CN110788436A - Vacuum furnace equipment for reflow soldering machine - Google Patents
Vacuum furnace equipment for reflow soldering machine Download PDFInfo
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- CN110788436A CN110788436A CN201911075136.8A CN201911075136A CN110788436A CN 110788436 A CN110788436 A CN 110788436A CN 201911075136 A CN201911075136 A CN 201911075136A CN 110788436 A CN110788436 A CN 110788436A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/04—Heating appliances
- B23K3/047—Heating appliances electric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
- B23K2101/42—Printed circuits
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Abstract
A vacuum furnace device for a reflow soldering machine comprises a rack (1), a lower furnace body (2), an upper furnace body (3) and a furnace entering conveying assembly (4), wherein the lower furnace body (2) and the furnace entering conveying assembly (4) which are matched with each other are respectively arranged at two ends of the rack (1); the furnace also comprises a furnace feeding and material stirring component (5), an upper furnace body jacking component (6) and an upper furnace body heating component (7); the outer wall of the top plate of the upper furnace body (3) is provided with a plurality of grids (19). In the using process of the invention, the yield of the existing reflow soldering machine in production can be improved by various modes such as improving the stroke precision when sending workpieces, carrying out heating temperature compensation on the vacuum furnace body and the like.
Description
Technical Field
The invention relates to the technical field of reflow soldering machines, in particular to vacuum furnace equipment for a reflow soldering machine.
Background
In current industrial production, reflow soldering operation is often performed on a PCB and the like by using a reflow soldering machine, wherein a vacuum furnace is a core functional component of the reflow soldering machine.
However, the existing vacuum furnace has many disadvantages, such as: in the existing reflow soldering machine, the PCB needs to be preheated before being sent into the vacuum furnace by the furnace entering conveying assembly, but at a higher temperature, the situation that the friction force between the furnace entering conveying assembly and the PCB is insufficient is easy to occur, for example, in the board entering leading-in device of the reflow soldering machine disclosed by the furnace entering conveying assembly patent (patent application No. 200820046891.4) applied by the applicant before the application date, the friction coefficient of the chain can be reduced under an ultrahigh temperature state, so that the friction force between the chain and the PCB is reduced, and finally the problem that the stroke of the PCB is wrong occurs.
Thus, the prior art is subject to improvement and advancement.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides vacuum furnace equipment for a reflow soldering machine.
The invention provides the following technical scheme:
a vacuum furnace device for a reflow soldering machine comprises a rack (1), a lower furnace body (2), an upper furnace body (3) and a furnace entering conveying assembly (4), wherein the lower furnace body (2) and the furnace entering conveying assembly (4) which are matched with each other are respectively arranged at two ends of the rack (1); the furnace also comprises a furnace feeding and material stirring component (5), an upper furnace body jacking component (6) and an upper furnace body heating component (7); the furnace entering material shifting assembly (5) is matched with the furnace entering conveying assembly (4) and comprises a linear module (8), a first base (9), a first motor (10) and a material shifting rod (11); the linear module (8) is fixed on the rack (1), and the linear module (8) drives the first base (9) to reciprocate along the feeding direction of the furnace feeding conveying assembly (4); the first motor (10) is arranged on the first base (9), and the first motor (10) drives the material poking rod (11) to rotate; the upper furnace body jacking assembly (6) comprises a transverse plate (12), a portal frame (13), a top rod (14), a connecting plate (15), a first lead screw nut (16), a first lead screw (17) and a second motor (18); the transverse plate (12) is arranged on the rack (1) and is positioned below the lower furnace body (2); the transverse plate (12) is symmetrically provided with two portal frames (13), and the two portal frames (13) are respectively positioned at two sides of the lower furnace body (2); the top plate of each portal frame (13) is movably provided with a top rod (14) in a penetrating way; the middle part of the ejector rod (14) is fixedly connected with the connecting plate (15), and the first lead screw nut (16) is also arranged on the connecting plate (15); each first lead screw nut (16) is in threaded fit with one first lead screw (17), and each first lead screw (17) is driven by the second motor (18) arranged on the transverse plate (12); the outer wall of the top plate of the upper furnace body (3) is provided with a plurality of grids (19); the side walls of the two sides of the upper furnace body (3) are connected with connecting blocks (20); the connecting block (20) is connected with a mandril (14) of the upper furnace body jacking assembly (6); the upper furnace body heating component (7) is positioned above the upper furnace body (3) and comprises a shell (21), an air deflector (22), a wind shield (23), a circulating air pipe (24), a first heating component (25) and a circulating fan (26); the shell (21) is arranged on the rack (1), and the air deflector (22) is arranged at the bottom of the shell (21); the air deflector (22) is provided with a plurality of air holes (27) communicated with the grids (19); the air deflector (22) and the wind shield (23) arranged on the upper wall of the air deflector enclose a cavity; the cavity is matched with the first heating component (25); the air inlet and the air outlet of the circulating air pipe (24) are respectively communicated with the end parts at the two sides of the cavity; the circulating air pipe (24) is matched with the circulating fan (26).
Preferably, a first synchronizing wheel (28) is sleeved on an output shaft of the second motor (18), a rotating shaft is rotatably connected to the transverse plate (12), a second synchronizing wheel (29) and a third synchronizing wheel (30) are respectively connected to two ends of the rotating shaft, and the second synchronizing wheel (29) and the first synchronizing wheel (28) are driven through a first synchronizing belt (31); a fourth synchronizing wheel (32) is arranged at the bottom end of each first screw rod (17), and all the fourth synchronizing wheels (32) and the third synchronizing wheel (30) are driven by a second synchronous belt (33).
Preferably, a second heating assembly (34) is arranged on the side wall of the lower furnace body (2); and a third heating assembly (35) is arranged at the bottom of the lower furnace body (2).
Preferably, the upper side and the lower side of the furnace feeding conveying assembly (4) are respectively matched with a fourth heating assembly (36) and a fifth heating assembly (37).
Preferably, an adjustable guide rail assembly is further arranged in the lower furnace body (2), and the adjustable guide rail assembly comprises a second base (38), a third base (39), a second screw rod (40), a second screw rod nut (41), a sliding plate (42) and a workpiece conveying guide rail (43); the second base (38) and the third base (39) are oppositely arranged in the lower furnace body (2); two ends of the second screw rod (40) are respectively and rotatably connected to the second base (38) and the third base (39), the second screw rod (40) is in threaded fit with the second screw rod nut (41), and the second screw rod nut (41) is fixedly connected with the sliding plate (42); the second base (38) and the sliding plate (42) are respectively provided with one workpiece conveying guide rail (43).
Preferably, guide posts (44) are further arranged on the second base (38) and the third base (39), and the sliding plate (42) is provided with a guide sleeve (45) which is in guiding fit with the guide posts (44).
Preferably, the upper end edge of the lower furnace body (2) is in a step shape and comprises a first step surface (46) and a second step surface (47); a first annular groove (48) and a second annular groove (49) are respectively formed in the first step surface (46) and the second step surface (47); sealing rings (50) are arranged in the first annular groove (48) and the second annular groove (49); the lower end edge of the upper furnace body (3) is matched with the upper end edge of the lower furnace body (2).
Compared with the prior art, the invention has the following beneficial effects:
1. the feeding conveying assembly is used as a main part, the feeding material shifting assembly is used as an auxiliary part, and the PCB is conveyed into the lower furnace body of the vacuum furnace by the two assemblies in a cooperative mode, so that feeding errors of the feeding conveying assembly in a high-temperature environment are prevented, and smooth proceeding of subsequent production operation is facilitated.
2. The upper furnace body jacking assembly works in a screw rod transmission mode, and the stroke control of the upper furnace body of the vacuum furnace is more accurate.
3. When the upper furnace body of the vacuum furnace is opened, the heat dissipation speed of the upper furnace body is reduced through the grid arranged on the upper part of the vacuum furnace, temperature compensation can be timely carried out through the upper furnace body heating assembly, and meanwhile, the balance of the temperature of each part on the upper part of the upper furnace body is promoted by the circulating fan.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a charging and ejecting assembly according to the present invention;
FIG. 3 is a schematic structural view of an upper furnace body jacking assembly, a lower furnace body, an upper furnace body and an upper furnace body heating assembly of the present invention;
FIG. 4 is a schematic view of the mechanism of the upper furnace jacking assembly of the present invention;
FIG. 5 is an exploded view of the upper furnace body and upper furnace body heating assembly of the present invention;
FIG. 6 is a schematic view of the structure of the related components of the lower furnace of the present invention;
FIG. 7 is a schematic view of the construction of the adjustable guide rail assembly in the lower furnace body of the present invention;
FIG. 8 is a schematic view of the upper and lower furnace sealing structure of the present invention;
the reference numbers in the figures are respectively: (1) a machine frame, (2) a lower furnace body, (3) an upper furnace body, (4) a furnace entering conveying assembly, (5) a furnace entering material shifting assembly, (6) an upper furnace body jacking assembly, (7) an upper furnace body heating assembly, (8) a linear module, (9) a first base, (10) a first motor, (11) a material shifting rod, (12) a transverse plate, (13) a portal frame, (14) a mandril, (15) a connecting plate, (16) a first screw nut, (17) a first screw, (18) a second motor, (19) a grid, (20) a connecting block, (21) a shell, (22) an air deflector, (23) a wind shield, (24) a circulating air pipe, (25) a first heating assembly, (26) a circulating fan, (27) an air hole, (28) a first synchronous wheel, (29) a second synchronous wheel, (30) a third synchronous wheel, (31) a first synchronous belt, (32) a fourth synchronous wheel, (33) a second synchronous belt, (34) the heating device comprises a second heating assembly, (35) a third heating assembly, (36) a fourth heating assembly, (37) a fifth heating assembly, (38) a second base, (39) a third base, (40) a second lead screw, (41) a second lead screw nut, (42) a sliding plate, (43) a workpiece conveying guide rail, (44) a guide post, (45) a guide sleeve, (46) a first step surface, (47) a second step surface, (48) a first annular groove, (49) a second annular groove, (50) a sealing ring, (51) a vertical plate, (52) a fifth synchronizing wheel, (53) a sixth synchronizing wheel, (54) a third synchronizing belt, (55) a groove, (56) a partition plate, and (57) an adjusting wheel.
Detailed Description
The technical solution of the present invention is further explained with reference to the accompanying drawings.
Examples
A vacuum furnace device for a reflow soldering machine comprises a rack 1, a lower furnace body 2, an upper furnace body 3 and a furnace entering conveying assembly 4, wherein the lower furnace body 2 and the furnace entering conveying assembly 4 which are matched with each other are respectively arranged at two ends of the rack 1; the furnace also comprises a furnace feeding and material stirring component 5, an upper furnace body jacking component 6 and an upper furnace body heating component 7.
The furnace entering material shifting assembly 5 is matched with the furnace entering conveying assembly 4 and comprises a linear module 8, a first base 9, a first motor 10, a vertical plate 51, a fifth synchronous wheel 52, a sixth synchronous wheel 53, a third synchronous belt 54 and a material shifting rod 11; the linear module 8 is fixed on the rack 1, and the linear module 8 drives the first base 9 to reciprocate along the feeding direction of the furnace feeding conveying assembly 4; the first motor 10 is arranged on the first base 9, the end edge of one side of the first base 9 is connected with the vertical plate 51, the vertical plate 51 is connected with the fifth synchronizing wheel 52 and the sixth synchronizing wheel 53 in a rotating manner, the fifth synchronizing wheel 52 is connected with an output shaft of the first motor 10, the fifth synchronizing wheel 52 and the sixth synchronizing wheel 53 are driven by the third synchronous belt 54, and the sixth synchronizing wheel 53 is connected with the material stirring rod 11. When the linear module 8 works, any one of the linear modules in the prior art can be used, the first motor 10 is connected with an external power supply, and the working principle is as follows: firstly, the first motor 10 drives the material stirring rod 11 to rotate forwards until the material stirring rod 11 is matched with a workpiece on the furnace entering conveying component 4; then, the linear module 5 drives the first motor 10, the material stirring rod 11 and the corresponding workpiece to move into the lower furnace body 2 of the vacuum furnace; finally, after the first motor 10 rotates reversely to drive the material poking rod 11 to be separated from the workpiece, the linear module 8 drives the first motor 10 and the material poking rod 11 to reset.
Further, in practical use, the length of the first base 9 can be increased according to use requirements, a plurality of first motors 10 are arranged on the first base 9 at intervals, and each first motor 10 drives one material shifting rod 11 respectively.
The upper furnace body jacking assembly 6 comprises a transverse plate 12, a portal frame 13, a mandril 14, a connecting plate 15, a first screw rod nut 16, a first screw rod 17 and a second motor 18; the transverse plate 12 is arranged on the frame 1 and is positioned below the lower furnace body 2; the transverse plate 12 is symmetrically provided with two portal frames 13, and the two portal frames 13 are respectively positioned at two sides of the lower furnace body 2; the top plate of each portal frame 13 is movably provided with the ejector rod 14 in a penetrating way; the middle part of the ejector rod 14 is fixedly connected with the connecting plate 15, and the first lead screw nut 16 is also arranged on the connecting plate 15; each first lead screw nut 16 is in threaded fit with one first lead screw 17, and each first lead screw 17 is driven by the second motor 18 arranged on the transverse plate 12.
The outer wall of the top plate of the upper furnace body 3 is provided with a plurality of grids 19, specifically, the outer wall of the top plate of the upper furnace body 3 is provided with a groove 55, the groove 55 is internally divided into a plurality of grids 19 by a plurality of criss-cross partition plates 56, and the grids 19 store a certain amount of high-temperature air, so that the heat dissipation speed of the upper furnace body 3 is reduced. The side walls of the two sides of the upper furnace body 3 are both connected with connecting blocks 20; the connecting block 20 is connected with the top rod 14 of the upper furnace body jacking assembly 6.
When the vacuum furnace works, the second motor 18 is connected with an external power supply, the first screw rod 17 is driven by the positive and negative rotation of the second motor 18 to synchronously rotate positively and negatively, the first screw rod nut 16, the connecting plate 15 and the ejector rod 14 are further driven to synchronously move up and down, the ejector rod 14 is connected with the upper furnace body 3 of the vacuum furnace, the lower furnace body 2 of the vacuum furnace is fixed on the rack 1, and finally the upper furnace body 3 and the lower furnace body 2 of the vacuum furnace are driven by the second motor 18 to move relatively, namely the upper furnace body jacking assembly 6 controls the opening and closing of the furnace body of the vacuum furnace.
The upper furnace body heating component 7 is positioned above the upper furnace body 3 and comprises a shell 21, an air deflector 22, a wind shield 23, a circulating air pipe 24, a first heating component 25 and a circulating fan 26; the shell 21 is arranged on the rack 1, and the air deflector 22 is arranged at the bottom of the shell 21; the air deflector 22 is provided with a plurality of air holes 27 communicated with the grid 19; the air deflector 22 and the windshield 23 arranged on the upper wall of the air deflector enclose a cavity; the cavity is matched with the first heating component 25, and the first heating component 25 is an infrared heating component and is connected with an external power supply; the air inlet and the air outlet of the circulating air pipe 24 are respectively communicated with the end parts at the two sides of the cavity; the circulation air duct 24 is fitted with the circulation fan 26.
After the upper furnace body 3 and the lower furnace body 2 of the vacuum furnace are started, the temperature of the upper furnace body 3 can be suddenly reduced, and at the moment, the upper furnace body 3 moves upwards until being attached to the upper furnace body heating assembly 7. A storage cavity for air is formed among the grid 19 on the outer wall of the top plate of the upper furnace body 3, the cavity surrounded by the air deflector 22 and the wind shield 23, and the circulating air pipe 24, the circulating fan 26 drives the air in the storage cavity to circularly flow, the first heating assembly 25 heats the air in the storage cavity to a high temperature state, the upper furnace body 3 is continuously heated by the circularly flowing high temperature air, and meanwhile, the temperature of each part of the upper furnace body 3 is ensured to be the same; the influence of the sudden temperature drop of the upper furnace body on the processing operation of the workpiece at the moment of opening the vacuum furnace is prevented.
Further, a first synchronizing wheel 28 is sleeved on an output shaft of the second motor 18, a rotating shaft (not shown in the figure) is rotatably connected to the transverse plate 12, a second synchronizing wheel 29 and a third synchronizing wheel 30 are respectively connected to two ends of the rotating shaft, and the second synchronizing wheel 29 and the first synchronizing wheel 28 are driven by a first synchronizing belt 31; a fourth synchronizing wheel 32 is arranged at the bottom end of each first screw rod 17, and all the fourth synchronizing wheels 32 and the third synchronizing wheel 30 are driven by a second synchronous belt 33.
Further, a second heating assembly 34 is arranged on the outer side wall of the lower furnace body 2; and a third heating assembly 35 is arranged on the outer wall of the bottom of the lower furnace body 2. The second heating assembly 34 and the third heating assembly 35 are both infrared heating assemblies in the prior art, and are connected to an external power supply.
Further, a fourth heating assembly 36 and a fifth heating assembly 37 are respectively matched with the upper side and the lower side of the furnace entering conveying assembly 4. The fourth heating assembly 36 and the second heating assembly 37 are both infrared heating assemblies in the prior art, and are both arranged on the rack 1.
Further, an adjustable guide rail assembly is also arranged in the lower furnace body 2, and the adjustable guide rail assembly comprises a second base 38, a third base 39, a second screw 40, a second screw nut 41, a sliding plate 42, a workpiece conveying guide rail 43 and an adjusting wheel 57; the second base 38 and the third base 39 are oppositely arranged in the lower furnace body 2; two ends of the second lead screw 40 are respectively and rotatably connected to the second base 38 and the third base 39, the second lead screw 40 is in threaded fit with the second lead screw nut 41, and the second lead screw nut 41 is fixedly connected with the sliding plate 42; the second base 38 and the slide plate 42 are respectively provided with one of the workpiece transfer rails 43. The adjusting wheel 57 is connected to the second lead screw 40, when the adjusting wheel 57 is rotated in use, the second lead screw 40 and the adjusting wheel 57 rotate synchronously, so that the second lead screw nut 41 and the sliding plate 42 are driven to slide synchronously, the distance between the two workpiece conveying guide rails 43 is changed finally, and the adjusting mechanism has the advantages of simplicity and convenience in adjustment and good universality.
Furthermore, guide posts 44 are further arranged on the second base 38 and the third base 39, and the sliding plate 42 is provided with guide sleeves 45 which are in guide fit with the guide posts 44, so that the precision and stability of the sliding plate 42 during sliding are improved.
Further, the upper end edge of the lower furnace body 2 is in a step shape and comprises a first step surface 46 and a second step surface 47; the first step surface 46 and the second step surface 47 are respectively provided with a first annular groove 48 and a second annular groove 49; the first annular groove 48 and the second annular groove 49 are both provided with sealing rings 50; the lower end edge of the upper furnace body 3 is matched with the upper end edge of the lower furnace body 2). The sealing is performed by two sealing rings 50 with staggered heights, so that the sealing effect of the vacuum furnace is better when the upper furnace body 3 and the lower furnace body 2 are closed.
Here, the furnace-entering conveying assembly 4 may be a board-entering introducing device of a reflow soldering machine disclosed in a patent application No. 200820046891.4, which is a patent of the applicant filed earlier, or may be a conveying functional assembly in the prior art, such as a conveyor belt.
The working process of the furnace entering conveying assembly of the invention is as follows:
firstly, the upper furnace body jacking assembly 2 drives a furnace body of the vacuum furnace to be opened, and at the moment, the upper furnace body heating assembly 7 carries out heating temperature compensation on the upper furnace body 3; then, the furnace entering conveying assembly 4 drives the PCB to move towards the lower furnace body 2; then, the furnace entering stirring assembly 5 stirs the PCB on the furnace entering conveying assembly 4, the furnace entering conveying assembly 4 and the furnace entering stirring assembly 5 push the PCB into the lower furnace body 2 together, and the fourth heating assembly 36 and the fifth heating assembly 37 pre-heat the PCB in the process that the PCB enters the lower furnace body 2; and finally, resetting all parts, and closing the furnace body of the vacuum furnace.
In conclusion, the invention solves the defects in the prior art and has the characteristics of reasonable structural design, better sealing effect and the like.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A vacuum furnace device for a reflow soldering machine comprises a rack (1), a lower furnace body (2), an upper furnace body (3) and a furnace entering conveying assembly (4), wherein the lower furnace body (2) and the furnace entering conveying assembly (4) which are matched with each other are respectively arranged at two ends of the rack (1); the method is characterized in that: the furnace also comprises a furnace feeding and material stirring component (5), an upper furnace body jacking component (6) and an upper furnace body heating component (7);
the furnace entering material shifting assembly (5) is matched with the furnace entering conveying assembly (4) and comprises a linear module (8), a first base (9), a first motor (10) and a material shifting rod (11); the linear module (8) is fixed on the rack (1), and the linear module (8) drives the first base (9) to reciprocate along the feeding direction of the furnace feeding conveying assembly (4); the first motor (10) is arranged on the first base (9), and the first motor (10) drives the material poking rod (11) to rotate;
the upper furnace body jacking assembly (6) comprises a transverse plate (12), a portal frame (13), a top rod (14), a connecting plate (15), a first lead screw nut (16), a first lead screw (17) and a second motor (18); the transverse plate (12) is arranged on the rack (1) and is positioned below the lower furnace body (2); the transverse plate (12) is symmetrically provided with two portal frames (13), and the two portal frames (13) are respectively positioned at two sides of the lower furnace body (2); the top plate of each portal frame (13) is movably provided with a top rod (14) in a penetrating way; the middle part of the ejector rod (14) is fixedly connected with the connecting plate (15), and the first lead screw nut (16) is also arranged on the connecting plate (15); each first lead screw nut (16) is in threaded fit with one first lead screw (17), and each first lead screw (17) is driven by the second motor (18) arranged on the transverse plate (12);
the outer wall of the top plate of the upper furnace body (3) is provided with a plurality of grids (19); the side walls of the two sides of the upper furnace body (3) are connected with connecting blocks (20); the connecting block (20) is connected with a mandril (14) of the upper furnace body jacking assembly (6);
the upper furnace body heating component (7) is positioned above the upper furnace body (3) and comprises a shell (21), an air deflector (22), a wind shield (23), a circulating air pipe (24), a first heating component (25) and a circulating fan (26); the shell (21) is arranged on the rack (1), and the air deflector (22) is arranged at the bottom of the shell (21); the air deflector (22) is provided with a plurality of air holes (27) communicated with the grids (19); the air deflector (22) and the wind shield (23) arranged on the upper wall of the air deflector enclose a cavity; the cavity is matched with the first heating component (25); the air inlet and the air outlet of the circulating air pipe (24) are respectively communicated with the end parts at the two sides of the cavity; the circulating air pipe (24) is matched with the circulating fan (26).
2. The vacuum furnace apparatus for reflow soldering machine according to claim 1, characterized in that: a first synchronizing wheel (28) is sleeved on an output shaft of the second motor (18), a rotating shaft is rotatably connected to the transverse plate (12), a second synchronizing wheel (29) and a third synchronizing wheel (30) are respectively connected to two ends of the rotating shaft, and the second synchronizing wheel (29) and the first synchronizing wheel (28) are driven through a first synchronizing belt (31); a fourth synchronizing wheel (32) is arranged at the bottom end of each first screw rod (17), and all the fourth synchronizing wheels (32) and the third synchronizing wheel (30) are driven by a second synchronous belt (33).
3. The vacuum furnace apparatus for reflow soldering machine according to claim 1, characterized in that: a second heating component (34) is arranged on the side wall of the lower furnace body (2); and a third heating assembly (35) is arranged at the bottom of the lower furnace body (2).
4. The vacuum furnace apparatus for reflow soldering machine according to claim 1, characterized in that: the upper side and the lower side of the furnace entering conveying assembly (4) are respectively matched with a fourth heating assembly (36) and a fifth heating assembly (37).
5. The vacuum furnace apparatus for reflow soldering machines according to claim 5, characterized in that: an adjustable guide rail assembly is also arranged in the lower furnace body (2), and the adjustable guide rail assembly comprises a second base (38), a third base (39), a second screw rod (40), a second screw rod nut (41), a sliding plate (42) and a workpiece conveying guide rail (43); the second base (38) and the third base (39) are oppositely arranged in the lower furnace body (2); two ends of the second screw rod (40) are respectively and rotatably connected to the second base (38) and the third base (39), the second screw rod (40) is in threaded fit with the second screw rod nut (41), and the second screw rod nut (41) is fixedly connected with the sliding plate (42); the second base (38) and the sliding plate (42) are respectively provided with one workpiece conveying guide rail (43).
6. The vacuum furnace apparatus for reflow soldering machines according to claim 5, characterized in that: guide posts (44) are further arranged on the second base (38) and the third base (39), and guide sleeves (45) matched with the guide posts (44) in a guiding mode are arranged on the sliding plate (42).
7. The vacuum furnace apparatus for reflow soldering machine according to claim 1, characterized in that: the upper end edge of the lower furnace body (2) is in a step shape and comprises a first step surface (46) and a second step surface (47); a first annular groove (48) and a second annular groove (49) are respectively formed in the first step surface (46) and the second step surface (47); sealing rings (50) are arranged in the first annular groove (48) and the second annular groove (49); the lower end edge of the upper furnace body (3) is matched with the upper end edge of the lower furnace body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911075136.8A CN110788436A (en) | 2019-11-06 | 2019-11-06 | Vacuum furnace equipment for reflow soldering machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911075136.8A CN110788436A (en) | 2019-11-06 | 2019-11-06 | Vacuum furnace equipment for reflow soldering machine |
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| CN110788436A true CN110788436A (en) | 2020-02-14 |
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| CN201911075136.8A Pending CN110788436A (en) | 2019-11-06 | 2019-11-06 | Vacuum furnace equipment for reflow soldering machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112059352A (en) * | 2020-11-04 | 2020-12-11 | 北京仝志伟业科技有限公司 | Multi-module packaging vacuum furnace for welding elements and using method thereof |
| CN113681104A (en) * | 2021-08-31 | 2021-11-23 | 无锡鑫迈维电子设备有限公司 | Nitrogen vacuum auxiliary reflow furnace |
| CN114226906A (en) * | 2022-01-13 | 2022-03-25 | 诚联恺达科技有限公司 | Vacuum structure of welding furnace |
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2019
- 2019-11-06 CN CN201911075136.8A patent/CN110788436A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112059352A (en) * | 2020-11-04 | 2020-12-11 | 北京仝志伟业科技有限公司 | Multi-module packaging vacuum furnace for welding elements and using method thereof |
| CN113681104A (en) * | 2021-08-31 | 2021-11-23 | 无锡鑫迈维电子设备有限公司 | Nitrogen vacuum auxiliary reflow furnace |
| CN114226906A (en) * | 2022-01-13 | 2022-03-25 | 诚联恺达科技有限公司 | Vacuum structure of welding furnace |
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