A fiber-reinforced sheet molding device

Abstract

The utility model is suitable for fiber reinforced board processing technical field provides a kind of fiber reinforced board forming device, including frame, the frame is equipped with conveyor belt, the board is placed on the conveyor belt, the frame is equipped with hot press forming assembly, one side of the hot press forming assembly is fixedly connected with pre-pressing device, pre-pressing device outer fixedly connected with heating device. By setting pre-pressing device, before board enters hot press procedure, in the conveying process of conveyor belt, by pulling connecting plate drive swivel joint rotates along fixed shaft, make compression roller lift to board above, then release connecting plate, the elastic restoring force of coil spring drive swivel joint reverse rotation, drive connecting plate and compression roller synchronous depression, make compression roller and board surface contact, with the continuous feeding of conveyor belt, compression roller applies uniform pressure to board in rolling process, promote the bubble in resin matrix to be mechanically extruded in pre-pressing stage and discharge, reduce the internal defect when subsequent hot press.

Description

Technical Field

[0001] This utility model belongs to the field of fiber reinforced board processing technology, and in particular relates to a fiber reinforced board forming device. Background Technology

[0002] Fiber-reinforced laminate is a high-performance material composed of high-strength fibers (such as carbon fiber, glass fiber, or aramid fiber) and a resin matrix (such as epoxy resin, polyester resin, etc.). It combines excellent properties such as lightweight, high strength, and corrosion resistance. The fibers provide the main load-bearing capacity, while the resin matrix fixes the fibers and transmits stress. This makes the laminate widely used in aerospace, automotive manufacturing, wind turbine blades, sports equipment, and other fields. Its design is highly flexible, and the mechanical properties can be optimized by adjusting the fiber direction, number of layers, and resin type to meet the needs of different working conditions. It is an ideal choice to replace traditional metal materials in modern industry.

[0003] In the existing processing of fiber reinforced boards, hot pressing is a key curing process. However, directly applying high temperature and high pressure may prevent volatiles or residual air in the resin matrix from escaping completely, thus forming bubble defects inside the material. These bubbles will reduce the interlayer bonding strength and may cause stress concentration, ultimately affecting the mechanical properties and overall quality of the composite material. Utility Model Content

[0004] This invention provides a fiber-reinforced board molding device, which aims to solve the problem that in the existing fiber-reinforced board processing, hot pressing is a key curing process, but directly applying high temperature and high pressure may cause volatiles or residual air in the resin matrix to not escape fully, thereby forming bubble defects inside the material. These bubbles will reduce the interlayer bonding strength and may cause stress concentration, ultimately affecting the mechanical properties and overall quality of the composite material.

[0005] This utility model is implemented as follows: a fiber reinforced board forming device includes: a frame, a conveyor belt installed inside the frame, a board placed on the conveyor belt, a hot pressing forming component installed inside the frame, a pre-pressing device fixedly connected to one side of the hot pressing forming component, and a heating device fixedly connected to the outside of the pre-pressing device. The pre-compression device includes a rotating ring, a connecting plate fixedly connected to the outside of the rotating ring, an elongated groove opened in the connecting plate, a rotating shaft rotatably connected in the elongated groove, a pressure roller sleeved on the rotating shaft, the elongated groove and the rotating shaft forming a rotatable connection, and the pressure roller overlapping the upper surface of the conveyor belt.

[0006] Preferably, the pre-pressing device further includes two connecting blocks, which are fixedly connected to one side of the hot pressing forming assembly. The two connecting blocks are fixedly connected to the same fixed shaft, the rotating ring is sleeved on the fixed shaft, and the fixed shaft is sleeved with two coil springs.

[0007] Preferably, one end of the coil spring is fixedly connected to the outside of the connecting block, and the other end of the coil spring is fixedly connected to the outside of the rotating ring.

[0008] Preferably, the outer sleeve of the pressure roller is provided with a heat-conducting sleeve to facilitate heat conduction.

[0009] Preferably, the initial state of the connecting plate is set to an inclined state with a certain angle, and the connecting plate overlaps one side of the thermoforming assembly.

[0010] Preferably, the heating device includes a battery pack and a mounting plate. The battery pack is fixedly connected to the outside of the connecting plate, and wires are connected inside the battery pack. The mounting plate is fixedly connected to the outside of the connecting plate, and a housing is fixedly connected to the outside of the mounting plate. Two heating wires are installed inside the housing.

[0011] Preferably, the heating wire is electrically connected to the battery pack via a wire.

[0012] Preferably, the inner diameter of the sleeve is larger than the diameter of the heat-conducting sleeve cross-section, and the sleeve is fitted outside the heat-conducting sleeve.

[0013] Compared with related technologies, the fiber-reinforced board forming device provided by this utility model has the following beneficial effects: By setting up a pre-compression device, before the board enters the hot pressing process, during the conveyor belt conveying process, the connecting plate is pulled to drive the rotating ring to rotate along the fixed shaft, so that the pressure roller is raised above the board. Then the connecting plate is released, and the elastic restoring force of the coil spring drives the rotating ring to rotate in the opposite direction, causing the connecting plate and the pressure roller to press down synchronously, so that the pressure roller contacts the surface of the board. As the conveyor belt continues to feed, the pressure roller applies uniform pressure to the board during the rolling process, which causes the air bubbles in the resin matrix to be mechanically squeezed out during the pre-compression stage, reducing internal defects during subsequent hot pressing.

[0014] By setting up a heating device, the battery pack supplies power to the heating wire through wires, creating a controllable thermal field inside the casing. When the pressure roller and the heat-conducting sleeve rotate to the casing area, their surfaces absorb heat and transfer it to the pressure roller. This design allows the pressure roller to maintain a moderate temperature during the pre-pressing stage, enhances resin fluidity through the thermal softening effect, further improves the efficiency of bubble removal, and optimizes the pre-pressing effect. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the hot-pressing molding component of this utility model; Figure 3 This is a three-dimensional structural diagram of the pre-compression device of this utility model; Figure 4This is a three-dimensional structural diagram of the heating device of this utility model.

[0016] Reference numerals: 1. Frame; 2. Conveyor belt; 3. Sheet metal; 4. Hot pressing forming assembly; 5. Pre-pressing device; 51. Connecting block; 52. Fixed shaft; 53. Rotary ring; 54. Coil spring; 55. Connecting plate; 56. Long groove; 57. Rotary shaft; 58. Pressure roller; 59. Heat-conducting sleeve; 6. Heating device; 61. Battery pack; 62. Wire; 63. Mounting plate; 64. Housing; 65. Heating wire. Detailed Implementation

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0018] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0019] This utility model embodiment provides a fiber-reinforced sheet molding device, such as Figure 1-4 As shown, it includes: a frame 1, a conveyor belt 2 installed inside the frame 1, a plate 3 placed on the conveyor belt 2, a hot pressing forming assembly 4 installed inside the frame 1, a pre-pressing device 5 fixedly connected to one side of the hot pressing forming assembly 4, and a heating device 6 fixedly connected to the outside of the pre-pressing device 5. The pre-compression device 5 includes a rotating ring 53, a connecting plate 55 fixedly connected to the outside of the rotating ring 53, a long groove 56 is opened in the connecting plate 55, a rotating shaft 57 is rotatably connected in the long groove 56, and a pressure roller 58 is sleeved on the rotating shaft 57. The long groove 56 and the rotating shaft 57 form a rotatable connection, and the pressure roller 58 overlaps the upper surface of the conveyor belt 2.

[0020] In a further preferred embodiment of the present invention, the pre-pressing device 5 further includes two connecting blocks 51, which are fixedly connected to one side of the hot pressing forming assembly 4. The same fixed shaft 52 is fixedly connected inside the two connecting blocks 51. A rotating ring 53 is sleeved on the outside of the fixed shaft 52. Two coil springs 54 are sleeved on the fixed shaft 52. One end of the coil spring 54 is fixedly connected to the outside of the connecting plate 55, and the other end of the coil spring 54 is fixedly connected to the outside of the rotating ring 53. A heat-conducting sleeve 59 is sleeved on the pressure roller 58 to facilitate heat conduction. The initial state of the connecting plate 55 is set to be inclined at a certain angle, and the connecting plate 55 overlaps one side of the hot pressing forming assembly 4.

[0021] In this embodiment, the rotating ring 53 is sleeved outside the fixed shaft 52 and forms an elastic linkage with the connecting plate 55 through the coil spring 54. When the rotating ring 53 is rotated by an external force, the coil spring 54 stores elastic potential energy. After the external force is released, the rebound force of the coil spring 54 drives the rotating ring 53 to reset, which drives the pressure roller 58 to press down quickly. This cooperation not only realizes the automatic reset of the pre-pressing action, but also allows the pressure intensity of the pressure roller 58 to be precisely controlled by adjusting the stiffness of the coil spring 54, ensuring the uniformity and stability of bubble discharge.

[0022] In a further preferred embodiment of this utility model, the heating device 6 includes a battery pack 61 and a mounting plate 63. The battery pack 61 is fixedly connected to the outside of the connecting plate 55, and a wire 62 is connected inside the battery pack 61. The mounting plate 63 is fixedly connected to the outside of the connecting plate 55, and a housing 64 is fixedly connected to the outside of the mounting plate 63. Two heating wires 65 are installed inside the housing 64. The heating wires 65 are electrically connected to the battery pack 61 through the wire 62. The inner diameter of the housing 64 is larger than the diameter of the cross-section of the heat-conducting sleeve 59, and the housing 64 is snapped onto the outside of the heat-conducting sleeve 59.

[0023] In this embodiment, the heat-conducting sleeve 59 covers the outer surface of the pressure roller 58. Its high thermal conductivity can efficiently transfer the heat generated by the heating wire 65 inside the sleeve 64 to the contact surface of the pressure roller 58. The spacing design between the heating wire 65 and the heat-conducting sleeve 59 makes the heat concentrated and controllable, avoiding local overheating. This combination keeps the pressure roller 58 at a constant temperature during the pre-pressing stage, softening the resin matrix while reducing the thermal hysteresis effect and improving the efficiency of bubble discharge. The inner diameter of the sleeve 64 is slightly larger than the cross-section of the heat-conducting sleeve 59, forming a non-contact annular heat cavity. This gap can reduce friction loss and balance the heat distribution through air convection, making the heat-conducting sleeve 59 heated evenly. Combined with the closed-loop temperature control of the heating wire 65, it can achieve rapid response and precise adjustment of the temperature during the pre-pressing stage.

[0024] In summary, before the sheet 3 enters the hot pressing process, during the conveyor belt 2 transport, the connecting plate 55 drives the rotating ring 53 to rotate along the fixed shaft 52, causing the pressure roller 58 to rise above the sheet 3. Then, the connecting plate 55 is released, and the elastic restoring force of the coil spring 54 drives the rotating ring 53 to rotate in the opposite direction, causing the connecting plate 55 and the pressure roller 58 to press down synchronously, so that the pressure roller 58 contacts the surface of the sheet 3. As the conveyor belt 2 continues to feed, the pressure roller 58 applies uniform pressure to the sheet 3 during the rolling process, causing the air bubbles in the resin matrix to be mechanically squeezed out during the pre-pressing stage. The battery pack 61 supplies power to the heating wire 65 through the wire 62, so that a controllable thermal field is formed inside the casing 64. When the pressure roller 58 and the heat-conducting sleeve 59 rotate to the area of ​​the casing 64, their surfaces absorb heat and transfer it to the pressure roller 58. This design keeps the pressure roller 58 at a moderate temperature during the pre-pressing stage, enhances the resin fluidity through the thermal softening effect, and further improves the air bubble discharge efficiency.

[0025] It is worth noting that the circuits, electronic components, and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0026] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative; the division of units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; the indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0027] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A fiber-reinforced board forming device, characterized in that, include: A frame (1) is provided, a conveyor belt (2) is installed inside the frame (1), a plate (3) is placed on the conveyor belt (2), a hot pressing forming assembly (4) is installed inside the frame (1), a pre-pressing device (5) is fixedly connected to one side of the hot pressing forming assembly (4), and a heating device (6) is fixedly connected to the outside of the pre-pressing device (5). The pre-compression device (5) includes a rotating ring (53), a connecting plate (55) is fixedly connected to the outside of the rotating ring (53), a long groove (56) is opened in the connecting plate (55), a rotating shaft (57) is rotatably connected in the long groove (56), a pressure roller (58) is sleeved on the rotating shaft (57), the long groove (56) and the rotating shaft (57) form a rotatable connection, and the pressure roller (58) overlaps the upper surface of the conveyor belt (2).

2. The fiber-reinforced sheet forming apparatus as described in claim 1, characterized in that, The pre-pressing device (5) also includes two connecting blocks (51), which are fixedly connected to one side of the hot pressing molding assembly (4). The two connecting blocks (51) are fixedly connected to the same fixed shaft (52). The rotating ring (53) is sleeved on the outside of the fixed shaft (52). The fixed shaft (52) is sleeved with two coil springs (54).

3. The fiber-reinforced board forming apparatus as described in claim 2, characterized in that, One end of the coil spring (54) is fixedly connected to the outside of the connecting block (51), and the other end of the coil spring (54) is fixedly connected to the outside of the rotating ring (53).

4. The fiber-reinforced sheet forming apparatus as described in claim 1, characterized in that, The pressure roller (58) is covered with a heat-conducting sleeve (59) to facilitate heat conduction.

5. The fiber-reinforced sheet forming apparatus as described in claim 4, characterized in that, The initial state of the connecting plate (55) is set to be inclined at a certain angle, and the connecting plate (55) overlaps one side of the hot-pressing assembly (4).

6. The fiber-reinforced sheet forming apparatus as described in claim 4, characterized in that, The heating device (6) includes a battery pack (61) and a mounting plate (63). The battery pack (61) is fixedly connected to the outside of the connecting plate (55). A wire (62) is connected inside the battery pack (61). The mounting plate (63) is fixedly connected to the outside of the connecting plate (55). A housing (64) is fixedly connected to the outside of the mounting plate (63). Two heating wires (65) are installed inside the housing (64).

7. The fiber-reinforced sheet forming apparatus as described in claim 6, characterized in that, The heating wire (65) is electrically connected to the battery pack (61) via a wire (62).

8. The fiber-reinforced sheet forming apparatus as described in claim 6, characterized in that, The inner diameter of the sleeve (64) is larger than the diameter of the cross-section of the heat-conducting sleeve (59), and the sleeve (64) is fitted outside the heat-conducting sleeve (59).

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