CN106739028B - Automatic heat treatment equipment for polylactide material die - Google Patents
Automatic heat treatment equipment for polylactide material die Download PDFInfo
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- CN106739028B CN106739028B CN201710102633.7A CN201710102633A CN106739028B CN 106739028 B CN106739028 B CN 106739028B CN 201710102633 A CN201710102633 A CN 201710102633A CN 106739028 B CN106739028 B CN 106739028B
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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
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/02—Thermal after-treatment
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/04—Polyesters derived from hydroxycarboxylic acids
- B29K2067/046—PLA, i.e. polylactic acid or polylactide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/757—Moulds, cores, dies
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
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- Drying Of Solid Materials (AREA)
Abstract
The invention relates to automatic heat treatment equipment for a polylactide material mould, which comprises the following components: automatic roll table, switched workbench, bake out stove main part, switch board, motor I, workstation slide and PT100 temperature sensor, bake out the stove main part and include: main body frame, inner layer structure, maintenance door, heating device, sealed curb plate, workstation discrepancy automatically-controlled door, get material automatically-controlled door and hand door, circular guide rail, promotion cylinder I, promotion cylinder II and the joint that floats, the inner layer structure includes: upper cover plate, left side bottom heat preservation chamber, right side bottom heat preservation chamber, left side inner plating, preceding wind channel stand, back wind channel stand, gusset and ventilative otter board are equipped with 2 air current circulating device at the middle part of maintaining the door, and heating device is fixed in on the upper cover plate. This equipment automation level is high, through increasing air current circulating device, improves inlayer sheet metal structure, forms wind channel I and II, and the air after the guide heating directly does not act on the mould, and the mould is heated evenly, avoids the mould to soften secondary deformation.
Description
Technical Field
The invention relates to the field of heat treatment processes of polylactide material dies, in particular to automatic heat treatment equipment for polylactide material dies.
Background
In the mainstream 3D printing and forming technology, because of the problems of the cost, source and production technology of the used matching material, the melting deposition Forming (FDM) and the three-dimensional printing process (3 DP) are two mature and common printing technologies. The Polylactide (PLA) printing material applied in FDM printing is fully renewable by raw material sources, has no pollution in the production process, and can be biodegraded, so that the product is the most ideal green high polymer material.
With the aging of 3D technology, the precision of the printed finished product mold is qualitatively improved compared with the mold manufactured by the traditional method. Because the printing raw material is subjected to thermal deformation in the fused deposition forming process to generate internal stress, the comprehensive performance of the die is necessarily compensated by heat treatment. In order to achieve the best performance of the physical properties of the mold, it is necessary to heat the PLA material uniformly during the heat treatment. In the prior art, the orientation of the furnace body is fixed after the mold is installed, and when the furnace body heats the mold, one surface or a plurality of surfaces are always directly heated for a long time, so that the mold is secondarily softened and deformed, and the heat treatment effect is influenced. For example: the patent document CN205316963 discloses a vertical heat exchange type alloy baking furnace system which enables heated high-temperature gas to enter from the top through an air outlet and reasonable arrangement of burners, enhances air convection in the furnace, directly acts on the surface of a workpiece, is not suitable for PLA material forming molds, and easily causes secondary softening deformation of the molds; CN105695667 discloses a desktop heat treatment furnace, which utilizes a furnace door opening motor to link a furnace door opening chain and a furnace door, a pulley erects the furnace door opening chain to a certain height, and the furnace door opening motor pulls the furnace door opening chain to drive the furnace door to move, so as to realize the opening and closing of the furnace door.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides automatic heat treatment equipment for a polylactide material mould, which uses an electric heating pipe to heat air in a baking furnace cavity, uniformly bakes and heats a bio-plastic material mould formed by fused deposition in a closed cavity within a certain time range, avoids the mould from softening and secondary deformation, and meets the requirement of the mould heat treatment process; and meanwhile, an automatic roller way and an automatic door are arranged for butting an FDM printing production line, so that the automation level of the whole line is improved.
In order to solve the above technical problems, the present invention provides an automatic heat treatment apparatus for a mold made of polylactide material, comprising: the method comprises the following steps: the automatic roller way comprises an automatic roller way, an exchange type workbench, a baking furnace main body and a control cabinet, and according to the embodiment of the invention, the automatic roller way comprises: the device comprises a rack, an exchange type workbench limiting block, a manual door limiting block, a power roller, a sealing cover plate, a detection switch a and a detection switch b, wherein the exchange type workbench limiting block and the manual door limiting block are positioned at the same end of the rack, the power roller is installed on the rack, the sealing cover plate is arranged between the power rollers and used for forming a heat insulation layer, the detection switch a is arranged close to one end of the exchange type workbench limiting block, and the detection switch b and the detection switch a are arranged at intervals and used for positioning the exchange type workbench; the exchangeable work table is located on the power roller, and includes: the heating device comprises a thermal conduction table top, a heating plate, an adjustable screw rod and a bottom plate, wherein the adjustable screw rod is positioned between the thermal conduction table top and the bottom plate and used for adjusting the height of the thermal conduction table top; the roaster main body is fixed in the frame and near to manual door spacing block one end is set up, includes: main body frame, with inner layer structure, maintenance door, heating device, sealed curb plate, workstation discrepancy automatically-controlled door, get material automatically-controlled door and hand door, circular guide rail, lift cylinder I, lift cylinder II and the joint that floats that main body frame links to each other, wherein, inner layer structure includes: the air-permeable screen plate comprises an upper cover plate, a left bottom heat-insulating cavity, a right bottom heat-insulating cavity, a left inner plate, a front air duct upright post, a rear air duct upright post, rib plates and an air-permeable screen plate, wherein the upper cover plate is respectively connected with the left inner plate, the front air duct upright post and the rear air duct upright post, the left bottom heat-insulating cavity is connected with the left inner plate provided with a plurality of air holes and is positioned below the left inner plate, the front air duct upright post and the rear air duct upright post are respectively positioned at two ends of the right bottom heat-insulating cavity, the rib plates are respectively arranged at the joints of the front air duct upright post, the rear air duct upright post and the upper cover plate, be located the middle part of upper cover plate is equipped with a through-hole for the installation ventilative otter board, it is regional to be equipped with a plurality of pass on the ventilative otter board, it fits to install to maintain the door the top of upper cover plate is used for sealing the upper portion of inner layer structure just forms wind channel I maintain and be equipped with a plurality of air current circulating device on the door, heating device is fixed in just be located on the upper cover plate in the wind channel I the regional top of pass, sealed curb plate with left side inner plate and left side bottom heat preservation chamber link to each other, are used for sealing the left side of inner layer structure just forms wind channel II, just wind channel I is linked together with wind channel II.
Further, the automatic roller way further comprises: the adjustable foot cups are positioned at the bottoms of two sides of the rack and are at least arranged in 3 pairs for adjusting the height and the flatness of the rack; the fixed support is a folding triangular support, two right-angle surfaces of the fixed support can be folded, at least 2 pairs of the fixed support are arranged and symmetrically arranged on two sides of the bottom rack for fixing the rack; the detection switch a and the detection switch b are both proximity switches; the exchange type workbench limiting block is a nylon hard limiting block.
Furthermore, the number of the adjustable screw rods is 4, and the adjustable screw rods are respectively positioned at four top points of the exchange type workbench; the heating plate is made of aluminum.
Further, the heating device includes: fin heating pipe mounting bracket, fin heating pipe, transmission shaft I and ceramic sleeve, wherein, fin heating pipe mounting bracket with the upper cover plate is fixed, and is equipped with a plurality of mounting grooves, the both ends of fin heating pipe are passed through respectively transmission shaft I with ceramic sleeve links to each other, ceramic sleeve is located in the mounting groove.
Furthermore, a plurality of hinge hinges are arranged on one side of the maintenance door, a handle and a plurality of pressing plates are arranged on the other side of the maintenance door, and the airflow circulating device is positioned in the middle of the maintenance door; the circular guide rails are arranged on the front side, the right side and the rear side of the main body frame, the circular guide rails are provided with sliding blocks, and the working table in-out automatic door, the material taking automatic door and the manual door are respectively installed on the corresponding circular guide rails on the front side, the right side and the rear side through the sliding blocks and are used for sealing the front side, the right side and the rear side of the inner layer structure; and the upper part of the sealing side plate is provided with a plurality of through holes for mounting a PT100 temperature sensor.
Further, the automatic heat treatment apparatus further includes: motor I, workstation slide and PT100 temperature sensor, wherein, motor I is located the middle part of frame, the workstation slide is located the inside of inner structure, and along the setting of power cylinder direction of motion, be used for the removal of exchange table, PT100 temperature sensor's sense terminal passes through the through-hole of sealed curb plate is arranged in wind channel I for measure the air current temperature.
Further, the air circulation device includes: the coupling comprises a motor II, a coupling upper flange seat, 4 connecting guide pillars, a coupling lower flange seat, an ethylene propylene diene monomer rubber plate, a water-cooled aluminum plate, a bearing seat, an angular contact ball bearing, a transmission shaft II and an impeller, wherein the coupling upper flange seat and the coupling lower flange seat are assembled through the 4 connecting guide pillars to form the coupling flange seat, the motor II is fixed on the coupling upper flange seat, the water-cooled aluminum plate is assembled with the coupling lower flange seat through the ethylene propylene diene monomer rubber plate, the angular contact ball bearing is installed in the bearing seat, the bearing seat and the transmission shaft II are installed and fixed on the water-cooled aluminum plate in an interference fit manner, through holes are formed in the middle parts of the coupling upper flange seat, the coupling lower flange seat, the ethylene propylene diene monomer rubber plate and the water-cooled aluminum plate, the transmission shaft II is connected with a rotating shaft of the motor II through the coupling, and the impeller is fixed at the tail end of the transmission shaft II; the water-cooling aluminum plate is positioned above the maintenance door and used for heat insulation and heat preservation; the impeller is located above the fin heating pipe in the air duct I.
Further, the number of the hole-type areas and the number of the airflow circulating devices are 2, wherein the impeller is positioned right above the hole-type areas.
Furthermore, the lifting cylinder I is located on the main body frame on the front side and is connected with the workbench access automatic door through the floating joint, and the lifting cylinder II is located on the main body frame on the right side and is connected with the material taking automatic door through the floating joint.
Furthermore, the inner layer structure is a stainless steel sheet metal box body structure.
The invention at least comprises the following beneficial effects:
1) By improving the structure of a conventional heating furnace, adding an airflow circulating device, improving the structure of an inner layer metal plate, improving the airflow circulation of an inner cavity of a furnace body and improving the optimal uniformity of the furnace temperature;
2) An airflow circulating device, namely an impeller and a power component thereof are added to guide the heated air not to directly act on the die, so that secondary deformation caused by softening of the die is avoided;
3) An automatic roller way and an exchange type workbench are added, seamless butt joint with an FDM printing production line can be achieved quickly and conveniently, and full automation of a mold production process is achieved.
Drawings
FIG. 1 is a layout diagram of the structure of the present invention.
Fig. 2 is an isometric view of the robotic roller way of the present invention.
Fig. 3 is a front view of the automatic roller table of the present invention.
Fig. 4 is a partial view of the maintenance door and its accompanying components of the present invention.
Fig. 5 is an exploded view of the air circulation device of the present invention.
Fig. 6 is a view of the inner layer structure of the present invention.
Fig. 7 is an isometric view of a drying oven body according to the present invention.
Wherein, 1, a control cabinet; 2. a main body of the oven; 3. a switching table; 4. an automatic roller bed; 5. an adjustable foot cup; 6. a manual door limiting block; 601. a manual door; 7. a replaceable workbench limiting block; 8. a thermal conductance mesa; 801. a base plate; 9. a powered roller; 10. sealing the cover plate; 11. a frame; 12. an adjustable lead screw; 13. fixing a bracket; 14. heating plates; 1501. a detection switch a; 1502. a detection switch b; 16. a motor I; 17. a handle; 18. pressing a plate; 19. maintaining the door; 20. a hinge; 21. a motor II; 22. a flange seat is arranged on the coupler; 23. connecting the guide post; 24. ethylene propylene diene monomer rubber plate; 25. water-cooling the aluminum plate; 26. a bearing seat; 27. angular contact ball bearings; 28. a vane wheel; 29. a transmission shaft II; 30. a lower flange seat of the coupler; 31. a coupling; 32. a rib plate; 33. a transmission shaft I; 34. a fin heating pipe mounting frame; 35. a ceramic sleeve; 36. a fin heating pipe; 37. an upper cover plate; 3701. a left inner-layer plate; 38. a front air duct upright post; 39. a worktable slide way; 401. a left bottom heat preservation cavity; 402. a right bottom insulation chamber; 41. a PT100 temperature sensor; 42. sealing the side plates; 43. a gas-permeable net plate; 44. a main body frame; 4501. a lifting cylinder I; 4502. a lifting cylinder II; 46. a floating joint; 47. a material taking automatic door; 48. the working table is provided with an automatic door for entrance and exit; 49. a circular guide rail.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to specific examples. The following examples are illustrative only and are not to be construed as limiting the invention.
The present invention proposes an automatic heat treatment apparatus for polylactide material molds, according to an embodiment of the present invention, as shown with reference to fig. 1, 3 and 6, the apparatus comprising: the automatic heat treatment equipment comprises an automatic roller way 4, an exchange type workbench 3, a baking furnace main body 2, a control cabinet 1, a motor I16, a workbench slideway 39 and a PT100 temperature sensor 41, wherein the control cabinet controls the operation of the automatic heat treatment equipment through a PLC (programmable logic controller), the specific connection mode of the control cabinet 1 with the automatic roller way 4, the exchange type workbench 3 and the baking furnace main body 2 is not limited, and the normal operation of the whole equipment can be realized as long as the transmission of control signals of the structure can be realized; motor I is located the middle part of frame 11, the workstation slide is located the inside of inner layer structure, and follows power cylinder 9 direction of motion sets up, is used for the removal of exchange table, PT100 temperature sensor's sense terminal passes through in air duct I is arranged in to the through-hole of sealed curb plate 42, is used for measuring the air current temperature.
According to an embodiment of the present invention, as shown in fig. 2 and 3, the automatic roller table includes: the automatic roller way comprises a rack 11, an exchange type workbench limiting block 7, a manual door limiting block 6, a power roller 9, a sealing cover plate 10, an adjustable foot cup 5, a fixed support 13 and detection switches a1501 and b1502 positioned on the rack, wherein the automatic roller way takes the rack as a basic framework, and the power roller is installed on the rack; according to some embodiments of the present invention, the exchangeable table stopper and the manual door stopper are both located at the same end of the rack, and the exchangeable table stopper and the manual door stopper are both located at one end of the rear side of the rack, and the exchangeable table stoppers are 2 in number and are nylon hard stoppers, preferably, the manual door stopper is located between the exchangeable table stoppers and is used to position a manual door sealed at the rear side of the inner layer structure; the sealing cover plate is arranged between the power rollers and is used for adding a layer of heat insulation layer between the machine frame and the exchange chamber workbench to prevent the machine frame from being heated to cause danger; the adjustable foot cups are positioned at the bottoms of the two sides of the rack and are arranged into 5 pairs for adjusting the height and the flatness of the rack; the fixed support is a folding triangular support, two right-angle surfaces of the fixed support can be folded and are arranged into 2 pairs, and the two right-angle surfaces are symmetrically arranged on two sides of the bottom rack and are used for fixing the rack; according to some embodiments of the invention, the detection switches a and b are both proximity switches, when the exchange type workbench passes through the detection switch b, the exchange type workbench is detected to start to enter the workbench slideway, and when the exchange type workbench reaches the detection switch a, the exchange type workbench stops moving and is positioned through the exchange type workbench limiting block.
According to an embodiment of the invention, illustrated with reference to fig. 2 and 3, the exchange table is located on the powered cylinder, comprising: the heat conduction table comprises a heat conduction table top 8, a heating plate 14, 4 adjustable screw rods 12 and a bottom plate 801, wherein the bottom plate is positioned below the heat conduction table top, the 4 adjustable screw rods are positioned between the heat conduction table top and the bottom plate, specifically, the 4 adjustable screw rods are respectively positioned at four top points of the exchange type workbench and used for adjusting the height of the heat conduction table top, and the heating plate is positioned on the reverse side of the heat conduction table top and used for heating the heat conduction table top and further heating the bottom of a mold; according to some embodiments of the present invention, the material of the heating plate is not limited, and in order to reduce the cost and improve the heat conductivity, the material is preferably made of aluminum.
According to an embodiment of the present invention, as shown in fig. 1, 4, 6 and 7, the roaster oven main body 2 fixed on the housing and disposed near one end of the manual door stopper includes: main body frame 44, with inner layer structure, maintenance door 19, heating device, sealed curb plate 42, workstation discrepancy automatically-controlled door 48, material automatically-controlled door 47 and manual door 601 that main body frame links to each other, circular guide rail 49, lift cylinder I4501, lift cylinder II 4502 and floating joint 46, wherein, inner layer structure is stainless steel panel beating box structure, specifically includes: the upper cover plate 37, the left bottom heat preservation cavity 401, the right bottom heat preservation cavity 402, the left inner plate 3701, the front air duct column 38, the rear air duct column (not shown in the figure), the rib plate 32 and the ventilation screen plate 43, wherein the left bottom heat preservation cavity and the right bottom heat preservation cavity are used as reference components, the upper cover plate is respectively and fixedly connected with the left inner plate, the front air duct column and the rear air duct column through bolts and mounting holes, the left bottom heat preservation cavity and the left inner plate provided with a plurality of air holes are fixedly connected with the mounting holes through bolts and are located below the left inner plate, the front air duct column and the rear air duct column are respectively located at two ends of the right bottom heat preservation cavity so as to form a heating cavity of the oven body, the rib plate is arranged at the connection positions of the front air duct column, the rear air duct column and the upper cover plate, a through hole is arranged in the middle of the upper cover plate for mounting the ventilation screen plate, 2 hole type areas are arranged on the ventilation screen plate, the areas are circular areas and are arranged at intervals, and form an airflow channel with the heating cavity of the oven body; the maintenance door is arranged above the upper cover plate in a fit mode and used for sealing the upper portion of the inner layer structure and forming an air channel I, 2 air flow circulating devices are arranged in the middle of the maintenance door, are located right above the hole type area and are used for absorbing high-temperature air in the heating cavity of the baking oven main body; heating device is fixed in on the upper cover plate in wind channel I and be located the regional top of pass, sealed curb plate with left side inner plating and left side bottom heat preservation chamber carry out the stationary phase through bolt and mounting hole and link to each other for it is sealed the left side of inner layer structure just forms wind channel II, just wind channel I is linked together with wind channel II.
According to the embodiment of the invention, the lifting cylinder I and the lifting cylinder II are both provided with electromagnetic valves or magnetic switches.
According to the embodiment of the invention, as shown in fig. 4, at least 3 hinge hinges 20 are arranged on one side of the maintenance door, a handle 17 and at least 2 pressing plates 18 are arranged on the other side of the maintenance door, and the hinge hinges and the pressing plates are connected with the upper edge of the inner layer structure through screws.
According to an embodiment of the present invention, as shown with reference to fig. 6, the heating apparatus includes: fin heating pipe mounting bracket 34, fin heating pipe 36, transmission shaft I33 and ceramic sleeve 35, wherein, fin heating pipe mounting bracket with the upper cover plate is fixed, and is equipped with a plurality of mounting grooves, the both ends of fin heating pipe are passed through respectively transmission shaft I with ceramic sleeve links to each other, ceramic sleeve is located in the mounting groove, be used for the fin heating pipe with thermal-insulated and separate the electricity between the inner layer structure upper cover plate.
According to the embodiment of the present invention, as shown in fig. 1 and 7, the circular guide rails are respectively disposed on the front side, the right side and the rear side of the main body frame, the circular guide rails are provided with sliders, and the workbench access automatic door 48, the material taking automatic door 47 and the manual door 601 are respectively mounted on the corresponding circular guide rails on the front side, the right side and the rear side through the sliders, so as to seal the front side, the right side and the rear side of the inner layer structure; the upper part of the sealing side plate is provided with a plurality of through holes for mounting PT100 temperature sensors, the number of the PT100 temperature sensors is not limited, and the PT100 temperature sensors can be arranged according to actual production requirements; the lifting cylinder I is located on the main body frame on the front side and connected with the automatic material taking door through the floating joint, and the lifting cylinder II is located on the main body frame on the right side and connected with the automatic material taking door through the floating joint. The lifting air cylinders I and II provide linear reciprocating motion power, and the material taking automatic door 47 and the workbench in-and-out automatic door 48 both move linearly along the circular guide rail 49, so that the automatic process is realized.
According to an embodiment of the present invention, as shown in fig. 5, the air circulation device includes: the electric coupler comprises a motor II 21, a coupler upper flange seat 22, 4 connecting guide pillars 23, a coupler 31, a coupler lower flange seat 30, an ethylene propylene diene monomer rubber plate 24, a water-cooled aluminum plate 25, a bearing seat 26, an angular contact ball bearing 27, a transmission shaft II 29 and an impeller 28, wherein the coupler upper flange seat and the coupler lower flange seat are assembled to form the coupler flange seat through the 4 connecting guide pillars, the motor II is fixed on the coupler upper flange seat, the water-cooled aluminum plate is assembled with the coupler lower flange seat through the ethylene propylene diene monomer rubber plate, and the ethylene propylene diene monomer rubber has the characteristics of high temperature resistance at 200 ℃ and elasticity, so that the heat insulation and heat preservation functions of the water-cooled aluminum plate and a maintenance door 19 can be realized; the angular contact ball bearing is installed in the bearing seat, the bearing seat and the transmission shaft II are installed and fixed on the water-cooling aluminum plate through interference fit, and through holes are formed in the middle parts of the upper flange seat of the coupler, the lower flange seat of the coupler, the ethylene propylene diene monomer rubber plate and the water-cooling aluminum plate, so that the transmission shaft II is connected with a rotating shaft of the motor II through the coupler to realize power transmission, and the impeller is fixed at the tail end of the transmission shaft II and is fixed through a jackscrew; the water-cooling aluminum plate is positioned above the maintenance door and used for heat insulation and heat preservation; the impeller is located above the fin heating pipe in the air duct I.
According to the embodiment of the invention, the specific working principle of the automatic heat treatment equipment for the polylactide material mold is as follows: the heat treatment equipment is butted with a power roller way of an FDM printing line through an automatic roller way 4, when the heat treatment equipment works, a control cabinet 1 sends signals to a lifting cylinder I4501, a lifting cylinder II 4502 and a motor I16, the lifting cylinder I enables an automatic working table in-and-out door 48 to be opened, the lifting cylinder II enables a material taking automatic door 47 to be closed, the motor I is started to further control the starting of the automatic roller way and send signals to an exchange type working table 3, a carrier polylactide material mold enters a heating cavity of a baking furnace main body 2 through the automatic roller way 4 and moves to a working table slideway 39, the detection switches a1501, b1502 and an exchange type working table limiting block 7 are used for positioning, when the exchange type working table moves in place, the signals are sent to the control cabinet 1, and then the control cabinet 1 sends signals to the motor I, an electromagnetic valve of the lifting cylinder I, a heating device and the exchange type working table respectively, controlling a motor I to stop rotating, controlling a workbench I to be closed through an automatic access door 48 by a lifting cylinder I, starting a heating device to heat air in an inner cavity of a furnace body, specifically, electrically heating a fin heating pipe 36 to carry out heat treatment on a die, simultaneously starting heating of a heating plate 14 of an exchange workbench to heat a heat conducting table surface, further carrying out heat treatment on the bottom of the die, simultaneously sending a control signal to an air flow circulating device by a control cabinet, controlling a motor II 21 to rotate, enabling two impellers 28 to rotate oppositely, absorbing high-temperature air in the heating cavity of a baking furnace body through a hole pattern area of a ventilating net plate 43 on an inner layer structure, enabling air flow to sequentially pass through an air channel I and an air channel II and then flow back into the heating cavity through air holes on a left inner layer plate 3701, guiding the heated air not to directly act on the die, but passing through the air channel I, the heat conducting plate I and the heat conducting plate, II, the liquid flows back to the heating cavity, so that secondary softening deformation of the die is avoided; after a period of time, after the heat treatment of the mold is finished, the control cabinet 1 sends signals to the electromagnetic valve of the lifting cylinder II 4502, the heating device and the exchange workbench, heating plates of the heating device and the exchange workbench stop heating, the lifting cylinder II controls the material taking automatic door 47 to open, and the polylactide material mold after the heat treatment is finished is taken out.
The inventor finds that according to the embodiment of the invention, the automatic heat treatment equipment improves the structure of a conventional heating furnace, increases an airflow circulating device, improves the structure of an inner layer metal plate, improves the airflow circulation of the inner cavity of the furnace body, and improves the optimal uniformity of the furnace temperature; meanwhile, an airflow circulating device, namely an impeller and a power component thereof, is added to guide the heated air not to directly act on the die, so that secondary deformation caused by softening of the die is avoided; in addition, an automatic roller way and an exchange type workbench are added, seamless butt joint with an FDM printing production line can be achieved quickly and conveniently, and full automation of a mold production process is achieved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be a mechanical connection or a point connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Although embodiments of the present invention have been shown and described, it is understood that the embodiments are illustrative and not restrictive, that changes, modifications, substitutions and alterations may be made herein without departing from the spirit and scope of the invention, and that these embodiments may be modified by those skilled in the art without departing from the spirit and scope of the present application.
Claims (10)
1. An automated thermal processing apparatus for polylactide material molds, comprising: automatic roll table, switched workbench, oven main part and switch board, its characterized in that:
the automatic roller way comprises: the device comprises a rack, an exchange type workbench limiting block, a manual door limiting block, power rollers, a sealing cover plate, a detection switch a and a detection switch b, wherein the exchange type workbench limiting block and the manual door limiting block are positioned at the same end of the rack, the power rollers are arranged on the rack, the sealing cover plate is arranged between the power rollers and used for forming a heat insulation layer, the detection switch a is arranged close to one end of the exchange type workbench limiting block, and the detection switch b and the detection switch a are arranged at intervals and used for positioning the exchange type workbench;
the exchangeable work table is located on the power roller, and includes: the heating device comprises a thermal conduction table top, a heating plate, an adjustable screw rod and a bottom plate, wherein the adjustable screw rod is positioned between the thermal conduction table top and the bottom plate and used for adjusting the height of the thermal conduction table top;
the roaster main body is fixed in the frame and close to the setting of manual door spacing block one end, include: the automatic material taking and feeding device comprises a main body frame, an inner layer structure, a maintenance door, a heating device, a sealing side plate, a workbench inlet and outlet automatic door, a material taking automatic door and a manual door, a circular guide rail, a lifting cylinder I, a lifting cylinder II and a floating joint, wherein the inner layer structure is connected with the main body frame; wherein the inner layer structure comprises: the air duct heat preservation structure comprises an upper cover plate, a left side bottom heat preservation cavity, a right side bottom heat preservation cavity, a left side inner layer plate, a front air duct column, a rear air duct column, rib plates and a ventilation screen plate, wherein the upper cover plate is respectively connected with the left side inner layer plate, the front air duct column and the rear air duct column;
the heat treatment equipment is butted with an FDM printing line power roller way through an automatic roller way, when the heat treatment equipment works, a control cabinet sends signals to a lifting cylinder I and a lifting cylinder II, the lifting cylinder I enables a workbench to come in and go out an automatic door and is opened, the lifting cylinder II enables a material taking automatic door to be closed and controls the automatic roller way to be started, and simultaneously sends signals to an exchange type workbench, a carrier polylactide material mold enters a heating cavity of a baking furnace main body through the automatic roller way and is positioned through detection switches a and b and an exchange type workbench stopper, when the exchange type workbench moves in place, the signal is sent to the control cabinet, and then the control cabinet sends signals to an electromagnetic valve, a heating device and the exchange type workbench of the lifting cylinder I respectively, the lifting cylinder I controls the workbench to be closed when the automatic door is opened and closed, the heating device starts to heat air in the inner cavity of the furnace body, specifically, the mold is subjected to heat treatment, the heating plate of the exchange workbench simultaneously starts to heat the heat conduction table top, further, the bottom of the mold is subjected to heat treatment, meanwhile, the control cabinet sends a control signal to the air flow circulating device, high-temperature air in the heating cavity of the baking furnace body is absorbed through the hole pattern area of the air-permeable screen plate, the air flow sequentially passes through the air channel I and the air channel II and then flows back into the heating cavity through the air holes in the left inner layer plate, the heated air is guided not to directly act on the mold, but flows back into the heating cavity through the air channels I and II in the inner layer structure, and softening secondary deformation of the mold is avoided; after a period of time, after the heat treatment of the die is finished, the control cabinet sends signals to the electromagnetic valve of the lifting cylinder II, the heating device and the exchange type workbench, heating plates of the heating device and the exchange type workbench are all stopped to be heated, the lifting cylinder II controls the material taking automatic door to be opened, and the polylactide material die after the heat treatment is taken out.
2. The automated thermal processing apparatus of claim 1, wherein the automated roller table further comprises: the adjustable foot cups are positioned at the bottoms of two sides of the rack and are at least arranged in 3 pairs for adjusting the height and the flatness of the rack; the fixed support is a folding triangular support, two right-angle surfaces can be folded, at least 2 pairs of the fixed support are arranged and symmetrically arranged at two sides of the bottom rack for fixing the rack; the detection switch a and the detection switch b are both proximity switches; the exchange type workbench limiting block is nylon hard limiting.
3. The automated thermal processing apparatus of claim 1, wherein said adjustable lead screws are provided in 4 numbers, respectively at four vertices of said exchange table; the heating plate is made of aluminum.
4. The automated thermal processing apparatus of claim 1, wherein said heating device comprises: fin heating pipe mounting bracket, fin heating pipe, transmission shaft I and ceramic sleeve, wherein, fin heating pipe mounting bracket with the upper cover plate is fixed, and is equipped with a plurality of mounting grooves, the both ends of fin heating pipe are passed through respectively transmission shaft I with ceramic sleeve links to each other, ceramic sleeve is located in the mounting groove.
5. The automated thermal processing apparatus of claim 1, wherein a plurality of hinge hinges are provided at one side of said maintenance door, a handle and a plurality of pressing plates are provided at the other side, and said air circulation device is located at the middle of said maintenance door; the circular guide rails are arranged on the front side, the right side and the rear side of the main body frame, the circular guide rails are provided with sliding blocks, and the working table in-out automatic door, the material taking automatic door and the manual door are respectively installed on the corresponding circular guide rails on the front side, the right side and the rear side through the sliding blocks and are used for sealing the front side, the right side and the rear side of the inner layer structure; and the upper part of the sealing side plate is provided with a plurality of through holes for mounting a PT100 temperature sensor.
6. The automated heat treatment apparatus according to claim 1 or 5, further comprising: motor I, workstation slide and PT100 temperature sensor, wherein, motor I is located the middle part of frame, the workstation slide is located the inside of inner layer structure, and follow power cylinder direction of motion sets up, is used for the removal of exchange workstation, PT100 temperature sensor's sense terminal passes through the through-hole of sealed curb plate is arranged in wind channel I for measure the air current temperature.
7. The automated thermal processing apparatus of claim 1, wherein said gas flow circulation means comprises: the coupling structure comprises a motor II, a coupling upper flange seat, 4 connecting guide pillars, a coupling lower flange seat, an ethylene propylene diene monomer rubber plate, a water-cooled aluminum plate, a bearing seat, an angular contact ball bearing, a transmission shaft II and an impeller, wherein the coupling upper flange seat and the coupling lower flange seat are assembled to form the coupling flange seat through the 4 connecting guide pillars; the water-cooling aluminum plate is positioned above the maintenance door and used for heat insulation and heat preservation; the impeller is located above the fin heating pipe in the air duct I.
8. The automated thermal processing apparatus according to claim 7, wherein the hole-shaped region and the gas flow circulation device are each provided in 2, wherein the impeller is located directly above the hole-shaped region.
9. The automated thermal processing equipment according to claim 1, wherein the lifting cylinder i is located on the main frame on the front side and connected to the automatic door for table entry and exit through the floating joint, and the lifting cylinder ii is located on the main frame on the right side and connected to the automatic door for material taking through the floating joint.
10. The automated heat treatment apparatus of claim 1, wherein the inner layer structure is a stainless steel sheet metal box structure.
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| CN201710102633.7A CN106739028B (en) | 2017-02-24 | 2017-02-24 | Automatic heat treatment equipment for polylactide material die |
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