A resin-based composite forming apparatus, a tiebar, and a method of use

Abstract

The present application belongs to the technical field of resin-based composite material manufacturing, and particularly relates to a resin-based composite material forming device, a sleeper and a use method. The device comprises a cavity, a plurality of driving mechanisms, a cavity support mechanism and a main traction mechanism. The cavity is formed by a plurality of flexible belts. Each driving mechanism corresponds to a flexible belt. Each driving mechanism comprises a driving wheel, a tensioning wheel and a motor drivingly connected with the driving wheel. The driving wheel and the tensioning wheel are respectively located at two ends of the cavity. Each driving wheel drives the corresponding flexible belt to run. Each tensioning wheel is rotationally connected with the corresponding flexible belt. The cavity support mechanism comprises a plurality of support plates with sliding surfaces and linear driving assemblies connected with the support plates. Each support plate is in close contact with and slidingly connected with the corresponding flexible belt. The problems of easy glue leakage, better cavity sealing, easy displacement of the stop block, poor bolt fixation and more accurate cavity size positioning are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of resin-based composite material manufacturing, and particularly relates to a resin-based composite material forming device, a sleeper and a use method. Background Art

[0002] Resin-based composites are materials composed of a resin matrix and reinforcements. The matrix resins typically include polyurethane, epoxy, polyimide, and phenolic resins, while reinforcements include carbon fiber, glass fiber, and aramid fiber. Resin-based composites offer advantages such as high strength, high stiffness, low density, and excellent corrosion and fatigue resistance. They are widely used in aerospace, automotive, shipbuilding, construction, sports equipment, electronics, and other fields.

[0003] Polyurethane foam synthetic sleepers are made from continuous glass fiber or carbon fiber as reinforcement, polyurethane as the matrix material, and additives, using a pultrusion foaming process. The production process involves spraying the mixed polyurethane resin onto the yarn, soaking it in the resin, and then placing it in a laminating pultruder for foaming.

[0004] like Figure 1 and Figure 2 As shown, the traditional laminating pultrusion equipment (existing resin-based composite material molding device) is both a molding mold and a traction device. Its structure adopts an upper crawler 1.2, a lower crawler 1.1, and left and right stoppers 1.3. The left and right stoppers 1.3 are fixed to the lower crawler 1.1, and the upper crawler 1.2 can be adjusted up and down. For different product sizes, the left and right stoppers 1.3 need to be replaced with corresponding sizes. The traditional laminating machine structure has the following problems:

[0005] (1) The changeover cycle is too long: Since a single track can be more than 60 meters long, and each block is 0.24 meters long, the specific installation method of the block and the lower track is: the lower track is equipped with a threaded hole, and the block is a through hole. To facilitate installation, the through hole is generally 2-3 mm larger than the threaded hole. Therefore, when the bolt is used to fix the block, the side block and the bolt are in a clearance fit. The track is about 60 meters long, and the number of blocks required on one side is as many as 250. When installing adjacent blocks, misalignment deviation is easy to occur, and straightness calibration is required, which is time-consuming. The general replacement cycle takes at least 7 days. In addition, the sizes of polyurethane foam synthetic sleepers are complicated, with more than 10 conventional sizes, which brings great inconvenience to production and delivery.

[0006] (2) The cavity is prone to glue leakage: it is difficult for adjacent blocks to fit completely together, and the gap in the middle is prone to glue leakage and flash, which makes it difficult to demould the product and causes surface tearing;

[0007] (3) Block displacement: The expansion pressure of polyurethane foam in the cavity can be as high as 0.2MPa-0.3MPa. Corresponding to a block area of ​​0.24m*0.24m, the foaming pressure on the block can be as high as 17.28kN. The block is fixed by two bolts, and the mounting holes on the block are easily deformed by the bolt shear, causing the block to shift and deviate.

[0008] (4) Insufficient equipment power: The maximum pressure of polyurethane foaming in the cavity can reach 0.2MPa-0.3MPa; at the same time, the maximum model size of the integral polyurethane foam synthetic sleeper can have more than 5,000 yarns (9,600Tex). The traditional laminating pultrusion machine is both a forming mold and a traction device, and the equipment is prone to insufficient traction power. Summary of the Invention

[0009] The technical problem to be solved by the present invention is to provide a resin-based composite material forming device, a rail sleeper and a method of use. The device has a reasonable structure, is easy to use, is not easy to be misaligned, has high straightness, and is not easy to cause glue to run and flash.

[0010] The present invention provides a resin-based composite material forming device, comprising:

[0011] A mold cavity, wherein the mold cavity is surrounded by a plurality of flexible strips;

[0012] Multiple driving mechanisms, each of which corresponds to a flexible belt, each of which includes a driving wheel, a tensioning wheel, and a motor drivingly connected to the driving wheel, the driving wheel and the tensioning wheel are respectively located at both ends of the cavity, each driving wheel drives the corresponding flexible belt to operate, and each tensioning wheel is rotationally connected to the corresponding flexible belt;

[0013] A cavity support mechanism, comprising a plurality of support plates having sliding surfaces and a linear drive assembly connected to the support plates, wherein the plurality of support plates surround the cavity, and each support plate is in contact with and slidably engages with a corresponding flexible belt; and

[0014] The main traction mechanism is arranged at the outlet end of the cavity and is used for connecting and pulling the resin-based composite material.

[0015] Optionally, the mold further comprises a cavity positioning mechanism, the cavity positioning mechanism comprising a plurality of front-end positioning rollers and a plurality of rear-end positioning rollers, wherein the front-end positioning rollers and the rear-end positioning rollers are grouped in pairs and abut against and rollably connected to the surface of a flexible belt;

[0016] The support plate is arranged between the front end positioning roller and the rear end positioning roller. The linear drive assembly connected to each support plate is rigidly connected to the front end positioning roller and the rear end positioning roller corresponding to the two ends of the support plate; at least one flexible belt corresponding drive mechanism is drive-connected to the linear drive assembly.

[0017] Optionally, the cavity support mechanism further includes a plurality of limiting members, wherein the limiting members are drivingly connected to the linear drive assembly, and the limiting members are embeddedly slidably connected to the flexible belt.

[0018] Optionally, one side edge in the width direction of each flexible belt is in contact with the surface of an adjacent flexible belt.

[0019] Optionally, a heating plate is provided inside the support plate or on the side facing away from the flexible belt.

[0020] Optionally, each driving mechanism further includes a linear drive 1, wherein the output end of the linear drive 1 is centrally connected to the rotating shaft of the tensioning wheel for controlling the tension of the flexible belt.

[0021] Optionally, the flexible strip is a carbon steel strip, a stainless steel strip, a nickel-based alloy strip, an aluminum alloy strip, a titanium alloy strip or a copper alloy strip.

[0022] Optionally, the main traction mechanism includes a support frame and at least one clamping assembly that moves linearly back and forth along the support frame, and the clamping assembly includes a fixing plate, a clamping plate and a linear driver 2 that drives the clamping plate to move linearly back and forth.

[0023] The present invention provides a rail sleeper, which is manufactured using the resin-based composite material forming device.

[0024] The present invention provides a method for using a resin-based composite material forming device, comprising the following steps:

[0025] First, the tension of the flexible belt is adjusted by the tensioning wheel, and the rotation of all flexible belts is driven by the rotation of the driving wheel;

[0026] The yarn soaked in resin enters the cavity and foams and extrude at the same time. When the flexible belt transports the product to the position set by the main traction mechanism, the main traction mechanism bears most of the conveying force, and the driving wheel of the cavity part plays an auxiliary traction role.

[0027] The beneficial effect of the present invention is that the resin-based composite material molding device provided by the present invention, the yarn soaked with resin enters the mold cavity, and since the mold cavity is formed by a plurality of flexible belts, the inner wall of the mold cavity can be made flat and smooth, and the contact parts of adjacent flexible belts can fit tightly, and the support plate of the mold cavity support mechanism offsets the resin expansion force, thereby ensuring the stability of the mold cavity structure, thereby avoiding the gaps between the track plates and between the blocks in the prior art, and it is less likely to cause glue running and flash. The surface of the flexible belt is smoother and demolding is smoother. The mold cavity structure enclosed by a plurality of flexible belts does not require blocks, which can solve the problems of loose bolt fixation and block displacement, and ensures sufficiently high straightness; moreover, the motors of the multiple drive mechanisms synchronously rotate the drive wheels to drive the multiple flexible belts to operate, and then cooperate with the main traction mechanism to pull the molded resin-based composite material out of the mold cavity more effortlessly.

[0028] This method of use only requires adjusting the tension of the flexible belt through the tensioning wheel to form a cavity, and cooperates with the main traction mechanism to pull out the product. The operation is simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of traditional lamination pultrusion equipment;

[0030] Figure 2 Schematic diagram of the cavity structure of traditional laminated pultrusion equipment;

[0031] Figure 3 A schematic structural diagram of a resin-based composite material forming device provided in an embodiment of the present invention;

[0032] Figure 4 A schematic diagram of the three-dimensional structure of the mold cavity and the driving mechanism provided in an embodiment of the present invention;

[0033] Figure 5 A schematic cross-sectional view of a cavity support mechanism according to an embodiment of the present invention;

[0034] Figure 6 Schematic diagram of the cavity change principle provided by the embodiment of the present invention Figure 1 ;

[0035] Figure 7 Schematic diagram of the cavity change principle provided by the embodiment of the present invention Figure 2 ;

[0036] Figure 8 A schematic structural diagram of the main traction mechanism provided in an embodiment of the present invention.

[0037] In the figure: 10, cavity; 11, flexible belt; 21, driving wheel; 22, tensioning pulley; 31, support plate; 32, linear drive assembly; 321, linear drive one; 322, structural frame; 33, limiter; 34, heating plate; 40, main traction mechanism; 41, support frame; 42, clamping assembly; 411, fixed plate; 412, clamping plate; 413, linear drive two; 43, linear guide pair; 44, linear drive three; 51, front end positioning roller; 52, rear end positioning roller; 60, frame; 70, resin-based composite material; 1.1, lower track; 1.2, upper track; 1.3, block. DETAILED DESCRIPTION

[0038] like Figure 3-8 As shown, the present invention provides a resin-based composite material molding device, including: a cavity 10, multiple driving mechanisms, a cavity 10 support mechanism and a main traction mechanism 40, the cavity 10 is surrounded by multiple flexible belts 11; each driving mechanism corresponds to a flexible belt 11, each driving mechanism includes a driving wheel 21, a tensioning wheel 22 and a motor connected to the driving wheel 21, the driving wheel 21 and the tensioning wheel 22 are respectively located at the two ends of the cavity 10, each driving wheel 21 drives the corresponding flexible belt 11 to operate, and each tensioning wheel 22 is rotatably connected to the corresponding flexible belt 11; the cavity 10 support mechanism includes multiple support plates 31 with sliding surfaces and a linear drive assembly 32 connected to the support plate 31, each support plate 31 is attached to and slidably connected to the corresponding flexible belt 11; the main traction mechanism 40 is arranged at the outlet end of the cavity 10, for connecting and pulling the resin-based composite material 70.

[0039] Compared with the prior art, the resin-based composite material molding device provided by the present invention is a device in which the yarn soaked in resin enters the cavity 10. Since the cavity 10 is surrounded by a plurality of flexible belts 11, the inner wall of the cavity 10 can be made flat and smooth. In addition, the contact parts of adjacent flexible belts 11 can fit tightly together, and the support plate 31 of the cavity 10 support mechanism offsets the resin expansion force, thereby ensuring the stability of the cavity 10 structure. Thus, the gaps between the track plates and between the blocks in the prior art are avoided, and the problem of glue running and flash is less likely to occur. The surface of the flexible belt 11 is smoother and demolding is smoother. The cavity 10 structure surrounded by a plurality of flexible belts 11 does not require blocks, which can solve the problems of loose bolt fixation and block displacement, and ensure sufficiently high straightness. Moreover, the motors of the multiple drive mechanisms synchronously rotate the drive wheels 21 to drive the multiple flexible belts 11 to operate, and then cooperate with the main traction mechanism 40 to pull the molded resin-based composite material 70 from the cavity 10 more effortlessly.

[0040] See also Figure 7, the arrows in the figure are the directions of the flexible belts 11 adjustment, in this embodiment, the number of flexible belts 11 is at least 3, at this time, the cavity 10 is a triangular prism shape, and the fiber reinforced resin-based composite material 70 with a triangular prism structure can be manufactured, which can be used to manufacture structural parts such as aircraft fuselages, wings, and tail wings, or structural parts such as vehicle bodies, chassis, and wheels, or structural parts such as ship hulls, bridges, and cabins. Due to its high strength and lightweight, it can effectively reduce weight, improve speed and fuel economy. It can also be used in the construction field to manufacture building exterior walls, roofs, cantilever structures, etc. Due to its high strength and lightweight, it can effectively improve the wind resistance and seismic resistance of the building, and at the same time, it can also achieve lightweight design of the building.

[0041] When the number of flexible belts 11 is 4, the cavity 10 structure is a quadrangular prism shape, and the fiber reinforced resin-based composite material 70 with a square or trapezoidal column structure can be manufactured, which is mainly used for track sleepers of rail transit, and can also be used in the above-mentioned fields. Of course, 5 or more flexible belts 11 can also be used as needed.

[0042] Please refer to Figure 5 The resin-based composite material forming device provided by the application further comprises a cavity 10 positioning mechanism, the cavity 10 positioning mechanism comprises a plurality of front end positioning rollers 51 and a plurality of rear end positioning rollers 52, and the front end positioning rollers 51 and the rear end positioning rollers 52 are connected to the surface of one flexible belt 11 in pairs and are in abutting and rolling connection; the support plate 31 is arranged between the front end positioning rollers 51 and the rear end positioning rollers 52, each support plate 31 is rigidly connected with the corresponding front end positioning roller 51 and rear end positioning roller 52 at both ends of the support plate 31 through the linear drive assembly 32 connected with the support plate 31; and at least one flexible belt 11 is driven by the corresponding driving mechanism and the linear drive assembly 32.

[0043] Specifically, the flexible belt 11 is a transmission belt with flat surfaces on both sides, which is distributed circumferentially through multiple flexible belts 11, and its outer side surface is the inner side surface of the cavity 10. If the driving wheel 21 and the tensioning wheel 22 are not provided with a moving device, then the cavity 10 has only one model, that is, providing a moving device is a way to change the size of the cavity 10, but this method is more difficult to drive the support plate 31 to adjust its position at the same time. Therefore, a front end positioning roller 51 and a rear end positioning roller 52 are provided on the inner side of each flexible belt 11, and are respectively provided at the two ends of the cavity 10, that is, the distance between the front end positioning roller 51 and the rear end positioning roller 52 is the length of the cavity 10, and the front end positioning roller 51, the rear end positioning roller 52 and the support plate 31 are simultaneously A linear drive assembly 32 is driven, so that the flexible belt 11 can be stretched toward the same center line, so that the position of the flexible belt 11 at the cavity 10 changes. In this way, not only the number of mobile equipment can be reduced and the difficulty of design implementation can be reduced, but also the size of the cavity 10 can be changed by adjusting one or more groups of front-end positioning rollers 51 and rear-end positioning rollers 52 to manufacture resin-based composite materials 70 of different specifications; more importantly, there is no need to replace the blocks one by one as in the prior art, which takes a long time to realize the change of the specifications of the cavity 10. The present invention can realize the rapid change of the cavity 10, and the changeover cycle can be shortened from the traditional at least seven days to no more than 1 minute, thereby greatly improving production efficiency.

[0044] It should be noted that the edges of the multiple flexible strips 11 that constitute the cavity 10 are not in contact with each other, but the edges of some flexible strips 11 are in contact with the sides of other flexible strips 11 or are gap-fitted, so that when the size of the cavity 10 changes, it can still be ensured that there is no gap between adjacent flexible strips 11.

[0045] Among them, see Figure 6 The arrow in the figure indicates the direction of adjustment of the flexible belt 11. Preferably, one side of each flexible belt 11 in the width direction is in contact with the surface of the adjacent flexible belt 11. The bottom flexible belt 11 is the reference plane and remains stationary. The other flexible belts 11 adjust their positions inward or outward. The upper flexible belt 11 can move up and down, left and right; the left flexible belt 11 can move up and down, the right flexible belt 11 can move left and right. The lower belt is the reference plane. Except for rotational movement, it cannot move up and down, left and right. The mold changing process is as follows: mold changing for the width of the cavity 10: the right flexible belt 11 moves left and right, and the upper flexible belt 11 moves left and right; mold changing for the height of the cavity 10: the upper flexible belt 11 moves up and down, and the left flexible belt 11 moves up and down; by changing the movement of the four flexible belts 11, products of different models and sizes can be quickly changed. The movement of the four flexible belts 11 is all automatically controlled by the PLC system. The mold changing cycle is less than 1 minute. The PLC system is realized by existing technology, so it will not be described in detail.

[0046] In this embodiment, the linear drive assembly 32 is composed of multiple linear drivers 321 and a structural frame 322 or a plate. Each linear driver 321 is installed on the frame 60. The structural frame 322 or the plate is embedded and slidably connected to the frame 60. The structural frame 322 or the plate is used to install the support plate 31, the front end positioning roller 51 and the rear end positioning roller 52, etc. The linear driver 321 drives the structural frame 322 or the plate to drive the installation support plate 31, the front end positioning roller 51 and the rear end positioning roller 52 to adjust their positions, so as to achieve the purpose of adjusting the size of the cavity 10.

[0047] Furthermore, the support mechanism of the mold cavity 10 also includes a plurality of limit members 33, which are drive-connected to the linear drive assembly 32 and embedded and slidably connected to the flexible belt 11. Each limit member 33 is fixedly mounted on the structural frame 322 or the plate.

[0048] Specifically, under normal circumstances, the flexible belt 11 is mainly subjected to the resin expansion force, and this force will be offset by the support plate 31. Therefore, the flexible belt 11 generally does not undergo widthwise displacement. However, in some special cases, such as when the resin foaming is very uneven, the flexible belt 11 may undergo widthwise displacement. Therefore, one edge of the flexible belt 11 is embedded in the limiter 33. The limiter 33 is a block or strip fixed to the support plate 31. The limiter 33 includes a groove and a rolling body arranged in the groove. The width of the groove is slightly larger than the thickness of the flexible belt 11. Of course, the inner wall of the groove of the limiter 33 can also be provided with a sliding surface to reduce the friction with the flexible belt 11. In this way, one edge of the flexible belt 11 is connected to the adjacent flexible belt 11, and the other edge cooperates with the limiter 33, so that the position of the flexible belt 11 can be better maintained.

[0049] In this embodiment, a heating plate 34 is provided inside the support plate 31 or on the side facing away from the flexible belt 11 , which can be heated by water, electricity or oil, and its purpose is to heat or cool the cavity 10 .

[0050] In this embodiment, the support plate 31 is a metal plate, which may be a carbon steel plate, a stainless steel plate, an aluminum alloy plate, a copper alloy plate or a nickel-based alloy plate.

[0051] In this embodiment, the flexible belt 11 is a carbon steel belt, a stainless steel belt, a nickel-based alloy belt, an aluminum alloy belt, a titanium alloy belt or a copper alloy belt, preferably a carbon steel belt or a stainless steel belt.

[0052] In this embodiment, each driving mechanism also includes a linear drive four, not shown in the figure. The output end of the linear drive four is centrally connected to the rotating shaft of the tensioning wheel 22, which is used to control the tension of the flexible belt 11. In this way, each linear drive four can individually adjust the position of the tensioning wheel 22 in the length direction of the cavity 10, and cooperate with the front end positioning roller 51 and the rear end positioning roller 52 to widen the range of specifications of the cavity 10.

[0053] In this embodiment, the main traction mechanism 40 includes a support frame 41 and at least one clamping assembly 42 that moves linearly reciprocatingly along the support frame 41. The clamping assembly 42 includes a fixed plate 411, a clamping plate 412 and a linear driver 413 that drives the clamping plate 412 to move linearly and reciprocatingly.

[0054] Specifically, there can be two clamping assemblies 42, and a linear guide pair 43 is provided on the support frame 41. The two clamping assemblies 42 are installed on the linear guide pair 43. Two linear drivers 44 are also installed on the support frame 41, and are fixedly connected to the two clamping assemblies 42 respectively. The clamping assembly 42 is controlled to move forward and backward on the guide pair by the linear driver 44. The support frame 41 also contains control elements such as sensors for detecting and feedback the maximum moving distance of the clamping assembly 42. The clamping assembly 42 drives the clamping plate 412 to approach or move away from the fixed plate 411 below through the linear driver 413 to press down to clamp or release. The two clamping assemblies 42 can run back and forth crosswise.

[0055] In this embodiment, the linear drive 1 321 , the linear drive 2 413 , the linear drive 3 44 and the linear drive 4 are hydraulic cylinders or electric cylinders.

[0056] The specific traction principle is as follows:

[0057] Initially, both clamping assemblies 42 return to their initial traction positions, and the clamping plates 412 are fully opened. The flexible belt 11 in the cavity 10 drives the polyurethane foam synthetic sleeper to be transported to one clamping assembly 42. When the product passes through the space between the lower fixed plate 411 and the clamping plate 412, the driver pushes the clamping plate 412 to press against the surface of the product. At the same time, the linear drive 44 under the fixed base is also started at the same time, pushing one clamping assembly 42 forward, thereby pulling the product through the clamping assembly 42. When the clamping assembly 42 is about to reach the end position, the other clamping assembly 42 is started, and its action principle is the same as that of the previous clamping assembly 4. 2 are consistent, and the two clamp the product together for traction. When the front clamping assembly 42 travels to the end of the stroke, the driver begins to release the clamping and reset, and at the same time returns to the initial position of the stroke. Similarly, when the rear clamping assembly 42 is about to travel to the end of the stroke, the front clamping assembly 42 presses down and traction again, and the two clamp the product together for traction. When the rear clamping assembly 42 travels to the end of the stroke, it begins to release the clamping and reset, and at the same time returns to the initial position of the stroke. This cycle is repeated, and the two clamping assemblies 42 operate alternately to achieve traction and extrusion of the product. After the main traction mechanism 40 pulls the product, the traction of the flexible belt 11 mainly plays an auxiliary role.

[0058] The present invention provides a rail sleeper, which is manufactured using the resin-based composite material forming device.

[0059] Because the prior art is prone to flash when manufacturing the sleeper, not only will cause the product to be difficult to demold, surface tearing, but also need subsequent processing to remove the flash, and through the present forming device manufacturing directly get the sleeper, the surface is more flat, can reduce the subsequent processing procedure, improve the production efficiency, the cost is also lower, and the shape is various, adapts to different rail traffic.

[0060] The application provides a use method of a resin-based composite material forming device.

[0061] Firstly, the tension of the flexible belt 11 is adjusted through the tensioning wheel 22, rotation of the driving wheel 21 drives rotation of all the flexible belts 11, and the straight-line driving assembly 32 drives the support plate 31 to adhere to one side of the flexible belt 11; the yarn soaked with resin enters the cavity 10 and is foamed and pultruded at the same time, when the flexible belt 11 conveys the product to the position set by the main traction mechanism 40, the main traction mechanism 40 bears most of the conveying force, and the driving wheel 21 of the cavity 10 part plays an auxiliary traction role.

[0062] The use method only needs to adjust the tension of the flexible belt 11 through the tensioning wheel 22 to form the cavity 10, and cooperate with the main traction mechanism 40 to pull out the product, so that the operation is simple and easy to operate.

[0063] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to suggest that the protection scope of the application is limited to these examples; the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of one or more embodiments of the application as described above, which are not provided in details for the sake of brevity.

[0064] One or more embodiments of the application are intended to cover all such alternatives, modifications and variations as fall within the broad scope of the application. Therefore, any omission, modification, equivalent replacement, improvement and the like made in the spirit and principle of one or more embodiments of the application should be included in the protection scope of the application.

Claims

1. A resin-based composite material molding device, characterized in that: include: A mold cavity (10), wherein the mold cavity (10) is surrounded by a plurality of flexible strips (11); A plurality of drive mechanisms, each of the drive mechanisms corresponds to a flexible belt (11), each of the drive mechanisms comprises a drive wheel (21), a tension wheel (22) and a motor connected to the drive wheel (21), the drive wheel (21) and the tension wheel (22) being respectively located at two ends of the cavity (10), each drive wheel (21) driving the corresponding flexible belt (11) to operate, and each tension wheel (22) being connected to the corresponding flexible belt (11) in rotation; A cavity support mechanism, the cavity support mechanism comprising a plurality of support plates (31) having sliding surfaces and a linear drive assembly (32) connected to the support plates (31), the plurality of support plates (31) surrounding the cavity (10), each support plate (31) being in contact with and slidingly engaged with a corresponding flexible belt (11); as well as A main traction mechanism (40), the main traction mechanism (40) being arranged at the outlet end of the cavity (10) and being used for connecting and pulling the resin-based composite material (70); One side edge of each flexible belt (11) in the width direction is in contact with the surface of an adjacent flexible belt (11).

2. The resin-based composite material forming device according to claim 1, characterized in that: It also includes a cavity positioning mechanism, the cavity positioning mechanism including a plurality of front-end positioning rollers (51) and a plurality of rear-end positioning rollers (52), wherein the front-end positioning rollers (51) and the rear-end positioning rollers (52) are grouped in pairs and abut against and roll-connected to the surface of a corresponding flexible belt (11); The support plate (31) is arranged between a front-end positioning roller (51) and a rear-end positioning roller (52); a linear drive assembly (32) connected to each support plate (31) is rigidly connected to the front-end positioning roller (51) and the rear-end positioning roller (52) corresponding to the two ends of the support plate (31); and at least one flexible belt (11) is correspondingly connected to the driving mechanism and the linear drive assembly (32).

3. The resin-based composite material forming device according to claim 1, characterized in that: The cavity support mechanism further comprises a plurality of limiting members (33), wherein the limiting members (33) are drivingly connected to the linear drive assembly (32), and the limiting members (33) are embeddedly and slidingly connected to the flexible belt (11).

4. The resin-based composite material forming device according to claim 1, characterized in that: A heating plate (34) is provided inside the support plate (31) or on the side facing away from the flexible belt (11).

5. The resin-based composite material forming device according to claim 1, characterized in that: Each driving mechanism further comprises a linear drive 1 (321), wherein the output end of the linear drive 1 (321) is centrally connected to the rotating shaft of the tensioning wheel (22) for controlling the tension of the flexible belt (11).

6. The resin-based composite material forming device according to claim 1, characterized in that: The flexible strip (11) is a carbon steel strip, a stainless steel strip, a nickel-based alloy strip, an aluminum alloy strip, a titanium alloy strip or a copper alloy strip.

7. The resin-based composite material forming device according to claim 1, characterized in that: The main traction mechanism (40) comprises a support frame (41) and at least one clamping assembly (42) that moves linearly back and forth along the support frame (41); the clamping assembly (42) comprises a fixing plate (411), a clamping plate (412), and a second linear driver (413) that drives the clamping plate (412) to move linearly back and forth.

8. A sleeper, characterized in that: The resin-based composite material is manufactured using the resin-based composite material molding device according to any one of claims 1 to 7.

9. A method for using the resin-based composite material molding device according to claim 1, characterized in that: The following steps are involved: First, the tension of the flexible belt (11) is adjusted by the tensioning wheel (22), and the rotation of the driving wheel (21) drives the rotation of all the flexible belts (11); The yarn soaked in resin enters the cavity (10) and is foamed and pulled. When the flexible belt (11) transports the product to the position set by the main traction mechanism (40), the main traction mechanism (40) bears most of the conveying force, and the driving wheel (21) of the cavity (10) plays an auxiliary traction role.

Images