Fiber composite material preparation device

Abstract

The invention provides a fiber composite material preparation device which comprises a machine base. A lower protective film discharging device, a resin placing platform, a first rolling assembly, a second rolling assembly, a traction roller assembly and a finished product winding device are sequentially arranged on the machine base in the flowing direction of the lower protective film; a first middle film winding and unwinding device, a base film unwinding device, a second middle film winding and unwinding device and an upper protective film unwinding device are further arranged on the machine base, the first middle film winding and unwinding device is arranged corresponding to the first rolling assembly, and the base film unwinding device and the second middle film winding and unwinding device are arranged corresponding to the second rolling assembly. And the upper protective film unwinding device is arranged corresponding to the traction roller assembly. According to the fiber composite material preparation device, gluing and impregnation can be integrated into one step, so that the production efficiency is improved; and the first intermediate film and the second intermediate film in the film pressing process can be recycled, and the upper protective film can be a common release film with low cost, so that the production cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of fiber composite material manufacturing equipment, and in particular to a fiber composite material preparation apparatus. Background Technology

[0002] Existing fiber composite materials generally require steps such as coating and impregnation during manufacturing. Coating typically involves heating and softening the resin material, then scraping it onto release paper using a doctor blade, and finally pressing it into a film using a roller press. Impregnation typically involves calendering and laminating the film with a porous base film (such as fiber cloth) using a roller press to obtain the fiber composite material.

[0003] Currently, in the production of fiber composites, coating and impregnation are two separate steps, reducing production efficiency. During coating, both sides of the adhesive film need to be covered with PET release film to ensure surface smoothness and protect the film. However, in the subsequent impregnation process, the PET release film on both sides of the adhesive film needs to be peeled off, and the adhesive film and base film are then calendered and laminated. The resulting fiber composite material then needs to be covered with PET release film on both sides again. Since the peeled PET release film cannot be reused, and PET release film is relatively expensive, it generally cannot be replaced with other lower-cost release papers (PET release film has a smooth surface, resulting in a smooth and flat adhesive film, but it is expensive; ordinary release paper, although cheaper, has a high surface roughness, resulting in a less smooth adhesive film). This leads to a waste of PET release film and increases production costs. Summary of the Invention

[0004] The purpose of this invention is to provide a fiber composite material preparation apparatus that integrates coating and impregnation into one step (process), thereby improving production efficiency; moreover, it can recycle the first and second intermediate films during the lamination process, and the upper protective film can use a common release film with low cost, thereby reducing production costs.

[0005] This invention provides a fiber composite material preparation apparatus for preparing fiber composite materials. The fiber composite material includes a lower protective film, a fiber composite material layer, and an upper protective film stacked sequentially. The fiber composite material preparation apparatus includes a machine base. Along the flow direction of the lower protective film, the machine base is sequentially provided with a lower protective film feeding device, a resin placement platform, a first roller pressing assembly, a second roller pressing assembly, a traction roller assembly, and a finished product winding device.

[0006] The machine base is also provided with a first intermediate film winding and unwinding device, a base film unwinding device, a second intermediate film winding and unwinding device, and an upper protective film unwinding device. The first intermediate film winding and unwinding device is set to correspond to the first roller pressing assembly. The base film unwinding device and the second intermediate film winding and unwinding device are both set to correspond to the second roller pressing assembly. The upper protective film unwinding device is set to correspond to the traction roller assembly.

[0007] The lower protective film unwinding device is used to unwind the lower protective film; the resin placement platform is used to support the resin material placed on the lower protective film.

[0008] The first intermediate film unwinding and winding device is used to unwind and wind the first intermediate film; the first roll forming assembly is used to calender the resin material under the protection of the first intermediate film to form an adhesive film on the lower protective film.

[0009] The base film unwinding device is used to unwind the base film, and the second intermediate film unwinding and rewinding device is used to unwind and rewind the second intermediate film; the second roll forming assembly is used to calender and laminate the base film and the adhesive film under the protection of the second intermediate film to form a fiber composite material layer on the lower protective film.

[0010] The upper protective film unwinding device is used to unwind the upper protective film; the traction roller assembly is used to roll-press the upper protective film and the fiber composite material layer to form a fiber composite material, and to traction the fiber composite material; the finished product winding device is used to wind the fiber composite material.

[0011] In one possible implementation, the first roll forming assembly includes a first upper calendering roll and a first lower calendering roll arranged opposite each other, the second roll forming assembly includes a second upper calendering roll and a second lower calendering roll arranged opposite each other, and the traction roll assembly includes an upper traction roll and a lower traction roll arranged opposite each other.

[0012] The lower protective film unwound by the lower protective film unwinding device can flow sequentially through the upper surface of the resin placement platform, between the first upper calendering roller and the first lower calendering roller, between the second upper calendering roller and the second lower calendering roller, and between the upper traction roller and the lower traction roller before connecting to the finished product winding device; the base film unwound by the base film unwinding device can flow between the second upper calendering roller and the second lower calendering roller, and the upper protective film unwound by the upper protective film unwinding device can flow between the upper traction roller and the lower traction roller.

[0013] In one possible implementation, the first intermediate film unwinding and winding device includes a first intermediate film unwinding device and a first intermediate film winding device, wherein the first intermediate film unwinding device is used to unwind the first intermediate film, and the first intermediate film winding device is used to wind the first intermediate film; the first intermediate film unwound by the first intermediate film unwinding device is connected to the first intermediate film winding device after passing between the first upper calendering roller and the first lower calendering roller.

[0014] In one possible implementation, both the first intermediate film unwinding device and the first intermediate film winding device are located above the first roll forming assembly; and along the flow direction of the lower protective film, the first intermediate film unwinding device is located upstream of the first intermediate film winding device, and both the first intermediate film unwinding device and the first intermediate film winding device are located downstream of the first roll forming assembly, so that during the unwinding and winding process, the upper end of the first intermediate film can be tilted towards the side closer to the second roll forming assembly relative to its lower end.

[0015] In one possible embodiment, the second intermediate film unwinding and winding device includes a second intermediate film unwinding device and a second intermediate film winding device. The second intermediate film unwinding device is used to unwind the second intermediate film, and the second intermediate film winding device is used to wind the second intermediate film. The second intermediate film unwound by the second intermediate film unwinding device is connected to the second intermediate film winding device after passing between the second upper calendering roller and the second lower calendering roller.

[0016] In one possible embodiment, the base film unwinding device, the second intermediate film unwinding device, and the second intermediate film winding device are all located above the second roll forming assembly; and along the flow direction of the lower protective film, the second intermediate film unwinding device is located upstream of the second intermediate film winding device, and the base film unwinding device is located upstream of the second intermediate film unwinding device.

[0017] In one possible implementation, along the flow direction of the lower protective film, both the base film unwinding device and the second intermediate film unwinding device are located upstream of the second roll forming assembly, and the second intermediate film winding device is located downstream of the second roll forming assembly.

[0018] In one possible implementation, the upper protective film unwinding device is located above the upper traction roller and the lower traction roller; and along the flow direction of the lower protective film, the upper protective film unwinding device is located upstream of the traction roller assembly.

[0019] In one possible implementation, the machine base is provided with a support platform for supporting the lower protective film unwound by the lower protective film unwinding device; the support platform is located between the resin placement platform and the finished product winding device, and the front end of the support platform is connected to the resin placement platform; the support platform passes through the space between the first upper calendering roll and the first lower calendering roll, the space between the second upper calendering roll and the second lower calendering roll, and the space between the upper traction roll and the lower traction roll, and the support platform is provided with clearance openings corresponding to the positions of the first roll pressing assembly, the second roll pressing assembly, and the traction roll assembly, respectively.

[0020] In one possible implementation, the resin placement platform is a heating platform with a heating function, which is capable of heating the resin material.

[0021] In one possible implementation, the lower protective film feeding device is disposed below the resin placement platform; the base is provided with a first steering roller, the first steering roller is located in front of the resin placement platform, and the upper surface of the first steering roller is flush with the upper surface of the resin placement platform; the lower protective film unwound by the lower protective film feeding device can flow to the upper surface of the resin placement platform after being turned by the first steering roller.

[0022] In one possible implementation, the base is provided with a second steering roller, which is located behind the support platform, and the upper surface of the second steering roller is flush with the upper surface of the support platform; the pressed fiber composite material can be turned by the second steering roller and connected to the finished product winding device.

[0023] In one possible implementation, the finished product winding device can be moved back and forth relative to the traction roller assembly to adjust the distance between the finished product winding device and the traction roller assembly.

[0024] The fiber composite material preparation apparatus provided by this invention, by setting up a first roller pressing assembly, a lower protective film unwinding device, and a first intermediate film winding and unwinding device, can calender resin material under the protection of the first intermediate film to form an adhesive film on the lower protective film; by setting up a second roller pressing assembly, a base film unwinding device, and a second intermediate film winding and unwinding device, can calender and composite the base film and adhesive film under the protection of the second intermediate film to form a fiber composite material layer; by setting up a traction roller assembly and an upper protective film unwinding device, can roll-press and composite the upper protective film and the fiber composite material layer to form a fiber composite material, thereby integrating the original coating and impregnation processes into one step (process), greatly improving production efficiency.

[0025] Meanwhile, because the first intermediate film unwinding and rewinding device can unwind and rewind the first intermediate film, and the second intermediate film unwinding and rewinding device can unwind and rewind the second intermediate film, PET release films with good flatness can be used for both the first and second intermediate films during the lamination process. This ensures that the pressed fiber composite material layer has good flatness and thickness consistency, and the more expensive first and second intermediate films can be recycled and reused after rewinding. After lamination, the upper protective film can be laminated with the fiber composite material layer using a lower-cost ordinary release film. In this way, not only can the product quality of the fiber composite material be guaranteed, but production costs can also be greatly reduced. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the fiber composite material preparation device in an embodiment of the present invention.

[0028] Figure 2 for Figure 1 A schematic diagram of the structure after removing the first roller pressing assembly, the second roller pressing assembly, and the traction roller assembly.

[0029] Figure 3 This is a schematic diagram of the fiber composite material preparation device in operation according to an embodiment of the present invention.

[0030] Figure 4 for Figure 3 A cross-sectional schematic diagram.

[0031] Figure 5 This is a cross-sectional schematic diagram of the fiber composite material in an embodiment of the present invention.

[0032] Figure 6 for Figure 5 A schematic diagram of the cross-section of the medium fiber composite layer. Detailed Implementation

[0033] The specific embodiments of the present invention will be described in further detail below. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention. The terms "first," "second," "third," "fourth," etc. (if present) in the specification and claims of the present invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0034] like Figures 1 to 6As shown, this embodiment of the invention provides a fiber composite material preparation apparatus 1 for preparing fiber composite material 3. The fiber composite material 3 includes a lower protective film 31, a fiber composite material layer 32, and an upper protective film 33, stacked sequentially from bottom to top. The fiber composite material layer 32 includes a base film 321 and an adhesive film 322 stacked with the base film 321. The base film 321 generally has a porous structure with multiple mesh openings 3210. The adhesive film 322 is not only disposed on the surface of the base film 321 but also embedded in the mesh openings 3210 of the base film 321. The base film 321 can be made of materials such as nylon, polyester, quartz, etc. The upper protective film 33 and the lower protective film 31 protect the fiber composite material layer 32, and need to be peeled off before subsequent use of the fiber composite material layer 32.

[0035] The fiber composite material preparation device 1 includes a base 10; along the flow direction S (i.e., the transfer direction) of the lower protective film 31, the base 10 is sequentially provided with a lower protective film feeding device 11, a resin placement platform 12, a first roller pressing assembly 13, a second roller pressing assembly 14, a traction roller assembly 15, and a finished product winding device 16.

[0036] The base 10 is also provided with a first intermediate film winding and unwinding device 17, a base film unwinding device 18, a second intermediate film winding and unwinding device 19, and an upper protective film unwinding device 20. The first intermediate film winding and unwinding device 17 is set to correspond to the first roller pressing assembly 13. The base film unwinding device 18 and the second intermediate film winding and unwinding device 19 are both set to correspond to the second roller pressing assembly 14. The upper protective film unwinding device 20 is set to correspond to the traction roller assembly 15.

[0037] The lower protective film unwinding device 11 is used to unwind the lower protective film 31, and the lower protective film 31 unwound by the lower protective film unwinding device 11 can flow sequentially through the upper surface of the resin placement platform 12, the first roller pressing assembly 13, the second roller pressing assembly 14 and the traction roller assembly 15 before being connected to the finished product winding device 16.

[0038] The resin placement platform 12 is used to support the resin material (not shown) placed on the lower protective film 31. That is, during production, the resin material is placed on the lower protective film 31 above the resin placement platform 12.

[0039] The first intermediate film unwinding and winding device 17 is used to unwind and wind the first intermediate film 4, and the first intermediate film 4 unwound by the first intermediate film unwinding and winding device 17 can flow through the first roller pressing assembly 13 and then flow back to the first intermediate film unwinding and winding device 17.

[0040] The first roller pressing assembly 13 is used to calender the resin material under the protection of the first intermediate film 4. After being calendered, the resin material forms a film structure to form an adhesive film 322 on the lower protective film 31. After the adhesive film 322 is obtained by calendering, the first intermediate film 4 is wound up and recycled by the first intermediate film unwinding device 17. During the process of calendering the resin material to form the adhesive film 322, the first intermediate film 4 and the lower protective film 31 are located on the upper and lower sides of the adhesive film 322, respectively. This avoids the resin material from sticking to the first roller pressing assembly 13 during calendering and ensures that the pressed adhesive film 322 has good flatness and thickness consistency. To improve the flatness and thickness consistency of the adhesive film 322, the first intermediate film 4 and the lower protective film 31 are generally made of PET (polyethylene terephthalate) release film with good flatness.

[0041] The base film unwinding device 18 is used to unwind the base film 321, and the base film 321 unwound by the base film unwinding device 18 can flow through the second roller pressing assembly 14.

[0042] The second intermediate film unwinding and winding device 19 is used to unwind and wind the second intermediate film 5, and the second intermediate film 5 unwound by the second intermediate film unwinding and winding device 19 can flow through the second roller pressing assembly 14 and then flow back to the second intermediate film unwinding and winding device 19.

[0043] The second roll forming assembly 14 is used to calender and laminate the base film 321 and the adhesive film 322 under the protection of the second intermediate film 5. During the calendering process, a portion of the adhesive film 322 covers the surface of the base film 321, and another portion is embedded in the mesh 3210 of the base film 321 to form a fiber composite material layer 32 on the lower protective film 31 (i.e., the base film 321 and the adhesive film 322 are rolled and laminated to form a fiber composite material layer 32). After the fiber composite material layer 32 is obtained by calendering, the second intermediate film 5 is wound and recycled by the second intermediate film unwinding device 19. In the process of calendering and laminating the base film 321 and the adhesive film 322 to form the fiber composite material layer 32, the second intermediate film 5 and the lower protective film 31 are located on the upper and lower sides of the fiber composite material layer 32, respectively. On the one hand, this can prevent the fiber composite material layer 32 from sticking to the second roll forming assembly 14 during the calendering process, and on the other hand, it can ensure that the pressed fiber composite material layer 32 has good flatness and thickness consistency. To improve the flatness and thickness consistency of the fiber composite layer 32, the second intermediate film 5 is generally made of PET release film with good flatness.

[0044] The upper protective film unwinding device 20 is used to unwind the upper protective film 33, and the upper protective film 33 unwound by the upper protective film unwinding device 20 can flow through the traction roller assembly 15.

[0045] The traction roller assembly 15 is used to roll-press the upper protective film 33 and the fiber composite material layer 32, so that the upper protective film 33 covers the upper surface of the fiber composite material layer 32 to form the fiber composite material 3. At the same time, the traction roller assembly 15 also pulls the fiber composite material 3, causing the fiber composite material 3 to flow backward (i.e., the traction roller assembly 15 provides traction power for the backward flow of the fiber composite material 3). Since the fiber composite material layer 32 has been pressed and formed, the upper protective film 33 only protects the fiber composite material layer 32 and does not affect the surface flatness and thickness uniformity of the fiber composite material layer 32. Therefore, the upper protective film 33 can use a low-cost ordinary release film, such as PE (polyethylene) release film, thereby reducing costs.

[0046] The finished product winding device 16 is used to wind up the prepared fiber composite material 3.

[0047] The fiber composite material preparation apparatus 1 provided in this embodiment of the invention, by setting a first roller pressing assembly 13, a lower protective film unwinding device 11, and a first intermediate film winding and unwinding device 17, can calender the resin material under the protection of the first intermediate film 4 to form an adhesive film 322 on the lower protective film 31; by setting a second roller pressing assembly 14, a base film unwinding device 18, and a second intermediate film winding and unwinding device 19, can calender and composite the base film 321 and the adhesive film 322 under the protection of the second intermediate film 5 to form a fiber composite material layer 32; by setting a traction roller assembly 15 and an upper protective film unwinding device 20, can roll-press and composite the upper protective film 33 and the fiber composite material layer 32 to form a fiber composite material 3, thereby integrating the original coating and impregnation processes into one step (process), greatly improving production efficiency.

[0048] Meanwhile, since the first intermediate film unwinding and rewinding device 17 can unwind and rewind the first intermediate film 4, and the second intermediate film unwinding and rewinding device 19 can unwind and rewind the second intermediate film 5, the first intermediate film 4 and the second intermediate film 5 can use PET release films with good flatness during the lamination process. This ensures that the pressed fiber composite material layer 32 has good flatness and thickness consistency, and the more expensive first intermediate film 4 and the second intermediate film 5 can be recycled and reused after rewinding. After lamination, the upper protective film 33 can be laminated with the fiber composite material layer 32 using a lower-cost ordinary release film (since the fiber composite material layer 32 has been pressed, the upper protective film 33 only protects the fiber composite material layer 32 and does not affect the surface flatness of the fiber composite material layer 32). In this way, not only can the product quality of the fiber composite material 3 be guaranteed, but the production cost can also be greatly reduced.

[0049] like Figures 1 to 4As shown, in one embodiment, the first roll forming assembly 13 includes a first upper calendering roll 131 and a first lower calendering roll 132 arranged vertically and opposite to each other, with the first upper calendering roll 131 located directly above the first lower calendering roll 132. The second roll forming assembly 14 includes a second upper calendering roll 141 and a second lower calendering roll 142 arranged vertically and opposite to each other, with the second upper calendering roll 141 located directly above the second lower calendering roll 142. The traction roll assembly 15 includes an upper traction roll 151 and a lower traction roll 152 arranged vertically and opposite to each other, with the upper traction roll 151 located directly above the lower traction roll 152.

[0050] The lower protective film 31 unwound by the lower protective film unwinding device 11 can flow sequentially between the upper surface of the resin placement platform 12, between the first upper calendering roller 131 and the first lower calendering roller 132, between the second upper calendering roller 141 and the second lower calendering roller 142, and between the upper traction roller 151 and the lower traction roller 152 before connecting to the finished product winding device 16. The first intermediate film 4 unwound by the first intermediate film winding and unwinding device 17 can flow between the first upper calendering roller 131 and the first lower calendering roller 132 before flowing back to the first intermediate film winding and unwinding device 17. The base film 321 unwound by the base film unwinding device 18 can flow between the second upper calendering roller 141 and the second lower calendering roller 142. The second intermediate film 5 unwound by the second intermediate film winding and unwinding device 19 can flow between the second upper calendering roller 141 and the second lower calendering roller 142 before flowing back to the second intermediate film winding and unwinding device 19. The upper protective film 33 unwound by the upper protective film unwinding device 20 can flow between the upper traction roller 151 and the lower traction roller 152.

[0051] like Figures 1 to 4 As shown, in one embodiment, the first roll forming assembly 13 further includes a first driving device 134, which is connected to the first upper calendering roll 131 and the first lower calendering roll 132. The first driving device 134 is used to drive the first upper calendering roll 131 and the first lower calendering roll 132 to rotate along the flow direction S of the lower protective film 31 (specifically, from...). Figure 4 From the perspective of the first drive device 134, the first upper calendering roller 131 rotates counterclockwise and the first lower calendering roller 132 rotates clockwise.

[0052] The second roll forming assembly 14 also includes a second drive device 144, which is connected to the second upper calendering roll 141 and the second lower calendering roll 142. The second drive device 144 is used to drive the second upper calendering roll 141 and the second lower calendering roll 142 to rotate along the flow direction S of the lower protective film 31 (specifically, from...). Figure 4 From the perspective of the second drive device 144, the second upper calendering roller 141 rotates counterclockwise and the second lower calendering roller 142 rotates clockwise.

[0053] The traction roller assembly 15 also includes a third drive device (not shown), which is connected to the upper traction roller 151 and the lower traction roller 152. The third drive device is used to drive the upper traction roller 151 and the lower traction roller 152 to rotate along the flow direction S of the lower protective film 31 (specifically, from...). Figure 4 From the perspective of the middle, the third driving device drives the upper traction roller 151 to rotate counterclockwise and the lower traction roller 152 to rotate clockwise.

[0054] like Figures 1 to 4 As shown, in one embodiment, the first roll forming assembly 13 further includes a first spacing adjustment device 133. The first upper calendering roll 131 and / or the first lower calendering roll 132 are connected to the machine base 10 through the first spacing adjustment device 133. The first spacing adjustment device 133 is used to adjust the distance between the first upper calendering roll 131 and the first lower calendering roll 132 to adapt to different film thickness requirements. The first spacing adjustment device 133 can be a manual spacing adjustment device (e.g., using a handwheel to drive the first upper calendering roll 131 and / or the first lower calendering roll 132 to move up and down) or a driven spacing adjustment device (e.g., using a cylinder, electric cylinder, or other equipment to drive the first upper calendering roll 131 and / or the first lower calendering roll 132 to move up and down).

[0055] The second roll forming assembly 14 also includes a second spacing adjustment device 143. The second upper calendering roll 141 and / or the second lower calendering roll 142 are connected to the machine base 10 via the second spacing adjustment device 143. The second spacing adjustment device 143 is used to adjust the distance between the second upper calendering roll 141 and the second lower calendering roll 142 to adapt to different film thickness requirements. The second spacing adjustment device 143 can be a manual spacing adjustment device or a driven spacing adjustment device, etc.

[0056] The traction roller assembly 15 also includes a third adjusting device 153, through which the upper traction roller 151 and / or the lower traction roller 152 are connected to the machine base 10. The third adjusting device 153 is used to adjust the distance between the upper traction roller 151 and the lower traction roller 152 to accommodate different film thickness requirements. The third adjusting device 153 can be a manual adjusting device or a driven adjusting device, etc.

[0057] In one implementation, the first upper calendering roll 131, the first lower calendering roll 132, the second upper calendering roll 141, and the second lower calendering roll 142 are all made of alloy steel, specifically 9Cr3Mo, and are chrome-plated and then mirror-polished to improve surface smoothness, thereby improving the smoothness and thickness uniformity of the film layer. The calendering tolerance (accuracy) of this structure can reach ±0.01mm.

[0058] like Figures 1 to 4As shown, in one embodiment, the first intermediate film unwinding and winding device 17 includes a first intermediate film unwinding device 171 and a first intermediate film winding device 172. The first intermediate film unwinding device 171 is used to unwind the first intermediate film 4, and the first intermediate film winding device 172 is used to wind the first intermediate film 4. The first intermediate film 4 unwound by the first intermediate film unwinding device 171 is connected to the first intermediate film winding device 172 after passing between the first upper calendering roller 131 and the first lower calendering roller 132.

[0059] like Figures 1 to 4 As shown, in one embodiment, the first intermediate film unwinding device 171 and the first intermediate film winding device 172 are both located above the first roll forming assembly 13 (specifically above the first upper calendering roller 131 and the first lower calendering roller 132). Along the flow direction S of the lower protective film 31, the first intermediate film unwinding device 171 is located upstream of the first intermediate film winding device 172 (i.e., the first intermediate film unwinding device 171 is located in front of the first intermediate film winding device 172), and both the first intermediate film unwinding device 171 and the first intermediate film winding device 172 are located downstream of the first roll forming assembly 13 (i.e., both the first intermediate film unwinding device 171 and the first intermediate film winding device 172 are located behind the first roll forming assembly 13); This arrangement allows the upper end of the first intermediate film 4 to tilt towards the side closer to the second roller assembly 14 during unwinding and rewinding (i.e., the upper end of the first intermediate film 4 can tilt backwards compared to its lower end), thereby facilitating the separation of the first intermediate film 4 from the calendered adhesive film 322 (since the adhesive film 322 has high viscosity, unwinding and rewinding the first intermediate film 4 at an angle towards the rear facilitates the separation of the first intermediate film 4 from the adhesive film 322).

[0060] Specifically, in this embodiment, the first intermediate film unwinding device 171 includes a first unwinding shaft (not labeled in the figure), which is located above the first roller pressing assembly 13 and is connected to the machine base 10 via a first bracket 173. The first intermediate film winding device 172 includes a first roll shaft (not labeled in the figure) and a first rotary drive device 175. The first roll shaft is located above the first roller pressing assembly 13 and is connected to the machine base 10 via a second bracket 174. The first rotary drive device 175 is connected to the first roll shaft and is used to drive the first roll shaft to rotate. In use, the first intermediate film roll (not labeled in the figure) can be sleeved on the first unwinding shaft. The first intermediate film 4 in the first intermediate film roll passes between the first upper calendering roller 131 and the first lower calendering roller 132 and is then wound onto the first roll shaft. At the same time, the first rotary drive device 175 drives the first roll shaft to rotate, thereby unwinding and winding the first intermediate film 4.

[0061] like Figures 1 to 4As shown, in one embodiment, the second intermediate film unwinding and winding device 19 includes a second intermediate film unwinding device 191 and a second intermediate film winding device 192. The second intermediate film unwinding device 191 is used to unwind the second intermediate film 5, and the second intermediate film winding device 192 is used to wind the second intermediate film 5. The second intermediate film 5 unwound by the second intermediate film unwinding device 191 is connected to the second intermediate film winding device 192 after passing between the second upper calendering roller 141 and the second lower calendering roller 142.

[0062] like Figures 1 to 4 As shown, in one embodiment, the base film unwinding device 18, the second intermediate film unwinding device 191, and the second intermediate film winding device 192 are all located above the second roll forming assembly 14 (specifically above the second upper calendering roll 141 and the second lower calendering roll 142). Furthermore, along the flow direction S of the lower protective film 31, the second intermediate film unwinding device 191 is located upstream of the second intermediate film winding device 192, and the base film unwinding device 18 is located upstream of the second intermediate film unwinding device 191; thus, the base film 321 can be unwound and laid on the adhesive film 322 first, and then the second intermediate film 5 can be unwound and laid.

[0063] like Figures 1 to 4 As shown, in one embodiment, along the flow direction S of the lower protective film 31, the base film unwinding device 18 and the second intermediate film unwinding device 191 are both located upstream of the second rolling assembly 14, and the second intermediate film winding device 192 is located downstream of the second rolling assembly 14. Since the second intermediate film 5 can be easily separated from the fiber composite layer 32, the second intermediate film unwinding device 19 does not need to adopt a special arrangement similar to the first intermediate film unwinding device 17 described above. Of course, in other embodiments, the base film unwinding device 18 and the second intermediate film unwinding device 191 can also be located downstream of the second rolling assembly 14.

[0064] Specifically, in this embodiment, the base film unwinding device 18 includes a second unwinding shaft (not labeled in the figure), which is located above the second roller pressing assembly 14. The second unwinding shaft is connected to the machine base 10 through a third bracket 181. In use, the base film roll (not labeled in the figure) can be sleeved on the second unwinding shaft. The base film 321 in the base film roll passes between the second upper calendering roller 141 and the second lower calendering roller 142, and flows backward under the traction of the second roller pressing assembly 14 and the traction roller assembly 15, thereby realizing the unwinding of the base film 321.

[0065] The second intermediate film unwinding device 191 includes a third unwinding shaft (not labeled in the figure), which is located above the second roller pressing assembly 14 and connected to the machine base 10 via a fourth bracket 193. The second intermediate film winding device 192 includes a second roll shaft (not labeled in the figure) and a second rotary drive device 195. The second roll shaft is located above the second roller pressing assembly 14 and connected to the machine base 10 via a fifth bracket 194. The second rotary drive device 195 is connected to the second roll shaft and is used to drive the second roll shaft to rotate. In use, the second intermediate film roll (not labeled in the figure) can be placed on the third unwinding shaft. The second intermediate film 5 in the second intermediate film roll passes between the second upper calendering roller 141 and the second lower calendering roller 142 and is then wound onto the second roll shaft. At the same time, the second rotary drive device 195 drives the second roll shaft to rotate, thereby unwinding and winding the second intermediate film 5.

[0066] like Figures 1 to 4 As shown, in one embodiment, the upper protective film unwinding device 20 is located above the upper traction roller 151 and the lower traction roller 152; and along the flow direction S of the lower protective film 31, the upper protective film unwinding device 20 is located upstream of the traction roller assembly 15. Of course, in other embodiments, the upper protective film unwinding device 20 may also be located downstream of the traction roller assembly 15.

[0067] Specifically, in this embodiment, the upper protective film unwinding device 20 includes a fourth unwinding shaft (not labeled in the figure), which is located above the upper traction roller 151 and the lower traction roller 152. The fourth unwinding shaft is connected to the machine base 10 through a sixth bracket 201. In use, the upper protective film roll (not labeled in the figure) can be sleeved on the fourth unwinding shaft. The upper protective film 33 in the upper protective film roll passes between the upper traction roller 151 and the lower traction roller 152 and flows backward under the traction of the traction roller assembly 15, thereby realizing the unwinding of the upper protective film 33.

[0068] like Figures 1 to 4As shown, in one embodiment, the lower protective film feeding device 11 includes two spaced-apart brackets 111, both of which are fixedly connected to the machine base 10 (of course, in other embodiments, the lower protective film feeding device 11 can also have other structures). The finished product winding device 16 includes a third roll shaft (not labeled) and a third rotary drive device (not shown). The third rotary drive device is connected to the third roll shaft and is used to drive the third roll shaft to rotate. In use, the two ends of the lower protective film roll (not labeled in the figure) can be hung on two hangers 111 respectively. The lower protective film 31 in the lower protective film roll passes sequentially through the upper surface of the resin placement platform 12, between the first upper calendering roller 131 and the first lower calendering roller 132, between the second upper calendering roller 141 and the second lower calendering roller 142, and between the upper traction roller 151 and the lower traction roller 152, and is then pre-wound onto the third roll shaft. At the same time, the third rotary drive device drives the third roll shaft to rotate. Under the traction of the first roller pressing assembly 13, the second roller pressing assembly 14, the traction roller assembly 15 and the third rotary drive device, the lower protective film 31 is unwound and the fiber composite material 3 is wound up.

[0069] like Figures 1 to 4 As shown, in one embodiment, the machine base 10 is provided with a support platform 21. The support platform 21 is used to support the lower protective film 31 unwound by the lower protective film unwinding device 11 (that is, the lower protective film 31 can flow along the upper surface of the support platform 21 to avoid the lower protective film 31 and the calendered film layer being suspended). Both the support platform 21 and the resin placement platform 12 are horizontally arranged. The support platform 21 is located between the resin placement platform 12 and the finished product winding device 16 (that is, the support platform 21 is located behind the resin placement platform 12). The front end of the support platform 21 is connected to the resin placement platform 12, and the upper surface of the support platform 21 is flush with the upper surface of the resin placement platform 12 (that is, there is no step at the junction of the two to ensure the flatness of the lower protective film 31).

[0070] The support platform 21 passes through the space between the first upper calendering roll 131 and the first lower calendering roll 132, between the second upper calendering roll 141 and the second lower calendering roll 142, and between the upper traction roll 151 and the lower traction roll 152. The support platform 21 has clearance openings 211 corresponding to the positions of the first roll forming assembly 13, the second roll forming assembly 14, and the traction roll assembly 15. These clearance openings 211 extend vertically through the support platform 21 and axially along each calendering roll / traction roll. Through these clearance openings 211, the first lower calendering roll 132, the second lower calendering roll 142, and the lower traction roll 152 can contact the lower protective film 31, thereby enabling the roll forming of the corresponding film layers.

[0071] like Figures 1 to 4As shown, in one embodiment, the lower protective film feeding device 11 is disposed below the resin placement platform 12. A first steering roller 22 is provided on the base 10, located in front of the resin placement platform 12. The upper surface of the first steering roller 22 is flush with the upper surface of the resin placement platform 12 (i.e., there is no step between them to ensure the flatness of the lower protective film 31). The lower protective film 31 unwound by the lower protective film feeding device 11 can flow to the upper surface of the resin placement platform 12 after being turned by the first steering roller 22. This configuration serves two purposes. First, since the lower protective film feeding device 11 is positioned below the resin placement platform 12, it shortens the length of the fiber composite material preparation device 1 in the front-to-back direction (if the lower protective film feeding device 11 is positioned in front of the resin placement platform 12, the length of the fiber composite material preparation device 1 will be extended), reducing the space occupied by the equipment. Second, since the lower protective film feeding device 11 is positioned below the resin placement platform 12 and is turned by the first steering roller 22, the lower protective film 31 can have a certain film tension and adhere to the upper surface of the resin placement platform 12 (i.e., the lower protective film feeding device 11 will exert a certain downward pulling force on the lower protective film 31, so that the lower protective film 31 can be tensioned), ensuring that the film surface of the lower protective film 31 is flat, thereby ensuring the uniformity of film thickness and flatness of the product.

[0072] like Figures 1 to 4 As shown, in one embodiment, the base 10 is provided with a second steering roller 23, which is located behind the support platform 21, and the upper surface of the second steering roller 23 is flush with the upper surface of the support platform 21. The pressed fiber composite material 3 can be turned by the second steering roller 23 and then connected to the finished product winding device 16.

[0073] like Figures 1 to 4 As shown, in one embodiment, the resin placement platform 12 is a heating platform with a heating function, and the heating function of the resin placement platform 12 can be turned on and off, allowing the resin placement platform 12 to heat the resin material. Specifically, before the resin material is rolled using the first roller pressing assembly 13, the resin material needs to be heated and softened to give it a certain degree of fluidity (therefore, the lower protective film 31 also needs to have good high-temperature resistance). However, in actual use, the resin material may not have been heated and softened before being placed on the resin placement platform 12 (for example, the resin material is taken directly from the cold storage for use). Therefore, in this case, the heating function of the resin placement platform 12 can be turned on to heat and soften the resin material. Of course, once the resin material has been heated and softened, it is not necessary to turn on the heating function of the resin placement platform 12.

[0074] In one implementation, the machine base 10 is also equipped with a scraper assembly (not shown). The scraper assembly is positioned corresponding to the resin placement platform 12. The scraper assembly can scrape and press the resin material placed on the resin placement platform 12, so that the resin material is pre-spread evenly on the surface of the lower protective film 31, thereby facilitating the subsequent rolling of the resin material into a film. It should be noted that when the viscosity of the resin material is low (i.e., the fluidity is good), the scraper assembly can be set to pre-scrape and press the resin material; however, when the viscosity of the resin material is high (i.e., the fluidity is poor), the scraper assembly can no longer scrape the resin material evenly (i.e., the scraping effect of the scraper assembly is poor), so there is no need to set up a scraper assembly, and the resin material is mainly rolled into a film by the subsequent rolling step.

[0075] like Figures 1 to 4 As shown, in one embodiment, the finished product winding device 16 can move back and forth relative to the traction roller assembly 15 (i.e., the position of the finished product winding device 16 is not fixed) to adjust the distance between the finished product winding device 16 and the traction roller assembly 15. Specifically, since the pressed fiber composite material 3 has a certain temperature, if the finished product winding device 16 is used directly to wind the fiber composite material 3, the temperature of the wound fiber composite material 3 will be high, which may cause problems such as expansion and deformation of the fiber composite material 3, affecting the performance of the product. Therefore, in this embodiment, the finished product winding device 16 is set to be movable back and forth. By adjusting the distance between the finished product winding device 16 and the traction roller assembly 15, the contact time between the fiber composite material 3 and the low-temperature air is adjusted (i.e., the greater the distance between the finished product winding device 16 and the traction roller assembly 15, the longer the contact time between the fiber composite material 3 and the low-temperature air, and the better the cooling effect), so that the temperature of the fiber composite material 3 is reduced to a suitable temperature, thereby achieving cooling of the fiber composite material 3. Moreover, there is no need to use cooling equipment, which can reduce equipment costs and operating costs.

[0076] Specifically, in this embodiment, the base 10 includes a movable seat 101, which is located behind the main body of the base 10 and is separately disposed from the main body of the base 10 (i.e., the two are not connected together). The finished product winding device 16 is disposed on the movable seat 101. By adjusting the front and rear position of the movable seat 101, the distance between the finished product winding device 16 and the traction roller assembly 15 can be adjusted. Of course, in other embodiments, a slide rail (not shown) or other device can also be provided to realize the front and rear movement of the finished product winding device 16 (for example, a slide rail that can move back and forth is provided, the finished product winding device 16 is disposed on the slide rail, and the front and rear movement of the slide rail drives the finished product winding device 16 to move back and forth).

[0077] This invention also provides a method for preparing fiber composite materials based on the above-described fiber composite material preparation apparatus 1, comprising the following steps:

[0078] The lower protective film 31 is unwound using the lower protective film unwinding device 11; the lower protective film 31 unwound by the lower protective film unwinding device 11 flows sequentially through the upper surface of the resin placement platform 12, between the first upper calendering roller 131 and the first lower calendering roller 132 in the first roller pressing assembly 13, between the second upper calendering roller 141 and the second lower calendering roller 142 in the second roller pressing assembly 14, and between the upper traction roller 151 and the lower traction roller 152 in the traction roller assembly 15, and then connects to the finished product winding device 16.

[0079] The softened resin material is placed on the lower protective film 31 on the surface of the resin placement platform 12; at the same time, the resin material can be heated (or not heated) using the resin placement platform 12 according to actual needs.

[0080] The first intermediate film 4 is unwound and wound up using the first intermediate film unwinding device 171 and the first intermediate film winding device 172 in the first intermediate film unwinding and winding device 17. The first intermediate film 4 unwound by the first intermediate film unwinding device 171 passes between the first upper calendering roller 131 and the first lower calendering roller 132 and is connected to the first intermediate film winding device 172. The resin material is calendered under the protection of the first intermediate film 4 using the first upper calendering roller 131 and the first lower calendering roller 132 in the first roll pressing assembly 13, thereby forming an adhesive film 322 on the lower protective film 31.

[0081] The base film 321 is unwound using the base film unwinding device 18, and the base film 321 unwound by the base film unwinding device 18 flows between the second upper calendering roller 141 and the second lower calendering roller 142; the second intermediate film 5 is unwound and wound up using the second intermediate film unwinding device 191 and the second intermediate film winding device 192 in the second intermediate film unwinding device 191, and the second intermediate film 5 unwound by the second intermediate film unwinding device 191 is connected to the second intermediate film winding device 192 after passing between the second upper calendering roller 141 and the second lower calendering roller 142; the base film 321 and the adhesive film 322 are calendered and laminated under the protection of the second intermediate film 5 using the second upper calendering roller 141 and the second lower calendering roller 142 in the second roll forming assembly 14, thereby forming a fiber composite material layer 32 on the lower protective film 31;

[0082] The upper protective film 33 is unwound using the upper protective film unwinding device 20. The unwound upper protective film 33 flows between the upper traction roller 151 and the lower traction roller 152. The upper protective film 33 and the fiber composite material layer 32 are rolled together by the upper traction roller 151 and the lower traction roller 152 in the traction roller assembly 15 to form the fiber composite material 3, and the fiber composite material 3 is pulled and flowed.

[0083] The pressed fiber composite material 3 is wound up using the finished product winding device 16.

[0084] The fiber composite material preparation apparatus 1 provided in this embodiment of the invention, by setting a first roller pressing assembly 13, a lower protective film unwinding device 11, and a first intermediate film winding and unwinding device 17, can calender the resin material under the protection of the first intermediate film 4 to form an adhesive film 322 on the lower protective film 31; by setting a second roller pressing assembly 14, a base film unwinding device 18, and a second intermediate film winding and unwinding device 19, can calender and composite the base film 321 and the adhesive film 322 under the protection of the second intermediate film 5 to form a fiber composite material layer 32; by setting a traction roller assembly 15 and an upper protective film unwinding device 20, can roll-press and composite the upper protective film 33 and the fiber composite material layer 32 to form a fiber composite material 3, thereby integrating the original coating and impregnation processes into one step (process), greatly improving production efficiency.

[0085] Meanwhile, since the first intermediate film unwinding and rewinding device 17 can unwind and rewind the first intermediate film 4, and the second intermediate film unwinding and rewinding device 19 can unwind and rewind the second intermediate film 5, the first intermediate film 4 and the second intermediate film 5 can use PET release films with good flatness during the lamination process. This ensures that the pressed fiber composite material layer 32 has good flatness and thickness consistency, and the more expensive first intermediate film 4 and the second intermediate film 5 can be recycled and reused after rewinding. After lamination, the upper protective film 33 can be laminated with the fiber composite material layer 32 using a lower-cost ordinary release film (since the fiber composite material layer 32 has been pressed, the upper protective film 33 only protects the fiber composite material layer 32 and does not affect the surface flatness of the fiber composite material layer 32). In this way, not only can the product quality of the fiber composite material 3 be guaranteed, but the production cost can also be greatly reduced.

[0086] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A fiber composite material preparation apparatus for preparing a fiber composite material (3), the fiber composite material (3) comprising a lower protective film (31), a fiber composite material layer (32), and an upper protective film (33) stacked sequentially, characterized in that, The fiber composite material preparation device (1) comprises a machine base (10); a lower protective film unwinding device (11), a resin placing platform (12), a first roller pressing assembly (13), a second roller pressing assembly (14), a traction roller assembly (15) and a finished product winding device (16) are sequentially arranged on the machine base (10) along the flow direction (S) of the lower protective film (31); A first intermediate film winding and unwinding device (17), a base film unwinding device (18), a second intermediate film winding and unwinding device (19) and an upper protective film unwinding device (20) are further arranged on the machine base (10), the first intermediate film winding and unwinding device (17) is arranged corresponding to the first roller pressing assembly (13), the base film unwinding device (18) and the second intermediate film winding and unwinding device (19) are both arranged corresponding to the second roller pressing assembly (14), and the upper protective film unwinding device (20) is arranged corresponding to the traction roller assembly (15); The lower protective film unwinding device (11) is used for unwinding the lower protective film (31); the resin placing platform (12) is used for carrying and placing the resin material on the lower protective film (31); The first intermediate film winding and unwinding device (17) is used for unwinding and winding the first intermediate film (4); the first roller pressing assembly (13) is used for calendering the resin material under the protection of the first intermediate film (4) to form a rubber film (322) on the lower protective film (31); The base film unwinding device (18) is used for unwinding the base film (321), and the second intermediate film winding and unwinding device (19) is used for unwinding and winding the second intermediate film (5); the second roller pressing assembly (14) is used for calendering and compounding the base film (321) and the rubber film (322) under the protection of the second intermediate film (5) to form a fiber composite material layer (32) on the lower protective film (31); The upper protective film unwinding device (20) is used for unwinding the upper protective film (33); the traction roller assembly (15) is used for roller pressing and compounding the upper protective film (33) and the fiber composite material layer (32) to form a fiber composite material (3), and the fiber composite material (3) is pulled; and the finished product winding device (16) is used for winding the fiber composite material (3).

2. The fiber composite material production apparatus according to claim 1, wherein The first roller pressing assembly (13) comprises a first upper calendering roller (131) and a first lower calendering roller (132) arranged oppositely, the second roller pressing assembly (14) comprises a second upper calendering roller (141) and a second lower calendering roller (142) arranged oppositely, and the traction roller assembly (15) comprises an upper traction roller (151) and a lower traction roller (152) arranged oppositely. The lower protective film (31) unwound by the lower protective film unwinding device (11) can flow through the upper surface of the resin placing platform (12), between the first upper and lower calendering rollers (131, 132), between the second upper and lower calendering rollers (141, 142), and between the upper and lower traction rollers (151, 152) in sequence, and is connected with the finished product winding device (16); the base film (321) unwound by the base film unwinding device (18) can flow through between the second upper and lower calendering rollers (141, 142), and the upper protective film (33) unwound by the upper protective film unwinding device (20) can flow through between the upper and lower traction rollers (151, 152).

3. The fiber composite material production apparatus according to claim 2, wherein The first intermediate film unwinding and winding device (17) comprises a first intermediate film unwinding device (171) and a first intermediate film winding device (172), the first intermediate film unwinding device (171) is used for unwinding the first intermediate film (4), and the first intermediate film winding device (172) is used for winding the first intermediate film (4); the first intermediate film (4) unwound by the first intermediate film unwinding device (171) is connected with the first intermediate film winding device (172) after passing between the first upper and lower calendering rollers (131, 132).

4. The fiber composite material production apparatus according to claim 3, wherein The first intermediate film unwinding and winding device (17) comprises a first intermediate film unwinding device (171) and a first intermediate film winding device (172), the first intermediate film unwinding device (171) is used for unwinding the first intermediate film (4), and the first intermediate film winding device (172) is used for winding the first intermediate film (4); the first intermediate film (4) unwound by the first intermediate film unwinding device (171) is connected with the first intermediate film winding device (172) after passing between the first upper and lower calendering rollers (131, 132).

5. The fiber composite material production apparatus according to claim 2, wherein The first intermediate film unwinding and winding device (17) comprises a first intermediate film unwinding device (171) and a first intermediate film winding device (172), the first intermediate film unwinding device (171) is used for unwinding the first intermediate film (4), and the first intermediate film winding device (172) is used for winding the first intermediate film (4); the first intermediate film (4) unwound by the first intermediate film unwinding device (171) is connected with the first intermediate film winding device (172) after passing between the first upper and lower calendering rollers (131, 132). The second intermediate film unwinding and winding device (19) comprises a second intermediate film unwinding device (191) and a second intermediate film winding device (192), the second intermediate film unwinding device (191) is used for unwinding the second intermediate film (5), and the second intermediate film winding device (192) is used for winding the second intermediate film (5); the second intermediate film (5) unwound by the second intermediate film unwinding device (191) is connected with the second intermediate film winding device (192) after passing between the second upper and lower calendering rollers (141, 142).

6. The fiber composite material production apparatus according to claim 5, wherein The base film unwinding device (18), the second intermediate film unwinding device (191) and the second intermediate film winding device (192) are all located above the second roller pressing assembly (14); and along the flow direction (S) of the lower protective film (31), the second intermediate film unwinding device (191) is located upstream of the second intermediate film winding device (192), and the base film unwinding device (18) is located upstream of the second intermediate film unwinding device (191).

7. The fiber composite material production apparatus according to claim 2, wherein The machine base (10) is provided with a support platform (21) for supporting the lower protective film (31) unwound by the lower protective film unwinding device (11); the support platform (21) is located between the resin placing platform (12) and the finished product winding device (16), the front end of the support platform (21) is connected with the resin placing platform (12); the support platform (21) passes through between the first upper calender roller (131) and the first lower calender roller (132), between the second upper calender roller (141) and the second lower calender roller (142), and between the upper traction roller (151) and the lower traction roller (152), and the support platform (21) is provided with an avoiding opening (211) corresponding to the positions of the first roller pressing assembly (13), the second roller pressing assembly (14) and the traction roller assembly (15).

8. The fiber composite material production apparatus according to claim 1, wherein The resin placing platform (12) is a heating platform with heating function, which can heat the resin material.

9. The fiber composite material production apparatus according to claim 1, wherein The lower protective film unwinding device (11) is arranged below the resin placing platform (12); the machine base (10) is provided with a first deflection roller (22) located in front of the resin placing platform (12), and the upper surface of the first deflection roller (22) is flush with the upper surface of the resin placing platform (12); the lower protective film (31) unwound by the lower protective film unwinding device (11) can flow to the upper surface of the resin placing platform (12) after being deflected by the first deflection roller (22).

10. The fiber composite material production apparatus according to any one of claims 1 to 9, characterized by, The finished product winding device (16) can move forward and backward relative to the traction roller assembly (15) to adjust the distance between the finished product winding device (16) and the traction roller assembly (15).

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