A forming device for enhancing an internally toothed member by interpenetrating continuous fibers

Abstract

The present invention provides a forming device for reinforcing an internal toothed component by interlacing continuous fibers. The output end of a motor is connected to a shift block, a fiber yarn roller is provided on the inner side of the shift block, a rectangular channel is provided on the side plate of a housing, a connecting rod of each fiber yarn roller is inserted into the rectangular channel and is laterally limited, and when the motor drives the shift block to rotate, the shift block moves the fiber yarn roller along the rectangular channel; a fiber pre-forming plate is provided in the housing, a shaping groove is provided on the upper surface of the fiber pre-forming plate that matches the tooth portion of the internal toothed component, and an adhesive spraying mechanism, a fiber guide roller, a fiber lower pressure roller, a curing mechanism, a compacting roller body, a cutting mechanism, a winding mechanism and a discharge tray are provided above the fiber pre-forming plate. The present invention can not only flexibly and automatically realize the fiber interlacing combination of the composite material internal toothed component, but also realize the combination of multiple interlacing methods, so as to obtain an internal toothed component with dense structure, small porosity and continuous internal fibers, thereby fundamentally avoiding the problem of delamination failure of the internal toothed component.

Description

Technical Field

[0001] The present invention relates to the technical field of internal toothed component forming, and in particular to a forming device for reinforcing internal toothed components by interpenetrating continuous fibers. Background Art

[0002] Internal toothed components are one of the structural parts widely used in the fields of aerospace, weapons and equipment, and automobiles and ships. They have a typical toothed structure distributed at the center of rotation or the geometric center of the cross section, and are also called internal toothed structures. The internal toothed structural surface is the main load-bearing surface, which plays the role of load transfer, impact resistance and positioning connection. It plays a vital role in working environments such as high-speed movement and heavy load impact. Traditional internal toothed components are mostly made of metal materials such as steel, magnesium alloy, and aluminum alloy. As the application environment has continuously improved the requirements for weight reduction, toothed components tend to use fiber-reinforced composite materials, which can achieve a 30% weight reduction compared to aluminum alloy to meet the requirements of light weight and high strength.

[0003] Fiber-reinforced internal toothed components, with fibers acting as structural reinforcement and playing a key load-bearing role, can be categorized into short fiber-reinforced and continuous fiber-reinforced forms based on fiber length. Short fiber-reinforced internal toothed components are often formed by compression molding or injection molding, resulting in discrete fiber distribution within the formed structure and discontinuous fiber distribution at the tooth-shaped locations. This results in poor structural load-bearing performance and makes it difficult to meet performance requirements. Continuous fiber-reinforced internal toothed components, on the other hand, are formed by hand lay-up of composite materials combined with autoclaving, pultrusion, or compression molding of composite preforms to achieve continuous fiber distribution. The fibers are distributed parallel to the thickness, making these components prone to delamination failure under strong impact and heavy loads. Summary of the Invention

[0004] At least in order to solve the technical problems mentioned in the background art, the present invention aims to provide a forming device for reinforcing an internal toothed component by interpenetrating continuous fibers.

[0005] The present invention adopts the following technical solutions.

[0006] A forming device for reinforcing an internal toothed component by interweaving continuous fibers, comprising a drive motor assembly mounted on a side panel of a housing, the motor output end of the drive motor assembly being connected to a shifting block, a plurality of fiber yarn rollers being arranged inside the shifting block, a rectangular channel being provided on the side panel of the housing, a connecting rod of each fiber yarn roller being inserted into the rectangular channel and laterally limited, and when the motor drives the shifting block to rotate, the shifting block shifts the fiber yarn rollers along the rectangular channel; a fiber pre-forming plate being arranged within the housing, a shaping groove being provided on the surface of the fiber pre-forming plate that matches the teeth of the internal toothed component; an adhesive spraying mechanism, a fiber guide roller, a fiber lower pressure roller, a curing mechanism, a compacting roller, a cutting mechanism, a winding mechanism, and a discharge tray being arranged in sequence above the fiber pre-forming plate;

[0007] Among them, a fiber material roll is placed on the fiber yarn roll, and the fiber bundle on the fiber material roll is a bundle of fibers twisted or arranged by multiple fibers; the spraying mechanism is used to spray the adhesive on the drawn fiber bundle; the fiber guiding roll is used to guide the fiber bundle adhered with the adhesive into the fiber preforming plate and preliminarily solidify and form a preformed sheet material; the fiber pressing roll is used to preliminarily compact the preformed sheet material on the fiber preforming plate; the curing mechanism is used to cure and form the preformed sheet material; the compaction roll body is used to secondarily compact and push forward the preliminarily compacted sheet material; the cutting mechanism is used to cut the cured sheet material into standard parts; the winding and forming mechanism is used to wind the standard parts into an inner toothed member.

[0008] [0007 As a preferred solution, a plurality of the shifting blocks are arranged side by side. The number of fiber yarn rolls above the shifting blocks is the same as that of the fiber yarn rolls below the shifting blocks. When the same shifting block rotates, it simultaneously moves the upper and lower fiber yarn rolls by the same stroke.

[0009] [0008 In order to be able to more smoothly shift two fiber yarn rolls simultaneously and prevent adjacent shifting blocks from interfering with each other, the shifting block includes a first shifting rod and a second shifting rod integrally formed. The top surface of the first shifting rod is lower than the bottom surface of the second shifting rod, and the first shifting rod and the second shifting rod together form a "V" - shaped structure with mutual dislocation.

[0010] As a preferred solution, the included angle between the first shifting rod and the second shifting rod is 90 - 160°.

[0011] In order to guide the shifting block to stably move along the circumferential path or along the up - down path and effectively realize the alternating interpenetration of fibers inside the composite material, grooves are provided on the side plate of the housing, and a plurality of inclined blocks arranged side by side are spaced in the grooves. The space between the inclined block and the side wall of the groove serves as the first channel for the circumferential movement of the fiber yarn roll, and the space between adjacent inclined blocks serves as the second path for the up - down movement of the fiber yarn roll. There is a gap between the inner wall of the inclined block and the bottom wall of the groove, and this gap is used to accommodate the convex edge at the tail of the connecting rod.

[0012] In a preferred solution, the top surfaces of all the inclined blocks are located on the same horizontal plane, the two opposite inclined walls of adjacent inclined blocks are parallel to each other, the lower side wall of the groove is in a toothed structure, and the tooth part of this toothed structure is below the space between adjacent inclined blocks.

[0013] Furthermore, a plurality of curing flow channel loops are provided on the fiber preforming plate, and the curing flow channel loops are externally connected to a constant - temperature fluid supply system or a temperature control device.

[0014] Further, the fiber guiding roller includes a plurality of annular protrusions arranged at intervals on the shaft. The annular protrusions, the recesses between adjacent annular protrusions have the same tooth structure as the tooth part of the internal tooth-shaped member. There is an adhesive injection port on the slope of the annular protrusion. Adopting such a solution is more conducive to the adhesive material infiltrating into the fiber material.

[0015] Preferably, the coiling mechanism includes an internal tooth shaping roller, an outer arc shaping roller and a discharge guiding roller that are parallel to each other. The internal tooth shaping roller is located obliquely below the outer arc shaping roller, and the discharge guiding roller is located outside the internal tooth shaping roller.

[0016] In order to cut the cured sheet material into standard parts more smoothly, the fiber preformed plate is horizontally arranged, and the cutting path of the cutting mechanism is located in the vertical plane where the right end of the fiber preformed plate is located.

[0017] As a preferred solution, the curing mechanism uses pulsed xenon lamps, lasers, low-temperature nitrogen, infrared thermal light or ultraviolet light; the cutting method uses laser cutting, water jet cutting or grinding wheel cutting.

[0018] In order to achieve the rapid and uniform forming and separation of the internal tooth-shaped member, the internal tooth shaping roller and the outer arc shaping roller are respectively driven by motors, and the rotation speed range is 30-50 rpm. Among them, when the internal tooth shaping roller rotates every 60-120°, the outer arc shaping roller rotates 45-90°, and the angular velocity matching ratio when the internal tooth shaping roller and the outer arc shaping roller rotate is 1:1 to 1:3.

[0019] Beneficial effects: By adopting the present invention, not only can the continuous interpenetration combination of fibers of the composite internal tooth member be realized flexibly and automatically, but also various interpenetration methods and combinations of various fiber materials can be realized. An internal tooth-shaped member with dense tissue, small porosity, few defects and continuous internal fibers can be obtained. It also has the advantages of high forming efficiency and short process flow. The surface flatness, smoothness and uniformity of the obtained internal tooth-shaped member are good, which can effectively prevent the occurrence of flash in the composite material layup and fundamentally avoid the problem of delamination failure of the internal tooth-shaped member. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the forming device in the embodiment;

[0021] Figure 2 、 Figure 3 It is a schematic diagram of the part where the fiber yarn roller of the forming device in the embodiment is located;

[0022] Figure 4 It is a sectional schematic diagram of the part where the fiber yarn roller of the forming device in the embodiment is located;

[0023] Figure 5 It is a schematic diagram of the installation state of the dial block of the forming device in the embodiment;

[0024] Figure 6 Schematic diagram of a shifting block of a forming device in an embodiment;

[0025] Figure 7 Schematic diagram of the fiber guide roller of the forming device in the embodiment;

[0026] Figure 8 Schematic diagram of a fiber pre-forming plate of a forming device in an embodiment;

[0027] Figure 9 、 Figure 10 This is a schematic diagram of the motion path of the inclined block of the forming device in application solution 1;

[0028] Figure 11 、 Figure 12 Schematic diagram of the motion path of the inclined block of the forming device in application scheme 2.

[0029] Figure 13 Schematic diagram of the internal toothed component formed in the embodiment application scheme. DETAILED DESCRIPTION

[0030] The following is a clear and complete description of the technical solutions of the present invention in conjunction with the embodiments and drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0031] Combine Figures 1 to 8 As shown, a forming device for reinforcing an internal toothed component by continuous fiber insertion includes a driving motor group 1 installed on a side plate 2 of a shell. The figure schematically shows a driving motor group 1 composed of six motors. The motor output end of the driving motor group 1 is connected to a shift block 3, and a total of six shift blocks 3 are arranged. Twelve fiber yarn rollers 4 are arranged on the inner side of the shift block 3. An annular channel is provided on the side plate 2 of the shell. The connecting rod 21 of each fiber yarn roller 4 is inserted into the annular channel and is laterally limited. When the motor drives the shift block 3 to rotate, the shift block 3 shifts the fiber yarn roller 4 to move along the annular channel; a fiber pre-forming plate 6 is provided in the shell, and a shaping groove is provided on the upper surface of the fiber pre-forming plate 6 to match the tooth portion of the internal toothed component; above the fiber pre-forming plate 6, an adhesive spraying mechanism 5, a fiber guide roller 7, a fiber lower pressure roller 8, a curing mechanism 9, a compacting roller body 10, a cutting mechanism 11, a winding mechanism and a discharge tray 15 are sequentially arranged;

[0032] Among them, a fiber material roll is placed on the fiber yarn roller 4, and the fiber filament bundle on the fiber material roll is a bundle of fibers twisted or arranged by multiple fibers; the spraying mechanism 5 is used to spray the adhesive on the drawn fiber filament bundle; the fiber guiding roller 7 is used to guide the fiber filament bundle adhered with the adhesive into the fiber preforming plate 6 and preliminarily cure and form to obtain a preformed sheet material; the fiber pressing roller 8 is used to preliminarily press the preformed sheet material on the fiber preforming plate 6; the curing mechanism 9 is used to cure and form the preformed sheet material; the pressing roller body 10 is used to secondarily press the preliminarily pressed sheet material and push it forward; the cutting mechanism 11 is used to cut the cured sheet material into standard parts; the winding and forming mechanism is used to wind the standard parts into an internal tooth-shaped component.

[0033] In this embodiment, the number of fiber yarn rollers 4 above the shifting block 3 is the same as that of the fiber yarn rollers 4 below the shifting block 3. In the figure, six fiber yarn rollers 4 are arranged both above and below the shifting block 3. When the same shifting block 3 rotates, it simultaneously moves the upper and lower fiber yarn rollers 4 by the same stroke.

[0034] In this embodiment, combined with Figure 6 As shown, the shifting block 3 includes a first shifting rod 31 and a second shifting rod 32 integrally formed. The top surface of the first shifting rod 31 is lower than the bottom surface of the second shifting rod 32. The first shifting rod 31 and the second shifting rod 32 together form a "V"-shaped structure with a dislocation. The included angle between the first shifting rod 31 and the second shifting rod 32 is any value between 90° and 160°.

[0035] In this embodiment, a groove 22 is provided on the side plate 2 of the housing. Six inclined blocks 23 arranged side by side are spaced in the groove 22. The space between the inclined block 23 and the side wall of the groove 22 serves as the first channel for the circumferential movement of the fiber yarn roller 4, and the space between adjacent inclined blocks 23 serves as the second path for the up and down movement of the fiber yarn roller 4. There is a gap between the inner wall of the inclined block 23 and the bottom wall of the groove 22, and this gap is used to accommodate the convex edge 24 at the tail of the connecting rod 21. The top surfaces of all the inclined blocks 23 are located on the same horizontal plane, and the two opposite inclined walls of adjacent inclined blocks 23 are parallel to each other. The lower side wall of the groove 22 is in a tooth-shaped structure, and the tooth part of this tooth-shaped structure is below the space between adjacent inclined blocks 23.

[0036] In this embodiment, combined with Figure 8 As shown, the fiber preforming plate 6 includes a plate body and strip-shaped protrusions 602 provided on the plate body. The concave portions 603 between adjacent strip-shaped protrusions 602 are consistent with the tooth part structure of the internal tooth-shaped component. A plurality of curing flow channel loops 601 are provided on the fiber preforming plate 6, and the curing flow channel loops 601 are externally connected to a constant temperature fluid supply system or a temperature control device; combined with Figure 7As shown, the fiber guide roller 7 includes a plurality of annular protrusions 702 arranged at intervals on the shaft 704, the annular protrusions 702 and the recesses 701 between adjacent annular protrusions 702 are consistent with the tooth structure of the internal toothed component, and an adhesive injection port 703 is provided on the slope surface of the annular protrusion 702; the roll-type mechanism includes an internal tooth shaping roller 12, an outer arc shaping roller 13 and a discharge guide roller 14 parallel to each other, the internal tooth shaping roller 12 is located obliquely below the outer arc shaping roller 13, and the discharge guide roller 14 is located outside the internal tooth shaping roller 12; the cutting path of the cutting mechanism 11 is located on the vertical plane where the right end of the fiber pre-forming plate 6 is located.

[0037] The application scheme 1 of the forming device in this embodiment is used to prepare Figure 12 For the internal toothed component shown, the steps are as follows:

[0038] Step 1: Combine Figure 9 and Figure 10 As shown, a T300 carbon fiber tow roll is placed on the fiber yarn roller 4, and the motor is controlled to operate in a step-by-step manner to drive the shift block 3 to rotate counterclockwise. The angle between the first shift lever and the second shift lever of the shift block 3 is 150°. The shift block 3 rotates counterclockwise to shift the fiber yarn roller 4 to move, and the fiber yarn roller 4 makes a circular motion in the groove 22. The motion path is shown by the arrow in the figure. At the same time, the fiber material roll on the fiber yarn roller 4 releases the continuous fiber tow, and the fiber tow tension is 80N, realizing the interlaced alternating combination of the continuous fiber tow. At the same time, when the pulled fiber tow passes directly below the nozzle of the adhesive spraying mechanism 5, the adhesive (epoxy resin) is sprayed onto the fiber tow, and the pressure in the adhesive spraying pipe is 1.5MPa.

[0039] Step 2: The fiber tow with the adhesive is further pulled and guided by the fiber guide roller 7 onto the fiber pre-forming plate 6, where it is initially solidified to form a preformed sheet. The constant temperature fluid in the curing flow path 601 on the fiber pre-forming plate 6 is hot water at 80-100°C.

[0040] Step 3: As the fiber guide roller 7 rotates at a speed of 200 rpm, the preformed sheet material moves along the fiber preforming plate 6 to the bottom of the fiber pressing roller 8 for preliminary compaction. The speed of the fiber pressing roller 8 is controlled at 100 rpm and the pressure is controlled at 5 MPa.

[0041] Step 4: As the fiber lower pressing roller 8 rotates, the pre-compacted sheet material is pushed under the curing device and compacting roller 10. The curing device (pulse xenon lamp curing device) further solidifies and shapes the pre-formed sheet material and removes bubbles. The compacting roller 10 compacts the pre-compacted sheet material for a second time and pushes it forward. The power of the pulse xenon lamp curing device is 1.2 kW, the speed of the compacting roller 10 is controlled at 100 rpm, and the pressure is controlled at 5 MPa.

[0042] Step 5: After the billet after secondary compaction is pushed forward and is about to enter the coiling mechanism, start the motor to drive the internal tooth shaping roller 12 and the outer arc shaping roller 13 to rotate. The rotational speed of the internal tooth shaping roller 12 is 50 rpm, and the rotational speed of the outer arc shaping roller is 30 rpm. Under the combined action of the internal tooth shaping roller 12 and the outer arc shaping roller 13, after the outer arc shaping roller rotates 60°, the flat billet will be extruded into a composite structure of a circular arc outer contour with internal teeth;

[0043] Step 6: Start the cutting mechanism 11 to cut the billet into standard parts. After the standard parts are output from the coiling mechanism, the internal tooth-shaped member 17 (T300 / epoxy resin tooth-shaped member) as shown in Figure 13 is obtained. The output internal tooth-shaped member enters the discharge tray and is collected.

[0044] Adopt Application Scheme 2 of the forming device in this embodiment to prepare the internal tooth-shaped member. The steps are as follows:

[0045] Step 11: As shown in combination with Figure 9 and Figure 10 , place the glass fiber tow stock roll on the fiber yarn roller 4, control the motor to run in a stepping manner to drive the block 3 to rotate counterclockwise. The included angle between the first lever and the second lever of the block 3 is 130°. The block 3 rotates counterclockwise to drive the fiber yarn roller 4 to move. The fiber yarn roller 4 moves in a left circular motion in the groove 22. The movement path is as shown by the arrow in the figure. At the same time, the fiber stock roll on the fiber yarn roller 4 releases continuous fiber tows. The tension of the fiber tows is 120 N, realizing the interpenetrating and alternating combination of continuous fiber tows. At the same time, when the pulled-out fiber tows pass directly below the nozzle of the adhesive spraying mechanism 5, the adhesive (PEEK resin powder, particle size 20 - 50 μm) is sprayed onto the fiber tows. The gas-powder flow pressure in the spraying pipe of the adhesive is 800 Pa;

[0046] Step 12: The fiber tows attached with the adhesive are continuously pulled and guided by the fiber guide roller 7 into the fiber preforming plate 6 and are preliminarily cured and formed into a preformed billet; among them, the constant temperature fluid in the curing flow path loop 601 on the fiber preforming plate 6 is 280 - 320 °C oil;

[0047] Step 13: As the fiber guide roller 7 rotates, the rotational speed of the fiber guide roller 7 is 200 rpm, the preformed billet will move along the fiber preforming plate 6 to below the fiber pressing roller 8 and be preliminarily compacted. The rotational speed of the fiber pressing roller 8 is controlled at 60 rpm, and the pressure is controlled at 10 MPa;

[0048] Step 4: As the fiber lower pressing roller 8 rotates, the pre-compacted sheet material is pushed under the curing device and the compacting roller 10. The curing device (low-temperature nitrogen) further solidifies the pre-formed sheet material and removes bubbles. The compacting roller 10 compacts the pre-compacted sheet material for the second time and pushes it forward. The gas flow pressure of the low-temperature nitrogen curing device is 5-10Pa, and the speed and pressure of the compacting roller 10 are controlled at 60rpm and 15MPa.

[0049] Step 05: When the sheet material after secondary compaction is pushed forward and is about to enter the rolling mechanism, the motor is turned on to drive the inner tooth shaping roller 12 and the outer arc shaping roller 13 to rotate. The speed of the inner tooth shaping roller 12 is 30rpm, and the speed of the outer arc shaping roller is 24rpm. Under the joint action of the inner tooth shaping roller 12 and the outer arc shaping roller 13, the sheet material after secondary compaction enters the rolling mechanism and the outer arc shaping roller rotates 120°. The straight sheet material will be extruded into a composite material structure with an arc-shaped outer contour and inner teeth;

[0050] Step 06: Start the cutting mechanism 11 to cut the sheet into standard pieces. When the standard pieces are output from the roll mechanism, the following is obtained: Figure 13 The internal toothed component 17 (glass fiber / PEEK toothed component) is shown. The output internal toothed component enters a discharge tray and is collected.

[0051] Referring to the third application scheme of the forming device in the embodiment, which is used to prepare an internal toothed component, the main difference between this scheme and the previous scheme is that an electric heating rod is used to replace the aforementioned constant temperature fluid and fluid supply system, and the cutting path of the cutting mechanism 11 is located on the inner side of the right end of the fiber preforming plate 6. The steps are as follows:

[0052] Step 11: Combine Figure 11 and Figure 12 As shown, T700 carbon fiber tow and Kevlar fiber tow are rolled into groups and placed on the fiber yarn roller 4 respectively. The motor is controlled to operate in a stepping manner to drive the shift block 3 to rotate clockwise. The angle between the first shift lever and the second shift lever of the shift block 3 is 130°. The shift block 3 rotates clockwise to shift the two fiber yarn rollers 4 arranged above and below to move up and down. The fiber yarn rollers 4 move up and down in the groove 22. The movement path is shown as follows. Figure 11 and Figure 12 As shown by the middle arrow, at the same time, the fiber material roll on the fiber yarn roller 4 releases the continuous fiber tow, and the tension of the fiber tow is 150N, so that the continuous fiber tow is interlaced and alternately combined. At the same time, when the drawn fiber tow passes directly under the nozzle of the adhesive spraying mechanism 5, the adhesive (phenolic resin) is sprayed onto the fiber tow, and the pressure in the adhesive spraying pipe is 1.2MPa.

[0053] Step 12: The fiber tow attached with the adhesive is continuously drawn and guided by the fiber guiding roller 7 onto the fiber preforming plate 6 and preliminarily cured and formed to obtain a preformed sheet; wherein, the electroheating temperature is controlled at 200 - 280 °C;

[0054] Step 13: As the fiber guiding roller 7 rotates, with the rotational speed of the fiber guiding roller 7 being 200 rpm, the preformed sheet will move along the fiber preforming plate 6 to the lower part of the fiber pressing roller 8 and be preliminarily compacted. The rotational speed of the fiber pressing roller 8 is controlled at 60 rpm, and the pressure is controlled at 10 MPa;

[0055] Step 14: As the fiber pressing roller 8 rotates, the preliminarily compacted sheet will be pushed to the lower part of the curing device and the compacting roller body 10. The preformed sheet is further cured and formed by the curing device (laser curing device) to remove bubbles, and the preliminarily compacted sheet is secondarily compacted and pushed forward by the compacting roller body 10; wherein, the power of the laser curing device is 2 KW, with a rectangular light spot. The rotational speed of the compacting roller body 10 is controlled at 60 rpm, and the pressure is controlled at 15 MPa;

[0056] Step 15: When the secondarily compacted sheet is pushed forward and is about to enter the coiling mechanism, the cutting mechanism 11 is activated to cut the sheet into standard parts; subsequently, the motor is activated to drive the inner tooth shaping roller 12 and the outer arc shaping roller 13 to rotate. The rotational speed of the inner tooth shaping roller 12 is 10 rpm, and the rotational speed of the outer arc shaping roller is 8 rpm. After the standard part is pushed into the coiling mechanism under the thrust of the subsequent sheet transfer, under the combined action of the inner tooth shaping roller 12 and the outer arc shaping roller 13, and after the outer arc shaping roller rotates 120°, the flat sheet will be extruded into a circular arc outer contour inner tooth composite structure;

[0057] Step 16: When the standard part is output from the coiling mechanism, the inner tooth-shaped member 17 (T700 - Kevlar / phenolic resin tooth-shaped member) as shown in Figure 13 is obtained. The output inner tooth-shaped member enters the discharge tray and is collected.

[0058] Adopting the three schemes in the embodiment, it only takes 5 - 10 minutes to form an inner tooth-shaped member.

[0059] Taking the manufactured internal tooth-shaped component as an example (with a thickness of 25 mm, a tooth height of 5 mm, a length of 200 mm, and a width of 15 mm), the porosity of the internal tooth-shaped components obtained by applying Schemes 1, 2, and 3 are 3%, 6%, and 7.5% respectively, and the surface roughness is Ra1.6; by testing the mechanical properties, the compressive resistance of the formed T300 / epoxy resin tooth-shaped component, glass fiber / PEEK tooth-shaped component, and T700-Kevlar / phenolic resin tooth-shaped component reach 285 MPa, 405 MPa, and 388 MPa respectively; the realization method of the three components is the fragmentation of the matrix material, and no delamination phenomenon occurs.

[0060] By adopting the present invention, not only can the fiber interpenetration combination of the composite internal tooth component be realized flexibly and automatically, but also the combination of multiple interpenetration methods can be realized. An internal tooth-shaped component with a dense structure, small porosity, few defects, and continuous internal fibers can be obtained. It also has the advantages of high forming efficiency and short process flow. The surface flatness, smoothness, and uniformity of the obtained internal tooth-shaped component are good, which can effectively prevent the occurrence of flash in the composite material layup, and fundamentally avoid the problem of delamination failure of the internal tooth-shaped component.

Claims

1. A forming device for enhancing an internally toothed member by interpenetrating continuous fibers, comprising a drive motor set (1) installed on the side plate (2) of a housing, characterized in that: The motor output end of the driving motor group (1) is connected to the shift block (3), a plurality of fiber yarn rollers (4) are arranged inside the shift block (3), an annular channel is arranged on the side plate (2) of the shell, and the connecting rod (21) of each fiber yarn roller (4) is inserted into the annular channel and is laterally limited. When the motor drives the shift block (3) to rotate, the shift block (3) shifts the fiber yarn roller (4) to move along the annular channel; a fiber pre-forming plate (6) is arranged in the shell, and a shaping groove adapted to the tooth portion of the internal toothed component is provided on the upper surface of the fiber pre-forming plate (6); an adhesive spraying mechanism (5), a fiber guide roller (7), a fiber lower pressure roller (8), a curing mechanism (9), a compacting roller body (10), a cutting mechanism (11), a roll mechanism and a discharge tray (15) are arranged in sequence above the fiber pre-forming plate (6); Wherein, a fiber material roll is placed on the fiber yarn roller (4), and the fiber bundle on the fiber material roll is a bundle of fibers twisted or arranged by multiple fibers; the spraying mechanism (5) is used to spray the adhesive on the pulled-out fiber bundle; the fiber guide roller (7) is used to guide the fiber bundle with the adhesive attached to enter the fiber pre-forming plate (6), and preliminarily solidify and form it to obtain a preformed sheet material; the fiber lower pressing roller (8) is used to preliminarily compact the preformed sheet material on the fiber pre-forming plate (6); the solidifying mechanism (9) is used to solidify and form the preformed sheet material; the compacting roller body (10) is used to secondary compact the pre-compacted sheet material and push it forward; the cutting mechanism (11) is used to cut the solidified sheet material into standard parts; the winding and forming mechanism is used to roll the standard parts into internal toothed components.

2. The shaping device according to claim 1, characterized in that: The shifting blocks (3) are arranged in a plurality in parallel, and the number of the fiber yarn rollers (4) on the upper part of the shifting blocks (3) is the same as the number of the fiber yarn rollers (4) on the lower part of the shifting blocks (3). When the same shifting block (3) is rotated, the upper and lower fiber yarn rollers (4) are simultaneously shifted to move the same stroke.

3. The shaping device according to claim 2, characterized in that: The shift block (3) comprises an integrally formed first shift rod (31) and a second shift rod (32), wherein the top surface of the first shift rod (31) is lower than the bottom surface of the second shift rod (32), and the first shift rod (31) and the second shift rod (32) together form a mutually staggered "V"-shaped structure.

4. The shaping device according to claim 3, characterized in that: The included angle between the first shift lever (31) and the second shift lever (32) is 90-160°.

5. The shaping device according to any one of claims 1-4, characterized in that: A groove (22) is provided on the side plate (2) of the housing, and a plurality of inclined blocks (23) are arranged side by side at intervals in the groove (22). The space between the inclined blocks (23) and the side wall of the groove (22) serves as a first channel for the circumferential movement of the fiber yarn roller (4), and the space between adjacent inclined blocks (23) serves as a second path for the vertical movement of the fiber yarn roller (4). A gap is provided between the inner wall of the inclined block (23) and the bottom wall of the groove (22), and the gap is used to accommodate the convex edge (24) at the tail end of the connecting rod (21).

6. The shaping device according to claim 5, characterized in that: The top surfaces of all the inclined blocks (23) are located on the same horizontal plane, the two inclined walls of adjacent inclined blocks (23) are arranged facing each other and are parallel to each other, the lower side wall of the groove (22) is a tooth-shaped structure, and the space below the adjacent inclined blocks (23) is the tooth portion of the tooth-shaped structure.

7. The shaping device according to claim 6, characterized in that: A plurality of curing flow channel circuits (601) are arranged on the described fiber preforming plate (6), and the curing flow channel circuits (601) are externally connected to a constant temperature fluid supply system or a temperature control device.

8. The shaping device according to claim 7, wherein: The described fiber guiding roller (7) includes a plurality of annular protrusions (702) arranged at intervals on a shaft (704). The annular protrusions (702), the recesses (701) between adjacent annular protrusions (702) are consistent with the tooth structure of the internal tooth-shaped member, and an adhesive injection port (703) is arranged on the slope surface of the annular protrusion (702).

9. The shaping device according to claim 8, wherein: The coiling mechanism includes an internal tooth shaping roller (12), an outer arc shaping roller (13), and a discharge guiding roller (14) that are parallel to each other. The internal tooth shaping roller (12) is located obliquely below the outer arc shaping roller (13), and the discharge guiding roller (14) is located outside the internal tooth shaping roller (12).

10. The shaping device according to claim 9, characterized in that: The cutting path of the described cutting mechanism (11) is located in the vertical plane where the right end of the fiber preforming plate (6) is located / the vertical plane.

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