CN113510925B - Automatic workpiece taking and wax-penetrating post-treatment device and method for nonmetallic laser sintering workpiece - Google Patents
Automatic workpiece taking and wax-penetrating post-treatment device and method for nonmetallic laser sintering workpiece Download PDFInfo
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- CN113510925B CN113510925B CN202110390204.0A CN202110390204A CN113510925B CN 113510925 B CN113510925 B CN 113510925B CN 202110390204 A CN202110390204 A CN 202110390204A CN 113510925 B CN113510925 B CN 113510925B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/124—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
- B29C64/129—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask
- B29C64/135—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask the energy source being concentrated, e.g. scanning lasers or focused light sources
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/379—Handling of additively manufactured objects, e.g. using robots
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
- B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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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
- B33Y10/00—Processes of additive manufacturing
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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
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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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
- B33Y40/20—Post-treatment, e.g. curing, coating or polishing
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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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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- 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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Abstract
The invention relates to a device and a method for automatically taking and post-processing a non-metal laser sintering part by means of infiltration, wherein the device for automatically taking and post-processing the non-metal laser sintering part by means of infiltration comprises a infiltration table, a main frame, a piece of wax absorbing paper, an automatic piece taking mechanism, a wax infiltration cylinder and a control system, wherein the infiltration table is fixed on the main frame, the piece of wax absorbing paper and the wax infiltration cylinder are arranged on the infiltration table, a cylinder opening of the wax infiltration cylinder is positioned at the infiltration table, the piece of wax absorbing paper is positioned at one side of a cylinder opening of the wax infiltration cylinder, the automatic piece taking mechanism and the wax infiltration mechanism are connected to the wax infiltration frame, and the wax infiltration frame is fixed on the infiltration table; the automatic picking mechanism comprises a motion mechanism and a clamping mechanism; the wax-infiltration mechanism comprises a wax-infiltration platform, a wax-infiltration net, an angle modulation mechanism and a lifting mechanism, wherein the wax-infiltration platform is positioned at the cylinder opening of the wax-infiltration cylinder and is connected with the angle modulation mechanism. The invention adopts the automatic picking and automatic angle adjusting and wax penetrating method, improves the automation level and reduces the accident caused by human factors.
Description
Technical field:
the invention relates to the technical field of 3D printing post-treatment, in particular to an automatic workpiece taking and wax-penetrating post-treatment device and method for a nonmetal laser sintering workpiece.
The background technology is as follows:
3D printingThe technology is also called additive manufacturing technology, and is a rapid prototyping manufacturing method based on the discrete-stacking principle. Slicing the three-dimensional model by software, outputting the sliced section into a printing program of a 3D printer according to a molding manufacturing track, and then remanufacturing by melting raw materials to generate the part by printing layer by layer. The selective laser sintering technology is one of additive manufacturing technologies, and uses CO 2 The laser is an energy source, and the parts are manufactured by selectively melting the polymer powder material, so that the laser has the advantages of diversified molding materials, wide application, simple molding process, high material utilization rate and the like, and becomes one of the most developed 3D printing technologies.
The selective laser sintering technology is characterized in that due to the manufacturing mode of stacking layers, gaps among layers still cannot be eliminated, and due to the fact that powder materials are used for manufacturing, the surface of a part is inevitably defective, and wax infiltration treatment is needed when the selective laser sintering model is mainly used for lost shape of investment casting. For nonmetallic parts, the existing wax-infiltration treatment device needs to manually put the model into a wax-infiltration cylinder, and the model is manually taken out of the wax-infiltration cylinder and is transferred onto wax-absorbing paper for standing after the wax infiltration is completed.
In summary, the existing nonmetallic paraffin infiltration device has the following defects: the manual intervention is more, and the working intensity is high; the manual work efficiency is low, so that the time of wax infiltration treatment is increased, and the production efficiency is reduced; the wax permeation angle cannot be controlled, so that the wax permeation effect of the part is poor.
The invention comprises the following steps:
the invention aims to provide an automatic workpiece taking and paraffin infiltration post-treatment device for nonmetal laser sintering workpieces, which is used for solving the problems that in the prior art, the paraffin infiltration treatment device needs to manually put a model into a paraffin infiltration cylinder, and has high working strength, low manual working efficiency and poor paraffin infiltration effect; the invention also aims to provide a paraffin infiltration treatment method of the automatic pick-up paraffin infiltration post-treatment device for the nonmetallic laser sintering parts.
The technical scheme adopted for solving the technical problems is as follows: the automatic workpiece taking and wax-infiltrating post-treatment device for the nonmetallic laser sintering workpiece comprises a wax-infiltrating table, a main frame, wax-absorbing paper, an automatic workpiece taking mechanism, a wax-infiltrating cylinder and a control system, wherein the wax-infiltrating table is fixed on the main frame, the wax-absorbing paper and the wax-infiltrating cylinder are arranged on the wax-infiltrating table, a cylinder opening of the wax-infiltrating cylinder is positioned at the wax-infiltrating table, the wax-absorbing paper is positioned at one side of the cylinder opening of the wax-infiltrating cylinder, the automatic workpiece taking mechanism and the wax-infiltrating mechanism are connected to the wax-infiltrating frame, and the wax-infiltrating frame is fixed on the wax-infiltrating table;
the automatic fetching mechanism comprises a moving mechanism and a clamping mechanism, the moving mechanism comprises a moving platform and a guide rail, the guide rail is fixed at the upper end of the wax-impregnated frame, and the moving platform is in sliding connection with the guide rail; the clamping mechanism comprises an air pump, an air pipe, air cylinders, clamps and clamp connecting arms, wherein the air cylinders are respectively arranged at two ends of the air cylinders and the moving platform, the air pump is arranged on the bottom plate of the main frame, the air pump is connected with the air cylinders through the air pipes, the two clamps are hoisted under the moving platform through the corresponding clamp connecting arms, the clamp connecting arms are connected with the piston of the air cylinders, the moving platform is provided with a track along the length direction, and the air cylinder sliding blocks are in sliding connection with the track; the clamp comprises a plurality of clamping columns, limiting plates and a rear shell, wherein the lower end of each clamping column penetrates into a spring, and the springs enable the clamping columns to return to the initial positions in a natural state; the limiting plate is fixed at the shell opening of the rear shell, the tail parts of the clamping columns penetrate through the limiting holes of the limiting plate, so that the front ends of the clamps are closely arranged in a honeycomb shape to form clamping parts, the clamping parts are vertical planes in a natural state, and when two clamps clamp parts, the clamping columns at the stressed positions compress the springs according to the shapes of the parts to form pits to clamp the parts;
the wax-infiltration mechanism comprises a wax-infiltration platform, a wax-infiltration net, an angle-adjusting mechanism and a lifting mechanism, wherein the wax-infiltration platform is positioned at the cylinder opening of the wax-infiltration cylinder and is connected with the angle-adjusting mechanism, so that the angle-adjusting mechanism can control the inclination angle of the wax-infiltration platform; the angle adjusting mechanism is connected with the lifting mechanism, the lifting mechanism controls the wax penetrating platform to move vertically through the angle adjusting mechanism, and the wax penetrating net is arranged on the wax penetrating platform, so that redundant wax liquid returns to the wax penetrating cylinder.
In the above-mentioned scheme motion mechanism is including getting a motor, getting a lead screw, lead screw nut, motion platform, guide rail slider, and the guide rail is fixed in the frame upper end that oozes wax, gets a motor fixed frame one side that oozes wax, and motion platform both ends set up guide rail slider, guide rail slider and guide rail sliding connection set up lead screw nut on the motion platform, get a motor connection and get a lead screw, get a lead screw and motion platform threaded connection through lead screw nut.
The angle adjusting mechanism comprises an angle adjusting motor, an angle adjusting screw rod, an angle adjusting supporting rod and a triangular plate, wherein the angle adjusting motor is fixed above the triangular plate, the angle adjusting motor is connected with the angle adjusting screw rod, the angle adjusting screw rod is in threaded connection with the angle adjusting supporting rod, the upper end of the angle adjusting supporting rod is fixedly connected with the bottom edge of the triangular plate, the lower end of the angle adjusting supporting rod is in rotary connection with the wax penetrating platform, two bottom corners of the triangular plate are respectively connected with a pull rod, and the other end of each pull rod is in rotary connection with the wax penetrating platform; the lifting column of the lifting mechanism is fixed under the top angle of the triangular plate and used for controlling the wax-penetrating platform to move vertically.
The angle adjusting mechanism in the scheme further comprises a motor lead screw connecting column, a Z-shaped fixing plate, a supporting rod connecting piece, a pull rod connecting seat and a right-angle fastener, wherein the angle adjusting motor is connected with the triangular plate through the Z-shaped fixing plate; one end of the pull rod is connected with the triangle through a pull rod connecting seat, and the other end of the pull rod is rotationally connected with the wax seepage platform through a right-angle fastener; the lower end of the angle adjusting support rod is rotationally connected with the wax seepage platform through a support rod connecting piece.
In the above-mentioned scheme elevating system include elevator motor, motor lead screw spliced pole, elevator lead screw, optical axis slider, elevator post, elevator motor sets up below the infiltration candle stick, elevator motor output shaft upper end connection elevator lead screw, elevator post and elevator lead screw threaded connection, and elevator post both sides respectively set up an optical axis, optical axis slider both ends and optical axis sliding connection, through fixed cover and elevator post fixed connection in the middle of the optical axis slider.
The wax permeation treatment method of the automatic workpiece taking and wax permeation post-treatment device for the nonmetallic laser sintering workpiece comprises the following steps:
and 8, reversely moving the cylinder piston, opening the clamp, enabling the nonmetallic part to fall into the center position of the wax sucking paper, keeping the constant temperature of 35 ℃ above the wax penetrating table, and taking out the nonmetallic part after the wax sucking paper sucks the redundant wax liquid.
The invention has the following beneficial effects:
1. according to the invention, the labor force is liberated, the working procedures of manual interference are reduced, the working intensity of workers is reduced, the working efficiency is improved, and the parts with good wax seepage treatment effect are obtained;
2. the multiple working procedures are integrated in the same device, so that the influence of temperature change on the wax permeation treatment effect is reduced;
3. the invention adopts the automatic picking and automatic angle adjusting and wax penetrating method, improves the automation level and reduces the accident caused by human factors;
4. the invention can adjust the wax-penetrating treatment angle and improve the wax-penetrating treatment effect;
5. the invention reduces the manual participation degree, improves the automation level and improves the efficiency of wax permeation treatment.
Description of the drawings:
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a wax permeation mechanism according to the present invention;
FIG. 3 is an enlarged schematic view of the right angle fastener of FIG. 2;
FIG. 4 is a schematic diagram of a right-side view structure of the wax-infiltration mechanism provided by the invention;
FIG. 5 is an enlarged schematic view of the structure shown at I in FIG. 4;
FIG. 6 is a schematic view of the overall structure of the automatic picking mechanism provided by the invention;
FIG. 7 is a schematic diagram of a right-hand view of the automatic picking mechanism provided by the invention;
fig. 8 is an enlarged schematic view of the structure at ii in fig. 6.
In the figure: 1 a main frame; 2, wax absorbing paper; 3, an automatic picking mechanism; 4, a wax seepage mechanism; 5, a wax seepage cylinder; 6, a wax seepage frame; 7, a wax infiltration table; 3.1 motor fixing plate; 3.2, taking out a motor; 3.4, taking a lead screw; 3.5 guide rails; 3.6 a lead screw nut; 3.7 guide rail slide blocks; 3.8 a motion platform; 3.9 bearing seats; 3.10 bearings; 3.11 trachea; 3.12 cylinders; 3.13 clamp connection arms; 3.14 backshells; 3.15 limiting plates; 3.16 springs; 3.17 clamping posts; 4.1, a wax infiltration platform; 4.2, a wax-penetrating net; 4.3, angle adjusting motor; 4.4 motor lead screw connecting column; 4.5 angle adjusting screw rods; 4.6 A Z-shaped fixing plate; 4.7 triangular plates; 4.8 pull rod; 4.9 angle modulation supporting rods; 4.10 strut connectors; 4.11 right angle fasteners; 4.12 optical axis slider; 4.13 optical axis; 4.14 lifting columns; 4.15 lifting a screw rod; 4.16 lifting motor; 4.17 a pull rod connecting seat; 4.18 round nuts; 4.19 double-ended screw.
The specific embodiment is as follows:
the invention is further described with reference to the accompanying drawings:
as shown in fig. 1, the automatic workpiece taking and wax-infiltrating post-treatment device for the nonmetallic laser sintering workpiece comprises a wax-infiltrating table 7, a main frame 1, a wax-absorbing paper 2, an automatic workpiece taking mechanism 3, a wax-infiltrating mechanism 4, a wax-infiltrating cylinder 5 and a control system, wherein the wax-infiltrating table 7 is fixed on the main frame 1, the wax-absorbing paper 2 and the wax-infiltrating cylinder 5 are arranged on the wax-infiltrating table 7, the cylinder opening of the wax-infiltrating cylinder 5 is positioned at the wax-infiltrating table 7, the wax-absorbing paper 2 is positioned at one side of the cylinder opening of the wax-infiltrating cylinder 5, the automatic workpiece taking mechanism 3 and the wax-infiltrating mechanism 4 are connected to the wax-infiltrating frame 6, and the wax-infiltrating frame 6 is fixed on the wax-infiltrating table 7. In order to improve the efficiency, effect and automation degree of the wax-infiltration treatment, the full-automatic process of taking a part, infiltrating wax and sucking wax is realized, namely: the wax absorbing paper 2 and the wax penetrating mechanism 4 are arranged in the same heat insulation equipment. An automatic fetching mechanism 3 is arranged between the wax absorbing paper 2 and the wax penetrating mechanism 4, a motor controls a clamp to move between the wax absorbing paper 2 and the wax penetrating platform 4.1, and a pneumatic system controls the clamp to clamp and open. The wax-infiltration mechanism 4 is provided with an angle adjusting mechanism, so that the wax-infiltration platform 4.1 and the part to be infiltrated can incline at a certain angle, and the lifting mechanism drives the wax-infiltration platform 4.1 to move up and down for wax infiltration treatment. After the wax seepage is completed, the wax seepage platform 4.1 moves out of the liquid level, the clamp clamps the part after the wax seepage, the moving mechanism moves the clamp and the part to the middle of the wax absorbing paper 2, the clamp opens, and the part falls into the wax absorbing paper 2.
Referring to fig. 2, 3, 4, 5, the wax-infiltration mechanism 4 includes: 4.1 parts of wax-impregnated platform, 4.2 parts of wax-impregnated net, an angle adjusting mechanism and a lifting mechanism. The wax-infiltration platform 4.1 is positioned at the opening of the wax-infiltration cylinder 5, and the wax-infiltration platform 4.1 is connected with the angle adjusting mechanism, so that the angle adjusting mechanism can control the inclination angle of the wax-infiltration platform 4.1; the angle adjusting mechanism is connected with the lifting mechanism, and the lifting mechanism can control the wax penetrating platform 4.1 to move vertically through the angle adjusting mechanism; the wax-impregnated net 4.2 is placed on the wax-impregnated platform 4.1 so that the surplus wax liquid can be returned to the wax-impregnated cylinder 5.
The angle modulation mechanism includes: angle modulation motor 4.3, motor lead screw spliced pole 4.4, angle modulation lead screw 4.5, Z fixed plate 4.6, angle modulation branch 4.9, branch connecting piece 4.10, set square 4.7, pull rod 4.8, pull rod connecting seat 4.17 and right angle fastener 4.11. The angle adjusting motor 4.3 is fixed above the triangular plate 4.7, the angle adjusting motor 4.3 is connected with the angle adjusting screw 4.5 through the motor screw connecting column 4.4, the angle adjusting screw 4.5 is in threaded connection with the angle adjusting supporting rod 4.9, and the angle adjusting motor 4.3 rotates to control the angle adjusting supporting rod 4.9 to move in the vertical direction; one end of the pull rod 4.8 is connected with the triangle 4.7 through a pull rod connecting seat, the other end is connected with the right-angle fastener 4.11, and is rotationally connected with the wax-penetrating platform 4.1 through the right-angle fastener 4.11; the connecting seat is fixed at two bottom corners of the triangular plate 4.7, screw holes are formed in the upper ends of the pull rod connecting seat 4.17 and the pull rod 4.8, and the double-headed screw 4.19 penetrates through the screw holes of the two connecting seats and fastens the upper ends of the pull rod connecting seat 4.17 and the pull rod 4.8 together through the round nut 4.18. The upper end of the angle adjusting support rod 4.9 is fixedly connected with the bottom edge of the triangle 4.7, and the lower end of the angle adjusting support rod 4.9 is rotatably connected with the wax seepage platform 4.1 through the support rod connecting piece 4.10. The lifting column 4.14 of the lifting mechanism is fixed under the top angle of the triangular plate 4.7 and is used for controlling the wax-penetrating platform 4.1 to move vertically.
The lifting mechanism comprises: lifting motor 4.16, motor lead screw spliced pole 4.4, lifting lead screw 4.15, optical axis 4.13, optical axis slider 4.12, lifting post 4.14. The upper end of the lifting column 4.14 is connected with a triangle 4.7 in the angle adjusting mechanism, and the lifting column 4.14 moves to drive the triangle 4.7 to move; the lifting motor 4.16 is arranged below the wax permeation table 7, the upper end of an output shaft of the lifting motor is connected with the lifting screw 4.15, the lifting column 4.14 is in threaded connection with the lifting screw 4.15, and the lifting screw 4.15 is driven by the motor to rotate so as to enable the lifting column 4.14 to move in the vertical direction; the two sides of the lifting column 4.14 are respectively provided with an optical axis 4.13, two ends of the optical axis sliding block 4.12 are in sliding connection with the optical axis 4.13, and the middle of the optical axis sliding block 4.12 is fixedly connected with the lifting column 4.14 through a fixing sleeve.
Referring to fig. 6 and 7, the automatic picking mechanism 3 includes: the motion mechanism and the clamping mechanism. The movement mechanism is connected with the wax-penetrating frame 6; the cylinder 3.12 of the clamping mechanism is connected with the moving platform 3.8 of the moving device through bolts.
The motion mechanism comprises: the device comprises a motor, a motor screw connecting column 4.4, a fetching screw 3.4, a motor fixing plate 3.1, a screw nut 3.6, a moving platform 3.8, a guide rail 3.5, a guide rail sliding block 3.7, a bearing seat 3.9 and a bearing 3.10. The motor is fixed with the wax-penetrating frame 6 through a motor fixing plate 3.1; the guide rail 3.5 is fixed at the upper end of the frame of the wax-infiltration device, the fetching motor 3.2 is used for fixing one side of the wax-infiltration frame 6, guide rail sliding blocks 3.7 are arranged at two ends of the moving platform 3.8, the guide rail sliding blocks 3.7 are in sliding connection with the guide rail 3.5, and the guide rail sliding blocks 3.7 can move on the guide rail 3.5; the motion platform 3.8 is connected with the guide rail sliding block 3.7, and the motion platform 3.8 is in sliding connection with the guide rail 3.5 through the guide rail sliding block 3.7, so that the motion platform 3.8 can move along the guide rail 3.5; the screw nut 3.6 is fixed on the moving platform 3.8 and is in threaded connection with the pickup screw 3.4, the pickup motor 3.2 is connected with the pickup screw 3.4 through a motor screw connecting column, the pickup screw 3.4 is in threaded connection with the moving platform 3.8 through the screw nut 3.6, the other end of the pickup screw 3.4 is connected with the bearing 3.10 through the bearing seat 3.9 and the wax-penetrating frame 6, and the motor drives the screw to rotate so that the moving platform 3.8 reciprocates in the horizontal direction.
The clamping mechanism comprises: air pump, trachea 3.11, cylinder 3.12, anchor clamps linking arm 3.13 and various pneumatic auxiliary parts. Two ends of the moving platform 3.8 are respectively provided with an air cylinder 3.12, an air pump is arranged on the bottom plate of the main frame 1, the air pump is connected with the air cylinders 3.12 through air pipes 3.11, two clamps are hoisted under the moving platform 3.8 through corresponding clamp connecting arms, the clamp connecting arms 3.13 are connected with air cylinder sliding blocks (air cylinder pistons), the moving platform 3.8 is provided with a track along the length direction, and the air cylinder sliding blocks are in sliding connection with the track. The air is sent into the air cylinder 3.12 through the air pipe 3.11, and the clamp is connected with the air cylinder slide block through the clamp connecting arm 3.13, so that the air cylinder 3.12 can drive the clamp to open and close.
Referring to fig. 8, the jig includes: a plurality of clamping posts 3.17, springs 3.16, limiting plates 3.15 and a rear shell 3.14. The lower end of each clamping column 3.17 penetrates into a spring 3.16, and the springs 3.16 enable the clamping columns 3.17 to return to the initial position in a natural state; the limiting plate 3.15 is fixed at the shell opening of the rear shell 3.14, the tail parts of the clamping columns 3.17 penetrate through the limiting holes of the limiting plate 3.15, so that the front ends of the clamps are closely arranged to form a honeycomb shape to form clamping parts, the clamping parts are vertical planes in a natural state, and when two clamps clamp parts, the clamping columns at the stressed parts compress springs according to the shapes of the parts to form pits to clamp the parts.
The specific working process of the automatic workpiece taking and wax-penetrating post-treatment device for the nonmetallic laser sintering workpiece comprises the following steps:
after printing, the nonmetallic parts are placed on the wax-absorbing paper 2, the control system controls the motor of the automatic fetching mechanism to work, the moving platform 3.8 moves along the guide rail through the guide rail sliding block 3.7 by rotating the lead screw, and the clamp stops when moving to the position of the parts. Then the air pump starts to work, the generated gas is led to the air cylinder 3.12 through the air pipe 3.11 to push the piston to move, when the piston moves, the clamp connecting arm 3.13 connected to the piston drives the clamp to move towards the center, after the end part of the clamping column 3.17 touches the part, the compression spring 3.16 is moved backwards, so that the part contacted with the part forms a dent, and the part is clamped by the elasticity of the spring 3.16 and the supporting force generated at the dent. Then the automatic pick-up motor works again, the motion platform 3.8 is controlled to move, the parts are conveyed to the position above the wax infiltration platform 4.1, the air cylinder 3.12 is reversely connected, the piston moves to the two sides to control the clamp to loosen, and the parts stably fall onto the wax infiltration net 4.2. The angle adjusting mechanism of the wax-infiltrating device works immediately, the screw rod rotates to enable the angle adjusting supporting rod 4.9 to move upwards, the supporting rod connecting seat rotates relative to the wax-infiltrating platform 4.1, the right-angle fastener 4.11 rotates relative to the pull rod 4.8, and the wax-infiltrating platform 4.1 and parts arranged on the platform generate a certain inclination angle. At the moment, the heating module of the wax permeation cylinder 5 heats the wax liquid in the wax permeation cylinder and keeps the temperature of 70 ℃, the lifting mechanism motor of the wax permeation device works, and the screw rod rotates to drive the lifting column 4.14 and the optical axis sliding block 4.12 to slowly move downwards along the optical axis, so that the wax permeation platform 4.1 and parts are slowly immersed into the wax liquid in the wax permeation cylinder 5. After the wax permeation is completed, the motor of the lifting mechanism reversely rotates to enable the wax permeation platform 4.1 to move upwards and remove the liquid level of the wax permeation cylinder 5, and meanwhile, the motor of the angle adjusting mechanism works to adjust the inclined wax permeation platform 4.1 to be horizontal. When the upper surfaces of the wax-infiltration platform 4.1 and the wax-infiltration cylinder 5 are level, the lifting motor 4.16 stops working. After standing for a while, waiting for redundant wax drops to return to the wax seepage cylinder 5, the pneumatic system works, the cylinder 3.12 drives the clamp to clamp the part after wax seepage is completed, and then the motor of the moving mechanism works to move the clamp and the clamped part to the center position of the wax absorbing paper 2. And then the air cylinder 3.12 moves reversely, the clamp opens, the part falls into the center position of the wax absorbing paper 2, and the constant temperature of 35 ℃ is kept above the wax infiltrating device platform. And after the wax absorbing paper 2 absorbs the excessive wax liquid, taking out the part.
The invention not only improves the working efficiency, the wax-penetrating effect and the automation level of the wax-penetrating treatment, but also reduces the working strength of people, thereby reducing various defects caused by the manual workpiece taking and the wax-penetrating.
Claims (4)
1. Automatic get piece wax permeation aftertreatment device of taking of nonmetal laser sintering piece, its characterized in that: the automatic workpiece taking and wax-infiltrating post-treatment device for the nonmetallic laser sintering workpiece comprises a wax infiltrating table (7), a main frame (1), wax absorbing paper (2), an automatic workpiece taking mechanism (3), a wax infiltrating mechanism (4), a wax infiltrating cylinder (5) and a control system, wherein the wax infiltrating table (7) is fixed on the main frame (1), the wax absorbing paper (2) and the wax infiltrating cylinder (5) are arranged on the wax infiltrating table (7), a cylinder opening of the wax infiltrating cylinder is positioned at the wax infiltrating table, the wax absorbing paper (2) is positioned at one side of the cylinder opening of the wax infiltrating cylinder, the automatic workpiece taking mechanism (3) and the wax infiltrating mechanism (4) are connected to the wax infiltrating frame (6), and the wax infiltrating frame (6) is fixed on the wax infiltrating table (7);
the automatic fetching mechanism comprises a moving mechanism and a clamping mechanism, the moving mechanism comprises a moving platform (3.8) and a guide rail (3.5), the guide rail (3.5) is fixed at the upper end of the wax-impregnated frame (6), and the moving platform (3.8) is in sliding connection with the guide rail (3.5); the clamping mechanism comprises an air pump, an air pipe (3.11), air cylinders (3.12), clamps and clamp connecting arms (3.13), wherein the two ends of the moving platform (3.8) are respectively provided with one air cylinder (3.12), the air pump is arranged on a main frame bottom plate, the air pump is connected with the air cylinders (3.12) through the air pipes (3.11), the two clamps are hoisted under the moving platform (3.8) through the corresponding clamp connecting arms (3.13), the clamp connecting arms (3.13) are connected with the air cylinders (3.12) through pistons, the moving platform (3.8) is provided with a track along the length direction, and a cylinder sliding block is in sliding connection with the track; the clamp comprises a plurality of clamping columns (3.17), limiting plates (3.15) and a rear shell (3.14), wherein the lower end of each clamping column (3.17) penetrates into a spring (3.16), and the springs (3.16) enable the clamping columns (3.17) to return to an initial position in a natural state; the limiting plates (3.15) are fixed at the shell openings of the rear shell (3.14), the tail parts of the clamping columns (3.17) penetrate through limiting holes of the limiting plates (3.15) to enable the front ends of the clamps to be closely arranged in a honeycomb shape to form clamping parts, the clamping parts are vertical planes in a natural state, and when two clamps clamp parts, the clamping columns at stressed parts compress springs according to the shapes of the parts to form pits to clamp the parts;
the wax-infiltration mechanism (4) comprises a wax-infiltration platform (4.1), a wax-infiltration net (4.2), an angle adjusting mechanism and a lifting mechanism, wherein the wax-infiltration platform (4.1) is positioned at the cylinder opening of the wax-infiltration cylinder, and the wax-infiltration platform (4.1) is connected with the angle adjusting mechanism, so that the angle adjusting mechanism can control the inclination angle of the wax-infiltration platform; the angle adjusting mechanism is connected with the lifting mechanism, the lifting mechanism controls the wax penetrating platform to move vertically through the angle adjusting mechanism, and the wax penetrating net (4.2) is arranged on the wax penetrating platform (4.1) so that redundant wax liquid returns to the wax penetrating cylinder (5);
the angle adjusting mechanism comprises an angle adjusting motor (4.3), an angle adjusting lead screw (4.5), an angle adjusting supporting rod (4.9) and a triangular plate (4.7), wherein the angle adjusting motor (4.3) is fixed above the triangular plate (4.7), the angle adjusting motor (4.3) is connected with the angle adjusting lead screw (4.5), the angle adjusting lead screw (4.5) is in threaded connection with the angle adjusting supporting rod (4.9), the upper end of the angle adjusting supporting rod (4.9) is fixedly connected with the bottom edge of the triangular plate (4.7), the lower end of the angle adjusting supporting rod (4.9) is in rotary connection with the wax penetrating platform (4.1), two bottom corners of the triangular plate (4.7) are respectively connected with a pull rod (4.8), and the other end of each pull rod is in rotary connection with the wax penetrating platform (4.1); lifting columns (4.14) of the lifting mechanism are fixed under the top angles of the triangular plates and are used for controlling the wax seepage platform to move vertically;
the angle adjusting mechanism also comprises a motor lead screw connecting column (4.4), a Z-shaped fixing plate (4.6), a supporting rod connecting piece (4.10), a pull rod connecting seat (4.17) and a right-angle fastener (4.11), wherein the angle adjusting motor is connected with a triangular plate (4.7) through the Z-shaped fixing plate (4.6); one end of a pull rod (4.8) is connected with the triangle through a pull rod connecting seat (4.17), and the other end is rotationally connected with the wax-penetrating platform (4.1) through a right-angle fastener (4.11); the lower end of the angle-adjusting support rod is rotationally connected with the wax-penetrating platform (4.1) through a support rod connecting piece (4.10).
2. The automatic pick-up and wax-permeation post-treatment device for nonmetallic laser sintering parts according to claim 1, wherein the device comprises the following components: the motion include get a motor (3.2), get a lead screw (3.4), lead screw nut (3.6), motion platform (3.8), guide rail (3.5), guide rail slider (3.7), guide rail (3.5) are fixed in wax-impregnated frame (6) upper end, get a motor (3.2) fixed wax-impregnated frame (6) one side, motion platform (3.8) both ends set up guide rail slider (3.7), guide rail slider (3.7) and guide rail (3.5) sliding connection, set up lead screw nut (3.6) on motion platform (3.8), get a motor (3.2) and connect and get a lead screw (3.4), get a lead screw (3.4) through lead screw nut (3.6) and motion platform (3.8) threaded connection.
3. The automatic pick-up and wax-permeation post-treatment device for nonmetallic laser sintering parts according to claim 2, wherein the device comprises the following components: the lifting mechanism comprises a lifting motor (4.16), a motor screw rod connecting column (4.4), a lifting screw rod (4.15), an optical axis (4.13), an optical axis sliding block (4.12) and a lifting column (4.14), wherein the lifting motor (4.16) is arranged below a wax permeation table (7), the upper end of an output shaft of the lifting motor (4.16) is connected with the lifting screw rod (4.15), the lifting column (4.14) is in threaded connection with the lifting screw rod (4.15), two sides of the lifting column (4.14) are respectively provided with an optical axis (4.13), two ends of the optical axis sliding block (4.12) are in sliding connection with the optical axis (4.13), and the middle of the optical axis sliding block (4.12) is fixedly connected with the lifting column (4.14) through a fixing sleeve.
4. The method for the waxing treatment of the automatic workpiece taking and waxing post-treatment device for the nonmetallic laser sintering workpieces according to claim 3, which is characterized in that:
step 1, after printing of the nonmetallic part is finished, placing the nonmetallic part on a wax-absorbing paper (2), controlling a workpiece taking motor to work by a control system, enabling a moving platform (3.8) to move along a guide rail (3.5) through rotation of a workpiece taking screw (3.4), and stopping when a clamp moves to the position of the nonmetallic part;
step 2, the air pump starts to work, generated gas is led into the air cylinder through the air pipe to push the piston to move, when the piston moves, the clamp connecting arm (3.13) connected to the piston drives the clamp to move towards the center, after the end part of the clamping column (3.17) touches a nonmetallic part, the compression spring (3.16) is moved backwards, so that a concave is formed at the part contacted with the nonmetallic part, and the nonmetallic part is clamped by the spring force and the supporting force generated at the concave part;
step 3, the pick-up motor works again, the motion platform is controlled to move, the nonmetallic part is conveyed to the position above the wax-infiltration platform (4.1), the air cylinder is reversely connected, the piston moves to the two sides to control the clamp to loosen, and the nonmetallic part stably falls onto the wax-infiltration net (4.2);
step 4, the angle adjusting motor works, the angle adjusting lead screw (4.5) rotates to enable the angle adjusting supporting rod (4.9) to move upwards, the supporting rod connecting piece (4.10) rotates relative to the wax penetrating platform (4.1), the right-angle fastener (4.11) rotates relative to the pull rod (4.8), and a certain inclination angle is formed between the wax penetrating platform (4.1) and a part arranged on the platform;
step 5, heating the wax liquid in the wax permeation cylinder by the wax permeation cylinder heating module, keeping the temperature of 70 ℃, operating a lifting motor, and driving a lifting screw rod (4.15) to rotate so as to drive a lifting column (4.14) and an optical axis sliding block (4.12) to slowly move downwards along an optical axis (4.13), so that a wax permeation platform (4.1) and nonmetallic parts are slowly immersed into the wax liquid in the wax permeation cylinder (5);
step 6, after the wax permeation is finished, the lifting motor (4.16) reversely rotates to enable the wax permeation platform (4.1) to move upwards and remove the liquid level of the wax permeation cylinder, meanwhile, the angle modulation motor (4.3) works to adjust the inclined wax permeation platform (4.1) to be horizontal, and when the upper surfaces of the wax permeation platform and the wax permeation cylinder are level, the lifting motor stops working;
step 7, standing for a moment, after the excessive wax drops return to the wax seepage cylinder, driving the clamp by the cylinder to clamp the nonmetallic part after the wax seepage is completed, then taking a motor to work, and moving the clamp and the clamped nonmetallic part to the center position of the wax absorption paper (2);
and 8, reversely moving the cylinder piston, opening the clamp, enabling the nonmetallic part to fall into the center position of the wax sucking paper, keeping the constant temperature of 35 ℃ above the wax penetrating table, and taking out the nonmetallic part after the wax sucking paper sucks the redundant wax liquid.
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