CN110682554A - Vacuumizing helmet shell forming equipment and forming process using equipment - Google Patents
Vacuumizing helmet shell forming equipment and forming process using equipment Download PDFInfo
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- CN110682554A CN110682554A CN201910876574.8A CN201910876574A CN110682554A CN 110682554 A CN110682554 A CN 110682554A CN 201910876574 A CN201910876574 A CN 201910876574A CN 110682554 A CN110682554 A CN 110682554A
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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
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/342—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using isostatic pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/10—Moulds or cores; Details thereof or accessories therefor with incorporated venting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- 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
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
The invention discloses a vacuumizing helmet shell forming device and a forming process utilizing the device, and the device comprises a rack, a fixed die fixedly connected to the rack, a movable die which is opposite to the fixed die and is connected to the rack in a sliding manner, and a forming cavity is formed between the fixed die and the fixed die, a forming air bag arranged in the forming cavity, a pressurizing device used for sealing the edge of the forming air bag and the forming cavity and inflating the inside of the forming air bag, and a heating device connected to the movable die and the fixed die, wherein the movable die and/or the fixed die are/is provided with an air exhaust opening communicated with the forming cavity, the fixed die and the movable die are connected in a sealing manner, and the air exhaust opening. The method comprises the following steps of S1: pre-dipping; step S2: cutting; step S3: sticking cloth; step S4: molding; step S5: and (6) cooling. The invention provides a vacuumizing helmet shell forming device capable of improving the forming quality of a helmet shell and a forming process using the device.
Description
Technical Field
The invention relates to the field of helmet production, in particular to vacuumizing helmet shell forming equipment.
Background
A motorcycle helmet is a head protection device for a motorcycle rider, the main purpose of which is to protect the rider's head in the event of an impact, preventing or mitigating injuries or even saving the rider's life.
The general motorcycle helmet shell is formed by overlapping and laminating multiple layers of glass fiber, nylon reinforced net and other materials, and the common forming equipment comprises two opposite forming dies, an air bag for composite materials and a pressurizing device which seals an air bag opening and is used for inflating and pressurizing inwards, so that the surface of the air bag is expanded and deformed towards the forming dies by the pressure of air in the air bag, the materials on the surface of the air bag can be attached to the surface of the forming dies, and the multiple layers of materials are combined together under the action of high-temperature heating.
The existing equipment is characterized in that the shell is formed by expanding the air bag by the gas in the air bag in the forming process, but if the surface of the helmet shell has various structures, the existing equipment is difficult to enable the material on the outer surface of the air bag to cling to the surface of a mould and form a structure meeting the requirements only by pushing the helmet shell by the internal air pressure.
Disclosure of Invention
The invention aims to provide vacuumizing helmet shell forming equipment which can improve the forming quality of a helmet shell.
The technical purpose of the invention is realized by the following technical scheme: the utility model provides an evacuation helmet casing former, includes frame, fixed connection in the cover half of frame, with cover half opposition and sliding connection in the frame and with the cover half between form the movable mould in molding chamber, arrange the shaping gasbag in the molding chamber in, be used for making between shaping gasbag edge and the molding chamber be sealed and to the interior gas filled pressure device of shaping gasbag, connect in the heating device of movable mould and cover half, the extraction opening that communicates in the molding chamber is seted up to movable mould and/or cover half, sealing connection between cover half and the movable mould, the extraction opening is connected with evacuation mechanism.
Through adopting above-mentioned technical scheme, rely on evacuation mechanism to take away the air between shaping gasbag and the movable mould cover half, the material that makes shaping gasbag surface subsides cover can hug closely in the inner wall surface of movable mould and cover half, heat movable mould and cover half in step, make the resin on shaping gasbag surface take place the melting, then play the adhesion effect of bonding, combine pressure device to aerify shaping gasbag inside, further make the material on shaping gasbag surface can hug closely in the internal surface in the shaping process in shaping chamber, thereby make fashioned structure more complete, and accord with required quality demand, avoid reducing the final quality of product because shaping gasbag surface and shaping intracavity internal face are not laminated completely.
The invention is further configured to: the pressurizing device comprises a pressurizing plate which is abutted to the edge of the forming air bag and enables the edge of the forming air bag and the movable die fixed die to be sealed towards one side of the pressurizing device, an air inlet hole which is formed in the pressurizing plate and communicated with the inside of the forming air bag, and an air inlet device which is communicated with the air inlet hole.
Through adopting above-mentioned technical scheme, utilize the increased pressure board can play sealed effect to the edge of shaping gasbag and cover half movable mould surface, keep being sealed this moment between movable mould and the cover half, then be convenient for carry out the evacuation processing to the space between shaping gasbag and the shaping chamber, also be convenient for aerify to shaping gasbag inside and can not take place to leak, make shaping gasbag surface can keep hugging closely with the inner wall of shaping chamber.
The invention is further configured to: the end faces of the fixed die and the movable die, which are opposite, are parallel, and the end face of one side, which is opposite, of the fixed die or the movable die is embedded with a sealing ring protruding out of the end face.
Through adopting above-mentioned technical scheme, when being close to cover half and movable mould in opposite directions, can rely on the sealing washer to make and keep sealed between cover half and the movable mould, then be convenient for carry out the evacuation processing to the gas among shaping gasbag and the shaping chamber, avoid influencing the evacuation operation because of leaking gas.
The invention is further configured to: the extraction opening includes the cavity of bleeding of seting up in movable mould and the relative side end face of cover half, seting up in cover half and movable mould and intercommunication cavity of bleeding and the runner of bleeding of one side end face, evacuation mechanism is including the exhaust tube that communicates in the cavity of bleeding, communicate in the vacuum pump of exhaust tube.
Through adopting above-mentioned technical scheme, utilize the vacuum pump to provide power, can play the effect of bleeding to the space between shaping chamber and the shaping gasbag through the runner of bleeding, the cavity of bleeding can be linked together when movable mould and cover half are laminated mutually, reaches better effect of bleeding.
The invention is further configured to: the heating device comprises a fixed heating plate connected with the fixed die and a movable heating plate connected with the movable die.
Through adopting above-mentioned technical scheme, rely on the fixed hot plate and the movable heating board can play the heating effect to cover mould and movable mould respectively to can be with heat transfer to shaping intracavity, thereby can make the resin that covers on shaping gasbag surface be the melting and play good bonding effect, and utilize the fixed hot plate and the movable heating board of whole piece to make cover mould and movable mould be heated evenly, reach good heating effect.
The invention is further configured to: the cover half can be dismantled with the fixed heating board and be connected, the movable mould can be dismantled with the movable heating board and be connected.
By adopting the technical scheme, different fixed dies and movable dies can be replaced according to actual production requirements, and the adaptable production range is expanded.
The invention is further configured to: the frame slides along the direction towards or keep away from the cover half and is connected with the movable plate, movable heating board fixed connection is in the movable plate.
Through adopting above-mentioned technical scheme, make the movable plate can move along certain direction at the removal in-process, then can ensure to keep sealed when the laminating between movable mould and the cover half to be convenient for carry out the evacuation, also can ensure the fashioned shape and the structure of final, promote the quality of final product.
Another object of the present invention is to provide a process for forming a helmet shell using the forming apparatus of the above technical solution, comprising the following steps:
step S1: pre-dipping, namely pre-dipping resin in the original material of the helmet shell, and enabling the resin to be in a semi-cured state;
step S2: cutting, namely cutting the material presoaked with the resin in the step S1 into different sheet-shaped materials;
step S3: sticking cloth, namely sticking the cut material in the step S2 on the surface of the formed air bag and fully spreading the material;
step S4: molding, namely placing the molding air bag in the step S3 into a molding cavity between a movable mold and a fixed mold, sealing the edge of the molding air bag and the molding cavity by using a pressurizing device, inflating the molding air bag by using the pressurizing device, vacuumizing the molding cavity by using a vacuumizing mechanism, and synchronously heating and heating the movable mold and the fixed mold;
step S5: and (5) cooling, naturally cooling the movable mold and the fixed mold in the step S4, and demolding the helmet from the molding cavity.
Through adopting above-mentioned technical scheme, carry out preimpregnation resin with helmet shell material to make the resin be the semi-solid state, then can keep the clean and tidy of material at the rubberizing in-process, avoid because the resin that flows can drip ground or bond to operating personnel's clothing on, because generally can include glass fiber material among the helmet shell material, and this material can have some tiny fibre, rely on preimpregnation resin can all consolidate these tiny fibre together, thereby avoid these tiny fibre can enter into people's health and influence staff's health. Meanwhile, the outer wall of the forming air bag can be attached to the inner wall of the forming cavity as much as possible by means of vacuumizing outside the forming air bag and inflating inside the forming air bag, so that better helmet shape and structure can be formed, and the quality of a helmet shell is improved.
In conclusion, the invention has the following beneficial effects: the shell material on the outer wall surface of the forming air bag can be attached to the inner wall surface of the forming cavity by combining the steps of vacuumizing and pressurizing, and the shell can be softened and the resin can be melted by combining the heating device, so that the material on the surface of the forming air bag can be tightly attached to the inner walls of the movable die and the fixed die, the forming quality of the shell is improved, and the stability of structure forming is kept.
Drawings
FIG. 1 is a schematic structural diagram of the present embodiment;
FIG. 2 is a schematic structural diagram of the present embodiment, which is mainly used for embodying the molding cavity and the pressurizing device;
fig. 3 is an enlarged view of a portion I of fig. 2.
Reference numerals: 1. a frame; 11. a frame body; 12. a guide post; 2. fixing a mold; 3. moving the mold; 4. forming an air bag; 41. a molding cavity; 411. a semi-forming cavity; 5. a pressurizing device; 51. a pressurizing plate; 52. an air inlet; 54. a lift cylinder; 6. a heating device; 61. fixing a heating plate; 62. a movable heating plate; 7. an air extraction opening; 71. an air exhaust cavity; 72. an air exhaust flow channel; 8. a vacuum pumping mechanism; 81. an air exhaust pipe; 9. a seal ring; 10. moving the plate; 13. and (7) fixing the plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment is as follows:
a vacuumizing helmet shell forming device is disclosed, referring to fig. 1, comprising a frame 1, a fixed die 2 is fixedly connected on the frame 1, a movable die 3 opposite to the fixed die 2 is connected on the frame 1 in a sliding way, a forming cavity 41 is formed by the movable die 3 and the fixed die 2 after die assembly, a flexible forming air bag 4 is arranged in the forming cavity 41, the forming air bag 4 is made of silica gel material, the outer wall of the forming air bag 4 is integrally formed with a structure required to be formed by the helmet shell, the raw material of the helmet shell is adhered on the outer wall surface of the forming air bag 4 through resin before forming, the forming air bag 4 adhered with the raw material of the shell is placed in the forming cavity 41, a pressurizing device 5 and a heating device 6 are also arranged on the frame 1, the edge of the forming air bag 4 and the surface of the fixed die 3 are kept sealed by the pressurizing device 5, the vacuumizing mechanism 8 is used for vacuumizing between the outer wall of, the pressurizing device 5 inflates the inside of the forming air bag 4 synchronously, so that the outer wall of the forming air bag 4 is kept close to the inner wall of the forming cavity 41, the fixed die 2 and the movable die 3 are heated by the heating device 6, the raw material attached to the surface of the forming air bag 4 can be softened, the resin adhesive is melted, the part of the raw material can be closely attached to the inner wall of the forming cavity 41, and the forming quality of the final helmet shell is improved.
Referring to fig. 2, the frame 1 includes a frame body 11, connect in four guide pillars 12 of frame body 11, four guide pillars 12 all are level and center line and are the rectangle, one end fixedly connected with one of guide pillars 12 is a fixed plate 13 of vertical setting, cover half 2 sets up in fixed plate 13 side surface, and sliding connection has a movable plate 10 that is vertical setting and is parallel with fixed plate 13 on guide pillar 12, set up movable mould 3 in movable plate 10 towards fixed plate 13 side surface, in order to carry out the compound die with movable mould 3 and cover half 2, be fixed with cylinder or hydro-cylinder (not marked in the figure) in frame body 11, the piston rod of cylinder or hydro-cylinder is connected in movable plate 10 and deviates from fixed plate 13 side surface, the piston rod that is pushed movable mould 3 by cylinder or hydro-cylinder and is moved towards cover half.
Half-forming cavities 411 are formed in one opposite sides of the fixed die 2 and the movable die 3, the half-forming cavities 411 penetrate through one opposite side end faces of the fixed die 2 and the movable die 3 and penetrate through the upper end faces of the movable die 3 and the fixed die 2, a groove 15 used for embedding a flanging of a forming air bag 4 is formed in the upper end faces of the fixed die 2 and the movable die 3 downwards around the edge of the half-forming cavity 411, when the fixed die 2 and the movable die 3 are closed, the two half-forming cavities 411 form a forming cavity 41, in order to enable the fixed die 2 and the movable die 3 to be sealed, a sealing groove 14 along the edge of the forming cavity 41 is formed in one side face of the movable die 3 facing the fixed die 2, and a sealing ring 9 is embedded in the sealing groove 14, so that when the air cylinder or the oil cylinder pushes the movable die 3 to move towards one side of the fixed die.
In order to seal the edge of the molding air bag 4 and the upper end surface of the fixed mold 2 of the movable mold 3, the pressurizing device 5 comprises a lifting oil cylinder 54 fixed on the frame 1, a piston rod of the lifting oil cylinder 54 is vertically downward, the end part of the piston rod is fixedly connected with a pressurizing plate 51 parallel to the upper end surface of the fixed mold 2 of the movable mold 3, when the lifting cylinder 54 pushes the pressurizing plate 51 to move downwards, the edge of the molding air bag 4 can be kept sealed with the upper end surface of the movable mold 3 of the fixed mold 2, and simultaneously, in order to inflate the inside of the molding air bag 4, a plurality of air inlet holes 52 penetrating through the bottom end surface and the side wall of the pressurizing plate 51 are formed in the pressurizing plate 51, each air inlet hole 52 is communicated with an air inlet device (not shown in the figure), each air inlet device comprises an air inlet pipe (not shown in the figure) communicated with each air inlet hole 52, and all the air inlet pipes are communicated with an air compressor, so that air can be filled into the molded air bag 4 by the air compressor.
Referring to fig. 2 and 3, in order to simultaneously enable a vacuum to be drawn between the outer wall of the shaping bladder 4 and the inner wall of the shaping chamber 41, the fixed die 2 and the movable die 3 are both provided with air extraction openings 7, the air extraction openings 7 comprise air extraction cavities 71 which are arranged on the end surface of one side of the fixed die 2 and the movable die 3 which are opposite and are positioned on two sides of the molding cavity 41, after the movable die 3 and the fixed die 2 are closed, the two opposite air extraction cavities 71 can be aligned and communicated, inside all seted up on movable mould 3 and cover half 2 and communicate in the inside runner 72 of bleeding of air-extracting cavity 71 and shaping chamber 41, evacuation mechanism 8 communicates in air-extracting cavity 71, and evacuation mechanism 8 is including communicating in air-extracting cavity 71 and connecting in the exhaust tube 81 of movable mould 3 and cover half 2 lateral wall, and exhaust tube 81 communicates has the vacuum pump (not marking in the figure), utilizes the vacuum pump can carry out evacuation processing between shaping gasbag 4 outer wall and the shaping chamber 41 inner wall.
The raw material of the helmet shell is attached to the outer wall of the forming air bag 4, the forming air bag 4 is firstly arranged in the half-forming cavity 411 of the fixed die 2, the movable die 3 is pushed to move towards the fixed die 2, the opposite side end faces of the movable die 3 and the fixed die 2 are kept in sealing contact, the pressurizing plate 51 is contacted with the edge flanging of the forming air bag 4 through the lifting oil cylinder 54, and the flanging of the forming air bag 4 is kept in sealing contact with the grooves 15 on the upper end faces of the fixed die 2 and the movable die 3. Then, the movable mold 3 and the fixed mold 2 are heated by the movable heating plate 62 and the fixed heating plate 61, respectively, to soften the raw material of the outer wall of the molded airbag 4, simultaneously melting the resin, synchronously vacuumizing the gas between the outer wall of the molding air bag 4 and the molding cavity 41 by using a vacuumizing mechanism 8, and the air compressor is used for inflating the inside of the molding air bag 4, so that the volume of the molding air bag 4 is increased, the outer wall of the molding air bag 4 can be tightly attached to the inner wall of the molding cavity 41, the helmet shell material can mold the structures and the shapes of the inner walls of the movable mold 3 and the fixed mold 2, then the power supply of the electric heating wires in the fixed heating plate 61 and the movable heating plate 62 is cut off, so that the movable mold 3 and the fixed mold 2 are gradually cooled, the resin is gradually solidified, the helmet shell material is gradually formed, and finally the movable mold 3 and the fixed mold 2 are separated, so that the helmet shell can be taken out from the forming cavity 41.
Example two:
a forming process of a helmet shell comprises the following steps:
step S1: presoaking, namely presoaking resin in the original material of the helmet shell, wherein the original material comprises a glass fiber net or nylon reinforced mesh cloth and Kevlar fiber carbon fiber mixed woven cloth which are sequentially overlapped, impregnating different original materials with the resin, and semi-curing the resin at natural room temperature, so that the original material has certain viscosity, storing the resin-presoaked original material in an environment of 5-8 ℃ at room temperature before use, wherein the resin for presoaking comprises liquid resin, a curing agent and an accelerating agent, so that the original material can be bonded with the resin in the semi-cured state, the resin cannot drip, and the resin has viscosity, and is convenient to be pasted during production;
step S2: cutting, namely cutting the raw material presoaked with the resin in the step S1 into different sheet materials, selecting different materials and selecting different shapes according to different helmet requirements, and preferably adopting a triangular shape;
step S3: sticking cloth, namely sticking the cut material in the step S2 on the surface of the forming air bag 4 and fully spreading the material, firstly, paving a layer of glass fiber net, and then, selecting and sticking nylon reinforced mesh cloth or Kevlar fiber carbon fiber mixed woven cloth according to actual requirements;
step S4: molding, namely placing the molding airbag 4 in the step S3 into the molding cavity 41 between the movable mold 3 and the fixed mold 2, closing the movable mold 3 and the fixed mold 2, heating the movable mold 3 and the fixed mold 2 to gradually raise the temperature of the movable mold 3 and the fixed mold 2 to 120 ℃, synchronously sealing the edge of the molding airbag 4 and the molding cavity 41 by using a pressure plate 51 in a pressure device 5, inflating the molding airbag 4 by using an air compressor outside the pressure device 5, vacuumizing the molding cavity 41 by using a vacuumizing mechanism 8, and continuously inflating the molding airbag 4 to ensure that the surface of the molding airbag 4 is kept attached to the inner wall of the molding cavity 41, thereby molding the required structure and shape;
step S5: cooling, after the duration of step S4 for 10 minutes, the movable mold 3 and the fixed mold 2 are gradually cooled while keeping the vacuum in the molding cavity 41 and the filling of the molding bladder 4 with gas, and after the duration of 5 minutes, the pressing plate 51 is opened and the vacuum pumping is stopped, the movable mold 3 and the fixed mold 2 are separated, the molded helmet is released from the molding cavity 41, and the helmet is removed from the surface of the molding bladder 4.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (8)
1. The utility model provides an evacuation helmet casing former, including frame (1), fixed connection is in cover half (2) of frame (1), with cover half (2) opposition and sliding connection in frame (1) and with cover half (2) between form movable mould (3) of one-tenth die cavity (41), arrange shaping gasbag (4) in one-tenth die cavity (41) in, be used for making between shaping gasbag (4) edge and one-tenth die cavity (41) sealed and to inflatable pressure device (5) in shaping gasbag (4), connect in heating device (6) of movable mould (3) and cover half (2), characterized by: the vacuum forming device is characterized in that the movable die (3) and/or the fixed die (2) are/is provided with an air pumping hole (7) communicated with the forming cavity (41), the fixed die (2) and the movable die (3) are connected in a sealing manner, and the air pumping hole (7) is connected with a vacuum pumping mechanism (8).
2. The evacuated helmet shell forming apparatus of claim 1, wherein: the pressurizing device (5) comprises a pressurizing plate (51) which is abutted to the edge of the forming air bag (4) and enables the edge of the forming air bag (4) and the fixed die (2) of the movable die (3) to be sealed towards one side of the pressurizing device (5), an air inlet hole (52) which is arranged on the pressurizing plate (51) and communicated with the inside of the forming air bag (4), and an air inlet device communicated with the air inlet hole (52).
3. The evacuated helmet shell forming apparatus of claim 1, wherein: the fixed die (2) and the movable die (3) are parallel, and a sealing ring (9) protruding out of the end face is embedded in the end face of one opposite side of the fixed die (2) or the movable die (3).
4. The evacuated helmet shell forming apparatus of claim 1, wherein: the extraction opening (7) comprises an extraction cavity (71) which is arranged on the end face of one side of the movable mold (3) and the fixed mold (2) in the opposite direction, and an extraction flow channel (72) which is arranged on the fixed mold (2) and the movable mold (3) and is communicated with the extraction cavity (71) and the molding cavity (41), and the vacuumizing mechanism (8) comprises an extraction pipe (81) which is communicated with the extraction cavity (71) and a vacuum pump which is communicated with the extraction pipe (81).
5. The evacuated helmet shell forming apparatus of claim 1, wherein: the heating device (6) comprises a fixed heating plate (61) connected with the fixed die (2) and a movable heating plate (62) connected with the movable die (3).
6. An evacuated helmet shell forming apparatus as claimed in claim 5, wherein: the fixed die (2) is detachably connected with the fixed heating plate (61), and the movable die (3) is detachably connected with the movable heating plate (62).
7. The evacuated helmet shell forming apparatus of claim 6, wherein: frame (1) is connected with movable plate (10) along the direction of orientation or keeping away from cover half (2) sliding, move hot plate (62) fixed connection in movable plate (10).
8. A process for forming a helmet shell using the forming apparatus of any one of claims 1 to 7, wherein: the method comprises the following steps:
step S1: pre-dipping, namely pre-dipping resin in the original material of the helmet shell, and enabling the resin to be in a semi-cured state;
step S2: cutting, namely cutting the material presoaked with the resin in the step S1 into different sheet-shaped materials;
step S3: sticking cloth, namely sticking the cut material in the step S2 on the surface of the forming air bag (4) and fully spreading the material;
step S4: molding, namely placing the molding air bag (4) in the step S3 into a molding cavity (41) between the movable mold (3) and the fixed mold (2), sealing the edge of the molding air bag (4) and the molding cavity (41) by using a pressurizing device (5), inflating the molding air bag (4) by using the pressurizing device (5), vacuumizing the molding cavity (41) by using a vacuumizing mechanism (8), and synchronously heating and heating the movable mold (3) and the fixed mold (2);
step S5: and cooling, naturally cooling the movable mold (3) and the fixed mold (2) in the step S4, and demolding the helmet from the molding cavity (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910876574.8A CN110682554A (en) | 2019-09-17 | 2019-09-17 | Vacuumizing helmet shell forming equipment and forming process using equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910876574.8A CN110682554A (en) | 2019-09-17 | 2019-09-17 | Vacuumizing helmet shell forming equipment and forming process using equipment |
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| Publication Number | Publication Date |
|---|---|
| CN110682554A true CN110682554A (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910876574.8A Pending CN110682554A (en) | 2019-09-17 | 2019-09-17 | Vacuumizing helmet shell forming equipment and forming process using equipment |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203919745U (en) * | 2014-05-22 | 2014-11-05 | 厦门宇诠复材科技有限公司 | Thermoplastic molding's helmet mould |
| CN108407328A (en) * | 2018-02-11 | 2018-08-17 | 佛山市顺德区迈进机械制造有限公司 | A kind of hot-press molding method of composite product |
| CN210679790U (en) * | 2019-09-17 | 2020-06-05 | 浙江爱骑士体育用品有限公司 | Helmet forming equipment with vacuumizing mold |
-
2019
- 2019-09-17 CN CN201910876574.8A patent/CN110682554A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203919745U (en) * | 2014-05-22 | 2014-11-05 | 厦门宇诠复材科技有限公司 | Thermoplastic molding's helmet mould |
| CN108407328A (en) * | 2018-02-11 | 2018-08-17 | 佛山市顺德区迈进机械制造有限公司 | A kind of hot-press molding method of composite product |
| CN210679790U (en) * | 2019-09-17 | 2020-06-05 | 浙江爱骑士体育用品有限公司 | Helmet forming equipment with vacuumizing mold |
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