An automated line for braiding, laying up and needling carbon-carbon crucible preforms

Abstract

The application provides a carbon-carbon crucible preform weaving, laying and needling automatic line, belongs to the carbon fiber preform production field, and is used for solving the problems that the carbon-carbon crucible preform weaving, laying and needling process cannot be integrally realized, the process efficiency is low, and the stability is poor in the prior art. The automatic line comprises a three-dimensional braiding machine, a mandrel assembly, a mandrel traction assembly and a laying and needling assembly. The mandrel traction assembly comprises a first mounting frame, a first support frame and a traction mechanism. The first mounting frame and the first support frame are arranged at two ends of the three-dimensional braiding machine respectively. The mandrel assembly is mounted on the traction mechanism. The two ends of the traction mechanism are arranged on the first mounting frame and the first support mechanism respectively. The laying and needling assembly for laying and needling a tire is arranged between the first mounting frame, the first support frame and the three-dimensional braiding machine. The mandrel core assembly is alternately moved between the laying and needling assembly and the three-dimensional braiding machine. The carbon-carbon crucible preform weaving, laying and needling integrated forming of any thickness is realized. The process efficiency is high, and the product quality is stable.

Description

Technical Field

[0001] This invention belongs to the field of carbon fiber preform production, and in particular relates to an automated line for weaving and punching carbon-carbon crucible preforms. Background Technology

[0002] Carbon-carbon crucible preforms are made from carbon fiber through processes such as weaving, laying, and needle punching. Current carbon fiber preform crucible production mainly involves weaving single bundles of yarn, laying a carbon mesh, and then needle punching. This results in preforms with low structural strength, and the production process requires multiple machines, leading to low efficiency and poor stability. Furthermore, each weaving or needle punching operation necessitates moving the core, which cannot meet the needs of producing multi-layered carbon fiber weaving and needle punching for crucible preforms of varying thicknesses. Summary of the Invention

[0003] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide an automated line for the braiding and punching of carbon-carbon crucible preforms, which solves the problems of low efficiency and poor stability in the braiding and punching process of carbon fiber crucible preforms, which cannot be integrated.

[0004] To achieve the above and other related objectives, the present invention provides an automated braiding and stitching line for carbon-carbon crucible preforms, comprising a three-dimensional braiding machine and a mandrel assembly.

[0005] The mandrel assembly includes a mounting tube, a mandrel, and a limiting and guiding mechanism. The mandrel is mounted on the outer wall of the mounting tube, and the limiting and guiding mechanism is disposed inside the mounting tube.

[0006] spindle traction assembly,

[0007] The mandrel traction assembly includes a first mounting frame, a first support frame, a traction mechanism, and a first support mechanism. The first mounting frame and the first support frame are respectively disposed at both ends of the three-dimensional knitting machine. The mandrel assembly is mounted on the traction mechanism. The first support mechanism for supporting the mandrel traction assembly is mounted on the first support frame. One end of the traction mechanism is mounted on the first mounting frame, and the other end of the traction mechanism passes through the knitting hole of the three-dimensional knitting machine and rests on the first support mechanism.

[0008] spiking components,

[0009] A needle-laying assembly is provided between the first mounting frame and the three-dimensional braiding machine, and between the three-dimensional braiding machine and the first support frame. Each needle-laying assembly includes a second mounting frame, a mesh laying mechanism for laying the mesh, a needle-punching mechanism for needle-punching the laid mesh, and a second support mechanism for supporting the mandrel traction assembly.

[0010] As an optional solution, the limiting guide mechanism includes a plurality of guide rollers for guiding the mandrel assembly, the plurality of guide rollers being arranged in an angular array along the inner circumference of the mounting tube;

[0011] A chain fixing block is also installed on the inner wall of the mounting tube, and the mounting tube is connected to the traction mechanism through the chain fixing block.

[0012] As an optional solution, the traction mechanism includes a first motor, a drive shaft, a chain, a shaft core guide plate, a driven shaft, a bridge plate, a sprocket, and a first mounting plate;

[0013] The first motor is mounted on the first mounting bracket, the drive shaft is rotatably mounted on the first mounting bracket, and the power output shaft of the first motor is connected to one end of the drive shaft;

[0014] Two shaft core guide plates are arranged in parallel. One end of each shaft core guide plate is mounted on the first mounting bracket via a bridge plate. The other end of each shaft core guide plate is fixed to a first mounting plate. The two ends of the driven shaft are respectively rotatably mounted on the two first mounting plates.

[0015] Both the drive shaft and the driven shaft are fixedly connected to sprockets. The chain is sleeved between the two sprockets and is located between the two shaft core guide plates. The mandrel assembly is fixed to the chain, and the chain drives the mandrel assembly to slide along the shaft core guide plates.

[0016] As an optional solution, the first support mechanism includes a first hydraulic cylinder, a first crossbar, a first U-shaped support plate, and a first guide rail module;

[0017] Both ends of the first support frame are equipped with a first hydraulic cylinder that extends and retracts in the vertical direction. The extension and retraction ends of the first hydraulic cylinders are fixed with a first crossbar. A first U-shaped support plate for supporting the shaft core guide plate is installed on the first crossbar.

[0018] A first guide rail assembly for guiding the vertical sliding of the first crossbar is also provided between the side wall of the first crossbar and the side wall of the first support frame.

[0019] As an optional solution, the netting laying mechanism includes a netting release assembly comprising a main clamping module, an auxiliary clamping module, a netting roll, and a second motor;

[0020] The main clamping module and the auxiliary clamping module are respectively installed at both ends of the top of the first mounting frame, and the tire coil is clamped between the main clamping module and the auxiliary clamping module;

[0021] The second motor is mounted on the top of the first mounting frame. The second motor drives the main clamping module to rotate and take in and out the net tire roll via a synchronous belt module.

[0022] As an optional solution, the needle-punching mechanism includes a second mounting plate, a third mounting plate, a slewing bearing, a rotating ring, a circular through hole, a third motor, gears, and several needle-punching modules;

[0023] The second mounting plate and the third mounting plate are respectively mounted on the side walls at both ends of the second mounting frame. The slewing bearing is rotatably mounted on the second mounting plate, and the rotating ring is rotatably mounted on the third mounting plate. The rotating ring is coaxial with the slewing bearing. Circular through holes are provided on both the second mounting plate and the third mounting plate.

[0024] Several needle-punching components are mounted on the slewing bearing and the rotating ring at their two ends respectively. The needle-punching components are arranged in an equiangular array along the circumference of the slewing bearing. The needle-punching components all needle the mesh tire by telescopic extension.

[0025] The third motor is mounted on the second mounting plate, and the gear is mounted on the power output shaft of the third motor. The gear meshes with the gear ring of the slewing bearing for transmission.

[0026] As an optional solution, the needle-punching module includes a fixed plate, a telescopic component, a lifting plate, a linear slide rail module, a side needle-punching module, a rounded corner needle-punching module, and an end face needle-punching module;

[0027] The two ends of the fixed plate are respectively installed on the slewing bearing and the rotating ring, the telescopic component is installed on the fixed plate, and multiple sets of linear slide rail modules are installed between the fixed plate and the lifting plate. The telescopic end of the telescopic component is connected to the lifting plate.

[0028] An end face needle punching module for needle punching the end face of the crucible preform is installed on the lifting plate. Both ends of the end face needle punching module are equipped with a rounded corner needle punching module and a side needle punching module for needle punching the rounded corners and sides of the crucible preform.

[0029] As an optional solution, the second support mechanism includes a second guide rail assembly, a second hydraulic cylinder, a second crossbar, and a second U-shaped slide plate;

[0030] The second mounting plate and the third mounting plate are each equipped with a second hydraulic cylinder that extends and retracts in the vertical direction. The extension and retraction ends of the second hydraulic cylinders are each fixed with a second crossbar. A second U-shaped slide plate for supporting the shaft core guide plate is installed on the second crossbar.

[0031] A second guide rail assembly for guiding the vertical sliding of the second crossbar is also provided between the side wall of the second crossbar and the second and third mounting plates.

[0032] As an optional solution, the bottom ends of the first mounting bracket, the first support bracket, and the second mounting bracket are all equipped with horizontal caster modules and vertical caster modules;

[0033] The mounting platforms at both ends of the three-dimensional knitting machine are provided with transverse and longitudinal sliding grooves. The transverse caster module can slide along the transverse sliding groove, and the longitudinal caster module can slide along the longitudinal sliding groove.

[0034] As described above, the automated crimping and barbing line for carbon-carbon crucible preforms of the present invention has at least the following beneficial effects:

[0035] 1. This application sets up piercing components on both sides of the three-dimensional braiding machine, and pulls the spindle core to move alternately between the piercing components and the three-dimensional braiding machine through the spindle traction components at both ends of the automatic line, so as to realize the integrated molding of piercing and weaving of carbon fiber crucible preforms of arbitrary thickness, with high process efficiency and stable product quality.

[0036] 2. This application, by setting up a traction mechanism and a first support mechanism and a second support mechanism, and by controlling the lifting of the first support mechanism and the second support mechanism and the traction direction of the traction mechanism, realizes the reciprocating movement of the shaft core between the three-dimensional braiding machine and the piercing components on both sides to carry out multi-layer carbon fiber braiding and piercing. The equipment has a high degree of automation and good stability.

[0037] 3. The piercing process in this application is all implemented in the second mounting frame. The mandrel does not need to switch positions during the piercing conversion process, which improves the efficiency of piercing. At the same time, by setting multiple sets of needle-piercing components on the outer circumference of the slewing bearing, the needle-piercing components can perform needle-piercing on multiple positions every time the slewing bearing rotates once, which improves the efficiency of needle-piercing. Attached Figure Description

[0038] Figure 1 The diagram shown is a structural schematic of the automated barbed wire line of the present invention.

[0039] Figure 2 The diagram shown is a structural schematic of the mandrel assembly of the present invention.

[0040] Figure 3 The diagram shown is a structural schematic of the first mounting frame and traction mechanism of the present invention.

[0041] Figure 4 The diagram shown is a structural schematic of the first support frame and the first support mechanism of the present invention.

[0042] Figure 5 The image shown is a front axonometric view of the burr-laying assembly of the present invention;

[0043] Figure 6 Shown is a rear axial view of the burr-laying assembly of the present invention;

[0044] Figure 7 Shown as the present invention Figure 3 A magnified view of a portion of point A in the middle.

[0045] In the diagram: 1 - 3D braiding machine;

[0046] 2-Mandrel assembly;

[0047] 201-Installation tube; 202-Mandrel; 203-Guide roller; 204-Chain fixing block; 205-Anti-rotation block; 206-Locking block; 207-Cover plate;

[0048] 3-Spindle traction assembly;

[0049] 301-First mounting bracket; 302-First support bracket; 303-First motor; 304-Drive shaft; 305-Chain; 306-Shaft guide plate; 307-Driven shaft; 308-Bridge plate; 309-Sprocket; 310-First mounting plate; 311-First hydraulic cylinder; 312-First crossbar; 313-First U-shaped support plate; 314-First guide rail module; 315-Top block; 316 Pad block; 317-Tensioning screw;

[0050] 4-Spike-laying components;

[0051] 401-First mounting bracket; 402-Main clamping module; 403-Auxiliary clamping module; 404-Wire mesh roll; 405-Second motor; 406-Second mounting plate; 407-Third mounting plate; 408-Slewing bearing; 409-Rotating ring; 410-Circular through hole; 411-Third motor; 412-Gear; 413-Fixed plate; 414-Telescopic component; 415-Lifting plate; 416-Linear slide rail module; 417-Side bar module; 418-Rounded corner needle punch module; 419-End face needle punch module; 420-Second guide rail assembly; 421-Second hydraulic cylinder; 422-Second crossbar; 423-Second U-shaped slide plate;

[0052] 501 - Horizontal caster module; 502 - Longitudinal caster module; 503 - Horizontal slide rail; 504 - Longitudinal slide rail; 505 - Fixing plate. Detailed Implementation

[0053] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0054] Please see Figures 1 to 7It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0055] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0056] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 This invention provides an automated braiding and stitching line for carbon-carbon crucible preforms, comprising a three-dimensional braiding machine 1 and a mandrel assembly 2.

[0057] The mandrel assembly 2 includes a mounting tube 201, a mandrel 202, and a limiting and guiding mechanism. The mandrel 202 is mounted on the outer wall of the mounting tube 201, and the limiting and guiding mechanism is disposed inside the mounting tube 201.

[0058] Spindle traction assembly 3

[0059] The mandrel traction assembly 3 includes a first mounting frame 301, a first support frame 302, a traction mechanism, and a first support mechanism. The first mounting frame 301 and the first support frame 302 are respectively disposed at both ends of the three-dimensional knitting machine 1. The mandrel assembly 2 is mounted on the traction mechanism. The first support mechanism for supporting the mandrel traction assembly 3 is mounted on the first support frame 302. One end of the traction mechanism is mounted on the first mounting frame 301, and the other end of the traction mechanism passes through the knitting hole of the three-dimensional knitting machine 1 and rests on the first support mechanism.

[0060] 4-ply paving component

[0061] A piercing assembly 4 is provided between the first mounting frame 301 and the three-dimensional braiding machine 1, and between the three-dimensional braiding machine 1 and the first support frame 302. The piercing assembly 4 includes a second mounting frame 401, a mesh laying mechanism for laying the mesh, a needle punching mechanism for piercing the laid mesh, and a second support mechanism for supporting the mandrel traction assembly 3.

[0062] In this embodiment, the mandrel assembly 2 is initially fixed to the traction mechanism, which pulls the mandrel 202 back and forth between the three-dimensional braiding machine 1 and the needle-punching assembly 4. The needle-punching assembly 4 lays the mesh onto the mandrel 202 and performs needle punching. The three-dimensional braiding machine 1 braids on the crucible preform after the needle-punched mesh is laid.

[0063] Please see Figure 1 , Figure 2 and Figure 4 The limiting and guiding mechanism includes a plurality of guide rollers 203 for guiding the spindle assembly 2, and the plurality of guide rollers 203 are arranged in an angular array along the inner circumference of the mounting tube 201.

[0064] A chain fixing block 204 is also installed on the inner wall of the mounting tube 201, and the mounting tube 201 is connected to the traction mechanism through the chain fixing block 204.

[0065] In this embodiment, the mandrel 202 is composed of two split hollow cylinders. During installation, the two hollow cylinders are fitted onto the mounting tube 201, and the anti-rotation block 205 installed on the mounting tube 201 is inserted into the anti-rotation groove in the middle of the hollow cylinder. The mandrel 202 is then locked onto the mounting tube 201 by the locking block 206, and a cover plate 207 is installed on the hollow cylinder on one side of the locking block 206.

[0066] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7 The traction mechanism includes a first motor 303, a drive shaft 304, a chain 305, a shaft core guide plate 306, a driven shaft 307, a bridge plate 308, a sprocket 309, and a first mounting plate 310.

[0067] The first motor 303 is mounted on the first mounting bracket 301, and the drive shaft 304 is rotatably mounted on the first mounting bracket 301. The power output shaft of the first motor 303 is connected to one end of the drive shaft 304.

[0068] Two shaft guide plates 306 are arranged in parallel. One end of each shaft guide plate 306 is mounted on the first mounting bracket 301 via a bridge plate 308. The other end of each shaft guide plate 306 is fixed to a first mounting plate 310. The two ends of the driven shaft 307 are respectively rotatably mounted on the two first mounting plates 310.

[0069] Both the drive shaft 304 and the driven shaft 307 are fixedly connected to sprockets 309. The chain 305 is sleeved between the two sprockets 309. The chain 305 is located between the two shaft core guide plates 306. The spindle assembly 2 is fixedly connected to the chain 305. The chain 305 drives the spindle assembly 2 to slide along the shaft core guide plate 306.

[0070] In this embodiment, the mounting tube 201 is fixedly connected to the chain 305, the first motor 303 drives the drive shaft 304 to rotate, and the chain 305 pulls the spindle assembly 2 to slide along the spindle guide plate 306.

[0071] In this embodiment, a tensioning module is also provided between the first mounting plate 310 and the shaft core guide plate 306. The first mounting plate 310 has an oblong through hole, and a screw passes through the oblong through hole to fix the first mounting plate 310 to the shaft core guide plate 306. A top block 315 is also installed on the shaft core guide plate 306, and a pad block 316 is installed on the first mounting plate 310. The tensioning screw 317 is threadedly connected to the top block 315, and the front end of the tensioning screw 317 abuts against the top block 315. When it is necessary to tension the chain 309, the screw in the oblong through hole is loosened, and the tensioning screw 317 is turned to tension the chain 309. After tensioning, the screw in the oblong through hole is tightened.

[0072] Please see Figure 1 , Figure 2 and Figure 4 The first support mechanism includes a first hydraulic cylinder 311, a first crossbar 312, a first U-shaped support plate 313, and a first guide rail module 314;

[0073] The first support frame 302 is equipped with a first hydraulic cylinder 311 that extends and retracts in the vertical direction at both ends. The extension and retraction ends of the first hydraulic cylinder 311 are fixed with a first crossbar 312. A first U-shaped support plate 313 for supporting the shaft core guide plate 306 is installed on the first crossbar 312.

[0074] A first guide rail assembly 314 for guiding the vertical sliding of the first crossbar 312 is also provided between the side wall of the first crossbar 312 and the side wall of the first support frame 302.

[0075] Please see Figure 1 , Figure 2 , Figure 5 and Figure 6The netting laying mechanism includes a netting release assembly comprising a main clamping module 402, an auxiliary clamping module 403, a netting roll 404, and a second motor 405;

[0076] The main clamping module 402 and the auxiliary clamping module 403 are respectively installed at both ends of the top of the first mounting frame 301, and the net tire roll 404 is clamped between the main clamping module 402 and the auxiliary clamping module 403.

[0077] The second motor 405 is mounted on the top of the first mounting bracket 301. The second motor 405 drives the main clamping module 402 to rotate and retract the net tire roll 404 via the synchronous belt module.

[0078] In this embodiment, during the laying of the mesh roll, the second motor 405 drives the main clamping module 402 to rotate, releasing the mesh roll 404. The free end of the mesh roll 404 is pulled and wound around the mandrel 202 once, and then the free end of the mesh roll 404 is cut off. The mesh roll on the mandrel 202 is then tightened using a tooling, and finally, the tightened mesh roll is needle-punched. In this embodiment, the pulling, laying, cutting, and tightening of the free end of the mesh roll 404 can all be achieved using mechanical components or manually; this application does not impose any limitations.

[0079] Please see Figure 5 and Figure 6 The needle-punching mechanism includes a second mounting plate 406, a third mounting plate 407, a slewing bearing 408, a rotating ring 409, a circular through hole 410, a third motor 411, a gear 412, and several needle-punching modules.

[0080] The second mounting plate 406 and the third mounting plate 407 are respectively mounted on the side walls at both ends of the second mounting bracket 401. The slewing bearing 408 is rotatably mounted on the second mounting plate 406. The rotating ring 409 is rotatably mounted on the third mounting plate 407. The rotating ring 409 is coaxially arranged with the slewing bearing 408. Circular through holes 410 are provided on both the second mounting plate 406 and the third mounting plate 407.

[0081] Several needle-punching components are respectively mounted on the slewing bearing 408 and the rotating ring 409 at both ends. The needle-punching components are arranged in an equiangular array along the circumference of the slewing bearing 408. The needle-punching components all needle the mesh tire by telescopic extension.

[0082] The third motor 411 is mounted on the second mounting plate 406, and the gear 412 is mounted on the power output shaft of the third motor 411. The gear 412 meshes with the gear ring of the slewing bearing 408 for transmission.

[0083] Please see Figure 5 and Figure 6The needle-punching module includes a fixed plate 413, a telescopic component 414, a lifting plate 415, a linear slide rail module 416, a side needle-punching module 417, a rounded corner needle-punching module 418, and an end face needle-punching module 419.

[0084] The two ends of the fixed plate 413 are respectively installed on the slewing bearing 408 and the rotating ring 409. The telescopic member 414 is installed on the fixed plate 413. Multiple sets of linear slide rail modules 416 are installed between the fixed plate 413 and the lifting plate 415. The telescopic end of the telescopic member 414 is connected to the lifting plate 415.

[0085] An end face needle punching module 419 for needle punching the end face of the crucible preform is installed on the lifting plate 415. Both ends of the end face needle punching module 419 are equipped with rounded corner needle punching modules 418 and side needle punching modules 417 for needle punching the rounded corners and sides of the crucible preform.

[0086] In this embodiment, the side-piercing module 417, the rounded corner piercing module 418, and the end-face piercing module 419 all include a cylinder and a piercing needle installed at the front end of the cylinder. The piercing needle is used to pierce the mesh on the crucible preform by extending and retracting the telescopic component. There are 3 sets of piercing modules. The 3 sets of piercing components are arranged to rotate 120° along the central axis of the slewing bearing 408. The telescopic component 414 and the lifting plate 415 are respectively arranged on the end faces of the fixed plate 413 on both sides. The telescopic component 504 is selected from a cylinder or an electric cylinder.

[0087] In this embodiment, after the mesh is laid, the needle-punching module needles the crucible mesh. The specific steps are as follows:

[0088] S4-1: Telescopic component 414 drives lifting plate 415 to descend into the piercing position;

[0089] S4-2: The side needle module 417 and the end face needle module 419 perform needle-piercing actions first, and after completion, the rounded corner needle module 418 performs needle-piercing actions;

[0090] S4-3: After a single acupuncture is completed, the third motor 411 drives the slewing bearing 408 to rotate at a predetermined angle, which drives the acupuncture module to rotate a certain arc length and then stops, so as to perform the next acupuncture.

[0091] S4-4: Repeat steps S4-2-S4-3 until the slewing bearing 408 rotates one revolution.

[0092] Please see Figure 1 , Figure 2 and Figure 3 The second support mechanism includes a second guide rail assembly 420, a second hydraulic cylinder 421, a second crossbar 422, and a second U-shaped slide plate 423;

[0093] The second mounting plate 406 and the third mounting plate 407 are each equipped with a second hydraulic cylinder 421 that extends and retracts in the vertical direction. The extension and retraction ends of the second hydraulic cylinder 421 are each fixed with a second crossbar 422. The second crossbar 422 is equipped with a second U-shaped slide plate 423 for supporting the shaft core guide plate 306.

[0094] A second guide rail assembly 420 for guiding the vertical sliding of the second crossbar 422 is also provided between the side wall of the second crossbar 422 and the second mounting plate 406 and the third mounting plate 407.

[0095] In this embodiment, initially, all the first U-shaped support plates 313 and the second U-shaped sliding plates support the shaft core guide plate 306. For ease of description, the second mounting bracket 401 closer to the first support frame 302 is defined as the left mounting bracket 4011, and the second mounting bracket 401 closer to the first mounting bracket 301 is defined as the right mounting bracket 4012. The specific steps for producing the crucible preform are as follows:

[0096] S1: The first crossbar 312 on the left side of the first support frame 302 descends, slides the spindle assembly 2 onto the spindle guide plate 306, and fixes the spindle assembly 2 to the chain 305. The spindle assembly 2 is located in the first support frame 302. The first crossbar 312 on the left side of the first support frame 302 rises to support the spindle guide plate 306.

[0097] S2: The first crossbar 312 on the right side of the first support frame 302 and the second crossbar 422 on the left side of the left mounting frame 4011 descend, and the traction mechanism moves the traction spindle assembly 2 into the left mounting frame 4011.

[0098] S3: The first crossbar 312 on the right side of the first support frame 302 and the second crossbar 422 on the left side of the second mounting frame 401 on the left side of the three-dimensional braiding machine 1 rise to support the core guide plate 306. The puncturing assembly first lays the mesh on the core shaft 202, and then punctures the laid mesh.

[0099] S4: The second crossbar 422 on the right side of the left mounting bracket 4011 descends, and the traction mechanism pulls the spindle assembly 2 to move to the three-dimensional braiding machine 1 for three-dimensional braiding;

[0100] S5: After the three-dimensional weaving is completed, the second crossbar 422 on the left side of the right mounting frame 4012 descends, the traction mechanism pulls the spindle assembly 2 to move into the right mounting frame 4012, the second crossbar 422 on the left side of the right mounting frame 4012 rises to support the spindle guide plate 306, and the piercing assembly on the right mounting frame 4012 performs piercing operation.

[0101] S6: After the piercing is completed, the second crossbar 422 on the left side of the right mounting frame 4012 descends, and the traction mechanism pulls the mandrel assembly 2 to move to the three-dimensional braiding machine 1 for weaving.

[0102] S7: After weaving is completed, the second crossbar 422 on the right side of the left mounting frame 4011 descends, the traction mechanism pulls the spindle assembly 2 to move into the left mounting frame 4011, the second crossbar 422 on the right side of the left mounting frame 4011 rises to support the spindle guide plate 306 in progress; the needle punching assembly on the left mounting frame 4011 performs needle punching.

[0103] S8: Repeat steps S2-S7 until the thickness of the crucible preform reaches the predetermined thickness, and the mandrel assembly 2 and the woven crucible preform are removed from the left side of the first support frame 302.

[0104] Please see Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The bottom ends of the first mounting bracket 301, the first support bracket 302, and the second mounting bracket 401 are all equipped with a horizontal caster module 501 and a vertical caster module 502.

[0105] The mounting platforms at both ends of the three-dimensional knitting machine 1 are provided with a transverse slide groove 503 and a longitudinal slide groove 504. The transverse caster module 501 can slide along the transverse slide groove 503, and the longitudinal caster module 502 can slide along the longitudinal slide groove 504.

[0106] In this embodiment, to fully utilize the production capacity of the 3D braiding machine 1 and meet the diverse product demands, the first mounting frame 301, the first support frame 302, and the two second mounting frames 401 of the automated line are designed as movable and detachable modules. These modules are fixed in predetermined positions using a fixing plate 505 for crucible preform production. When other products need to be produced, the traction mechanism is detached from the first mounting frame 301, the fixing plate 505 is removed, and the first mounting frame 301 and one second mounting frame 401 are moved to a longitudinal slide 504 on one side using the transverse caster module 501 and the transverse slide 503. The first support frame 302 and one second mounting frame 401 are moved to a longitudinal slide 504 on the other side. The equipment on both sides is then moved along the longitudinal slide 504, freeing up space on both sides of the 3D braiding machine 1 to facilitate the installation and production of other equipment. When crucible preform production is required again, the first mounting frame 301, the first support frame 302 and the two second mounting frames 401 are moved to the predetermined positions again, fixed by the fixing plate 505 and then production is carried out.

[0107] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. An automated weaving and stitching line for carbon-carbon crucible preforms, comprising a three-dimensional weaving machine, characterized in that, It also includes the spindle assembly, The mandrel assembly includes a mounting tube, a mandrel, and a limiting and guiding mechanism. The mandrel is mounted on the outer wall of the mounting tube, and the limiting and guiding mechanism is disposed inside the mounting tube. spindle traction assembly, The mandrel traction assembly includes a first mounting frame, a first support frame, a traction mechanism, and a first support mechanism. The first mounting frame and the first support frame are respectively disposed at both ends of the three-dimensional knitting machine. The mandrel assembly is mounted on the traction mechanism. The first support mechanism for supporting the mandrel traction assembly is mounted on the first support frame. One end of the traction mechanism is mounted on the first mounting frame, and the other end of the traction mechanism passes through the knitting hole of the three-dimensional knitting machine and rests on the first support mechanism. spiking components, A needle-laying assembly is provided between the first mounting frame and the three-dimensional braiding machine, and between the three-dimensional braiding machine and the first support frame. Each needle-laying assembly includes a second mounting frame, a mesh laying mechanism for laying the mesh, a needle-punching mechanism for needle-punching the laid mesh, and a second support mechanism for supporting the mandrel traction assembly. The limiting and guiding mechanism includes a plurality of guide rollers for guiding the mandrel assembly, and the plurality of guide rollers are arranged in an angular array along the inner circumference of the mounting tube. A chain fixing block is also installed on the inner wall of the mounting tube, and the mounting tube is connected to the traction mechanism through the chain fixing block; The traction mechanism includes a first motor, a drive shaft, a chain, a shaft core guide plate, a driven shaft, a bridge plate, a sprocket, and a first mounting plate; The first motor is mounted on the first mounting bracket, the drive shaft is rotatably mounted on the first mounting bracket, and the power output shaft of the first motor is connected to one end of the drive shaft; Two shaft core guide plates are arranged in parallel. One end of each shaft core guide plate is mounted on the first mounting bracket via a bridge plate. The other end of each shaft core guide plate is fixed to a first mounting plate. The two ends of the driven shaft are respectively rotatably mounted on the two first mounting plates. Both the drive shaft and the driven shaft are fixedly connected to sprockets. The chain is sleeved between the two sprockets and is located between the two shaft core guide plates. The mandrel assembly is fixed to the chain, and the chain drives the mandrel assembly to slide along the shaft core guide plates.

2. The automated crimping and barbing line for carbon-carbon crucible preforms as described in claim 1, characterized in that, The first support mechanism includes a first hydraulic cylinder, a first crossbar, a first U-shaped support plate, and a first guide rail module; Both ends of the first support frame are equipped with a first hydraulic cylinder that extends and retracts in the vertical direction. The extension and retraction ends of the first hydraulic cylinders are fixed with a first crossbar. A first U-shaped support plate for supporting the shaft core guide plate is installed on the first crossbar. A first guide rail assembly for guiding the vertical sliding of the first crossbar is also provided between the side wall of the first crossbar and the side wall of the first support frame.

3. The automated crimping and barbing line for carbon-carbon crucible preforms as described in claim 2, characterized in that, The netting laying mechanism includes a netting release assembly comprising a main clamping module, an auxiliary clamping module, a netting roll, and a second motor. The main clamping module and the auxiliary clamping module are respectively installed at both ends of the top of the first mounting frame, and the tire coil is clamped between the main clamping module and the auxiliary clamping module; The second motor is mounted on the top of the first mounting frame. The second motor drives the main clamping module to rotate and take in and out the net tire roll via a synchronous belt module.

4. The automated crimping and barbing line for carbon-carbon crucible preforms as described in claim 3, characterized in that, The needle-punching mechanism includes a second mounting plate, a third mounting plate, a slewing bearing, a rotating ring, a circular through hole, a third motor, gears, and several needle-punching modules; The second mounting plate and the third mounting plate are respectively mounted on the side walls at both ends of the second mounting frame. The slewing bearing is rotatably mounted on the second mounting plate, and the rotating ring is rotatably mounted on the third mounting plate. The rotating ring is coaxial with the slewing bearing. Circular through holes are provided on both the second mounting plate and the third mounting plate. Several needle-punching components are mounted on the slewing bearing and the rotating ring at their two ends respectively. The needle-punching components are arranged in an equiangular array along the circumference of the slewing bearing. The needle-punching components all needle the mesh tire by telescopic extension. The third motor is mounted on the second mounting plate, and the gear is mounted on the power output shaft of the third motor. The gear meshes with the gear ring of the slewing bearing for transmission.

5. The automated crimping and barbing line for carbon-carbon crucible preforms as described in claim 4, characterized in that, The needle-punching module includes a fixed plate, a telescopic component, a lifting plate, a linear slide rail module, a side needle-punching module, a rounded corner needle-punching module, and an end face needle-punching module; The two ends of the fixed plate are respectively installed on the slewing bearing and the rotating ring, the telescopic component is installed on the fixed plate, and multiple sets of linear slide rail modules are installed between the fixed plate and the lifting plate. The telescopic end of the telescopic component is connected to the lifting plate. An end face needle punching module for needle punching the end face of the crucible preform is installed on the lifting plate. Both ends of the end face needle punching module are equipped with a rounded corner needle punching module and a side needle punching module for needle punching the rounded corners and sides of the crucible preform.

6. The automated crimping and barbing line for carbon-carbon crucible preforms as described in claim 5, characterized in that, The second support mechanism includes a second guide rail assembly, a second hydraulic cylinder, a second crossbar, and a second U-shaped slide plate; The second mounting plate and the third mounting plate are each equipped with a second hydraulic cylinder that extends and retracts in the vertical direction. The extension and retraction ends of the second hydraulic cylinders are each fixed with a second crossbar. A second U-shaped slide plate for supporting the shaft core guide plate is installed on the second crossbar. A second guide rail assembly for guiding the vertical sliding of the second crossbar is also provided between the side wall of the second crossbar and the second and third mounting plates.

7. The automated crimping and barbing line for carbon-carbon crucible preforms as described in claim 6, characterized in that, The bottom ends of the first mounting bracket, the first support bracket, and the second mounting bracket are all equipped with horizontal caster modules and vertical caster modules; The mounting platforms at both ends of the three-dimensional knitting machine are provided with transverse and longitudinal sliding grooves. The transverse caster module can slide along the transverse sliding groove, and the longitudinal caster module can slide along the longitudinal sliding groove.

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