positive structure schematic of the utility model fixed plate；
In figure: 1, preheating cabinet；2, incubator；3, warming box；4, case is welded；5, apparatus main body；6, the first hot warming is answered
Device；7, enter air holes；8, the warm inductor of the second heat；9, fixed net；10, fixed plate；11, jet syringe needle；12, primary heater；13,
Secondary heater；14, protector；15, aerofoil is pressed；16, sealing ring；17, ventilation hole；18, closed plate；19, slide bar；20, motor；
21, drive rod；22, driver；23, conveyer belt；24, console；25, exhaust vent；26, third heater；27, hair dryer.
Specific embodiment
It is illustrated below in conjunction with preferred embodiment of the attached drawing to the utility model, it should be understood that described herein excellent
It selects embodiment to be only used for describing and explaining the present invention, is not used to limit the utility model.
Wherein identical label all refers to identical component in attached drawing.
In addition, if the detailed description of known technology for show the utility model be characterized in it is unnecessary, then by it
It omits.It should be noted that term " setting ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, it is also possible to
It is detachably connected, or is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also lead to
It crosses intermediary to be indirectly connected, can be the connection inside two elements.It for the ordinary skill in the art, can be with
Concrete condition understands the concrete meaning of above-mentioned term in the present invention, in addition, term " first ", " second " and " third " etc. are only used
It is described in distinguishing, is not understood to indicate or imply relative importance.
Embodiment 1
As shown in Figs. 1-5, the utility model provides a kind of double track refluxing unit that welding effect is good, including preheating cabinet 1, guarantor
Incubator 2, warming box 3, welding case 4 and apparatus main body 5, preheating cabinet 1 are located at one end inside apparatus main body 5, and welding case 4 is located at dress
The other end inside main body 5 is set, incubator 2 is located at the side of preheating cabinet 1, and warming box 3 is located at incubator 2 far from preheating cabinet 1
Side, the top of preheating cabinet 1, incubator 2 and warming box 3 are provided with the warm inductor 6 of the first heat, weld the side plate of case 4 with before
Be provided at the top of end plate it is several enter air holes 7, welding 4 two sides of case are provided with the second warm inductor 8 of heat, weld inside case 4
Bottom end be provided with fixed net 9, the top of fixed net 9 is provided with fixed plate 10, and the centre of fixed plate 10 is provided with several jets
Syringe needle 11, and jet syringe needle 11, simultaneously through fixed plate 10 and fixed net 9, the top of fixed plate 10 is provided with the first heating
Device 12, the top of primary heater 12 are provided with secondary heater 13, and the top of secondary heater 13 is provided with several protectors
14, protector 14 is located at the side plate interior sides face of welding case 4, and the centre of welding case 4 is provided with pressure aerofoil 15, presses the side of aerofoil 15
Edge is provided with sealing ring 16, and the upper surface of pressure aerofoil 15 offers several ventilation holes 17, and the bottom of pressure aerofoil 15, which is provided with, closes wind
Plate 18, the top of pressure aerofoil 15 are provided with slide bar 19, headboard of the slide bar 19 through welding case 4, the top setting of slide bar 19
There is motor 20, slide bar 19 is internally provided with drive rod 21, and the lateral surface of slide bar 19 is provided with driver 22, and driver 22
In the top of welding case 4, the centre of apparatus main body 5 is provided with conveyer belt 23, and conveyer belt 23 is through apparatus main body 5, device
Main body 5 is provided with console 24 close to one end of preheating cabinet 1.
Further, the low side plate of preheating cabinet 1, incubator 2 and warming box 3 offers several exhaust vents 25, preheating cabinet
1, the bottom end inside incubator 2 and warming box 3 is provided with third heater 26, the top of preheating cabinet 1, incubator 2 and warming box 3
End plate is provided with hair dryer 27, and hair dryer 27 is through preheating cabinet 1, the headboard of incubator 2 and warming box 3, to conveyer belt
Circuit board on 23 carries out preheating and soldering paste sofening treatment.
The top of drive rod 21 is connected with motor 20, and the bottom end of drive rod 21 is connected with closed plate 18, and motor 20 is controlled
The rotation of drive rod 21 processed is to control the rotation of closed plate 18.
The temperature range that third heater 26 in preheating cabinet 1 is heated is 0-100 DEG C, is carried out at preheating to circuit board
Reason；Be the temperature range that is heated of the third heater 26 in incubator 2 it is 100-150 DEG C, circuit board is slowly risen
Temperature processing；The temperature range that third heater 26 in warming box 3 is heated is 150-183 DEG C, by the solder joint temperature on circuit board
Degree reaches thawing point of proximity, facilitates welding 4 soldering of case.
The temperature range that primary heater 12 is heated is 180-230 DEG C, the temperature range that secondary heater 13 is heated
It is 150-190 DEG C, air is heated, the solder joint of circuit board is welded.
Fixed plate 10 is made by mixing by high molecular weight plastic material and fireproof agent, and thickness is between 0.8-2cm, side
Just jet syringe needle 11 passes through, can high temperature resistant.
The warm inductor 8 of warm the 6, second heat of inductor of motor 20, the 22, first heat of driver, primary heater 12, second heat
Device 13 and third heater 26 are electrically connected with console 24, control motor 20, driver the 22, first heat temperature by console
The operation of the 6, second heat of inductor warm inductor 8, primary heater 12, secondary heater 13 and third heater 26.
The warm inductor 8 of second heat is corresponding with air holes 7 is entered, and measures air holes 7 by the warm inductor 8 of the second heat
Air themperature.
Specifically, the bond pad locations of several 11 corresponding circuits plates of jet syringe needle are through fixed plate 10；Fixed plate 10 is passed through
Jet syringe needle 11 is extracted after penetrating, and the perforation of formation can heal automatically；The warm inductor 6 of first heat is measured into 27 air of hair dryer
Temperature make the sky by third heater 26 by console 24 to thinking that corresponding third heater 26 carries out temperature control
Gas reaches assigned temperature；8 pairs of the warm inductor of second heat is detected by entering the temperature of the air of air holes 7, passes through console 24
Computer heating control is carried out to primary heater 12 and secondary heater 13, makes to specify weldering by the air themperature of jet syringe needle 11
Jointing temp；Driver 22 can control slide bar 19 and move up and down, so that pressure aerofoil 15 be pushed to move up and down；Motor 20 controls closed plate
18 rotation seals closed plate 18 by ventilation hole 17, and aerofoil 15 is pressed to decline, and is that the air of 15 lower section of aerofoil is pressed to add by first
Hot device 12 and secondary heater 13 heat, and hot-air blows on the solder joint on circuit board by jet syringe needle 11；When in use, will
Circuit board is placed on as required on conveyer belt 23, is transmitted circuit board from left to right by conveyer belt 23, circuit board enters preheating cabinet 1
When, the solvent and gas in soldering paste are evaporated, meanwhile, the scaling powder wet pads, component end and pin, soldering paste in soldering paste are soft
Change, covers pad at slump, and pad, component's feet are isolated with oxygen, when circuit board enters incubator 2 and warming box 3
When, preheat circuit board and component adequately, to prevent circuit board abruptly enter welding high-temperature region and damage circuit board and
Component, when circuit board enters welding case 4,18 enclosed ventilation hole 17 of closed plate, pressure aerofoil 15 is pressed down against air, by the
The air that one heater 12 and secondary heater 13 heat is sprayed on circuit board designated position, temperature is rapid by jet syringe needle 11
Rising makes soldering paste reach molten state, and liquid solder soaks the pad of circuit board, component end and pin, spreads, cross flow
Or reflux is mixed to form solder joints, the last communicated band 23 of circuit board sends out equipment；Because several jet syringe needles 11 are solid
It is that can change position on fixed board 10, is the circuit board of solderable double track transmission by midfeather distance to a declared goal.
The utility model can carry out soldering to circuit board simultaneously by single track and double track, and can pass through different electricity
The position of jet syringe needle 11 on road plate adjustment fixing plate 10, can effectively weld the relevant position of circuit board, for double
Jet syringe needle 11 in fixed plate 10 only need to be gone out distance to a declared goal in the intermediate isolating of fixed plate 10 by rail welding circuit board, so that it may right
Double track circuit board carries out soldering, and by 11, jet needle to spot welding, welding accurately, not will cause rosin joint, overall structure
Simply, practical.
Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic
It is equivalently replaced.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (8)
1. a kind of good double track refluxing unit of welding effect, including preheating cabinet (1), incubator (2), warming box (3), welding case
(4) and apparatus main body (5), which is characterized in that the preheating cabinet (1) is located at the internal one end of apparatus main body (5), the welding case
(4) it is located at apparatus main body (5) internal other end, the incubator (2) is located at the side of preheating cabinet (1), the warming box (3)
Positioned at the side of incubator (2) separate preheating cabinet (1), it is all provided at the top of the preheating cabinet (1), incubator (2) and warming box (3)
Be equipped with the warm inductor (6) of the first heat, be provided at the top of the side plate and front and back end plate of welding case (4) it is several enter air holes
(7), welding case (4) two sides are provided with the warm inductor (8) of the second heat, and the internal bottom end of welding case (4) is provided with solid
Determine net (9), is provided with fixed plate (10) at the top of the fixed net (9), the centre of the fixed plate (10) is provided with several sprays
Air tube head (11), and jet syringe needle (11) is simultaneously through the fixed plate (10) and the fixed net (9), the fixed plate
(10) it is provided at the top of primary heater (12), is provided with secondary heater (13) at the top of the primary heater (12),
It is provided with several protectors (14) at the top of the secondary heater (13), the protector (14) is located at the side of welding case (4)
Plate medial surface, the centre of welding case (4) are provided with pressure aerofoil (15), and the edge of pressure aerofoil (15) is provided with sealing ring
(16), the upper surface of pressure aerofoil (15) offers several ventilation holes (17), and the bottom of pressure aerofoil (15), which is provided with, to be closed
Aerofoil (18) is provided with slide bar (19) at the top of the pressure aerofoil (15), and the slide bar (19) is through the top of welding case (4)
The top of plate, the slide bar (19) is provided with motor (20), and the slide bar (19) is internally provided with drive rod (21), the cunning
The lateral surface of bar (19) is provided with driver (22), and driver (22) is located at the top of welding case (4), described device main body
(5) centre is provided with conveyer belt (23), and conveyer belt (23), through apparatus main body (5), described device main body (5) is close to pre-
One end of hot tank (1) is provided with console (24).
2. a kind of good double track refluxing unit of welding effect according to claim 1, which is characterized in that the preheating cabinet
(1), the low side plate of incubator (2) and warming box (3) offers several exhaust vents (25), the preheating cabinet (1), incubator
(2) it is provided with third heater (26) with the bottom end of warming box (3) inside, the preheating cabinet (1), incubator (2) and heating
The headboard of case (3) is provided with hair dryer (27), and hair dryer (27) is through preheating cabinet (1), incubator (2) and warming box
(3) headboard.
3. a kind of good double track refluxing unit of welding effect according to claim 1, which is characterized in that the drive rod
(21) top is connected with motor (20), and the bottom end of the drive rod (21) is connected with closed plate (18).
4. a kind of good double track refluxing unit of welding effect according to claim 2, which is characterized in that the preheating cabinet
(1) temperature range that the third heater (26) in is heated is 0-100 DEG C, is the third heater (26) in incubator (2)
The temperature range heated is 100-150 DEG C, and the temperature range that the third heater (26) in the warming box (3) is heated is
150-183℃。
5. a kind of good double track refluxing unit of welding effect according to claim 1, which is characterized in that first heating
The temperature range that device (12) is heated is 180-230 DEG C, and the temperature range that the secondary heater (13) is heated is 150-190
℃。
6. a kind of good double track refluxing unit of welding effect according to claim 1, which is characterized in that the fixed plate
It (10) is to be made by mixing by high molecular weight plastic material and fireproof agent, thickness is between 0.8-2cm.
7. a kind of good double track refluxing unit of welding effect according to claim 2, which is characterized in that the motor
(20), driver (22), the warm inductor (6) of the first heat, the warm inductor (8) of the second heat, primary heater (12), secondary heater
(13) it is electrically connected with console (24) with third heater (26).
8. a kind of good double track refluxing unit of welding effect according to claim 1, which is characterized in that the second heat temperature
Inductor (8) is corresponding with air holes (7) are entered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920096009.5U CN209647790U (en) | 2019-01-21 | 2019-01-21 | A kind of double track refluxing unit that welding effect is good |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920096009.5U CN209647790U (en) | 2019-01-21 | 2019-01-21 | A kind of double track refluxing unit that welding effect is good |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209647790U true CN209647790U (en) | 2019-11-19 |
Family
ID=68521733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920096009.5U Active CN209647790U (en) | 2019-01-21 | 2019-01-21 | A kind of double track refluxing unit that welding effect is good |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209647790U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11589488B1 (en) * | 2021-07-28 | 2023-02-21 | Ableprint Iechnology Co., Ltd. | Warpage suppressing reflow oven |
-
2019
- 2019-01-21 CN CN201920096009.5U patent/CN209647790U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11589488B1 (en) * | 2021-07-28 | 2023-02-21 | Ableprint Iechnology Co., Ltd. | Warpage suppressing reflow oven |
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