A composite material preform molding device

Abstract

The application provides a composite material preform forming device, which comprises a rack, a lower workbench, an upper workbench and a mold assembly, the rack is provided with a containing space, the lower workbench is arranged in the containing space and is fixedly connected with the rack, the lower workbench comprises a fixed seat and a supporting plate, the supporting plate is movably arranged in the fixed seat along a first direction, and a through hole is formed in the supporting plate, the upper workbench is movably arranged in the containing space along the first direction, the upper workbench comprises a moving seat and an upper pressing plate movably arranged in the moving seat along the first direction, the mold assembly is detachably arranged in the fixed seat and corresponds to the position of the through hole, and the upper pressing plate and the mold assembly are respectively pressed against the upper and lower surfaces of a composite material plate. The application is used for improving the compatibility of the forming device.

Description

Technical Field

[0001] This invention relates to the field of composite material laying technology, and in particular to a composite material preform forming device. Background Technology

[0002] Currently, battery pack covers are typically made of composite materials, such as epoxy resin-based continuous glass fiber prepreg, which has high specific modulus and specific strength, improving the overall performance of the battery cover. During processing, the prepreg is cut into pre-set pieces using a cutting device. After cutting, the pieces are manually laid onto the surface of a mold. After several layers are laid, the product is sent into a molding machine for heating and pressing to form the preform.

[0003] Current molding equipment is usually specialized and difficult to integrate with equipment for molding other types of battery covers. The investment in battery cover molding equipment is generally several hundred thousand or even millions of yuan, which greatly increases the product development cost.

[0004] Therefore, there is an urgent need for a composite material preform molding device to improve the compatibility of molding devices. Summary of the Invention

[0005] This invention provides a composite material preform molding device to improve the compatibility of molding devices.

[0006] To achieve the above objectives, the present invention provides a composite material preform molding apparatus, comprising:

[0007] A rack, wherein the rack has accommodating space;

[0008] The lower worktable is disposed within the accommodating space and is fixedly connected to the frame. The lower worktable includes a fixed base and a support plate. The support plate is movably disposed within the fixed base along a first direction. A through hole is provided in the support plate. The support plate is used to place composite material plates.

[0009] An upper worktable is movably disposed within the accommodating space along the first direction. The upper worktable includes a movable base and an upper pressure plate movably disposed within the movable base along the first direction.

[0010] A mold assembly is detachably disposed within the fixed base, and the mold assembly corresponds to the position of the through hole. The upper pressure plate and the mold assembly respectively press against the upper and lower surfaces of the composite material plate.

[0011] The present invention provides a composite material preform molding device with a simple structure and good versatility of the frame, fixed base and movable base, which can be adapted to different models of preform molding tooling, improve the compatibility of the molding device and reduce the manufacturing cost of the molding device.

[0012] In one possible implementation, the upper worktable further includes an upper back plate and a first drive member, the upper back plate being disposed within the movable seat, and the upper pressure plate being connected to the side of the upper back plate facing the lower worktable via the first drive member, the first drive member being used to drive the upper pressure plate to move along the first direction.

[0013] In one possible implementation, the upper worktable further includes a plurality of side plate forming units, each of which is connected to the upper back plate. The plurality of side plate forming units surround the outer side of the upper pressure plate, and the side plate forming units correspond to the positions of the through holes. A first gap exists between the side plate forming units and the upper pressure plate.

[0014] In one possible implementation, each side plate forming unit includes a flange plate, a swing frame, and a roller pulley. The flange plate is connected to the side of the upper back plate facing the lower worktable. The swing frame is oscillating at the end of the flange plate away from the upper back plate. The roller pulley is rotatably disposed within the swing frame.

[0015] In one possible implementation, the mold assembly includes a fixed template, a movable template, and an ejector, wherein the fixed template is fixed within the fixed base, the movable template is sleeved on the side of the fixed base facing the upper worktable, and the ejector is connected between the fixed template and the movable template.

[0016] In one possible implementation, the lower worktable further includes a second drive member disposed between the fixed base and the support plate.

[0017] In one possible implementation, the composite material preform molding apparatus further includes a power assembly comprising a motor, a transmission assembly, and at least two first lifting assemblies. The motor is fixedly connected to the movable seat, the first lifting assemblies are disposed between the frame and the movable seat, and the motor is connected to at least two of the first lifting assemblies via the transmission assembly.

[0018] In one possible implementation, the first lifting assembly includes a first rack and a first gear, the first rack being disposed on the outer side wall of the movable seat along the first direction, the first gear being interconnected with the transmission assembly, and the first gear meshing with the first rack.

[0019] In one possible implementation, the transmission assembly includes a first drive shaft, a second drive shaft, and a steering gear, with a first end of the first drive shaft connected to the motor, a second end of the first drive shaft connected to the second drive shaft via the steering gear, and a first gear fixed to one end of the second drive shaft relative to the steering gear.

[0020] In one possible implementation, the composite material preform forming device further includes a second lifting assembly, which includes a second rack and a second gear. One of the second rack and the second gear is disposed on the fixed base, and the other of the second rack and the second gear is disposed on the support plate, and the second rack and the second gear mesh with each other.

[0021] In one possible implementation, the composite material preform forming device further includes a positioning assembly, which includes a positioning shaft and a positioning sleeve. The positioning sleeve is fitted onto the outer peripheral surface of the positioning shaft. One of the positioning shaft and the positioning sleeve is disposed on the upper back plate, and the other of the positioning shaft and the positioning sleeve is disposed on the fixing seat.

[0022] In one possible implementation, the composite material preform forming device further includes a first guide assembly, which includes a first guide member and a second guide member. The first guide member is slidably disposed along the second guide member. One of the first guide member and the second guide member is disposed on the support plate, and the other of the first guide member and the second guide member is disposed on the fixed base.

[0023] In one possible implementation, the composite material preform forming apparatus further includes a second guide assembly, which includes a third guide member and a fourth guide member, the fourth guide member being slidably disposed along the third guide member, one of the third guide member and the fourth guide member being disposed on the frame, and the other of the third guide member and the fourth guide member being disposed on the movable seat.

[0024] The present invention provides a composite material preform molding device, which, during the demolding process, uses an ejector to lift the preform and the moving mold together, so that the moving mold separates from the fixed mold, preventing the preform from deforming during demolding and ensuring the molding accuracy of the preform. In addition, it also helps to increase the demolding speed of the preform and reduce the time occupied by demolding during the molding process, thereby improving production efficiency.

[0025] The present invention provides a composite material preform molding device, wherein a flange pressure plate presses the flange edge of the preform to ensure the molding accuracy of the flange edge of the preform, and a swing frame drives the roller pulley to roll to ensure the fit between the side plate of the preform and the mold assembly, thereby improving the molding accuracy of the side plate of the preform.

[0026] In addition to the technical problems solved by the embodiments of the present invention, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the composite material preform molding device provided by the embodiments of the present invention, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific embodiments. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a three-dimensional structural schematic diagram of the composite material preform molding device provided in an embodiment of the present invention;

[0029] Figure 2 This is a partial structural schematic diagram of the composite material preform molding device provided in an embodiment of the present invention;

[0030] Figure 3 A three-dimensional structural diagram of the lower worktable of the composite material preform molding device provided in an embodiment of the present invention;

[0031] Figure 4 A schematic diagram of the connection structure between the power component and the moving base of the composite material preform molding device provided in an embodiment of the present invention;

[0032] Figure 5 A partial three-dimensional structural diagram of the upper worktable of the composite material preform molding device provided in an embodiment of the present invention;

[0033] Figure 6 A three-dimensional structural diagram of the lower worktable and upper worktable of the composite material preform molding device provided in an embodiment of the present invention;

[0034] Figure 7 A three-dimensional structural schematic diagram of the frame of the composite material preform molding device provided in an embodiment of the present invention;

[0035] Figure 8A three-dimensional structural diagram of the composite material preform molding device provided in an embodiment of the present invention, showing the separation of the lower worktable and the upper worktable;

[0036] Figure 9 A three-dimensional structural diagram of the composite material preform molding device provided in an embodiment of the present invention when the prepreg is placed on the positioning plate;

[0037] Figure 10 A three-dimensional structural diagram of the composite material preform molding device provided in an embodiment of the present invention when molding the base plate;

[0038] Figure 11 A three-dimensional structural diagram of the composite material preform molding device provided in an embodiment of the present invention during the molding of a side plate;

[0039] Figure 12 A three-dimensional structural diagram of the composite material preform molding device provided in an embodiment of the present invention, showing the upper worktable moving upward and separating from the lower worktable;

[0040] Figure 13 A three-dimensional structural diagram of the composite material preform molding device provided in this embodiment of the invention when the moving mold pushes against the prepreg and separates from the fixed template;

[0041] Figure 14 for Figure 10 A schematic diagram of a half-section structure;

[0042] Figure 15 for Figure 11 A schematic diagram of a half-section structure;

[0043] Figure 16 A cross-sectional view of the mold assembly of the composite material preform molding device provided in an embodiment of the present invention;

[0044] Figure 17 This is a front view of the composite material preform molding apparatus provided in an embodiment of the present invention.

[0045] Explanation of reference numerals in the attached figures:

[0046] 10-Rack;

[0047] 11-Accommodation space;

[0048] 20 - Lower workbench;

[0049] 21-Fixed base;

[0050] 22-Support plate;

[0051] 221 - Through hole;

[0052] 23-Positioning plate;

[0053] 24 - First guide assembly;

[0054] 241 - First guide component;

[0055] 242 - Second guide component;

[0056] 25 - Second drive component;

[0057] 30 - onto the workbench;

[0058] 31- Top back panel;

[0059] 32-Upper pressure plate;

[0060] 33-First driving component;

[0061] 34-Side panel forming unit;

[0062] 341 - Flange pressure plate;

[0063] 342-Swing frame;

[0064] 343 - Roller Press Pulley;

[0065] 35-Moving seat;

[0066] 40 - Mold assembly;

[0067] 41-Fixed template;

[0068] 42-Mobile tire mold;

[0069] 421-Cavity;

[0070] 43 - Top-out component;

[0071] 50 - Power Components;

[0072] 51-Motor;

[0073] 52-Transmission assembly;

[0074] 521 - First drive shaft;

[0075] 522 - Second drive shaft;

[0076] 523 - Steering Gear;

[0077] 53 - First lifting assembly;

[0078] 531 - First rack;

[0079] 532 - First Gear;

[0080] 60 - Second lifting assembly;

[0081] 61 - Second rack;

[0082] 62 - Second gear;

[0083] 70 - Control cabinet. Detailed Implementation

[0084] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0085] Composite materials are materials composed of two or more different substances combined in different ways to overcome the defects of single materials. In this example, the composite material is molded into a preform, which is a battery cover. The preform includes a base plate and multiple side plates. The multiple side plates are connected to the edge of the base plate in sequence. The side plates and the base plate can be perpendicular to each other. The end of the side plate away from the base plate is connected to a flange edge.

[0086] Current molding equipment is usually specialized equipment, which is highly specialized. Typically, one machine can only mold one type of battery cover, making it difficult to modify and resulting in high equipment costs.

[0087] In view of this, the present invention provides a composite material preform molding device with a simple structure and good versatility of the frame, fixed base and movable base, which can be adapted to different types of preform molding tooling and reduce the manufacturing cost of the molding device.

[0088] The following description, with reference to the accompanying drawings, describes a composite material preform molding apparatus provided by an embodiment of the present invention.

[0089] refer to Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a composite material preform molding device, including: a frame 10, a lower worktable 20, an upper worktable 30 and a mold assembly 40, wherein the frame 10 has an accommodating space 11.

[0090] refer to Figure 1 and Figure 3 As shown, the lower worktable 20 is disposed in the accommodating space 11 and is fixedly connected to the frame 10. The lower worktable 20 includes a fixed base 21 and a support plate 22. The support plate 22 is movably disposed in the fixed base 21 along the first direction. A through hole 221 is provided in the support plate 22. The support plate 22 is used to place the composite material plate.

[0091] refer to Figure 1 and Figure 4 As shown, the upper worktable 30 is movably disposed within the accommodating space 11 along the first direction, for reference. Figure 4 and Figure 5 As shown, the upper worktable 30 includes a movable seat 35 and an upper pressure plate 32 that is movably disposed within the movable seat 35 along a first direction.

[0092] refer to Figure 3 and Figure 6 As shown, the mold assembly 40 is detachably installed in the fixed base 21, and the mold assembly 40 corresponds to the position of the through hole 221. The upper pressure plate 32 and the mold assembly 40 press against the upper and lower surfaces of the composite material plate, respectively.

[0093] First Direction Reference Figure 1 The arrow Y in the diagram indicates the direction, i.e., the vertical direction.

[0094] The composite material preform molding device provided in this embodiment of the invention has a simple structure and good versatility of the frame 10, fixed seat 21 and movable seat 35, which improves the compatibility of the molding device and can be adapted to different models of preform molding tooling, thereby reducing the manufacturing cost of the molding device.

[0095] In one possible implementation method, refer to Figure 1 and Figure 7 As shown, the frame 10 is a frame structure, for example, it can be made of annealed and stress-relieved steel, and the frame 10 can be cubic in shape. The frame 10 is used to support the lower worktable 20 and the upper worktable 30.

[0096] In one possible implementation method, refer to Figure 3 and Figure 6 As shown, a positioning plate 23 is detachably mounted on the support plate 22. The positioning plate 23 is used to position the composite material plate, ensuring accurate placement and thus improving the quality of the molded preform. When molding other types of preforms, different positioning plates 23 can be easily replaced, increasing the flexibility of use.

[0097] In one possible implementation method, refer to Figure 4 and Figure 5 As shown, the upper worktable 30 also includes an upper back plate 31 and a first driving member 33. The upper back plate 31 is disposed in the movable seat 35. The upper pressure plate 32 is connected to the side of the upper back plate 31 facing the lower worktable 20 through the first driving member 33. The first driving member 33 is used to drive the upper pressure plate 32 to move along a first direction.

[0098] In one possible implementation method, refer to Figure 5 and Figure 6As shown, the first driving member 33 can be a cylinder or a hydraulic cylinder. The first driving member 33 pushes the upper pressure plate 32 towards the support plate 22 where the composite material plate is placed in the first direction, so that the upper pressure plate 32 presses the upper surface of the composite material plate. The first driving member 33 pushes the upper pressure plate 32 away from the support plate 22 where the composite material plate is placed in the first direction, and stops applying pressure to the upper surface of the composite material plate.

[0099] In one possible implementation method, refer to Figure 3 and Figure 8 As shown, the upper worktable 30 also includes multiple side plate forming units 34, all of which are connected to the upper back plate 31. The multiple side plate forming units 34 surround the outer side of the upper pressure plate 32, and the side plate forming units 34 correspond to the positions of the through holes 221. There is a first gap between the side plate forming units 34 and the upper pressure plate 32.

[0100] In one possible implementation method, refer to Figure 9 As shown, when the prefabricated body is cubic in shape, the bottom plate has four side plates connected to its edge. Correspondingly, there are four side plate forming units 34. Each of the four side plate forming units 34 is used to press the corresponding four side plates, improving the forming accuracy of the four side plates. Of course, when the prefabricated body has other shapes, the number of side plate forming units 34 can also be other numbers, which is not specifically limited here. For example, when the prefabricated body is hexagonal prism-shaped, the number of side plate forming units 34 can be six. Each of the six side plate forming units 34 is used to press the six side plates, improving the forming accuracy of the side plates.

[0101] refer to Figure 10 As shown, during operation, the upper pressure plate 32 presses against the upper surface of the composite material plate, and the mold assembly 40 presses against the lower surface of the composite material plate. Through the cooperation of the upper pressure plate 32 and the mold assembly 40, the composite material plate sheet is pressed out of the base plate of the preform. Then, refer to... Figure 11 As shown, the side plate forming unit 34 is used to press the sheet into the side plate of the preform, thereby realizing the forming of the preform.

[0102] In one possible implementation method, refer to Figure 5 As shown, each side panel forming unit 34 includes a flange pressure plate 341, a swing frame 342, and a roller pulley 343. The flange pressure plate 341 is connected to the side of the upper back plate 31 facing the lower worktable 20. The swing frame 342 is oscillatingly disposed at the end of the flange pressure plate 341 away from the upper back plate 31. The roller pulley 343 is rotatably disposed within the swing frame 342.

[0103] In one possible implementation, the flange plate 341 can be connected to the lower surface of the upper back plate 31 by fasteners such as screws or bolts, so as to facilitate the adjustment of the connection position of the flange plate 341 according to the size of different models of prefabricated parts.

[0104] In one possible implementation, the end of the flange plate 341 relative to the upper back plate 31 is a pressure surface, which is used to press against the composite material plate, i.e., to press against the prepreg, to form the flange edge of the preform and ensure the forming quality of the flange edge.

[0105] The roller pulley 343 is used to press the outer surface of the side plate of the preform. The roller pulley 343 can rotate, which improves the fit between the side plate of the preform and the mold assembly 40, thereby preventing the side plate of the preform from deforming and improving the forming accuracy of the side plate of the preform.

[0106] During the process of the side panel forming unit 34 contacting the side panel of the preform, the swing frame 342 can swing, which helps to control the pressing force of the roller pulley 343 on the side panel of the preform and prevents problems such as crushing the side panel of the preform.

[0107] The side of the flange plate 341 facing the side plate of the precast body can also abut against the side plate of the precast body to increase the clamping force on the side plate of the precast body, thereby improving the forming accuracy of the side plate of the precast body.

[0108] In one possible implementation, the swing frame 342 includes two swing arms and a connecting shaft fixedly connected between the two swing arms. The roller pulley 343 may be sleeved on the outer circumferential surface of the connecting shaft and rotates around the central axis of the connecting shaft. The ends of the two swing arms away from the connecting shaft may be connected to the opposite sides of the flange plate 341 by pins or rotating shafts.

[0109] refer to Figure 13 and Figure 16 As shown, the mold assembly 40 corresponds to the position of the through hole 221. The mold assembly 40 includes a fixed template 41, a movable template 42, and an ejector 43. The fixed template 41 is fixed in the fixed base 21. The movable template 42 is sleeved on the side of the fixed base 21 facing the upward worktable 30. The ejector 43 is connected between the fixed template 41 and the movable template 42. The upper pressure plate 32 and the movable template 42 press against the upper and lower surfaces of the composite material plate, respectively.

[0110] In one possible implementation method, refer to Figure 13 and Figure 16 As shown, a cavity 421 is formed inside the movable mold 42. One end of the ejector 43 is embedded in the fixed mold 41, and the other end of the ejector 43 is connected to the inner wall of the cavity 421, so that the fixed mold 41 can completely fit with the inner wall of the cavity 421. There can be two or more ejectors 43, which helps to improve the smoothness of demolding.

[0111] In this structure, the preform and the movable mold 42 are in contact with each other. The movable mold 42 can support the preform well. During the demolding process, the ejector 43 lifts the preform and the movable mold 42 together, so that the movable mold 42 separates from the fixed mold 41, preventing the preform from deforming during demolding and ensuring the molding accuracy of the preform. In addition, it is also conducive to improving the demolding speed of the preform and reducing the time occupied by demolding during the molding process, thereby improving production efficiency.

[0112] In one possible implementation, the ejector 43 can be a pneumatic or hydraulic cylinder.

[0113] In one possible implementation method, refer to Figure 12 and Figure 13 As shown, the lower worktable 20 also includes a second driving member 25, which is disposed between the fixed base 21 and the support plate 22. The second driving member 25 is used to drive the support plate 22 to move closer to the upper worktable 30 along a first direction.

[0114] In one possible implementation, the second drive element 25 can be a pneumatic cylinder or a hydraulic cylinder. To improve the stability of the movement of the support plate 22, there can be two or more second drive elements 25.

[0115] In one possible implementation method, refer to Figure 1 and Figure 4 As shown, the composite material preform molding device provided in this embodiment of the invention further includes a power component 50. The power component 50 includes a motor 51, a transmission component 52 and at least two first lifting components 53. The motor 51 is fixedly connected to the movable seat 35. The first lifting components 53 are disposed between the frame 10 and the movable seat 35, and the motor 51 is connected to at least two first lifting components 53 through the transmission component 52.

[0116] The power unit 50 is used to drive the upper worktable 30 to move in the first direction. The upper worktable 30 carries the motor 51 and the transmission unit 52 and moves up and down synchronously.

[0117] In one possible implementation, there can be four first lifting components 53, which can be arranged in pairs opposite each other, which helps to improve the stability of the lifting movement of the upper worktable 30.

[0118] In one possible implementation, motor 51 has a safety lock, which can improve the safety of use.

[0119] In one possible implementation method, refer to Figure 1 and Figure 4As shown, the first lifting assembly 53 includes a first rack 531 and a first gear 532. The first rack 531 is disposed on the outer side wall of the movable seat 35 along a first direction. The first gear 532 is connected to the transmission assembly 52, and the first gear 532 meshes with the first rack 531. The mutual cooperation between the first gear 532 and the first rack 531 improves the stability of the lifting movement of the upper worktable 30.

[0120] In one possible implementation, the transmission assembly 52 includes a first drive shaft 521, a second drive shaft 522, and a steering gear 523. A first end of the first drive shaft 521 is connected to a motor 51, and a second end of the first drive shaft 521 is connected to the second drive shaft 522 via the steering gear 523. A first gear 532 is fixed to one end of the second drive shaft 522 relative to the steering gear 523.

[0121] Motor 51 drives the first drive shaft 521 to rotate, and the first drive shaft 521 drives the second drive shaft 522 to rotate through the steering gear 523, so that the second drive shaft 522 drives the first gear 532 to rotate.

[0122] In one possible implementation, motor 51 is a dual-output-shaft motor, with the two output shafts of motor 51 extending to opposite sides of motor 51. There can be two first drive shafts 521, with the first ends of the two first drive shafts 521 respectively connected to the two output shafts of motor 51, and the second ends of the two first drive shafts 521 respectively connected to a steering gear 523.

[0123] In one possible implementation, each steering gear 523 has a second drive shaft 522 connected to its opposite sides. The axial direction of the second drive shaft 522 is perpendicular to the axial direction of the first drive shaft 521. The power of the first drive shaft 521 is transmitted to the two second drive shafts 522 through the steering gear 523.

[0124] In one possible implementation, there can be four first lifting components 53, and the four first gears 532 can be located at the four corner positions of the upper worktable 30. Through the aforementioned transmission components 52, the four first gears 532 rotate synchronously along the first rack 531, thereby realizing the smooth lifting and lowering movement of the upper worktable 30 and ensuring that the upper worktable 30 drives the upper pressure plate 32 to press down evenly.

[0125] In this embodiment, by using only one motor 51, it is convenient to control the pressure and speed of the downward movement of the upper worktable 30, ensuring precise control of the downward pressure, which is beneficial to the smooth movement of the upper worktable 30, and also ensures the consistency of the force on the pre-forming tooling, resulting in more accurate products after forming.

[0126] In one possible implementation method, refer to Figure 13 and Figure 14As shown, the composite material preform molding device also includes a second lifting assembly 60, which includes a second rack 61 and a second gear 62. One of the second rack 61 and the second gear 62 is disposed on the fixed base 21, and the other of the second rack 61 and the second gear 62 is disposed on the support plate 22, and the second rack 61 and the second gear 62 mesh with each other. The second lifting assembly 60 enables the support plate 22 to move smoothly up and down.

[0127] In one possible implementation, the number of second lifting components 60 can be 2, 4, or 6, etc., without specific limitation.

[0128] In one possible implementation, the second rack 61 may be disposed on the fixed base 21, the second gear 62 may be disposed on the support plate 22, and the second rack 61 and the second gear 62 may mesh with each other.

[0129] In other possible implementations, the second gear 62 may be disposed on the fixed base 21, the second rack 61 may be disposed on the support plate 22, and the second rack 61 and the second gear 62 may mesh with each other.

[0130] refer to Figure 10 and Figure 14 As shown, when the first driving member 33 pushes the upper pressure plate 32 against the upper surface of the composite material plate, the base plate of the preform is formed. Next, refer to... Figure 4 and Figure 15 As shown, under the action of the power component 50, the upper worktable 30 moves downward and pushes the support plate 22. Under the action of the second lifting component 60, the support plate 22 moves downward synchronously with the upper worktable 30. This process is used to form the side plate of the preform.

[0131] In one possible implementation method, refer to Figure 6 As shown, the composite material preform molding device provided in this embodiment of the invention further includes a positioning component 80. The positioning component 80 includes a positioning shaft 81 and a positioning sleeve 82. The positioning sleeve 82 is sleeved on the outer peripheral surface of the positioning shaft 81. One of the positioning shaft 81 and the positioning sleeve 82 is disposed on the upper back plate 31, and the other of the positioning shaft 81 and the positioning sleeve 82 is disposed on the fixing base 21. The size of the positioning sleeve 82 is adapted to the size of the positioning shaft 81.

[0132] In one possible implementation, the positioning shaft 81 can be mounted on the upper back plate 31, and the positioning sleeve 82 can be mounted on the fixed base 21. Alternatively, the positioning sleeve 82 can be mounted on the upper back plate 31, and the positioning shaft 81 can be mounted on the fixed base 21. By fitting the positioning sleeve 82 onto the outer circumferential surface of the positioning shaft 81, precise positioning of the lifting movement of the upper worktable 30 is achieved, preventing the upper worktable 30 from skewing during lifting, thereby avoiding affecting the forming accuracy of the preform.

[0133] In one possible implementation method, refer to Figure 8 As shown, the composite material preform molding device also includes a first guide assembly 24, which includes a first guide member 241 and a second guide member 242. The first guide member 241 is slidably disposed along the second guide member 242. One of the first guide member 241 and the second guide member 242 is disposed on the support plate 22, and the other of the first guide member 241 and the second guide member 242 is disposed on the fixed base 21.

[0134] In one possible implementation, the first guide member 241 may be disposed on the support plate 22, and the second guide member 242 may be disposed on the fixed base 21. Alternatively, the second guide member 242 may be disposed on the support plate 22, and the first guide member 241 may be disposed on the fixed base 21. In this configuration, the first guide member 241 is a sliding sleeve, and the second guide member 242 is a guide post. The sliding arrangement of the first guide member 241 along the second guide member 242 guides the lifting and lowering movement of the support plate 22, preventing the support plate 22 from tilting.

[0135] In one possible implementation method, refer to Figure 4 and Figure 5 As shown, the composite material preform molding device also includes a second guide assembly 90, which includes a third guide member 91 and a fourth guide member 92. The fourth guide member 92 is slidably disposed along the third guide member 91. One of the third guide member 91 and the fourth guide member 92 is disposed on the frame 10, and the other of the third guide member 91 and the fourth guide member 92 is disposed on the upper worktable 30.

[0136] In one possible implementation, the third guide 91 can be mounted on the frame 10, and the fourth guide 92 can be mounted on the movable seat 35. Alternatively, the fourth guide 92 can be mounted on the frame 10, and the third guide 91 can be mounted on the movable seat 35. The third guide 91 is a guide post, and the fourth guide 92 is a sliding sleeve. The fourth guide 92 slides along the third guide 91, guiding the lifting and lowering movement of the upper worktable 30 and preventing the upper worktable 30 from tilting.

[0137] In one possible implementation method, refer to Figure 17 As shown, the composite material preform molding device also includes a protective cover. The protective cover can be placed on the outside of the frame 10 to provide safety protection and prevent debris in the environment from falling into the frame 10 and affecting the operation of the composite material preform molding device.

[0138] In one possible implementation, a light grating is also installed inside the protective cover to prevent operators from accidentally entering the containment space 11, thus providing a safety protection function.

[0139] In one possible implementation, the composite preform molding device also includes a control cabinet 70, which may be located outside the frame 10. The control cabinet 70 contains a controller for automating the control of the composite preform molding device.

[0140] During production, the cut prepreg is placed on the positioning plate 23 on the support plate 22. The controller is activated, and the upper worktable 30 begins to move downward under the action of the power component 50. The upper pressure plate 32 first contacts the upper surface of the prepreg, and the upper pressure plate 32 and the moving mold 42 clamp and fix the prepreg to ensure that the prepreg does not shift. Then, under the action of the power component 50, the upper worktable 30 continues to move downward, and the first drive component 33 drives the upper pressure plate 32 to move upward. The roller pulley 343 passes through the through hole 221 and adheres to the composite material to form the side plate of the preform, so that the side plate of the preform adheres to the moving mold 42 until the roller pulley 343 contacts the flange edge. At this time, the swing frame 342 drives the roller pulley 343 to move to the side of the flange pressure plate 341 opposite to the upper pressure plate 32. At the same time, the flange pressure plate 341 presses the flange edge of the preform to ensure the forming accuracy of the flange edge of the preform.

[0141] After a preset pressure holding time, such as 5 seconds, the side plate forming unit 34 moves upward with the upper worktable 30 until the pressure surface of the flange pressure plate 341 of the side plate forming unit 34 is flush with the upper pressure plate 32. Then, the upper pressure plate 32 and the side plate forming unit 34 rise synchronously with the upper worktable 30 until the upper worktable 30 moves upward to the upper limit position. Then, the safety cylinder of the motor 51 locks the upper worktable 30 to improve the safety of use.

[0142] Finally, demolding is performed. Ejector 43 is activated, and under the action of ejector 43, the moving mold 42 is lifted upward. The preform remains in a position that is close to the surface of the moving mold 42 and is lifted upward synchronously with the moving mold 42, so as to reduce the time occupied by direct demolding of the preform and improve production efficiency.

[0143] In the composite material preform molding device provided in this embodiment of the invention, the frame 10, power component 50 and moving seat are general-purpose equipment, which simplifies the design of preform tooling and can be matched with the upper pressure plate 32, side plate forming unit, lower worktable 20 and mold component 40 for molding different types of preforms, thereby reducing the equipment manufacturing cost of the composite material preform molding device.

[0144] The present invention provides a composite material preform molding device. During the demolding process, the ejector 43 lifts the preform and the movable mold 42 together, so that the movable mold 42 separates from the fixed mold 41, preventing the preform from deforming during demolding and ensuring the molding accuracy of the preform. In addition, it is also beneficial to improve the demolding speed of the preform and reduce the time occupied by demolding during the molding process, thereby improving production efficiency.

[0145] The present invention provides a composite material preform molding device, wherein a flange pressure plate 341 presses the flange edge of the preform to ensure the molding accuracy of the flange edge of the preform, and a swing frame 342 drives the roller pulley 343 to roll to ensure the fit between the side plate of the preform and the mold assembly 40, thereby improving the molding accuracy of the side plate of the preform.

[0146] In the description of this invention, it should be understood that the terms "center," "length," "width," "thickness," "top," "bottom," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," "outer," "axial," and "circumferential," etc., used to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the indicated position or component must have a specific orientation, or a specific structure and operation, and therefore should not be construed as a limitation of this invention.

[0147] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0148] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0149] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0150] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A composite material preform molding device, characterized in that, include: A rack (10) having a receiving space (11) inside. The lower worktable (20) is disposed in the accommodating space (11) and fixedly connected to the frame (10). The lower worktable (20) includes a fixed base (21) and a support plate (22). The support plate (22) is movably disposed in the fixed base (21) along a first direction. A through hole (221) is provided in the support plate (22). The support plate (22) is used to place composite material plates. An upper worktable (30) is movably disposed within the accommodating space (11) along the first direction. The upper worktable (30) includes a movable base (35) and an upper pressure plate (32) movably disposed within the movable base (35) along the first direction. The upper worktable (30) also includes an upper back plate (31) and a first driving member (33). The upper back plate (31) is disposed within the movable base (35). The upper pressure plate (32) is connected to the side of the upper back plate (31) facing the lower worktable (20) via the first driving member (33). The first driving member (33) is used to drive the upper pressure plate (32) to move along the first direction. The upper worktable (30) also includes multiple side plate forming units (34). The forming units (34) are all connected to the upper back plate (31). Multiple side plate forming units (34) surround the outer side of the upper pressure plate (32), and the side plate forming units (34) are positioned opposite to the through holes (221). There is a first gap between the side plate forming units (34) and the upper pressure plate (32). Each side plate forming unit (34) includes a flange pressure plate (341), a swing frame (342), and a roller (343). The flange pressure plate (341) is connected to the side of the upper back plate (31) facing the lower worktable (20). The swing frame (342) is oscillating at the end of the flange pressure plate (341) away from the upper back plate (31). The roller (343) is rotatably disposed within the swing frame (342). The mold assembly (40) is detachably disposed in the fixed base (21), and the mold assembly (40) is positioned corresponding to the through hole (221). The upper pressure plate (32) and the mold assembly (40) respectively press against the upper and lower surfaces of the composite material plate.

2. The composite material preform molding device according to claim 1, characterized in that, The mold assembly (40) includes a fixed template (41), a movable template (42), and an ejector (43). The fixed template (41) is fixed inside the fixed base (21). The movable template (42) is sleeved on the side of the fixed base (21) facing the upper worktable (30). The ejector (43) is connected between the fixed template (41) and the movable template (42).

3. The composite material preform molding apparatus according to claim 1, characterized in that, The lower worktable (20) also includes a second drive member (25), which is disposed between the fixed base (21) and the support plate (22).

4. The composite material preform molding apparatus according to any one of claims 1-3, characterized in that, It also includes a power assembly (50), which includes a motor (51), a transmission assembly (52) and at least two first lifting assemblies (53). The motor (51) is fixedly connected to the movable seat (35). The first lifting assemblies (53) are disposed between the frame (10) and the movable seat (35), and the motor (51) is connected to at least two first lifting assemblies (53) through the transmission assembly (52).

5. The composite material preform molding apparatus according to claim 4, characterized in that, The first lifting assembly (53) includes a first rack (531) and a first gear (532). The first rack (531) is disposed on the outer side wall of the movable seat (35) along the first direction. The first gear (532) is connected to the transmission assembly (52) and meshes with the first rack (531).

6. The composite material preform molding apparatus according to claim 5, characterized in that, The transmission assembly (52) includes a first transmission shaft (521), a second transmission shaft (522), and a steering gear (523). The first end of the first transmission shaft (521) is connected to the motor (51), and the second end of the first transmission shaft (521) is connected to the second transmission shaft (522) through the steering gear (523). The first gear (532) is fixed to one end of the second transmission shaft (522) relative to the steering gear (523).

7. The composite material preform molding apparatus according to any one of claims 1-3, characterized in that, It also includes a second lifting assembly (60), which includes a second rack (61) and a second gear (62). One of the second rack (61) and the second gear (62) is disposed on the fixed base (21), and the other of the second rack (61) and the second gear (62) is disposed on the support plate (22). The second rack (61) and the second gear (62) mesh with each other.

8. The composite material preform molding apparatus according to any one of claims 1-3, characterized in that, It also includes a first guide assembly (24), which includes a first guide member (241) and a second guide member (242). The first guide member (241) is slidably disposed along the second guide member (242). One of the first guide member (241) and the second guide member (242) is disposed on the support plate (22), and the other of the first guide member (241) and the second guide member (242) is disposed on the fixing seat (21); and / or, It also includes a second guide assembly (90), which includes a third guide (91) and a fourth guide (92), the fourth guide (92) being slidably disposed along the third guide (91), one of the third guide (91) and the fourth guide (92) being disposed on the frame (10), and the other of the third guide (91) and the fourth guide (92) being disposed on the movable seat (35).

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