Composite material forming equipment and forming method

Abstract

The present application relates to the field of composite material molding, and in particular to a composite material molding device and molding method, comprising a box body, on which an opening and closing device, a heating device, a vacuum device and a mold are installed, the heating device comprising a heating table and a heating mechanism, both of which are installed on the box body, and the heating mechanism is connected to the heating table, the mold is installed on the heating table, and the mold is used to shape the product, the vacuum device is also connected to the heating table, a silicone film is installed on the opening and closing device, and the silicone film is used to cover the mold, and the opening and closing device is used to close the heating table. The present application improves the problem of low molding and processing efficiency of composite material products in traditional methods, and can achieve the effect of improving the molding efficiency of the product.

Description

Technical Field

[0001] The present application relates to the field of composite material molding, and in particular to a composite material molding device and a molding method. Background Art

[0002] In recent years, composite materials, especially carbon fiber composite materials, have been widely used in the automotive industry. However, due to the complexity of materials and processes, the products are expensive and difficult to use widely.

[0003] At present, autoclaves are commonly used in product molding equipment. Since autoclave equipment is expensive and requires the use of more auxiliary materials, such as vacuum bags and breathable felts, which are disposable materials, the processing cost of the product is high. In addition, in the traditional way, the heating for product molding is to increase the temperature in the autoclave through air circulation heating, so as to achieve the purpose of heating and curing the composite material.

[0004] However, the method of increasing the temperature in the autoclave by air circulation heating takes a long time to heat up and consumes a lot of energy, which results in a low molding efficiency of the product. Summary of the invention

[0005] In order to improve the molding efficiency of a product, the present application provides a composite material molding device and a molding method.

[0006] In the first aspect, the present application provides a composite material molding device, which adopts the following technical solution:

[0007] A composite material molding device comprises a box body, on which an opening and closing device, a heating device, a vacuum device and a mold are installed, the heating device comprises a heating table and a heating mechanism, both of which are installed on the box body, and the heating mechanism is connected to the heating table, the mold is installed on the heating table, and the mold is used to shape the product, the vacuum device is also connected to the heating table, a silicone film is installed on the opening and closing device, and the silicone film is used to cover the mold, and the opening and closing device is used to close the heating table.

[0008] By adopting the above technical solution, by laying the composite material sheet on the mold, and then placing the entire mold on the heating table, the heating table is closed by the opening and closing device, so that the silicone film covers the entire mold, and the space under the silicone film is evacuated by the vacuum device, so that the silicone film can be pressed against the composite material sheet, and then the heating table is directly heated by the heating mechanism, so that the entire mold is heated by the heating table to achieve the curing and molding of the composite material product. On the one hand, by directly heating the heating table, the heat is transferred to the entire mold, which improves the heating efficiency, so as to improve the molding efficiency of the product. On the other hand, by providing a reusable silicone film, instead of traditional disposable breathable felt, isolation film, vacuum bag and other auxiliary materials, it is convenient to save costs.

[0009] In a specific possible implementation scheme, a heating pipeline is provided in the heating table, and the heating mechanism includes an oil temperature machine, which is arranged on one side of the box and connected to the heating pipeline. The oil temperature machine is used to heat the heating agent and transport the heating agent to the heating pipeline.

[0010] By adopting the above technical solution, when the product needs to be heated and formed, the oil temperature machine heats the heating agent and transports the heated heating agent to the heating pipeline, so that the heating agent transfers the heat to the heating table, thereby increasing the temperature of the heating table, and the heating table transfers the temperature to the mold and the product, thereby facilitating rapid heating and improving heating efficiency.

[0011] In a specific possible implementation manner, the heating device further comprises a heater, which is installed in the opening and closing device, and the heater is used to increase the air temperature in the area above the silicone membrane.

[0012] By adopting the above technical solution, by arranging a heater in the opening and closing device, it is convenient to heat the air above the silicone film after the opening and closing device closes the heating platform, so that the heat is transferred to the mold and the product through the air, thereby facilitating further improving the heating efficiency.

[0013] In a specific feasible implementation scheme, the vacuum extraction device includes a vacuum pump and a vacuum tube, a plurality of guide grooves are provided on the heating platform, and a plurality of exhaust holes are provided on the heating platform, one end of the exhaust hole is connected to the guide groove, the vacuum pump is installed in a box, one end of the vacuum tube is connected to the vacuum pump, and the other end is connected to the end of the exhaust hole away from the guide groove.

[0014] By adopting the above technical solution, the vacuum pump draws air from the exhaust hole through the vacuum tube, so that the air below the silicone film on the heating table is sucked away, thereby forming a vacuum state, so that the silicone film can press the composite material sheet tightly against the mold, thereby facilitating the molding of the product.

[0015] In a specific possible implementation scheme, the opening and closing device includes an upper cover and a driving member, one end of the upper cover is rotatably mounted on the top wall of the box body, and the upper cover is used to close the heating table, the driving member is mounted on the box body, and the driving member is connected to the upper cover, and the driving member is used to drive the upper cover to open and close.

[0016] By adopting the above technical solution, the upper cover is driven to rotate by the driving member, so that the upper cover is buckled on the heating table, thereby achieving the closure of the heating table, thereby facilitating the molding process of the product.

[0017] In a specific feasible implementation scheme, the opening and closing device also includes a clamping mechanism, which includes a positioning clamp, an upper clamping frame, a clamping frame and a lower clamping frame, the upper clamping frame and the lower clamping frame are both installed on the upper cover, and a gap is left between the upper clamping frame and the lower clamping frame, the positioning clamp is installed on the side wall of the lower clamping frame, and the positioning clamp is also connected to the upper clamping frame, the clamping frame is installed on the upper clamping frame, and the clamping frame is located between the upper clamping frame and the lower clamping frame, and the clamping frame and the lower clamping frame are used to clamp the silicone membrane.

[0018] By adopting the above technical solution, the entire silicone film is placed on the upper cover, and the edge of the silicone film is located between the clamping frame and the lower clamping frame. The upper clamping frame is then pressed against the upper clamping frame by the positioning clamp to deform the upper clamping frame and squeeze the clamping frame, so that the clamping block and the lower clamping frame clamp the edge of the silicone film, thereby facilitating the molding process of the product.

[0019] In a specific feasible implementation scheme, the opening and closing device also includes a clamping mechanism, a winding mechanism and a control mechanism, the clamping mechanism includes a positioning assembly and a propping assembly, the positioning assembly includes a positioning frame, a clamping plate, a clamping spring and a support plate, the positioning frame is installed on the upper cover, a support rod is installed on the clamping plate, and the clamping plate is installed on the positioning frame through the support rod, and a gap is left between the clamping plate and the positioning frame for placing the silicone film, and the clamping plate is used to press the silicone film, the support plate is installed on the end of the support rod away from the clamping plate, the clamping spring is installed on the support rod, and one end of the clamping spring is connected to the positioning frame, and the other end is connected to the support plate, the propping assembly is installed on the positioning frame, and the propping assembly is connected to the support plate, the control mechanism and the winding mechanism are both installed on the upper cover, and the control mechanism is connected to the propping assembly, the winding mechanism is connected to the control mechanism, and the winding mechanism is used to convey the silicone film.

[0020] By adopting the above technical solution, the edge of the silicone film is placed between the clamping plate and the inner bottom wall of the positioning frame, and the support plate is driven downward by the clamping spring, so that the support plate drives the clamping plate through the support rod to press the silicone film on the positioning frame, thereby fixing the silicone film on the upper cover. And when the silicone film needs to be replaced after being used for a period of time, the control mechanism drives the propping component to move, so that the propping component drives the positioning component to loosen the silicone film, and then the control mechanism controls the winding mechanism to wind up the old silicone film and release the new silicone film to the upper cover, so as to facilitate the continuous molding of the product.

[0021] In a specific feasible implementation scheme, the control mechanism includes a driving assembly and a transmission assembly, the driving assembly includes a power piece, a tensioning rod and a pull rope, the power piece and the tensioning rod are both installed on the upper cover, and the power piece is connected to the tensioning rod, one end of the pull rope is connected to the tensioning rod, and the other end is connected to the supporting assembly, the transmission assembly is also installed on the upper cover, and the transmission assembly is connected to the power piece, and the transmission assembly is also connected to the winding mechanism.

[0022] By adopting the above technical solution, the power part drives the tensioning rod to rotate, so that the tensioning rod reels the pull rope, and the pull rope drives the supporting component to move, so that the supporting component props up the support plate, so that the support plate can drive the clamping plate to move upward through the support rod, thereby loosening the silicone film, and then the driving component drives the transmission component to move, so that the transmission component drives the winding mechanism to work, thereby facilitating the replacement of the silicone film.

[0023] In a specific feasible implementation scheme, the transmission assembly includes a transmission rod, a drive gear, a transmission gear and a transmission block, the drive gear and the transmission rod are both mounted on the upper cover, the transmission gear is mounted on the transmission rod, and the drive gear is meshed with the transmission gear, the transmission rod is also connected to the winding mechanism, the transmission block is mounted on the power piece, and the transmission block is used to connect the drive gear to the power piece.

[0024] By adopting the above technical solution, the power piece drives the transmission block to rotate, so that the transmission block drives the driving gear to rotate, thereby driving the transmission gear to rotate, thereby driving the transmission rod to rotate, so that the transmission rod can drive the winding mechanism to operate, thereby facilitating the winding of the old silicone film and the delivery of the new silicone film.

[0025] In a second aspect, the present application also provides a composite material forming method, which adopts the following technical solution:

[0026] A composite material molding method, comprising:

[0027] Step 1: Lay the composite material sheets on the molding die according to the layup design;

[0028] Step 2: Install the mold with the composite material sheet laid in step 1 onto the heating table of the molding equipment as a whole;

[0029] Step 3: Start the opening and closing device to close the upper cover so that the silicone film covers the entire mold;

[0030] Step 4: Start the vacuum pump to achieve a vacuum state between the silicone membrane and the heating platform, and at the same time, introduce air into the air inlet on the upper cover through an external air source to provide positive pressure to the silicone membrane;

[0031] Step 5: Start heating and curing after the vacuum value is reached between the silicone film and the heating table and the positive pressure value is reached in the upper cover. The vacuum value is ≤-0.092MPa, and the positive pressure value range is 0.5-0.8Mpa, which can be adjusted within the range according to the product characteristics.

[0032] In summary, the present application includes at least one of the following beneficial effects:

[0033] The present application provides a heating device to facilitate direct heating of the heating table through the heating mechanism in the heating device, thereby directly transferring heat to the mold as a whole, thereby facilitating improving the efficiency of heat transfer and thus facilitating improving the molding efficiency of the product.

[0034] The present application provides a clamping mechanism to facilitate clamping the silicone film through the clamping mechanism, thereby facilitating keeping the silicone film stably pressed against the entire mold during product molding.

[0035] The present application sets up a clamping mechanism, a winding mechanism and a control mechanism, so that after the control mechanism drives the clamping mechanism to loosen the silicone film, the winding mechanism will wind up the old silicone film and release the new silicone film into the upper cover, thereby maintaining the hot pressing molding effect of the composite material.

[0036] The present application uses a silicone film that does not bind to the resin to replace auxiliary materials such as vacuum bags, breathable felts and isolation films, which greatly reduces the amount of materials used in composite material molding in the context of reusability, thereby reducing product processing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a structural schematic diagram of the composite material molding equipment of the present application.

[0038] Figure 2 It is a schematic diagram of the structure of the vacuum pumping device in Example 1 of the present application.

[0039] Figure 3 It is a cross-sectional view of the heating platform in Example 1 of the present application.

[0040] Figure 4 This is a schematic diagram of the installation of the heater in Example 1 of the present application.

[0041] Figure 5 It is a structural schematic diagram of the clamping mechanism in Example 1 of the present application.

[0042] Figure 6 It is a structural diagram of Example 2 of the present application.

[0043] Figure 7 It is a structural schematic diagram of the clamping release mechanism in Example 2 of the present application.

[0044] Figure 8 It is a structural schematic diagram of the control mechanism in Example 2 of the present application.

[0045] Fig. 9 It is a structural schematic diagram of the driving component in Example 2 of the present application.

[0046] Fig.10 It is an exploded diagram of the drive assembly in Example 2 of the present application.

[0047] Fig.11 It is a structural schematic diagram of the transmission assembly in Example 2 of the present application.

[0048] Fig.12 It is an exploded view of the transmission assembly in Example 2 of the present application.

[0049] Description of reference numerals:

[0050] 1. Box body; 2. Opening and closing device; 21. Upper cover; 211. Air inlet; 22. Driving cylinder; 23. Clamping mechanism; 231. Positioning clamp; 232. Upper clamping frame; 233. Clamping frame; 234. Lower clamping frame; 235. Sealing frame; 24. Loosening mechanism; 2411. Positioning frame; 2412. Clamping plate; 2413. Clamping spring; 2414. Support plate; 2421. First support plate; 2422. Second support plate; 25. Winding mechanism; 251. Winding roller; 252. Winding pulley; 253. Unwinding roller; 254. Unwinding pulley; 26. Control mechanism; 261. Driving assembly; 2611. Driving motor; 2612. Driving shaft; 2613. Tension rod; 2614. Pull rope; 2615. Tension wheel; 2616. Connecting plate; 26 17. Driving column; 2618. Driving plate; 2619. Connecting rack; 26110. Connecting gear; 26120. Wire clip; 262. Transmission assembly; 2621. Transmission rod; 2622. Driving gear; 2623. Transmission gear; 2624. Transmission block; 26241. Insert block; 26242. Guide ring; 26243. Notch; 2625. Bracket; 2626. Driving spring; 2627. Push rod; 2628. Driving pulley; 2629. Mounting frame; 3. Heating device; 31. Heating table; 311. Guide groove; 312. Exhaust hole; 313. Heating pipeline; 32. Heating mechanism; 321. Oil temperature machine; 33. Heater; 4. Vacuuming device; 41. Vacuum pump; 42. Vacuum tube; 5. Mold; 6. Silicone film. DETAILED DESCRIPTION

[0051] The present application is further described in detail below in conjunction with the accompanying drawings. Example 1

[0052] This embodiment discloses a composite material molding device.

[0053] Reference Figure 1 and Figure 2 , including a box body 1, on which are installed an opening and closing device 2, a heating device 3, a vacuum device 4 and a mold 5, the mold 5 is used to shape the product, the heating device 3 is used to heat the mold 5 as a whole, the opening and closing device 2 is also installed with a silicone film 6, the silicone film 6 is used to cover the mold 5 as a whole, the opening and closing device 2 is used to seal the mold 5 and the product, and the vacuum device 4 is used to vacuum the space under the silicone film 6.

[0054] Reference Figure 1 and Figure 2The heating device 3 includes a heating platform 31 and a heating mechanism 32. The heating platform 31 is fixedly mounted on the top wall of the box body 1. The mold 5 is detachably mounted on the heating platform 31. A plurality of guide grooves 311 are provided on the top wall of the heating platform 31. A plurality of exhaust holes 312 are also provided on the top wall of the heating platform 31. The exhaust holes 312 are arranged along the thickness direction of the heating platform 31. One end of the exhaust hole 312 is connected to the guide groove 311, and the other end is connected to the vacuum device 4. Figure 1 and Figure 3 A plurality of heating pipelines 313 are also provided in the heating platform 31. The heating pipelines 313 are located below the guide groove 311, and the heating pipelines 313 are staggered with the air extraction holes 312. The plurality of heating pipelines 313 in the heating platform 31 are interconnected. Figure 1 and Figure 3 The heating mechanism 32 includes an oil temperature machine 321, and the heating agent is heating oil. The oil temperature machine 321 and the heating oil are both existing technologies in the field and will not be elaborated here. The oil temperature machine 321 is used to heat the heating oil and transport it to the heating pipeline 313, thereby increasing the temperature on the heating platform 31.

[0055] Reference Figure 4 The heating device 3 also includes a heater 33, which is a ceramic heater 33. The ceramic heater 33 is a prior art in the art and will not be described in detail here. The ceramic heater 33 is installed in the opening and closing device 2, and the ceramic heater 33 is used to heat the air above the silicone membrane 6 in the opening and closing device 2.

[0056] Reference Figure 2 The vacuum device 4 includes a vacuum pump 41 and a vacuum tube 42. The vacuum pump 41 is fixedly installed in the box body 1. One end of the vacuum tube 42 is connected to the vacuum pump 41, and the other end is connected to the exhaust hole 312. The vacuum pump 41 is a prior art in this field and will not be described in detail here.

[0057] Reference Figure 1 and Figure 2 The opening and closing device 2 includes an upper cover 21 and a driving member, one end of the upper cover 21 is rotatably mounted on the top wall of the box body 1, and the upper cover 21 is used to cover the heating platform 31, and the upper cover 21 is used to close the heating platform 31, and the heater 33 is fixedly mounted on the inner wall of the upper cover 21. The driving member includes an opening and closing cylinder, the cylinder body of the opening and closing cylinder is rotatably mounted in the box body 1, and the other end is rotatably connected to the side wall of the upper cover 21 through a fisheye joint.

[0058] Reference Figure 5The opening and closing device 2 also includes a clamping mechanism 23, which includes a positioning clamp 231, an upper clamping frame 232, a clamping frame 233 and a lower clamping frame 234. The upper clamping frame 232 is fixedly mounted on the bottom wall of the upper cover 21, and the clamping frame 233 is fixedly mounted on the bottom wall of the upper clamping frame 232. The cross-section of the lower clamping frame 234 is L-shaped, and the vertical section of the lower clamping frame 234 is fixedly mounted on the side wall of the upper clamping frame 232 by bolts. The horizontal section of the lower clamping frame 234 extends to the bottom of the clamping frame 233, and a gap is left between the top walls of the horizontal sections of the clamping frame 233 and the lower clamping frame 234 for placing the silicone film 6, and the clamping frame 233 and the lower clamping frame 234 are used to clamp the silicone film 6. The positioning clip 231 is fixedly mounted on the side wall of the lower clamp frame 234, and the clamp head of the positioning clip 231 extends to the top wall of the upper clamp frame 232, and the clamp head of the positioning clip 231 is used to abut against the top wall of the upper clamp frame 232. The positioning clip 231 is a prior art in the field and will not be elaborated here.

[0059] Reference Figure 1 and Figure 4 The side wall of the upper cover 21 is also provided with an air inlet 211, which is connected to an external air source. A sealing frame 235 is also fixedly mounted on the top wall of the heating platform 31, and the top wall of the sealing frame 235 is used to contact the bottom wall of the horizontal section of the lower clamping frame 234, and sealing rings (not shown in the figure) are fixedly mounted on the top and bottom walls of the sealing frame 235, and the sealing rings are used to maintain the sealing between the sealing frame 235 and the heating platform 31, and between the sealing frame 235 and the lower clamping frame 234.

[0060] The working principle of this embodiment is as follows: a whole piece of silicone membrane 6 is placed on the upper cover 21, and the edge of the silicone membrane 6 is between the horizontal sections of the clamping frame 233 and the lower clamping frame 234, and then the positioning clamp 231 is pressed so that the clamping head of the positioning clamp 231 presses the upper clamping frame 232, so that the upper clamping frame 232 presses the clamping frame 233, so that the clamping frame 233 is deformed and presses the silicone membrane 6, so that the silicone membrane 6 is positioned on the upper cover 21.

[0061] When it is necessary to heat and cure the composite material part, after the composite material sheet is laid on the mold 5, the mold 5 is placed as a whole on the heating table 31, and then the upper cover 21 is pulled by the opening and closing cylinder to rotate the upper cover 21 downward, so that the upper cover 21 drives the lower clamping frame 234 to press on the top wall of the sealing frame, and the air tightness between the lower clamping frame 234 and the sealing frame is maintained by the sealing ring. At the same time, the silicone film 6 covers the mold 5, and then the vacuum pump 41 is turned on to allow the vacuum pump 41 to extract the air in the exhaust hole 312 through the vacuum tube 42, so that the space below the silicone film 6 on the heating table 31 is evacuated through the exhaust hole 312, and the silicone film 6 is pressed against the composite material sheet on the mold 5. At the same time, air is introduced into the air inlet 211 through an external air source, thereby increasing the air pressure above the silicone film 6, so that the silicone film 6 is further pressed against the mold 5 and the composite material sheet. Then, the oil temperature machine 321 is turned on, and the heated heating oil is transported to the heating pipeline 313 through the oil temperature machine 321, so as to heat the heating table 31, thereby increasing the temperature of the mold 5 and the temperature inside the upper cover 21. At the same time, the air above the silicone film 6 in the upper cover 21 is heated by the ceramic heater 33, so that the heat is conducted to the mold 5 through the air, thereby realizing the curing molding of the composite material.

[0062] After the product is formed, the heating of the heating table 31 is stopped, the vacuuming of the space below the silicone film 6 is stopped, and the air supply to the upper cover 21 is stopped. The upper cover 21 is driven to open by the driving member, thereby breaking the vacuum state to facilitate unloading of the formed composite material product. Example 2

[0063] The difference between this embodiment and embodiment 1 is that, referring to Figure 6 and Figure 7The opening and closing device 2 also includes a clamping release mechanism 24, a winding mechanism 25 and a control mechanism 26. The clamping release mechanism 24 includes a positioning component and a propping component. The positioning component includes a positioning frame 2411, a clamping plate 2412, a clamping spring 2413 and a support plate 2414. The positioning frame 2411 is rectangular, and the positioning frame 2411 is fixedly installed at the lower end of the side wall of the upper cover 21. A support rod is fixedly installed on the top wall of the clamping plate 2412 in the vertical direction. The clamping plate 2412 is slidably installed in the positioning frame 2411 through the support rod, and the upper end of the support rod passes through the top wall of the positioning frame 2411 and extends upward. A space for placing the silicone film 6 is reserved between the clamping plate 2412 and the inner bottom wall of the positioning frame 2411. The support plate 2414 is fixedly installed on one end of the support rod away from the clamping plate 2412, and the clamping spring 2413 is installed on the support rod. One end of the clamping spring 2413 is fixedly connected to the top wall of the positioning frame 2411, and the other end is fixedly connected to the bottom wall of the support plate 2414. When the bottom wall of the clamping plate 2412 contacts the inner bottom wall of the positioning frame 2411, the clamping spring 2413 is still in a certain tension state.

[0064] Reference Figure 6 and Figure 7 There are several groups of support components, and several support components are arranged on the four sides of the positioning frame 2411. The support components include a first support plate 2421 and a second support plate 2422. One end of the first support plate 2421 is rotatably mounted on the top wall of the positioning frame 2411, and the other end extends upwardly and obliquely away from the upper cover 21. One end of the second support plate 2422 is rotatably connected to the upper end of the first support plate 2421, and the other end of the second support plate 2422 is rotatably connected to the bottom wall of the support plate 2414.

[0065] Reference Figure 7 The winding mechanism 25 includes a winding roller 251 and an unwinding roller 253. The winding roller 251 is rotatably mounted on the side wall of the upper cover 21 away from the end where the upper cover 21 is connected to the box body 1. The winding roller 251 is used to wind up the silicone film 6. The unwinding roller 253 is rotatably mounted on the side wall of the end where the upper cover 21 is connected to the box body 1. The unwinding roller 253 is used to unwind the silicone film 6. A material passing hole for the silicone film 6 to pass through is opened on the side wall of the positioning frame 2411.

[0066] Reference Figure 8 and Fig. 9The control mechanism 26 includes a driving component 261 and a transmission component 262. The driving component 261 includes a power piece, a tension rod 2613 and a pull rope 2614. The power piece includes a driving motor 2611 and a driving shaft 2612. A bracket 2625 is fixedly installed on the top wall of the upper cover 21. The driving motor 2611 is fixedly installed on the bracket 2625, and the driving shaft 2612 is rotatably installed on the bracket 2625 along the vertical direction, and one end of the driving shaft 2612 is coaxially connected to the output shaft of the driving motor 2611. The tensioning rod 2613 is rotatably installed on the bracket 2625 along the vertical direction, and the tensioning rod 2613 is located on one side of the driving shaft 2612. A tensioning wheel 2615 is coaxially installed on the tensioning rod 2613. One end of the pull rope 2614 is fixedly connected to the tensioning wheel 2615, and the other end is connected to the connecting part of the first support rod and the second support rod. Wire clips 26120 are fixedly installed on the top wall and side walls of the upper cover 21. A gap is left between the wire clip 26120 and the top wall or side wall of the upper cover 21 for the pull rope 2614 to pass through, and the pull rope 2614 passes through the wire clip 26120.

[0067] Reference Fig. 9 and Fig.10 The tensioning rod 2613 is also connected to the driving shaft 2612 through a connecting piece, which includes a connecting disk 2616, a connecting rack 2619 and a connecting gear 26110. The connecting gear 26110 is coaxially installed at the lower end of the tensioning rod 2613, and the connecting rack 2619 is slidably installed on the top wall of the upper cover 21, and the connecting rack 2619 is meshed with the connecting gear 26110. The connecting disk 2616 is coaxially installed on the lower end of the driving shaft 2612, and a driving column 2617 is fixedly installed on the bottom wall of the connecting disk 2616 at a position away from the axial center of the connecting disk 2616, and the driving column 2617 is vertically arranged. A driving plate 2618 is fixedly installed on one end of the connecting rack 2619 close to the connecting disk 2616, and the axis of the driving plate 2618 is perpendicular to the axis of the connecting rack 2619, and a driving groove is opened on the top wall of the driving plate 2618, and the driving groove is arranged along the axial direction of the driving plate 2618, and the driving column 2617 is slidably installed in the driving groove on the driving plate 2618.

[0068] Reference Figure 7 and Fig. 9, the driving motor 2611 drives the driving shaft 2612 to rotate, so that the driving shaft 2612 drives the connecting disk 2616 to rotate, so that the driving column 2617 on the connecting disk 2616 makes a circular motion, and pulls the connecting rack 2619 to move through the driving plate 2618, so that the connecting rack 2619 makes a reciprocating motion. When the driving column 2617 drives the driving plate 2618 to move away from the tension rod 2613, the connecting rack 2619 drives the connecting gear 26110 to rotate, thereby driving the tension rod 2613 to rotate, so that the tension rod 2613 drives the tension wheel 2615 to rotate clockwise, so that the tension wheel 2615 The pull rope 2614 is reeled in and wound around the tensioning wheel 2615, so that the pull rope 2614 pulls the connecting part of the first support plate 2421 and the second support plate 2422, so that the first support plate 2421 and the second support plate 2422 gradually tend to be on the same straight line, so that the first support plate 2421 and the second support plate 2422 push the support plate 2414 upward, so that the support plate 2414 drives the clamping plate 2412 to move upward through the support rod and stretch the clamping spring 2413, so that the clamping plate 2412 loosens the silicone film 6, thereby facilitating the reeling mechanism 25 to reel in the silicone film 6, and at the same time, the unwinding mechanism unwinds the silicone film 6.

[0069] Reference Figure 7 and Fig. 9 When the driving column 2617 performing circular motion drives the driving plate 2618 to move in the direction of the tensioning rod 2613, the driving plate 2618 drives the connecting gear 26110 to rotate counterclockwise through the connecting rack 2619, thereby driving the tensioning rod 2613 to rotate, so that the tensioning rod 2613 drives the tensioning wheel 2615 to rotate counterclockwise, thereby unwinding the pull rope 2614, so that the support plate 2414 moves downward under the drive of the clamping spring 2413, and when the connecting disk 2616 drives the driving column 2617 to move so that the driving column 2617 and the connecting rack 2619 are located in the same straight line, the clamping plate 2412 clamps the silicone membrane 6 again, and makes the first support plate 2421 and the second support plate 2422 return to the folded state.

[0070] Reference Fig.11 and Fig.12The transmission assembly 262 includes a transmission rod 2621, a driving gear 2622, a transmission gear 2623 and a transmission block 2624. A mounting frame 2629 is fixedly installed on the bracket 2625 above the connecting plate 2616. The driving gear 2622 is rotatably mounted on the top wall of the mounting frame 2629, and the driving gear 2622 is coaxially arranged with the driving shaft 2612, and the driving gear 2622 maintains a sliding connection with the driving shaft 2612. The cross-section of the transmission block 2624 is a circular ring, and the transmission block 2624 is coaxially installed on the driving shaft 2612, and the transmission block 2624 is slidably connected to the driving shaft 2612, and the sliding path of the transmission block 2624 is the axial direction of the driving shaft 2612, and the transmission block 2624 is located above the driving gear 2622, and a plug-in groove is provided on the top wall of the driving gear 2622 near the driving shaft 2612, and an insertion block 26241 for plugging into the plug-in groove is fixedly installed at the lower end of the transmission block 2624, and a baffle is fixedly installed on the side wall of the transmission block 2624, and a driving spring 2626 is also installed on the driving shaft 2612 between the transmission block 2624 and the driving gear 2622, one end of the driving spring 2626 is in contact with the bottom wall of the baffle, and the other end is in contact with the top wall of the driving gear 2622. A guide ring 26242 is fixedly installed on the top wall of the upper end of the transmission block 2624, and a notch 26243 is provided on the guide ring 26242. A push rod 2627 is fixedly installed on the bracket 2625 above the transmission block 2624. The push rod 2627 is arranged in the vertical direction, and the lower end of the push rod 2627 extends downward to contact the top wall of the guide ring 26242.

[0071] Reference Fig.11 and Fig.12 The transmission rod 2621 is rotatably mounted on the top wall of the upper cover 21, and the axis of the transmission rod 2621 is parallel to the axis of the connecting rack 2619, and one end of the transmission rod 2621 extends to the driving gear 2622, and the other end extends to the end of the upper cover 21, and the transmission gear 2623 is coaxially mounted on one end of the transmission rod 2621 close to the driving gear 2622, and the transmission gear 2623 is meshed with the driving gear 2622. A driving pulley 2628 is coaxially mounted on the end of the transmission rod 2621 away from the transmission gear 2623, a winding pulley 252 is coaxially mounted on the end of the winding roller 251 close to the driving pulley 2628, and an unwinding pulley 254 is coaxially mounted on the end of the unwinding roller 253 close to the driving pulley 2628. The driving pulley 2628, the winding pulley 252 and the unwinding pulley 254 are connected by a synchronous belt, and the diameter of the winding pulley 252 is the same as the diameter of the unwinding pulley 254, and the diameter of the driving pulley 2628 is larger than the diameter of the winding pulley 252.

[0072] Reference Fig. 9 and Fig.12When the driving motor 2611 drives the driving shaft 2612 to rotate, the driving shaft 2612 drives the connecting plate 2616 and the transmission block 2624 to rotate at the same time. When the driving column 2617 on the connecting plate 2616 is located near the tension rod 2613 and is located on the same straight line as the connecting rack 2619, the push rod 2627 is located in the notch 26243 of the guide ring 26242 on the top wall of the transmission block 2624. At this time, the driving spring 2626 is in a relaxed state, and the transmission block 2624 is kept separated from the driving gear 2622. Figure 7 and Fig. 9 When the connecting plate 2616 drives the driving column 2617 to rotate counterclockwise in the direction away from the tension rod 2613, the driving column 2617 drives the connecting rack 2619 to move through the driving plate 2618, thereby driving the connecting gear 26110 to rotate, so that the tension wheel 2615 winds the pull rope 2614, so that the supporting assembly props up the supporting plate 2414, so that the clamping plate 2412 and the positioning frame 2411 loosen the silicone film 6. Fig.11 and Fig.12 Then, as the connecting plate 2616 continues to rotate counterclockwise, the driving shaft 2612 drives the transmission block 2624 to continue to rotate counterclockwise, so that the push rod 2627 moves from the notch 26243 of the guide ring 26242 to the top wall of the guide ring 26242, so that the transmission block 2624 is pushed toward the direction of the driving gear 2622 by the push rod 2627 and the driving spring 2626 is compressed, and the plug block 26241 at the lower end of the transmission block 2624 is plugged into the plug slot at the upper end of the driving gear 2622, so that the plug block 26241 contacts the inner wall of the plug slot, and the driving gear 2622 is driven to rotate synchronously by friction, so that the driving gear 2622 drives the transmission gear 2623 to rotate, thereby driving the transmission rod 2621 to rotate, so that the transmission rod 2621 drives the driving pulley 2628 to rotate, thereby driving the winding roller 251 and the unwinding roller 253 to rotate through the synchronous belt, and since the diameter of the driving pulley 2628 is larger than the diameter of the winding pulley 252 and the unwinding pulley 254, the rotation speed of the winding roller 251 and the unwinding roller 253 is greater than the rotation speed of the transmission rod 2621, thereby facilitating and quickly transferring the silicone film 6 in the upper cover 21, and winding the used silicone film 6 through the winding roller 251, and unwinding the new silicone film 6 and conveying it to the upper cover 21.

[0073] Reference Fig. 9 and Fig.12When the connecting plate 2616 drives the driving column 2617 to rotate 360 ​​degrees counterclockwise, the driving column 2617 returns to the state of being in the same straight line with the connecting rack 2619. At this time, the push rod 2627 just slides along the top wall of the guide ring 26242 to the notch 26243, so that the transmission block 2624 moves in the direction of the push rod 2627 under the drive of the driving spring 2626, so that the push rod 2627 is inserted into the notch 26243, so that the insertion block 26241 at the lower end of the transmission block 2624 is separated from the driving gear 2622, so that the driving gear 2622 stops rotating, thereby stopping the driving pulley 2628 from rotating. At this time, the winding roller 251 has just completed winding the old silicone film 6, and the unwinding roller 253 has just unwound the new silicone film 6 into the upper cover 21, and the positioning component clamps the silicone film 6 again, thereby facilitating the molding of the composite material on the heating table 31.

[0074] The working principle of this embodiment is as follows: when the composite material needs to be molded, the upper cover 21 is driven by the driving member to close the heating table 31, so that the silicone film 6 covers the mold 5 paved with the composite material sheet, and the space above the heating table 31 and below the silicone film 6 is evacuated, so that the silicone film 6 is pressed tightly against the mold 5 and the composite material sheet, and at the same time, the upper cover 21 is ventilated to increase the air pressure above the silicone film 6, so as to keep the silicone film 6 pressed tightly against the mold 5 and the composite material sheet; then the heating table 31 is heated, and the heater 33 on the upper cover 21 is used to heat the air above the silicone film 6, so as to transfer the heat to the mold, thereby facilitating the curing and molding of the product.

[0075] After the silicone film 6 has been used for a period of time, it is necessary to replace the silicone film 6. At this time, the driving motor 2611 drives the driving shaft 2612 to rotate, thereby driving the tension rod 2613 to rotate through the connecting piece, so that the tension rod 2613 reels the pull rope 2614 through the tension wheel 2615, thereby driving the propping assembly to prop up the positioning assembly, thereby loosening the silicone film 6. Then, as the driving shaft 2612 continues to rotate, the driving shaft 2612 begins to drive the transmission assembly 262 to operate, so that the transmission assembly 262 drives the reeling mechanism 25 to operate, so that the reeling mechanism 25 reels the old silicone film 6 and unwinds the new silicone film 6 into the upper cover 21. After the new silicone film 6 replaces the old silicone film 6, the transmission assembly 262 stops operating, and the driving shaft 2612 continues to drive the connecting piece to move, so that the connecting piece drives the tension rod 2613 to restore the initial state, so that the propping assembly loosens the positioning assembly, so that the positioning assembly re-clamps the silicone film 6, thereby facilitating the subsequent molding of the composite material parts. Example 3

[0076] This embodiment discloses a composite material molding method based on the molding equipment of embodiment 1 or embodiment 2, comprising:

[0077] Step 1: Lay the composite material sheet on the mold 5 according to the layup design;

[0078] Step 2: Install the mold 5 on which the composite material sheet is laid in step 1 onto the heating table 31 of the molding equipment;

[0079] Step 3: After the mold 5 is placed, the opening and closing device 2 is started, and the upper cover 21 is buckled on the heating platform 31 through the opening and closing device 2, so that the silicone film 6 in the upper cover 21 covers the entire mold 5;

[0080] Step 4: After the upper cover 21 is fastened, the vacuum device 4 is started. The vacuum device 4 extracts the air between the heating platform 31 and the silicone film 6 on the heating platform 31 through the air extraction hole 312, so that the silicone film 6 and the heating platform 31 reach a vacuum state. At the same time, an external air source is used to introduce gas into the upper cover 21 through the air inlet hole 211 to increase the air pressure in the upper cover, thereby providing positive pressure to the silicone film 6, so that the silicone film 6 is further pressed against the mold 5;

[0081] Step 5: When the vacuum device 4 draws the corresponding vacuum value between the heating platform 31 and the silicone film 6, and the air introduced into the upper cover 21 reaches the corresponding positive pressure value, heating and curing are started. The vacuum value is ≤-0.092MPa, and the positive pressure value ranges from 0.5-0.8Mpa, which can be adjusted within the range according to the product characteristics.

[0082] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A composite material molding device, comprising a box (1), characterized in that: The box body (1) is equipped with an opening and closing device (2), a heating device (3), a vacuum device (4) and a mold (5). The heating device (3) includes a heating table (31) and a heating mechanism (32). The heating table (31) and the heating mechanism (32) are both installed on the box body (1), and the heating mechanism (32) is connected to the heating table (31). The mold (5) is installed on the heating table (31), and the mold (5) is used to shape the product. The vacuum device (4) is also connected to the heating table (31). The opening and closing device (2) is equipped with a silicone film (6), and the silicone film (6) is used to cover the mold (5). The opening and closing device (2) is used to close the heating platform (31), and the opening and closing device (2) comprises an upper cover (21) and a driving member, one end of the upper cover (21) is rotatably mounted on the top wall of the box body (1), and the upper cover (21) is used to close the heating platform (31), the driving member is mounted on the box body (1), and the driving member is connected to the upper cover (21), and the driving member is used to drive the upper cover (21) to open and close, an air inlet (211) is provided on the side wall of the upper cover (21), and the air inlet (211) is connected to an external air source, and the opening and closing device (2) also comprises a clamping mechanism (23), and the clamping mechanism is used to clamp the silicone mold;Or the opening and closing device (2) further comprises a clamping release mechanism (24), a winding mechanism (25) and a control mechanism (26), wherein the clamping release mechanism (24) comprises a positioning assembly and a supporting assembly, wherein the positioning assembly is used to clamp the silicone mold, wherein the supporting assembly is mounted on the positioning assembly, and wherein the supporting assembly is connected to the positioning assembly, wherein the control mechanism (26) and the winding mechanism (25) are both mounted on the upper cover (21), wherein the control mechanism (26) is connected to the supporting assembly, wherein the winding mechanism (25) is connected to the control mechanism (26), and wherein the winding mechanism (25) is used to convey the silicone film (6), wherein the control mechanism (2 6) includes a driving assembly (261) and a transmission assembly (262), wherein the driving assembly (261) is connected to the supporting assembly, the transmission assembly (262) is also installed on the upper cover (21), and the transmission assembly (262) is connected to the power member, and the transmission assembly (262) is also connected to the winding mechanism (25), the clamping mechanism (23) includes a positioning clamp (231), an upper clamping frame (232), a clamping frame (233) and a lower clamping frame (234), the upper clamping frame (232) and the lower clamping frame (234) are both installed on the upper cover (21), and the upper clamping frame (232) and the lower clamping frame (234) are connected to each other. A gap is left between the upper and lower clamping frames (232), the positioning clamp (231) is installed on the side wall of the lower clamping frame (234), and the positioning clamp (231) is also connected to the upper clamping frame (232), the clamping frame (233) is installed on the upper clamping frame (232), and the clamping frame (233) is located between the upper clamping frame (232) and the lower clamping frame (234), and the clamping frame (233) and the lower clamping frame (234) are used to clamp the silicone film (6), the positioning assembly includes a positioning frame (2411), a clamping plate (2412), a clamping spring (2413) and a support plate (2414), the positioning frame (2411) is installed on the upper On the cover (21), a support rod is installed on the clamping plate (2412), and the clamping plate (2412) is installed on the positioning frame (2411) through the support rod, and a gap for placing the silicone film (6) is left between the clamping plate (2412) and the positioning frame (2411), and the clamping plate (2412) is used to press the silicone film (6), the support plate (2414) is installed at one end of the support rod away from the clamping plate (2412), the clamping spring (2413) is installed on the support rod, and one end of the clamping spring (2413) is connected to the positioning frame (2411), and the other end is connected to the support plate (2414). ; 2. A composite material molding device according to claim 1, characterized in that: The heating platform (31) is provided with a heating pipeline (313), and the heating mechanism (32) comprises an oil temperature machine (321). The oil temperature machine (321) is arranged on one side of the box (1) and is connected to the heating pipeline (313). The oil temperature machine (321) is used to heat a heating agent and transport the heating agent to the heating pipeline (313).

3. A composite material molding device according to claim 1, characterized in that: The heating device further comprises a heater (33), which is installed in the opening and closing device (2), and the heater (33) is used to increase the air temperature in the area above the silicone membrane (6).

4. A composite material molding device according to claim 1, characterized in that: The vacuum pump (4) comprises a vacuum pump (41) and a vacuum tube (42); a plurality of guide grooves (311) are provided on the heating platform (31); a plurality of air extraction holes (312) are also provided on the heating platform (31); one end of the air extraction hole (312) is connected to the guide groove (311); the vacuum pump (41) is installed in the box (1); one end of the vacuum tube (42) is connected to the vacuum pump (41); and the other end is connected to one end of the air extraction hole (312) away from the guide groove (311).

5. A composite material molding device according to claim 1, characterized in that: The driving assembly (261) comprises a power piece, a tension rod (2613) and a pull rope (2614); the power piece and the tension rod (2613) are both mounted on the upper cover (21); the power piece is connected to the tension rod (2613); and one end of the pull rope (2614) is connected to the tension rod (2613).

6. A composite material molding device according to claim 5, characterized in that: The transmission assembly (262) comprises a transmission rod (2621), a driving gear (2622), a transmission gear (2623) and a transmission block (2624); the driving gear (2622) and the transmission rod (2621) are both mounted on the upper cover (21); the transmission gear (2623) is mounted on the transmission rod (2621), and the driving gear (2622) is meshed with the transmission gear (2623); the transmission rod (2621) is also connected to the winding mechanism (25); the transmission block (2624) is mounted on the power member, and the transmission block (2624) is used to connect the driving gear (2622) to the power member.

7. A composite material molding method, based on the composite material molding device according to any one of claims 1 to 6, characterized in that: include: Step 1: Laying the composite material sheet on the forming mold (5) according to the layer laying design; Step 2: The mold (5) on which the composite material sheet is laid in step 1 is integrally mounted on a heating platform (31) of a molding device; Step 3: Activate the opening and closing device (2) to close the upper cover (21) so that the silicone film (6) covers the entire mold (5); Step 4: Start the vacuum pump (4) to achieve a vacuum state between the silicone membrane (6) and the heating platform (31), and at the same time, introduce air into the air inlet (211) on the upper cover (21) through an external air source, thereby providing positive pressure to the silicone membrane (6); Step 5: After a vacuum value is reached between the silicone film (6) and the heating platform (31) and a positive pressure value is reached inside the upper cover (21), heating and curing are started, wherein the vacuum value is ≤-0.092MPa and the positive pressure value ranges from 0.5 to 0.8MPa.

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