CN110450307B - Method for forming non-metal diaphragm of storage tank - Google Patents
Method for forming non-metal diaphragm of storage tank Download PDFInfo
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- CN110450307B CN110450307B CN201910868867.1A CN201910868867A CN110450307B CN 110450307 B CN110450307 B CN 110450307B CN 201910868867 A CN201910868867 A CN 201910868867A CN 110450307 B CN110450307 B CN 110450307B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B11/00—Making preforms
- B29B11/06—Making preforms by moulding the material
- B29B11/12—Compression moulding
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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
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/0053—Moulding articles characterised by the shape of the surface, e.g. ribs, high polish
- B29C37/0057—Moulding single grooves or ribs, e.g. tear lines
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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
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
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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
- B29C43/58—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
- 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
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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
- B29C43/58—Measuring, controlling or regulating
- B29C2043/5816—Measuring, controlling or regulating temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2623/00—Use of polyalkenes or derivatives thereof for preformed parts, e.g. for inserts
- B29K2623/16—EPM, i.e. ethylene-propylene copolymers; EPDM, i.e. ethylene-propylene-diene copolymers; EPT, i.e. ethylene-propylene terpolymers
Abstract
The invention relates to a method for forming a non-metal diaphragm of a storage tank. The molding method comprises the following steps: providing raw materials, wherein the raw materials comprise NX split pieces and an annular rib piece, N is the number of the second reinforcing ribs, X is an integer, and the annular rib piece and the first reinforcing rib are consistent in shape; splicing every X split pieces into a fan-shaped splicing piece, wherein the side edge of the fan-shaped splicing piece is provided with a lapping part; splicing each assembled fan-shaped splicing sheet on the surface of a female die of a press matched die according to a product structure of a non-metal diaphragm, overlapping parts of the radial side edges of two adjacent fan-shaped splicing sheets are overlapped to form a second reinforcing rib, and the overlapping parts of the inner sides of the fan-shaped splicing sheets are covered with annular rib sheets; starting a press to solidify and mold each fan-shaped splicing sheet and each annular rib sheet to form a molded non-metallic diaphragm; and opening the press, demolding the formed non-metal diaphragm, and processing into a non-metal diaphragm finished product. The invention improves the precision of the external dimension of the product, the appearance quality and the product percent of pass.
Description
Technical Field
The invention belongs to the technical field of material forming, and particularly relates to a forming method of a non-metal diaphragm of a storage tank.
Background
The storage tank is generally internally provided with a diaphragm to realize the discharge of fuel or combustion improver inside the storage tank. In the prior art, the types of the membranes comprise metal membranes and nonmetal membranes, and compared with the metal membranes, the nonmetal membranes have the advantages of good flexibility, good deformability, good sealing performance, good fatigue resistance and the like, but the general thickness of the nonmetal membranes is relatively thin, the forming difficulty is relatively high, the defects of air holes, uneven product thickness, even local perforation and the like are easy to occur, and the long-term storage of fuel or combustion improver is not facilitated.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a method for forming a non-metal diaphragm of a storage tank, which is beneficial to long-term storage of fuel or combustion improver.
The invention realizes the purpose through the following technical scheme:
a method for forming a non-metallic diaphragm of a storage tank comprises a body, wherein the body is hemispherical, a first reinforcing rib and a plurality of second reinforcing ribs are arranged on the inner surface of the body, the first reinforcing rib is annular, the first reinforcing rib is arranged in the middle of the inner surface of the body, one ends of the second reinforcing ribs are connected to the outer peripheral surface of the first reinforcing rib, the other ends of the second reinforcing ribs radially extend to the end surface of the body, and the body is equally divided into N fan-shaped areas by the second reinforcing ribs;
the molding method comprises the following steps:
providing a raw material, wherein the raw material comprises NX split pieces and an annular rib piece, N is the number of second reinforcing ribs, X is an integer, and the annular rib piece and the first reinforcing rib are consistent in shape;
splicing every X split pieces into a fan-shaped splicing piece, wherein the shape of the fan-shaped splicing piece is consistent with that of the fan-shaped area, and the side edge of the fan-shaped splicing piece is provided with a lap joint part;
splicing each assembled fan-shaped splicing sheet on the surface of a female die of a press matched die according to the product structure of the non-metal diaphragm, overlapping parts of the radial side edges of two adjacent fan-shaped splicing sheets are overlapped to form a second reinforcing rib, and the overlapping parts of the inner sides of the fan-shaped splicing sheets are covered with the annular rib sheets;
starting a press to solidify and mold each fan-shaped splicing sheet and each annular rib sheet to form a molded non-metallic diaphragm;
and opening the press, demolding the formed non-metal diaphragm, and processing into a non-metal diaphragm finished product.
Furthermore, the raw material is made of rubber materials, the thickness of the raw material is 120% -130% of that of the non-metal diaphragm, and the uniformity of the thickness of the raw material is controlled within +/-0.1 mm.
Optionally, the rubber material is ethylene propylene diene monomer.
Further, the width of the overlapping part of the radial side edge of the fan-shaped assembling piece is L, and the L is the width of the second reinforcing rib.
Further, the overlapping parts of the radial side edges of two adjacent fan-shaped split pieces are overlapped in a bonding mode to form a second reinforcing rib.
Further, the annular rib is covered on the lap joint part on the inner side of each fan-shaped assembling piece in an adhesion mode.
Furthermore, the operating pressure of the press is required to be more than 15MPa, the clamping gap of the clamping of the press is 0.1-0.3 mm, and the cavity of the clamping of the press is scaled according to the scaling ratio of the raw materials.
Further, start the press, make each fan-shaped amalgamation piece and cyclic annular muscle piece solidification shaping, form fashioned nonmetal diaphragm, specifically include:
starting a press, and pre-pressing each fan-shaped assembling piece and each annular rib piece until a pre-pressed forming product is obtained, wherein the pre-pressing pressure is controlled within 80% of the full pressure, and the temperature is controlled within 100 ℃;
raising the mold closing temperature of a press to 120 +/-5 ℃, applying full pressure to the pre-pressed molded product at the temperature, repeatedly pressurizing and releasing the pressure for 5-10 times, controlling the molding pressure to be within 100-120% of the full pressure design value, and controlling the pressure mold closing gap to be within the range of 0.1-0.3 mm;
and (3) curing and forming under the full pressure condition, wherein in the curing and forming process, the highest curing temperature is not lower than 150 ℃, the heat preservation time is not less than 1h, and the curing pressure is controlled within 100-120% of the designed full pressure until the temperature is reduced to the room temperature, so that the formed non-metallic diaphragm is formed.
Further, carry out pre-compaction work to each fan-shaped piece of piecing together and cyclic annular muscle piece to pre-compaction shaping product, specifically include:
prepressing the fan-shaped assembling pieces and the annular rib pieces;
after prepressing, opening a press to check the appearance quality of the preformed product, removing redundant rubber materials overflowing from the periphery, and repairing the part lacking materials;
and repeating the steps until the product is pre-pressed and formed, and ensuring that the surface of the pre-pressed and formed product is free of defects.
The invention has the beneficial effects that:
the non-metallic diaphragm of the storage tank manufactured by the method for molding the non-metallic diaphragm of the storage tank can effectively improve the thickness uniformity of products, solves the problem of thin-wall perforation, and simultaneously improves the outline size precision, the appearance quality and the product percent of pass of the products.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced 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 based on these drawings without creative efforts.
FIG. 1 is a schematic structural view of a non-metallic separator for a tank according to an embodiment of the present invention;
FIG. 2 is a schematic top view of FIG. 1;
FIG. 3 is a schematic flow chart of a method for forming a non-metallic separator for a tank according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a split sheet in a specific application;
fig. 5 is a schematic structural view of a fan-shaped assembled sheet in a specific application.
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.
Fig. 1 is a schematic structural diagram of a non-metallic separator for a storage tank according to an embodiment of the present invention, and fig. 2 is a schematic top view of fig. 1, in combination with fig. 1 and fig. 2, the non-metallic separator includes a body 1, the body 1 is hemispherical, a first reinforcing rib 2 and a plurality of second reinforcing ribs 3 are disposed on an inner surface of the body 1, the first reinforcing rib 2 is annular, the first reinforcing rib 2 is disposed in a middle portion of the inner surface of the body 1, one end of each of the plurality of second reinforcing ribs 3 is connected to an outer circumferential surface of the first reinforcing rib 2, the other end of each of the plurality of second reinforcing ribs 3 extends radially to an end surface of the body 1, and the plurality of second reinforcing ribs 3 equally divide the body 1 into N sectors (.
Because the sector area is the main bearing part of the fuel or the combustion improver, and because the nonmetal diaphragm is generally thinner, if the nonmetal diaphragm has the defects of air holes, uneven product thickness, even local perforation and the like, the sector area is not beneficial to the long-term storage of the fuel or the combustion improver.
In order to solve the problems, the embodiment of the invention provides a method for forming a non-metal diaphragm of a storage tank, which adopts a die pressing method for forming, effectively solves the problems of uneven thickness, perforation and the like in the forming process of the non-metal diaphragm by controlling the material structure, the die closing gap, the forming pressure, the exhaust in the process and the like, improves the forming dimensional precision of products, prepares products with complete structure and uniform thickness, and meets the design requirements.
Fig. 3 is a schematic flow chart of a method for forming a non-metallic separator of a storage tank according to an embodiment of the present invention, and with reference to fig. 3, the method includes:
s1: providing raw materials which comprise NX split pieces and an annular rib piece, wherein N is the number of the second reinforcing ribs, X is an integer, and the annular rib piece and the first reinforcing ribs are consistent in shape.
In the step, the raw material may be a rubber material, more specifically, ethylene propylene diene monomer, or other types of rubbers such as butadiene rubber, isoprene rubber, silicone rubber, and fluororubber, and the thickness of the raw material is 120% to 130% of the thickness of the non-metal diaphragm, and the uniformity of the thickness of the raw material is controlled within ± 0.1 mm.
S2: every X split pieces are assembled into a fan-shaped assembling piece, the shape of the fan-shaped assembling piece is consistent with that of the fan-shaped area, and the side edge of the fan-shaped assembling piece is provided with a lap joint part.
Further, in this step, the width of the overlapping portion of the radial side edge of the fan-shaped segment is L, and L is the width of the second reinforcing rib.
S3: splicing each assembled fan-shaped splicing sheet on the surface of a female die of a press matched die according to a product structure of a non-metal diaphragm, overlapping parts of the radial side edges of two adjacent fan-shaped splicing sheets are overlapped to form a second reinforcing rib, and the overlapping parts of the inner sides of the fan-shaped splicing sheets are covered with annular rib sheets;
specifically, the overlapping parts of the radial side edges of two adjacent fan-shaped split pieces are overlapped by means of bonding to form a second reinforcing rib, and the annular rib pieces can also be covered on the overlapping parts of the inner sides of the fan-shaped split pieces by means of bonding.
S4: starting a press to solidify and mold each fan-shaped splicing sheet and each annular rib sheet to form a molded non-metallic diaphragm;
the model of the press used in the embodiment of the invention can be WB71-250/WA32-315, the use pressure of the press is required to be more than 15MPa, the mold closing gap of the press mold closing is 0.1 mm-0.3 mm, and the cavity of the press mold closing is scaled according to the scaling of raw materials. For example, if the raw material is an ethylene propylene diene monomer material, the cavity of the mold closed by the press is designed to be enlarged by 4% of the design outline structure.
In the specific operation:
starting a press, prepressing the fan-shaped assembling pieces and the annular ribs to a prepressed and formed product, controlling the first prepressing pressure within 80% of the full pressure, controlling the temperature during prepressing within 100 ℃, and softening the rubber sheet under the temperature condition to have good fluidity so as to easily form the product structure; after prepressing, opening the press, checking the appearance quality of the preformed product, removing the excessive rubber material overflowing from the periphery, and repairing the part lacking the rubber material; repeating the prepressing work until the product is prepressed and molded, wherein the surface of the prepressed product basically has no defects such as material shortage, air holes and the like, and the surface of the prepressed and molded product is ensured to be free of defects;
after the prepressing is finished, raising the mold closing temperature of the press to 120 ℃, applying full pressure at the temperature, repeatedly pressurizing and releasing the pressure for 5-10 times, exhausting internal gas as much as possible, controlling the molding pressure within the range of 100-120% of the design value of the full pressure, and controlling the mold closing gap of the pressed tool within the range of 0.1-0.3 mm;
and finally, curing and forming under full pressure: in the process of curing and forming, the highest curing temperature is not lower than 150 ℃, the heat preservation time is not less than 1h, and the curing pressure is controlled within the range of 100-120% of the designed full pressure until the temperature is reduced to the room temperature, so that the formed non-metal diaphragm is formed.
S5: and opening the press, demolding the formed non-metal diaphragm, and processing into a non-metal diaphragm finished product.
The specific operation is as follows: and opening a press to mold, demolding the formed non-metal diaphragm, removing peripheral burrs, and checking the appearance quality, the internal quality and the overall dimension of the product.
It should be noted that, with reference to fig. 1, a ring of annular seal ring 4 is disposed on the outer side of the end of the main body 1 according to the embodiment of the present invention, and the annular seal ring can be formed in a die assembly manner in a press through the overlapping portion of the outer ends of the fan-shaped assembling pieces, and the size precision and position of the annular seal ring can be ensured, so that the forming quality is good.
The specific application is as follows:
according to the structure of the non-metal diaphragm product shown in the figure 1, the structural design of the special tool for die assembly of the press is carried out, the bearing capacity of the tool design is 15MPa, the die assembly gap is 0.2mm, the male die for die assembly of the press is provided with an annular overflow groove, and the cavity is enlarged by 4% according to the design size.
The nonmetal diaphragm in the application is made of ethylene propylene diene monomer rubber, and the thickness of the product is 1mm, so that the thickness of the raw material of the ethylene propylene diene monomer rubber is controlled according to 1.2 +/-0.05 mm.
The non-metal diaphragm product structure shown in fig. 1 and 2 has 8 second reinforcing ribs, 1 first reinforcing rib and 10mm width of the first reinforcing rib and the second reinforcing rib. Therefore, the split sheet 5 in the present application can be designed according to 8 pieces (i.e., N =8, X = 1), the structure of the split sheet 5 is as shown in fig. 4, the periphery of each split sheet 5 is expanded according to the 5mm overlapping part 6 after being flattened to form a fan-shaped split sheet, and the structure of the fan-shaped split sheet is as shown in fig. 5.
The cut fan-shaped split pieces 6 are spliced in a female die of a press in a bonding manner, the overlapping width of the overlapping part of the radial side edge of each 2 fan-shaped split pieces 6 is 10mm during splicing, unformed second reinforcing ribs 3 are formed, and annular reinforcing ribs 2 are covered on the overlapping part of the inner sides of the fan-shaped split pieces 6 to form unformed first reinforcing ribs 2, as shown in fig. 5.
After splicing the fan-shaped splicing pieces, prepressing the spliced fan-shaped splicing pieces, wherein the total pressure of a product is 10MPa, the control pressure during prepressing is 7.5-8 MPa, the prepressing temperature is 80 ℃, opening a press after prepressing, checking the appearance quality of the preformed product, removing redundant sizing materials overflowing from the periphery, and repairing the material shortage part; and repeating the prepressing work until the product is prepressed and molded, and ensuring that the surface of the prepressed and molded product is free of defects.
And (3) pre-pressing and forming a product, applying full pressure at 120 ℃, controlling the full pressure at 10-11 MPa, exhausting for 5 times in the process, and finally setting the die closing gap of a press at 0.2-0.3 mm.
Curing and molding under full pressure, namely curing and molding a product under the conditions of 120 +/-5 ℃ (heat preservation for 2 h) → 155 +/-5 ℃ (heat preservation for 2 h) → room temperature, wherein the pressure is controlled to be 10-11 MPa in the curing process;
and finally, opening a press to mold, demolding the formed non-metal diaphragm, removing peripheral burrs, and checking the appearance quality, the internal quality and the overall dimension of the product.
The storage tank non-metal diaphragm manufactured by the storage tank non-metal diaphragm forming method provided by the embodiment of the invention can effectively improve the thickness uniformity of products, solves the problem of thin-wall perforation, and simultaneously improves the outline size precision, the appearance quality and the product percent of pass of the products.
The following embodiments are provided for the purpose of illustrating the present invention and are not to be construed as limiting the present invention in any way, and it will be apparent to those skilled in the art that the technical features of the present invention can be modified or changed in some ways without departing from the scope of the present invention.
Claims (7)
1. A forming method of a non-metallic diaphragm of a storage tank is characterized in that the non-metallic diaphragm comprises a body, the body is hemispherical, a first reinforcing rib and a plurality of second reinforcing ribs are arranged on the inner surface of the body, the first reinforcing rib is annular, the first reinforcing rib is arranged in the middle of the inner surface of the body, one ends of the second reinforcing ribs are connected to the outer peripheral surface of the first reinforcing rib, the other ends of the second reinforcing ribs radially extend to the end surface of the body, and the body is equally divided into N fan-shaped areas by the second reinforcing ribs;
the molding method comprises the following steps:
providing a raw material, wherein the raw material is made of a rubber material, the thickness of the raw material is 120% -130% of the thickness of the nonmetal diaphragm, the uniformity of the thickness of the raw material is controlled within +/-0.1 mm, the raw material comprises NX split pieces and an annular rib piece, N is the number of second reinforcing ribs, X is an integer, and the annular rib piece and the first reinforcing ribs are consistent in shape;
splicing every X split pieces into a fan-shaped splicing piece, wherein the shape of the fan-shaped splicing piece is consistent with that of the fan-shaped area, and the side edge of the fan-shaped splicing piece is provided with a lap joint part;
splicing each assembled fan-shaped splicing sheet on the surface of a female die of a press matched die according to the product structure of the non-metal diaphragm, overlapping parts of the radial side edges of two adjacent fan-shaped splicing sheets are overlapped to form a second reinforcing rib, and the overlapping parts of the inner sides of the fan-shaped splicing sheets are covered with the annular rib sheets;
starting a press, and pre-pressing each fan-shaped assembling piece and each annular rib piece until a pre-pressed forming product is obtained, wherein the pre-pressing pressure is controlled within 80% of the full pressure, and the temperature is controlled within 100 ℃;
raising the mold closing temperature of a press to 120 +/-5 ℃, applying full pressure to the pre-pressed molded product at the temperature, repeatedly pressurizing and releasing the pressure for 5-10 times, controlling the molding pressure to be within 100-120% of the full pressure design value, and controlling the pressure mold closing gap to be within the range of 0.1-0.3 mm;
curing and molding under full pressure, wherein in the curing and molding process, the highest curing temperature is not lower than 150 ℃, the heat preservation time is not less than 1h, and the curing pressure is controlled within 100-120% of the designed full pressure until the temperature is reduced to room temperature to form a molded non-metallic diaphragm;
and opening the press, demolding the formed non-metal diaphragm, and processing into a non-metal diaphragm finished product.
2. The method for forming a non-metallic separator of a storage tank according to claim 1, wherein the rubber material is ethylene propylene diene monomer.
3. The method of claim 1, wherein the overlapping portion of the radial side of the fan-shaped assembled piece has a width L, and the L is the width of the second reinforcing rib.
4. The method for forming a nonmetallic separator of a storage tank according to claim 1, wherein the overlapping portions of the radial side edges of two adjacent fan-shaped split pieces are overlapped by means of bonding to form a second reinforcing rib.
5. The method for forming a nonmetallic separator of a storage tank according to claim 1, wherein the annular rib is covered on the overlapping part of the inner side of each fan-shaped split piece by means of bonding.
6. The method for molding the non-metallic diaphragm of the storage tank according to any one of claims 1 to 5, wherein the pressure for using the press is required to be more than 15MPa, the clamping gap of the clamping of the press is 0.1mm to 0.3mm, and the cavity of the clamping of the press is scaled according to the scaling of the raw materials.
7. The forming method of the non-metal diaphragm of the storage tank according to claim 1, wherein the pre-pressing work is performed on each of the fan-shaped assembling pieces and the annular ribs to a pre-pressed product, and specifically comprises:
prepressing the fan-shaped assembling pieces and the annular rib pieces;
after prepressing, opening a press to check the appearance quality of the preformed product, removing redundant rubber materials overflowing from the periphery, and repairing the part lacking materials;
and repeating the steps until the product is pre-pressed and formed, and ensuring that the surface of the pre-pressed and formed product is free of defects.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910868867.1A CN110450307B (en) | 2019-09-16 | 2019-09-16 | Method for forming non-metal diaphragm of storage tank |
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| CN201910868867.1A CN110450307B (en) | 2019-09-16 | 2019-09-16 | Method for forming non-metal diaphragm of storage tank |
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| CN110450307B true CN110450307B (en) | 2021-04-20 |
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| CN113479348B (en) * | 2021-07-02 | 2023-03-21 | 兰州空间技术物理研究所 | Membrane sealing and clamping assembly capable of achieving real-time and efficient discharge in multi-dimensional high-speed flight |
| CN114131957B (en) * | 2021-11-12 | 2023-12-19 | 湖北三江航天红阳机电有限公司 | Mold for large-size RTM product and preparation method of RTM product |
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| DE10150659A1 (en) * | 2001-10-17 | 2003-05-08 | Kraft Uwe | Molding tool for production of thin walled fiber reinforced plastic products includes an edge clamping frame and/or cover plate and a pressurized flexible sheet for compression of impregnated fiber reinforcement |
| CN106553290A (en) * | 2016-11-30 | 2017-04-05 | 江西洪都航空工业集团有限责任公司 | A kind of high-precision reflector composite shaping moudle structure and its moulding technique |
| CN106586035A (en) * | 2016-12-09 | 2017-04-26 | 大连理工大学 | Launch vehicle low-temperature composite storage tank with triangular sandwich wall and processing method of tank |
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2019
- 2019-09-16 CN CN201910868867.1A patent/CN110450307B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2085216U (en) * | 1990-11-27 | 1991-09-25 | 唐德铭 | Cleaning diaphragm for washbasin |
| CN1128700A (en) * | 1994-11-08 | 1996-08-14 | 佳能株式会社 | Tubular film, method for mfg. same and image formation device with tubular film |
| DE10150659A1 (en) * | 2001-10-17 | 2003-05-08 | Kraft Uwe | Molding tool for production of thin walled fiber reinforced plastic products includes an edge clamping frame and/or cover plate and a pressurized flexible sheet for compression of impregnated fiber reinforcement |
| CN106553290A (en) * | 2016-11-30 | 2017-04-05 | 江西洪都航空工业集团有限责任公司 | A kind of high-precision reflector composite shaping moudle structure and its moulding technique |
| CN106586035A (en) * | 2016-12-09 | 2017-04-26 | 大连理工大学 | Launch vehicle low-temperature composite storage tank with triangular sandwich wall and processing method of tank |
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| CN110450307A (en) | 2019-11-15 |
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