A heatable composite material mold and a manufacturing method thereof

Abstract

The present invention relates to the technical field of composite molds, and specifically to a heatable composite material mold and a manufacturing method thereof. The heatable composite material mold comprises two groups of mold assemblies, and the two groups of mold assemblies are combined to form a mold cavity. The mold assembly comprises a steel frame and a female mold, and a copper tube is arranged in the female mold. An adjusting mechanism is arranged between the steel frame and the female mold. The adjusting mechanism comprises: a support member connected to the female mold; an outer cylinder connected to the steel frame; an elastic ring connecting the support member and the outer cylinder so that the support member can move horizontally relative to the outer cylinder. The elastic ring comprises: an outer ring body fixedly connected to the outer cylinder; an inner ring body rotatably connected to the support member; an empty groove opened between the outer ring body and the inner ring body, and a connecting beam is formed between adjacent empty grooves, and the connecting beam connects the outer ring body and the inner ring body. The connecting beam is embedded with a strain gauge. It reduces the stress concentration of the mold and increases the service life of the mold.

Description

Technical Field

[0001] The invention relates to the technical field of composite moulds, in particular to a heatable composite material mould and a manufacturing method thereof. Background Art

[0002] The existing composite material mold consists of a glass fiber reinforced plastic layer and a steel frame support. First, the glass fiber reinforced plastic layer is laid one by one on the positive model surface for flipping. Then the steel frame support is flipped over and pressed on the glass fiber reinforced plastic layer. The embedded pipe contained in the steel frame support is directly glued to the glass fiber reinforced plastic layer. After the glass fiber reinforced plastic layer is solidified, the composite material mold is demoulded as a whole, flipped over and installed in place.

[0003] It is simple to make, low cost, high production efficiency, and suitable for the price requirements of most products. However, it has a greater impact on the use in areas with large temperature changes in four seasons. The mold itself has no heating function, and the resin curing reaction is slow at low temperatures, which seriously affects production efficiency. If a resin that requires heating to cure (such as epoxy resin) is used, it will not meet the use requirements.

[0004] And if the mold has a heating function, the female mold made of composite materials and the steel frame will be at different temperatures. Therefore, it is very important to solve the contradiction between the thermal expansion and contraction of the composite materials and the steel frame. Summary of the invention

[0005] In order to solve the technical problems existing in the background technology, the present invention provides a heatable composite material mold and a manufacturing method thereof, which reduces the stress concentration of the mold and increases the service life of the mold.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A heatable composite material mold includes two sets of mold assemblies, the two sets of mold assemblies are combined to form a mold cavity, the mold assembly includes a steel frame and a female mold, and a copper tube is arranged in the female mold. An adjustment mechanism is arranged between the steel frame and the female mold, and the adjustment mechanism includes:

[0008] A support member connected to the female mold;

[0009] The outer cylinder is connected to the steel frame;

[0010] The elastic ring connects the support member and the outer cylinder so that the support member can move horizontally relative to the outer cylinder.

[0011] Further, the elastic ring comprises:

[0012] An outer ring body, fixedly connected to the outer cylinder;

[0013] An inner ring body, rotatably connected to the support member;

[0014] The hollow grooves are arranged between the outer ring body and the inner ring body, and connecting beams are formed between adjacent hollow grooves, and the connecting beams connect the outer ring body and the inner ring body.

[0015] Furthermore, the connecting beam is embedded with a strain gauge.

[0016] Furthermore, a liftable top plate is provided inside the outer cylinder;

[0017] Top plate includes:

[0018] A limit plate is arranged in the outer cylinder in a liftable manner;

[0019] The limiting protrusion is arranged on the limiting plate, the limiting protrusion matches the empty slot, and the limiting protrusion can be embedded in the empty slot.

[0020] Furthermore, the regulating mechanism also includes:

[0021] A base, fixedly connected to the steel frame;

[0022] A connecting seat is rotatably arranged on the base;

[0023] The outer cylinder is rotatably arranged on the connecting seat, and the outer cylinder can rotate eccentrically relative to the connecting seat.

[0024] Further, the outer cylinder comprises: a cylinder body, an elastic ring is fixedly arranged at the upper end of the cylinder body, and a first connecting hole is eccentrically opened at the lower end of the cylinder body;

[0025] The connecting seat comprises: a connecting plate, a connecting tube eccentrically arranged at the upper end of the connecting plate, the connecting tube being rotatably connected to the first connecting hole; a second connecting hole passing through the connecting plate and the connecting tube, the second connecting hole being concentrically arranged with the connecting plate;

[0026] The base comprises: a chassis, the chassis is fixedly connected to the steel frame, a connecting column is arranged at the upper end of the chassis, and the connecting column is rotatably connected to the second connecting hole.

[0027] Furthermore, a liftable pressure plate is arranged inside the outer tube, and the pressure plate includes a locking plate, and the locking plate can be pressed on the upper ends of the connecting tube and the connecting column to lock the connecting tube and the connecting column.

[0028] Furthermore, a top groove is formed at the upper end of the pressing plate, and a bottom groove is formed at the lower end of the top plate;

[0029] A rotatable swivel is provided inside the outer cylinder;

[0030] The swivel includes:

[0031] An intermediate ring is rotatably disposed in the outer cylinder;

[0032] The first protrusion is arranged on one side of the middle ring and cooperates with the bottom groove to drive the top plate to rise and fall;

[0033] The second protrusion is arranged on the other side of the middle ring and cooperates with the top groove to drive the pressing plate to rise and fall.

[0034] Furthermore, a rotating arm is arranged on the outer periphery of the middle ring, a side hole is opened on the cylinder body, and the rotating arm passes through the side hole and extends to the outside of the outer cylinder.

[0035] A method for manufacturing a heatable composite material mold comprises the following steps:

[0036] S1. Preparation of positive mold; S2. Inspection of positive mold; S3. Treatment of positive mold; S4. Surface treatment of positive mold; S5. Preparation of gel coat layer; S6. Pasting of surface felt layer; S7. Pasting of chopped felt layer; S8. Preparation of front layer; S9. Preparation of thermal conductive putty layer; S10. Installation of copper pipe; S11. Preparation of insulation layer; S12. Preparation of back layer; S13. Installation and fixing of steel frame; S14. Preparation of external insulation layer; S15. Post-curing; S16. Painting; S17. Demoulding; S18. Cutting; S19. Surface treatment of negative mold.

[0037] Beneficial effects of the present invention:

[0038] (1) A copper tube is buried in the female mold. The medium flowing in the copper tube can heat the female mold, giving the mold a heating function, making the resin cure faster and improving production efficiency. It can also improve the mechanical properties of the resin after curing.

[0039] (2) The adjustment mechanism can detect whether there is stress between the female mold and the steel frame. When stress is generated between the female mold and the steel frame due to thermal expansion and contraction, the connecting beam on the elastic ring will deform, which can be detected by the strain gauge on the connecting beam.

[0040] (3) The adjustment mechanism can adjust the connection position between the support member on the female mold and the steel frame. By cooperating with the outer cylinder, the connecting seat and the base, the outer cylinder and the connecting seat can be rotated to adjust the position of the support member relative to the steel frame, thereby eliminating the stress between the female mold and the steel frame. The contradiction between the thermal expansion and contraction of the composite material and the steel frame is resolved, thereby reducing the stress concentration of the mold.

[0041] (4) Adjust the support to the appropriate position, and the deformation of the connecting beam on the elastic ring disappears, that is, the stress between the female mold and the steel frame is eliminated. Then turn the swivel to lock the position of the support to prevent it from shifting during the work process.

[0042] (5) The manufacturing process of the heating mold is more reasonable, the mold strength is higher and the service life is longer. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0044] Figure 1 It is a usage state diagram of the present invention;

[0045] Figure 2 It is a schematic diagram of the structure of the present invention;

[0046] Figure 3 It is a structural diagram of the regulating mechanism;

[0047] Figure 4 It is an exploded view of the regulating mechanism;

[0048] Figure 5 is a partial cross-sectional view of the adjustment mechanism;

[0049] Figure 6 is a schematic diagram of the structure of an elastic ring;

[0050] Figure 7 This is the structure diagram of the top plate. Figure 1 ;

[0051] Figure 8 This is the structure diagram of the top plate. Figure 2 ;

[0052] Fig. 9 It is a schematic diagram of the structure of the swivel;

[0053] Fig.10 This is the structure diagram of the outer cylinder Figure 1 ;

[0054] Fig.11 This is the structure diagram of the outer cylinder Figure 2 ;

[0055] Fig.12 It is a structural schematic diagram of the pressure plate;

[0056] Fig.13 It is a structural diagram of the connecting seat;

[0057] Fig.14 It is a schematic diagram of the structure of the base.

[0058] In the picture:

[0059] 1. Mold components;

[0060] 11. Steel frame, 12. Female mold, 13. Adjustment mechanism;

[0061] 131. support member, 132. elastic ring, 133. top plate, 134. swivel, 135. outer cylinder, 136. pressing plate, 137. connecting seat, 138. base;

[0062] 1321. outer ring body, 1322. connecting beam, 1323. inner ring body, 1324. empty slot;

[0063] 1331. Limiting plate, 1332. Limiting protrusion, 1333. Bottom groove;

[0064] 1341. middle ring, 1342. first protrusion, 1343. second protrusion, 1344. rotating arm;

[0065] 1351. Cylinder, 1352. Mounting cavity, 1353. Side hole, 1354. First connecting hole;

[0066] 1361. Locking plate, 1362. Top slot;

[0067] 1371. connecting plate, 1372. connecting tube, 1373. second connecting hole;

[0068] 1381. Chassis, 1382. Connecting column. DETAILED DESCRIPTION

[0069] The present invention is further described in detail below with reference to the accompanying drawings.

[0070] A heatable composite material mold, which is mainly used to make wind turbine blades. It includes two sets of mold assemblies 1, which can be combined to form a mold cavity. The mold assembly 1 includes a steel frame 11 and a female mold 12, the female mold 12 is a composite material, and the steel frame 11 is used to support the female mold 12. The steel frame 11 must meet the strength and rigidity requirements. When the mold assembly 1 is lifted and turned over, the steel frame 11 must be able to withstand a gravity of about 20 tons without plastic deformation.

[0071] The female mold 12 is provided with a copper tube, which covers the mold product area and the parting surface, thereby forming a mold heating frame. The copper tube is connected to a high-power water heater, and hot water is directly injected into the copper tube to realize hot water circulation. The medium flowing in the copper tube can heat the female mold 12, so that the mold has a heating function, so that the resin cures faster and improves production efficiency. It can also improve the mechanical properties of the resin after curing.

[0072] The adjustment mechanism 13 is arranged between the steel frame 11 and the female mold 12. There are several adjustment mechanisms 13, which are supported at multiple positions of the female mold 12 respectively. The adjustment mechanism 13 includes a support member 131, and the support member 131 is fixedly connected to the female mold 12. The support member 131 is generally pre-buried in the female mold 12. The outer cylinder 135 is connected to the steel frame 11. The elastic ring 132 connects the support member 131 and the outer cylinder 135, so that the support member 131 can move horizontally relative to the outer cylinder 135, so that the support member 131 has a certain horizontal range of motion relative to the steel frame 11.

[0073] The specific structure of the elastic ring 132 includes an outer ring body 1321, and the outer ring body 1321 is fixedly connected to the outer cylinder 135. An inner ring body 1323 is arranged inside the outer ring body 1321. The inner ring body 1323 is rotatably connected to the support member 131. An empty groove 1324 is provided between the outer ring body 1321 and the inner ring body 1323, and a connecting beam 1322 is formed between adjacent empty grooves 1324, and the connecting beam 1322 connects the outer ring body 1321 and the inner ring body 1323. In a specific implementation, the connecting beam 1322 is arc-shaped, and a strain gauge is embedded in the connecting beam 1322.

[0074] When the inner ring body 1323 moves horizontally relative to the outer ring body 1321, the connecting beam 1322 can undergo a certain elastic deformation. The strain gauge can detect this elastic deformation. Thus, the adjustment mechanism has the function of detecting whether there is stress between the female mold 12 and the steel frame 11. When stress is generated between the female mold 12 and the steel frame 11 due to thermal expansion and contraction, the connecting beam 1322 on the elastic ring will be deformed, which will be detected by the strain gauge on the connecting beam 1322.

[0075] A liftable top plate 133 is disposed inside the outer cylinder 135. The top plate 133 specifically includes a limit plate 1331, which is liftably disposed inside the outer cylinder 135. A limit protrusion 1332 is provided at the upper end of the limit plate 1331, and the limit protrusion 1332 matches the empty groove 1324 on the elastic ring 132, and the limit protrusion 1332 can be inserted into the empty groove 1324.

[0076] When the limiting protrusion 1332 is inserted into the empty groove 1324, the connecting beam 1322 is fixed and cannot be elastically deformed. The relative positions of the inner ring body 1323 and the outer ring body 1321 are fixed, and the inner ring body 1323 cannot move. At this time, the inner ring body 1323 is located at the center of the outer ring body 1321.

[0077] The adjustment mechanism 13 further includes a base 138, and the base 138 is fixedly connected to the steel frame 11. The connecting seat 137 is rotatably disposed on the base 138. The outer cylinder 135 is rotatably disposed on the connecting seat 137, and the outer cylinder 135 can rotate eccentrically relative to the connecting seat 137.

[0078] In a specific implementation, the specific structure of the outer cylinder 135 includes a cylinder body 1351, and the elastic ring 132 is fixedly arranged at the upper end of the cylinder body 1351. The first connecting hole 1354 is eccentrically opened at the lower end of the cylinder body 1351. The specific structure of the connecting seat 137 includes a connecting disk 1371, and a connecting cylinder 1372 is eccentrically arranged at the upper end of the connecting disk 1371. The connecting cylinder 1372 is rotatably connected to the first connecting hole 1354. The second connecting hole 1373 passes through the connecting disk 1371 and the connecting cylinder 1372, and the second connecting hole 1373 is concentrically arranged with the connecting disk 1371. The specific structure of the base 138 includes a chassis 1381, the chassis 1381 is fixedly connected to the steel frame 11, and a connecting column 1382 is arranged at the upper end of the chassis 1381, and the connecting column 1382 is rotatably connected to the second connecting hole 1373.

[0079] The adjustment mechanism 13 can adjust the connection position between the support member 131 on the female mold 12 and the steel frame 11. Through the cooperation of the outer cylinder 135, the connection seat 137 and the base 138, the outer cylinder 135 and the connection seat 137 are rotated to adjust the position of the support member 131 relative to the steel frame 11, thereby eliminating the stress between the female mold 12 and the steel frame 11. The contradiction between the thermal expansion and contraction of the composite material and the steel frame is resolved, thereby reducing the stress concentration of the mold.

[0080] A lifting and lowering pressing plate 136 is arranged inside the outer cylinder 135. The pressing plate 136 includes a locking plate 1361. The locking plate 1361 can be pressed on the upper ends of the connecting cylinder 1372 and the connecting column 1382 to lock the connecting cylinder 1372 and the connecting column 1382. In a specific implementation, the lower end surface of the locking plate 1361 is provided with an anti-skid pattern or a rubber layer, and the upper end surfaces of the connecting cylinder 1372 and the connecting column 1382 are also provided with an anti-skid pattern or a rubber layer. This structure can increase the friction between the locking plate 1361 and the upper end surfaces of the connecting cylinder 1372 and the connecting column 1382, so that the connecting cylinder 1372 and the connecting column 1382 can be reliably locked by the locking plate 1361.

[0081] A top groove 1362 is formed at the upper end of the pressure plate 136. A bottom groove 1333 is formed at the lower end of the top plate 133. A rotatable swivel 134 is disposed in the outer cylinder 135. The swivel 134 includes an intermediate ring 1341, which is rotatably disposed in the outer cylinder 135. A first protrusion 1342 is disposed on one side of the intermediate ring 1341, and cooperates with the bottom groove 1333 to drive the top plate 133 to rise and fall. A second protrusion 1343 is disposed on the other side of the intermediate ring 1341, and cooperates with the top groove 1362 to drive the pressure plate 136 to rise and fall.

[0082] After the support member 131 is adjusted to a suitable position by rotating the outer cylinder 135 and the connecting seat 137, the deformation of the connecting beam 1322 on the elastic ring 132 disappears, that is, the stress between the female mold 12 and the steel frame 11 is eliminated. At this time, the inner ring body 1323 is located at the center of the outer ring body 1321. Then the rotating ring 134 is rotated, the top plate 133 rises, the limiting protrusion 1332 is inserted into the empty groove 1324, the connecting beam 1322 is fixed, and the connecting beam 1322 cannot be elastically deformed. The relative position of the inner ring body 1323 and the outer ring body 1321 is fixed. At the same time, the pressing plate 136 descends, and the pressing plate 136 presses on the upper ends of the connecting cylinder 1372 and the connecting column 1382, so that the connecting cylinder 1372 and the connecting column 1382 are locked. The above operation can lock the position of the support member 131 to prevent it from shifting relative to the steel frame 11 during operation.

[0083] For easy operation, a rotating arm 1344 is provided on the outer periphery of the middle ring 1341, and a side hole 1353 is provided on the cylinder body 1351. The rotating arm 1344 passes through the side hole 1353 and extends to the outside of the outer cylinder 135. By operating the rotating arm 1344, the rotating ring 134 can be driven to rotate. The outer walls of the outer cylinder 135 and the connecting seat 137 are also provided with operating holes for easy twisting.

[0084] In a specific implementation, the upper end of the outer cylinder 135 is provided with a mounting cavity 1352, and the mounting cavity 1352 is communicated with the first connecting hole 1354. The elastic ring 132, the top plate 133, the rotating ring 134 and the pressing plate 136 are all arranged in the mounting cavity 1352. Among them, the elastic ring 132 is fixedly connected to the mounting cavity 1352. The top plate 133 can only be lifted and lowered in the mounting cavity 1352. The rotating ring 134 can only be rotated in the mounting cavity 1352. The pressing plate 136 can only be lifted and lowered in the mounting cavity 1352.

[0085] A method for manufacturing a heatable composite material mold, wherein the heating mold manufacturing process is more reasonable, the mold strength is higher, and the service life is longer, comprises the following steps:

[0086] 1. Preparation of male mold:

[0087] Remove the plastic layer covering the male mold, fold it neatly and put it away. Use compressed air to blow away dust, granular and other foreign matter on the surface of the male mold, and then use a cotton rag to clean the dust on the surface of the male mold, including cleaning the flange edge.

[0088] 2. Positive mold inspection:

[0089] Use a tape measure to mark several positions on the front and rear edges of the male mold surface along the male mold parting surface from the root of the male mold, and clearly write the distance along the length direction. Prepare the metal pallet for checking the male mold surface, and use the metal pallet at the corresponding position marked in 2.1 to start checking the male mold surface. Pay attention to check the match between the pallet and the mold surface, and mark the mismatch with a marker. The entire surface condition of the male mold is inspected, mainly to check the defects on the male mold surface, including: pores, bumps, cracks, smoothness, flatness and other defects, and mark the defects with a marker.

[0090] 3. Male mold processing:

[0091] Start repairing at the place marked in the positive mold inspection. First, grind off the gel coat where there are defects and sizes that do not match, then fill it with putty, wait for solidification, and grind it. The weight ratio of putty mixing is: putty: hardener = 100:2, applicable period: 7-10min, grinding time: 25℃, 1h. Where there are bubbles, use a utility knife to treat the gel coat near the bubbles according to the size of the bubbles, and fill it with putty, solidify, and grind it. In rough and uneven places, use 400 mesh, 600 mesh, or 800 mesh water sandpaper according to the actual situation to grind until the inspection is qualified. After the defects and other shortcomings are dealt with, clean the surface of the positive mold comprehensively to ensure that the entire mold surface is flat, the transition is smooth, there is no foreign matter, and it meets the A-level surface quality requirements.

[0092] 4. Surface treatment of male mold:

[0093] Use cotton cloth to apply sealing agent FMS on the entire surface of the male mold for 3 times, with an interval of 10 minutes between each application. Use cotton cloth to apply 8# release wax on the entire surface of the male mold in a spiral manner for 3 times, with an interval of 10 to 15 minutes between each application. The thickness should be about 0.02mm. After the third application, wipe it vigorously with a clean cotton cloth. Use cotton cloth to apply release agent 55-NC for 3 times, with an interval of 10 to 15 minutes between each application. Use sealing tape to stick on the surface of the male mold, press it firmly and keep it for 5 minutes, then check the difficulty of demolding; if it is difficult to release, apply release agent 55-NC twice more.

[0094] 5. Gel coat production:

[0095] Measure 50mm and 100mm inward along the edge of the male mold flange, draw lines on the entire flange, and make two marking lines. Use a 300mm wide vacuum bag film to stick the vacuum bag film on the male mold along the second marking line, and turn the vacuum bag film outward. Measure several points from the root of the male mold to the tip to mark the glue application area and glue application amount. Mix the gel coat according to the gel coat mass ratio: XD4615:HY5159=100:15. Use a plastic scraper to scrape the evenly mixed gel coat on the designated areas, and then use a roller to apply it; the thickness of the first layer is controlled at 0.5mm, and the thickness of the second layer is controlled at 0.7mm, and the interval between the two times is at least 2h.

[0096] 6. Surface felt layer paste:

[0097] Mix the resin according to the resin mass ratio: LY113:HY98=100:30. First, apply the mixed resin on the entire gel coat layer with a wool roller, and then start from the root of the male mold, apply a layer of surface felt on the root vertical flange edge, the entire mold surface, and the flange edge radially, and then compact the surface felt with a roller and a brush.

[0098] 7. Chopped Strand Mat Pasting:

[0099] Mix the resin according to the resin mass ratio: LY113:HY98=100:30. First, apply the mixed resin on the entire surface felt layer with a wool roller, and then start from the root of the male mold, paste a layer of chopped felt radially on the root flange edge, the entire mold surface, and the flange edge, and then compact the surface felt with a roller and a brush. Paste a layer of demoulding cloth 75g / ㎡ radially. Wait for the resin to solidify. When the resin solidifies, peel off the plastic film on the edge of the flange, measure 50mm and 120mm from the flange edge to paste two circles of sealing strips, put a circle of spiral tube between the strips, and then create a vacuum between the two strips to draw negative pressure.

[0100] 8. Front layer production:

[0101] 8.1 Fiberglass laying: Lay the (pre-cut) four-axial fiberglass from the root of the male mold on the root vertical flange edge, the entire mold surface, and the flange edge. Cut the edge of the four-axial fiberglass flange and compact the corners.

[0102] 8.2 Establishment of vacuum layer: First, radially lay a layer of demoulding cloth with a width of 1800mm on the positive mold four-axis glass fiber, with an overlap of 100mm, covering all the four-axis cloth, a layer of perforated isolation film, and axially lay a layer of guide net; control the laying and smoothing, fix it with cotton thread and sealing strips to prevent sliding; control the guide net at the front and rear edges to be 30mm away from the edge of the four-axis cloth. Arrange the plastic screen, ohm tube, spiral tube, exhaust pipe and injection point according to the vacuum introduction layout diagram. Paste two circles of sealing strips on the flange edge of the positive mold 280mm and 360mm from the edge. Then start pasting the vacuum bag with a width of 4000mm, requiring folding every 2m, and install the exhaust pipeline according to the vacuum introduction layout diagram. After the vacuum layer is established, pinch the injection port, connect the vacuum pump, resin collector and exhaust pipe, and start to evacuate. When the negative pressure is -0.06Mpa, close the valve in front of the vacuum pump, and start to adjust the position of the ohm tube, spiral tube, and vacuum bag film. After the adjustment, continue to evacuate to a negative pressure of -0.1Mpa, continue to evacuate for 20 minutes, then close the valve in front of the vacuum pump, start to maintain the pressure for 10 minutes, and then observe the reading of the vacuum gauge. If the negative pressure is above -0.096MPa, it is qualified; otherwise, check for leaks and maintain the pressure until it is qualified. During the process of evacuating the negative pressure, pay attention to compacting the corners with flat and non-angular tools. Place a guide net with a width of 300mm on the first layer of vacuum bag, with an interval of 3m / channel, and then establish the second layer of vacuum bag film, and wrap the end of the exhaust pipe with a guide net; then evacuate the negative pressure and maintain the pressure. The pressure maintenance requirements are the same.

[0103] 8.3 Vacuum introduction: Pour the mixed resin into the resin buffer tank, let it stand for 10 minutes, then open the 1# pipe first, and when the resin flows more than the 2# and 3# ohm tubes, open the injection pipe connected to the 2# and 3# ohm tubes. Open the remaining pipes in turn according to this requirement, and pay attention to the flow of the resin. Resin mass ratio: LY113:HY98=100:30. Resin temperature: 20~35℃, glass fiber layer temperature: 25~32℃, resin mixed viscosity: 300~600mpa.s. When the resin fills the entire glass fiber layer, pinch the exhaust pipes in the corresponding areas in turn, and continue to vacuum, and keep the injection pipes open for 20 minutes. When the resin reaches each part, pinch all the injection pipes. Continue to vacuum and wait for the resin to solidify. Curing conditions: 25~35℃, curing for 10h. When the resin reaches the curing time, remove the auxiliary material layer outside the demoulding cloth, but continue to maintain the vacuum on the flange edge.

[0104] 9. Production of thermal conductive putty layer:

[0105] Remove the oil stains and other debris on the aluminum mesh in advance, and paste the aluminum mesh on the upper surface of the mold and the flange edge, and the flange edge of the root from the root or tip. Use 502 glue mixed with glass beads to paste and fix on the parting surface and near the flange edge. Use transparent tape to paste a plastic film with a width of 200mm on the flange skirt of the mold. Start mixing copper powder putty, and then evenly scrape it on the aluminum mesh. Putty mass ratio: LY3505: XB3403: copper powder: 403B: fumed silica = 100: 35: 35: 10: 6. After scraping the first layer, start putting the second layer of aluminum mesh and hanging the second copper powder putty, with the same requirements. Note that the corners of the male mold should be compacted and filled fully, and the flange width should be controlled at 220mm. The total thickness of the two times is required to reach 5mm.

[0106] 10. Install copper pipe:

[0107] 10.1 Remove the auxiliary materials on the heat-conducting layer, and start to tear off the demoulding cloth 20 minutes before the next step. Starting from the flange edge near the root of the male mold, use a marker to make position marks at the front and rear edges according to the copper tube laying drawing requirements, and then connect the marks between the front and rear edges at the same position, and record the number of wooden blocks to be pasted at each location. Mix copper powder putty, and then paste the wooden blocks of length * width * thickness = 55 * 15 * 10 and 85 * 15 * 10 on the marked lines according to the requirements of the drawing. It is necessary to pay attention to control the spacing between the wooden blocks to accommodate the copper tube. Putty mass ratio: LY3505: XB3403: copper powder: 403B: fumed silica = 100: 35: 35: 10: 6. Wait for the copper powder putty to solidify.

[0108] 10.2 According to the requirements on the copper pipe installation drawing, pre-cut and pre-bend the copper pipe. For the bent copper pipe, wrap and seal it with masking tape at both ends, and mark the position. Carry out a sealing test on the copper pipe, fill it with water, and check whether there is leakage. The pipe without leakage can be used. Then clean the oil stains on the pipe. Install the copper pipe to the copper powder putty layer, put the copper pipe into the gap between the wooden blocks, and use a wooden hammer to knock the copper pipe close to the putty layer. Be sure not to flatten the copper pipe. Wrap one end of the water inlet and outlet of the copper pipe with plastic film to prevent pollution and foreign matter; then fix the copper pipe with a homemade fiberglass strip.

[0109] 10.3 Use transparent tape to stick a 200mm wide plastic film on the mold flange skirt for protection. Apply the evenly mixed copper powder putty between the copper tubes. Apply evenly. Lay 100mm wide and one-inch thick balsa wood between the copper tubes while applying. Lay 200mm wide balsa wood with a chamfer of 1:1 on the flange edge. Putty mass ratio: LY3505: XB3403: copper powder: 403B: fumed silica = 100: 35: 35: 10: 6. Wait for the putty to solidify.

[0110] 11. Insulation layer production:

[0111] Use transparent tape to stick a 200mm wide plastic film on the mold flange skirt. Start mixing the thermal insulation putty, then evenly scrape the mixed putty between the balsa wood, and then cure it. Putty mass ratio: LY3505: XB3403: glass beads: 403B: fumed silica = 100: 35: 25: 10: 3. After the first layer of scraping is completed and reaches the curing requirements, start scraping the second layer of thermal insulation putty, and then cure it.

[0112] 12. Back layer production:

[0113] Clean the surface, protect the copper pipe end, lay a layer of chopped felt on the insulation layer, the flange width of the chopped felt is 220mm, the laying requirements of glass fiber are the same, and the root flange is laid with a thickness of one inch and a density of 150g / m3 of balsa wood. Establish a vacuum layer. Vacuum introduction. Resin mass ratio: LY564: 22962 = 100: 25. Curing, curing time: at least 24 hours at room temperature.

[0114] 13. Install and fix the steel frame:

[0115] Complete the welding of the steel frame in accordance with the requirements of the "Steel Frame Production Operation Instructions" to ensure that there are no defects such as false welding and leaking welding. First, tear off the auxiliary material layer and demoulding cloth on the FRP layer, and strictly follow the requirements of the "Lifting Operation Instructions" to slowly lift the steel frame to the reversed negative mold, adjust the position, and weld the support part. Mix the resin, and then use a plastic scraper to scrape it between the steel pipe and the FRP layer, with each interval of about 500mm. Resin mass ratio: 730E: 735H: cotton fiber: its phase silica = 100: 34: 10: 6. Completely soak the pre-cut four-axial glass fiber cloth with resin, and then paste it on the steel frame to fix the steel frame and the FRP layer. Four-axial glass fiber: width 300mm, length 500mm. Resin mass ratio: 730E: 735H = 100: 34. Wait for curing: room temperature 5h.

[0116] 14. Production of external insulation layer:

[0117] Wrap the thermal insulation rock wool with aluminum foil and aluminum foil tape, then lay it between the steel frame and the FRP layer, close to the FRP layer, and then press it firmly with homemade FRP strips. Wrap the copper pipe inlet and outlet with polyester insulation pipe.

[0118] 15. Post-curing:

[0119] Install the water inlet and outlet of the heating system and connect it to the heating water circulation system. Start the heating system and heat and cure. After heating and curing, start cooling down to 20℃ at 2℃ / h.

[0120] 16. Paint:

[0121] Apply blue paint to the entire steel frame and then cure at room temperature for 5 hours.

[0122] 17. Demoulding:

[0123] Stop the vacuum on the flange and remove it, then lift the finished female mold from the male mold and place it horizontally. After lifting, support the root with a supporting tool.

[0124] 18. Cutting:

[0125] Take the parting surface of the female mold as the reference, measure a 250mm line towards the edge of the flange, and cut the flash based on the line.

[0126] 19. Female mold surface treatment:

[0127] Use 400 mesh, 600 mesh, and 800 mesh water sandpaper to polish the surface. After polishing with the same specification sandpaper, the mold surface must be rinsed with clean water. Use a clean cotton cloth to apply the mold cleaning agent on the surface of the female mold. Apply the mold cleaning agent in a spiral manner on the entire surface of the female mold. If there is oil stains on the surface, replace the new cotton cloth immediately when there is dirt. Apply it 3 times in total, with an interval of 10 minutes each time. Use a clean cotton cloth to apply the sealing agent on the surface of the female mold. Apply the sealing agent in a spiral manner on the entire surface of the female mold. If there is oil stains on the surface, replace the new cotton cloth immediately when there is dirt. Apply it 3 times in total, with an interval of 10 minutes each time. Polish with 1# and 3# polishing agents. Apply the polishing agent first, then sprinkle a little water. Requirements: Use a wool disk, a speed of 800r / min, a total of 3 times, and an interval of 15 minutes each time. After polishing, the outline of the person should be clearly visible. Use a clean cotton cloth to start applying the release agent on the surface of the female mold. When the release agent is soaked through the cotton cloth and stops flowing when you gently pinch it with your hand, apply the release agent in a straight line on the entire surface of the female mold. If there is oil stain or dirt on the surface, immediately replace it with a new cotton cloth. Apply 3 times in total, with an interval of 10 minutes between each application, and apply it to the entire surface without any omissions.

[0128] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A heatable composite material mold, comprising two sets of mold assemblies (1), the two sets of mold assemblies (1) are combined to form a mold cavity, the mold assembly (1) comprising a steel frame (11) and a female mold (12), a copper tube is arranged in the female mold (12), and an adjustment mechanism (13) is arranged between the steel frame (11) and the female mold (12), characterized in that: The regulating mechanism (13) comprises: A support member (131) connected to the female mold (12); An outer cylinder (135) connected to the steel frame (11); An elastic ring (132) connecting the support member (131) and the outer cylinder (135) so that the support member (131) can move horizontally relative to the outer cylinder (135); The elastic ring (132) comprises: The outer ring body (1321) is fixedly connected to the outer cylinder (135); An inner ring body (1323) is rotatably connected to the support member (131); The hollow grooves (1324) are provided between the outer ring body (1321) and the inner ring body (1323), and connecting beams (1322) are formed between adjacent hollow grooves (1324), and the connecting beams (1322) connect the outer ring body (1321) and the inner ring body (1323); The connecting beam (1322) is embedded with a strain gauge; A liftable top plate (133) is disposed in the outer cylinder (135); The top plate (133) comprises: A limit plate (1331) is arranged in the outer cylinder (135) in a liftable manner; A limiting protrusion (1332) is provided on the limiting plate (1331), the limiting protrusion (1332) matches the empty slot (1324), and the limiting protrusion (1332) can be inserted into the empty slot (1324); The regulating mechanism (13) further comprises: A base (138) fixedly connected to the steel frame (11); A connecting seat (137) rotatably disposed on the base (138); The outer cylinder (135) is rotatably disposed on the connecting seat (137), and the outer cylinder (135) can rotate eccentrically relative to the connecting seat (137); The outer cylinder (135) comprises: a cylinder body (1351), the elastic ring (132) is fixedly arranged at the upper end of the cylinder body (1351), and the first connecting hole (1354) is eccentrically opened at the lower end of the cylinder body (1351); The connecting seat (137) comprises: a connecting disk (1371); a connecting tube (1372) eccentrically arranged at the upper end of the connecting disk (1371); the connecting tube (1372) is rotatably connected to the first connecting hole (1354); a second connecting hole (1373) passes through the connecting disk (1371) and the connecting tube (1372); the second connecting hole (1373) is concentrically arranged with the connecting disk (1371); The base (138) comprises: a chassis (1381), the chassis (1381) being fixedly connected to the steel frame (11), a connecting column (1382) being arranged at the upper end of the chassis (1381), and the connecting column (1382) being rotatably connected to the second connecting hole (1373); A liftable pressing plate (136) is disposed inside the outer cylinder (135), and the pressing plate (136) includes a locking plate (1361). The locking plate (1361) can be pressed on the upper ends of the connecting cylinder (1372) and the connecting column (1382) to lock the connecting cylinder (1372) and the connecting column (1382); A top groove (1362) is formed at the upper end of the pressing plate (136), and a bottom groove (1333) is formed at the lower end of the top plate (133); A rotatable rotating ring (134) is disposed inside the outer cylinder (135); The rotating ring (134) comprises: An intermediate ring (1341) is rotatably disposed in the outer cylinder (135); A first protrusion (1342) is arranged on one side of the middle ring (1341) and cooperates with the bottom groove (1333) to drive the top plate (133) to rise and fall; The second protrusion (1343) is arranged on the other side of the middle ring (1341) and cooperates with the top groove (1362) to drive the pressing plate (136) to rise and fall.

2. A heatable composite material mold according to claim 1, characterized in that: A rotating arm (1344) is provided on the outer periphery of the intermediate ring (1341), a side hole (1353) is opened in the cylinder (1351), and the rotating arm (1344) passes through the side hole (1353) and extends to the outside of the outer cylinder (135).

3. A method for manufacturing a heatable composite material mold, based on the heatable composite material mold according to any one of claims 1-2, characterized in that: The steps include: S1. Preparation of positive mold; S2. Inspection of positive mold; S3. Treatment of positive mold; S4. Surface treatment of positive mold; S5. Preparation of gel coat layer; S6. Pasting of surface felt layer; S7. Pasting of chopped felt layer; S8. Making of front layer; S9. Making of thermal conductive putty layer; S10. Installation of copper pipes; S11. Making of insulation layer; S12. Making of back layer; S13. Installation and fixing of steel frame; S14. Making of outer insulation layer; S15. Post-curing; S16. Painting; S17. Demoulding; S18. Cutting; S19. Surface treatment of negative mould.

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