Glass fiber reinforced plastic grating centrifugal pouring device based on multiple mixing

Abstract

The invention relates to the technical field of centrifugal pouring, in particular to a glass fiber reinforced plastic grating centrifugal pouring device based on multiple mixing, which comprises a mounting cylinder, a mold is rotatably arranged in the mounting cylinder, a clamping assembly is arranged at the top end of the mounting cylinder, a pouring cylinder is arranged in the mold, and a storage barrel, a heating barrel and a mounting cavity are sequentially arranged at the bottom of the mounting cylinder from top to bottom. The storage barrel is filled with molten resin, one end of the pouring barrel penetrates through the bottom end of the mold to extend into the bottom of the storage barrel, the other end of the pouring barrel extends out of the top end of the mold and is rotationally connected with the clamping assembly, and the part, in the mold, of the pouring barrel is sequentially provided with a plurality of spraying assemblies from bottom to top; the multiple pouring pipes are evenly distributed around the circle center of the pouring cylinder and communicate with the pouring cylinder, the packing auger is arranged in the pouring cylinder, the continuous conveying and spraying process is formed through the packing auger and the pouring cylinder in the intermittent closing and opening state of the closed ring and the circulation hole, and the early-stage coating efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of centrifugal casting, in particular to a centrifugal casting device for a glass fiber reinforced plastic grating based on multiple mixing. Background Art

[0002] The grille is made by interlacing glass fibers and pouring resin into an integral mold. The mixed raw materials are fed into a steel mold fixed on a bearing, and an unsaturated resin with a catalyst is injected into one end of the mold to impregnate the reinforcing material. The centrifugal casting machine is started to rotate the mold under the action of centrifugal force. The resin displaces the air in the fibers and fillers under the action of centrifugal force to form a dense composite material without pores, which is then taken out and made into the corresponding grille.

[0003] However, the existing centrifugal casting device often casts the molten resin from a certain point during the casting process, and then evenly coats it on the reinforcing material under the action of centrifugation. However, the efficiency of this single-point casting is low, because the resin needs to rotate for a long time under a strong centrifugal force to ensure that the inner wall of the entire mold is coated with the resin material. If you want to ensure the uniformity of the entire product, you need to continue to rotate for a certain length of time to ensure the uniformity of the thickness of the material on the entire inner wall of the mold; however, if the material cannot be coated on the inner wall of the mold as soon as possible in the early coating stage, as the resin gradually cools down and solidifies, it will further increase the difficulty of centrifugal casting, thereby reducing the production efficiency of the product.

[0004] Based on this, the present invention discloses a centrifugal casting device for a glass fiber reinforced plastic grating based on multiple mixing. Summary of the invention

[0005] In order to solve the problems raised in the background technology, the purpose of the present invention is to provide a centrifugal casting device for fiberglass grating based on multiple mixing, which continuously pumps the resin melt in the storage barrel into the casting cylinder when the auger rotates, and during the rotation of the casting cylinder, the intermittent sealing and opening mechanism of the closed ring and the flow hole arranged inside it ensures that the resin melt can be evenly distributed to each injection component; secondly, each injection component includes a plurality of evenly distributed casting pipes, and a star-shaped dispersion port is arranged at the end of the casting pipe. The resin melt will be further diffused when it is sprayed out, increasing the injection radius. When the casting cylinder rotates, these casting pipes can form a uniform injection area on the inner wall of the mold, so as to achieve the purpose of improving the uniform coating in the early stage of centrifugal casting.

[0006] To achieve the above-mentioned purpose, a centrifugal casting device for a glass fiber reinforced plastic grating based on multiple mixing is provided, comprising a mounting cylinder, wherein the mounting cylinder is arranged on the ground; Among them, a mold is rotatably arranged in the mounting cylinder, a first driving device is symmetrically arranged on the mounting cylinder for driving the mold to rotate, a clamping assembly is arranged on the top of the mounting cylinder, a pouring cylinder is arranged in the mold, and a storage barrel, a heating barrel and a mounting cavity are arranged in sequence from top to bottom at the bottom of the mounting cylinder, the storage barrel is filled with resin melt, one end of the pouring cylinder passes through the bottom of the mold and penetrates into the bottom of the storage barrel, and the other end extends to the outside of the top of the mold and is rotatably connected with the clamping assembly, a first bevel gear driving assembly is arranged on the mounting cylinder for driving the pouring cylinder to rotate, and a portion of the pouring cylinder in the mold is sequentially provided with a plurality of groups of injection assemblies from bottom to top, the injection assembly includes a plurality of pouring tubes, and the plurality of pouring tubes are evenly distributed around the center of the pouring cylinder and are connected to the pouring cylinder, an auger is arranged in the pouring cylinder for pumping resin melt from the storage barrel, and a second bevel gear driving assembly is arranged at the bottom of the mounting cylinder for driving the auger to rotate.

[0007] As a further improvement of the present technical solution, driving ports are symmetrically opened on both sides of the mounting tube, a mounting ring is fixedly connected to the inner wall of the mounting tube, a driving ring is fixedly connected to the outer wall of the mold, the driving ring is fitted with the driving wheel of the first driving device through the driving port, the driving ring is rotatably connected to the mounting ring, and the driving ring and the mounting ring are detachable.

[0008] As a further improvement of the present technical solution, a rotating bearing is fixedly connected to the top of the casting cylinder, and the clamping assembly includes a fixing frame symmetrically arranged on both sides of the top of the mounting cylinder, one end of the fixing frame is rotatably connected to the mounting cylinder, and the other end is fixedly connected to a fixing hoop, the circle formed by the two fixing hoops is adapted to the periphery of the rotating bearing, and the two fixing hoops are detachably connected.

[0009] As a further improvement of the technical solution, a first bevel gear drive assembly is provided on the pouring cylinder between the bottom end of the mold and the top end of the storage barrel, and a drive device of the first bevel gear drive assembly is fixedly arranged outside the mounting cylinder.

[0010] Preferably, a heating tube is fixedly provided in the heating barrel for heating the resin melt in the storage barrel.

[0011] As a further improvement of the present technical solution, the top end of the auger is fitted with the inner wall of the top end of the pouring cylinder, and a bearing for reducing friction is fixedly connected to the top end of the auger, the bottom end of the auger passes through the heating barrel and is exposed in the bottom end of the mounting barrel, and a second bevel gear drive assembly is provided at the end of the auger exposed in the bottom end of the mounting barrel, and a drive device of the second bevel gear drive assembly is fixed outside the mounting barrel, and the auger is rotatably connected to the storage barrel through a sealed bearing.

[0012] Preferably, a flow hole is opened at the connection between the pouring cylinder and the pouring pipe, and a closed ring corresponding to the flow hole one by one is fixedly connected to the auger. The closed ring has an arc-shaped structure and is adapted to the inner wall of the pouring cylinder. In an initial state, the closed ring fits with the flow hole to block the flow hole.

[0013] As a further improvement of the present technical solution, a dispersion port is provided at the nozzle of the pouring tube at one end away from the pouring cylinder. The dispersion port is in a star-shaped structure, and an inclined groove inclined toward the axis of the pouring tube is provided at one corner of each star for dispersing the molten resin. The length of the pouring tube is smaller than the radius of the inner wall of the mold after the reinforcing material and resin are coated.

[0014] Preferably, the rotation direction of the pouring cylinder is opposite to that of the auger, and the rotation direction of the mold is the same as that of the pouring cylinder.

[0015] As a further improvement of the technical solution, the storage barrel is connected to a pouring port, and the pouring port is fixedly connected to the outside of the mounting tube.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the centrifugal casting device of FRP grating based on multiple mixing, the resin melt in the storage barrel is pumped by the rotation of the auger in the casting barrel. The pumping action of the auger combined with the rotation of the casting barrel is conducive to the continuous and stable distribution of the resin melt in the casting barrel, thereby realizing the continuous and stable transportation of the resin melt from the bottom to the top of the casting barrel, providing sufficient material source for subsequent multi-point injection; secondly, the intermittent sealing of the closed ring and the flow hole, the closed ring fixed on the auger and the flow hole on the casting barrel form an intermittent seal during the rotation process: When the closed ring fits the flow hole, a closed space is formed to ensure the pressure accumulation of the resin melt in the casting cylinder; When the closed loop is separated from the flow hole, the resin melt enters the injection assembly through the flow hole, which is conducive to the fixed-point and quantitative injection of the resin melt; thereby solving the problem of low coating efficiency caused by the traditional single pouring point and improving the uniformity and efficiency of coating.

[0017] 2. In the centrifugal casting device of the fiberglass grating based on multiple mixing, a multi-point injection assembly is used, and several groups of casting pipes are arranged in the casting cylinder, which are evenly distributed around the center of the casting cylinder. The multi-point injection effect of the injection assembly is conducive to evenly spraying the resin melt onto the inner wall of the mold, thereby realizing rapid and uniform coating of the inner wall of the mold and shortening the first stage time of centrifugal casting; secondly, the heating pipe in the heating barrel heats the resin melt in the storage barrel, which is conducive to maintaining the molten state of the resin melt and preventing it from solidifying due to heat dissipation during the casting process, thereby ensuring the fluidity and uniformity of the resin melt during the injection process and improving the coating quality.

[0018] 3. In the centrifugal casting device of FRP grating based on multiple mixing, the detachability of the mold and the casting barrel is realized. Both the mold and the casting barrel are designed as detachable structures, which are convenient for maintenance and replacement. The detachability is conducive to the flexible use and long-term maintenance of the equipment, reduces the use cost, and thus improves the reliability and service life of the equipment; secondly, the rotation direction of the casting barrel is opposite to that of the auger, which is conducive to the pumping and centrifugal distribution of the resin melt in the casting barrel. The rotation direction of the casting barrel is the same as that of the mold, which is conducive to the uniform coating of the resin melt on the inner wall of the mold. The optimization of the rotation direction improves the conveying efficiency and coating quality of the resin melt, and further shortens the time of centrifugal casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural front view of the overall structure of the present invention; Figure 3 It is a structural cross-sectional view of the installation tube of the present invention; Figure 4 for Figure 3 A magnified view of the structure at center A; Figure 5 for Figure 3 A magnified view of the structure at B in the middle; Figure 6 for Figure 3 A magnified view of the structure at C in the middle; Figure 7 It is a structural explosion diagram of the pouring tube of the present invention; Figure 8 It is a structural cross-sectional view of the pouring tube of the present invention; Fig. 9 for Figure 8 A magnified view of the structure at D in the middle; Fig.10 It is a schematic diagram of the local structure of the pouring tube of the present invention.

[0020] The meaning of each number in the figure is: 1. Mounting cylinder; 2. Driving port; 3. Mounting ring; 4. Mold; 5. Driving ring; 6. First driving device; 7. Pouring cylinder; 8. Pouring tube; 9. Rotating bearing; 10. Fixed frame; 11. Fixed hoop; 12. First bevel gear driving assembly; 13. Storage barrel; 14. Heating barrel; 15. Heating tube; 16. Second bevel gear driving assembly; 17. Pouring port; 18. Auger; 19. Closing ring; 20. Flow hole; 21. Dispersion port. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The existing centrifugal casting device has the problem of casting at a single point during the casting process, resulting in a relatively long centrifugal effect for uniform coating.

[0023] For this purpose, the present invention provides a centrifugal casting device for glass fiber reinforced plastic grating based on multiple mixing, see Figure 1 As shown, it comprises a mounting tube 1 which is arranged on the ground.

[0024] Specifically, a mold 4 is rotatably arranged in the mounting cylinder 1, a first driving device 6 is symmetrically arranged on the mounting cylinder 1 for driving the mold 4 to rotate, a clamping assembly is arranged at the top of the mounting cylinder 1, a pouring cylinder 7 is arranged in the mold 4, a storage barrel 13, a hot barrel 14 and a mounting cavity are arranged at the bottom of the mounting cylinder 1 from top to bottom, the storage barrel 13 is full of molten resin, one end of the pouring cylinder 7 passes through the bottom end of the mold 4 and penetrates into the bottom of the storage barrel 13, and the other end extends to the outside of the top of the mold 4 and is rotatably connected with the clamping assembly, a first bevel gear driving assembly 12 is arranged on the mounting cylinder 1 for driving the pouring cylinder 7 to rotate, a portion of the pouring cylinder 7 in the mold 4 is arranged with a plurality of groups of injection assemblies from bottom to top, the injection assembly includes a plurality of pouring pipes 8, the plurality of pouring pipes 8 are evenly distributed around the center of the pouring cylinder 7, and are connected to the pouring cylinder 7, an auger 18 is arranged in the pouring cylinder 7 for pumping molten resin from the storage barrel 13, and a second bevel gear driving assembly 16 is arranged at the bottom of the mounting cylinder 1 for driving the auger 18 to rotate.

[0025] It can be seen that the resin melt in the storage barrel 13 is pumped by the auger 18 arranged in the pouring cylinder 7, and then the pouring cylinder 7 is centrifugally rotated and then evenly sprayed on the inner wall of the mold 4 through several groups of injection assemblies, which is equivalent to dividing the original length of the mold 4 into several parts, and then feeding it in several parts by a group of injection assemblies, and the injection assembly is still divided into several pouring tubes 8 to spray the inner wall of the mold 4, so that the first stage of centrifugal pouring of the entire mold 4 can be greatly shortened, that is, the material is first coated on the inner wall surface of the mold 4 as evenly as possible; secondly, the material in the storage barrel 13 is heated again by the heating barrel 14, so that it always remains in a molten state when it is ejected from the injection assembly, so that the heat energy of the material can be prevented from being dissipated due to centrifugal effects during the pouring process, which makes the later stages of centrifugation difficult.

[0026] The specific structure of the present invention is disclosed below. First, how the mold 4 works is described. The structure is that drive ports 2 are symmetrically opened on both sides of the mounting cylinder 1, a mounting ring 3 is fixedly connected to the inner wall of the mounting cylinder 1, and a drive ring 5 is fixedly connected to the outer wall of the mold 4. The drive ring 5 fits with the driving wheel of the first driving device 6 through the drive port 2, and the drive ring 5 is rotatably connected to the mounting ring 3, and the drive ring 5 and the mounting ring 3 are detachable; that is, the mold 4 rotates by friction or engagement between the drive ring 5 and the driving wheel of the first driving device 6, and the drive ring 5 is supported and fixed by the mounting ring 3 in the mounting cylinder 1, that is, the entire mold 4 is supported and fixed by the mounting ring 3, and a ball or a slider (not shown in the figure) is provided at the bottom end of the drive ring 5 to reduce friction, and at the same time, grooves are provided on both sides of the mounting ring 3, so that the drive ring 5 of the mold 4 can be inserted therein and slide in the grooves to ensure its stability during rotation, and at the same time, the detachability of the mold 4 can be ensured.

[0027] Secondly, a heating tube 15 is fixedly provided in the heating barrel 14 for heating the resin melt in the storage barrel 13; and a rotating bearing 9 is fixedly connected to the top of the casting barrel 7, and the clamping assembly includes a fixing frame 10 symmetrically arranged on both sides of the top of the mounting barrel 1, one end of the fixing frame 10 is rotatably connected to the mounting barrel 1, and the other end is fixedly connected to a fixing hoop 11, and the circle formed by the two fixing hoops 11 is adapted to the periphery of the rotating bearing 9, and the two fixing hoops 11 are detachably connected, and the matching mold 4 is divided into an upper cover, a lower cover and a main body, and the upper cover and the lower cover are detachably connected to the main body, and the main body is a cylindrical structure; it can be concluded that the entire casting barrel 7 can be smoothly taken out for maintenance and other operations by opening the two fixing hoops 11 to fix the rotating bearing 9, and the casting barrel 7 itself is constantly rotating, and the heating tube 15 reheats the resin, so there is almost no clogging problem in the injection assembly, but if a problem is encountered, by Figure 7As shown, the pouring tube 7 can also be taken out for maintenance; and when it needs to be inserted back for work, after the mold 4 is first placed in the installation tube 1 and fixed, the entire pouring tube 7 can be placed in, and when the pouring tube 7 is placed in a horizontal state with the fixing hoop 11, the two fixing hoops 11 can be tightened to fix the fixing hoop 11 to the rotating bearing 9 on the pouring tube 7, and then the rotation of the pouring tube 7 can be guaranteed under the action of the rotating bearing 9, so that the pouring tube 7 can be disassembled and maintained at any time, and can cooperate with the later maintenance; as for the driving of the pouring tube 7, it is completed by the first bevel gear driving assembly 12 arranged on the pouring tube 7 between the bottom end of the mold 4 and the top end of the storage barrel 13, which is driven by Figure 4 and Figure 8 It can be seen that the driving device of the first bevel gear driving assembly 12 is fixed outside the mounting tube 1, and the present invention uses a bevel gear structure for driving, that is, a bevel gear is fixed to the bottom end of the pouring tube 7, so that after the pouring tube 7 is fixed by the fixing hoop 11, the bevel gear on the pouring tube 7 is meshed with the bevel gear on the output shaft of the driving device in the first bevel gear driving assembly 12, that is, it can drive the rotation of the entire pouring tube 7. Such a setting can not only ensure the independent rotation of the pouring tube 7, but also avoid damage to the driving device caused by overheating inside the mounting tube 1. Moreover, the gear structure used for the connecting component is more suitable in terms of heat resistance, stability and convenient disassembly and installation of the meshing structure.

[0028] Furthermore, the top of the auger 18 fits with the top inner wall of the pouring tube 7, and a bearing for reducing friction is fixedly connected to the top of the auger 18, the bottom end of the auger 18 passes through the heating barrel 14 and is exposed in the bottom end of the mounting barrel 1, and the end of the auger 18 exposed in the bottom end of the mounting barrel 1 is provided with a second bevel gear drive assembly 16, the driving device of the second bevel gear drive assembly 16 is fixedly arranged outside the mounting barrel 1, and the auger 18 is rotatably connected to the storage barrel 13 through a sealed bearing; that is, the auger 18 is fixed in the mounting barrel 1, but is rotatably connected to the storage barrel 13 through a sealed bearing, which can ensure the rotation of the auger 18 and the sealing of the molten material in the storage barrel 13, and it should be noted that the storage barrel 13 is connected with a pouring port 17, the pouring port 17 is fixedly connected to the outside of the mounting barrel 1, and the material is poured into the storage barrel 13 through the pouring port 17, and at the same time, the bottom end of the casting barrel 7 is deep into the bottom of the storage barrel 13, and the spiral structure of the auger 18 is also the pouring barrel 7 The bottom end is flush with each other, so that the material in the storage barrel 13 can be delivered into the casting tube 7 as much as possible. However, due to the gap at the bottom, the material added must take into account the loss of this part, so it is necessary to add more part, and this amount is calculated according to the distance between the bottom wall of the storage barrel 13 and the bottom end of the casting tube 7. However, the presence of the heating tube 15 can ensure that the remaining material always remains in a molten state, so it can be recycled, and there is no need to consider this part of the residue when adding it next time; at the same time, when the casting tube 7 is sleeved on the auger 18, the contact area with the top of the auger 18 is supported by the bearing, so that the stability of the auger 18 during rotation can be guaranteed, and the bottom end of the auger 18 is driven by the same transmission structure as the first bevel gear drive assembly 12, except that the entire second bevel gear drive assembly 16 is fixedly arranged, but the drive device of the second bevel gear drive assembly 16 is still placed outside the mounting tube 1, that is, the safety of the drive device is guaranteed.

[0029] Furthermore, a flow hole 20 is provided at the connection between the pouring cylinder 7 and the pouring pipe 8, and a closed ring 19 corresponding to the flow hole 20 is fixedly connected to the auger 18. The closed ring 19 has an arc-shaped structure and is adapted to the inner wall of the pouring cylinder 7. In the initial state, the closed ring 19 fits with the flow hole 20 to block the flow hole 20. It can be concluded that the auger 18 drives a plurality of closed rings 19 to rotate. When the closed ring 19 is always in a state of fitting and sealing with the flow hole 20 during the rotation process, combined with the bottom of the pouring cylinder 7 penetrating into the resin melt, a closed space is formed in the entire pouring cylinder 7, and the resin melt is continuously pumped from the bottom of the storage barrel 13 into the pouring cylinder 7, and then It is continuously transmitted to various positions of the casting tube 7, and then when the closed ring 19 rotates to a gap separated from the circulation hole 20, it can ensure that several groups of injection components, that is, several casting tubes 8 can obtain the resin melt in a centrifugal manner through the circulation hole 20, so that it can be evenly sprayed to the inner wall of the mold 4 through the casting tube 8; thereby, it can be ensured that each group of injection components can always have material sprayed out, and the problem of low efficiency in the coating stage caused by the traditional single pouring point is solved, that is, through the intermittent sealing of the closed ring 19 and the circulation hole 20, the entire casting tube 7 obtains the upward pressure, and then the closed ring 19 and the circulation hole 20 intermittently form a through port, so that each casting tube 8 can rotate when the casting tube 7 The resin melt is obtained under the action of centrifugal force and then thrown out through the pouring pipe 8, which can ensure that the parts separated by several groups of injection components in the mold 4 are evenly sprayed with the resin melt, and can solve the problem of difficulty in transferring the resin melt in the pouring tube 7 due to the lack of sealing; the present invention is only carried out for the condition of pouring in the vertical mold 4, and for the horizontal pouring tube 7, it can be determined whether to use the auger 18 in combination with the closed ring 19 according to the size of the product to be poured, because if the product requires less material, then the auger 18 and the closed ring 19 are still needed to ensure that several groups of injection components can be sprayed as evenly as possible, because if the required material is less, then the pouring may be Before the material in the barrel 7 flows into the other end of the pouring barrel 7, the material in the barrel 7 is sprayed by several groups of spraying assemblies near the pouring port 17, which will cause uneven spraying. However, even if more materials are required, it is still more beneficial to use the auger 18 of the present invention in conjunction with the closed ring 19, because at the beginning and end of the pouring stage, the material in the barrel 7 will not be completely filled, and then the fluidity of the material will cause uneven spraying of each spraying assembly, affecting the coating efficiency. Because the present invention can form a transmission unit through the spacing of the spiral structure of the auger 18, so as to ensure that each unit has melt that can be sprayed by the spray assembly during the continuous transmission process;Because the auger 18 is not in contact with the inner wall of the pouring tube 7, if the melt far from the end of the pouring tube 7 is not completely thrown out, it will feed back to other conveying units under the condition of continuous conveying, so that each conveying unit can be ensured to be always filled with melt. ;

[0030] It is worth mentioning that the nozzle of the pouring pipe 8 away from the pouring cylinder 7 is provided with a dispersion port 21, see Fig.10 As shown, the dispersion port 21 is in a star-shaped structure, and a slant groove inclined toward the axis of the casting tube 8 is opened at one corner of each star shape to disperse the resin melt. That is, through the several blood grooves of this star-shaped structure, the resin melt sprayed from the end of the casting tube 8 can be sprayed with a radius as large as possible, which further increases the coating efficiency; and the length of the casting tube 8 is less than the radius after the inner wall of the mold 4 is coated with the reinforcing material and resin. In this way, the end of the casting tube 8 can be as close to the coating layer of the mold 4 as possible without affecting the thickness of the entire product after completion, and at the same time, a sufficiently large centrifugal force can be obtained. Then, relying on the diffusion function of the dispersion port 21, a group of injection components can ensure that the part of the ring of the mold 4 corresponding to a group of injection components is coated with the resin melt as much as possible after rotating one circle. That is to say, the present invention cleverly divides the mold 4 into several sections, and then cooperates with several groups of injection components to form a plurality of sections. The injection of the parts is completed to improve the efficiency of the early coating, and then further rotate the centrifuge to ensure the uniformity of the product thickness; at the same time, the rotation direction of the casting tube 7 is opposite to that of the auger 18, and the rotation direction of the mold 4 is the same as that of the casting tube 7; firstly, for the casting tube 7 and the auger 18, their rotation directions are opposite, which can allow the melt in the casting tube 7 to obtain the pumping force as much as possible without affecting the centrifugal force of the melt, because if the casting tube 7 and the auger 18 have the same rotation direction, the relative speed between the melt and the inner wall of the casting tube 7 will be reduced, so for the melt, its rotational centrifugal force and the pumping force of the auger 18 will be affected; secondly, for the casting tube 7 and the mold 4, if their rotation directions are opposite, for the sprayed melt, it has a tangential centrifugal force, so when it hits the inner wall of the mold 4, it will cause the tangential force to offset, thereby greatly reducing the centrifugal force of the melt.

[0031] It should be added that the mold 4 is divided into an upper cover, a lower cover and a main body, and the upper cover and the lower cover are detachably connected to the main body, and the main body is a cylindrical structure, so that after the product is poured, the clamping assembly is opened, and then the upper cover is opened, and the entire pouring tube 7 is taken out for maintenance, and then the entire mold 4 is taken out, and then the lower cover is taken out, and then demoulding is performed through existing mature technology; and it should be noted that the entire mold 4 is made of a material that will not adhere to the material of the product in the molten state; and there are corresponding sealing and protection measures at the separation of the upper cover and the lower cover from the main body; in addition, there are corresponding protection measures at the junction of the lower cover and the pouring tube 7 to prevent the splashing of materials from causing damage to the first bevel gear drive assembly 12 (the proportions of the first bevel gear drive assembly 12 and the second bevel gear drive assembly 16 in the figure are not used as a reference in actual production, but only as a reference in terms of overall function and position relationship).

[0032] In addition, for the multiple parts divided by the pouring tube 7 by several groups of injection components, any part is equivalent to having a complete pouring point, so that when the pouring tube 8 sprays material onto the inner wall of the main body of the mold 4, the material will begin to climb along the inner wall of the main body under the action of centrifugal force until all places on the inner wall of the pouring tube 7 are coated, which quickly completes the early coating stage, and then continues to disperse under the action of centrifugal force. If there are unevenly distributed places on the inner wall, take the thicker places as an example, according to the decomposition of force, it can be seen that there will be a force that is decomposed to drive the material to move toward the lower place, so that the uniformity of the product will be guaranteed in the end.

[0033] In summary, the resin melt is added through the pouring port 17, and then through the cooperation of the auger 18 and the pouring tube 7, a continuous conveying and spraying process is formed under the intermittent closure and opening state of the closed ring 19 and the flow hole 20, and then the mold 4 is divided into several sections in combination with the injection assembly, and several pouring pipes 8 spray each section evenly at the same time, thereby improving the early coating efficiency, and effectively solving the problem that the existing centrifugal casting device performs casting at a single point during the casting process, resulting in a long period of centrifugal action for uniform coating.

[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 by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A centrifugal casting device for a glass fiber reinforced plastic grating based on multiple mixing, comprising a mounting cylinder (1), wherein the mounting cylinder (1) is arranged on the ground, and is characterized in that: A mold (4) is rotatably arranged in the installation cylinder (1). A first driving device (6) is symmetrically arranged on the installation cylinder (1). The first driving device (6) is used to drive the mold (4) to rotate. A clamping assembly is arranged at the top of the installation cylinder (1). A pouring cylinder (7) is arranged in the mold (4). A storage barrel (13), a heating barrel (14) and an installation cavity are arranged in sequence at the bottom of the installation cylinder (1) from top to bottom. The storage barrel (13) is filled with resin melt. One end of the pouring cylinder (7) passes through the bottom of the mold (4) and penetrates into the bottom of the storage barrel (13). The other end of the pouring cylinder (7) extends to the outside of the top of the mold (4) and is rotatably connected to the clamping assembly. A first driving device (6) is arranged on the installation cylinder (1). A bevel gear drive assembly (12), wherein the first bevel gear drive assembly (12) is used to drive the casting cylinder (7) to rotate, and the portion of the casting cylinder (7) inside the mold (4) is provided with a plurality of groups of injection assemblies in sequence from bottom to top, and the injection assemblies include a plurality of casting tubes (8), and the plurality of casting tubes (8) are evenly distributed around the center of the casting cylinder (7) and are connected to the casting cylinder (7). An auger (18) is provided inside the casting cylinder (7), and the auger (18) is used to pump resin melt from a storage barrel (13). A second bevel gear drive assembly (16) is provided at the bottom end of the mounting cylinder (1), and the second bevel gear drive assembly (16) is used to drive the auger (18) to rotate.

2. The centrifugal casting device for glass fiber reinforced plastic grating based on multiple mixing according to claim 1 is characterized in that: The mounting tube (1) is symmetrically provided with driving openings (2), the inner wall of the mounting tube (1) is fixedly connected with a mounting ring (3), the outer wall of the mold (4) is fixedly connected with a driving ring (5), the driving ring (5) is fitted with a driving wheel of the first driving device (6) through the driving opening (2), the driving ring (5) is rotatably connected with the mounting ring (3), and the driving ring (5) and the mounting ring (3) are detachable.

3. The centrifugal casting device for glass fiber reinforced plastic grating based on multiple mixing according to claim 1 is characterized in that: The top end of the pouring cylinder (7) is fixedly connected to a rotary bearing (9), and the clamping assembly comprises a fixing frame (10) symmetrically arranged on both sides of the top end of the mounting cylinder (1), one end of the fixing frame (10) is rotatably connected to the mounting cylinder (1), and the other end is fixedly connected to a fixing hoop (11), the circle formed by the two fixing hoops (11) is adapted to the periphery of the rotary bearing (9), and the two fixing hoops (11) are detachably connected.

4. The centrifugal casting device for glass fiber reinforced plastic grating based on multiple mixing according to claim 3 is characterized in that: A first bevel gear drive assembly (12) is provided on the pouring cylinder (7) between the bottom end of the mold (4) and the top end of the storage barrel (13), and a drive device of the first bevel gear drive assembly (12) is fixedly mounted outside the mounting cylinder (1).

5. The centrifugal casting device for glass fiber reinforced plastic grating based on multiple mixing according to claim 1 is characterized in that: A heating tube (15) is fixedly arranged in the heating barrel (14), and the heating tube (15) is used to heat the resin melt in the storage barrel (13).

6. The centrifugal casting device for glass fiber reinforced plastic grating based on multiple mixing according to claim 4 is characterized in that: The top end of the auger (18) fits against the inner wall of the top end of the pouring cylinder (7), and a bearing for reducing friction is fixedly connected to the top end of the auger (18). The bottom end of the auger (18) passes through the heating barrel (14) and is exposed inside the bottom end of the mounting barrel (1), and a second bevel gear drive assembly (16) is provided at one end of the auger (18) exposed inside the bottom end of the mounting barrel (1). The drive device of the second bevel gear drive assembly (16) is fixed outside the mounting barrel (1), and the auger (18) is rotatably connected to the storage barrel (13) via a sealed bearing.

7. The centrifugal casting device for glass fiber reinforced plastic grating based on multiple mixing according to claim 6 is characterized in that: A flow hole (20) is provided at the connection point between the pouring cylinder (7) and the pouring pipe (8), and a closed ring (19) corresponding to each of the flow holes (20) is fixedly connected to the auger (18). The closed ring (19) has an arc-shaped structure and is adapted to the inner wall of the pouring cylinder (7). In an initial state, the closed ring (19) fits the flow hole (20) to block the flow hole (20).

8. The centrifugal casting device for glass fiber reinforced plastic grating based on multiple mixing according to claim 7 is characterized in that: The nozzle of the pouring tube (8) at one end away from the pouring cylinder (7) is provided with a dispersion port (21), the dispersion port (21) is in a star-shaped structure, and each corner of the star is provided with an inclined groove inclined toward the axis of the pouring tube (8), the inclined groove is used to disperse the resin melt, and the length of the pouring tube (8) is less than the radius of the inner wall of the mold (4) after the reinforcing material and the resin are coated.

9. The centrifugal casting device for glass fiber reinforced plastic grating based on multiple mixing according to claim 1 is characterized in that: The rotation direction of the pouring cylinder (7) is opposite to that of the auger (18), and the rotation direction of the mold (4) is the same as that of the pouring cylinder (7).

10. The centrifugal casting device for glass fiber reinforced plastic grating based on multiple mixing according to claim 1, characterized in that: The storage barrel (13) is connected to a pouring port (17), and the pouring port (17) is fixedly connected to the outside of the installation cylinder (1).

Images