Glass fiber reinforced plastic curing forming device and method thereof

Abstract

The invention discloses a glass fiber reinforced plastic curing forming device, which comprises a mold and a gas heating device, the mold is mainly divided into three parts of a fence, a plurality of square blocks and a grid plate, the plurality of square blocks are arranged in the fence, and the distance between two adjacent square blocks is equal to the distance between the square blocks and the inner wall of the fence. When the improved glass fiber reinforced plastic curing forming device is used, the opening in the top end of the mold is sealed through the sealing mechanism, then the gas heating equipment injects hot gas into the heating mechanism, and the heating mechanism, the heat dissipation mechanism and the mold are matched with one another, so that gas is subjected to heat exchange synchronously from multiple positions of raw materials; therefore, the raw materials are located in the closed space, heating and shaping of the raw materials are rapidly completed, harmful gas generated by heating of the raw materials cannot be dissipated outwards to affect the body health of an operator, the raw materials do not make direct contact with outside air, heat dissipated outwards by the raw materials can be greatly reduced, and energy consumption of the device is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of glass fiber reinforced plastic solidification and molding devices, and in particular to a glass fiber reinforced plastic solidification and molding device and a method thereof. Background Art

[0002] Fiberglass grating is a plate structure made of glass fiber reinforced plastic composite material. It has excellent corrosion resistance, anti-slip, anti-aging, impact resistance and lightweight properties, so it is widely used in a variety of industrial and commercial applications.

[0003] In the production process of FRP grating, the existing FRP grating is generally shaped by pouring the raw materials into a mold and compacting them, and then injecting the heated solution into the pipe on the bottom side of the mold. The raw materials then exchange heat with the solution through the mold and the pipe to perform the heating and shaping operation of the raw materials. The heated raw materials may produce harmful gases that escape from the opening on the top side of the mold, affecting the health of the operator. The raw materials are in direct contact with the outside air, which will emit more heat and increase the energy consumption of the device. Summary of the invention

[0004] The object of the present invention is to provide a glass fiber reinforced plastic curing and forming device and method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fiberglass solidification molding device, comprising a mold and a gas heating device, wherein the mold is mainly divided into three parts: an enclosure, a plurality of square blocks and a mesh plate, wherein the plurality of square blocks are arranged in the enclosure, and the spacing between two adjacent square blocks is equal to the spacing between the square blocks and the inner wall of the enclosure, the mesh plate is arranged in the enclosure, and the outer peripheral wall of the mesh plate is in contact with the inner wall of the enclosure, the inner hole wall of the mesh plate is in contact with the outer peripheral wall of the corresponding square block, a heating mechanism is provided between the gas heating device and the mesh plate and in the mesh plate, a heat dissipation mechanism is provided on the enclosure, and a sealing mechanism is provided on the top side of the enclosure and in the enclosure.

[0006] Preferably, a plurality of support plates are fixedly installed in the bottom opening of the enclosure, and the spacing between two adjacent support plates is equal, the top side of the support plate is fixedly connected to the corresponding square block, the grid plate is located on the top side of the support plate, and a sealing ring is fixedly installed on the top of the grid plate, and the outer ring wall of the sealing ring is in contact with the inner wall of the enclosure.

[0007] Preferably, the heating mechanism includes a guide groove, the grid plate is a heat conduction plate, and the enclosure is made of an insulation plate, the guide groove is opened at the middle position in the grid plate wall, the exhaust end of the gas heating equipment is connected and equipped with a first electrically controlled three-way valve, a first guide shell is fixedly installed at one end of the bottom side of the grid plate, and several exhaust ends of the first guide shell are inserted into the guide groove, the first guide shell is matched with the corresponding support plate and the inner wall gap of the enclosure, the bottom side of the first guide shell is connected and equipped with a first soft pipe, and the air inlet end of the first soft pipe is connected and equipped with the exhaust end of the first electrically controlled three-way valve.

[0008] Preferably, the heat dissipation mechanism includes a plurality of second soft tubes, which are arranged at the other end of the bottom side of the grid plate, and one end of each second soft tube is inserted into the guide groove and fixedly connected to the grid plate, and the spacing between two adjacent second soft tubes is equal. Two flaring grooves are relatively opened on the inner wall of the top of the enclosure, and the other end of each second soft tube is inserted into the flaring groove at one end and fixedly connected to the enclosure, and the flaring groove is located above the square block.

[0009] Preferably, a second guide shell is fixedly installed on the right side wall of the top of the enclosure, and the interior of the second guide shell is connected with the interior of the flared groove at the other end through a plurality of connecting holes, an air pump is fixedly installed on the second guide shell, and the air inlet end of the air pump is fixedly passed through the shell wall of the second guide shell, and the exhaust end of the air pump is connected and installed with a second electrically-controlled three-way valve, a connecting pipe is connected and installed on one exhaust end of the second electrically-controlled three-way valve, and the exhaust end of the connecting pipe is connected and installed with the reflux air inlet end of the gas heating equipment, and an exhaust pipe is connected and installed on the other exhaust end of the second electrically-controlled three-way valve.

[0010] Preferably, the sealing mechanism includes a lid, which is arranged above the enclosure, a soft ring is fixedly installed on the bottom side of the lid, and the bottom side of the soft ring is in contact with the top side of the enclosure, and a limit strip is fixedly installed at the middle position of the top side of the lid.

[0011] Preferably, limiting grooves are provided at the four corners of the soft ring and the bottom side of the cover, hemispherical blocks are fixedly installed at the four corners of the top side of the enclosure, and the top of each hemispherical block is inserted into the corresponding limiting groove.

[0012] Preferably, a plurality of positioning grooves are provided on the left and right side walls of the bottom of the grid plate, and the spacing between two adjacent positioning grooves is equal, a positioning rod is slidably installed at the position corresponding to the positioning groove on the plate wall of the bottom of the enclosure, and one end of the positioning rod is arranged in an inclined shape and inserted into the corresponding positioning groove, two connecting rods are relatively provided on the outer peripheral side of the enclosure, and each connecting rod is fixedly connected to the corresponding positioning rod, a piston cylinder is provided at the middle position between the connecting rod and the enclosure, and the bottom of the piston cylinder is fixedly connected to the enclosure, a piston rod is slidably installed in the piston cylinder, and the driving end of the piston rod extends to the outside of the corresponding piston cylinder and is fixedly connected to the corresponding connecting rod.

[0013] Preferably, a spring is provided between the plug plate of the piston rod and the inner wall of the corresponding piston cylinder, and the two ends of the spring are fixedly connected to the corresponding piston rod and the inner wall of the corresponding piston cylinder respectively, a pressure limiting valve is connected and installed on the outer peripheral wall of the piston cylinder, and the exhaust ends of the two pressure limiting valves are respectively connected to the interior of the corresponding second soft tube and the interior of the second guide shell through a conduit.

[0014] A glass fiber reinforced plastic curing and molding method, comprising the above-mentioned glass fiber reinforced plastic curing and molding device, specifically comprises the following steps: Step 1: The operator first removes the cover from the mold, then pours the raw material into the mold and compacts the raw material, then puts the cover back on the mold to close the top opening of the mold again, and the raw material loading operation is completed; Step 2: After the loading operation of step 1 is completed, the air pump is started to continuously extract the gas in the mold and inject the gas into the gas heating device for heating treatment. Then the hot gas flows back into the mold through the first soft pipe, the guide groove, the second soft ring and the expansion groove to replenish the gas lost in the mold. In the process of the hot gas passing through the mold and the guide groove, the raw material and the gas quickly exchange heat to complete the heating and shaping treatment of the raw material, forming a glass fiber reinforced plastic grille of a specific shape; Step 3: After the heating and shaping of the raw materials in step 2 is completed, the gas heating equipment stops running, the first electrically controlled three-way valve is closed, and the second electrically controlled three-way valve controls the exhaust end of the air pump to be connected to the exhaust pipe. At this time, the air pump extracts the harmful gas in the mold and guides it to a specific position for discharge through the exhaust pipe, and at the same time, the negative pressure intensity in the mold gradually increases. At this time, part of the gas in the piston cylinder flows out of the piston cylinder through the pressure limiting valve and the conduit, so that the negative pressure intensity in the piston cylinder is enhanced, thereby pulling the piston rod out of the piston cylinder, and then pulling the positioning rod out of the positioning groove through the connecting rod to release the constrained positioning state of the grid plate, and then the negative pressure cavity in the mold pulls the grid plate upward to push the FRP grille out of the mold to automatically complete the demoulding process of the FRP grille; Step 4: After the air pump in step 3 reaches a specific running time, the first electrically controlled three-way valve controls the first soft tube to connect with the outside world, and the outside gas flows into the mold through the first electrically controlled three-way valve, the first soft tube, the guide groove and the expansion groove, so that the gas with lower outside temperature continues to blow on the FRP grille, quickly completing the cooling process of the FRP grille, and at the same time, the residual harmful gas in the mold is taken away by the airflow.

[0015] The present invention has at least the following beneficial effects: 1. When the improved FRP curing and molding device is used, the top opening of the mold is sealed by the sealing mechanism, and then the gas heating device injects hot gas into the heating mechanism. Through the cooperation of the heating mechanism, the heat dissipation mechanism and the mold, the gas is simultaneously heat-exchanged from multiple positions of the raw material, so that the raw material is located in a closed space and the heating and shaping of the raw material is completed quickly. The harmful gas generated by the heating of the raw material will not escape to the outside and affect the health of the operator, and the raw material is not in direct contact with the outside air, which can greatly reduce the heat emitted by the raw material and reduce the energy consumption of the device; 2. During the above-mentioned process of heating and shaping the raw materials, the heat dissipation mechanism extracts the gas in the mold, introduces it into the gas heating device for reheating, and re-injects it into the heating mechanism, so that the gas heating device only needs to consume less energy to reheat the gas to the predetermined temperature, thereby reducing the energy consumption of the equipment.

[0016] 3. After the above raw materials are heated and shaped, the heating mechanism disconnects from the gas heating equipment, and the heat dissipation mechanism extracts the harmful gas in the mold and diverts it to a specific position for discharge. At this time, a negative pressure cavity is formed in the mold. First, the sealing mechanism automatically releases the constraint and limit state of the grid plate. Then, due to the pull of the negative pressure cavity on the grid plate, the grid plate pushes the FRP grille upward from all positions on the bottom side of the FRP grille, and pushes the FRP grille out of the mold, automatically completing the demoulding process of the FRP grille. Due to the constraint and limit of the sealing mechanism on the FRP grille, the FRP grille is just located at the air outlet of the heat dissipation mechanism. At this time, the heating mechanism and the heat dissipation mechanism cooperate with each other, and the gas with lower outside temperature blows on the FRP grille, quickly completing the cooling process of the FRP grille, and avoiding overheating of the FRP grille and causing injuries to the operator when taking materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0018] Figure 1 It is an overall schematic diagram of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the overall structure when the middle lid is inverted; Figure 3 Schematic diagram of the internal structure of the mold of the present invention; Figure 4 It is a front view of the internal structure of the mold of the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure at A in the middle; Figure 6 For the present invention Figure 4 A schematic diagram of the enlarged structure at B in the middle; Figure 7 For the present invention Figure 4 Schematic diagram of the enlarged structure at C in the middle; Figure 8 It is a schematic diagram of the overall structure of part of the grid plate and part of the connecting rod of the present invention; Fig. 9 For the present invention Figure 8 Schematic diagram of the enlarged structure at D in the middle; Fig.10 Schematic diagram of the internal structure of the grid plate of the present invention.

[0019] In the figure: 1. mold; 11. enclosure; 12. square block; 13. grid plate; 14. support plate; 15. sealing ring; 2. gas heating equipment; 3. heating mechanism; 31. guide groove; 32. first electric-controlled three-way valve; 33. first guide shell; 34. first soft tube; 4. heat dissipation mechanism; 41. second soft tube; 42. expansion groove; 43. second guide shell; 44. connecting hole; 45. air pump; 46. second electric-controlled three-way valve; 47. connecting pipe; 48. exhaust pipe; 5. sealing mechanism; 51. cover; 52. soft ring; 53. limit groove; 54. hemispherical block; 55. positioning groove; 56. positioning rod; 57. connecting rod; 58. piston cylinder; 59. piston rod; 510. spring; 511. pressure-limiting valve; 512. conduit; 513. limit strip. DETAILED DESCRIPTION

[0020] In order to make the technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] Embodiment 1: The present invention provides a technical solution: Referring to Figure 1- and 10. A glass fiber reinforced plastic curing and molding device disclosed in the present invention comprises a mold 1 and a gas heating device 2. The mold 1 is mainly divided into three parts, namely an enclosure 11, a plurality of square blocks 12 and a mesh plate 13. The plurality of square blocks 12 are arranged in the enclosure 11, and the spacing between two adjacent square blocks 12 is equal to the spacing between the square blocks 12 and the inner wall of the enclosure 11. The mesh plate 13 is arranged in the enclosure 11, and the outer peripheral wall of the mesh plate 13 is in contact with the inner wall of the enclosure 11, and the inner hole wall of the mesh plate 13 is in contact with the outer peripheral wall of the corresponding square block 12. A heating mechanism 3 is provided between the gas heating device 2 and the mesh plate 13 and in the mesh plate 13. A heat dissipation mechanism 4 is provided on the enclosure 11. A sealing mechanism 5 is provided on the top side of the enclosure 11 and in the enclosure 11.

[0022] In this embodiment, when the improved FRP curing and molding device is used, the operator first releases the sealing mechanism 5 from the opening of the mold 1, and then pours the raw material into the gap between the square block 12 and the inner wall of the enclosure 11 and compacts the raw material. At this time, due to the restraint and limitation of the enclosure 11, the square block 12 and the grid plate 13 on the raw material, the raw material is located in the mold 1 to form a FRP grid of a specific size; After the feeding operation in the above-mentioned mold 1 is completed, the operator seals the top opening of the mold 1 through the sealing mechanism 5, and then the heat dissipation mechanism 4 continues to suck out gas from the mold 1, and injects the gas into the gas heating device 2 for gas heating treatment, and then the hot gas is injected into the heating mechanism 3, and the hot gas quickly exchanges heat with the grid plate 13 and the square block 12, so that the grid plate 13 and the square block 12 are relatively stably maintained at a specific temperature, and then the hot gas flows back into the mold 1 through the heat dissipation mechanism 4, so that the mold 1 is filled with hot gas. At this time, the various parts of the raw material exchange heat with the hot gas, grid plate 13 and square block 12 in the mold 1 respectively, and the raw material is quickly heated, so that the raw material can quickly complete the heating and shaping operation to form a glass fiber reinforced plastic grid with a fixed shape. The raw material is in a closed and high-temperature environment, which can greatly reduce the heat emitted by the raw material to the outside, and the harmful gas generated when the raw material is heated will not escape to the outside due to the obstruction of the closed space; During the above-mentioned process of heating and shaping the raw materials, the heat dissipation mechanism 4 can extract the gas with a lot of residual heat in the mold 1, and introduce the gas into the gas heating device 2 for reheating, so that the gas heating device 2 only needs to consume less energy to reheat the gas to the predetermined temperature, thereby reducing the energy consumption of the equipment.

[0023] After the above-mentioned raw materials are heated and shaped, the heating mechanism 3 is disconnected from the gas heating device 2, and the heat dissipation mechanism 4 extracts the harmful gas in the mold 1 and guides it to a specific position for discharge. At this time, the negative pressure intensity in the mold 1 gradually increases. First, the sealing mechanism 5 automatically releases the constraint and limit state of the grid plate 13. Then, due to the pulling of the negative pressure chamber on the grid plate 13, the grid plate 13 pushes the FRP grille upward from all positions on the bottom side of the FRP grille, and pushes the FRP grille out of the mold 1, automatically completing the demoulding process of the FRP grille, avoiding that some positions of the FRP grille are subjected to excessive force, resulting in deformation and damage of some positions of the FRP grille. Due to the constraint and limit of the FRP grille by the sealing mechanism 5, the FRP grille moves up to the air outlet of the heat dissipation mechanism 4 and stops moving. At this time, the heating mechanism 3 continuously absorbs the gas with a lower external temperature and blows it on the FRP grille, quickly completing the cooling process of the FRP grille, avoiding that the FRP grille is overheated and causes the operator to be injured when taking the material, and the flowing gas can carry the residual toxic gas in the mold 1 and discharge it.

[0024] In a further preferred embodiment of the present invention, Figure 3 - Figure 5 As shown, a plurality of support plates 14 are fixedly installed in the bottom opening of the enclosure 11, and the spacing between two adjacent support plates 14 is equal, the top side of the support plate 14 is fixedly connected to the corresponding square block 12, the grid plate 13 is located on the top side of the support plate 14, and a sealing ring 15 is fixedly installed on the top of the grid plate 13, and the outer ring wall of the sealing ring 15 is in contact with the inner wall of the enclosure 11; In this embodiment, the support plate 14 is arranged between the locking square block 12 and the enclosure 11, so that the bottom opening of the enclosure 11 can exchange gas with the outside by itself, so as to avoid the negative pressure cavity or high pressure cavity in the bottom opening of the enclosure 11 affecting the movement of the grid plate 13 during the movement of the grid plate 13; It should be noted that a sealing ring may be installed on the inner hole wall of the mesh plate 13 to seal the gap between the square block 12 and the mesh plate 13 to enhance the sealing strength between the mesh plate 13 and the square block 12 .

[0025] In a further preferred embodiment of the present invention, Figure 4 , Figure 5 and Fig.10As shown, the heating mechanism 3 includes a guide groove 31, the grid plate 13 is a heat-conducting plate, and the enclosure 11 is made of an insulation plate. The guide groove 31 is opened at the middle position of the grid plate 13 wall, the exhaust end of the gas heating device 2 is connected and equipped with a first electrically controlled three-way valve 32, one end of the bottom side of the grid plate 13 is fixedly equipped with a first guide shell 33, and several exhaust ends of the first guide shell 33 are inserted into the guide groove 31, the first guide shell 33 is matched with the corresponding support plate 14 and the inner wall gap of the enclosure 11, the bottom side of the first guide shell 33 is connected and equipped with a first soft pipe 34, and the air inlet end of the first soft pipe 34 is connected and installed with the exhaust end of the first electrically controlled three-way valve 32; In this embodiment, the hot gas discharged from the above-mentioned gas heating equipment 2 directly enters and exits the first soft pipe 34 through the first electrically controlled three-way valve 32, and is thereby introduced into the diversion groove by the first soft pipe 34, and finally the hot gas is injected into the guide groove 31 from multiple positions at one end of the guide groove 31, so that the hot gas quickly fills the guide groove 31. At this time, the hot gas fits tightly against the inner wall of the guide groove 31, so that the heat is quickly introduced into the grid plate 13 through the contact surface between the hot gas and the guide groove 31, so that the grid plate 13 is relatively stably maintained within a specific range.

[0026] In a further preferred embodiment of the present invention, Figure 1 , Figure 4 and Figure 6 As shown, the heat dissipation mechanism 4 includes a plurality of second soft tubes 41, which are arranged at the other end of the bottom side of the grid plate 13, and one end of each second soft tube 41 is inserted into the guide groove 31 and fixedly connected to the grid plate 13, and the spacing between two adjacent second soft tubes 41 is equal, and two flaring grooves 42 are oppositely opened on the inner wall of the top of the enclosure 11, and the other end of each second soft tube 41 is inserted into the flaring groove 42 at one end and fixedly connected to the enclosure 11, and the flaring groove 42 is located above the square block 12; In the present embodiment, the gas passing through the guide groove 31 flows into the expanded groove 42 at one end from the second soft tube 41, and since the amount of gas discharged from the open end of the expanded groove 42 is limited, the hot gas quickly fills the expanded groove 42 and increases the gas pressure in the expanded groove 42, and finally the hot gas in the expanded groove 42 is linearly and quickly discharged from the expanded opening to replenish the gas lost in the mold 1, and the gas discharge flow rate is relatively fast.

[0027] In a further preferred embodiment of the present invention, Figure 1 , Figure 4 and Figure 6As shown, a second flow guide shell 43 is fixedly installed on the right side wall of the top of the enclosure 11, and the interior of the second flow guide shell 43 is connected to the interior of the flared groove 42 at the other end through a plurality of connecting holes 44, an air pump 45 is fixedly installed on the second flow guide shell 43, and the air inlet end of the air pump 45 is fixedly penetrated through the shell wall of the second flow guide shell 43, and the exhaust end of the air pump 45 is connected and installed with a second electrically controlled three-way valve 46, and a connecting pipe 47 is connected and installed on one exhaust end of the second electrically controlled three-way valve 46, and the exhaust end of the connecting pipe 47 is connected and installed with the reflux air inlet end of the gas heating device 2, and the other exhaust end of the second electrically controlled three-way valve 46 is connected and installed with an exhaust pipe 48; In this embodiment, after the hot air is discharged into the mold 1, it moves toward the other flaring groove 42 and is sucked away by the air pump 45 through the other flaring groove 42 and the second guide shell 43. Then, the gas with more residual heat is re-injected into the gas heating device 2 through the second electrically controlled three-way valve 46 and the connecting pipe 47 for gas heating and reuse. After the heating and shaping of the above-mentioned raw materials are completed, the second electrically controlled three-way valve 46 controls the disconnection of the connection between the exhaust end of the air pump 45 and the connecting pipe 47, and makes the exhaust end of the air pump 45 connected to the exhaust pipe 48. At the same time, the gas heating device 2 stops running, and the first electrically controlled three-way valve 32 controls the disconnection of the connection between the first soft tube 34 and the exhaust end of the gas heating device 2. At this time, the air pump 45 extracts the harmful gas in the mold 1 and injects it into the exhaust pipe 48, which is then diverted by the exhaust pipe 48 to a specific position for discharge. At the same time, the negative pressure intensity inside the mold 1, the first soft tube 34 and the second guide shell 43 gradually increases.

[0028] In a further preferred embodiment of the present invention, Figure 1 , Figure 2 and Figure 4 As shown, the sealing mechanism 5 includes a cover 51, which is arranged above the enclosure 11, and a soft ring 52 is fixedly installed on the bottom side of the cover 51, and a limit strip 513 is fixedly installed at the middle position of the top side of the cover 51 where the bottom side of the soft ring 52 is connected to the top side of the enclosure 11; In the present embodiment, when the raw material is loaded, the operator first removes the cover 51 from the mold 1, and then pours the raw material into the gap between the square block 12 and the inner wall of the enclosure 11 and compacts the raw material. At this time, due to the constraints and limitations on the raw material by the enclosure 11, the square block 12 and the grid plate 13, the raw material is located in the mold 1 to form a fiberglass grille of a specific size. Then the operator places the cover 51 on the top side of the mold 1 again. Due to the gravity of the cover 51 itself, the soft pad is pressed downward, so that the bottom side of the soft pad is tightly attached to the top side of the enclosure 11. The raw material is heated and shaped in a closed space, and the generated harmful gases will not float out of the mold 1.

[0029] In a further preferred embodiment of the present invention, Figure 1 - Figure 3 As shown, the four corners of the soft ring 52 and the bottom side of the cover 51 are provided with limiting grooves 53, the four corners of the top side of the enclosure 11 are fixedly installed with hemispherical blocks 54, and the top of each hemispherical block 54 is inserted into the corresponding limiting groove 53; In this embodiment, when the cover 51 is placed on the enclosure 11, if there is a certain position deviation between the hemispherical block 54 and the limiting groove 53, due to the mutual interference between the arc surface of the hemispherical block 54 and the inner ring edge of the limiting hole opening, the cover 51 can be pushed along the arc surface of the hemispherical block 54, and the position of the cover 51 is automatically adaptively adjusted. After the cover 51 is placed on the mold 1, due to the mutual interference between the hemispherical block 54 and the inner wall of the limiting groove 53 opening, the cover 51 is stably placed at a specific position on the top side of the enclosure 11, thereby avoiding the misalignment of the cover 51 and the mold 1 affecting the use of the cover 51.

[0030] In a further preferred embodiment of the present invention, Figure 1 , Figure 4 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, a plurality of positioning grooves 55 are provided on the left and right side walls at the bottom of the grid plate 13, and the spacing between two adjacent positioning grooves 55 is equal. A positioning rod 56 is slidably installed at the position corresponding to the positioning groove 55 on the plate wall at the bottom of the enclosure 11, and one end of the positioning rod 56 is arranged in an inclined shape and inserted into the corresponding positioning groove 55. Two connecting rods 57 are relatively provided on the outer peripheral side of the enclosure 11, and each connecting rod 57 is fixedly connected to the corresponding positioning rod 56. A piston cylinder 58 is provided at the middle position between the connecting rod 57 and the enclosure 11, and the bottom of the piston cylinder 58 is fixedly connected to the enclosure 11. A piston rod 59 is slidably installed in the piston cylinder 58, and the driving end of the piston rod 59 extends to the outside of the corresponding piston cylinder 58 and is fixedly connected to the corresponding connecting rod 57. In this embodiment, the setting of the connecting rod 57 enables the piston rod 59 to push and pull multiple positioning rods 56 at one time, and the mutual interference between the positioning rods 56 and the inner wall of the positioning groove 55 can perform the constrained positioning operation of the grid plate 13, thereby preventing the grid plate 13 from moving upward when it does not need to move and affecting the use of the device.

[0031] In a further preferred embodiment of the present invention, Figure 4 and Figure 7As shown, a spring 510 is provided between the plug plate of the piston rod 59 and the inner wall of the corresponding piston cylinder 58, and the two ends of the spring 510 are respectively fixedly connected to the corresponding piston rod 59 and the inner wall of the corresponding piston cylinder 58, and a pressure limiting valve 511 is connected and installed on the outer peripheral wall of the piston cylinder 58, and the exhaust ends of the two pressure limiting valves 511 are respectively connected to the interior of the corresponding second soft pipe 41 and the interior of the second guide shell 43 through the conduit 512; In this embodiment, as the negative pressure strength inside the mold 1, inside the first soft tube 34 and inside the second guide shell 43 gradually increases, the pressure difference at both ends of the pressure limiting valve 511 gradually reaches the threshold value, so that part of the gas in the piston cylinder 58 flows out of the piston cylinder 58, and the negative pressure chamber formed in the piston cylinder 58 pulls the piston rod 59 out of the piston cylinder 58 and compresses the spring 510 until the piston rod 59 and the pressure limiting valve 511 conflict with each other. When the piston rod 59 extends out of the piston cylinder 58, the positioning rod 56 is pulled out of the positioning groove 55 through the connecting rod 57, and the constrained positioning state of the grid plate 13 is released. The device has a high degree of automation and does not require the operator to perform other operations. After the restrained positioning state of the grid plate 13 is released, as the negative pressure strength in the mold 1 further increases, the pressure difference between the upper and lower sides of the grid plate 13 further increases, so that the thrust for pushing the grid plate 13 upward gradually increases, until the grid plate 13 pushes the FRP grille out of the mold 1 to complete the demoulding process of the FRP grille, and the FRP grille moving upward will not continue to move upward after it conflicts with the limit strip 513. At this time, the FRP grille is located between the two flaring grooves 42, and the position of the FRP grille is automatically adjusted without the operator having to perform other operations; After the air pump 45 extracts most of the gas mixed with harmful gas in the mold 1, the first electrically controlled three-way valve 32 controls the first soft tube 34 to communicate with the outside and only opens half of the air inlet. At this time, due to the limited air intake at the second soft tube 41, the mold 1 is always a negative pressure chamber, so that the grid plate 13 is always pushed upward, so that the glass fiber reinforced plastic grille is stably located between the two expansion grooves 42. At this time, the gas with a lower temperature flowing between the two expansion grooves 42 blows on the grid plate 13, thereby quickly taking away the heat on the grid plate 13, avoiding the grid plate 13 from being too high in temperature and causing the operator to be injured when taking the grid plate 13 out of the mold 1, and the flow of gas can entrain the residual toxic gas in the mold 1 and discharge it together. After the cooling operation of the grid plate 13 is completed, the air pump 45 stops running. At this time, as the gas in the mold 1 flows into the negative pressure chamber in the mold 1, the operator can directly remove the cover 51 from the mold 1 to take out the glass fiber reinforced plastic grille in the mold 1.

[0032] Embodiment 2: A method for curing and molding a glass fiber reinforced plastic, comprising the above-mentioned glass fiber reinforced plastic curing and molding device, specifically comprising the following steps: Step 1: The operator first removes the cover 51 from the mold 1, then pours the raw material into the mold 1 and compacts the raw material, then puts the cover 51 back on the mold 1 to close the top opening of the mold 1 again, and the raw material loading operation is completed; Step 2: After the loading operation of step 1 is completed, the air pump 45 is started to continuously extract the gas in the mold 1 and inject the gas into the gas heating device 2 for heating treatment, and then the hot gas flows back into the mold 1 through the first soft pipe 34, the guide groove 31, the second soft ring 52 and the expansion groove 42 to replenish the gas lost in the mold 1. In the process of the hot gas passing through the mold 1 and the guide groove 31, the raw material and the gas quickly exchange heat to complete the heating and shaping treatment of the raw material, forming a glass fiber reinforced plastic grille with a specific shape; Step 3: After the heating and shaping of the raw materials in step 2 is completed, the gas heating device 2 stops running, the first electrically controlled three-way valve 32 is closed, and the second electrically controlled three-way valve 46 controls the exhaust end of the air pump 45 to be connected with the exhaust pipe 48. At this time, the air pump 45 extracts the harmful gas in the mold 1 and guides it to a specific position for discharge through the exhaust pipe 48, and at the same time, the negative pressure intensity in the mold 1 gradually increases. At this time, part of the gas in the piston cylinder 58 flows out of the piston cylinder 58 through the pressure limiting valve 511 and the conduit 512, so that the negative pressure intensity in the piston cylinder 58 is enhanced, thereby pulling the piston rod 59 out of the piston cylinder 58, and then pulling the positioning rod 56 out of the positioning groove 55 through the connecting rod 57 to release the constrained positioning state of the grid plate 13, and then the negative pressure cavity in the mold 1 pulls the grid plate 13 upward to push the glass fiber reinforced plastic grille out of the mold 1 to automatically complete the demoulding process of the glass fiber reinforced plastic grille; Step 4: After the air pump 45 in step 3 reaches a specific operating time, the first electrically controlled three-way valve 32 controls the first soft tube 34 to be connected to the outside, and the outside gas flows into the mold 1 through the first electrically controlled three-way valve 32, the first soft tube 34, the guide groove 31 and the expansion groove 42, so that the gas with a lower outside temperature continues to blow on the FRP grille, quickly completing the cooling process of the FRP grille, and at the same time, the residual harmful gas in the mold 1 is taken away by the airflow.

[0033] Working principle: When the improved FRP curing and molding device is used, the operator first removes the cover 51 from the mold 1, and then pours the raw material into the gap between the square block 12 and the inner wall of the enclosure 11 and compacts the raw material. At this time, due to the restriction and limitation of the enclosure 11, the square block 12 and the grid plate 13 on the raw material, the raw material is located in the mold 1 to form a FRP grid of a specific size; After the above raw materials are loaded, the operator places the cover 51 on the top side of the enclosure 11, and inserts the hemispherical block 54 into the limiting groove 53. At this time, due to the mutual interference between the hemispherical block 54 and the inner wall of the opening of the limiting groove 53, the cover 51 is stably placed at a specific position on the top side of the enclosure 11, and due to the effect of the weight of the cover 51 itself, the soft pad is pressed downward, so that the bottom side of the soft pad is tightly attached to the top side of the enclosure 11; It should be noted that when the cover 51 is placed on the enclosure 11, if there is a certain position deviation between the hemispherical block 54 and the limiting groove 53, due to the mutual interference between the arc surface of the hemispherical block 54 and the inner ring edge of the limiting hole opening, the cover 51 can be pushed along the arc surface of the hemispherical block 54, and the position of the cover 51 can be automatically adaptively adjusted; After the above-mentioned cover 51 is installed, the operator controls the exhaust port of the first soft tube 34 and the air pump 45 to be connected to the exhaust end of the gas heating device 2 and the return end of the gas heating device 2 respectively through the first electrically controlled three-way valve 32 and the second electrically controlled three-way valve 46, and at the same time, the air pump 45 starts to continuously extract the gas in the second guide shell 43, so that a negative pressure cavity is continuously formed in the second guide shell 43, and the gas in the mold 1 continuously flows into the second guide shell 43 through the expansion groove 42 and the connecting hole 44 to replenish the lost gas in the second guide shell 43, and the gas extracted by the air pump 45 is injected into the gas heating device 2 through the connecting pipe 47 for gas heating treatment, and then The hot air after post-heating is injected into the first guide shell 33 through the first soft pipe 34, and is injected into the guide groove 31 from the exhaust end of the first guide shell 33. Then, the hot air passes through the guide shell and quickly fills the guide groove 31, and flows back into the mold 1 through the second soft pipe 41 and the expansion groove 42 to replenish the lost gas in the mold 1. According to the above, a low-strength negative pressure cavity is continuously formed in the mold 1 and the cover 51 at this time, thereby applying a downward pulling force to the cover 51. At this time, the soft ring 52 is deformed by the pressing and shrinking of the cover 51, so that the bottom side of the soft ring 52 is tightly fitted with the top side of the enclosure 11, thereby enhancing the sealing strength of the gap between the cover 51 and the enclosure 11; When the hot air passes through the guide groove 31, the hot air and the mesh plate 13 are quickly heat exchanged through the larger contact surface, so that the mesh plate 13 is relatively stably maintained at a specific temperature, and the square block 12 is heat exchanged with the mesh plate 13 so that the square block 12 is synchronously maintained at a specific temperature. According to the positions of the various parts of the raw material, the hot air, the mesh plate 13 and the square block 12 in the mold 1 are respectively heat exchanged synchronously, and the raw material is quickly heated, so that the raw material is quickly heated and set, and a glass fiber reinforced plastic grille with a fixed shape is formed; After the heating and shaping of the above raw materials are completed, the second electrically controlled three-way valve 46 controls the connection between the exhaust end of the air pump 45 and the connecting pipe 47 to be disconnected, and the exhaust end of the air pump 45 is connected to the exhaust pipe 48, and at the same time, the gas heating device 2 stops running, and the first electrically controlled three-way valve 32 controls the connection between the first soft pipe 34 and the exhaust end of the gas heating device 2 to be disconnected; At this time, the gas extracted from the mold 1 by the air pump 45 is injected into the exhaust pipe 48, and the exhaust pipe 48 guides the gas to a specific position for discharge. At the same time, the negative pressure strength inside the mold 1, inside the first soft tube 34 and inside the second guide shell 43 gradually increases. After the pressure difference at both ends of the pressure limiting valve 511 reaches the threshold, part of the gas in the piston cylinder 58 flows out of the piston cylinder 58. The negative pressure chamber formed in the piston cylinder 58 pulls the piston rod 59 out of the piston cylinder 58 and compresses the spring 510 until the piston rod 59 and the pressure limiting valve 511 collide with each other. When the piston rod 59 extends out of the piston cylinder 58, the positioning rod 56 is pulled out of the positioning groove 55 through the connecting rod 57, thereby releasing the constrained positioning state of the grid plate 13. It should be noted that, in the process of the piston rod 59 pushing the positioning rod 56, the inner wall between the positioning rod 56 and the positioning groove 55 will not be further enlarged due to the adhesion between the glass fiber reinforced plastic grille and the inner wall of the mold 1 constraining the grid plate 13; After the restrained positioning state of the grid plate 13 is released, as the negative pressure strength in the mold 1 further increases, the pressure difference between the upper and lower sides of the grid plate 13 further increases, so that the thrust for pushing the grid plate 13 upward gradually increases, until the grid plate 13 pushes the FRP grille out of the mold 1 to complete the demoulding process of the FRP grille, and the FRP grille moving upward will not continue to move upward after contacting the limit bar 513, and the FRP grille is located between the two flaring grooves 42; After the air pump 45 extracts most of the gas mixed with harmful gas in the mold 1, the first electrically controlled three-way valve 32 controls the first soft tube 34 to communicate with the outside and only opens half of the air inlet. At this time, due to the limited air intake at the second soft tube 41, the mold 1 is always a negative pressure cavity, so that the grid plate 13 is always pushed upward, so that the glass fiber reinforced plastic grille is stably located between the two expanded grooves 42. At this time, the gas with a lower temperature flowing between the two expanded grooves 42 blows on the grid plate 13, thereby quickly taking away the heat on the grid plate 13. After the cooling operation of the grid plate 13 is completed, the air pump 45 stops running. At this time, as the gas in the mold 1 flows into the negative pressure cavity in the mold 1, the operator can directly remove the cover 51 from the mold 1 to take out the glass fiber reinforced plastic grille in the mold 1. It should be noted that the negative pressure cavity in the above-mentioned mold 1 simultaneously applies a pulling force of the same magnitude to the cover 51 and the mesh plate 13, and the pulling force pushing the mesh plate 13 upward needs to overcome the gravity of the mesh plate 13 and the FRP grille. Therefore, the upward thrust exerted by the FRP grille on the limit bar 513 is smaller than the suction force exerted on the mesh plate 13, and the downward pressure exerted on the limit bar 513 is the gravity of the limit bar 513, the cover 51 and the soft pad plus the suction force exerted on the cover 51. Therefore, when the FRP grille and the limit bar 513 conflict with each other, the cover 51 is still stably covered on the top side of the enclosure 11; When the strength of the negative pressure cavity in the mold 1 gradually decreases, due to the push of the spring 510 on the piston rod 59, the piston rod 59 extending from the piston cylinder 58 is pushed back into the piston cylinder 58 until the connecting rod 57 and the piston cylinder 58 collide with each other, and the inclined end of the positioning rod 56 is reinserted into the enclosure 11. At the same time, the piston cylinder 58 inhales part of the gas from the second guide shell 43 and the second soft tube 41 through the pressure limiting valve 511 and the conduit 512, respectively, to restore the gas storage capacity in the piston cylinder 58. After the above-mentioned fiberglass grille is taken out from the mold 1, the operator pushes the mesh plate 13 downward. When the bottom edge of the mesh plate 13 and the inclined surface of the positioning rod 56 conflict with each other, the positioning rod 56 can be squeezed into the plate wall of the enclosure 11 along the inclined surface of the positioning rod 56. Then, when the positioning rod 56 is aligned with the positioning groove 55, the spring 510 pushes the positioning rod 56 into the positioning groove 55 again. At this time, the restraint and limitation of the mesh plate 13 are completed again through the mutual conflict between the bottom side plane of the positioning rod 56 and the inner wall of the positioning groove 55 and the mutual conflict between the mesh plate 13 and the support plate 14. The position of the mesh plate 13 in the mold 1 remains stable. At this time, the operator can continuously perform the heating and shaping operation of the fiberglass according to the above-mentioned re-operation.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A glass fiber reinforced plastic curing and molding device, comprising a mold (1) and a gas heating device (2), characterized in that: The mold (1) is mainly divided into three parts, namely, an enclosure (11), a plurality of square blocks (12) and a grid plate (13). The plurality of square blocks (12) are arranged in the enclosure (11), and the spacing between two adjacent square blocks (12) is equal to the spacing between the square blocks (12) and the inner wall of the enclosure (11). The grid plate (13) is arranged in the enclosure (11), and the outer peripheral wall of the grid plate (13) is in contact with the inner wall of the enclosure (11). The inner hole wall of the grid plate (13) is in contact with the outer peripheral wall of the corresponding square block (12). A heating mechanism (3) is provided between the gas heating device (2) and the grid plate (13) and in the grid plate (13). A heat dissipation mechanism (4) is provided on the enclosure (11). A sealing mechanism (5) is provided on the top side of the enclosure (11) and in the enclosure (11).

2. A glass fiber reinforced plastic curing and molding device according to claim 1, characterized in that: A plurality of support plates (14) are fixedly mounted in the bottom opening of the enclosure (11), and the spacing between two adjacent support plates (14) is equal; the top side of the support plate (14) is fixedly connected to the corresponding square block (12); the grid plate (13) is located on the top side of the support plate (14); a sealing ring (15) is fixedly mounted on the top of the grid plate (13), and the outer ring wall of the sealing ring (15) is in contact with the inner wall of the enclosure (11).

3. A glass fiber reinforced plastic curing and forming device according to claim 2, characterized in that: The heating mechanism (3) comprises a guide groove (31), the grid plate (13) is a heat conduction plate, and the enclosure (11) is made of an insulation plate, the guide groove (31) is opened at a middle position in the wall of the grid plate (13), the exhaust end of the gas heating device (2) is connected to and equipped with a first electrically controlled three-way valve (32), one end of the bottom side of the grid plate (13) is fixedly equipped with a first guide shell (33), and a plurality of exhaust ends of the first guide shell (33) are inserted into the guide groove (31), the first guide shell (33) is matched with the inner wall gap of the corresponding support plate (14) and the enclosure (11), the bottom side of the first guide shell (33) is connected to and equipped with a first soft pipe (34), and the air inlet end of the first soft pipe (34) is connected to and equipped with an exhaust end of the first electrically controlled three-way valve (32).

4. A glass fiber reinforced plastic curing and forming device according to claim 3, characterized in that: The heat dissipation mechanism (4) comprises a plurality of second soft tubes (41), the plurality of second soft tubes (41) being arranged at the other end of the bottom side of the grid plate (13), and one end of each second soft tube (41) being inserted into the guide groove (31) and fixedly connected to the grid plate (13), and the spacing between two adjacent second soft tubes (41) being equal, and two flaring grooves (42) being oppositely provided on the inner wall at the top of the enclosure (11), and the other end of each second soft tube (41) being inserted into the flaring groove (42) at one end and fixedly connected to the enclosure (11), and the flaring groove (42) being located above the square block (12).

5. The glass fiber reinforced plastic curing and forming device according to claim 4, characterized in that: A second flow guide shell (43) is fixedly mounted on the right side wall at the top of the enclosure (11), and the interior of the second flow guide shell (43) is connected to the interior of the flared groove (42) at the other end through a plurality of connection holes (44); an air pump (45) is fixedly mounted on the second flow guide shell (43), and the air inlet end of the air pump (45) is fixedly passed through the shell wall of the second flow guide shell (43); a second electrically controlled three-way valve (46) is connected and mounted on the exhaust end of the air pump (45); a connecting pipe (47) is connected and mounted on one exhaust end of the second electrically controlled three-way valve (46), and the exhaust end of the connecting pipe (47) is connected and mounted on the reflux air inlet end of the gas heating device (2); and an exhaust pipe (48) is connected and mounted on the other exhaust end of the second electrically controlled three-way valve (46).

6. The glass fiber reinforced plastic curing and forming device according to claim 5, characterized in that: The sealing mechanism (5) comprises a cover (51), the cover (51) being arranged above the enclosure (11), a soft ring (52) being fixedly mounted on the bottom side of the cover (51), and a limiting strip (513) being fixedly mounted at a middle position of the top side of the cover (51) where the bottom side of the soft ring (52) is connected to the top side of the enclosure (11).

7. The glass fiber reinforced plastic curing and forming device according to claim 6, characterized in that: Limiting grooves (53) are provided at the four corners of the soft ring (52) and the bottom side of the cover (51), and hemispherical blocks (54) are fixedly installed at the four corners of the top side of the enclosure (11), and the top of each hemispherical block (54) is inserted into the corresponding limiting groove (53).

8. The glass fiber reinforced plastic curing and forming device according to claim 7, characterized in that: A plurality of positioning grooves (55) are provided on the left and right side walls at the bottom of the grid plate (13), and the spacing between two adjacent positioning grooves (55) is equal. A positioning rod (56) is slidably installed at the position corresponding to the positioning groove (55) on the plate wall at the bottom of the enclosure (11), and one end of the positioning rod (56) is arranged in an inclined shape and inserted into the corresponding positioning groove (55). Two connecting rods (57) are arranged on the outer peripheral side of the enclosure (11), and each connecting rod (57) is fixedly connected to the corresponding positioning rod (56). A piston cylinder (58) is provided at the middle position between the connecting rod (57) and the enclosure (11), and the bottom of the piston cylinder (58) is fixedly connected to the enclosure (11). A piston rod (59) is slidably installed in the piston cylinder (58), and the driving end of the piston rod (59) extends to the outside of the corresponding piston cylinder (58) and is fixedly connected to the corresponding connecting rod (57).

9. The glass fiber reinforced plastic curing and forming device according to claim 8, characterized in that: A spring (510) is provided between the plug plate of the piston rod (59) and the inner wall of the corresponding piston cylinder (58), and the two ends of the spring (510) are respectively fixedly connected to the corresponding piston rod (59) and the inner wall of the corresponding piston cylinder (58). A pressure limiting valve (511) is connected and installed on the outer peripheral wall of the piston cylinder (58), and the exhaust ends of the two pressure limiting valves (511) are respectively connected to the interior of the corresponding second soft tube (41) and the interior of the second guide shell (43) through a conduit (512).

10. A method for curing and molding glass fiber reinforced plastics, comprising a glass fiber reinforced plastic curing and molding device according to any one of claims 1 to 9, characterized in that: The specific steps include: Step 1: The operator first removes the cover (51) from the mold (1), then pours the raw material into the mold (1), compacts the raw material, and then puts the cover (51) back on the mold (1) to close the top opening of the mold (1), and the raw material loading operation is completed; Step 2: After the loading operation of step 1 is completed, the air pump (45) is started to continuously extract the gas in the mold (1) and inject the gas into the gas heating device (2) for heating treatment, and then the hot gas flows back into the mold (1) through the first soft pipe (34), the guide groove (31), the second soft ring (52) and the expansion groove (42) to replenish the gas lost in the mold (1), and in the process of the hot gas passing through the mold (1) and the guide groove (31), the raw material and the gas quickly exchange heat to complete the heating and shaping treatment of the raw material, and form a glass fiber reinforced plastic grille with a specific shape; Step 3: After the heating and shaping of the raw materials in step 2 is completed, the gas heating device (2) stops running, the first electrically controlled three-way valve (32) is closed, and the second electrically controlled three-way valve (46) controls the exhaust end of the air pump (45) to be connected to the exhaust pipe (48). At this time, the air pump (45) extracts the harmful gas in the mold (1) and guides it to a specific position for discharge through the exhaust pipe (48). At the same time, the negative pressure intensity in the mold (1) gradually increases. At this time, part of the gas in the piston cylinder (58) passes through the pressure limiting valve. The valve (511) and the conduit (51) flow out of the piston cylinder (58), so that the negative pressure strength in the piston cylinder (58) is increased, thereby pulling the piston rod (59) out of the piston cylinder (58), and then pulling the positioning rod (56) out of the positioning groove (55) through the connecting rod (57) to release the constrained positioning state of the grid plate (13), and then the negative pressure cavity in the mold (1) pulls the grid plate (13) upward to push the glass fiber reinforced plastic grille out of the mold (1), thereby automatically completing the demoulding process of the glass fiber reinforced plastic grille; Step 4: After the air pump (45) in step 3 reaches a specific operating time, the first electrically controlled three-way valve (32) controls the first soft tube (34) to communicate with the outside, and the outside gas flows into the mold (1) through the first electrically controlled three-way valve (32), the first soft tube (34), the guide groove (31) and the expansion groove (42), so that the outside gas with a lower temperature continues to blow on the glass fiber reinforced plastic grille, quickly completing the cooling treatment of the glass fiber reinforced plastic grille, and at the same time, the residual harmful gas in the mold (1) is taken away by the airflow.

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