CN114589856A - Hot-pressing die and method - Google Patents
Hot-pressing die and method Download PDFInfo
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- CN114589856A CN114589856A CN202210055597.4A CN202210055597A CN114589856A CN 114589856 A CN114589856 A CN 114589856A CN 202210055597 A CN202210055597 A CN 202210055597A CN 114589856 A CN114589856 A CN 114589856A
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- 238000007731 hot pressing Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims description 10
- 229910052751 metal Inorganic materials 0.000 claims abstract description 44
- 239000002184 metal Substances 0.000 claims abstract description 44
- 239000004576 sand Substances 0.000 claims abstract description 35
- 239000003110 molding sand Substances 0.000 claims abstract description 25
- 238000007493 shaping process Methods 0.000 claims abstract description 16
- 239000004744 fabric Substances 0.000 claims abstract description 15
- 239000003365 glass fiber Substances 0.000 claims abstract description 15
- 238000002360 preparation method Methods 0.000 claims abstract description 8
- 238000005728 strengthening Methods 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 68
- 230000001681 protective effect Effects 0.000 claims description 34
- 238000007789 sealing Methods 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 238000010146 3D printing Methods 0.000 claims description 13
- 238000006073 displacement reaction Methods 0.000 claims description 12
- 238000009826 distribution Methods 0.000 claims description 12
- 238000003754 machining Methods 0.000 claims description 12
- 239000003292 glue Substances 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 239000012760 heat stabilizer Substances 0.000 claims description 8
- 210000005056 cell body Anatomy 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 239000011324 bead Substances 0.000 claims description 3
- 230000007306 turnover Effects 0.000 claims description 3
- 210000002421 cell wall Anatomy 0.000 claims description 2
- 238000009434 installation Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- -1 aliphatic amines Chemical class 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 150000001733 carboxylic acid esters Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000012990 dithiocarbamate Substances 0.000 description 1
- 150000004659 dithiocarbamates Chemical class 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004005 microsphere Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 150000003557 thiazoles Chemical class 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 239000003981 vehicle Substances 0.000 description 1
- 239000012991 xanthate Substances 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
- B29C43/32—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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3807—Resin-bonded materials, e.g. inorganic particles
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a hot-pressing die which comprises a molding sand die base body, a metal bearing body, glass fiber lining cloth, bearing upright posts and a positioning base, wherein the positioning base is of a frame structure with a rectangular cross section, the lower end face of the molding sand die base body is wrapped outside the metal bearing body, the lower end face of the metal bearing body is connected with the upper end face of the positioning base body through a plurality of bearing upright posts, and the glass fiber lining cloth is wrapped outside the lower end face of the molding sand die base body and inside the lining and the metal bearing body. The preparation method comprises four steps of equipment assembly, sand mold preparation, strengthening processing, shaping processing and the like. On one hand, the invention greatly improves the working efficiency and flexibility of the mold processing and forming operation and can meet the requirements of the mold processing operation of various different structural types; on the other hand, the flexibility of adjusting the structure and the working position of the die is greatly improved, the requirements of hot-press forming processing operation of different parts are effectively met, and the surface processing precision of products is improved.
Description
Technical Field
The invention relates to a hot-pressing die and a hot-pressing method, belonging to the field of thermoplastic processing equipment and technology.
Background
At present, in the production and preparation of blankets and soles for vehicles, various products need to be subjected to hot-press forming processing through a forming die, in order to meet the production requirement, the hot-press forming die used at present is usually prepared from materials such as aluminum alloy, magnesium alloy and iron alloy, and the like, and although the requirements of production and processing operations can be met, on one hand, the production and processing preparation efficiency of the die is low, the cost is high, the die can only meet the requirements of production of products with single structures, and the raw material recovery and regeneration utilization rate of the production die is low and the cost is high; on the other hand, the structure and the working position are relatively fixed, the flexible adjustment, installation and positioning cannot be realized according to the use requirement, the surface quality and the precision of the die are relatively poor, and the difficulty in repairing the surface quality defect is high, so that the service life of the die and the processing precision of a product are seriously influenced.
Therefore, in order to solve the problem, it is urgently needed to develop a hot-pressing mold and a preparation method thereof so as to meet the requirement of practical use.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a hot-pressing die and a hot-pressing method.
The utility model provides a hot pressing die, including the sand mold base member, the metal supporting body, the glass fiber lining cloth, bear the stand, the location base, wherein the location base is the frame construction that the cross section personally submits the rectangle, its up end and horizontal plane parallel distribution, the cladding of sand mold base member lower extreme face is outside the metal supporting body, and terminal surface parallel and level distribution under the metal supporting body and the sand mold base member, the terminal surface is connected with location base up end through a plurality of bearing stand under the metal supporting body, it is articulated through ratchet between terminal surface under bearing stand up end and the location base up end and the metal supporting body, and be 0-90 contained angle, and the terminal surface is 0-60 contained angle with location base up end under the sand mold base member, the cladding of glass fiber lining cloth is outside sand mold base member lower extreme and in lining and the metal supporting body.
Furthermore, the metal supporting body include bracket, direction spout, slider, pressure sensor, temperature sensor, the bracket is the cross section liner "U" font frame construction, the bracket inlays in the molding sand mould base member, bracket lower extreme face and molding sand mould base member lower extreme face parallel distribution, and the bracket lower extreme face is connected with the direction spout simultaneously, and direction spout and bracket lower extreme face parallel distribution, two are no less than to the direction spout, and every direction spout all with at least two slider sliding connection, the slider passes through pressure sensor and bears the upright post up end and be connected, at least two of temperature sensor is connected with bracket lower extreme face and encircles the distribution of bracket axis.
Furthermore, a plurality of diameters of the uniform distribution of the bottom of the bracket groove are not more than 1 millimeter, the height of the reinforcing ribs is at least 3 millimeters, the reinforcing ribs are vertically connected with the bottom of the bracket groove, the reinforcing ribs surround the axis of the bracket and are distributed in an annular array structure, and the distance between every two adjacent reinforcing ribs is 10-50 millimeters.
Furthermore, the bottom of the bracket is hinged with the guide sliding chutes through a ratchet mechanism, an included angle of 0-90 degrees is formed between every two adjacent guide sliding chutes, the guide sliding chutes are connected with the sliding blocks through at least one positioning pin, and the sliding blocks are hinged with the pressure sensor through the ratchet mechanism.
Further, bear the stand and be at least two-stage telescopic link structure, bear the weight of the groove that the transverse section personally submits "U" font is established to the location base up end that the stand corresponds, and when bearing the stand and being 0 with location base up end contained angle, bear the stand and inlay in bearing the weight of the inslot.
Furthermore, the positioning base is of a structure with a cross section of Jiong-shaped groove-shaped frame, a drainage fan is arranged in a groove body of the positioning base, at least four auxiliary bearing mechanisms are arranged at the bottom and the outer side face of the groove body, and the auxiliary bearing mechanisms are uniformly distributed around the axis of the positioning base.
Furthermore, the auxiliary bearing mechanism comprises a lifting driving mechanism, a connecting plate, a universal ratchet wheel and a bearing block, wherein the lifting driving mechanism is connected with the positioning base and vertically distributed with the lower end face of the positioning base, the lifting driving mechanism is connected with at least one connecting plate, the connecting plate is in sliding connection with the positioning base, and the front end face of the connecting plate is connected with the universal ratchet wheel and is hinged with one bearing block through a universal hinge.
A preparation method of a hot-pressing die comprises the following steps:
s1, assembling equipment, namely firstly, arranging a metal bearing body structure according to a machining operation mould structure, then connecting the metal bearing body with a positioning base through a bearing upright post, then laying at least one layer of glass fiber lining cloth outside the lower end surface of the metal bearing body, simultaneously laying at least one layer of glass fiber lining cloth in the metal bearing body, thereby completing the assembly of a mould base body, finally, installing the mould base body to a machining operation table through the positioning base and an auxiliary bearing mechanism arranged on the positioning base, and adjusting the working position of the metal bearing body for standby through the bearing upright post and the auxiliary bearing mechanism;
s2, preparing a sand mold, after the step S1 is completed, transferring the mold base body and the machining operation table to a 3D printing system integrally, and performing 3D printing forming machining on the sand mold by using molding sand by the 3D printing system on the basis of a metal carrier to prepare a blank sand mold;
s3, strengthening processing, namely transferring the blank sand mold prepared in the step S2, the mold base body and the processing operation platform to a shaping mechanism, firstly heating the whole blank sand mold to 100-180 ℃, then preserving the heat of the blank sand mold and keeping the time of the whole blank sand mold to 3.5-6 kg/cm2Keeping the temperature and the pressure for 10 to 30 minutes, and naturally cooling to 30 to 80 ℃;
and S4, shaping, namely uniformly spraying shaping glue solution with the thickness not less than 1 mm on the surface of the blank sand mold subjected to the pressurization treatment in the step S3, and naturally cooling to normal temperature after the spraying of the shaping glue solution is finished to obtain the finished product hot-pressing mold.
Further, the processing operation table comprises a base, a protective cover, a sealing cover, an irradiation heating mechanism, at least two guide air ports, a drainage fan, a temperature and humidity sensor, an air pressure sensor, a guide slide rail and a driving circuit, wherein the protective cover is coated outside the upper end face of the base and coaxially distributed with the base, the upper end face of the protective cover is hinged with the sealing cover through a turnover mechanism and forms an included angle of 0-180 degrees with the upper end face of the protective cover, when the included angle of the sealing cover and the upper end face of the protective cover is 0 degree, the sealing cover is coated outside the upper end face of the protective cover and forms a closed cavity structure with a rectangular axial section with the base and the protective cover, the guide air ports are embedded in the upper end face of the base and uniformly distributed around the axis of the base, the guide air ports are mutually connected in parallel and respectively communicated with the drainage fan through a guide pipe, the irradiation heating mechanism is at least two uniformly distributed around the axis of the base, each irradiation heating mechanism is connected with the side wall of the protective cover through a guide sliding rail in a sliding mode, the guide sliding rail is hinged to the protective cover through a rotary table mechanism, included angles of 0-60 degrees are formed between the guide sliding rail and the protective cover, the temperature and humidity sensors and the air pressure sensors are connected with the sealing cover and are uniformly distributed around the axis of the sealing cover, the irradiation heating mechanisms, the drainage fan, the temperature and humidity sensors and the air pressure sensors are electrically connected with a driving circuit, and the drainage fan and the driving circuit are connected with the outer surface of the base.
Further, the base include base, tray, lift actuating mechanism, elastic cushion, displacement sensor, the base is "H" font slot-like structure for the cross section, the terminal surface inlays in the base up end cell body under the protection casing to with cell wall sliding connection, drainage fan and drive circuit all inlay in the cell body of terminal surface under the base, the tray is for the platelike structure who is the rectangle with base coaxial distribution and cross section, and the terminal surface is connected through the tank bottom of lift actuating mechanism with base up end cell body under the tray, and the terminal surface establishes two at least elastic cushion around tray axis equipartition under the tray in addition, at least one displacement sensor is established in addition to the tray side surface, and displacement sensor axis and protection casing axis vertical distribution, just lift actuating mechanism and displacement sensor all with drive circuit electrical connection.
Furthermore, the molding sand is resin molding sand.
Further, the shaping glue solution in the step S4 is composed of the following components in parts by weight: 1-2.1% of ceramic fiber, 2.1-3.5% of hollow glass microsphere, 0.2-1.1% of heat stabilizer, 0.3-0.5% of curing agent, 0.1-0.4% of accelerator and the balance 191 resin.
Compared with the traditional hot-pressing mold, the invention greatly improves the working efficiency and flexibility of mold processing and forming operation, can effectively meet the requirements of mold processing operation of various different structural types, can effectively improve the comprehensive recovery efficiency of the hot-pressing mold, simplifies the production process and reduces the production and use cost of the hot-pressing mold; on the other hand, the flexibility of adjusting the structure and the working position of the die is greatly improved, the structural strength of the die is high, and the surface quality precision is high, so that the requirements of hot press forming and processing operations of different parts are effectively met, and the surface processing precision of products is improved.
Drawings
The invention is described in detail below with reference to the drawings and the detailed description;
FIG. 1 is a schematic diagram of a partial structure of the system of the present invention;
FIG. 2 is a schematic cross-sectional view of a portion of the present invention;
FIG. 3 is a schematic view of a processing platform;
FIG. 4 is a schematic flow chart of the method of the present invention.
Detailed Description
In order to facilitate the implementation of the technical means, creation features, achievement of the purpose and the efficacy of the invention, the invention is further described below with reference to specific embodiments.
As shown in fig. 1-3, a hot-pressing mold comprises a molding sand mold base body 1, a metal bearing body 2, a glass fiber lining cloth 3, a bearing upright post 4 and a positioning base 5, wherein the positioning base 5 is a frame structure with a rectangular cross section, the upper end surface of the positioning base is distributed in parallel with the horizontal plane, the lower end surface of the molding sand mold matrix 1 is coated outside the metal bearing body 2, the lower end face of the metal bearing body 2 is parallel and level with the lower end face of the molding sand mold base body 1, the lower end face of the metal bearing body 2 is connected with the upper end face of the positioning base 5 through a plurality of bearing upright columns 4, the upper end face of the bearing upright column 4 is hinged with the upper end face of the positioning base 5 and the lower end face of the metal bearing body 2 through a ratchet mechanism 6, and an included angle of 0-90 degrees is formed, the lower end face of the molding sand mold matrix 1 and the upper end face of the positioning base 5 form an included angle of 0-60 degrees, and the glass fiber lining cloth 3 is coated outside the lower end face of the molding sand mold matrix 1 and inside the lining and metal supporting body 2.
In this embodiment, the metal supporting body 2 includes a bracket 21, two guide sliding grooves 22, two sliding blocks 23, two pressure sensors 24, and two temperature sensors 25, the bracket 21 has a cross section of a frame structure like "u", the bracket 21 is embedded in the molding sand mold base 1, the lower end surfaces of the bracket 21 and the molding sand mold base 1 are distributed in parallel, the lower end surfaces of the bracket 21 and the guide sliding grooves 22 are connected, the guide sliding grooves 22 and the lower end surfaces of the bracket 21 are distributed in parallel, the number of the guide sliding grooves 22 is not less than two, each guide sliding groove 22 is slidably connected with at least two sliding blocks 23, the sliding blocks 22 are connected with the upper end surfaces of the supporting columns 4 through the pressure sensors 24, and the number of the temperature sensors 25 is at least two, and the two temperature sensors are connected with the lower end surfaces of the bracket 21 and distributed around the axis of the bracket 21.
The reinforcing ribs 26 with the diameter not more than 1 mm and the height of at least 3 mm are uniformly distributed at the bottom of the groove of the bracket 21, the reinforcing ribs 26 are vertically connected with the bottom of the groove of the bracket 21 and distributed in an annular array structure around the axis of the bracket 21, and the distance between every two adjacent reinforcing ribs 26 is 10-50 mm.
Meanwhile, the bottom of the bracket 21 is hinged with the guide sliding chutes 22 through the ratchet mechanism 6, an included angle of 0-90 degrees is formed between every two adjacent guide sliding chutes 22, the guide sliding chutes 22 are connected with the sliding blocks 23 through at least one positioning pin 27, and the sliding blocks 23 are hinged with the pressure sensor 24 through the ratchet mechanism 6.
It should be noted that the supporting column 4 is an at least two-stage telescopic rod structure, the upper end surface of the positioning base 5 corresponding to the supporting column 4 is provided with a supporting groove 7 with a cross section shaped like a U, and when the included angle between the supporting column 4 and the upper end surface of the positioning base 5 is 0 degree, the supporting column 4 is embedded in the supporting groove 7.
Further preferably, the positioning base 5 is of a structure with a cross section in the shape of a groove in the shape of Jiong, a drainage fan 8 is arranged in a groove body of the positioning base 5, at least four auxiliary bearing mechanisms 9 are arranged at the bottom and the outer side surface of the positioning base, and the auxiliary bearing mechanisms 9 are uniformly distributed around the axis of the positioning base 5.
Further optimization, a plurality of heat dissipation air ports 10 are arranged at the positions of the positioning base corresponding to the drainage fans 8.
The auxiliary bearing mechanism 9 includes a lifting driving mechanism 91, a connecting plate 92, a universal ratchet 93, and a bearing block 94, the lifting driving mechanism 91 is connected with the positioning base 5 and vertically distributed with the lower end face of the positioning base 5, the lifting driving mechanism 91 is connected with at least one connecting plate 92, the connecting plate 91 is slidably connected with the positioning base 5, and the front end face of the connecting plate 92 is connected with the universal ratchet 95 and hinged to one bearing block 94 through a universal hinge 95.
During the in-service use, the location base carries out the installation location through supplementary bearing mechanism to the height of installation location is adjusted to the lift actuating mechanism of accessible supplementary bearing mechanism, through the angle of universal ratchet adjustment installation location, thereby satisfies the needs of different processing technology operations.
As shown in fig. 4, a method for manufacturing a hot press mold includes the following steps:
s1, assembling equipment, namely firstly, arranging a metal bearing body structure according to a machining operation mould structure, then connecting the metal bearing body with a positioning base through a bearing upright post, then laying at least one layer of glass fiber lining cloth outside the lower end surface of the metal bearing body, simultaneously laying at least one layer of glass fiber lining cloth in the metal bearing body, thereby completing the assembly of a mould base body, finally, installing the mould base body to a machining operation table through the positioning base and an auxiliary bearing mechanism arranged on the positioning base, and adjusting the working position of the metal bearing body for standby through the bearing upright post and the auxiliary bearing mechanism;
s2, preparing a sand mold, after the step S1 is completed, transferring the mold base body and the machining operation table to a 3D printing system integrally, and performing 3D printing forming machining on the sand mold by using molding sand by the 3D printing system on the basis of a metal carrier to prepare a blank sand mold;
s3, strengthening processing, namely transferring the blank sand mold prepared in the step S2, the mold base body and the processing operation platform to a shaping mechanism, firstly heating the whole blank sand mold to 100-180 ℃, then preserving the heat of the blank sand mold and keeping the time of the whole blank sand mold to 3.5-6 kg/cm2Keeping the temperature and the pressure for 10 to 30 minutes, and naturally cooling to 30 to 80 ℃;
and S4, shaping, namely uniformly spraying shaping glue solution with the thickness not less than 1 mm on the surface of the blank sand mold subjected to the pressurization treatment in the step S3, and naturally cooling to normal temperature after the spraying of the shaping glue solution is finished to obtain the finished product hot-pressing mold.
Further optimally, when the mold prepared in the step S4 is in actual use, when the surface has quality defects, the step S3 and the step S4 are returned, and the glue solution spraying and repairing are carried out on the surface of the mold; when the mould needs structural adjustment, accessible crushing equipment carries out breakage and granulation regeneration to the molding sand mould base member of mould, retrieves and restores the adjustment to metal supporting body, glass fiber lining cloth, bearing stand, location base simultaneously, can return to the compound brand-new mould that needs of using of S1 step production preparation to very big improvement mould recycle ratio, reduction mould use cost.
In particular, the processing operation table includes a base 101, a protective cover 102, a sealing cover 103, an irradiation heating mechanism 104, a flow guiding air opening 105, a flow guiding fan 106, a temperature and humidity sensor 107, an air pressure sensor 24, a guiding slide rail 108 and a driving circuit 109, the protective cover 102 covers the upper end surface of the base 101 and is coaxially distributed with the base 101, the upper end surface of the protective cover 102 is hinged to the sealing cover 103 through a turnover mechanism 1010 and forms an included angle of 0-180 degrees with the upper end surface of the protective cover 102, when the included angle of 0 degree is formed between the sealing cover 103 and the upper end surface of the protective cover 102, the sealing cover 103 covers the upper end surface of the protective cover 102 and forms a sealed cavity structure with a rectangular axial cross section with the base 101 and the protective cover 102, at least two flow guiding air openings 105 are embedded in the upper end surface of the base 101 and uniformly distributed around the axis of the base 101, the flow guiding air openings 105 are mutually connected in parallel and are respectively communicated with the flow guiding fan 106 through a flow guiding pipe, the irradiation heating mechanisms 104 are at least two and are uniformly distributed around the axis of the base 101, each irradiation heating mechanism 104 is respectively connected with the side wall of the protective cover 102 in a sliding mode through the guide slide rail 108, the guide slide rail 108 is hinged to the protective cover 102 through the rotary table mechanism 1011, and an included angle of 0-60 degrees is formed between the guide slide rail and the axis of the protective cover 102, the temperature and humidity sensor 107 and the air pressure sensor 24 are both connected with the sealing cover 103 and are uniformly distributed around the axis of the sealing cover 103, the irradiation heating mechanisms 104, the drainage fan 106, the temperature and humidity sensor 107 and the air pressure sensor 24 are electrically connected with the driving circuit 109, and the drainage fan 106 and the driving circuit 109 are connected with the outer surface of the base 101.
Wherein the base 101 comprises a base 111, a tray 121, a lifting driving mechanism 91, an elastic cushion block 131 and a displacement sensor 141, the base 111 is in an H-shaped groove-shaped structure, the lower end surface of the protective cover 102 is embedded in the groove body on the upper end surface of the base 111, and is connected with the groove wall in a sliding way, the drainage fan 106 and the drive circuit 109 are all embedded in the groove body on the lower end surface of the base 111, the tray 121 is a plate-shaped structure which is coaxially distributed with the base 111 and has a rectangular cross section, and the lower end surface of the tray 121 is connected with the groove bottom of the groove body on the upper end surface of the base 111 through the lifting driving mechanism 91, at least two elastic cushion blocks 131 uniformly distributed around the axis of the tray 121 are additionally arranged on the lower end surface of the tray 121, at least one displacement sensor 141 is additionally arranged on the side surface of the tray 121, and the axis of the displacement sensor 141 is perpendicular to the axis of the protective cover 102, and the lifting driving mechanism 91 and the displacement sensor 141 are both electrically connected with the driving circuit 109.
When 3D printing operation is carried out, firstly, a mould base body is loaded and positioned by the guide slide rail and the tray of the base, then 3D printing operation is carried out, the temperature of molding sand is adjusted by the irradiation heating mechanism when the 3D printing operation is carried out, and meanwhile, the height of the tray and the mould base body connected with the tray is adjusted by the lifting driving mechanism, so that the processing efficiency of the 3D printing operation is improved in an auxiliary manner, and the purpose of integrally improving the forming efficiency and the quality is achieved;
after the die response is completed, the protective cover is sealed by the sealing cover to form a closed cavity, then the irradiation heating mechanism multi-die blank is used for adjusting the temperature, meanwhile, the protective cover is pressurized by the flow guide air opening and the flow guide fan, and the die blank is uniformly pressurized and strengthened by air pressure.
Preferably, the molding sand is resin molding sand.
Meanwhile, the shaping glue solution in the step S4 is composed of the following components in parts by weight: 1-2.1% of ceramic fiber, 2.1-3.5% of hollow glass bead, 0.2-1.1% of heat stabilizer, 0.3-0.5% of curing agent, 0.1-0.4% of accelerator and the balance of 191 resin.
Wherein, the length of the ceramic fiber is 10-100 mm, and the diameter is 2.6-3.1 um; the particle size of the hollow glass bead is randomly selected from 30-50 microns, and the density is 0.1-0.3 g/ml.
Meanwhile, the heat stabilizer is: any one of an organic tin heat stabilizer, a carboxylic acid ester antimony heat stabilizer, a fatty acid heat stabilizer and an organic compound heat stabilizer;
the curing agent is: any one of aliphatic amines, aromatic amines, and amidoamines.
The accelerant is: aldehyde amines, thiazoles, dithiocarbamates, xanthates.
Compared with the traditional hot-pressing mold, the invention greatly improves the working efficiency and flexibility of mold processing and forming operation, can effectively meet the requirements of mold processing operation of various different structural types, can effectively improve the comprehensive recovery efficiency of the hot-pressing mold, and reduces the production and use cost of the hot-pressing mold; on the other hand, the flexibility of adjusting the structure and the working position of the die is greatly improved, the structural strength of the die is high, and the surface quality precision is high, so that the requirements of hot-press forming processing operation of different parts are effectively met, and the surface processing precision of products is improved.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A hot-pressing die is characterized in that: the hot pressing die comprises a sand die base body, a metal bearing body, glass fiber lining cloth, bearing stand columns and a positioning base, wherein the positioning base is of a frame structure with a cross section presenting a rectangle, the upper end face of the frame structure is distributed in parallel with a horizontal plane, the lower end face of the sand die base body is coated outside the metal bearing body, the lower end face of the metal bearing body is distributed in parallel with the lower end face of the sand die base body, the lower end face of the metal bearing body is connected with the upper end face of the positioning base body through a plurality of bearing stand columns, the upper end face of each bearing stand column is hinged with the upper end face of the positioning base body and the lower end face of the metal bearing body through a ratchet mechanism and forms an included angle of 0-90 degrees, the lower end face of the sand die base body and the upper end face of the positioning base body form an included angle of 0-60 degrees, and the glass fiber lining cloth is coated outside the lower end face of the sand die base body and inside the metal bearing body.
2. A hot-pressing mould as claimed in claim 1, characterized in that: the metal supporting body include bracket, direction spout, slider, pressure sensor, temperature sensor, the bracket is cross section liner "U" font frame construction, the bracket inlays in molding sand mould base member, terminal surface parallel distribution under terminal surface and the molding sand mould base member under the bracket, the terminal surface is connected with the direction spout under the bracket simultaneously, and terminal surface parallel distribution under direction spout and the bracket, two are no less than to the direction spout, and every direction spout all with two at least slider sliding connection, the slider passes through pressure sensor and bears the weight of the stand up end and be connected, temperature sensor is two at least, is connected and encircles the bracket axis distribution with terminal surface under the bracket.
3. A heated press mold as defined in claim 2 wherein: the bracket is characterized in that a plurality of reinforcing ribs with the diameters not larger than 1 millimeter and the heights not smaller than 3 millimeters are uniformly distributed at the bottom of the bracket, the reinforcing ribs are perpendicularly connected with the bottom of the bracket and distributed in an annular array structure around the axis of the bracket, the distance between every two adjacent reinforcing ribs is 10-50 millimeters, the bottom of the bracket is hinged to each guide chute through a ratchet mechanism, each two adjacent guide chutes form an included angle of 0-90 degrees, each guide chute is connected with each sliding block through at least one positioning pin, and each sliding block is hinged to each pressure sensor through the ratchet mechanism.
4. A hot-pressing mould as claimed in claim 1, characterized in that: bear the stand and be at least two-stage telescopic link structure, bear the stand and establish the cross-section and personally submit the bearing groove of "U" font on the location base up end that the stand corresponds, and when bearing stand and location base up end contained angle be 0, bear the stand and inlay in bearing groove, the location base personally submit "Jiong" font slot shaped frame construction for the cross-section, establish drainage fan in the location base cell body, four at least supplementary bearing mechanism are all established to its bottom and lateral surface, supplementary bearing mechanism encircles the equipartition of location base axis.
5. A heated press mould as claimed in claim 4, wherein: the auxiliary bearing mechanism comprises a lifting driving mechanism, connecting plates, universal ratchets and bearing blocks, the lifting driving mechanism is connected with the positioning base and vertically distributed with the lower end face of the positioning base, the lifting driving mechanism is connected with at least one connecting plate, the connecting plates are connected with the positioning base in a sliding mode, the front end face of each connecting plate is connected with the universal ratchets and hinged to one bearing block through a universal hinge.
6. The preparation method of the hot-pressing die is characterized by comprising the following steps of:
s1, assembling equipment, namely firstly, arranging a metal bearing body structure according to a machining operation mould structure, then connecting the metal bearing body with a positioning base through a bearing upright post, then laying at least one layer of glass fiber lining cloth outside the lower end surface of the metal bearing body, simultaneously laying at least one layer of glass fiber lining cloth in the metal bearing body, thereby completing the assembly of a mould base body, finally, installing the mould base body to a machining operation table through the positioning base and an auxiliary bearing mechanism arranged on the positioning base, and adjusting the working position of the metal bearing body for standby through the bearing upright post and the auxiliary bearing mechanism;
s2, preparing a sand mold, after the step S1 is completed, transferring the mold base body and the machining operation table to a 3D printing system integrally, and performing 3D printing forming machining on the sand mold by using molding sand by the 3D printing system on the basis of a metal carrier to prepare a blank sand mold;
s3, strengthening processing, namely transferring the blank sand mold prepared in the step S2, the mold base body and the processing operation platform to a shaping mechanism, firstly heating the whole blank sand mold to 100-180 ℃, then preserving the heat of the blank sand mold and keeping the time of the whole blank sand mold to 3.5-6 kg/cm2Keeping the temperature and the pressure for 10 to 30 minutes, and naturally cooling to 30 to 80 ℃;
and S4, shaping, namely uniformly spraying shaping glue solution with the thickness not less than 1 mm on the surface of the blank sand mold subjected to the pressurization treatment in the step S3, and naturally cooling to normal temperature after the spraying of the shaping glue solution is finished to obtain the finished product hot-pressing mold.
7. The method for manufacturing a hot-press mold according to claim 6, wherein: the processing operation table comprises a base, a protective cover, at least two sealing covers, an irradiation heating mechanism, a flow guide air opening, a flow guide fan, a temperature and humidity sensor, an air pressure sensor, a guide slide rail and a driving circuit, wherein the protective cover covers the upper end surface of the base and is coaxially distributed with the base, the upper end surface of the protective cover is hinged with the sealing cover through a turnover mechanism and forms an included angle of 0-180 degrees with the upper end surface of the protective cover, when the included angle of the sealing cover and the upper end surface of the protective cover is 0 degree, the sealing cover covers the upper end surface of the protective cover and forms a closed cavity structure with a rectangular axial section with the base and the protective cover, the flow guide air openings are embedded in the upper end surface of the base and are uniformly distributed around the axis of the base, the flow guide air openings are mutually connected in parallel and are respectively communicated with the flow guide fan through flow guide pipes, the irradiation heating mechanism is uniformly distributed around the axis of the base, each irradiation heating mechanism is connected with the side wall of the protective cover through a guide sliding rail in a sliding mode, the guide sliding rail is hinged to the protective cover through a rotary table mechanism, included angles of 0-60 degrees are formed between the guide sliding rail and the protective cover, the temperature and humidity sensors and the air pressure sensors are connected with the sealing cover and are uniformly distributed around the axis of the sealing cover, the irradiation heating mechanisms, the drainage fan, the temperature and humidity sensors and the air pressure sensors are electrically connected with a driving circuit, and the drainage fan and the driving circuit are connected with the outer surface of the base.
8. The method for manufacturing a hot-press mold according to claim 7, wherein: the base include base, tray, lift actuating mechanism, elastic cushion, displacement sensor, the base is "H" font slot-shaped structure for the cross section, the terminal surface inlays in the base up end cell body under the protection casing to with cell wall sliding connection, drainage fan and drive circuit all inlay in the cell body of terminal surface under the base, the tray is for the platelike structure who personally submits the rectangle with base coaxial distribution and cross section, and the terminal surface passes through lift actuating mechanism under the tray and is connected with the tank bottom of base up end cell body, and the tray establishes at least two elastic cushion around tray axis equipartition in addition under the terminal surface, at least one displacement sensor is established in addition to the tray side surface, and displacement sensor axis and protection casing axis vertical distribution, just lift actuating mechanism and displacement sensor all are connected with drive circuit electrical connection.
9. The method for manufacturing a hot-press mold according to claim 7, wherein: the molding sand is resin molding sand.
10. The method for manufacturing a hot-press mold according to claim 7, wherein: the shaping glue solution in the step S4 is composed of the following components in parts by weight: 1-2.1% of ceramic fiber, 2.1-3.5% of hollow glass bead, 0.2-1.1% of heat stabilizer, 0.3-0.5% of curing agent, 0.1-0.4% of accelerator and the balance of 191 resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210055597.4A CN114589856A (en) | 2022-01-18 | 2022-01-18 | Hot-pressing die and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210055597.4A CN114589856A (en) | 2022-01-18 | 2022-01-18 | Hot-pressing die and method |
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| CN114589856A true CN114589856A (en) | 2022-06-07 |
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| CN202210055597.4A Pending CN114589856A (en) | 2022-01-18 | 2022-01-18 | Hot-pressing die and method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203817978U (en) * | 2014-05-14 | 2014-09-10 | 白城中一精锻股份有限公司 | Polishing tool device for automobile engine connecting rod forging die |
| CN108421898A (en) * | 2018-04-24 | 2018-08-21 | 大连理工大学 | A kind of female conformal cooling pipe mold of band and its manufacturing method |
-
2022
- 2022-01-18 CN CN202210055597.4A patent/CN114589856A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203817978U (en) * | 2014-05-14 | 2014-09-10 | 白城中一精锻股份有限公司 | Polishing tool device for automobile engine connecting rod forging die |
| CN108421898A (en) * | 2018-04-24 | 2018-08-21 | 大连理工大学 | A kind of female conformal cooling pipe mold of band and its manufacturing method |
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