CN110815865B - Vacuum autoclave for producing motorcycle helmet and motorcycle helmet forming process - Google Patents
Vacuum autoclave for producing motorcycle helmet and motorcycle helmet forming process Download PDFInfo
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- CN110815865B CN110815865B CN201910889373.1A CN201910889373A CN110815865B CN 110815865 B CN110815865 B CN 110815865B CN 201910889373 A CN201910889373 A CN 201910889373A CN 110815865 B CN110815865 B CN 110815865B
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000008569 process Effects 0.000 title claims abstract description 10
- 238000007731 hot pressing Methods 0.000 claims abstract description 47
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000000465 moulding Methods 0.000 claims description 17
- 229920001187 thermosetting polymer Polymers 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 11
- 239000002131 composite material Substances 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000005086 pumping Methods 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 8
- 229920000742 Cotton Polymers 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000001029 thermal curing Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000011257 shell material Substances 0.000 description 27
- 230000000694 effects Effects 0.000 description 6
- 238000001723 curing Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2791/00—Shaping characteristics in general
- B29C2791/004—Shaping under special conditions
- B29C2791/006—Using vacuum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/48—Wearing apparel
- B29L2031/4807—Headwear
- B29L2031/4814—Hats
- B29L2031/4821—Helmets
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a vacuum autoclave for producing a motorcycle helmet and a motorcycle helmet forming process, comprising an autoclave body and a forming device, wherein the forming device comprises a vacuum bag, a forming mould arranged in the vacuum bag and a connector connected with the vacuum bag and communicated with the forming mould; one end of the hot pressing tank body is fixedly connected with a sealing piece; a heating device is arranged in the closing part; the other end of the hot-pressing tank body is connected with a tank door; the hot pressing tank body is connected with a vacuumizing device which is communicated with the joint; the outer wall of the hot pressing tank body is sequentially provided with an exhaust device and an air inlet pipe along the length direction; the air inlet pipe is communicated with an air inlet device. The invention can effectively improve the impact resistance of the motorcycle helmet and the product quality. The problem of lower impact strength of motorcycle helmet is solved.
Description
Technical Field
The invention relates to the technical field of helmet production, in particular to a vacuum autoclave for motorcycle helmet production and a motorcycle helmet forming process.
Background
The motorcycle helmet is a necessary safety tool for driving a motorcycle, is used for protecting the head, and is windproof and cold-proof. Now, referring to fig. 8, the equipment for producing the motorcycle helmet comprises an equipment body 6, a heating device 61 arranged in the equipment body, a mold 62 arranged in the equipment body, an air bag 63 for attaching the shell material and an inflating device 64 arranged in the equipment body. When the motorcycle helmet is produced, the air bag 63 pasted with the shell material is placed in the mould 62; the inflator 64 is connected with the mold 62 to form a seal, the inside of the airbag 63 is pressurized to enable the shell material of the outer wall of the airbag to be tightly attached to the inner wall of the mold 62, and the lower shell material is heated by the heating device 61 to be thermoset and molded to prepare the shape of the helmet shell.
The shell materials are attached to the outer wall of the air bag, and gaps exist among the shell materials, so that the resin in the shell materials is changed from a solid state to a liquid state in the thermosetting molding process, small bubbles can appear in the resin, and the quality of the helmet subjected to thermosetting molding can be reduced if the small bubbles are not effectively removed. The small bubbles destroy the internal structure of the composite material, stress accumulation easily occurs at the positions of the small bubbles subjected to impact, so that the internal structure is torn to cause overall cracks, and the impact resistance effect of the helmet is influenced.
Disclosure of Invention
The invention aims to provide a vacuum autoclave for producing a motorcycle helmet, which improves the impact resistance effect.
The method is realized by the following technical scheme: a vacuum autoclave for producing a motorcycle helmet comprises an autoclave body and a forming device, wherein the forming device comprises a vacuum bag, a forming mold arranged in the vacuum bag, and a connector connected with the vacuum bag and communicated with the forming mold; one end of the hot pressing tank body is fixedly connected with a sealing piece; a heating device is arranged in the closing part; the other end of the hot-pressing tank body is connected with a tank door; the hot pressing tank body is connected with a vacuumizing device which is communicated with the joint; the outer wall of the hot pressing tank body is sequentially provided with an exhaust device and an air inlet pipe along the length direction; the air inlet pipe is communicated with an air inlet device.
By adopting the technical scheme, the forming device is placed into the hot-pressing tank body and communicated with the vacuumizing device; air in the vacuum bag is pumped out through a vacuumizing device, and meanwhile, air existing between shell materials attached to the inside of the forming die is pumped out; the heating device is started to heat the interior of the hot-pressing tank body, the air inlet device is started to pressurize the interior of the hot-pressing tank body, a high-temperature and high-pressure internal environment is formed, the quantity of bubbles in the outer shell body is reduced as much as possible during hot curing molding, and the impact resistance of the outer shell body structure is guaranteed. The motorcycle outer shell is formed on the inner wall of the forming die; the joint is communicated with a vacuumizing device to effectively pump out air in the vacuum bag and air between shell materials attached to the inner wall of the forming mold, and the influence on the overall impact resistance due to bubbles in the structure after thermosetting forming is reduced.
The invention is further configured to: the vacuum pumping device comprises a plurality of connecting pipes fixedly connected to the outer wall of the autoclave body, a vacuum pumping pipe communicated with one end of the connecting pipes and positioned in the autoclave body, an air storage tank communicated with the other end of the connecting pipes, a control valve arranged between the connecting pipes and the air storage tank, an air pressure sensor connected to the connecting pipes, and an air pressure display device electrically connected to the air pressure sensor.
By adopting the technical scheme, the production efficiency of the motorcycle helmet is improved by the plurality of connecting pipes; each connecting pipe is independently connected with a forming device, when the vacuum degree in the forming device displays that the real number does not reach the standard in the air pressure display device, the control valve can be closed, the thermosetting of other forming devices is not influenced, the electric energy is saved, the cost is reduced, and the product quality is effectively controlled.
The invention is further configured to: a supporting plate for placing a forming device is arranged at the bottom inside the hot-pressing tank body; the autoclave body is formed with an upper air flow area at an upper portion of the support plate and a lower air flow area at a lower portion of the support plate.
Through adopting above-mentioned technical scheme, form the air inner loop and flow at last air flow district and lower air flow district inner loop promptly, with each position of the heat energy homodisperse in the internal portion of autoclave that heating device improves, realized that forming device is heated evenly, attached shell material mechanical state is unanimous, has guaranteed that the structural hierarchy nature of thermosetting shaping shell body is balanced, has better shock resistance.
The invention is further configured to: the heating device comprises a driving motor, a fan connected to the output shaft of the driving motor through a coupler, an electric heater connected to the air outlet of the fan, and a cooler connected to one side of the electric heater, which is far away from the fan.
By adopting the technical scheme, the electric heater heats the interior of the hot-pressing tank body to improve energy; the fan blows the air that has absorbed the heat energy that electric heater produced to each inside corner of autoclave body and is favorable to accelerating the air flow simultaneously and forms the air convection, guarantees the homogeneity of autoclave body inside temperature. The arrangement of the cooler controls the temperature in the hot-pressing tank body, and the temperature deviates from a set value to start the cooler to be stable; meanwhile, in the hot curing molding process, the cooling rate of the outer shell is influenced by controlling the temperature reduction rate in the hot pressing tank body, and the quality of the helmet is ensured.
The invention is further configured to: a plurality of tank door convex teeth which are uniformly spaced from each other are integrally formed on the tank door along the circumferential direction of the tank door; the inner wall of one side of the hot-pressing tank body close to the tank door is integrally formed with tank body convex teeth which are uniformly spaced; a tank body groove for the tank door convex tooth to pass through is formed between the adjacent tank body convex teeth; the inner wall of the hot-pressing tank body is provided with a tank body ring groove which is positioned at the downstream of the tank body groove and used for rotating and locking the tank door; the tank door is rotationally connected with a tank door supporting device fixedly connected to the outer wall of the hot-pressing tank body; one side of the tank door facing the interior of the autoclave is connected with an air pressure pushing device in a sliding manner; the hot pressing tank body is fixedly connected with a fixing piece for the air pressure pushing device to be slidably penetrated and fixed; the outer wall of the tank door is fixedly connected with a gear block along the circumferential direction; the autoclave body is rotatably connected with a rotating rod meshed with the gear block.
By adopting the technical scheme, the vertical projection of the tank door convex tooth and the vertical projection of the tank body convex tooth of the tank door in the opening state are complete circles, namely the vertical projection of the tank door convex tooth is embedded in the tank body groove to form a vertical projection which is complete circles. Closing the tank door: the tank door is rotated to penetrate through the tank body convex teeth to form the tank body groove to enter the tank body annular groove, the rotating rod is rotated clockwise to enable the tank door to rotate in the tank body annular groove until the vertical projection of the tank door convex teeth and the tank body convex teeth coincide, and the safety of the operation of opening the tank door is guaranteed.
The invention is further configured to: the exhaust device comprises a main exhaust device and a branch exhaust device communicated with the main exhaust device, and the branch exhaust device is provided with a regulating valve; a valve rod of the regulating valve is connected with a control rod which is rotatably connected to the outer wall of the hot-pressing tank body; the tank door is fixedly connected with a limiting block for limiting the movement of the control rod.
By adopting the technical scheme, when the tank door is in an opening state, the control rod rotates back to the outer wall to regulate the opening state of the valve; when the tank door is rotated to penetrate through the convex teeth of the tank body to form the groove of the tank body to enter the annular groove of the tank body, the limiting block moves to one end of the closing piece in a direction of crossing the control rod, the control rod is rotated to be in a closing state of the outer wall adjusting and controlling valve, and the limiting block is abutted to the control rod and limited by the control rod. The tank door is opened, the control rod is necessarily rotated to enable the regulating valve to be in an open state, the air pressure in the hot-pressing tank body is balanced with the external atmospheric pressure when the air in the hot-pressing tank body is exhausted, and the safe opening of the tank door is further guaranteed.
The invention is further configured to: the air pressure pushing device comprises an air pressure pushing rod, and the bottom end of the air pressure pushing rod is fixedly connected with an air pressure pushing plate; one side of the tank door facing the interior of the hot-pressing tank body is fixedly connected with a fixed block; the fixed block is integrally provided with a sliding groove for sliding the air pressure pushing plate; the inner wall of the bottom of the sliding groove is fixedly connected with a limiting ring body for limiting the air pressure pushing plate to be separated from the fixed block; the bottom of the fixed block is provided with an air pressure pushing hole which penetrates through the limiting ring body.
Through adopting above-mentioned technical scheme, along with inside atmospheric pressure rises, the internal air of autoclave promotes hole and atmospheric pressure slurcam through atmospheric pressure, and the atmospheric pressure slurcam receives the effect of the internal atmospheric pressure of autoclave and upwards slides along the sliding tray, and the through-hole that the mounting was worn to establish by the atmospheric pressure catch bar is realized fixing. As long as the internal atmospheric pressure of autoclave body 1 is greater than the state of the through-hole of establishing the mounting then atmospheric pressure catch bar keeps wearing to establish, and jar door 3 can't be opened, has guaranteed the operational safety nature.
The invention also aims to provide a process for forming the motorcycle helmet, which can improve the impact resistance effect.
The purpose is achieved through the following technical scheme: the method comprises the following steps:
step one, preparation operation of a forming device: attaching a composite material and an auxiliary material to the inner wall of the forming mold; then coating high-temperature vacuum guide cotton on the inner and outer surfaces of the forming die;
step two, vacuumizing operation: placing the forming device into the hot-pressing tank body; the joint is communicated with a vacuumizing device; opening the vacuumizing device to start vacuumizing the inside of the forming device;
step three, thermosetting molding: starting a heating device to heat the interior of the hot-pressing tank body; and starting the air inlet device to pressurize the interior of the hot-pressing tank body, so that the interior of the forming die is subjected to positive pressure by the negative pressure and is in a high-temperature environment for thermosetting, and forming the outer shell of the motorcycle helmet.
By adopting the technical scheme, the composite material and the auxiliary material are attached to the inner wall of the forming die, so that the produced helmet has good impact strength; the high-temperature vacuum guide cotton enables the composite material and the auxiliary material on the inner wall of the forming die to be heated uniformly and can better finish thermosetting; the vacuumizing device is used for vacuumizing bubbles in the vacuum bag and the air inlet device is used for pressurizing the interior of the autoclave body, and bubbles generated in the thermosetting molding process of the composite material and the auxiliary material in the vacuum bag are removed, so that the upper limit of the impact resistance strength of the helmet is effectively improved.
In summary, the invention has the following advantages:
1. through autoclave body, forming device, backup pad, heating device, evacuating device and air inlet unit, overcome the inside bubble defect that exists of shell body material after the thermosetting shaping, guarantee the impact strength resistance of product, effectively protect navigating mate's safety.
2. The fault-tolerant rate and the operation safety of the opening and closing operation of the tank door are ensured through the air pressure pushing device, the control rod, the limiting block, the convex teeth of the tank door, the convex teeth of the tank body, the groove of the tank body, the annular groove of the tank body, the fixing part gear block and the rotating rod.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural view of the molding apparatus.
Fig. 3 is a partial cross-sectional view of the present invention.
FIG. 4 is a partial schematic view of the present invention
Fig. 5 is a schematic view of the structure of the tank door.
Fig. 6 is a sectional view of the pneumatic pushing means.
Fig. 7 is a flow chart of the internal circulation of air.
Fig. 8 is a schematic view of a structure of the prior art.
In the figure, 1, a hot-pressing tank body; 10. a molding device; 101. vacuum bag; 102. forming a mold; 103. a joint; 11. a support plate; 12. an upper air flow zone; 13. a lower air flow zone; 14. the convex teeth of the tank body; 15. a tank body groove; 16. a tank ring groove; 17. rotating the rod; 2. a closure; 20. a heating device; 21. a drive motor; 211. a coupling; 22. a fan; 23. an electric heater; 24. a cooler; 3. a tank door; 31. an air pressure pushing device; 311. an air pressure push rod; 312. an air pressure pushing plate; 32. a fixing member; 33. a control lever; 331. a limiting block; 34. a can door lobe; 35. a tank door support means; 36. a gear block; 37. a fixed block; 371. a sliding groove; 372. a confinement ring body; 373. an air pressure push hole; 4. a vacuum pumping device; 41. taking over a pipe; 42. vacuumizing a tube; 43. a gas storage tank; 44. a control valve; 45. an air pressure sensor; 46. an air pressure display device; 5. an air intake device; 50. an exhaust device; 501. a main exhaust device; 502. a branch exhaust device; 503. a regulating valve; 51. an air inlet pipe; 52. a pressure gauge; 53. a safety valve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment is as follows:
referring to fig. 1, the vacuum autoclave for producing the motorcycle helmet disclosed by the invention comprises an autoclave body 1 and a forming device 10, wherein one end of the autoclave body 1 is fixedly connected with a sealing part 2; a heating device 20 (identified in fig. 3) is arranged inside the closure 2; the other end of the hot-pressing tank body 1 is connected with a tank door 3; the hot-pressing tank body 1 is connected with a vacuum extractor 4 which is communicated with a forming device 10; the outer wall of the top of the autoclave body 1 is sequentially provided with an exhaust device 50, a pressure gauge 52, a safety valve 53 and an air inlet pipe 51 along the length direction; the intake pipe 51 communicates with the intake device 5.
Referring to fig. 2 and 3, the molding apparatus 10 includes a vacuum bag 101, preferably a PE bag. A forming mold 102 is arranged in the vacuum bag 101; the vacuum bag 101 is connected with a connection 103 which communicates with the forming tool 102 and which can communicate with the evacuation device 4. The vacuumizing device 4 comprises a plurality of connecting pipes 41 fixedly connected with the outer wall of the autoclave body 1; one end of the connecting pipe 41 is communicated with a vacuum-pumping pipe 42 which is positioned in the autoclave body 1 and can be communicated with the joint 103; the other end of the connecting pipe 41 is communicated with an air storage tank 43. In order to manage and control the vacuum degree of the molding device 10, a control valve 44 is arranged between the connecting pipe 41 and the air storage tank 43; the adapter 41 is connected with an air pressure sensor 45; the air pressure sensor 45 is connected to an air pressure display device 46. The composite material and the auxiliary material are adhered to the inner wall of the forming die 102, the inner surface and the outer surface of the forming die 102 are coated with high-temperature vacuum guide cotton, and the high-temperature vacuum guide cotton is used for uniformly guiding heat in the environment to the shell material adhered to the inner wall of the forming die 102, so that the shell material is heated uniformly and is subjected to thermosetting forming to obtain a high-quality helmet shell. The forming die 102 is placed into the vacuum bag 101, the connector 103 is connected with the vacuumizing tube 42, the control valve 44 is opened, vacuumizing is started, air in the vacuum bag 101 is exhausted, air existing between shell materials attached to the inner wall of the forming die 102 is exhausted, the fact that air bubbles in the shell are few as far as possible in the thermal curing forming process is guaranteed, and the impact resistance of the shell structure is guaranteed. The air pressure sensor 45 tests the vacuum degree in the vacuum bag 101, the vacuum degree is displayed on the air pressure display device, if the displayed vacuum degree does not reach the standard, the helmet manufactured by the forming device 10 is judged to be unqualified, the control valve 44 connected with the forming device 10 is closed, energy consumption is reduced, and cost is saved. The control valve 44 that closes the connection to the molding apparatus 10 has no effect on the other molding apparatuses 10.
Referring to fig. 3, the heating device 20 includes a driving motor 21, a fan 22 connected to an output shaft of the driving motor 21 through a coupling 211, an electric heater 23 connected to an air outlet of the fan 22, and a cooler 24 connected to a side of the electric heater 23 away from the fan. In order to heat the interior of the autoclave body 1 uniformly, a supporting plate 11 for placing a forming device 10 is arranged at the bottom of the autoclave body 1; the autoclave body 1 is formed with an upper air flow region 12 at an upper portion of the support plate 11 and a lower air flow region 13 at a lower portion of the support plate 11. Referring to fig. 7, the blower 22 drives the internal air to flow, so that the heat generated by the electric heater 23 is more rapidly and uniformly transferred to the inside of the autoclave body 1, thereby ensuring the stability of the curing temperature. The air inlet device 5 pressurizes the interior of the autoclave body 1 through the air inlet pipe 51, the pressure at the pipe orifice of the air inlet pipe 51 is higher, convection is formed from the high pressure part to the low pressure part, the air inlet pipe 51 and the low pressure part form internal circulation together in the autoclave body 1, a thermocuring molding environment with high temperature, high pressure and air convection is formed, the uniform heating of the molding die 102 and the same thermodynamic state between the composite material and the auxiliary material are ensured, and the uniformity and stability of the obtained helmet structure are ensured; and the composite material and the auxiliary material of the forming mold 102 are more tightly attached to the inner wall of the forming mold 102 under the action of internal positive pressure, and small bubbles generated by the conversion of the shell material from a solid state to a liquid state due to heating are pumped out of the vacuum bag 101 through the vacuum pumping device 4, so that the impact resistance of the material is further ensured.
Triple setting of jar door 3 switch:
referring to fig. 4 and 5, the first reset: the tank door 3 is integrally formed with a plurality of tank door convex teeth 34 which are evenly spaced from each other along the circumferential direction; the inner wall of the hot-pressing tank body 1 close to the tank door 3 is integrally formed with tank body convex teeth 14 which are uniformly spaced; a tank groove 15 for the tank door convex tooth 34 to pass through is formed between the adjacent tank convex teeth 14; a tank ring groove 16 which is positioned at the downstream of the tank groove 15 and used for rotating and locking the tank door 3 is formed on the inner wall of the hot-pressing tank body 1; the tank door 3 is rotatably connected with a tank door supporting device 35 fixedly connected to the outer wall of the autoclave body 1; the outer wall of the tank door 3 is fixedly connected with a gear block 36 along the circumferential direction; the autoclave body 1 is rotatably connected with a rotating rod 17 engaged with a gear block 36. The vertical projection of the tank door convex tooth 34 and the tank body convex tooth 14 of the tank door 3 in the opened state is in a complete circle shape, namely the vertical projection of the tank door convex tooth 34 is embedded in the tank body groove 15 to form a vertical projection in a complete circle shape. Closing the tank door 3: the tank door 3 is rotated to enable the tank body convex teeth 14 to penetrate through the tank body groove 15 to enter the tank body ring groove 16, and the rotating rod 17 is rotated clockwise to enable the tank door 3 to rotate in the tank body ring groove 16 until the vertical projection of the tank door convex teeth 34 is coincident with the vertical projection of the tank body convex teeth 14.
Referring to fig. 4 and 5, the second reset: referring to fig. 1, the exhaust device 50 includes a main exhaust device 501 and a branch exhaust device 502 communicated with the main exhaust device 501, and the branch exhaust device 502 is provided with a regulating valve 503; a valve rod of the regulating valve 503 is connected with a control rod 33 which is rotatably connected with the outer wall of the autoclave body 1; the tank door 3 is fixedly connected with a restricting block 331 that restricts the movement of the control lever 33. When the tank door 3 is in an open state, the control rod 33 rotates back to the outer wall to regulate the opening state of the valve 503; when the tank door 3 is rotated to enable the tank body convex teeth 14 to penetrate through the tank body groove 15 and enter the tank body annular groove 16, the limiting block 331 moves to one end facing the closing piece 2 beyond the control rod 33, the control rod 33 is rotated to be in a closed state of the outer wall fitting regulating valve 503, and at the moment, the limiting block 331 is abutted to the control rod 33 and is limited by the control rod 33. The tank door 3 is opened, the control rod 33 is necessarily rotated to enable the regulating valve 503 to be in an opening state, so that the air in the autoclave body 1 is exhausted, namely the air pressure in the autoclave body 1 is balanced with the external atmospheric pressure, and the safe opening of the tank door 3 is ensured.
Referring to fig. 6, the third setup: one side of the tank door 3 facing the interior of the autoclave body 1 is connected with an air pressure pushing device 31 in a sliding way; the autoclave body 1 is fixedly connected with a fixing part 32 for the air pressure pushing device 31 to slide and penetrate through and fix. The air pressure pushing device 31 comprises an air pressure pushing rod 311, and an air pressure pushing plate 312 is fixedly connected to the bottom end of the air pressure pushing rod 311; one side of the tank door 3 facing the interior of the autoclave body 1 is fixedly connected with a fixed block 37; the fixed block 37 is integrally provided with a sliding groove 371 for the air pressure pushing plate 312 to slide; the inner wall of the bottom of the sliding groove 371 is fixedly connected with a limiting ring body 372 which limits the air pressure pushing plate 312 to be separated from the fixed block 37; the bottom of the fixing block 37 is formed with an air pressure pushing hole 373 penetrating the inside of the limiting ring body 372. After the second reset closes jar door 3 operation, along with inside atmospheric pressure rises, the inside air of autoclave body 1 passes through atmospheric pressure and promotes hole 373 and atmospheric pressure pushing plate 312, and atmospheric pressure pushing plate 312 receives the inside atmospheric pressure effect of autoclave body 1 and upwards slides along sliding tray 371, and atmospheric pressure pushing rod 311 wears to establish the through-hole of mounting 32 and realizes fixing. As long as the internal air pressure of the autoclave body 1 is greater than the external atmospheric pressure, the air pressure push rod 311 keeps the state of penetrating the through hole of the fixing part 32, the tank door 3 cannot be opened, and the operation safety is ensured.
Example two:
step one, preparation operation of the molding device 10: attaching the composite material and the auxiliary material to the inner wall of the forming mold 102; then, high-temperature vacuum guide cotton is coated on the inner surface and the outer surface of the forming mold 102 and is filled into the vacuum bag 101.
Step two, vacuumizing operation: firstly, the forming device 10 is placed into the autoclave body 1, and the gas storage tank 43 is confirmed to be in a normal working state; then the joint 103 is communicated with the evacuation tube 42; and finally, opening the control valve 44 to start vacuumizing, finally observing the readings of the air pressure display device 46, closing the corresponding control valve 44 if the readings of the vacuum degree are abnormal, and judging that the quality of the outer shell in the forming die 102 does not reach the standard.
Step three, thermosetting molding: starting the electric heater 23 and simultaneously starting the driving motor 21 to drive the fan 22 to rotate, quickly transmitting the energy generated by the electric heater 23 into the autoclave body 1, and heating the interior of the autoclave body 1; and (3) starting the air inlet device 5 to pressurize the interior of the autoclave body 1, so that the interior of the forming die 102 is subjected to positive pressure by negative pressure and is subjected to heat curing in a high-temperature environment, and finally cooling and forming are carried out to obtain the high-quality motorcycle helmet outer shell.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (5)
1. A vacuum autoclave for motorcycle helmet production, its characterized in that: the hot-pressing forming device comprises a hot-pressing tank body (1) and a forming device (10), wherein the forming device (10) comprises a vacuum bag (101), a forming mold (102) arranged in the vacuum bag (101), and a connector (103) connected to the vacuum bag (101) and communicated with the forming mold (102); one end of the hot pressing tank body (1) is fixedly connected with a sealing piece (2); a heating device (20) is arranged in the closing part (2); the other end of the hot-pressing tank body (1) is connected with a tank door (3); the hot pressing tank body (1) is connected with a vacuum pumping device (4) which is used for being communicated with the joint (103); an exhaust device (50) and an air inlet pipe (51) are arranged on the outer wall of the hot pressing tank body (1); the air inlet pipe (51) is communicated with an air inlet device (5); a plurality of can door convex teeth (34) which are uniformly spaced from each other are integrally formed on the can door (3) along the circumferential direction; the inner wall of one side of the hot-pressing tank body (1) close to the tank door (3) is integrally formed with tank body convex teeth (14) which are uniformly spaced; a tank body groove (15) for the tank door convex tooth (34) to pass through is formed between the adjacent tank body convex teeth (14); the inner wall of the hot-pressing tank body (1) is provided with a tank body ring groove (16) which is positioned at the downstream of the tank body groove (15) and is used for rotating and locking the tank door (3); the tank door (3) is rotatably connected with a tank door supporting device (35) fixedly connected to the outer wall of the hot-pressing tank body (1); one side of the tank door (3) facing the interior of the autoclave body (1) is connected with an air pressure pushing device (31) in a sliding way; the hot pressing tank body (1) is fixedly connected with a fixing piece (32) for the air pressure pushing device (31) to be penetrated and fixed in a sliding way; the outer wall of the tank door (3) is fixedly connected with a gear block (36) along the circumferential direction; the hot pressing tank body (1) is rotatably connected with a rotating rod (17) meshed with the gear block (36); the exhaust device (50) comprises a main exhaust device (501) and a branch exhaust device (502) communicated with the main exhaust device (501), and the branch exhaust device (502) is provided with a regulating valve (503); a valve rod of the regulating valve (503) is connected with a control rod (33) which is rotatably connected with the outer wall of the hot-pressing tank body (1); the tank door (3) is fixedly connected with a limiting block (331) for limiting the movement of the control rod (33); the air pressure pushing device (31) comprises an air pressure pushing rod (311), and the bottom end of the air pressure pushing rod (311) is fixedly connected with an air pressure pushing plate (312); one side of the tank door (3) facing the interior of the hot-pressing tank body (1) is fixedly connected with a fixed block (37); the fixed block (37) is integrally provided with a sliding groove (371) for the air pressure pushing plate (312) to slide; the inner wall of the bottom of the sliding groove (371) is fixedly connected with a limiting ring body (372) which limits the air pressure pushing plate (312) to be separated from the fixed block (37); an air pressure pushing hole (373) penetrating through the limiting ring body (372) is formed at the bottom of the fixing block (37).
2. A vacuum autoclave for the production of motorcycle helmets according to claim 1, wherein: the vacuum pumping device (4) comprises a plurality of connecting pipes (41) fixedly connected to the outer wall of the autoclave body (1), a vacuum pumping pipe (42) communicated with one end of the connecting pipes (41) and positioned in the autoclave body (1), an air storage tank (43) communicated with the other end of the connecting pipes (41), a control valve (44) arranged between the connecting pipes (41) and the air storage tank (43), an air pressure sensor (45) connected to the connecting pipes (41), and an air pressure display device (46) electrically connected to the air pressure sensor (45).
3. A vacuum autoclave for the production of motorcycle helmets according to claim 1, wherein: a supporting plate (11) for placing a forming device (10) is arranged at the bottom inside the hot-pressing tank body (1); the autoclave body (1) is formed with an upper air flow area (12) located at the upper portion of the support plate (11) and a lower air flow area (13) located at the lower support plate (11).
4. A vacuum autoclave for the production of motorcycle helmets according to claim 1, wherein: the heating device (20) comprises a driving motor (21), a fan (22) connected to an output shaft of the driving motor (21) through a coupler (211), an electric heater (23) connected to an air outlet of the fan (22), and a cooler (24) connected to one side, far away from the fan, of the electric heater (23).
5. A process for forming a motorcycle helmet using a vacuum autoclave for motorcycle helmet production as claimed in any one of claims 1 to 4, characterized in that: the method comprises the following steps:
step one, preparation operation of a forming device (10): attaching a composite material and an auxiliary material to the inner wall of a forming die (102); then coating high-temperature vacuum guide cotton on the inner surface and the outer surface of the forming die (102);
step two, vacuumizing operation: placing the forming device (10) into the hot-pressing tank body (1); the joint (103) is communicated with the vacuumizing device (4); opening the vacuumizing device (4) to start vacuumizing the inside of the forming device (10);
step three, thermosetting molding: starting a heating device (20) to heat the interior of the hot-pressing tank body (1); and (3) starting the air inlet device (5) to pressurize the interior of the autoclave body (1), so that the interior of the forming die (102) is subjected to negative pressure and the exterior is subjected to positive pressure and is subjected to thermocuring in a high-temperature environment, and the outer shell of the motorcycle helmet is formed.
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| CN201910889373.1A CN110815865B (en) | 2019-09-19 | 2019-09-19 | Vacuum autoclave for producing motorcycle helmet and motorcycle helmet forming process |
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| CN201910889373.1A CN110815865B (en) | 2019-09-19 | 2019-09-19 | Vacuum autoclave for producing motorcycle helmet and motorcycle helmet forming process |
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| CN110815865A CN110815865A (en) | 2020-02-21 |
| CN110815865B true CN110815865B (en) | 2021-07-23 |
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| CN113442346B (en) * | 2021-06-09 | 2022-03-25 | 淮阴工学院 | Hot curing tyre forming machine |
| CN115284642B (en) * | 2022-08-02 | 2024-10-29 | 安徽泰乐玛科技有限公司 | Sectional type autoclave forming device of high-speed maglev train radome fairing |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208343496U (en) * | 2018-05-18 | 2019-01-08 | 诸城市鲁贯通机械科技有限公司 | A kind of industrial autoclave |
| CN208714529U (en) * | 2018-07-25 | 2019-04-09 | 西南交通大学 | A device for eliminating residual stress of composite materials and controlling curing deformation |
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2019
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208343496U (en) * | 2018-05-18 | 2019-01-08 | 诸城市鲁贯通机械科技有限公司 | A kind of industrial autoclave |
| CN208714529U (en) * | 2018-07-25 | 2019-04-09 | 西南交通大学 | A device for eliminating residual stress of composite materials and controlling curing deformation |
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Effective date of registration: 20210610 Address after: No. 22, Xingye Avenue, economic development zone, Yangxin County, Huangshi City, Hubei Province 435200 Applicant after: Hubei aichion sports supplies Co.,Ltd. Address before: 314107 workshop 4, 156 Tingyao East Road, ganyao Town, Jiashan County, Jiaxing City, Zhejiang Province Applicant before: ZHEJIANG AEGIS SPORTS GOODS Co.,Ltd. |
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Denomination of invention: Vacuum autoclave for motorcycle helmet production and motorcycle helmet forming process Effective date of registration: 20220328 Granted publication date: 20210723 Pledgee: Yangxin County SME Financing Guarantee Co.,Ltd. Pledgor: Hubei aichion sports supplies Co.,Ltd. Registration number: Y2022980003386 |
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Date of cancellation: 20230612 Granted publication date: 20210723 Pledgee: Yangxin County SME Financing Guarantee Co.,Ltd. Pledgor: Hubei aichion sports supplies Co.,Ltd. Registration number: Y2022980003386 |
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Denomination of invention: Vacuum hot pressing tank and motorcycle helmet forming process for motorcycle helmet production Effective date of registration: 20230615 Granted publication date: 20210723 Pledgee: Hubei Science and Technology Financing Guarantee Co.,Ltd. Pledgor: Hubei aichion sports supplies Co.,Ltd. Registration number: Y2023980043971 |
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Granted publication date: 20210723 Pledgee: Hubei Science and Technology Financing Guarantee Co.,Ltd. Pledgor: Hubei aichion sports supplies Co.,Ltd. Registration number: Y2023980043971 |
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Denomination of invention: Vacuum hot press can and motorcycle helmet forming process for motorcycle helmet production Granted publication date: 20210723 Pledgee: Hubei Science and Technology Financing Guarantee Co.,Ltd. Pledgor: Hubei aichion sports supplies Co.,Ltd. Registration number: Y2024980031847 |
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