Carbon fiber round tube rolling equipment with automatic loading and unloading mandrel

Abstract

The present invention discloses a carbon fiber round tube rolling device with automatic loading and unloading mandrel, which relates to the field of carbon fiber tube processing technology, including an input device and an output device; the installation shaft at one end of the mandrel is connected to the motor shaft through a coupling sleeve, and the installation shaft at the other end is connected to the rotating shaft through a coupling sleeve; the coupling sleeve can be moved axially to realize the separation of the installation shaft from the motor shaft or the rotating shaft; a blocking member is provided on the input device; a conveying hook is provided at the end position of the input device; the mandrel is transported to the conveying hook through the input device, and the installation shafts at both ends of the mandrel are carried on the conveying hook and moved to the mandrel installation position as the conveying hook swings; the blocking member is driven to open and close by the up and down swing of the conveying hook. The device can realize continuous automatic positioning, installation and removal of the mandrel, so that the mandrel that has been rolled with carbon fiber cloth is automatically removed, and then the unrolled mandrel is automatically docked and installed with the motor for new rolling processing, which can greatly improve the rolling processing efficiency of the carbon fiber tube.

Description

Technical Field

[0001] The invention relates to the technical field of carbon fiber tube processing, in particular to a carbon fiber round tube rolling device with an automatically loading and unloading core shaft. Background Art

[0002] Carbon fiber tubes have many advantages such as high temperature resistance, corrosion resistance, wear resistance, high strength, long life, corrosion resistance, light weight and low density, so they are widely used in various industrial or life fields such as aviation and transportation.

[0003] The production and molding methods of carbon fiber tubes include rolling, molding, pultrusion and winding. The rolling method refers to applying a release agent or rolling release paper on the core shaft, and then winding the carbon fiber cloth on the core shaft to form a carbon fiber tube, which is then fully formed after surface treatment and baking.

[0004] In the current carbon fiber tube rolling equipment, the core shaft is detachably mounted on the equipment by bolts, and the core shaft is driven to rotate by a motor to achieve the rolling of the carbon fiber cloth. When the rolling is completed, the core shaft with the carbon fiber cloth needs to be manually removed and another core shaft is installed; the removed core shaft undergoes subsequent baking treatment, and after the treatment is completed, the formed carbon fiber tube is removed from the core shaft.

[0005] Therefore, each time a carbon fiber tube is prepared, the core shaft needs to be installed and disassembled once, which results in a relatively low efficiency of the carbon fiber tube rolling process. Summary of the Invention

[0006] In response to the above problems, the present invention provides a carbon fiber round tube rolling device with automatic loading and unloading of the core shaft. The device can realize continuous automatic positioning, installation and unloading of the core shaft, so that the core shaft after rolling the carbon fiber cloth is automatically unloaded, and then the unrolled core shaft is automatically docked and installed with the motor for new rolling processing, which can greatly improve the rolling processing efficiency of the carbon fiber tube.

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] A carbon fiber round tube winding device with automatic loading and unloading of a core shaft comprises a motor and a rotating shaft mounted on a frame; further comprising an input device for inputting the core shaft and an output device for outputting the core shaft; the mounting shaft at one end of the core shaft is connected to the motor shaft of the motor via a coupling sleeve, and the mounting shaft at the other end is connected to the rotating shaft via a coupling sleeve; the coupling sleeve can be moved axially to achieve the separation of the mounting shaft from the motor shaft or the rotating shaft; a blocking member for limiting the forward movement of the core shaft is provided on the input device; a conveying hook that can swing up and down is provided at the end position of the input device; the core shaft is conveyed to the conveying hook via the input device, and the mounting shafts at both ends of the core shaft are mounted on the conveying hook and move to the core shaft installation position as the conveying hook swings; the blocking member is driven to open and close by the up and down swinging of the conveying hook.

[0009] Compared with the prior art, the advantages of the present invention are:

[0010] Through the cooperation of the blocking member and the conveying hook, the mandrel on the input device can be automatically moved to the installation position, and the mandrel and the motor can be automatically connected through the movement of the coupling sleeve; through the cooperation of the conveying hook and the coupling sleeve, the rolled mandrel can be transported to the output device and conveyed out, thereby continuously realizing the automatic installation and unloading of the mandrel, and realizing the continuous removal of the rolled mandrel, thereby improving the rolling processing efficiency of the carbon fiber tube.

[0011] As a further improvement of the above technical solution, the input device is an inclined plate, and limit plates are provided on both sides of the input device.

[0012] The beneficial effects of the above improvements are: the core shaft is placed on the inclined plate and can automatically move forward under the action of gravity, and the limit plates at both ends can limit the axial movement of the core shaft, thereby ensuring the stability and accuracy of the core shaft movement.

[0013] As a further improvement of the above technical solution, the blocking member is in the shape of a vertical rod or an arc-shaped rod; a through hole is provided on the input device, and the upper end of the blocking member is arranged through the through hole and moves up and down in the through hole; the lower end of the blocking member is connected to the front end of the rocker arm; the rocker arm is installed on the frame or at the bottom of the input device through a hinge shaft, and a torsion spring is provided at the hinge; the conveying hook is provided with a protrusion for lifting the tail end of the rocker arm.

[0014] The beneficial effects of the above improvements are as follows: when the blocking member descends, the core shaft on the input device moves forward; when the blocking member rises, the core shaft is blocked by the blocking member and cannot move forward; when the conveying hook tilts upward, it drives the blocking member to descend, so that one of the core shafts can fall into the work station; when the conveying hook tilts downward, the rocker arm is reset under the action of the torsion spring, causing the blocking member to rise, thereby blocking the core shaft from entering.

[0015] As a further improvement of the above technical solution, the tail end of the conveying hook is installed at the bottom of the input device or on the frame through a hinge shaft; a first telescopic drive mechanism is hinged on the conveying hook; the other end of the first telescopic drive mechanism is hinged on the frame.

[0016] The technical effect of the above improvement is that the conveying hook is driven to swing by the extension and retraction of the first retractable drive mechanism.

[0017] As a further improvement of the above technical solution, the conveying hook includes a straight rod and a hook body arranged at the front end of the straight rod; the corner of the hook body is an arc shape that matches the diameter of the installation shaft.

[0018] The technical effect of the above improvement is that when the core shaft falls onto the conveying hook, it rolls downward along the straight rod of the conveying hook and then falls into the hook body, and the two ends of the core shaft are positioned by the hook body.

[0019] As a further improvement of the above technical solution, two conveying hooks are provided, and the distance between the two conveying hooks is greater than the length of the core shaft.

[0020] The technical effect of the above improvement is: the conveying hook is used to hook the installation shafts at both ends of the core shaft, thereby realizing the positioning of the installation shaft; the spacing between the conveying hooks is greater than the length of the core shaft, so that the core shaft can roll between the two conveying hooks without obstruction.

[0021] As a further improvement of the above technical solution, the first telescopic drive mechanism is an electric push rod, a pneumatic cylinder or an oil cylinder.

[0022] The technical effect of the above improvements is that the use of electric push rods can better control the telescopic positioning of the electric push rods; the air cylinder or oil cylinder will have a slightly faster operating speed.

[0023] As a further improvement of the above technical solution, the output device is an inclined plate or a conveyor belt; the output device is located below the conveying hook.

[0024] The technical effect of the above improvement is: after the core shaft falls into the output device, it rolls down along the inclined plate under the action of gravity to enter the next process; if a conveyor belt is used, after the core shaft falls into the conveyor belt, it is transported away along with the conveyor belt.

[0025] As a further improvement of the above technical solution, the coupling sleeve is rotatably arranged on the mounting rod; the other end of the mounting rod is sleeved on the sliding shaft; the mounting rod is driven to move on the sliding shaft by a second telescopic driving mechanism.

[0026] The technical effect of the above improvement is: the movement of the mounting rod is controlled by the extension and contraction of the second telescopic drive mechanism, and the mounting rod then drives the coupling sleeve to move axially, thereby connecting or separating the mounting shaft at the end of the core shaft and the motor shaft.

[0027] As a further improvement of the above technical solution, the cross-section of the mounting shaft end is polygonal; the inner hole of the coupling sleeve is in a shape that matches the outer wall of the mounting shaft.

[0028] The technical effect of the above improvement is that the coupling sleeve can drive the installation shaft to rotate synchronously. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall structure of the device.

[0030] Figure 2 This is a schematic diagram of the three-dimensional structure of this equipment.

[0031] Figure 3 It is a structural diagram of the tensioning device.

[0032] Figure 4 This is a three-dimensional schematic diagram of part of the structure in the molding device.

[0033] Figure 5 This is a schematic diagram of the roller installation structure on the first clamping roller group, the second clamping roller group, or the third clamping roller group.

[0034] Figure 6 It is a schematic diagram of the installation structure of the core shaft and the coupling sleeve.

[0035] Figure 7 The inner hole of the coupling sleeve is a hexagonal structure schematic diagram.

[0036] Figure 8 Schematic diagram of the installation position of the input device and the output device.

[0037] Figure 9 Schematic diagram of the input device from a top view.

[0038] Figure 10 Schematic diagram of the installation structure of the conveyor hook.

[0039] Figure 11 This is a schematic diagram of the conveying hook transporting the mandrel to the installation position.

[0040] Figure 12 This is a schematic diagram of the state where the conveying hook is separated from the core shaft after the core shaft is fixed by the coupling sleeve.

[0041] Figure 13 This is a schematic diagram of the core shaft being transported to the output device through the conveying hook after being detached.

[0042] Figure 14 The conveying hook tilts up, causing the blocking member to descend and prompting the core shaft to move onto the conveying hook.

[0043] Figure: 1, winding roller; 2, pre-needling cloth; 3, first clamping roller group; 4, tensioning roller; 6, second clamping roller group; 7, soaking roller; 8, third clamping roller group; 9, resin box; 10, collecting tank; 11, core shaft; 110, mounting shaft; 12, pressing roller; 13, vertical shaft; 14, bracket; 15, rocker; 16, conveying hook; 17, first telescopic drive mechanism; 18, protrusion; 19, rocker; 1 91. Connecting beam; 20. Blocking member; 21. Input device; 211. Limiting plate; 212. Conveyor belt / inclined plate; 22. Output device; 23. Coupling sleeve; 24. Mounting rod; 25. Sliding shaft; 26. Second telescopic drive mechanism; 27. Motor; 28. Rotating shaft; 31. Upper roller; 32. Lower roller; 33. Connecting rod; 34. Support; 35. Support column; 36. Through hole; 37. Adjusting bolt. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.

[0045] See also Figures 1 to 14 In a specific embodiment, a carbon fiber round tube winding device with automatic loading and unloading of a core shaft includes a motor 27 and a rotating shaft 28 installed on a frame; it also includes an input device 21 for inputting the core shaft 11 and an output device 22 for outputting the core shaft 11; the mounting shaft 110 at one end of the core shaft 11 is connected to the motor shaft of the motor 27 through a coupling sleeve 23, and the mounting shaft 110 at the other end is connected to the rotating shaft 28 through a coupling sleeve 23; the coupling sleeve 23 can move axially to realize the separation of the mounting shaft 110 from the motor shaft or the rotating shaft 28; a blocking member 20 is provided on the input device 21 for limiting the forward movement of the core shaft 11; a conveying hook 16 that can swing up and down is provided at the end position of the input device 21; the core shaft 11 is conveyed to the conveying hook 16 through the input device 21, and the mounting shafts 110 at both ends of the core shaft 11 are carried on the conveying hook 16 and move to the installation position of the core shaft 11 as the conveying hook 16 swings; the blocking member 20 is driven to open and close by the up and down swinging of the conveying hook 16.

[0046] Specifically, the motor shaft of motor 27 is coaxially mounted with a distance between it and the rotating shaft 28. A portion of coupling sleeve 23 is sleeved onto the motor shaft or rotating shaft 28. When the mandrel is moved to a working position, coupling sleeve 23 moves to enclose the mounting shaft 110 at the end of the mandrel. The other end of coupling sleeve 23 remains sleeved onto the motor shaft or rotating shaft 28, thereby connecting the mounting shafts 110 at both ends of the mandrel to the motor shaft and rotating shaft 28, respectively. This allows motor 27 to drive the mandrel to rotate synchronously. The coupling sleeve 23 rotates synchronously with the mandrel.

[0047] Specifically, the core shaft moves forward from the input device 21 and enters the conveying hook 16. The conveying hook 16 hooks the mounting shafts 110 at both ends of the core shaft and then swings to move the core shaft to a position coaxial with the motor shaft.

[0048] Specifically, the blocking member 20 is moved up and down on the input device 21 , and each time it is moved up and down, a core shaft enters the conveying hook 16 .

[0049] Further optimization is made based on the above embodiment: the input device 21 is an inclined plate, and limiting plates 211 are provided on both sides of the input device 21 .

[0050] Specifically, such as Figure 9 、 11 As shown, the input device 21 is in the shape of a plate inclined to the horizontal plane. The outer wall of the core shaft falls on the bottom surface of the input device 21 and moves, and the installation shafts at both ends are placed on the limit plate 211 and move.

[0051] Further optimization is made on the basis of the above embodiment: the blocking member 20 is in the shape of a vertical rod or an arc-shaped rod; a through hole is provided on the input device 21, and the upper end of the blocking member 20 is arranged to pass through the through hole and move up and down in the through hole; the lower end of the blocking member 20 is connected to the front end of the rocker arm 19; the rocker arm 19 is installed on the frame or at the bottom of the input device 21 through a hinge shaft, and a torsion spring is provided at the hinge; the conveying hook 16 is provided with a protrusion 18 for lifting the tail end of the rocker arm 19.

[0052] Specifically, such as Figure 11-14 As shown, the blocking member 20 is in the shape of an arc rod, and the blocking member 20 is driven by the rocker arm to rotate and swing to achieve up and down movement. The blocking member adopts an arc rod shape so that the position of the blocking member in the horizontal plane remains unchanged when it swings; two blocking members 20 are generally provided; two through holes are opened on the bottom surface of the input device 21; the blocking member 20 is installed through the through holes; the rocker arm 19 is installed at the bottom of the input device 21 through a hinge shaft; a torsion spring is installed at the hinge, which keeps the blocking member 20 in an upward state at all times; the blocking member 20 will only drop when the tail end of the rocker arm is lifted by the conveying hook 16.

[0053] Further optimization is performed based on the above embodiment: the tail end of the conveying hook 16 is installed at the bottom of the input device 21 or on the frame through a hinge shaft; a first telescopic drive mechanism 17 is hinged on the conveying hook 16; the other end of the first telescopic drive mechanism 17 is hinged on the frame.

[0054] Specifically, such as Figure 10-14 As shown, the conveying hooks 16 are connected by a rod body, and a protrusion 18 is provided on the rod body; the front end of the first telescopic drive mechanism 17 is connected to the outer side of the conveying hook 16 through a hinge shaft; each conveying hook 16 corresponds to a first telescopic drive mechanism 17.

[0055] Further optimization is made based on the above embodiment: the conveying hook 16 includes a straight rod and a hook body arranged at the front end of the straight rod; the corner of the hook body is an arc shape that matches the diameter of the installation shaft 110.

[0056] Specifically, such as Figure 11 As shown, the straight rod portion of the conveying hook 16 serves as a conveying surface for the mounting shaft 110 to roll, and the hook body portion serves as a positioning member for the mounting shaft 110 .

[0057] like Figure 10 As shown, the above embodiment is further optimized: two conveying hooks 16 are provided, and the distance between the two conveying hooks 16 is greater than the length of the core shaft.

[0058] Further optimization based on the above embodiment: the first telescopic driving mechanism 17 is an electric push rod or an air cylinder or an oil cylinder.

[0059] Further optimization is made based on the above embodiment: the output device 22 is an inclined plate or a conveyor belt; and the output device 22 is located below the conveying hook 16 .

[0060] like Figure 6-7 As shown, the above embodiment is further optimized: the coupling sleeve 23 is rotatably set on the mounting rod 24; the other end of the mounting rod 24 is sleeved on the sliding shaft 25; the mounting rod 24 is driven to move on the sliding shaft 25 by the second telescopic driving mechanism 26.

[0061] Specifically, a ball bearing is installed on the outer wall of the coupling sleeve 23, and the ball bearing is installed in the hole of the mounting rod 24; so that the coupling 23 can rotate in the inner hole of the mounting rod 24; the sliding shaft 25 is used to improve the movement stability of the mounting rod 24; the second telescopic drive mechanism 26 can be a cylinder, an oil cylinder or an electric push rod; the second telescopic drive mechanism 26 is used to drive the mounting rod 24 to move, thereby causing the coupling sleeve 23 to move axially.

[0062] Further optimization is made based on the above embodiment: the cross section of the end of the installation shaft 110 is polygonal; the inner hole of the coupling sleeve 23 is in a shape that matches the outer wall of the installation shaft 110 .

[0063] The overall structure of this equipment is:

[0064] A carbon fiber round tube rolling device with an automatic loading and unloading mandrel includes a discharging device, a tensioning device, a soaking device, and a forming device according to the process;

[0065] The discharging device comprises a winding roller 1 for winding the pre-needled cloth 2;

[0066] The tensioning device includes two groups of first clamping rollers 3 arranged side by side with a gap above for clamping the pre-needled cloth 2, and a tensioning roller 4 located below between the first clamping rollers 3 for tensioning the pre-needled cloth 2;

[0067] The soaking device includes a soaking roller 7 for pressing the pre-needled cloth 2 pulled from the tensioning device down to soak it in the resin box 9; a second clamping roller group 6 and a third clamping roller group 8 located above the soaking roller 7 for clamping both ends of the pre-needled cloth 2 for conveying;

[0068] The forming device includes a core shaft 11 for winding the pre-needled cloth 2 soaked in resin and a pressing roller 12 located above the core shaft 11 for pressing the pre-needled cloth 2.

[0069] Specifically, the pressing roller on the core shaft uses its own weight to press the product to prevent rebound during the rolling process, while increasing the core shaft's rolling force. One end of the core shaft is connected to a motor or a detachable rocker 15.

[0070] After the pre-needled fabric is wrapped, fiberglass is wrapped around the outer surface to prevent the product from rebounding. The product is then placed in a curing oven for curing at a temperature of 150-200°C for 24-48 hours.

[0071] After curing, it is directly impregnated and carbonized at high temperature (the same as the existing process) without CVI (traditionally required).

[0072] like Figure 1-2 As shown, a collection trough 10 is provided below the core shaft 11 for directing the resin to the resin box 9. The collection trough 10 is an inclined surface, with its lower end mounted on the resin box 9, and the core shaft 11 located above the collection trough 10. Using the collection trough, resin recovery is carried out, reducing costs and the number of workers required for cleaning.

[0073] The first clamping roller group 3 or the second clamping roller group 6 or the third clamping roller group 8 are all composed of an upper roller 31 and a lower roller 32; the two ends of the upper roller 31 are installed at the end of the connecting rod 33; the other end of the connecting rod 33 is hinged to the support 34 of the frame; a through hole 36 is provided on the connecting rod 33; the adjusting bolt 37 passes through the through hole 36 and is threadedly connected to the frame or the support column 35 on the frame.

[0074] Two soaking rollers 7 are installed parallel to each other in the resin box 9. The two soaking rollers 7 increase the stroke of the pre-needled cloth in the resin box, which is convenient for the full contact between the pre-needled cloth and the resin.

[0075] Both ends of the pressing roller 12 are mounted on a bracket 14 ; both ends of the bracket 14 are sleeved on a vertical shaft 13 on the frame through linear bearings.

[0076] The above embodiment is further optimized and improved: the pre-needled cloth 2 comprises a middle layer of carbon fiber cloth, and the upper and lower surfaces of the carbon fiber cloth are provided with carbon fiber mesh layers.

[0077] Based on the above embodiment, further optimization and improvement are made: the pre-needled cloth 2 is composed of carbon fiber cloth and carbon fiber web layers that are staggered and stacked.

[0078] Based on the above embodiment, further optimization and improvement are made: the friction coefficient of the roller surface of the first clamping roller group 3, the second clamping roller group 6, and the third clamping roller group 8 is 3.2-12.5.

[0079] Based on the above embodiment, further optimization and improvement are made: the surface roughness coefficient of the pressing roller 12 and the core shaft 11 is 0.8-3.2.

[0080] The working principle of the automatic loading and unloading function of this equipment:

[0081] like Figure 6-14 As shown, the core shaft 11 is input through the input device 21, which can be an inclined flat plate or a conveyor belt structure. When the blocking member 20 on the input device 21 descends, one of the core shafts 11 moves forward and falls onto the conveying hook 16; then the blocking member 20 rises to prevent the other core shafts 11 from moving forward.

[0082] The mounting shafts 110 at both ends of the core shaft 11 entering the conveying hook 16 are placed on the straight rod of the conveying hook 16 and roll forward, and finally fall into the hook body for positioning; the first telescopic drive mechanism 17 pushes the conveying hook 16 to swing upward, so that the core shaft on the hook body and the coupling sleeve 23 remain coaxial; the second telescopic drive mechanism 26 pushes the mounting rod 24 to move, thereby driving the coupling sleeve 23 to move forward, and sleeves the mounting shaft 110, so that the mounting shaft 110 is respectively connected to the motor shaft and the rotating shaft 28; then the first telescopic drive mechanism 17 retracts, driving the conveying hook 16 to descend, to prevent affecting the rotation of the mounting shaft 110.

[0083] The motor 27 is started to drive the motor shaft to rotate, and the motor shaft drives the core shaft to rotate through the coupling sleeve; the core shaft realizes the rolling of the pre-needled cloth or the rolling of the carbon fiber cloth.

[0084] When the core shaft 11 completes the winding of the carbon fiber cloth, the first telescopic drive mechanism 17 extends, causing the conveying hook 16 to rise, supporting the installation shafts 110 at both ends of the core shaft, and then the second telescopic drive mechanism 26 drives the coupling sleeve 23 to move, causing the installation shaft 110 to separate from the motor shaft and the rotating shaft 28 respectively; at this time, the installation shafts 110 at both ends of the core shaft fall on the hook body of the conveying hook 16.

[0085] The first telescopic driving mechanism 17 retracts, driving the conveying hook 16 to swing downward, and finally the core shaft falls from the hook body of the conveying hook 16 onto the output device 22 and is transported away by the output device 22.

[0086] The first telescopic drive mechanism 17 extends, driving the conveying hook 16 to swing upward to the highest position, so that the protrusion 18 pushes up the tail end of the rocker arm 19, and the front end of the initial rocker arm 19 swings downward, so that the blocking member 20 drops, and a new core shaft falls from the input device 21 onto the conveying hook 16; the first telescopic drive mechanism 17 immediately shortens, causing the conveying hook 16 to swing downward, so that the protrusion 18 no longer pushes up the tail end of the rocker arm 19, so that the rocker arm 19 is quickly reset under the action of the torsion spring, thereby causing the blocking member 20 to rise, preventing other core shafts on the input device from entering the conveying hook 16.

[0087] This reciprocating operation realizes the automatic loading and unloading of the core shaft.

[0088] The overall working principle of this device:

[0089] 1. Wrap the pre-needled fabric 2 around the winding roller 1 of the discharging device. The end of the winding roller 1 has a detachable rocker, which is used to roll the fabric.

[0090] 2. Through the tensioning device, the pre-needled fabric moves in a Z-shaped tensioning motion through the first clamping roller set 3 and the tensioning roller 4. Simultaneously, the downward pressure at the end of the connecting rod 33 can be adjusted by rotating the adjusting bolt 37, thereby adjusting the clamping force between the upper roller 31 and the lower roller 32. This in turn adjusts the friction force of the clamping roller set on the pre-needled fabric, thereby controlling the tension of the pre-needled fabric wrapping. These end rollers provide tension.

[0091] 3. Immersion device: Below is a resin tank 9 containing phenolic resin. Two lower soaking rollers 7 increase the travel of the pre-needled fabric in the resin tank, facilitating full contact between the pre-needled fabric and the resin. The second and third pinch roller groups 6 and 8 provide tension for the pre-needled fabric.

[0092] 4. Forming device: The pre-needled fabric is finally wound around a mandrel 11, which is covered with multiple layers of 1-3mm thick release paper. During the curing process, the release paper becomes brittle, allowing for demolding. A pressure roller 12 is located above the mandrel to maintain a balanced pressure using gravity during the winding process. A collection trough 10 is located below the mandrel to automatically collect the resin in the process into a resin tank. The preform tensile force is approximately 500kg to 5 tons.

[0093] 5. After wrapping the carbon cloth, wrap the outer surface with glass fiber to prevent the product from rebounding. After removing the mandrel, place it in a curing oven for curing at a temperature of 150°C-200°C for 24-48 hours.

[0094] 6. After curing, directly impregnate and carbonize at high temperature (same as the existing process) without CVI treatment.

[0095] The advantages of this equipment are as follows:

[0096] 1. Using this equipment to roll carbon fiber tubes can increase the tensile force and make the preform density reach 0.5g / cm 3 , ensuring sufficient density of the preform and the mechanical properties of the preform. At the same time, through the curing of the resin, it has sufficient strength, so that the product has sufficient strength without CVI (chemical vapor deposition), avoiding the shortcomings of traditional long tube CVI that is difficult to deposit and has uneven deposition density.

[0097] 2. The equipment can realize the continuous automatic positioning, installation and removal of the mandrel, so that the mandrel with the carbon fiber cloth rolled is automatically removed, and then the unrolled mandrel is automatically docked with the motor and installed for new rolling processing, which can greatly improve the rolling processing efficiency of the carbon fiber tube.

[0098] 3. The carbon cloth is clamped and conveyed by four sets of clamping rollers, so that the carbon cloth is conveyed in a Z-shaped manner, which increases the friction between the carbon cloth and the roller, increases the tension of the carbon cloth, and ensures that the density of the preform reaches 0.5g / cm 3 At the same time, the friction force can be controlled through the connecting rod and bolt structure.

[0099] 4. The friction coefficient of the roller that provides tension is 3.2-12.5, ensuring sufficient friction without damaging the carbon cloth. The surface roughness of the resin scraping roller and the mandrel roller is controlled at 0.8-3.2.

[0100] 5. Use pre-needled fabric with one layer of carbon cloth, two layers of mesh tire or two layers of carbon cloth and three layers of mesh tire, and make use of the strength of carbon cloth itself and the good bonding between mesh tire and mesh tire to make the product maintain good performance and no delamination.

[0101] 6. Use resin collection tank to recycle resin, reduce costs and reduce the number of workers cleaning.

[0102] 7. There is a roller structure on the core shaft, which uses the roller's own weight to press the product to ensure that the product will not rebound during the winding process, while increasing the winding force of the round tube.

[0103] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0104] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method of the present invention and its core ideas. The above is only a preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of the present invention.

Claims

1. A carbon fiber round tube rolling device with an automatic loading and unloading mandrel, comprising a motor (27) and a rotating shaft (28) mounted on a frame; characterized in that: The invention also includes an input device (21) for inputting a core shaft (11) and an output device (22) for outputting the core shaft (11); a mounting shaft (110) at one end of the core shaft (11) is connected to a motor shaft of a motor (27) through a coupling sleeve (23), and a mounting shaft (110) at the other end is connected to a rotating shaft (28) through a coupling sleeve (23); the coupling sleeve (23) can be moved in the axial direction to realize the separation of the mounting shaft (110) from the motor shaft or the rotating shaft (28); the input device (21) A blocking member (20) is provided on the top for limiting the forward movement of the core shaft (11); a conveying hook (16) that can swing up and down is provided at the end position of the input device (21); the core shaft (11) is conveyed to the conveying hook (16) through the input device (21), and the mounting shafts (110) at both ends of the core shaft (11) are mounted on the conveying hook (16) and move to the core shaft (11) mounting position as the conveying hook (16) swings; the blocking member (20) is driven to open and close by the up and down swinging of the conveying hook (16); The blocking member (20) is in the shape of a vertical rod or an arc-shaped rod; a through hole is provided on the input device (21), and the upper end of the blocking member (20) is arranged through the through hole and moves up and down in the through hole; the lower end of the blocking member (20) is connected to the front end of the rocker (19); the rocker (19) is installed on the frame or on the bottom of the input device (21) through a hinge shaft, and a torsion spring is provided at the hinge; the conveying hook (16) is provided with a protrusion (18) for lifting the tail end of the rocker (19); The coupling sleeve (23) is rotatably arranged on the mounting rod (24); the other end of the mounting rod (24) is sleeved on the sliding shaft (25); the mounting rod (24) is driven to move on the sliding shaft (25) by the second telescopic driving mechanism (26); The end cross-section of the mounting shaft (110) is polygonal; the inner hole of the coupling sleeve (23) is in a shape that matches the outer wall of the mounting shaft (110).

2. The carbon fiber round tube rolling equipment with automatic loading and unloading mandrel according to claim 1 is characterized in that: The input device (21) is an inclined plate, and limiting plates (211) are provided on both sides of the input device (21).

3. The carbon fiber round tube rolling equipment with automatic loading and unloading mandrel according to claim 1 is characterized in that: The tail end of the conveying hook (16) is mounted on the bottom of the input device (21) or on the frame via a hinge shaft; a first telescopic drive mechanism (17) is hinged on the conveying hook (16); the other end of the first telescopic drive mechanism (17) is hinged on the frame.

4. The carbon fiber round tube rolling equipment with automatic loading and unloading mandrel according to claim 3 is characterized in that: The conveying hook (16) comprises a straight rod and a hook body arranged at the front end of the straight rod; the corner of the hook body is in an arc shape that matches the diameter of the installation shaft (110).

5. The carbon fiber round tube rolling equipment with automatic loading and unloading mandrel according to claim 3 is characterized in that: Two conveying hooks (16) are provided, and the distance between the two conveying hooks (16) is greater than the length of the core shaft (11).

6. The carbon fiber round tube rolling equipment with automatic loading and unloading mandrel according to claim 3 is characterized in that: The first telescopic drive mechanism (17) is an electric push rod, an air cylinder, or an oil cylinder.

7. The carbon fiber round tube rolling equipment with automatic loading and unloading mandrel according to claim 1 is characterized in that: The output device (22) is an inclined plate or a conveyor belt; the output device (22) is located below the conveying hook (16).

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