CN112549361A - Carbon-carbon crucible blank near-net forming equipment and forming method - Google Patents
Carbon-carbon crucible blank near-net forming equipment and forming method Download PDFInfo
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- CN112549361A CN112549361A CN202011353405.5A CN202011353405A CN112549361A CN 112549361 A CN112549361 A CN 112549361A CN 202011353405 A CN202011353405 A CN 202011353405A CN 112549361 A CN112549361 A CN 112549361A
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- CREMABGTGYGIQB-UHFFFAOYSA-N carbon carbon Chemical compound C.C CREMABGTGYGIQB-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 239000011203 carbon fibre reinforced carbon Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 5
- 239000004917 carbon fiber Substances 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002296 pyrolytic carbon Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
- B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
- Ceramic Products (AREA)
Abstract
The invention discloses a carbon-carbon crucible blank near-net forming device, which comprises: a forming die, a positioning rotating device; the forming die comprises: the upper male die is inserted into the lower female die from an opening at the upper end of the lower female die, and the periphery of the upper male die is matched with the inner wall of the lower female die to form a rotary cavity; the die carrier comprises a first die carrier and a second die carrier which are relatively positioned above an opening at the upper end of the lower female die and are arranged along the radial direction of the rotary cavity, and a die carrier cambered surface matched with the periphery of the rotary cavity is arranged on the first die carrier and the second die carrier; the positioning and rotating device comprises: the device comprises a moving platform, a mounting seat, a rotating shaft, a workbench and a rotating head, wherein the mounting seat is erected on the moving platform through an elastic jacking assembly, the rotating shaft is arranged on the mounting seat, a lower female die is mounted at the upper end of the rotating shaft, and the lower end of the rotating shaft is in transmission connection with the rotating head through a clutch mechanism; a positioning structure and a suction fastening part are also arranged between the lower end of the mounting seat and the upper end of the workbench. The invention also discloses a near-net forming method, aiming at improving the density of the carbon-carbon crucible blank and improving the service performance of the carbon-carbon crucible blank.
Description
Technical Field
The invention relates to the technical field of carbon material preparation, in particular to carbon-carbon crucible blank near-net forming equipment and a forming method.
Background
The carbon-carbon composite material is a pure carbon multiphase structure which takes carbon fibers or fabrics thereof as a reinforcing phase and takes pyrolytic carbon permeated by chemical vapor or resin carbon impregnated and carbonized by liquid phase and pitch carbon as a matrix. The high-strength high-thermal-conductivity high-strength high-specific-modulus heat-insulating material has the advantages of low density, high strength, high specific modulus, high thermal conductivity, low expansion coefficient, high friction performance, high thermal shock resistance, high dimensional stability and the like. The crucible made of the carbon-carbon composite material has great application in the aspects of smelting metal, rare and noble metal and nonmetal.
However, the carbon-carbon crucible is usually made from a carbon fiber woven blank by cutting, dipping, carbonizing, polishing and other steps, however, in the cutting step, a single side needs to be cut off by 3-5 mm, although a smooth surface can be obtained, the carbon fibers in the blank and on the surface are not tight enough, so that the texture is loose, and the final strong hardness of the product is affected; on the other hand, the machining process will cause waste of material, and the manufacturing cost of the carbon fiber woven body itself will be high, so that it is necessary to further improve the existing production equipment and method.
Disclosure of Invention
In view of the above, the present invention provides a carbon-carbon crucible blank near-net forming apparatus and a forming method thereof, so as to improve the density of the carbon-carbon crucible blank and improve the service performance of the product; the material is saved, so that the mold has better positioning accuracy during forming and processing, and the size of the product is ensured.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the invention provides a carbon-carbon crucible blank near-net forming device, which comprises: a forming die and a positioning and rotating device;
the forming die includes: the upper male die is inserted into the lower female die from an opening at the upper end of the lower female die, and the periphery of the upper male die is matched with the inner wall of the lower female die to form a rotary cavity; the die carrier comprises a first die carrier and a second die carrier which are relatively positioned above an opening at the upper end of the lower female die and are arranged along the radial direction of the rotary cavity, and die carrier cambered surfaces matched with the periphery of the rotary cavity are arranged on one sides of the first die carrier and the second die carrier, which are close to the axis of the rotary cavity;
the positioning and rotating device comprises: the mounting seat is erected on the moving platform through an elastic jacking assembly, the rotating shaft is arranged on the mounting seat in a rotating mode around a vertical shaft, the upper end of the rotating shaft is coaxially provided with the lower female die, and the lower end of the rotating shaft is in transmission connection with the rotating head arranged on the working platform through a clutch mechanism; and a positioning structure and a suction fastening part are also arranged between the lower end of the mounting seat and the upper end of the workbench.
Further, still include the frame, the frame top is provided with the mounting bracket through the lift subassembly, go up the terrace die and rotate around vertical axle and install on the mounting bracket.
Furthermore, the die carrier cambered surface is provided with a roller rotating around a horizontal shaft.
Furthermore, a first discharging frame and a second discharging frame are arranged at the opening at the upper end of the lower concave die oppositely, and are arranged along the rotary cavity in a radial moving manner, and limiting teeth for limiting the upper end of the blank body are arranged on the first discharging frame and the second discharging frame.
Further, still include the radial movement mechanism who is used for driving first die carrier, second die carrier, first unloading frame, the removal of second unloading frame, it includes: a door-shaped guide frame and a telescopic rod which are arranged along the radial movement of the rotary cavity.
Further, the lower concave die comprises: the die comprises a rotary die holder and at least two arc-shaped templates, wherein the arc-shaped templates are assembled to form a ring, and the lower end of the arc-shaped template is detachably arranged on the die holder.
Further, the clutch mechanism includes: the positioning holes are arranged on one end part of the rotating shaft and the rotating head, and the positioning pins are arranged on the other end parts of the rotating shaft and the rotating head.
Furthermore, the positioning pin moves along the axis direction and is arranged in an installation hole at the end part of the rotating head, and a spring used for elastically ejecting the positioning pin is also arranged in the installation hole.
Further, the positioning structure includes: the positioning device comprises an inverted cone head and an inverted cone hole, wherein the inverted cone head is coaxially arranged at the lower end of the mounting seat with the rotating shaft, the inverted cone hole is arranged at the upper end of the workbench, and the inverted cone head is inserted into the inverted cone hole to realize positioning.
Furthermore, the suction fastening part is an electromagnetic chuck, and the lower end surface of the mounting seat is provided with a suction part which is sucked with the electromagnetic chuck.
Further, still include: the guide rail, the transmission screw assembly that the equality set up, moving platform moving rack locates on the guide rail, moving platform passes through the transmission screw assembly and realizes lateral shifting.
The forming method of the carbon-carbon crucible blank near-net forming equipment comprises the following steps:
s1, loading a blank: placing a carbon-carbon crucible blank at an opening at the upper end of a lower female die;
s2, mold closing: firstly, moving an upper male die downwards to be in initial contact with and tightly pushed against the upper end of a carbon-carbon crucible blank, and stopping; secondly, the first mold frame and the second mold frame move close to the axis direction, and the outer circumferential surface of the carbon-carbon crucible blank is clamped through the arc surfaces of the mold frames;
s3, pressing near net shape: the upper male die continuously moves downwards to press the carbon-carbon crucible blank into the lower female die;
s4, demolding: and the upper male die moves back to the initial position, and then the carbon-carbon crucible blank is taken out from the lower female die.
Further, in S3: when the upper male die moves downwards to press the carbon-carbon crucible blank into the lower female die, the upper male die and the lower female die rotate around the axis, and the rotation directions are opposite.
Compared with the prior art, the invention has the beneficial effects that: improve the density of the carbon-carbon crucible blank and improve the service performance of the product.
1. The invention adopts the two-way extrusion densification of the inner surface and the outer surface of the carbon-carbon crucible blank, namely when the upper male die and the lower female die rotate around different directions, the braided fiber in the blank is twisted and interwoven, and compared with the common straight-in and straight-out type die, the invention ensures the interface tightness, reduces the axial deformation degree of the blank when being extruded and reduces the cutting amount of subsequent correction processing.
2. The double-sided extrusion near-net forming method provided by the invention increases the internal density of the blank, especially the density on each interface, saves materials, reduces the time of subsequent machining and reduces the cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic main sectional structure of a carbon-carbon crucible blank;
FIG. 2 is a schematic main sectional view in an embodiment of the present invention;
FIG. 3 is a schematic top view of the FIG. 2 embodiment of the present invention;
FIG. 4 is a side view of the lower punch of FIG. 2 according to the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 2;
FIG. 6 is an enlarged view of a portion of the structure shown at B in FIG. 2 according to the present invention.
In the figure: 1. a forming die; 100. a frame; 101. a lifting assembly; 102. a mounting frame; 11. an upper male die; 12. a lower concave die; 121. a die holder; 122. an arc-shaped template; 13. a mold frame; 131. a first mold frame; 132. a second mold frame; 133. a mould frame cambered surface; 134. a roller; 135. a first discharge frame; 136. a second discharge frame; 137. limiting teeth; 138. a door-shaped guide frame; 139. a telescopic rod; 2. positioning a rotating device; 200. a guide rail; 201. a drive screw assembly; 21. a mobile platform; 22. a mounting seat; 23. a rotating shaft; 24. a work table; 25. rotating the head; 26. an elastic jacking assembly; 27. a clutch mechanism; 271. positioning holes; 272. positioning pins; 273. mounting holes; 274. a spring; 28. a positioning structure; 281. an inverted conical head; 282. an inverted conical bore; 29. and (5) attracting the fastening part.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, in one embodiment, the present invention provides a carbon-carbon crucible blank near-net-shape forming apparatus, including: a forming die 1 and a positioning and rotating device 2;
the forming die 1 includes: the blank forming device comprises an upper male die 11, a lower female die 12 and a die frame 13, wherein the peripheral dimension of the upper male die 11 is the dimension of the inner wall of a blank after being extruded, the dimension of the inner wall of the lower female die 12 is the dimension of the outer wall of the blank after being extruded, when the upper male die 11 is inserted into the blank from the opening at the upper end of the lower female die 12, the periphery of the upper male die and the inner wall of the lower female die 12 are matched to form a rotary die cavity, namely, after the outer wall and the inner wall of the blank are extruded by the simultaneous action of the upper male die 11 and the lower female die 12, a finally formed blank with dense; the die carrier 13 comprises a first die carrier 131 and a second die carrier 132 which are relatively positioned above the opening at the upper end of the lower female die 12 and are arranged along the radial direction of the rotary cavity, and a die carrier cambered surface 133 matched with the periphery of the rotary cavity is arranged on one side of the first die carrier 131 and one side of the second die carrier 132 close to the axis of the rotary cavity; the outer circumference of the blank is protected and limited by the die carrier cambered surfaces 133 on the first die carrier 131 and the second die carrier 132, so that the situation that the blank is skewed and damaged in the extrusion process is effectively prevented;
the positioning and rotating device 2 includes: the mounting seat 22 is erected on the moving platform 21 through an elastic jacking assembly 26, the jacking assembly 26 can be composed of a jacking spring sleeved on the periphery of a screw rod, the purpose is to enable the mounting seat 22 to be located at the highest limit position on the moving platform 21, the rotating shaft 23 is arranged on the mounting seat 22 in a rotating mode around a vertical shaft, the lower concave die 12 is coaxially arranged at the upper end of the rotating shaft 23 and can be installed through a bearing assembly, the lower end of the rotating shaft is in transmission connection with the rotating head 25 arranged on the working platform 24 through a clutch mechanism 27, and the rotating head 25 is driven by a speed reducer to rotate around the vertical shaft; a positioning structure 28 and an attraction fastening part 29 are further arranged between the lower end of the mounting seat 22 and the upper end of the workbench 24, when the mounting seat 22 is positioned above the workbench 24, the attraction fastening part 29 works to enable the mounting seat 22 to move downwards, then under the action of the positioning structure 28, the mounting seat 22 is rapidly positioned on the workbench 24, the concentricity of the lower female die 12 and the upper male die is ensured, and the size deviation is reduced.
In this embodiment, preferably, the stamping die further comprises a frame 100, a mounting frame 102 is arranged above the frame through a lifting assembly 101, the upper male die 11 is rotatably mounted on the mounting frame 102 around a vertical shaft, the upper male die 11 can be rotatably mounted on the mounting frame 102 around the vertical shaft through a bearing assembly, a speed reducer is arranged on the mounting frame 102, and the speed reducer is in transmission connection with the upper end of the upper male die 11 to drive the upper male die to rotate. The lifting assembly 101 comprises a vertically arranged guide rod and a vertically arranged hydraulic cylinder, the lower ends of the guide rod and the hydraulic cylinder are fixed, and the upper end of the guide rod and the hydraulic cylinder is connected with the mounting frame 102 and used for driving the mounting frame 102 to drive the upper male die 11 to press down.
In this embodiment, preferably, the mold frame arc surface 133 is provided with a roller 134 rotating around a horizontal axis. The rollers 134 are arranged in multiple sets along the axis for reducing the frictional resistance with the outer wall of the blank.
In this embodiment, preferably, the opening at the upper end of the lower die 12 is relatively provided with a first discharging frame 135 and a second discharging frame 136, the first discharging frame 135 and the second discharging frame 136 are arranged along the radial direction of the rotary cavity, and a limiting tooth 137 for limiting the upper end of the blank is arranged on the first discharging frame 135 and the second discharging frame 136. When the upper male die 11 is pulled out upwards for discharging, the limiting teeth 137 on the first discharging frame 135 and the second discharging frame 136 can hold the outer circle of the upper male die 11 and simultaneously block the upper end surface of the blank, so that the blank is effectively prevented from being brought out upwards.
In this embodiment, it is preferable that a radial moving mechanism for driving the first mold frame 131, the second mold frame 132, the first discharging frame 135, and the second discharging frame 136 to move is further included, and the radial moving mechanism includes: a door-shaped guide frame 138 arranged along the radial direction of the rotary cavity and an expansion rod 139. The door-shaped guide frame 138 is horizontally disposed in a sliding sleeve on the frame 100, and the telescopic rod 139 may be a hydraulic cylinder or an air cylinder, and one end of the telescopic rod is fixed on the frame 100, and the other end of the telescopic rod is connected to the door-shaped guide frame 138.
In this embodiment, preferably, the lower concave die 12 includes: the die holder 121 of the rotary body shape and at least two arc templates 122, the arc templates 122 are assembled and enclosed into a ring shape, and then the lower ends of the arc templates are detachably mounted on the die holder 121 and can be fastened and mounted through bolts. When the blank is taken out of the lower cavity die 12, the arc-shaped die plate 122 can be detached from the die holder 121, and then the formed blank can be taken out more easily.
In this embodiment, preferably, the clutch mechanism 27 includes: a positioning hole 271 disposed on one end of the shaft 23 and the rotary head 25, and a positioning pin 272 disposed on the other end of the shaft 23 and the rotary head 25, wherein when the positioning pin 272 is inserted into the positioning hole 271, the rotary head 25 drives the shaft 23 to rotate. Further, the positioning pin 272 is movably disposed in an installation hole 273 at an end of the rotary head 25 in the axial direction, and a spring 274 for elastically ejecting the positioning pin 272 is further disposed in the installation hole 273. When the mounting base 22 is attracted and moved downward, if the positioning hole 271 is not aligned with the positioning pin 272, the positioning pin 272 can move in the mounting hole 273 to avoid damage due to rigid collision, and when the rotating head 25 rotates, the positioning pin 272 can be aligned with the positioning hole 271 and locked to drive the positioning pin 271 to rotate together.
In this embodiment, preferably, the positioning structure 28 includes: an inverted cone head 281 coaxially arranged with the rotation shaft 23 at the lower end of the mounting seat 22, and an inverted cone hole 282 arranged at the upper end of the worktable 24, wherein the inverted cone head 281 is positioned when inserted into the inverted cone hole 282. Ensuring concentricity.
In this embodiment, preferably, the suction fastening component 29 is an electromagnetic chuck, and the lower end surface of the mounting base 22 is provided with a suction portion for sucking with the electromagnetic chuck.
In this embodiment, preferably, the method further includes: guide rail 200, transmission screw assembly 201 that the equality set up, moving platform 21 removes to erect on guide rail 200, and moving platform 21 bottom is equipped with the gyro wheel promptly, moving platform 21 realizes lateral shifting through transmission screw assembly 201. The lower concave die is convenient to move to a position convenient for discharging.
The forming method of the carbon-carbon crucible blank near-net forming equipment comprises the following steps:
s1, loading a blank: placing a carbon-carbon crucible blank at an opening at the upper end of the lower female die 12;
s2, mold closing: firstly, moving an upper male die 11 downwards to be in initial contact with and tightly pushed against the upper end of a carbon-carbon crucible blank, and stopping; secondly, the first mold frame 131 and the second mold frame 132 move close to the axis direction, and the outer circumferential surface of the carbon-carbon crucible blank is clamped through the mold frame arc surface 133;
s3, pressing near net shape: the upper male die 11 continuously moves downwards, and the carbon-carbon crucible blank is pressed into the lower female die 12;
s4, demolding: the upper male die 11 is moved back to the initial position, and then the carbon-carbon crucible blank is taken out from the lower female die 12.
The inner surface and the outer surface of the blank are subjected to bidirectional extrusion to form a compact surface, so that the strength and the hardness of a subsequently prepared product are ensured, and the material waste is reduced.
In this embodiment, preferably, in S3: when the upper punch 11 moves downwards to press the carbon-carbon crucible blank into the lower die 12, the upper punch 11 and the lower die 12 rotate around the axis, and the rotating directions are opposite. When the upper male die 11 and the lower female die 12 rotate around different directions, the braided fibers in the blank are twisted and interwoven, and the axial deformation degree of the blank when being extruded is reduced.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.
Claims (10)
1. A carbon-carbon crucible blank near-net-shape forming apparatus, comprising: a forming die (1) and a positioning and rotating device (2);
the forming die (1) comprises: the device comprises an upper male die (11), a lower female die (12) and a die frame (13), wherein when the upper male die (11) is inserted into the lower male die (12) from an opening at the upper end, the periphery of the upper male die is matched with the inner wall of the lower female die (12) to form a rotary cavity; the die carrier (13) comprises a first die carrier (131) and a second die carrier (132) which are relatively positioned above an opening at the upper end of the lower female die (12) and are arranged along the radial direction of the rotary cavity, and die carrier cambered surfaces (133) matched with the periphery of the rotary cavity are arranged on one sides of the first die carrier (131) and the second die carrier (132) close to the axis of the rotary cavity;
the positioning and rotating device (2) comprises: the device comprises a moving platform (21), a mounting seat (22), a rotating shaft (23), a workbench (24) and a rotating head (25), wherein the mounting seat (22) is erected on the moving platform (21) through an elastic jacking assembly (26), the rotating shaft (23) is arranged on the mounting seat in a rotating mode around a vertical shaft, the upper end of the rotating shaft (23) is coaxially provided with a lower concave die (12), and the lower end of the rotating shaft (23) is in transmission connection with the rotating head (25) arranged on the workbench (24) through a clutch mechanism (27); a positioning structure (28) and a suction fastening component (29) are also arranged between the lower end of the mounting seat (22) and the upper end of the workbench (24).
2. The carbon-carbon crucible blank near-net-shape forming device as claimed in claim 1, further comprising a frame (100), wherein a mounting frame (102) is arranged above the frame through a lifting assembly (101), and the upper male die (11) is rotatably mounted on the mounting frame (102) around a vertical axis.
3. The carbon-carbon crucible blank near-net forming device as claimed in claim 1, wherein the opening at the upper end of the lower female die (12) is provided with a first discharging frame (135) and a second discharging frame (136) which are opposite to each other, the first discharging frame (135) and the second discharging frame (136) are arranged along the radial direction of the rotary die cavity in a movable manner, and a limiting tooth (137) for limiting the upper end of the blank is arranged on the first discharging frame and the second discharging frame.
4. The carbon-carbon crucible blank near-net-shape forming apparatus of claim 3, further comprising a radial moving mechanism for driving the first mold frame (131), the second mold frame (132), the first discharging frame (135), and the second discharging frame (136) to move, and comprising: a door-shaped guide frame (138) which is arranged along the radial direction of the rotary cavity, and an expansion link (139).
5. The carbon-carbon crucible blank near-net-shape forming apparatus as claimed in claim 1, wherein the lower female die (12) comprises: the die comprises a rotary die holder (121) and at least two arc-shaped templates (122), wherein the arc-shaped templates (122) are assembled to form a ring, and the lower end of the ring-shaped template is detachably mounted on the die holder (121).
6. The carbon-carbon crucible blank near-net-shape forming apparatus as claimed in claim 1, wherein the clutch mechanism (27) comprises: a positioning hole 271 disposed on one end of the shaft 23 and the rotating head 25, and a positioning pin 272 disposed on the other end of the shaft 25, wherein when the positioning pin 272 is inserted into the positioning hole 271, the rotating head 25 drives the shaft 23 to rotate.
7. The carbon-carbon crucible blank near-net-shape forming apparatus as recited in claim 1, wherein the positioning structure (28) comprises: the positioning device comprises an inverted cone head (281) coaxially arranged at the lower end of the mounting seat (22) with the rotating shaft (23), and an inverted cone hole (282) arranged at the upper end of the workbench (24), wherein the inverted cone head (281) is positioned when inserted into the inverted cone hole (282).
8. The carbon-carbon crucible blank near-net forming device as claimed in claim 1, wherein the suction fastening component (29) is an electromagnetic chuck, and a suction portion for sucking with the electromagnetic chuck is arranged on the lower end surface of the mounting seat (22).
9. The forming method of the carbon-carbon crucible blank near-net forming equipment as claimed in any one of claims 1 to 8, characterized by comprising the following steps:
s1, loading a blank: placing a carbon-carbon crucible blank at an opening at the upper end of a lower concave die (12);
s2, mold closing: firstly, moving an upper male die (11) downwards to be in initial contact with and tightly abut against the upper end of a carbon crucible blank, and stopping; secondly, the first mold frame (131) and the second mold frame (132) move close to the axis direction, and the outer circumferential surface of the carbon-carbon crucible blank is clamped through the mold frame cambered surfaces (133);
s3, pressing near net shape: the upper male die (11) continuously moves downwards, and the carbon-carbon crucible blank is pressed into the lower female die (12);
s4, demolding: the upper male die (11) moves back to the initial position, and then the carbon-carbon crucible blank is taken out from the lower female die (12).
10. The forming method according to claim 9, wherein in the S3: when the upper male die (11) moves downwards to press the carbon-carbon crucible blank into the lower female die (12), the upper male die (11) and the lower female die (12) rotate around the axis, and the rotating directions are opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011353405.5A CN112549361B (en) | 2020-11-26 | 2020-11-26 | Carbon-carbon crucible blank near-net forming equipment and forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011353405.5A CN112549361B (en) | 2020-11-26 | 2020-11-26 | Carbon-carbon crucible blank near-net forming equipment and forming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112549361A true CN112549361A (en) | 2021-03-26 |
| CN112549361B CN112549361B (en) | 2021-07-30 |
Family
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| CN202011353405.5A Active CN112549361B (en) | 2020-11-26 | 2020-11-26 | Carbon-carbon crucible blank near-net forming equipment and forming method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114379115A (en) * | 2021-12-31 | 2022-04-22 | 浙江德鸿碳纤维复合材料有限公司 | Carbon crucible support and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB231470A (en) * | 1924-03-25 | 1926-06-16 | Charlotte Thompson Porter | Improvements in & relating to apparatus for moulding crucibles and the like |
| CN106239705A (en) * | 2016-08-25 | 2016-12-21 | 德清三明坩埚有限公司 | A kind of experiment crucible forming machine |
| CN107853977A (en) * | 2017-02-21 | 2018-03-30 | 浙江古石科技有限公司 | A kind of spinning covers the pan that bottom metal stone matter inner bag pot manufacture craft and its system are matched somebody with somebody |
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2020
- 2020-11-26 CN CN202011353405.5A patent/CN112549361B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB231470A (en) * | 1924-03-25 | 1926-06-16 | Charlotte Thompson Porter | Improvements in & relating to apparatus for moulding crucibles and the like |
| CN106239705A (en) * | 2016-08-25 | 2016-12-21 | 德清三明坩埚有限公司 | A kind of experiment crucible forming machine |
| CN107853977A (en) * | 2017-02-21 | 2018-03-30 | 浙江古石科技有限公司 | A kind of spinning covers the pan that bottom metal stone matter inner bag pot manufacture craft and its system are matched somebody with somebody |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114379115A (en) * | 2021-12-31 | 2022-04-22 | 浙江德鸿碳纤维复合材料有限公司 | Carbon crucible support and preparation method thereof |
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| CN112549361B (en) | 2021-07-30 |
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