Device for shaping broadened carbon fibers

Abstract

The utility model relates to the technical field of carbon fiber production, in particular to a carbon fiber after-widening shaping device, which comprises a widening mechanism, a shaping mechanism and a shaping mechanism, the widening mechanism comprises a plurality of vibrating rollers which are sequentially arranged along the conveying direction of carbon fibers, and the adjacent vibrating rollers have height difference; the yarn spraying mechanism is arranged on the output side of the widening mechanism and comprises a plurality of yarn spraying pumps arranged in the width direction of the carbon fiber breadth, hot melting yarn is arranged in the yarn spraying pumps, and nozzles of the yarn spraying pumps are perpendicularly arranged towards the breadth of the carbon fiber; the hot-pressing mechanism is arranged on the side, deviating from the widening mechanism, of the yarn spraying mechanism and comprises an upper pressing roller and a lower pressing roller which are arranged in parallel, a hot-pressing channel is formed between the outer axial surfaces of the upper pressing roller and the lower pressing roller, and the carbon fibers and the hot melting yarn penetrate through the hot-pressing channel. After the carbon fiber is broadened, the hot melting yarn is sprayed to the surface of the broadened yarn of the carbon fiber, and hot melting treatment is carried out, so that the conditions of yarn shrinkage and size change in the subsequent use process are effectively reduced, and the stability and consistency of product formation are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon fiber production, in particular to a carbon fiber shaping device after widening. Background Art

[0002] Carbon fiber is an inorganic high-performance fiber with a carbon content of more than 90% that is converted from organic fiber through a series of heat treatments. It has the characteristics of light weight, high strength, corrosion resistance, and high temperature resistance. It is widely used in aviation, automobiles, sports equipment and other fields.

[0003] The production process of carbon fiber mainly includes fiber spinning, pre-oxidation, carbonization and other steps. Among them, carbon fiber widening treatment is an important link in carbon fiber production. The carbon fiber precursor is evenly stretched in the width direction to achieve the required width. However, after the wide yarn is completed, due to the residual stress inside the carbon fiber, after the carbon fiber width is greatly increased, it is easy to cause the widened carbon fiber to shrink in subsequent use or processing. The yarn changes and the size changes, making it difficult to ensure the stability of the material performance.

[0004] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as an admission or any form of implication that the information constitutes the prior art known to those skilled in the art. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a carbon fiber shaping device after widening, so as to ensure the dimensional stability and product performance of the carbon fiber after widening.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a carbon fiber widening and shaping device, comprising:

[0007] A stretching mechanism, for stretching the carbon fiber precursor to form a stretched carbon fiber yarn, comprising a plurality of vibrating rollers arranged in sequence along the carbon fiber conveying direction, with a height difference between adjacent vibrating rollers;

[0008] A yarn spraying mechanism is provided on the output side of the widening mechanism, comprising a plurality of yarn spraying pumps arranged along the width direction of the carbon fiber, wherein the yarn spraying pumps are provided with hot melt yarns, and the nozzles of the yarn spraying pumps are arranged perpendicularly toward the width of the carbon fiber;

[0009] The hot pressing mechanism is arranged on the side of the yarn spraying mechanism away from the widening mechanism, and includes an upper pressing roller and a lower pressing roller arranged parallel to each other. A hot pressing channel is formed between the outer shaft surfaces of the upper pressing roller and the lower pressing roller for the carbon fiber widening yarn and the hot melt yarn to pass through.

[0010] Furthermore, the widening mechanism includes a plurality of groups of vibration components arranged at equal intervals, each group of the vibration components includes a vibration roller, and the height of each vibration roller can be adjusted.

[0011] Furthermore, each group of the vibration components also includes a first bracket and a first driving member. Two of the first bracket and the first driving member are provided, respectively located at the two ends of the vibration roller. The end of the vibration roller is movably connected to the first bracket, and the first driving member is fixedly provided on the top of the first bracket, and the output end is fixedly connected to the end of the vibration roller.

[0012] Furthermore, each of the yarn spraying pumps is provided with a feed port, and the feed ports are all arranged along the same side of the carbon fiber conveying direction.

[0013] Furthermore, the yarn spraying mechanism also includes a support plate and a main duct, the tops of multiple yarn spraying pumps are fixedly connected to the support plate by fasteners, the support plate reciprocates along the width direction of the carbon fiber widening yarn, the main duct is located on the side where the feed port is located, and each of the feed ports is connected to the main duct.

[0014] Furthermore, the hot pressing mechanism also includes a second bracket, a driving assembly and an adjusting assembly. The upper pressing roller and the lower pressing roller are respectively mounted on the second brackets on both sides. The driving assembly is located on the outside of the second bracket and is connected to one end of the lower pressing roller. The adjusting assembly is provided with two groups, which are respectively provided on the second brackets on both sides and fixedly connected to the two ends of the upper pressing roller.

[0015] Furthermore, the driving assembly includes a second driving member, a reduction gear box and a bearing. The end of the lower pressure roller is connected to the reduction gear box through the bearing, and the second driving member is connected to the other side of the reduction gear box.

[0016] Furthermore, the adjustment assembly includes a third driving member, a guide block and a positioning plate. The third driving member is fixedly arranged on the top of the second bracket, and the positioning plate is arranged on the outer side surface of the second bracket along the vertical direction. The guide block is sleeved on the end of the upper pressure roller and is slidably connected to the positioning plate. The output end of the third driving member is fixedly connected to the top of the guide block.

[0017] Furthermore, it also includes a winding mechanism, which is located on the side of the output end of the hot pressing mechanism, and includes a winding shaft and a winding frame. The winding frame is arranged on the bottom surface, and the winding shaft is arranged in a horizontal direction, and one end is rotatably connected to the winding shaft.

[0018] Furthermore, a baffle is provided at one end of the winding shaft facing the winding frame. The baffle is sleeved on the outer shaft surface of the winding shaft, and the diameter of the baffle is larger than the diameter of the winding shaft.

[0019] The beneficial effects of the present invention are as follows: the present invention sets a carbon fiber shaping device after widening, sprays hot-melt yarn onto the carbon fiber surface and performs hot-melt treatment after widening, which can effectively reduce the yarn shrinkage and size change during subsequent use, thereby ensuring the stability and consistency of product formation; by setting a plurality of vibrating rollers with height differences, the carbon fiber raw yarn is flattened by vibration, ensuring the uniformity of the yarn spreading process, so that it reaches the required width in the width direction, and at the same time reduces the damage to the fiber; by setting a yarn spraying pump, the hot-melt yarn can be evenly sprayed on the width of the carbon fiber according to the set trajectory, so that the position of the carbon fiber is fixed after hot pressing treatment, the sliding between fibers is reduced, the interlayer bonding strength of the composite material is improved, and the stability of the product size and performance after widening the yarn is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic structural diagram of a carbon fiber shaping device after widening in an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the working process of the carbon fiber post-widening shaping device in an embodiment of the present utility model;

[0023] Figure 3 This is a schematic plan view of a carbon fiber product after widening and shaping in an embodiment of the present invention;

[0024] Figure 4 This is a structural diagram of the widening mechanism in an embodiment of the present utility model;

[0025] Figure 5 This is a structural diagram of the yarn spraying mechanism in an embodiment of the present utility model;

[0026] Figure 6 This is a structural diagram of the hot pressing mechanism in an embodiment of the present utility model;

[0027] Figure 7 It is a structural schematic diagram of the winding mechanism in an embodiment of the present utility model.

[0028] Figure numerals: 1, carbon fiber; 2, hot-melt yarn; 10, widening mechanism; 10a, vibration assembly; 11, vibration roller; 12, first bracket; 13, first driving member; 20, spraying mechanism; 21, spraying pump; 21a, nozzle; 21b, feed port; 22, support plate; 23, main duct; 30, hot pressing mechanism; 31, upper pressure roller; 32, lower pressure roller; 33, second bracket; 34a, second driving member; 34b, reduction gear box; 34c, bearing; 35a, third driving member; 35b, guide block; 35c, positioning plate; 40, winding mechanism; 41, winding shaft; 42, winding frame; 43, baffle. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] like Figures 1 to 7 The carbon fiber shaping device shown includes:

[0033] The stretching mechanism 10 is used to stretch the carbon fiber 1 to form a stretched carbon fiber yarn, and includes a plurality of vibrating rollers 11 arranged in sequence along the conveying direction of the carbon fiber 1, with a height difference between adjacent vibrating rollers 11;

[0034] The spraying mechanism 20 is arranged on the output side of the widening mechanism 10, and includes a plurality of spraying pumps 21 arranged along the width direction of the carbon fiber 1. The spraying pumps 21 are provided with hot melt yarns 2, and the nozzles 21a of the spraying pumps 21 are arranged perpendicularly to the width of the carbon fiber 1.

[0035] The hot pressing mechanism 30 is arranged on the side of the yarn spraying mechanism 20 away from the widening mechanism 10, and includes an upper pressing roller 31 and a lower pressing roller 32 arranged parallel to each other. A hot pressing channel is formed between the outer axial surfaces of the upper pressing roller 31 and the lower pressing roller 32 for the carbon fiber widening yarn and the hot melt yarn to pass through.

[0036] The utility model provides a carbon fiber shaping device after widening, and after widening, sprays hot-melt yarn 2 onto the surface of the carbon fiber widening yarn 1 and performs hot-melt treatment, which can effectively reduce the yarn shrinkage and size change during subsequent use, thereby ensuring the stability and consistency of product formation; by providing a plurality of vibrating rollers 11 with height differences, the carbon fiber 1 raw yarn is flattened by vibration, ensuring the uniformity of the yarn spreading process, so that it reaches the required width in the width direction, and at the same time reduces the damage to the fiber; by providing a yarn spraying pump 21, the hot-melt yarn 2 can be evenly sprayed on the width of the carbon fiber 1 widening yarn according to the set trajectory, so that the position of the carbon fiber 1 is fixed after hot pressing treatment, the sliding between fibers is reduced, the interlayer bonding strength of the composite material is improved, and the stability of the product size and performance after widening is ensured.

[0037] On the basis of the above embodiment, the widening mechanism 10 includes a plurality of groups of vibration components 10a arranged at equal intervals, each group of vibration components 10a includes a vibration roller 11, and the height of each vibration roller 11 can be adjusted; ensuring that the carbon fiber 1 precursor is subjected to uniform tensile force during the entire widening process, avoiding local stress concentration, reducing fiber damage, and improving the uniformity of the widening effect; by adjusting the height of the vibration roller 11 according to different width requirements and fiber characteristics, precise widening of carbon fibers 1 of different widths can be achieved, thereby improving the adaptability and flexibility of the equipment.

[0038] On the basis of the above embodiment, each group of vibration components 10a also includes a first bracket 12 and a first driving member 13. There are two first brackets 12 and two first driving members 13, which are respectively located at the two ends of the vibration roller 11. The end of the vibration roller 11 is movably connected to the first bracket 12. The first driving member 13 is fixedly arranged on the top of the first bracket 12, and the output end is fixedly connected to the end of the vibration roller 11; the first bracket 12 can support the vibration roller 11, ensure uniform force, and thus ensure the stability and reliability of the vibration roller 11 during operation; the first driving member 13 provides the power required by the vibration roller 11 to achieve uniform stretching of the carbon fiber 1 precursor, and the two first driving members 13 are respectively fixedly arranged on the top of the first bracket 12 to ensure that the force at both ends of the vibration roller 11 is balanced, thereby avoiding displacement or damage of the vibration roller 11 due to uneven driving force.

[0039] On the basis of the above embodiment, each spray pump 21 is provided with a feed port 21b, and the feed ports 21b are all arranged along the same side of the conveying direction of the carbon fiber 1; ensuring that each spray pump 21 can independently and continuously supply the hot melt yarn 2, so that the supply of the hot melt yarn 2 is more flexible, and the feed amount of each spray pump 21 can be adjusted according to actual needs to adapt to carbon fibers 1 of different widths and different processing requirements; the unified direction setting of the feed port 21b can reduce pipeline crossing, reduce system complexity, and facilitate monitoring and adjustment of the flow of the hot melt yarn 2.

[0040] On the basis of the above embodiment, the yarn spraying mechanism 20 also includes a support plate 22 and a main duct 23. The tops of multiple yarn spraying pumps 21 are fixedly connected to the support plate 22 by fasteners. The support plate 22 reciprocates along the width direction of the carbon fiber 1. The main duct 23 is located on the side where the feed port 21b is located, and each feed port 21b is connected to the main duct 23; the reciprocating motion of the support plate 22 along the width direction of the carbon fiber widening yarn 1 enables the yarn spraying pump 21 to spray on the carbon fiber 1 to form a continuous curve, which can adapt to the processing requirements of carbon fibers 1 of different widths; the setting of the main duct 23 simplifies the pipeline design, can centrally manage the hot melt yarn 2, and is easy to maintain and operate.

[0041] On the basis of the above embodiment, the hot pressing mechanism 30 further includes a second bracket 33, a driving assembly and an adjusting assembly. The upper pressing roller 31 and the lower pressing roller 32 are respectively mounted on the second brackets 33 on both sides. The driving assembly is located on the outside of the second bracket 33 and is connected to one end of the lower pressing roller 32. The adjusting assembly is provided with two groups, which are respectively provided on the second brackets 33 on both sides and are fixedly connected to the two ends of the upper pressing roller 31; the second bracket 33 provides a stable support structure for the upper pressing roller 31 and the lower pressing roller 32 to ensure the stability and alignment accuracy of the rollers during the hot pressing process; the driving assembly is provided for the lower pressing roller The roller 32 provides power so that it can rotate and form thermal pressure on the lower surface of the carbon fiber 1. The driving component is located on the outside of the second bracket 33, which can facilitate power transmission and control while reducing interference with the carbon fiber 1 and the thermal fuse in the hot pressing channel; the adjustment component allows the position of the upper pressing roller 31 to be precisely adjusted, thereby adjusting the size of the hot pressing channel according to different production requirements. The two sets of adjustment components arranged on the second bracket 33 on both sides can enable the upper pressing roller 31 to maintain horizontal and vertical stability during adjustment and operation, reducing material damage caused by improper adjustment.

[0042] On the basis of the above embodiment, the drive assembly includes a second drive member 34a, a reduction gearbox 34b and a bearing 34c. The end of the lower pressure roller 32 is connected to the reduction gearbox 34b through the bearing 34c, and the second drive member 34a is connected to the other side of the reduction gearbox 34b; the second drive member 34a is connected to the reduction gearbox 34b as a power source to ensure effective power transmission. At the same time, through the deceleration effect of the reduction gearbox 34b and the connection effect of the bearing 34c, the lower pressure roller 32 is ensured to rotate smoothly under the action of the driving force, thereby ensuring the uniformity and stability of the hot pressing process of the carbon fiber 1.

[0043] On the basis of the above embodiment, the adjustment component includes a third driving member 35a, a guide block 35b and a positioning plate 35c. The third driving member 35a is fixedly arranged on the top of the second bracket 33, the positioning plate 35c is arranged on the outer side of the second bracket 33 along the vertical direction, the guide block 35b is sleeved on the end of the upper pressure roller 31, and is slidably connected to the positioning plate 35c, and the output end of the third driving member 35a is fixedly connected to the top of the guide block 35b; the third driving member 35a provides a power source for the adjustment component, so that the position of the upper pressure roller 31 can be precisely adjusted to achieve precise control of the upper pressure roller 31 to adapt to carbon fiber 1 materials of different thicknesses or different processing requirements; the guide block 35b and the positioning plate 35c provide a guiding effect for the adjustment of the upper pressure roller 31, ensuring linear motion during the adjustment process and reducing adjustment errors.

[0044] On the basis of the above embodiment, it also includes a winding mechanism 40, which is located on the side where the output end of the hot pressing mechanism 30 is located, and includes a winding shaft 41 and a winding rack 42. The winding rack 42 is arranged on the bottom surface, and the winding shaft 41 is arranged in a horizontal direction, and one end is rotatably connected to the winding shaft 41; the arrangement of the winding shaft 41 on the winding mechanism 40 enables the wide yarn of the carbon fiber 1 after hot pressing and shaping to be effectively wound and collected, which is convenient for subsequent storage, transportation and use; one end of the winding shaft 41 is rotatably connected to the winding rack 42, and the winding rack 42 provides a stable support for the winding shaft 41, ensuring stability and safety during the winding process.

[0045] On the basis of the above embodiment, a baffle 43 is further provided at one end of the winding shaft 41 facing the winding frame 42, and the baffle 43 is sleeved on the outer shaft surface of the winding shaft 41, and the diameter of the baffle 43 is larger than the diameter of the winding shaft 41; the setting of the baffle 43 can effectively prevent the carbon fiber 1 wide yarn from sliding out of one end of the winding shaft 41, ensuring the stability of the material during the winding process, preventing deformation or damage, and making the carbon fiber 1 wide yarn roll more uniform and tidy after winding, which is convenient for the storage and use of subsequent products.

[0046] Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and the specification are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A carbon fiber shaping device after widening, characterized in that: include: A stretching mechanism, for stretching the carbon fiber precursor to form a stretched carbon fiber yarn, comprising a plurality of vibrating rollers arranged in sequence along the carbon fiber conveying direction, with a height difference between adjacent vibrating rollers; A yarn spraying mechanism is provided on the output side of the stretching mechanism, comprising a plurality of yarn spraying pumps arranged along the width direction of the carbon fiber stretching yarn, wherein the yarn spraying pumps are provided with hot melt yarns, and the nozzles of the yarn spraying pumps are arranged perpendicularly toward the width of the carbon fiber stretching yarn; The hot pressing mechanism is arranged on the side of the yarn spraying mechanism away from the widening mechanism, and includes an upper pressing roller and a lower pressing roller arranged parallel to each other. A hot pressing channel is formed between the outer shaft surfaces of the upper pressing roller and the lower pressing roller for the carbon fiber widening yarn and the hot melt yarn to pass through.

2. The carbon fiber shaping device after widening according to claim 1, characterized in that: The widening mechanism includes a plurality of groups of vibration components arranged at equal intervals, each group of the vibration components includes a vibration roller, and the height of each vibration roller can be adjusted.

3. The carbon fiber shaping device after widening according to claim 2, characterized in that: Each group of the vibration components also includes a first bracket and a first driving member. Two of the first bracket and the first driving member are provided, respectively located at the two ends of the vibration roller. The end of the vibration roller is movably connected to the first bracket, and the first driving member is fixedly provided on the top of the first bracket, and the output end is fixedly connected to the end of the vibration roller.

4. The carbon fiber shaping device after widening according to claim 1, characterized in that: Each of the yarn spraying pumps is provided with a feed port, and the feed ports are all arranged along the same side of the carbon fiber conveying direction.

5. The carbon fiber shaping device after widening according to claim 4, characterized in that: The yarn spraying mechanism also includes a support plate and a main duct. The tops of multiple yarn spraying pumps are fixedly connected to the support plate by fasteners. The support plate reciprocates along the width direction of the carbon fiber stretched yarn. The main duct is located on the side where the feed port is located, and each feed port is connected to the main duct.

6. The carbon fiber shaping device after widening according to claim 1, characterized in that: The hot pressing mechanism also includes a second bracket, a driving assembly and an adjusting assembly. The upper pressing roller and the lower pressing roller are respectively mounted on the second brackets on both sides. The driving assembly is located on the outside of the second bracket and is connected to one end of the lower pressing roller. The adjusting assembly is provided with two groups, which are respectively provided on the second brackets on both sides and fixedly connected to the two ends of the upper pressing roller.

7. The carbon fiber shaping device after widening according to claim 6, characterized in that: The driving assembly includes a second driving member, a reduction box and a bearing. The end of the lower pressure roller is connected to the reduction box through the bearing, and the second driving member is connected to the other side of the reduction box.

8. The carbon fiber shaping device after widening according to claim 7, characterized in that: The adjustment assembly includes a third driving member, a guide block and a positioning plate. The third driving member is fixedly arranged on the top of the second bracket. The positioning plate is arranged on the outer side of the second bracket along the vertical direction. The guide block is sleeved on the end of the upper pressure roller and is slidably connected to the positioning plate. The output end of the third driving member is fixedly connected to the top of the guide block.

9. The carbon fiber shaping device after widening according to claim 1, characterized in that: It also includes a winding mechanism, which is located on the side of the output end of the hot pressing mechanism and includes a winding shaft and a winding frame. The winding frame is arranged on the bottom surface, the winding shaft is arranged in a horizontal direction, and one end is rotatably connected to the winding shaft.

10. The carbon fiber shaping device after widening according to claim 9, characterized in that: A baffle is further provided on one end of the winding shaft facing the winding frame. The baffle is sleeved on the outer shaft surface of the winding shaft, and the diameter of the baffle is larger than the diameter of the winding shaft.

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