CN113028058A - Additive manufacturing gas protection sealing device and sealing method - Google Patents
Additive manufacturing gas protection sealing device and sealing method Download PDFInfo
- Publication number
- CN113028058A CN113028058A CN202110228086.3A CN202110228086A CN113028058A CN 113028058 A CN113028058 A CN 113028058A CN 202110228086 A CN202110228086 A CN 202110228086A CN 113028058 A CN113028058 A CN 113028058A
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- 238000007789 sealing Methods 0.000 title claims abstract description 233
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000000654 additive Substances 0.000 title claims abstract description 19
- 230000000996 additive effect Effects 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 238000012545 processing Methods 0.000 claims abstract description 19
- 230000003139 buffering effect Effects 0.000 claims abstract description 8
- 238000003466 welding Methods 0.000 claims description 25
- 238000004372 laser cladding Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 10
- 239000000084 colloidal system Substances 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 9
- 239000002184 metal Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 27
- 239000011261 inert gas Substances 0.000 description 7
- 238000010009 beating Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Laser Beam Processing (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
Abstract
A gas protection sealing device for additive manufacturing and a sealing method thereof comprise a sealing cover, a rack and the like, wherein a first-stage sealing fixed plate is fixedly connected at the head end of a workbench, a conical sealing thread rubber head for a screw rod to axially pass through is arranged on the outer side of the first-stage sealing fixed plate, the first-stage sealing fixed plate is connected with a first-stage sealing movable plate through a buffering component with a limiting function, the screw rod sequentially passes through the workbench, the first-stage sealing fixed plate, the conical sealing thread rubber head and the first-stage sealing movable plate and then is rotatably connected on a support at the tail end of the rack, when the buffering component with the limiting function is compressed, the conical sealing thread rubber head is extruded into a conical hole to seal the screw rod, the invention can locally seal a processing unit and a transmission unit, so that a machine tool has active metal processing capability, the continuity of an internal transmission mechanism and an external transmission mechanism of the sealing device is, the processing mode and the working procedure can be switched randomly in the whole workpiece processing process.
Description
Technical Field
The invention relates to the technical field of transmission device sealing, in particular to a gas protection sealing device and a sealing method for additive manufacturing.
Background
In actual production or scientific experiments, when an active metal is additively manufactured or welded, a reliable sealing operation of an additive manufacturing or welding site and a surrounding space thereof is required to be protected by an inert gas environment atmosphere. Traditionally to automatic continuous operation's lathe, generally take holistic sealed mode, be about to carry out whole sealing with the system of processing of transmission of lathe, but this sealed mode is filled the gas volume at every turn great, and the demand of panel beating is big when making this type of lathe, especially under the condition of the lathe of having gaseous environment to original not needing gas atmosphere to participate in processing to be transformed into the lathe that has gaseous environment to participate in processing, present solution is basically demolishd its original panel beating or does sealed cabin at the panel beating periphery, be unfavorable for saving the cost, be more unfavorable for the migration of lathe, cause very big waste. Under the condition that complex parts or complex cavities need to be processed alternately by additive welding, additive reducing or man-machine machining, the existing equipment needs to be clamped and repositioned again, so that the processing precision is influenced, the continuity of automation and intelligence is not provided, the parts cannot be automatically produced and intelligently arranged, the processing capability and the processing efficiency are extremely limited, and the modern production standard cannot be met. The invention provides a sealing device and a sealing method thereof capable of realizing gas protection of an uninterrupted transmission system in additive manufacturing, which can locally seal a processing unit and a transmission unit, enable a machine tool to have active metal processing capacity, avoid the continuity of an internal transmission mechanism and an external transmission mechanism of the sealing device, avoid secondary clamping and repositioning of a processed workpiece, and realize the random switching of a processing mode and a working procedure in the whole workpiece processing process, thereby realizing digital, automatic and even intelligent manufacturing.
Disclosure of Invention
The invention aims to provide an additive manufacturing gas protection sealing device and a sealing method, which are used for solving the problems in the background art.
A gas protection sealing device for additive manufacturing comprises a sealing cover, a rack, a sealing door, a workbench, a primary sealing fixed plate, a primary sealing movable plate and a conical sealing threaded rubber head, wherein the rack is arranged at the upper end of a base plate, and two sliding rails are respectively arranged at the upper end of the rack in parallel;
the head end of the workbench is fixedly connected with a primary sealing fixed plate, the outer side of the primary sealing fixed plate is provided with a conical sealing thread rubber head for the screw rod to axially pass through, the primary sealing fixed plate is connected with a primary sealing movable plate through a buffering part with a limiting function, the outer side of the primary sealing movable plate is provided with a first sealing rubber strip, the workbench, the primary sealing fixed plate and the primary sealing movable plate are respectively provided with a first chute matched with the slide rail, the workbench, the primary sealing fixed plate and the primary sealing movable plate are respectively connected on the slide rail through the first chutes in a sliding way, one end of the rack is provided with a motor, the rotation of the motor is controlled by an external numerical control system, the screw rod is connected on the rotating shaft of the motor, and the screw rod is connected on a support at the tail end of the rack after sequentially passing through the workbench, the primary sealing fixed plate, the conical sealing thread rubber head, the work is connected to the lead screw in a sliding mode through the ball screw nut, the through hole through which the lead screw passes through the primary sealing movable plate is a tapered hole, and when the buffering component with the limiting function is compressed, the tapered sealing thread rubber head is extruded into the tapered hole to seal the lead screw;
rack upper end be provided with the portable laser cladding head or portable soldering turret by outside numerical control system control, rack one end be provided with the sealed cowling, the opening side sliding connection of sealed cowling has the sealing door, the sealed cowling on be provided with air inlet and gas outlet, the sealed board outside lower extreme of deciding of one-level be provided with the sealing colloid, when the buffer unit who has limit function is compressed, when the sealed movable plate extrusion of one-level was on the sealing door promptly, the sealing colloid received the extrusion and can be located the clearance shutoff between the sealed movable plate of one-level between two slide rails and the workstation.
An additive manufacturing gas-shielded sealing method comprising the steps of:
the method comprises the following steps: moving the workbench to a position fitter operation origin;
step two: accurately installing a blank or a tool to be subjected to material addition or welding on a workbench and ensuring that the blank or the tool does not interfere with a sealing cover, a movable laser cladding head or a movable welding tongs in the movement process;
step three: moving the workbench to a position sealing preparation point to prepare for sealing the sealing door;
step four: the sealing door is closed, the workbench moves to the original sealing point after the sealing door is closed, the first sealing rubber strip on the primary sealing movable plate is in contact extrusion with the sealing door, the conical sealing thread rubber head is extruded into the conical hole to radially seal the screw rod, and the gas system starts to work through the gas inlet and the gas outlet to realize the creation of the environment atmosphere in the cabin;
step five: the movable laser cladding head or the movable welding tongs begin to process the blank needing material increase or welding according to the edited program;
step six: after the movable laser cladding head or the movable welding tongs process the blank, opening a gas system to start pressure relief, wherein the environment atmosphere in the reduction cabin is the same as the outside;
step seven: moving the workbench to a sealing preparation point to separate the primary sealing movable plate from the sealing door to prepare for opening the sealing door;
step eight: after the sealing door is opened, moving the workbench to a bench worker operation origin;
step nine: performing bench worker operation on the machined surface of the machined blank;
step ten: repeating the work of the third step to the seventh step after the bench worker operation is finished, repeating the operation of the eighth step to the ninth step if the bench worker operation is required after the material adding or welding is finished, and directly executing the eleventh step after the eighth step if the bench worker operation is not required to be continuously performed;
step eleven: and after all the procedures are completed, moving the workbench to the original operating point of a bench worker to remove the parts, and waiting for the installation of other parts to process.
The invention has the beneficial effects that:
1. the invention can save production time and improve processing efficiency, and meanwhile, as the processed parts do not need to be disassembled, the processed parts are more accurate, the repeated positioning error can be avoided to a certain extent, and the possible error in the additive processing is compensated.
2. The invention can make the alternative operation on the premise that the material adding process or the welding process and the bench work process which need the gas environment do not need to be clamped again.
3. The application of the invention can lead the production of special parts to achieve the purpose of centralized working procedures, improve the intelligent degree, better accord with the modern processing standard and achieve the requirement of realizing mass production of special process parts.
4. Because the invention only seals part of the rack, the usage amount of inert gas is effectively reduced, and the cost is saved.
5. Compared with the traditional mode of modifying the machine tool, the machine tool modified by the structure not only saves cost and resources, but also is more convenient to move after being modified.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a partially enlarged schematic view of a portion a of fig. 1.
Fig. 3 is a top view of the present invention.
Fig. 4 is a cross-sectional view taken at D-D in fig. 3.
Fig. 5 is a partially enlarged schematic view of B in fig. 4.
FIG. 6 is a perspective view of the work bench slidably attached to the slide rails.
Fig. 7 is a perspective view of the primary sealing fixed plate, the primary sealing movable plate and the workbench slidably connected to the slide rail.
Fig. 8 is a partially enlarged schematic view at C in fig. 7.
Fig. 9 is a schematic view of a disassembled structure of a primary sealing fixed plate, a primary sealing movable plate, a conical sealing thread rubber head and a buffering component with a limiting function.
FIG. 10 is a schematic view of the connection of the directional inner guide rod, the primary seal preload spring and the annular pressure plate.
FIG. 11 is a schematic view showing the structure of the connection of the work table, the primary sealing stationary plate, the primary sealing movable plate, the buffer member and the sealing rubber body.
Fig. 12 is a cross-sectional view at E-E in fig. 11.
Fig. 13 is a partially enlarged schematic view at D in fig. 12.
FIG. 14 is a schematic illustration of the regional distribution of the bench work origin, seal origin and seal preparation point.
Detailed Description
Referring to fig. 1 to 14, the additive manufacturing gas protection sealing device includes a sealing cover 1, a rack 2, a sealing door 3, a workbench 4, a primary sealing fixed plate 5, a primary sealing movable plate 6 and a tapered sealing thread rubber head 7, wherein the rack 2 is arranged at the upper end of a base plate 9, and two sliding rails 20 are respectively arranged at the upper end of the rack 2 in parallel;
4 head ends of workstation link firmly one-level sealed board 5 surely, the sealed board 5 outside of deciding of one-level be provided with the sealed thread gluing head 7 of toper that supplies lead screw 12 axial to pass, the sealed board 5 of deciding of one-level be connected with the sealed movable plate 6 of one-level through the buffer unit 8 that has limit function, the sealed movable plate 6 outside of one-level be provided with first joint strip 60, workstation 4, the sealed board 5 of deciding of one-level and the sealed movable plate 6 of one-level all be provided with slide rail 20 assorted first spout 21, workstation 4, the sealed board 5 of deciding of one-level and the sealed movable plate 6 of one-level all through first spout 21 sliding connection on slide rail 20, 2 one end of rack is provided with motor 11, motor 11's rotation is controlled by outside numerical control system, be connected with lead screw 12 in motor 11's the axis of rotation, lead screw 12 run through workstation 4 in proper order, The first-stage sealing fixed plate 5, the conical sealing thread rubber head 7 and the first-stage sealing movable plate 6 are rotationally connected to a support 22 at the tail end of the rack 2, the workbench 4 is connected to the screw rod 12 through a ball screw nut in a sliding mode, a through hole through which the screw rod 12 penetrates through the first-stage sealing movable plate 6 is a conical hole 61, and when the buffer component 8 with the limiting function is compressed, the conical sealing thread rubber head 7 is extruded into the conical hole 61 to seal the screw rod 12;
2 upper ends of rack be provided with the portable laser cladding head or portable electrode holder 100 by outside numerical control system control, 2 one end of rack be provided with sealed cowling 1, the opening side sliding connection of sealed cowling 1 has sealing door 3, sealed cowling 1 on be provided with air inlet and gas outlet, 5 outside lower extremes of one-level sealed fixed plate be provided with sealing colloid 50, when the buffer unit 8 that has limit function is compressed, when 6 extrusion of one-level sealed movable plate was on sealing door 3 promptly, sealing colloid 50 received the extrusion and can be located the clearance shutoff between 6 and the workstation 4 of one-level sealed movable plate between two slide rails 20.
Furthermore, the buffering component 8 with the limiting function is shown to comprise four directional inner guide rods 80 and four primary sealing pre-tightening springs 81, the four corners of the outer side of the primary sealing fixed plate 5 are respectively provided with a cavity for accommodating a primary sealing pre-tightening spring 81 and a directional inner guide rod 80, the four directional inner guide rods 80 are provided with annular pressure plates 82 on the sides close to the primary sealing fixed plate 5, the other ends of the directional inner guide rods 80 are fixedly connected on the primary sealing movable plate 6, the primary sealing pre-tightening spring 81 is arranged in a cavity between the primary sealing fixed plate 5 and the annular pressing plate 82, the inboard both ends of one-level sealed movable plate 6 all be provided with the slider 62 that sets up along lead screw 12 axial direction, the sealed fixed plate 5 both ends of one-level all are provided with the second spout with slider 62 matched with, slider 62 sliding connection just is provided with spacing arch at the slider 62 end in the second spout.
Furthermore, the conical sealing thread rubber head 7 is in a cross petal structure distributed in the radial direction at the conical tip side, so that when the conical sealing thread rubber head 7 is extruded into the conical hole 61, the sealing performance of the lead screw 12 can be further improved.
Furthermore, the lower end of the primary sealing fixed plate 5 is connected with the workbench 4 through an L-shaped connecting plate 51 with a reinforcing rib.
Furthermore, the contour edge of the primary seal moving plate 6 is provided with a secondary seal fixed groove 63, and the first sealing rubber strip 60 is embedded inside the secondary seal fixed groove 63.
Furthermore, two U-shaped plates 10 embedded with second sealing rubber strips are oppositely arranged on two sides of the opening direction of the sealing cover 1 along the gravity direction, and the sealing door 3 is connected between the two U-shaped plates 10 embedded with the sealing rubber strips in a sliding mode.
Furthermore, an inserting groove 40 is arranged on the workbench 4 between the two U-shaped plates 10, a second sealing soft body is arranged inside the inserting groove 40, and the sealing door 3 can slide downwards along the U-shaped plates 10 to the inside of the inserting groove 40 to be in contact with the sealing soft body.
Furthermore, a rack 30 is arranged on the outer side of the sealing door 3, a stepping motor 31 is arranged on the base plate 9 through a stepping motor support 32, a gear 33 meshed with the rack 30 is arranged at the working end of the stepping motor 31, and the gear 33 drives the sealing door 3 to slide up and down in the U-shaped plate 10.
Furthermore, the upper end of the sealing door 3 is provided with a sealing cover glue 34, when the bottom end of the sealing door 3 is inserted into the insertion groove 40, the sealing cover glue 34 can cover the upper end of the sealing cover 1, thereby further improving the sealing property between the upper end of the sealing door 3 and the sealing cover 1.
An additive manufacturing gas-shielded sealing method comprising the steps of:
the method comprises the following steps: moving the workbench 4 to a position bench worker operation origin a; the bench worker operation origin a can be superposed with the part installation origin, and can be an interval or a point; as shown in FIG. 14;
step two: a blank or a tool to be subjected to material addition or welding is accurately arranged on the workbench 4, and the blank or the tool is ensured not to interfere with the sealing cover 1, the movable laser cladding head or the movable welding tongs 100 in the movement process;
step three: moving the workbench 4 to a position sealing preparation point c to prepare for sealing the sealing door 3; the sealing preparation point c can be an interval or a point; as shown in FIG. 14;
step four: the sealing door 3 is closed, the workbench 4 is moved to a sealing original point b after the sealing door 3 is closed, the first sealing rubber strip 60 on the primary sealing movable plate 6 is in contact extrusion with the sealing door 3, the conical sealing thread rubber head 7 is extruded into the conical hole 61, the screw rod 12 is radially sealed, the gas system starts to work through the gas inlet and the gas outlet to realize the construction of the environment atmosphere in the cabin, and the gas system can be an external gas system and aims at exhausting the air in the sealing cover 1 and injecting inert gas;
step five: the movable laser cladding head or the movable welding tongs 100 starts to process the blank needing material increase or welding according to the edited program;
step six: after the movable laser cladding head or the movable welding tongs 100 finishes processing the blank, opening a gas system to start pressure relief, wherein the environment atmosphere in the reduction cabin is the same as the outside;
step seven: moving the workbench 4 to a sealing preparation point c to separate the primary sealing movable plate 6 from the sealing door 3 and prepare for opening the sealing door 3;
step eight: after the sealing door 3 is opened, the workbench 4 is moved to a bench worker operation origin a;
step nine: performing bench worker operation on the machined surface of the machined blank;
step ten: repeating the work of the third step to the seventh step after the bench worker operation is finished, repeating the operation of the eighth step to the ninth step if the bench worker operation is required after the material adding or welding is finished, and directly executing the eleventh step after the eighth step if the bench worker operation is not required to be continuously performed;
step eleven: and after all the working procedures are completed, moving the workbench 4 to the bench worker operation origin a for part unloading, and waiting for other parts to be installed for machining.
The working principle of the invention is as follows:
after the workbench 4 is moved to the position fitter operation origin a, a blank or a tool waiting for material increase or welding is accurately installed on the workbench 4, the workbench 4 is moved to the position sealing preparation point c, the stepping motor 31 is controlled to rotate, the stepping motor 31 drives the rack 30 to move, so that the sealing door 3 moves downwards, the bottom end of the sealing door 3 is inserted into the insertion groove 40, the workbench 4 is moved to the sealing origin b after the sealing door 3 is closed, the first sealing rubber strip 60 on the primary sealing movable plate 6 is in contact with the sealing door 3 and is extruded, the conical sealing thread rubber head 7 is extruded into the conical hole 61, the lead screw 12 is radially sealed, the gas system starts to work through the air inlet and the air outlet to realize the creation of the environment atmosphere in the cabin, the gas system can be an external gas system, the purpose is to exhaust the air in the sealing cover 1 and inject inert gas, the gas system fills the inert gas in the sealing cover 1 as the prior art, after inert gas filling is finished, a movable laser cladding head or a movable welding tongs 100 starts to process a blank needing material addition or welding according to an edited program, after the blank is processed, a gas system is opened to start pressure relief, the environment atmosphere in a reduction cabin is the same as the outside, it needs to be noted that the air pressure in the sealed sealing cover 1 is larger than or equal to the outside pressure, the filling purpose is only to discharge the gas in the sealing cover 1 into inert gas, the workbench 4 is moved to a sealing preparation point c to separate the primary sealing movable plate 6 from the sealing door 3 to prepare for opening the sealing door 3, and after the sealing door 3 is opened, the workbench 4 is moved to a position a to carry out bench work operation or part removal.
Claims (5)
1. An additive manufacturing gas protection sealing device, characterized in that: the sealing device comprises a sealing cover (1), a rack (2), a sealing door (3), a workbench (4), a primary sealing fixed plate (5), a primary sealing movable plate (6) and a conical sealing threaded rubber head (7), wherein the rack (2) is arranged at the upper end of a base plate (9), and two sliding rails (20) are respectively arranged at the upper end of the rack (2) in parallel;
the screw driver is characterized in that a first-level sealing fixed plate (5) is fixedly connected at the head end of the workbench (4), a conical sealing threaded rubber head (7) for a screw rod (12) to axially penetrate is arranged on the outer side of the first-level sealing fixed plate (5), the first-level sealing fixed plate (5) is connected with a first-level sealing movable plate (6) through a buffering component (8) with a limiting function, a first sealing rubber strip (60) is arranged on the outer side of the first-level sealing movable plate (6), the workbench (4), the first-level sealing fixed plate (5) and the first-level sealing movable plate (6) are respectively provided with a first sliding groove (21) matched with a sliding rail (20), the workbench (4), the first-level sealing fixed plate (5) and the first-level sealing movable plate (6) are respectively connected on the sliding rail (20) through the first sliding grooves (21), a motor (11) is arranged at one end of the rack (2), and the rotation of the, a screw rod (12) is connected to a rotating shaft of the motor (11), the screw rod (12) sequentially penetrates through the workbench (4), the primary sealing fixed plate (5), the conical sealing thread rubber head (7) and the primary sealing movable plate (6) and then is rotatably connected to a support (22) at the tail end of the rack (2), the workbench (4) is slidably connected to the screw rod (12) through a ball screw nut, a through hole through which the screw rod (12) passes in the primary sealing movable plate (6) is a conical hole (61), and when the buffering component (8) with the limiting function is compressed, the conical sealing thread rubber head (7) is extruded into the conical hole (61) to seal the screw rod (12);
the upper end of the rack (2) is provided with a movable laser cladding head or a movable welding tongs (100) controlled by an external numerical control system, one end of the rack (2) is provided with a sealing cover (1), the opening side of the sealing cover (1) is connected with a sealing door (3) in a sliding manner, the sealing cover (1) is provided with an air inlet and an air outlet, the lower end of the outer side of the primary sealing fixed plate (5) is provided with a sealing colloid (50), and when the buffer component (8) with the limiting function is compressed, the sealing colloid (50) is extruded to seal a gap between the primary sealing movable plate (6) positioned between the two sliding rails (20) and the workbench (4);
the buffer component (8) with the limiting function comprises four directional inner guide rods (80) and four one-level sealing pre-tightening springs (81), cavities for accommodating the one-level sealing pre-tightening springs (81) and the directional inner guide rods (80) are formed in four corners of the outer side of the one-level sealing fixed plate (5), annular pressing plates (82) are arranged on the four directional inner guide rods (80) close to the one-level sealing fixed plate (5), the other ends of the directional inner guide rods (80) are fixedly connected to the one-level sealing movable plate (6), the one-level sealing pre-tightening springs (81) are arranged in the cavities between the one-level sealing fixed plate (5) and the annular pressing plates (82), sliding blocks (62) arranged along the axial direction of a lead screw (12) are arranged at two ends of the inner side of the one-level sealing movable plate (6), second sliding grooves matched with the sliding blocks (62) are arranged at two ends of the one-level sealing fixed plate (5), the sliding block (62) is connected in the second sliding groove in a sliding mode, and the tail end of the sliding block (62) is provided with a limiting bulge.
The conical tip side of the conical sealing thread rubber head (7) is in a cross petal structure which is radially distributed;
a secondary sealing fixed groove (63) is formed in the edge of the profile of the primary sealing movable plate (6), and a first sealing rubber strip (60) is embedded in the secondary sealing fixed groove (63);
the lower end of the primary sealing fixed plate (5) is connected with the workbench (4) through an L-shaped connecting plate (51) with a reinforcing rib;
sealing boot (1) opening direction both sides be provided with two inside U template (10) that have inlayed second joint strip along the gravity direction relatively, sealing door (3) sliding connection has between two inside U template (10) that have inlayed joint strip.
2. An additive manufactured gas-tight seal according to claim 1, wherein: a plug-in groove (40) is arranged on the workbench (4) between the two U-shaped plates (10), a second sealing soft body is arranged inside the plug-in groove (40), and the sealing door (3) can slide down to the inside of the plug-in groove (40) along the U-shaped plates (10) to be in contact with the sealing soft body.
3. An additive manufactured gas-tight seal according to claim 2, wherein: the outer side of the sealing door (3) is provided with a rack (30), a stepping motor (31) is arranged on the base plate (9) through a stepping motor support (32), a gear (33) meshed with the rack (30) is arranged at the working end of the stepping motor (31), and the gear (33) drives the sealing door (3) to slide up and down in the U-shaped plate (10).
4. An additive manufactured gas-tight seal according to claim 3, wherein: the upper end of the sealing door (3) is provided with a sealing cover plate colloid (34), and when the bottom end of the sealing door (3) is inserted into the insertion groove (40), the sealing cover plate colloid (34) can cover the upper end of the sealing cover (1).
5. A sealing method of an additive manufactured gas-tight seal of claim 1, comprising the steps of:
the method comprises the following steps: moving the workbench (4) to a position bench worker operation origin a;
step two: a blank or a tool to be subjected to material addition or welding is accurately arranged on a workbench (4) and is ensured not to interfere with a sealing cover 1, a movable laser cladding head or a movable welding tongs (100) in the moving process;
step three: moving the workbench (4) to a position sealing preparation point c to prepare for sealing the sealing door 3;
step four: the sealing door (3) is closed, the workbench (4) is moved to a sealing original point b after the sealing door (3) is closed, a first sealing rubber strip (60) on the primary sealing movable plate (6) is in contact extrusion with the sealing door (3), a conical sealing thread rubber head (7) is extruded into a conical hole (61), the screw rod (12) is radially sealed, and a gas system starts to work through a gas inlet and a gas outlet to realize the construction of the environment atmosphere in the cabin;
step five: the movable laser cladding head or the movable welding tongs (100) starts to process the blank needing material increase or welding according to the edited program;
step six: after the movable laser cladding head or the movable welding tongs (100) finishes processing the blank, opening a gas system to start pressure relief, wherein the environment atmosphere in the reduction cabin is the same as the outside;
step seven: moving the workbench (4) to a sealing preparation point c to separate the primary sealing movable plate (6) from the sealing door (3) and prepare for opening the sealing door (3);
step eight: after the sealing door (3) is opened, the workbench (4) is moved to a bench worker operation origin a;
step nine: performing bench worker operation on the machined surface of the machined blank;
step ten: repeating the work of the third step to the seventh step after the bench worker operation is finished, repeating the operation of the eighth step to the ninth step if the bench worker operation is required after the material adding or welding is finished, and directly executing the eleventh step after the eighth step if the bench worker operation is not required to be continuously performed;
step eleven: and after all the working procedures are completed, moving the workbench (4) to a bench worker operation origin a for part unloading, and waiting for other parts to be installed for machining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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