CN107838516B - Welding mechanism of vacuum welding furnace - Google Patents

Welding mechanism of vacuum welding furnace Download PDF

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Publication number
CN107838516B
CN107838516B CN201711475755.7A CN201711475755A CN107838516B CN 107838516 B CN107838516 B CN 107838516B CN 201711475755 A CN201711475755 A CN 201711475755A CN 107838516 B CN107838516 B CN 107838516B
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China
Prior art keywords
welding
negative pressure
heating
plate
chamber
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CN201711475755.7A
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CN107838516A (en
Inventor
李向东
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Shandong Caiju Electronic Technology Co ltd
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Shandong Caiju Electronic Technology Co ltd
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Application filed by Shandong Caiju Electronic Technology Co ltd filed Critical Shandong Caiju Electronic Technology Co ltd
Priority to CN201711475755.7A priority Critical patent/CN107838516B/en
Publication of CN107838516A publication Critical patent/CN107838516A/en
Priority to DE112018006659.2T priority patent/DE112018006659T5/en
Priority to PCT/CN2018/088224 priority patent/WO2019128065A1/en
Priority to JP2020536686A priority patent/JP7175987B2/en
Priority to DE202018006507.2U priority patent/DE202018006507U1/en
Application granted granted Critical
Publication of CN107838516B publication Critical patent/CN107838516B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00Soldering, e.g. brazing, or unsoldering
    • B23K1/008Soldering within a furnace
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K3/00Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K3/00Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
    • B23K3/08Auxiliary devices therefor

Abstract

A welding mechanism of a vacuum welding furnace belongs to the technical field of vacuum welding. The method is characterized in that: including welding room (18) and the bell of welding room (18) upside, be provided with the welding chamber between bell (4) and welding room (18), welding room (18) lower part is equipped with welding bench (20), one side that welding bench (20) are close to the feed end is the zone of heating, one side that welding bench (20) are close to the discharge end is the cooling zone, the zone of heating is close to the one end upside of cooling zone is provided with takes out negative pressure module (9), take out negative pressure module (9) liftable install on bell (4), take out negative pressure module (9) bottom and zone of heating surround into inclosed negative pressure chamber, be provided with the protection gas intake pipe on welding room (18) or the bell (4). The welding mechanism of the vacuum welding furnace can enable the material sheet to be welded in the negative pressure cavity rapidly, and can also avoid the reaction of the material sheet and oxygen in the heating process.

Description

Welding mechanism of vacuum welding furnace
Technical Field
A welding mechanism of a vacuum welding furnace belongs to the technical field of vacuum welding.
Background
When producing electronic components such as diodes, triodes, thyristors or bridges, chips need to be welded between an upper material sheet and a lower material sheet, and the process is called as lamination. The specific working process of the lamination is as follows: firstly, the upper side of a blanking piece is required to be coated with solder paste, a chip is placed at a specific position of the blanking piece, then the upper piece with the solder paste coated on the lower side is stacked on the upper side of the blanking piece, a top cover of a welding die is covered on a bottom plate of the welding die, and finally the welding die is sent into a welding furnace for welding. Welding of the webs needs to be performed in a vacuum oven.
The Chinese patent application No. 201420820418.2 discloses a continuous vacuum welding furnace, which has the following technical problems in the use process:
(1) The machine is only provided with a heating zone matched with the vacuum treatment device, the solder paste is melted and has a welding effect by heating the material sheet to a certain temperature, the heating time of the material sheet is long due to the fact that the heating zone is arranged on the upper cover, the material sheet is heated by radiation, the heat transfer efficiency is low, the heating time of the material sheet is further increased, and the welding efficiency is low;
(2) The temperature of the welded material sheet is too high, the cooling speed is low, the material sheet is easy to oxidize after being moved out of the vacuum treatment device, and the temperature of the material sheet moved out of the machine table is still too high, so that workers cannot directly treat the material sheet;
(3) The driving mechanism carries the tablet through the both ends of tablet when carrying the tablet, and the tablet after the heating is softer, appears the tablet deformation and break away from driving mechanism's problem very easily when bearing the tablet through both ends, and work is very unstable.
Disclosure of Invention
The utility model aims to solve the technical problems that: overcomes the defects of the prior art, and provides a welding mechanism of a vacuum welding furnace, which can gradually heat the material sheets, has high welding speed and avoids the oxidation of the material sheets.
The technical scheme adopted for solving the technical problems is as follows: this welding mechanism of vacuum welding stove, its characterized in that: including welding room and the bell of welding room upside, be provided with the welding chamber between bell and the welding room, the welding room lower part is equipped with the welding bench, and one side that the welding bench is close to the feed end is the zone of heating, and one side that the welding bench is close to the discharge end is the cooling zone, and the zone of heating is close to the one end upside of cooling zone and is provided with the negative pressure module of taking out, takes out the liftable of negative pressure module and installs on the stove top, takes out negative pressure module bottom and the zone of heating and encloses into inclosed negative pressure chamber, is provided with the shielding gas intake pipe on welding room or the bell.
Preferably, the welding table comprises a plurality of heating plates and a plurality of cooling plates, the heating plates are spliced into a heating area, and the cooling plates are spliced into a cooling area.
Preferably, electric heating pipes are symmetrically arranged on two sides of each heating plate, a sensor mounting hole is formed in the middle of each heating plate, the sensor mounting holes are blind holes formed between the two electric heating pipes, and a temperature sensor is arranged in each sensor mounting hole.
Preferably, water inlet channels are symmetrically arranged on two sides of the cooling plate, and at least one end of the cooling plate is provided with a water drainage channel communicated with the two water inlet channels.
Preferably, the lower side of the welding chamber is provided with a liquid collecting cover, two sides of the bottom of the liquid collecting cover are gradually inclined downwards from the side part to the middle part, and a liquid collecting cover liquid outlet pipe is arranged at the bottom of the liquid collecting cover.
Preferably, the shielding gas inlet pipe is a main nitrogen inlet pipe, the main nitrogen inlet pipes are arranged at two ends of the furnace cover, the auxiliary nitrogen inlet pipes are symmetrically arranged at two sides of the middle of the furnace cover, and the auxiliary nitrogen inlet pipes are communicated with the welding chamber.
Preferably, the lower part bilateral symmetry of bell be provided with the air inlet board, the upper portion of air inlet board is equipped with the open air inlet in upside to enclose into the inlet chamber with the bell, the interval is provided with a plurality of fumaroles with air inlet and welding chamber intercommunication on the air inlet board, vice nitrogen gas intake pipe and air inlet intercommunication.
Preferably, the negative pressure pumping module comprises a sealing plate and a negative pressure pumping lifting cylinder, wherein the sealing plate is arranged on the upper side of the heating zone and is parallel to the heating zone, a closed negative pressure cavity is formed by surrounding the bottom of the sealing plate and the heating zone, and the negative pressure cavity is connected with a negative pressure pumping pipe.
Preferably, the sealing plate is arranged at the lower side of the furnace cover, the negative pressure pumping lifting cylinder is arranged at the upper side of the furnace cover, a piston rod of the negative pressure pumping lifting cylinder is connected with the sealing plate through a connecting pipe, and the connecting pipe is used for communicating the negative pressure cavity with the negative pressure pumping pipe.
Preferably, the welding device further comprises a purification module, wherein the air inlet end and the air outlet end of the purification module are communicated with the welding chamber.
Preferably, the purification module comprises a purification box, a coil pipe and a filter screen, wherein the coil pipe and the filter screen are arranged in the purification box, the air inlet end and the air outlet end are respectively arranged on two sides of the purification box, the filter screen is close to the air outlet end and seals the air outlet end, circulating cooling liquid is filled in the coil pipe, and a fan is arranged between the air outlet end of the purification box and the welding chamber.
Preferably, the purification module further comprises fins arranged in the purification box.
Compared with the prior art, the utility model has the following beneficial effects:
1. the heating zone of the welding mechanism of the vacuum welding furnace can heat the material sheets, so that the material sheets can be welded quickly in the negative pressure cavity, the welding chamber is filled with the shielding gas, the material sheets can be prevented from reacting with oxygen in the heating process, the cooling zone can cool the material sheets, the material sheets moving out of the welding chamber are low in temperature, the material sheets are prevented from being oxidized, the welded material sheets are convenient to process in time, the material sheets are directly contacted with the heating zone or the cooling zone, heating and cooling are realized in a heat conduction mode, and compared with a radiation heating mode, the heating speed is greatly improved, the material sheets can be heated up and cooled down quickly, and the consumption of energy is reduced.
2. The heating area is spliced into to the polylith hot plate, and the cooling area is spliced into to the polylith cooling plate to can make the welding indoor hold polylith piece simultaneously, the heating area heats polylith tablet simultaneously, makes the tablet can reach welding temperature fast, has improved welding speed.
3. All be equipped with electric heating pipe and temperature sensor on every hot plate, make every hot plate realize independent temperature control to can progressively heat the tablet in the tablet handling, avoid the too fast material piece deformation that leads to of heating, still avoided the too fast solder paste that leads to of heating to melt and flow, lead to appearing the defective products.
4. Every cooling plate is last all to be provided with inlet channel and outlet channel, has realized progressively cooling to the tablet, avoids the cooling to lead to the solder paste after solidifying to appear the crackle too fast, leads to chip and tablet contact failure, appears the disqualified product, also can avoid the tablet to take place to warp.
5. The liquid collecting cover can discharge liquid formed by condensing the cooling area through a liquid outlet pipe of the liquid collecting cover.
6. The main nitrogen gas intake pipe is equipped with at the both ends of bell, and bell middle part bilateral symmetry is equipped with vice nitrogen gas intake pipe to can guarantee that nitrogen gas is full of the welding room fast, the preparation time before the welding is short, convenient to use.
7. The auxiliary nitrogen gas inlet pipe sprays nitrogen gas into the welding chamber uniformly through the air inlet plate, so that air in the welding chamber can be completely emptied, and the heated material sheet and oxygen are prevented from reacting.
8. The sealing plate and the heating area are surrounded to form a negative pressure cavity, and the negative pressure pumping lifting cylinder can drive the sealing plate to lift, so that the material sheet can conveniently move in or out of the negative pressure cavity.
9. The negative pressure pumping lifting cylinder is connected with the sealing plate through the connecting pipe and drives the sealing plate to lift, and the negative pressure pumping pipe is communicated with the negative pressure cavity through the connecting pipe, so that the installation connection of the sealing plate is facilitated, and the negative pressure pumping of the negative pressure cavity is also facilitated.
10. The purification module can extract the shielding gas in the welding chamber and remove the welding oil vapor in the shielding gas, so that the phenomenon that the welding of the material sheets is influenced due to excessive welding oil vapor generated by heating the solder paste is avoided.
11. The coil pipe exchanges heat with the extracted shielding gas through the cooling liquid and reduces the temperature of the shielding gas, so that the welding oil is liquefied, and then the shielding gas is filtered through the filter screen, so that the welding oil is left on the filter screen, and the separation of the welding oil and the shielding gas is realized.
12. The fins can increase the heat exchange area of the cooling liquid and the shielding gas, so that the shielding gas is cooled down rapidly, and the welding oil in the shielding gas can be removed more thoroughly.
Drawings
Fig. 1 is a schematic perspective view of a vacuum welding furnace with a furnace cover removed.
Fig. 2 is a partial enlarged view at a in fig. 1.
Fig. 3 is an installation schematic diagram of the electric putter.
Fig. 4 is a schematic perspective view of a welding station.
Fig. 5 is a right-hand schematic view of the welding station.
Fig. 6 is a schematic top cross-sectional view of a heating plate.
Fig. 7 is a schematic top cross-sectional view of a cooling plate.
Fig. 8 is a schematic front cross-sectional view of a weld chamber mount.
Fig. 9 is a schematic front cross-sectional view of the mounting pin.
Fig. 10 is a schematic perspective view of the furnace cover.
FIG. 11 is a schematic view in front cross-section of a furnace cover.
Fig. 12 is a partial enlarged view at B in fig. 11.
Fig. 13 is a schematic front sectional view of an intake plate.
Fig. 14 is a schematic front view of the negative pressure pumping module.
Fig. 15 is a schematic perspective view of a vacuum welding furnace.
Fig. 16 is a schematic perspective view of the conveyance mechanism.
Fig. 17 is a schematic front view of the conveyance mechanism.
Fig. 18 is a schematic perspective view of a welding oil purification module.
Fig. 19 is a schematic front cross-sectional view of a purification module.
In the figure: 1. frame 2, handling mechanism 3, furnace cover cylinder 4, furnace cover 5, main nitrogen intake pipe 6, guide cap 7, purge intake pipe 8, purge outlet pipe 9, negative pressure suction module 10, connecting arm 11, swing arm 12, mounting arm 13, connecting rod 14, furnace cover mounting plate 1401, mounting port 15, gas cap 16, sub nitrogen intake pipe 17, intake plate 1701, intake 1702, gas injection hole 18, welding chamber 19, discharge table 1901, discharge table relief port 20, welding table 21, feed table 2101, feed table relief port 22, mounting plate 23, adjusting spring 24, handling rod 25, sealing sleeve 26, end cap 2601, handling port 2602, baffle mounting groove 27, baffle 28, cooling plate 2801, cooling plate relief port 2802, intake passage 2803, drain passage 2804, cooling plate mounting hole 29 the water inlet pipe 30, the heating plate 3001, the heating plate relief port 3002, the electric heating tube mounting hole 3003, the sensor mounting hole 3004, the heating plate mounting hole 31, the electric heating tube 32, the temperature sensor 33, the liquid collecting cover 3301, the liquid collecting cover liquid outlet pipe 34, the negative pressure suction mounting frame 35, the negative pressure suction lifting cylinder 36, the sealing plate 37, the connecting pipe 38, the connecting plate 39, the mounting pin 3901, the threaded hole 40, the welding chamber mounting frame 4001, the fixing portion 4002, the stepped hole 41, the translation plate 42, the opening and closing mounting rod 43, the opening and closing guide plate 44, the opening and closing guide wheel 45, the transportation mounting arm 46, the transportation lifting cylinder 47, the lifting guide frame 48, the lifting guide block 49, the translation frame 50, the translation frame guide rail 51, the translation plate guide rail 52, the transportation mounting plate 53, the translation motor 54, the translation motor mounting frame 55, the carrying and moving frame 56, the opening and closing moving frame 57, the opening and closing motor mounting frame 58, the opening and closing motor 59, the purifying module 60, the oil supply tank 61, the purifying tank 62, the purifying tank air inlet pipe 63, the filter screen mounting tank 64, the filter screen 65, the fan 66, the welding oil collecting barrel 67, the coil pipe 68, the fin 69 and the electric push rod.
Detailed Description
Fig. 1 to 19 are preferred embodiments of the present utility model, and the present utility model is further described with reference to fig. 1 to 19.
The utility model provides a welding mechanism of vacuum welding stove, including welding chamber 18 and the bell of welding chamber 18 upside, be provided with the welding chamber between bell 4 and the welding chamber 18, welding chamber 18 lower part is equipped with welding bench 20, one side that welding bench 20 is close to the feed end is the zone of heating, one side that welding bench 20 is close to the discharge end is the cooling zone, the zone of heating is close to the one end upside of cooling zone is provided with takes out negative pressure module 9, take out negative pressure module 9 liftable and install on bell 4, take out negative pressure module 9 bottom and the zone of heating surround into inclosed negative pressure chamber, be provided with the shielding gas intake pipe on welding chamber 18 or the bell 4. The heating zone of the welding mechanism of the vacuum welding furnace can heat the material sheets, so that the material sheets can be welded quickly in the negative pressure cavity, the welding chamber 18 is filled with the protective gas, the material sheets can be prevented from reacting with oxygen in the heating process, the cooling zone can cool the material sheets, the material sheets moving out of the welding chamber 18 are low in temperature, the material sheets are prevented from being oxidized, the welded material sheets are convenient to process in time, the material sheets are directly contacted with the heating zone or the cooling zone, heating and cooling are realized in a heat conduction mode, and compared with a radiation heating mode, the heating speed is greatly improved, the material sheets can be heated up and cooled down quickly, and the energy consumption is reduced.
The present utility model will be further described with reference to specific embodiments, however, it will be appreciated by those skilled in the art that the detailed description herein with reference to the accompanying drawings is for better illustration, and that the utility model is not necessarily limited to such embodiments, but rather is intended to cover various equivalent alternatives or modifications, as may be readily apparent to those skilled in the art.
Example 1
As shown in fig. 1-2: the lower side of the welding chamber 18 is provided with a conveying mechanism 2, and the welding chamber 18 is arranged on the upper side of the frame 1. The handling mechanism 2 comprises handling rods 24, a lifting mechanism, a translation mechanism and an opening and closing mechanism, wherein the lifting mechanism, the translation mechanism and the opening and closing mechanism are arranged on the lower side of the welding chamber 18, the middle part of the handling rods 24 is arranged in the welding chamber 18, two ends of the welding chamber 18 are sealed through end covers 26, handling ports 2601 are formed in two sides of each end cover 26, the handling rods 24 are horizontally arranged along the length direction of the welding chamber 18, the two handling rods 24 are symmetrically arranged on two sides of the welding chamber 18, and two ends of each handling rod 24 penetrate through the handling ports 2601 of the end covers 26 and extend out. The downside level of welding room 18 is provided with transport installation arm 45, transport installation arm 45 and carrier bar 24 one-to-one, transport installation arm 45 sets up the carrier bar 24 downside at corresponding side, the both ends of every carrier bar 24 all link to each other with the transport installation arm 45 of corresponding side through mounting panel 22, the upper end of mounting panel 22 links to each other with carrier bar 24, the lower extreme of mounting panel 22 links to each other with transport installation arm 45, elevating system installs on frame 1, translation mechanism installs on elevating system, opening and shutting mechanism installs on translation mechanism, and opening and shutting mechanism links to each other with two carrier bars 24 simultaneously, thereby realized opening and shutting, lift and translation action of two carrier bars 24, the transport of convenient tablet.
An adjusting spring 23 is arranged between one end of each carrying rod 24 and the mounting plate 22, the adjusting spring 23 is sleeved on the carrying rods 24, one end of each carrying rod 24 close to the adjusting spring 23 is in sliding connection with the mounting plate 22, the adjusting spring 23 is arranged outside the mounting plate 22, one end of each adjusting spring 23 is supported on the mounting plate 22, and the other end of each adjusting spring is supported at the end of each carrying rod 24, so that the position adjusting spring 23 for adjusting the carrying rods 24 in the axial direction can play a role of buffering, and the falling of a tablet caused by impact load generated in the carrying process is avoided.
The lower sides of the end caps 26 at the two ends of the welding chamber 18 are spaced from the upper side of the welding table 20, so that a feed end and a discharge end are formed at the two ends of the welding chamber 18, one end close to the heating area is the feed end of the welding chamber 18, and the other end close to the cooling area is the discharge end of the welding chamber 18. The both ends of every end cover 26 all are provided with vertical baffle mounting groove 2602, and slidable mounting has baffle 27 in baffle mounting groove 2602, baffle 27 and carrier bar 24 sliding connection, and seal between baffle 27 and the carrier bar 24 and set up, baffle 27 seals carrier port 2601 to can be in carrier bar 24 transport tablet in-process baffle 27 along with carrier bar 24 at the plane that end cover 26 is located, make baffle 27 seal carrier port 2601 all the time, avoid nitrogen leakage, still removed the restriction to carrier port 2601 size, and then can make things convenient for the setting of carrier bar 24's motion trail. The baffle 27 also seals the gap between the end cap 26 and the welding station 20, i.e., the feed end or discharge end, and opens the discharge end when the carrier bar 24 holds up the web, facilitating the movement of the web into or out of the welding chamber 18, avoiding nitrogen leakage. Sealing sleeves 25 are mounted at two ends of each carrying rod 24, and each carrying rod 24 is in sliding and sealing connection with a baffle 27 through the sealing sleeve 25.
As shown in fig. 3: the carrier bars 24 on two sides of each station are provided with a plurality of bearing parts, the bearing parts are arranged on the inner sides of the carrier bars 24, and telescopic modules are arranged between each bearing part and the carrier bars 24, and are air cylinders or electric push rods 69, and in the embodiment, the telescopic modules are the electric push rods 69. The piston rod of the electric push rod 69 is connected with the bearing part through the bearing part mounting rod, so that the bearing part extends to a position close to the middle of the tablet, the tablet is more stable when being supported, the electric push rod 69 is horizontally arranged, the bearing part is mounted on the lower side of the telescopic part of the electric push rod 69, and the bearing parts on two sides of each station are arranged towards the middle of the station.
As shown in fig. 4: the welding station 20 comprises a plurality of heating plates 30 and a plurality of cooling plates 28, wherein the heating plates 30 are sequentially arranged along the length direction of the welding chamber 18 to form a heating zone, the cooling plates 28 are sequentially arranged along the length direction of the welding chamber 18 to form a cooling zone, the cooling zone is arranged near a discharge end, and each heating plate 30 and each cooling plate 28 are all a station. The negative pressure pumping module 9 is arranged on the upper side of the heating plate 30 near one end of the cooling area.
The two sides of each heating plate 30 are symmetrically provided with heating plate abdicating openings 3001, the two sides of each cooling plate 28 are symmetrically provided with cooling plate abdicating openings 2801, a bearing part stretches into the heating plate abdicating openings 3001 or the cooling plate abdicating openings 2801 and holds up the material sheets horizontally placed on the heating plates 30 or the cooling plates 28, so that the material sheets can be integrally placed on the cooling plates 28 or the heating plates 30, the material sheets are prevented from being heated and softened, the material sheets are prevented from deforming, and the negative pressure pumping module 9 and the heating plates 30 are conveniently sealed.
The electrothermal tubes 31 are symmetrically arranged on two sides of each heating plate 30, and the temperature sensors 32 are arranged on the heating plates 30 between the two electrothermal tubes 31, so that independent control of each heating plate 30 is realized, the temperature of the heating plates 31 is gradually increased along the direction close to the discharge end, and therefore the material sheets are gradually heated, and solder paste dripping caused by too fast heating is avoided. Every cooling plate 28 is last all to be connected with inlet tube 29, and the cooling plate 28 cools down the tablet on the cooling platform 28 through the cooling water, and along the direction that is close to the discharge end, the temperature of cooling platform 28 reduces gradually to progressively cool down the tablet, avoid cooling down too soon and lead to the solder paste of solidification to split.
The feeding end outside of the welding chamber 18 is provided with a feeding table 21, two ends of the feeding table 21 are provided with feeding table abdicating openings 2101 matched with the bearing parts, the feeding table 21 is provided with a tablet, and the tablet can be conveyed to the welding table 20 in the welding chamber 18 by the conveying mechanism 2. The discharge end of welding room 18 is provided with ejection of compact platform 19, and the both ends of ejection of compact platform 19 all are provided with supporting portion matched with ejection of compact platform and give way the mouth 1901, and handling mechanism 2 carries the tablet after the cooling to ejection of compact bench 19 to make this vacuum welding stove realize the welding of continuity, can realize ejection of compact and feeding without opening bell 4.
As shown in fig. 5: the bottom of welding room 18 is provided with liquid collecting cover 33, and the both sides of liquid collecting cover 33 are the slope form that gradually descends from lateral part to middle part, and the middle part both ends symmetry of liquid collecting cover 33 are provided with liquid collecting cover drain pipe 3301, and liquid collecting cover 33 can collect the water droplet that the cooling zone liquefaction formed and send out outside welding room 18, avoids causing the hindrance to the welding of tablet in welding room 18.
As shown in fig. 6: the heating plate 30 is a rectangular plate, and a heating plate mounting hole 3004 is provided at a corner of the heating plate 30. The electric heating tube mounting holes 3002 are symmetrically formed in two sides of the heating plate 30, the electric heating tube mounting holes 3002 are through holes which are horizontally arranged, and each electric heating tube mounting hole 3002 is internally provided with one electric heating tube 31, so that uniform heating can be ensured. The middle part of the heating plate 30 is also provided with a horizontal sensor mounting hole 3003, the sensor mounting hole 3003 is a blind hole parallel to the electric heating tube mounting hole 3002, the length of the sensor mounting hole 3003 is half of the length of the heating plate 30, and the temperature sensor 32 is mounted in the sensor mounting hole 3003, so that the temperature of the heating plate 30 can be detected in real time.
As shown in fig. 7: the cooling plate 28 is rectangular plate with length and width equal to length and width of the heating plate 30 respectively, the corner of the cooling plate 28 is provided with a cooling plate mounting hole 2804, two sides of the cooling plate 28 are symmetrically provided with horizontal water inlet channels 2802, the water inlet channels 2802 are arranged along the length direction of the cooling plate 28, one end of the cooling plate 28 is provided with a horizontal water outlet channel 2803, and the water outlet channel 2803 communicates the two water inlet channels 2802, so that the temperature of the whole cooling plate 28 is uniform, and the cooling effect is good. Both ends of the water discharging passage 2803 and the water inlet passage 2802 are provided with connection parts, thereby facilitating connection of the water inlet pipe 29 and the water outlet pipe.
As shown in fig. 8 to 9: the welding chamber 18 is arranged on the upper side of the frame 1, and the welding chamber 18 is fixedly connected with the frame 1 through a welding chamber mounting piece 40. A plurality of welding chamber mounting pieces 40 are symmetrically arranged on two sides of the welding chamber 18, fixing portions 4001 protruding downwards are symmetrically arranged on two ends of the lower side of the welding chamber mounting pieces 40, through holes are formed in the fixing portions 4001, and the welding chamber mounting pieces 40 are fixedly connected with the frame 1 through bolts arranged in the through holes of the fixing portions 4001. The welding chamber mounting piece 40 is symmetrically provided with stepped holes 4002 at two ends, the diameter of the upper portion of each stepped hole 4002 is larger than the diameter of the lower portion, each stepped hole 4002 is provided with a mounting pin 39, each mounting pin 39 is cylindrical, the lower end of each mounting pin 39 is coaxially provided with a threaded hole 3901, each threaded hole 3901 is a blind hole formed in each mounting pin 39, the diameter of each mounting pin 39 is equal to the diameter of the upper portion of each stepped hole 4002, and the lower end of each mounting pin 39 extends into the upper portion of each stepped hole 4002 and is fixedly connected with the welding chamber mounting piece 40 through a bolt. The heating plate mounting holes 3004 of the heating plate 30 are sleeved on the upper portions of the mounting pins 39, so that the heating plate 30 is mounted, and the cooling plate mounting holes 2804 of the cooling plate 28 are sleeved on the upper portions of the mounting pins 39, so that the cooling plate 28 is mounted and dismounted conveniently.
As shown in fig. 10: the furnace cover 4 comprises a furnace cover on the upper side and a furnace cover mounting plate 14 on the lower side, wherein the furnace cover is a cuboid box with an opening on the lower side, the furnace cover mounting plate 14 is a cuboid plate, and the furnace cover mounting plate 14 is arranged on the lower side of the furnace cover and seals the opening of the furnace cover. The mounting arm 12 and the suction module are mounted on a furnace lid mounting plate 14.
In this embodiment, the shielding gas is nitrogen gas, the shielding gas intake pipe is main nitrogen gas intake pipe 5, the both ends of bell mounting panel 14 all are provided with main nitrogen gas intake pipe 5, the upper end of main nitrogen gas intake pipe 5 stretches out the bell jar, the upside of every main nitrogen gas intake pipe 5 all is provided with a direction cover 6, direction cover 6 interval sets up in the upside of the main nitrogen gas intake pipe 5 of corresponding side and with the upper end interval setting of main nitrogen gas intake pipe 5, direction cover 6 is cylindric, direction cover 6 and the equal vertical setting of main nitrogen gas intake pipe 5, direction cover 6 sets up in the upside of bell cover, and direction cover 6 sets up with main nitrogen gas intake pipe is coaxial, direction cover 6 can lead the pipeline that links to each other with main nitrogen gas intake pipe 5. Every main nitrogen gas intake pipe 5 all is provided with gas hood 15 between bell mounting panel 14, and the left and right sides on gas hood 15 upper portion is by down supreme inwards slope form gradually, and gas hood 15 sets up between bell mounting panel 14 and bell cover, and the downside of gas hood 15 is uncovered to be set up, and gas hood 15 downside and bell mounting panel 14 fixed connection, and bell 4 downside is provided with the slot hole that is used for with gas hood 15 and welding chamber 18 intercommunication to can spout into welding chamber 18 with the protection gas all with.
The upper side of the furnace cover mounting plate 14 is also provided with a purification air inlet pipe 7 and a purification air outlet pipe 8, the purification air inlet pipe 7 and the purification air outlet pipe 8 are communicated with the welding chamber 18 through a gas hood 15, and the purification air inlet pipe 7 and the purification air outlet pipe 8 are arranged on the same side of the negative pressure pumping module 9, so that the problem that welding oil is liquefied in the welding chamber 18 due to too low nitrogen temperature can be avoided, the temperature of a material sheet is low, and the welding time of the material sheet is prolonged. The purifying air outlet pipe 8 is communicated with the air inlet end of the purifying module 59, and the purifying air outlet pipe 8 is communicated with the air inlet end of the purifying module 59, so that welding oil vapor generated by heating welding oil in solder paste can be cleaned, and welding of a material sheet is prevented from being influenced by the welding oil vapor.
As shown in fig. 11 to 13: auxiliary nitrogen inlet pipes 16 are symmetrically arranged on two sides of the middle of the furnace cover mounting plate 14. The auxiliary nitrogen gas inlet pipe 16 is arranged on the upper side of the furnace cover mounting plate 14, and the air outlet end of the auxiliary nitrogen gas inlet pipe 16 is communicated with the welding chamber 18, so that nitrogen can be more uniformly sprayed into the welding chamber 18, the nitrogen in the welding chamber 18 is ensured to be completely discharged, and the reaction between the heated material sheet and oxygen is avoided. The middle part downside of bell mounting panel 14 is provided with air inlet 17, and air inlet 17 is rectangular shaped plate, and the upside of air inlet 17 is provided with the ascending air inlet 1701 of opening, and air inlet 1701 is the slot hole that sets up along air inlet 17 length direction, and every side of bell mounting panel 14 all is provided with two air inlet 17, and two air inlet 17 arrange in proper order along the length direction of bell mounting panel 14, all is provided with a plurality of fumaroles 1702 along length direction interval on every air inlet 17 to can guarantee to spout into in the welding chamber 18 with nitrogen gas is even. The downside of bell mounting panel 14 is provided with indent installing port 1401, and installing port 1401 and air inlet plate 17 one-to-one, and in installing port 1401 of bell mounting panel 14 was installed on the upper portion of air inlet plate 17, and the air inlet 1701 of every air inlet plate 17 all encircleed with installing port 1401 of bell mounting panel 14 and become the air inlet chamber, and the end of giving vent to anger of vice nitrogen gas intake pipe 16 communicates with the air inlet chamber to conveniently spout nitrogen gas to the air inlet intracavity.
As shown in fig. 14: the negative pressure pumping module 9 comprises a negative pressure pumping installation frame 34, a sealing plate 36, a connecting pipe 37 and a negative pressure pumping lifting cylinder 35, wherein the negative pressure pumping installation frame 34 is installed on the upper side of the furnace cover installation plate 14, the negative pressure pumping lifting cylinder 35 is installed on the negative pressure pumping installation frame 34, a piston rod of the negative pressure pumping lifting cylinder 35 is vertically arranged downwards, the sealing plate 36 is arranged on the lower side of the furnace cover installation plate 14, the sealing plate 36 is horizontally arranged, the bottom of the sealing plate 36 is concave inwards, a sealing ring is arranged on the bottom surface of the sealing plate 36 around the outer edge of the sealing plate, the sealing plate 36 and the heating plate 30 are encircled to form a negative pressure cavity, a material sheet to be welded is arranged in the negative pressure cavity, a horizontal connecting plate 38 is installed on the piston rod of the negative pressure pumping lifting cylinder 35, the connecting plate 38 is arranged on the upper side of the furnace cover installation plate 14, the connecting pipe 37 is arranged between the connecting plate 38 and the sealing plate 36, the connecting pipe 37 slides with the furnace cover installation plate 14 and is in sealing connection, the lower end of the connecting pipe 37 is communicated with the negative pressure cavity, and the upper end of the connecting pipe 37 is connected with the negative pressure pumping pipe.
As shown in fig. 15: the utility model also provides a vacuum welding furnace, which comprises a carrying mechanism 2 and the welding mechanism of the vacuum welding furnace, wherein the carrying mechanism 2 is arranged on the frame 1 at the lower side of the welding chamber 18.
As shown in fig. 16 to 17: the welding chamber 18 downside interval is provided with translation board 41, and transport installation arm 45 sets up between translation board 41 and welding chamber 18, and transport installation arm 45 passes through mount pad slidable mounting on translation board 41, and translation mechanism links to each other with translation board 41 and drives translation board 41 and translate along the transport direction of tablet. The lower side interval of translation board 41 is provided with horizontal transport mounting panel 52, and the upper portion bilateral symmetry of transport mounting panel 52 is provided with translation board guide rail 51, and translation board guide rail 51 and the central line parallel arrangement of transport pole 24, translation board 41 through setting up the translation board slider slidable mounting of downside on translation board guide rail 51, and transport mounting panel 52 installs on elevating system and goes up and down along with elevating system.
The lifting mechanism comprises a horizontally arranged translation frame 49, a lifting guide block 48, a lifting guide frame 47 and a carrying lifting cylinder 46, wherein a horizontal translation frame guide rail 50 is arranged on the frame 1, the translation frame guide rail 50 and a translation plate guide rail 51 are arranged in parallel, and the translation frame 49 is slidably arranged on the translation frame guide rail 50 through a translation frame sliding block at the lower side. The carrying lifting cylinder 46 is horizontally arranged on the frame 1, and a piston rod of the carrying lifting cylinder 46 is arranged towards the direction of the translation frame 49, and the piston rod of the carrying lifting cylinder 46 is connected with the translation frame 49 and pushes the translation frame 49 to move along the carrying direction of the material sheet. The lifting guide blocks 48 are symmetrically arranged on two sides of the translation frame 49, lifting guide parts are arranged on the upper sides of the lifting guide blocks 48, the lifting guide parts are gradually upwards inclined along the direction close to the carrying lifting cylinder 46, the lifting guide frames 47 are in one-to-one correspondence with the lifting guide blocks 48, lifting guide wheels are rotatably arranged on the lower sides of the lifting guide frames 47, and the lifting guide wheels are attached to the lifting guide parts of the lifting guide blocks 48 on the corresponding sides, so that the carrying mounting plate 52 is lifted. The frame 1 is provided with a vertical lifting guide rail, and the lifting mounting plate 52 is slidably mounted on the lifting guide rail through a lifting slide block so as to guide the carrying mounting plate 52.
The translation mechanism includes translation frame motor mounting bracket 54, transport removal frame 55 and translation motor 53, and translation motor mounting bracket 54 sets up the downside at transport mounting panel 52, and translation motor 53 installs on translation motor mounting bracket 54, and translation motor 53's output shaft level sets up and with the transport direction parallel arrangement of tablet. A translation screw is coaxially arranged on the translation motor 53, the translation screw synchronously rotates along with the translation motor 53, the carrying moving frame 55 is slidably arranged on the translation motor mounting frame 54, and a translation nut matched with the translation screw is arranged on the carrying moving frame 55. The upper side of the carrying and moving frame 55 passes through the carrying and mounting plate 52 and then is connected with the translation plate 41, and drives the translation plate 41 to synchronously move, and the carrying and moving frame 55 and the carrying and mounting plate 52 are arranged in a sliding manner.
The opening and closing mechanism includes an opening and closing mounting rod 42, an opening and closing guide plate 43, an opening and closing moving frame 56, an opening and closing motor mounting frame 57, an opening and closing moving frame 56, and an opening and closing power module, which in this embodiment is an opening and closing motor 58. The motor mounting bracket 57 opens and shuts sets up in the downside of carrying mounting panel 52, and the upside of motor mounting bracket 57 opens and shuts links to each other with translation board 41 and moves along with translation board 41 synchronization, and motor mounting bracket 57 opens and shuts and carries mounting panel 52 sliding connection. The open-close motor 58 is mounted on the open-close motor mounting bracket 57. The opening and closing moving frame 56 is slidably mounted on the opening and closing motor mounting frame 57, an opening and closing screw rod is coaxially mounted on an output shaft of the opening and closing motor 58, an opening and closing nut matched with the opening and closing screw rod is arranged on the opening and closing moving frame 56, and the opening and closing motor 58 drives the opening and closing moving frame 56 to translate along the conveying direction of the material sheets through a screw rod nut pair. The upper side of translation board 41 is provided with the installation pole slider, and installation pole 42 slidable mounting opens and shuts on the installation pole slider, and installation pole 42 that opens and shuts sets up along the transport direction of tablet, opens and shuts and moves the upside of frame 56 and link to each other with installation pole 42 that opens and shuts and drive installation pole 42 synchronous movement, opens and shuts and removes frame 56 and transport mounting panel 52 sliding connection. The two ends of the opening and closing installation rod 42 are respectively provided with an opening and closing guide plate 43, the two sides of the opening and closing guide plates 43 are respectively provided with an opening and closing guide part, the opening and closing guide parts are gradually inwards inclined along the conveying direction of the material sheets, the two ends of each conveying installation arm 45 are respectively provided with an opening and closing guide wheel 44, and an opening and closing spring for enabling the opening and closing guide wheels 44 to be attached to the opening and closing guide parts of the opening and closing guide plates 43 is further arranged between the two conveying installation arms 45. The translation plate 41 is also provided with a mounting arm guide rail which is perpendicular to the opening and closing mounting rod 42, and the carrying and mounting arm 45 is slidably mounted on the mounting arm guide rail through an opening and closing slider.
As shown in fig. 18 to 19: the purifying module 59 includes a purifying box 61, a coil 67 and a filter screen 64 arranged in the purifying box 61, the purifying box 61 is a cuboid box body, one side of the purifying box 61 is connected with a purifying box air inlet pipe 62, the other side of the purifying box 61 is connected with a purifying box air outlet pipe, and a fan 65 is arranged between the purifying box air outlet pipe and the welding chamber 18. The coil pipe 67 is arranged in the purifying box 61, the coil pipe 67 is also connected with the oil supply tank 60, the oil outlet of the oil supply tank 60 is communicated with one end of the coil pipe 67 through a circulating pump, and the other end of the coil pipe 67 is communicated with the oil supply tank 60, so that the circulation of cooling oil is realized. Fins 68 connected with the coil 67 are further arranged in the purifying box 61, so that heat exchange with nitrogen can be performed more quickly, and the temperature of the nitrogen can be reduced. The purifying box 61 is provided with filter screen mounting box 63 near one side of purifying box outlet duct, and purifying box outlet duct passes through filter screen mounting box 63 and purifying box 61 intercommunication, and filter screen 64 vertical setting is in filter screen mounting box 63, and the nitrogen gas after the cooling passes through filter screen 64 and discharges through the purifying box outlet duct to in the welding room 18 again, filter screen 64 is used for filtering the welding oil after the liquefaction, thereby detach the welding oil steam in the nitrogen gas.
The lower side of the purifying box 61 is also provided with a welding oil collecting barrel 66, and the lower side of the purifying box 61 is inclined along one end which is close to the welding oil collecting barrel 66 and lower than the other end, so that the liquid after cooling and liquefying can flow into the welding oil collecting barrel 66.
The welding process of the vacuum welding furnace comprises the following steps of:
1) The furnace cover 4 seals the welding chamber 18, and the protective gas inlet pipe fills protective gas into the welding chamber 18;
the welding chamber 18 is filled with nitrogen through the main nitrogen inlet pipe 5 and the sub nitrogen inlet pipe 16, so that the whole welding chamber 18 is filled with nitrogen, and the air in the welding chamber 18 is completely discharged. At the same time, the electric heating tube 31 heats the heating plate 30, and the water inlet pipe 29 is used for introducing cooling water into the cooling plate 28.
2) The conveying mechanism 2 conveys the material sheets into the negative pressure cavity piece by piece, and the heating area gradually heats the material sheets in the conveying process;
placing the material sheets on the feeding table 21, driving the carrying rods 24 to move downwards by the lifting mechanism, driving the two carrying rods 24 to move downwards to a position close to the material sheets by the opening and closing mechanism, aligning with the feeding table abdicating opening 2101 on the feeding table 21, driving the carrying rods 24 to move downwards again by the lifting mechanism, enabling the bearing parts to be positioned in the feeding table abdicating opening 2101, and driving the bearing parts to move by the electric push rod 69, and enabling the bearing parts to extend into the lower sides of the material sheets. The lifting mechanism drives the carrying rod 24 to move upwards to finish the lifting of the material sheets, meanwhile, the baffle plate 27 at the feeding end opens the feeding end, and the translation mechanism drives the carrying rod 24 to move towards the direction close to the discharging end of the welding chamber 18 and carries the material sheets to the heating plate 30 in the welding chamber 18. The conveyance mechanism 2 sequentially conveys the web, and the web is heated by each heating plate 30 and then enters the heating plate 30 directly below the negative pressure suction module 9.
The negative pressure pumping lifting cylinder 35 drives the sealing plate 36 to move downwards, so that the sealing plate 36 and the heating plate 30 right below the sealing plate are surrounded to form a sealed negative pressure cavity, and meanwhile, the negative pressure pumping pipe is used for pumping gas in the negative pressure cavity, so that the negative pressure cavity maintains a negative pressure or even a vacuum state, bubbles in solder paste are ensured to overflow, and the welding quality is ensured. The negative pressure pumping lifting cylinder 35 drives the sealing plate 36 to lift after the welding is completed.
3) The conveying mechanism 2 conveys the material sheets welded in the negative pressure cavity to the discharge end, and the cooling area gradually cools the material sheets.
The conveying mechanism 2 continues to convey the material sheet toward the discharge end, and after the material sheet is cooled by each cooling plate 28 in turn, the material sheet is moved onto the discharge table 19, and the welding of the material sheet is completed.
Example 2
Example 2 differs from example 1 in that: the bearing portion is directly installed on the carrier bar 24, and the both ends of hot plate 30 are provided with hot plate and step down the mouth 3001, and the both ends of cooling plate 28 are provided with cooling plate and step down the mouth 2801, and the bearing portion passes through the both ends bearing tablet of tablet.
The above description is only a preferred embodiment of the present utility model, and is not intended to limit the utility model in any way, and any person skilled in the art may make modifications or alterations to the disclosed technical content to the equivalent embodiments. However, any simple modification, equivalent variation and variation of the above embodiments according to the technical substance of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims (10)

1. A welding mechanism of a vacuum welding furnace is characterized in that: the automatic welding device comprises a welding chamber (18) and a furnace cover arranged on the upper side of the welding chamber (18), wherein a welding cavity is arranged between the furnace cover (4) and the welding chamber (18), a welding table (20) is arranged at the lower part of the welding chamber (18), one side, close to a feeding end, of the welding table (20) is a heating area, one side, close to a discharging end, of the welding table (20) is a cooling area, one end, close to the cooling area, of the heating area is provided with a negative pressure suction module (9), the negative pressure suction module (9) is arranged on the furnace cover (4) in a lifting manner, a closed negative pressure cavity is formed by surrounding the bottom of the negative pressure suction module (9) and the heating area, and a protective gas inlet pipe is arranged on the welding chamber (18) or the furnace cover (4);
two ends of the welding chamber (18) are closed by end covers (26), and two sides of each end cover (26) are provided with carrying ports (2601); the lower sides of end covers (26) at two ends of a welding chamber (18) are arranged at intervals with the upper sides of welding tables (20), so that a feeding end and a discharging end are formed at two ends of the welding chamber (18), the lower sides of the end covers (26) at two ends of the welding chamber (18) are arranged at intervals with the upper sides of the welding tables (20), vertical baffle mounting grooves (2602) are formed in two ends of each end cover (26), baffles (27) are slidably mounted in the baffle mounting grooves (2602), a carrying port (2601) is closed by the baffles (27), and the feeding end or the discharging end can be closed by the baffles (27);
the welding chamber (18) downside is equipped with transport mechanism (2), transport mechanism (2) include transport pole (24) and set up elevating system, translation mechanism and the mechanism that opens and shuts in welding chamber (18) downside, the middle part setting of transport pole (24) is in welding chamber (18), transport pole (24) are along the length direction level setting of welding chamber (18), and two transport pole (24) symmetry sets up in the both sides of welding chamber (18), the transport mouth (2601) of end cover (26) are all passed at the both ends of every transport pole (24) and stretch out, the downside level of welding chamber (18) is provided with transport installation arm (45), transport installation arm (45) and transport pole (24) one-to-one, transport installation arm (45) set up in transport pole (24) downside of correspondence side, the both ends of every transport pole (24) all link to each other with transport installation arm (45) of correspondence side through mounting panel (22), the upper end and transport pole (24) link to each other, the lower extreme and the transport installation arm (45) of mounting panel (22) link to each other with transport installation arm (45), the translation mechanism has been realized simultaneously on two translation mechanism that opens and shuts, the mechanism that opens and shuts, both sides translation mechanism has been installed simultaneously;
an adjusting spring (23) is arranged between one end of each carrying rod (24) and the mounting plate (22), the adjusting spring (23) is sleeved on the carrying rods (24), one end, close to the adjusting spring (23), of each carrying rod (24) is slidably connected with the mounting plate (22), the adjusting spring (23) is arranged on the outer side of the mounting plate (22), one end of each adjusting spring (23) is supported on the mounting plate (22), and the other end of each adjusting spring is supported at the end of each carrying rod (24).
2. The welding mechanism of a vacuum welding furnace according to claim 1, wherein: the welding table (20) comprises a plurality of heating plates (30) and a plurality of cooling plates (28), wherein the heating plates (30) are spliced into a heating area, and the cooling plates (28) are spliced into a cooling area.
3. The welding mechanism of a vacuum welding furnace according to claim 2, wherein: the electric heating plates (30) are symmetrically arranged on two sides of each heating plate (30), the middle of each heating plate (30) is provided with a sensor mounting hole (3003), the sensor mounting holes (3003) are blind holes arranged between the two electric heating plates (31), and a temperature sensor (32) is arranged in each sensor mounting hole (3003).
4. The welding mechanism of a vacuum welding furnace according to claim 2, wherein: the cooling plate (28) is symmetrically provided with water inlet channels (2802) on two sides, and at least one end of the cooling plate (28) is provided with water drainage channels (2803) communicated with the two water inlet channels (2802).
5. The welding mechanism of a vacuum welding furnace according to claim 1, wherein: the lower side of the welding chamber (18) is provided with a liquid collecting cover (33), two sides of the bottom of the liquid collecting cover (33) are gradually inclined downwards from the side part to the middle part, and a liquid collecting cover liquid outlet pipe (3301) is arranged at the bottom of the liquid collecting cover (33).
6. The welding mechanism of a vacuum welding furnace according to claim 1, wherein: the protection gas inlet pipe is a main nitrogen inlet pipe (5), both ends of the furnace cover (4) are provided with the main nitrogen inlet pipe (5), the two sides of the middle part of the furnace cover (4) are symmetrically provided with auxiliary nitrogen inlet pipes (16), and the auxiliary nitrogen inlet pipes (16) are communicated with the welding chamber (18).
7. The welding mechanism of a vacuum welding furnace according to claim 6, wherein: the gas inlet device is characterized in that gas inlet plates (17) are symmetrically arranged on two sides of the lower portion of the furnace cover (4), a gas inlet (1701) with an opening at the upper side is arranged on the upper portion of the gas inlet plates (17) and surrounds the furnace cover (4) to form a gas inlet cavity, a plurality of gas injection holes (1702) for communicating the gas inlet (1701) with the welding chamber (18) are formed in the gas inlet plates (17) at intervals, and the auxiliary nitrogen gas inlet pipe (16) is communicated with the gas inlet (1701).
8. The welding mechanism of a vacuum welding furnace according to claim 1, wherein: the negative pressure pumping module (9) comprises a sealing plate (36) and a negative pressure pumping lifting cylinder (35), wherein the sealing plate (36) is arranged on the upper side of the heating zone and is parallel to the heating zone, the bottom of the sealing plate (36) and the heating zone are surrounded to form a closed negative pressure cavity, and the negative pressure cavity is connected with a negative pressure pumping pipe.
9. The welding mechanism of a vacuum welding furnace according to claim 8, wherein: the sealing plate (36) is arranged at the lower side of the furnace cover (4), the negative pressure pumping lifting cylinder (35) is arranged at the upper side of the furnace cover (4), a piston rod of the negative pressure pumping lifting cylinder (35) is connected with the sealing plate (36) through a connecting pipe (37), and the connecting pipe (37) is used for communicating the negative pressure cavity with the negative pressure pumping pipe.
10. The welding mechanism of a vacuum welding furnace according to claim 1, wherein: the welding device further comprises a purification module (59), and an air inlet end and an air outlet end of the purification module (59) are communicated with the welding chamber (18).
CN201711475755.7A 2017-12-29 2017-12-29 Welding mechanism of vacuum welding furnace Active CN107838516B (en)

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DE112018006659.2T DE112018006659T5 (en) 2017-12-29 2018-05-24 Welding unit of a vacuum welding furnace
PCT/CN2018/088224 WO2019128065A1 (en) 2017-12-29 2018-05-24 Welding mechanism of vacuum welding furnace
JP2020536686A JP7175987B2 (en) 2017-12-29 2018-05-24 Welding Mechanism of Vacuum Welding Furnace
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WO2019128065A1 (en) 2019-07-04
JP7175987B2 (en) 2022-11-21

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