CN113843942A - Carbon fiber material extrusion forming die and forming method - Google Patents
Carbon fiber material extrusion forming die and forming method Download PDFInfo
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- CN113843942A CN113843942A CN202111299407.5A CN202111299407A CN113843942A CN 113843942 A CN113843942 A CN 113843942A CN 202111299407 A CN202111299407 A CN 202111299407A CN 113843942 A CN113843942 A CN 113843942A
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- carbon fiber
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- 238000001125 extrusion Methods 0.000 title claims abstract description 66
- 239000000463 material Substances 0.000 title claims abstract description 61
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 46
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 46
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 69
- 238000003825 pressing Methods 0.000 claims description 25
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 19
- 229910052799 carbon Inorganic materials 0.000 claims description 19
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 abstract description 9
- 238000005070 sampling Methods 0.000 abstract description 5
- 238000000926 separation method Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000003754 machining Methods 0.000 abstract description 2
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Images
Classifications
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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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/006—Pressing and sintering powders, granules or fibres
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/34—Feeding the material to the mould or the compression means
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/52—Heating or cooling
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
-
- 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
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
- B29C2043/5808—Measuring, controlling or regulating pressure or compressing force
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
- B29C2043/5816—Measuring, controlling or regulating temperature
Abstract
The invention discloses a carbon fiber material extrusion forming die which comprises an upper die assembly and a lower die assembly, wherein the lower die assembly adopts a split structure of a first lower die half body and a second lower die half body, so that the die separation and the part taking can be realized, and the part sampling is simple and easy to operate; meanwhile, heating elements with adjustable heating temperature are embedded in the wall surfaces of the first lower die half body and the second lower die half body, so that the temperature in the blank extrusion forming process can be adjusted and controlled, the problems that parts are difficult to take out, the parts are not uniformly heated, the part machining precision is poor and the like in the existing carbon fiber material extrusion forming process are effectively solved, and reliable equipment is provided for carbon fiber composite material forming. The carbon fiber material extrusion forming method provided by the invention is carried out by adopting the carbon fiber material extrusion forming die, and the method integrates the steps of die parting sampling, heating temperature regulation, forming pressure regulation and the like, so that the processing precision of parts is improved, and a reliable production process is provided for forming the carbon fiber composite material.
Description
Technical Field
The invention belongs to the technical field of material forming, relates to extrusion forming of carbon fiber materials, and particularly relates to an extrusion forming die and a forming method of the carbon fiber materials.
Background
The existing carbon fiber material forming die is complex in structure, and as for an original blank 1 shown in figure 1, the structure is special, one end of the original blank is a spherical surface, and the other end of the original blank is a cylindrical surface, so that the taking and placing of a piece in the forming die are difficult. In addition, the original blank 1 pair is made of carbon fiber composite material, the heating temperature and the forming pressure of the existing forming die are not adjustable in the forming process, so that the part formed by extrusion is easily heated unevenly, and the processing precision of the part is poor.
Disclosure of Invention
The invention aims to provide a carbon fiber material extrusion forming die and a forming method, which are used for solving the problems of complex structure and nonadjustable heating temperature of the die in the forming process in the prior art.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a carbon fiber material extrusion forming die, which comprises:
the lower die assembly comprises a lower die bottom plate, a first lower die half body and a second lower die half body, one of the first lower die half body and the second lower die half body is fixed on the lower die bottom plate, the other one of the first lower die half body and the second lower die half body is movably arranged on the lower die bottom plate through a sliding assembly, and the sliding assembly can drive the first lower die half body and the second lower die half body to close and separate; the first lower die half body and the second lower die half body are matched to form a cavity matched with the outline of the outer wall of the original blank to be extruded; heating elements with adjustable heating temperature are embedded in the wall surfaces of the first lower die half body and the second lower die half body;
the upper die assembly comprises an upper die bottom plate, an upper die extrusion punch and a material pressing device, wherein one end of the upper die extrusion punch is fixed on the upper die bottom plate, and the other end of the upper die extrusion punch is provided with the material pressing device; the outer wall of the material pressing device is matched with the contour of the inner wall of the original blank to be extruded, so that the original blank to be extruded is tightly pressed between the outer wall of the material pressing device and the inner wall of the cavity.
Optionally, the swager is connected to the upper die base plate through a pressure assembly, and the pressure assembly is located inside the upper die extrusion punch; wherein the pressure assembly comprises:
one end of the stroke limiter guide rod is fixed on the upper die bottom plate;
the stroke limiter limiting plate is fixed at the other end of the stroke limiter guide rod;
the swaging device mounting plate is slidably mounted on the stroke limiter guide rod and is positioned between the stroke limiter limiting plate and the upper die bottom plate; one end of the swage mounting plate, which is far away from the upper die bottom plate, is provided with the swage;
the two ends of the spring are respectively connected to the portion, close to the swage mounting plate, of one end of the upper die base plate and the portion, close to the upper die base plate, of the swage mounting plate, and the swage can retract into the upper die extrusion punch when the spring contracts.
Optionally, the first lower die half body is fixed on the lower die bottom plate, and the second lower die half body is movably mounted on the lower die bottom plate through the sliding assembly; and the first lower die half body and the second lower die half body are matched to form a lower die body with a cylindrical outer wall surface.
Optionally, the heating element is a heating carbon rod coated with an insulating coating on the outer surface; the heating carbon rods are embedded in the wall surface of the first lower die half body at intervals along the circumferential direction of the wall surface, the heating carbon rods are embedded in the wall surface of the second lower die half body at intervals along the circumferential direction of the wall surface of the second lower die half body, and any one heating carbon rod is parallel to the axial direction of the lower die body.
Optionally, the glide assembly comprises:
the screw rod mounting seat is fixed on the lower die bottom plate; a placing groove is formed in the lead screw mounting seat;
the sliding block is fixed on the outer wall of the second lower die half body;
one end of the lower die moving screw rod is placed in the placing groove, and the other end of the lower die moving screw rod is in threaded connection with the sliding block;
the limiting nuts are arranged at least two, the limiting nuts are installed at one end, placed in the placing groove, of the lower die moving screw rod, and the limiting nuts are distributed on two sides of the placing groove to limit the lower die moving screw rod to move along the axial direction of the lower die moving screw rod.
Optionally, the locking device further comprises a locking assembly, wherein the locking assembly comprises:
the locking blocks are arranged on the outer walls of the first lower die half body and the second lower die half body, any one of the locking blocks is provided with a jack, and after the first lower die half body and the second lower die half body are closed, the jack of the locking block on the first lower die half body is aligned with the jack of the locking block on the second lower die half body to form a locking pore channel;
and the locking rod is used for being inserted into the locking pore channel after the first lower die half body and the second lower die half body are closed.
Optionally, the end of the locking rod is further provided with a hanging ring.
Meanwhile, the invention provides a carbon fiber material extrusion forming method, which is carried out by adopting the carbon fiber material extrusion forming die and comprises the following steps:
step 1: placing the original blank to be extruded into the cavity formed by the first lower die half body and the second lower die half body in a matched mode;
step 2: descending the upper die assembly to enable the material pressing device to enter the original blank to be extruded, enabling the outer bottom of the material pressing device to be in contact with the inner bottom of the original blank to be extruded, and enabling the upper die extrusion punch to be in contact with the top end face of the original blank to be extruded;
and step 3: starting the heating element to heat the original blank to be extruded, and stopping heating after heating for a period of time to naturally cool the original blank to be extruded; in the process of heating the original blank to be extruded and naturally cooling the original blank to be extruded, the upper die assembly continues to descend to extrude the original blank to be extruded;
and 4, step 4: after the original blank to be extruded is cooled to the room temperature, the upper die assembly stops pressurizing the original blank to be extruded;
and 5: and after the upper die assembly descends until the material pressing device is separated from the cavity, the first lower die half body and the second lower die half body are separated, and an extruded piece is taken out.
Optionally, in step 3, the heating the original blank to be extruded includes: and (3) keeping the temperature of the original blank to be extruded for 30 minutes when the original blank to be extruded is heated to 300 ℃, keeping the temperature of the original blank to be extruded for 30 minutes when the original blank to be extruded is continuously heated to 600 ℃, and then stopping heating by the heating element.
Optionally, the upper die assembly descends under the action of the press; and in the step 3, the press machine drives the upper die assembly to move downwards at the constant pressure of 8 Mpa.
Compared with the prior art, the invention has the following technical effects:
the carbon fiber material extrusion forming die provided by the invention is novel and reasonable in structure, the lower die assembly adopts a split structure of the first lower die half body and the second lower die half body, the die separation and the piece taking can be realized, and the part sampling is simple and easy to operate; meanwhile, heating elements with adjustable heating temperature are embedded in the wall surfaces of the first lower die half body and the second lower die half body, so that the temperature in the blank extrusion forming process can be adjusted and controlled, the problems that parts are difficult to take out, the parts are not uniformly heated, the part machining precision is poor and the like in the existing carbon fiber material extrusion forming process are effectively solved, and reliable equipment is provided for carbon fiber composite material forming.
In addition, the pressure assembly is arranged in the carbon fiber material extrusion forming die, the material pressing device can compress the spring in the pressure assembly and shrink into the upper die extrusion punch in the process of descending the upper die assembly integrally so as to ensure that the pressing position of the material pressing device on the blank is relatively unchanged, and the pressing effect of the upper die extrusion punch on the blank is matched, so that the die is not deformed in the blank extrusion forming process, the forming pressure is adjustable and controllable, and the part processing precision is favorably improved.
The carbon fiber material extrusion forming method provided by the invention is carried out by adopting the carbon fiber material extrusion forming die, and the method integrates the steps of die parting sampling, heating temperature regulation, forming pressure regulation and the like, so that the processing precision of parts is improved, and a reliable production process is provided for forming the carbon fiber composite material.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of a raw blank;
FIG. 2 is a top view of the raw blank of FIG. 1;
FIG. 3 is a side view of the raw blank of FIG. 1;
FIG. 4 is a schematic view of the overall structure of a lower mold assembly according to an embodiment of the present invention;
FIG. 5 is a schematic view of a first lower mold half of a lower mold assembly according to an embodiment of the present disclosure;
FIG. 6 is a schematic view of a second lower die half of the lower die assembly according to an embodiment of the present disclosure;
FIG. 7 is a schematic diagram of an overall structure of an upper mold assembly according to an embodiment of the present disclosure;
FIG. 8 is a bottom view of the upper die assembly disclosed in an embodiment of the present invention;
FIG. 9 is a schematic view of the installation of the presser in the upper die assembly according to the disclosure of the present invention;
FIG. 10 is a schematic view of an upper die extrusion punch of the upper die assembly according to an exemplary embodiment of the present disclosure;
FIG. 11 is a schematic view of the mounting plate of the presser in the upper die assembly according to the disclosure of the present invention;
FIG. 12 is an assembled schematic view of the upper and lower die assemblies disclosed in an embodiment of the present invention;
fig. 13 is a schematic view of the working process of the upper die assembly and the lower die assembly disclosed in the embodiment of the present invention.
Wherein the reference numerals are:
1. an original blank;
2. a lower die assembly; 21. a lower die base plate; 22. a first lower mold half; 23. a second lower mold half body; 24. a cavity; 25. a lead screw mounting seat; 251. a placement groove; 26. a slider; 27. the lower die moves the lead screw; 28. a limit nut;
3. a heating member;
4. an upper die assembly; 41. an upper die base plate; 42. an upper die extrudes a punch; 43. a material pressing device; 44. a travel limiter guide; 45. a travel limiter limiting plate; 46. a swage mounting plate; 47. a spring; 48. a guide rod limiting bottom plate;
5. fixing the bolt;
6. a locking assembly; 61. a locking block; 62. a jack; 63. a locking lever; 64. a lifting ring.
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.
The invention aims to provide a carbon fiber material extrusion forming die, which solves the problems of complex structure and nonadjustable heating temperature of the die in the forming process of the existing extrusion die.
The invention also aims to provide a carbon fiber material extrusion molding method which is carried out by adopting the carbon fiber material extrusion molding die.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
As shown in fig. 1 to 13, the present embodiment provides a carbon fiber material extrusion molding die, which mainly includes a lower die assembly 2 and an upper die assembly 4. The lower die assembly 2 comprises a lower die base plate 21, a first lower die half body 22 and a second lower die half body 23, one of the first lower die half body 22 and the second lower die half body 23 is fixed on the lower die base plate 21, the other one is movably arranged on the lower die base plate 21 through a sliding assembly, and the sliding assembly can drive the first lower die half body 22 and the second lower die half body 23 to be matched and separated; the first lower die half body 22 and the second lower die half body 23 are closed to form a cavity 24 matched with the outer wall profile of the original blank 1 to be extruded; heating elements 3 with adjustable heating temperature are embedded in the wall surfaces of the first lower die half body 22 and the second lower die half body 23. The upper die assembly 4 comprises an upper die base plate 41, an upper die extrusion punch 42 and a material pressing device 43, wherein one end of the upper die extrusion punch 42 is fixed on the upper die base plate 41, and the other end of the upper die extrusion punch 42 is provided with the material pressing device 43; the outer wall of the swager 43 matches the inner wall profile of the raw billet to be extruded 1 to compress the raw billet to be extruded between the outer wall of the swager 43 and the inner wall of the cavity 24. Preferably, in the present embodiment, the first lower mold half 22 is fixed to the lower mold bottom plate 21 by the fixing bolt 5 as a lower mold fixing separate body; correspondingly, the second lower half-die 23 is movably mounted on the lower bottom plate 21 through a sliding assembly and is used as a lower die moving split body.
In this embodiment, the swager 43 is connected to the upper die base plate 41 through a pressure assembly, and the pressure assembly is located inside the upper die extrusion punch 42; the pressure assembly comprises a stroke limiter guide rod 44, a stroke limiter limiting plate 45, a swage mounting plate 46 and a spring 47, wherein one end of the stroke limiter guide rod 44 is fixed on the upper die base plate 41, and the stroke limiter limiting plate 45 is fixed at the other end of the stroke limiter guide rod 44; the swage mounting plate 46 is slidably mounted on the stroke limiter guide rod 44 and is positioned between the stroke limiter limiting plate 45 and the upper die base plate 41; one end of the swage mounting plate 46, which is far away from the upper die bottom plate 41, is provided with a swage 43; both ends of the spring 47 are respectively connected to one end of the swage mounting plate 46 close to the upper die base plate 41 and the upper die base plate 41, and the swage 43 can be retracted into the upper die extrusion punch 42 when the spring 47 is retracted. Preferably, both ends of the spring 47 are fixed by spring positioning pins.
In this embodiment, the end of the stroke limiter guide rod 44 away from the stroke limiter limiting plate 45 is further provided with a guide rod limiting bottom plate 48, the upper die bottom plate 41 is provided with a through hole for the stroke limiter guide rod 44 to pass through, after one of the stroke limiter guide rod 44 used for installing the stroke limiter limiting plate 45 passes through the through hole, the stroke limiter limiting plate 45 is installed, and due to the arrangement of the guide rod limiting bottom plate 48, the stroke limiter guide rod 44 cannot be separated from the upper die bottom plate 41.
In this embodiment, the heating element 3 is preferably a carbon rod coated with an insulating coating on the outer surface, and a plurality of carbon rods are embedded in the wall surfaces of the first lower mold half 22 and the second lower mold half 23.
In the present embodiment, the first lower half 22 and the second lower half 23 are clamped to form a lower mold body having a cylindrical outer wall surface, and preferably, the first lower half 22 and the second lower half 23 are semi-cylindrical bodies having the same shape and size. On the basis of the structure, a plurality of heating carbon rods are embedded in the wall surface of the first lower die half body 22 at intervals along the circumferential direction, a plurality of heating carbon rods are embedded in the wall surface of the second lower die half body 23 at intervals along the circumferential direction, and any one heating carbon rod is arranged in parallel to the axial direction of the cylindrical lower die body. As a more preferable mode, a plurality of heating carbon rod mounting holes are formed in end surfaces of the first lower mold half body 22 and the second lower mold half body 23 away from the lower mold bottom plate 21, any one of the heating carbon rod mounting holes is arranged along the axial direction of the cylindrical lower mold body, and the heating carbon rods can be inserted into the heating carbon rod mounting holes, so that the disassembly and the assembly are convenient. The mode that above-mentioned heating carbon-point annular was arranged is adopted to this embodiment, is favorable to heating temperature even.
In this embodiment, the sliding assembly for driving the second lower mold half 23 to move includes a screw rod mounting seat 25, a sliding block 26, a lower mold moving screw rod 27 and a limit nut 28. The slider 26 is fixed to the outer wall of the second lower mold half 23; the screw rod mounting seat 25 is fixed to one end of the lower die base plate 21 away from the first lower die half body 22, a half-open type placing groove 251 is formed in the screw rod mounting seat, one end of the lower die moving screw rod 27 is placed in the placing groove 251, and the other end of the lower die moving screw rod is in threaded connection with the slider 26. The lower mold moving screw 27 is provided with at least two limiting nuts 28, the at least two limiting nuts 28 are mounted at one end of the lower mold moving screw 27, which is placed in the placing groove 251, and the at least two limiting nuts are distributed on two sides of the placing groove 251 to limit the lower mold moving screw 27 to move along the axial direction thereof. Preferably, two sets of sliding assemblies are provided, and are respectively located on two sides of the second lower mold half 23, as shown in fig. 4 to 6.
In this embodiment, a locking assembly 6 is further included, and the locking assembly 6 includes a locking block 61 and a locking lever 63. The locking block 61 is arranged on the outer walls of the first lower die half body 22 and the second lower die half body 23 and is positioned at the butt seam of the first lower die half body 22 and the second lower die half body 23; an insertion hole 62 is formed in any one of the locking blocks 61, when the first lower mold half 22 and the second lower mold half 23 are closed, the insertion hole 62 of the locking block 61 in the first lower mold half 22 and the insertion hole 62 of the locking block 61 in the second lower mold half 23 are aligned to form a locking hole, and the locking rod 63 is used for being inserted into the locking hole after the first lower mold half 22 and the second lower mold half 23 are closed to realize locking. Preferably, a set of locking assemblies 6 is respectively arranged on two sides of the first lower half die 22 and the second lower half die 23, any one set of locking assemblies 6 comprises a plurality of locking blocks 61, and the locking blocks 61 are staggered at the butt seam of the first lower half die 22 and the second lower half die 23, and form a snap-fit alignment when die assembly is carried out, as shown in fig. 4-6.
In this embodiment, the end of the locking rod 63 is further provided with a hanging ring 64, so that the locking rod 63 can be conveniently pulled out from the locking hole, and the mold can be opened to release the mold or be opened to take the mold.
The carbon fiber material extrusion forming method based on the carbon fiber material extrusion forming die mainly comprises the following steps:
1) and (4) forming the whole upper die assembly 4 after all the components of the upper die are installed.
2) And (4) mounting all the components of the lower die to form the whole lower die assembly 2.
3) The upper die base plate 41 of the upper die assembly 4 is fixed to the upper table of the press.
4) The lower die base plate 21 of the lower die assembly 2 is fixed to the lower table of the press.
5) The upper and lower tables of the press are adjusted to an open state.
6) A raw blank 1 based on a carbon fiber composite material having the shape shown in fig. 1 to 3 is placed in a lower mold assembly 2 (i.e., in a cavity 24 formed by the first lower mold half 22 and the second lower mold half 23 being clamped together).
7) And (3) driving an upper workbench of the press to move downwards, simultaneously driving the upper die assembly 4 to move integrally downwards, extending the material pressing device 43 into the original blank 1 until the bottom arc curved surface of the material pressing device 43 is contacted with the inner lower arc surface of the original blank 1, and stopping the movement of the upper workbench of the press. The lower end surface of the upper die extrusion punch 42 is just in contact with the upper end surface (circular flat end surface) of the original blank 1.
8) Adjusting a heating element 3 (namely a heating carbon rod with an insulating coating) to start heating, keeping the temperature for 30 minutes when the heating element is heated to 250-300 ℃, continuing heating, keeping the temperature for 30 minutes when the heating element is heated to 550-600 ℃, then adjusting and stopping heating to enable the blank to be naturally cooled in the cavity 24. In the whole series of processes of heating, heat preservation, continuous heating, heat preservation, heating stopping and natural cooling, the upper workbench of the press machine slowly descends, the pressure of 8Mpa is always kept until the blank is cooled to the room temperature (15 ℃ -30 ℃), and the pressurization is stopped. In the process that the upper workbench of the press always keeps 8Mpa pressure and slowly descends, the material pressing device 43 always keeps still, the spring 47 is compressed, and dynamic balance is kept; the upper mold extrusion punch 42 slowly descends along with the press machine, and compresses and compacts the carbon fiber material (i.e. the above-mentioned original blank 1) along the axial direction of the original blank 1. In the heating process, the heating element 3 (i.e. the carbon rod with the insulating coating) is preferably adjusted to start heating, the temperature is kept for 30 minutes when the temperature is increased to 300 ℃, the heating is continued, the temperature is kept for 30 minutes when the temperature is increased to 600 ℃, and then the adjustment is carried out to stop heating.
9) After the blank is cooled to room temperature, the upper workbench of the press moves upwards to drive the upper die assembly 4 to move upwards integrally (the first half stroke (not specifically referred to as a half stroke) of the upwards movement, the upper die extrusion punch 42 moves upwards slowly along with the press, and the position of the material pressing device 43 is not changed under the action of the spring 47; thereafter, i.e., the second half of the upward movement (not specifically referred to as a half stroke), as the upper die extrusion punch 42 continues to move upward, the compressed spring 47 gradually returns to its original position, and after the spring returns to its original position, the presser 43 moves upward synchronously with the upper table of the press until the upper die assembly 4 and the lower die assembly 2 are completely separated.
10) The first lower mold half 22 and the second lower mold half 23 are in an unlocked state by lifting the hanging ring 64 to pull the lock lever 63 out of the lock passage formed by the clamping of the first lower mold half 22 and the second lower mold half 23.
11) The lower die moving screw 27 is rotated by a wrench or manually to drive the second lower die half body 23 to move towards the direction far away from the first lower die half body 22, finally, the first lower die half body 22 and the second lower die half body 23 are separated, die separation is realized, and the carbon fiber product after extrusion forming is taken out.
The carbon fiber composite material forming die and the forming method (production process flow) provided by the technical scheme mainly have the following advantages:
1) the lower die is arranged in a split structure, the structure is novel and reasonable, the die separation sampling is realized, and the operation is simple and easy;
2) the heating (forming) temperature and the forming pressure are adjustable and controllable, and the die cannot be deformed due to heating in the forming process;
3) the heating elements of the carbon fiber composite material forming die are annularly arranged, and the heating temperature is uniform;
4) the extrusion die is suitable for extrusion molding of special materials such as carbon fiber composite materials, the die does not deform, and the precision of parts is high.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. A carbon fiber material extrusion molding die, characterized by comprising:
the lower die assembly comprises a lower die bottom plate, a first lower die half body and a second lower die half body, one of the first lower die half body and the second lower die half body is fixed on the lower die bottom plate, the other one of the first lower die half body and the second lower die half body is movably arranged on the lower die bottom plate through a sliding assembly, and the sliding assembly can drive the first lower die half body and the second lower die half body to close and separate; the first lower die half body and the second lower die half body are matched to form a cavity matched with the outline of the outer wall of the original blank to be extruded; heating elements with adjustable heating temperature are embedded in the wall surfaces of the first lower die half body and the second lower die half body;
the upper die assembly comprises an upper die bottom plate, an upper die extrusion punch and a material pressing device, wherein one end of the upper die extrusion punch is fixed on the upper die bottom plate, and the other end of the upper die extrusion punch is provided with the material pressing device; the outer wall of the material pressing device is matched with the contour of the inner wall of the original blank to be extruded, so that the original blank to be extruded is tightly pressed between the outer wall of the material pressing device and the inner wall of the cavity.
2. The carbon fiber material extrusion die of claim 1, wherein the swager is connected to the upper die base plate by a pressure assembly, and the pressure assembly is located inside the upper die extrusion punch; wherein the pressure assembly comprises:
one end of the stroke limiter guide rod is fixed on the upper die bottom plate;
the stroke limiter limiting plate is fixed at the other end of the stroke limiter guide rod;
the swaging device mounting plate is slidably mounted on the stroke limiter guide rod and is positioned between the stroke limiter limiting plate and the upper die bottom plate; one end of the swage mounting plate, which is far away from the upper die bottom plate, is provided with the swage;
the two ends of the spring are respectively connected to the portion, close to the swage mounting plate, of one end of the upper die base plate and the portion, close to the upper die base plate, of the swage mounting plate, and the swage can retract into the upper die extrusion punch when the spring contracts.
3. The carbon fiber material extrusion die of claim 1, wherein the first lower die half is fixed to the lower die base plate, and the second lower die half is movably mounted to the lower die base plate by the slide assembly; and the first lower die half body and the second lower die half body are matched to form a lower die body with a cylindrical outer wall surface.
4. The carbon fiber material extrusion molding die of claim 3, wherein the heating element is a heating carbon rod coated with an insulating coating on the outer surface; the heating carbon rods are embedded in the wall surface of the first lower die half body at intervals along the circumferential direction of the wall surface, the heating carbon rods are embedded in the wall surface of the second lower die half body at intervals along the circumferential direction of the wall surface of the second lower die half body, and any one heating carbon rod is parallel to the axial direction of the lower die body.
5. The carbon fiber material extrusion die of claim 3, wherein the glide assembly comprises:
the screw rod mounting seat is fixed on the lower die bottom plate; a placing groove is formed in the lead screw mounting seat;
the sliding block is fixed on the outer wall of the second lower die half body;
one end of the lower die moving screw rod is placed in the placing groove, and the other end of the lower die moving screw rod is in threaded connection with the sliding block;
the limiting nuts are arranged at least two, the limiting nuts are installed at one end, placed in the placing groove, of the lower die moving screw rod, and the limiting nuts are distributed on two sides of the placing groove to limit the lower die moving screw rod to move along the axial direction of the lower die moving screw rod.
6. The carbon fiber material extrusion die of any one of claims 1 to 5, further comprising a locking assembly, wherein the locking assembly comprises:
the locking blocks are arranged on the outer walls of the first lower die half body and the second lower die half body, any one of the locking blocks is provided with a jack, and after the first lower die half body and the second lower die half body are closed, the jack of the locking block on the first lower die half body is aligned with the jack of the locking block on the second lower die half body to form a locking pore channel;
and the locking rod is used for being inserted into the locking pore channel after the first lower die half body and the second lower die half body are closed.
7. The carbon fiber material extrusion die of claim 6, wherein the end of the locking bar is further configured with a lifting ring.
8. A carbon fiber material extrusion molding method using the carbon fiber material extrusion molding die according to any one of claims 1 to 7, characterized by comprising:
step 1: placing the original blank to be extruded into the cavity formed by the first lower die half body and the second lower die half body in a matched mode;
step 2: descending the upper die assembly to enable the material pressing device to enter the original blank to be extruded, enabling the outer bottom of the material pressing device to be in contact with the inner bottom of the original blank to be extruded, and enabling the upper die extrusion punch to be in contact with the top end face of the original blank to be extruded;
and step 3: starting the heating element to heat the original blank to be extruded, and stopping heating after heating for a period of time to naturally cool the original blank to be extruded; in the process of heating the original blank to be extruded and naturally cooling the original blank to be extruded, the upper die assembly continues to descend to extrude the original blank to be extruded;
and 4, step 4: after the original blank to be extruded is cooled to the room temperature, the upper die assembly stops pressurizing the original blank to be extruded;
and 5: and after the upper die assembly descends until the material pressing device is separated from the cavity, the first lower die half body and the second lower die half body are separated, and an extruded piece is taken out.
9. The extrusion method of carbon fiber material as claimed in claim 8, wherein said heating of said original blank to be extruded in step 3 comprises: and (3) keeping the temperature of the original blank to be extruded for 30 minutes when the original blank to be extruded is heated to 300 ℃, keeping the temperature of the original blank to be extruded for 30 minutes when the original blank to be extruded is continuously heated to 600 ℃, and then stopping heating by the heating element.
10. The extrusion molding method of carbon fiber material as claimed in claim 9, wherein the upper die assembly descends under the action of a press; and in the step 3, the press machine drives the upper die assembly to move downwards at the constant pressure of 8 Mpa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111299407.5A CN113843942A (en) | 2021-11-04 | 2021-11-04 | Carbon fiber material extrusion forming die and forming method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111299407.5A CN113843942A (en) | 2021-11-04 | 2021-11-04 | Carbon fiber material extrusion forming die and forming method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11221850A (en) * | 1998-02-06 | 1999-08-17 | Ikeda Bussan Co Ltd | Method for chucking rolled sheet in press molding and chucking device |
| CN101466516A (en) * | 2006-06-14 | 2009-06-24 | 萨克米伊莫拉机械合作社合作公司 | Apparatus for compression moulding objects |
| CN209478456U (en) * | 2018-11-05 | 2019-10-11 | 广东昊兴勘测设计有限公司 | The mold of quick Fabrication cement control point prefabricated component |
| CN210791742U (en) * | 2019-07-02 | 2020-06-19 | 荆州市荆洪塑料制品有限公司 | Plastic compression molding machine for plastic product production |
| CN212826425U (en) * | 2020-07-09 | 2021-03-30 | 长治市元昌制造科技有限公司 | Plastic compression mold for manufacturing insulating part |
| US20210121926A1 (en) * | 2019-10-25 | 2021-04-29 | North University Of China | Extrusion forming die for cabin component |
-
2021
- 2021-11-04 CN CN202111299407.5A patent/CN113843942A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11221850A (en) * | 1998-02-06 | 1999-08-17 | Ikeda Bussan Co Ltd | Method for chucking rolled sheet in press molding and chucking device |
| CN101466516A (en) * | 2006-06-14 | 2009-06-24 | 萨克米伊莫拉机械合作社合作公司 | Apparatus for compression moulding objects |
| CN209478456U (en) * | 2018-11-05 | 2019-10-11 | 广东昊兴勘测设计有限公司 | The mold of quick Fabrication cement control point prefabricated component |
| CN210791742U (en) * | 2019-07-02 | 2020-06-19 | 荆州市荆洪塑料制品有限公司 | Plastic compression molding machine for plastic product production |
| US20210121926A1 (en) * | 2019-10-25 | 2021-04-29 | North University Of China | Extrusion forming die for cabin component |
| CN212826425U (en) * | 2020-07-09 | 2021-03-30 | 长治市元昌制造科技有限公司 | Plastic compression mold for manufacturing insulating part |
Non-Patent Citations (1)
| Title |
|---|
| 刘守荣等: "《塑料成型工程学》", 机械工业出版社, pages: 276 - 277 * |
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