A carbon fiber pre-impregnated short-cut micro-rod sorting machine and micro-rod production line

Abstract

The application discloses a kind of carbon fiber pre-impregnation short-cut micro-rod sorting machine, micro-rod production line.The carbon fiber pre-impregnation short-cut micro-rod sorting machine includes screening panel and the vibration base of driving screening panel vibration, screening panel is sequentially provided with guide arc plate, screening panel and blanking funnel from top to bottom;Several guide arc plates are evenly equidistantly arranged on screening panel;Guide arc plate is wide below screening panel, and narrow above;Between two adjacent screening panels, gap is provided for micro-rod to pass;Several screening holes are provided below the gap, which penetrate the screening panel;The length of screening hole is slightly larger than the length of micro-rod.In working, micro-rod contacts guide arc plate, whether vertical or horizontal, will fall into the gap along the horizontal direction by the design of narrow top and wide bottom of guide arc plate, and will be drawn into blanking funnel through screening hole by vibration of vibration base.Compared with prior art, the application adopts guide arc plate and size-matched screening hole structure to realize micro-rod posture self-adaptive blanking sorting, reduce jamming and damage, and improve sorting reliability and pass rate.

Description

Technical Field

[0001] This invention relates to the field of carbon fiber prepreg chopped microrib production, and particularly to a carbon fiber prepreg chopped microrib sorting machine and microrib production line. Background Technology

[0002] In the preparation and application of carbon fiber prepreg chopped ribs, it is often necessary to classify, remove impurities, and sort the chopped ribs obtained by cutting continuous fiber bundles or filaments using a cutting device, in order to facilitate subsequent automated batching, molding, or composite material forming. However, existing sorting methods have many serious shortcomings when dealing with chopped ribs that are "extremely small in size, large in quantity, and fragile in material".

[0003] First, when short-cut microribs enter the sorter from the cutting end, their orientation can be vertical, horizontal, or any spatial direction, and their individual size and weight are extremely small. Traditional flat screens, simple aperture screens, or inclined screen surfaces often rely on the microribs to pass through the apertures or gaps in a specific orientation, resulting in a large number of microribs getting stuck, lying horizontally, or overturned on the screen surface, failing to fall stably into the predetermined channel, causing problems such as blockage, accidental falling, or secondary return, thereby reducing the sorting reliability and pass rate. In addition, microribs are prone to misalignment and accumulation when passing through screen holes or gaps, causing screen blockage and a sharp drop in throughput.

[0004] Secondly, for fine carbon filament segments of Φ2mm*7mm, which are inherently brittle and coated with pre-impregnated resin / substrate, traditional high-impact screening, airflow separation, or coarse rolling conveying methods can easily lead to micro-rib breakage, filament scattering, or damage to the surface coating, affecting the performance and consistency of subsequent finished products. Existing equipment lacks a targeted design that balances screening efficiency and micro-rib protection, often at the cost of sacrificing a certain yield rate or increasing rework rates.

[0005] Finally, during the short-cutting process, impurities (such as adhered resin clumps and fiber burrs) and oversized pieces (segments or pieces exceeding the target size) are often generated. These abnormal pieces need to be effectively removed or classified, but they are also prone to mixing with qualified microribs on the screen surface, causing mis-sorting or blockage. In addition, if the discharge port, discharge angle, and collection container of the sorting equipment are not adequately matched, the short-cut microribs are prone to secondary scattering or spillage during vibration and free fall, resulting in material loss and downstream contamination. Existing solutions are generally insufficient in dealing with actual cutting outputs containing impurities and oversized pieces, and in ensuring a tight discharge path and reliable collection. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to solve the problems in the prior art and provide a sorting machine and a production line for producing micro-ribs suitable for mass processing of short-cut micro-ribs.

[0007] The technical solution of the present invention: The present invention discloses a carbon fiber prepreg chopped microfiber sorting machine, including a screening panel and a vibrating base for driving the screening panel to vibrate. The screening panel is provided with a guide arc plate, a screen plate and a discharge funnel from top to bottom; a plurality of the guide arc plates are evenly and equidistantly arranged on the screen plate. The guide arc plate is wider at the bottom and narrower at the top near the screen plate; Between two adjacent screening plates, there is a gap for the micro-ribs to pass through; below the gap, there are several screening holes penetrating the screening plates; the length of the screening holes is slightly larger than the length of the micro-ribs. During operation, after the micro-ribs contact the guide arc plate, regardless of whether they are vertically or horizontally oriented, due to the narrow upper and wide lower design of the guide arc plate, they will fall horizontally into the gap. As the vibrating base vibrates, they are swept through the screening holes into the material discharge hopper.

[0008] Furthermore, the screening panel has a feeding guide plate at the feeding end and a discharging guide plate at the discharging end; the feeding guide plate is wider than the screening plate, which facilitates the collection of falling material.

[0009] Furthermore, the lower end of the discharge hopper is provided with a discharge outlet, which is located at the lowest point of the discharge hopper.

[0010] Furthermore, the vibration base is connected to the screening panel via a connecting plate; the connecting plate is provided with a material dropping angle adjustment hole that can adjust the tilt angle of the screening panel.

[0011] Furthermore, the material dropping angle adjustment hole is an arc-shaped through hole; the vibration base is connected to the connecting plate by a lockable bolt passing through the material dropping angle adjustment hole.

[0012] Furthermore, the guide arc plate is arranged along the length direction of the screen plate.

[0013] Furthermore, the guide arc plate has a thin-walled structure with a central hole, and the cross-section of the guide arc plate is arc-shaped.

[0014] Furthermore, a certain height anti-drop flange is provided along the periphery of the screening plate, and the connecting plate is fixedly connected to the screening panel through the anti-drop flange.

[0015] Furthermore, the vibrating base is mounted on the sorting machine support via a connecting plate. A material frame is located below the sorting machine support, which can be used to hold the short, chopped ribs discharged from the discharge hopper.

[0016] The present invention also discloses a carbon fiber prepreg chopped microrib production line, including a carbon fiber prepreg chopped microrib cutting device and any of the above-mentioned carbon fiber prepreg chopped microrib sorting machines.

[0017] The beneficial effects of this invention compared to the prior art are as follows: 1. This invention arranges a guide arc plate, a screening plate, and a discharge funnel sequentially from top to bottom on a screening panel. The guide arc plates are evenly spaced on the screening plate, forming gaps between adjacent screening plates and screening holes located below these gaps, with a length slightly greater than the length of the micro-ribs. The arc-shaped cross-section of the guide arc plate, narrower at the top and wider at the bottom, causes the micro-ribs to tend to move horizontally upon contact with the guide arc plate. Regardless of whether the micro-ribs are vertical or horizontal, the arc-shaped guide smoothly guides them, causing them to flip and fall into the adjacent gaps. Subsequently, because the length of the screening hole is slightly greater than the length of the micro-rib, the micro-ribs can smoothly pass through the screening hole and enter the discharge funnel under vibration. Therefore, through the geometric constraints of the guide arc plate and the dimensional matching between the length of the screening hole and the size of the micro-rib, this invention structurally achieves posture-independent adaptive discharge and sorting, significantly reducing jamming, incorrect discharge, and mechanical damage to the micro-ribs, thereby improving sorting reliability and yield.

[0018] 2. This invention combines the above-mentioned screening structure with a vibration transmission driven by a vibrating base. The vibrating base generates controlled frequency and amplitude vibrations on the screening panel, causing the microribs to generate controllable relative displacement on the screen surface and fall in an orderly manner under the action of the guide arc plate and the screen hole. At the same time, by setting the inlet guide plate and the outlet guide plate at the inlet and outlet ends of the screening panel respectively, and setting the outlet at the lowest point of the discharge funnel, the precise guidance and collection of the discharge path are achieved.

[0019] 3. The tilt angle and discharge angle of the screening panel can be quickly adjusted through the connecting plate and the discharge angle adjustment hole to adapt to microribs of different lengths, rigidities or surface characteristics; anti-discharge flanges are set around the perimeter of the screening plate and fixed by the connecting plate, and the sorter is installed on the sorter bracket through the connecting plate. The material frame is arranged below the bracket to achieve reliable docking with the collection device, reduce material loss and secondary scattering. Combined with the carbon fiber pre-impregnated short-cut microrib cutting device, the generation of microribs can be automated. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the carbon fiber prepreg chopped microrib sorting machine in this invention; Figure 2 This is a three-dimensional structural schematic diagram of the carbon fiber prepreg chopped microrib sorting machine of the present invention; Figure 3 This is a schematic diagram of the structure of the screening panel in this invention; Figure 4 for Figure 3 An enlarged schematic diagram of part A in the middle; Figure 5 This is a schematic diagram showing the usage state of the carbon fiber prepreg chopped microrib sorting machine in this invention; Figure 6 This is a schematic diagram of the overall structure of the carbon fiber prepreg chopped microrib production line in this invention; Figure 7 This is a schematic diagram of the overall structure of the cutting component in this invention; Figure 8 This is a schematic diagram of the specific structure of the guide partition in this invention; Figure 9 This is a schematic diagram of the overall structure of the rotary support assembly in this invention; Figure 10 This is a schematic diagram of the main structure of the micro-rib cutting mechanism for continuous multi-basalt structures in this invention. Detailed Implementation

[0021] To enhance understanding of the present invention, we will now describe it in further detail with reference to the accompanying drawings. These embodiments are for illustrative purposes only and do not constitute a limitation on the scope of protection of the present invention.

[0022] Example 1 The carbon fiber prepreg chopped microrib sorting machine of this embodiment includes: a screening panel and a vibrating base 80 for driving the screening panel to vibrate. The screening panel is arranged from top to bottom with guide arc plates 82, a screening plate 81, and a discharge funnel 83; several guide arc plates 82 are evenly spaced on the screening plate 81. A gap 811 is formed between two adjacent screening plates 81 to allow the microribs to pass through, and several screening holes 810 penetrating the screening plate 81 are provided below the gap 811. The length of the screening holes 810 is designed to be slightly larger than the length of the microribs to be sorted.

[0023] Preferably, the guide arc plate 82 has an arc-shaped cross-section with a geometry that is narrower at the top and wider at the bottom. This allows the micro-ribs entering the guide area to generate a horizontal displacement force when they come into contact with the arc surface, thereby guiding the micro-ribs and causing them to flip and fall into the gap 811 below. More preferably, the guide arc plate 82 can adopt a thin-walled structure with a central hole to reduce the weight of the component and decrease inertia. At the same time, it reduces the contact area with the brittle micro-ribs on the arc surface, thereby reducing wear and damage.

[0024] Preferably, the microrib length is 7mm, and the screen hole length can be approximately 7.5–9.0mm. That is, length = microrib length + 0.5–2.0mm, to ensure that the microrib can pass smoothly through the screen hole without getting stuck after entering it in any orientation; its width or minimum diameter should be slightly larger than the maximum outer diameter of the microrib. For example, for a Φ2mm microrib, the hole width can be 2.1–3.0mm, or a narrow and elongated hole can be used for orientation adaptation. The edges of the screen hole should be chamfered or rounded to prevent sharp edges from cutting the microrib.

[0025] Preferably, the screen plate 81 and the guide arc plate 82 can be fixed to the screen panel frame by bolts or clips, which facilitates the replacement of different hole types or cleaning. A transition surface is provided between the discharge funnel 83 and the screen plate 81 to prevent the microribs from falling out of the predetermined gap during vibration.

[0026] Example 2 Based on Embodiment 1, the following structure is added and implemented: a feeding guide plate 841 is provided at the feeding end of the screening panel, and a discharge guide plate 842 is provided at the discharging end; a discharge outlet 831 is provided at the lower end of the discharge funnel 83, located at the lowest point of the funnel; the vibrating base 80 is connected to the screening panel through a connecting plate 801, and the connecting plate 801 is provided with a discharge angle adjustment hole 802 for adjusting the tilt angle of the screening panel. The discharge angle adjustment hole is an arc-shaped through hole, and the vibrating base 80 is connected to the connecting plate 801 through a lockable bolt passing through the discharge angle adjustment hole 802 to realize angle adjustment and locking.

[0027] More preferably, the guide arc plate 82 extends along the length of the screen plate 81; a certain height anti-drop flange is provided around the periphery of the screen plate 81, the connecting plate 801 is fixedly connected to the screening panel through the anti-drop flange, the vibration base 80 is set on the separator bracket 86 through the connecting plate 860, and a material frame 9 is provided below the separator bracket 86 for placing the short-cut ribs discharged from the discharge funnel 83.

[0028] Example 3 Based on Examples 1 and 2, this embodiment proposes a carbon fiber prepreg chopped microrib production line, including a carbon fiber prepreg chopped microrib cutting device and a carbon fiber prepreg chopped microrib sorting machine including the carbon fiber prepreg chopped microribs in Examples 1-2 above.

[0029] The carbon fiber prepreg short-cut microrib cutting device of this embodiment includes a conveying component, a cutting component, and a guiding mechanism 5. The conveying component consists of an upper roller support component 21 and a lower roller support component 22, which are arranged opposite each other to provide longitudinal support and stable propulsion for multiple microribs. The upper and lower rollers are coated with a material suitable for the friction coefficient of carbon fiber prepreg microribs and are axially aligned with the microrib guiding channel 50 formed by the guide grid 52 to ensure that each microrib is conveyed in a straight line along the channel under clamping and driving.

[0030] The guide mechanism 5 is arranged in front of the cutting area and consists of a guide partition 51 and several vertical guide grids 52 arranged evenly and at equal intervals. A narrow channel 50 is formed between adjacent guide grids 52, so that the micro-rib bundles entering the cutting area can complete the lateral division and precise positioning in advance.

[0031] The cutting assembly includes a fixed cutter assembly 11, a movable cutter assembly 12, and a cutting drive assembly 10 that drives the movable cutter assembly 12 to reciprocate up and down. The fixed cutter assembly 11 and the movable cutter assembly 12 are arranged opposite to each other. The movable cutter assembly 12 performs reciprocating shearing motion in the vertical direction under the drive of the cutting drive assembly 10 to complete the fixed-length cutting.

[0032] To enhance the motion accuracy of the moving cutter assembly 12, a linear guide rail 40 is provided in its motion direction. The moving cutter assembly 12 is connected to the linear guide rail 40 through the cutter guide block 121 to ensure linear guidance and blade positioning stability during the cutting process. The cutting drive assembly 10 includes a drive motor 101 and a rotary support assembly 102. The rotary support assembly 102 consists of an eccentric wheel base 1020 and an eccentric wheel 1021. The eccentricity of the eccentric wheel 1021 determines the fixed-moving blade opening and closing stroke, and the eccentric wheel 1021 is reliably connected to the cutter connecting seat 1023 through a fixing pin 1024, realizing the conversion of eccentric rotational motion into linear reciprocating motion of the moving cutter assembly 12. The drive motor 101 can be a servo motor to achieve electronic synchronous control of reciprocating frequency, stroke and conveying speed, improving cutting accuracy and fiber consistency.

[0033] To provide stable feeding, the device also includes a feeding clamping roller assembly 53 located at the front end of the conveying component. The feeding clamping roller assembly 53 consists of several pairs of adjustable rollers, which can adjust the clamping force according to the cross-sectional size of the feeding micro-rib bundle, and can be used with spring preload, manual screw or cylinder and other mechanisms to achieve pressure adjustment.

[0034] A feeding guide plate 61 is provided between the feeding clamping roller assembly 53 and the mounting base plate 3. Both sides of the guide plate 61 are provided with guide partitions 51 and cooperate with the guide grid 52 to form a continuous guide path, so as to further improve the stability and posture maintenance of the micro-ribs entering the cutting area.

[0035] The conveying and cutting components are fixed on the support base 1, and the key movement and tool areas are covered by the housing 13 to ensure safety. Viewing windows 14 are provided on both sides of the housing 13 to observe the feeding and cutting status, and indicator lights 15 are provided on the housing 13 for operating status and fault indication. In this embodiment, the mounting base 3 achieves unified installation and positioning of the upper roller support component 21, lower roller support component 22, linear guide rail 40, fixed cutter component 11, and moving cutter component 12, and allows for the setting of grooves or mounting holes for convenient maintenance. The combination of the eccentric wheel structure and high-response servo control not only achieves stable fixed-length shearing, but also utilizes eccentric inertia to amplify the instantaneous cutting force to reduce dependence on tool sharpness and lower the probability of pre-impregnated fiber breakage.

[0036] When the device is running, multiple pre-impregnated microribs are clamped by the feeding clamping roller assembly 53 and enter the guiding mechanism 5 to complete the sorting and positioning. They are then stably conveyed to the blade gap by the upper roller support assembly 21 and the lower roller support assembly 22. The cutting drive assembly 10 drives the moving cutter assembly 12 to complete high-speed reciprocating cutting relative to the fixed cutter assembly 11. The cut carbon fiber pre-impregnated short-cut microribs automatically fall off and enter the downstream sorting system, realizing continuous, stable, low-damage, and high-precision microrib cutting production.

[0037] The above specific embodiments are only for illustrating the technical concept and structural features of the present invention, and are intended to enable those skilled in the art to implement them. However, the above content does not limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit and essence of the present invention should fall within the scope of protection of the present invention.

Claims

1. A carbon fiber prepreg chopped microrib sorting machine, comprising a screening panel and a vibrating base (80) for driving the screening panel to vibrate, characterized in that, The screening panel is provided with a guide arc plate (82), a screening plate (81) and a discharge funnel (83) from top to bottom; a plurality of the guide arc plates (82) are evenly and equidistantly arranged on the screening plate (81); The guide arc plate (82) is wider at the bottom and narrower at the top near the screen plate (81); Between two adjacent screen plates (81), there is a gap (811) through which the micro-ribs can pass; below the gap (811), there are a plurality of screen holes (810) penetrating the screen plates (81); the length of the screen holes (810) is slightly greater than the length of the micro-ribs.

2. The carbon fiber prepreg chopped microrib sorting machine according to claim 1, characterized in that, The screen panel has a feed guide plate (841) at the feed end and a discharge guide plate (842) at the discharge end; the feed guide plate (841) is wider than the screen plate (81).

3. The carbon fiber prepreg chopped microrib sorting machine according to claim 1, characterized in that, The lower end of the discharge funnel (83) is provided with a discharge outlet (831), which is located at the lowest point of the discharge funnel (83).

4. The carbon fiber prepreg chopped microrib sorting machine according to claim 1, characterized in that, The vibration base (80) is connected to the screening panel via a connecting plate (801); the connecting plate (801) is provided with a material dropping angle adjustment hole (802) that can adjust the tilt angle of the screening panel.

5. The carbon fiber prepreg chopped microrib sorting machine according to claim 4, characterized in that, The material dropping angle adjustment hole (802) is an arc-shaped through hole; the vibration base (80) is connected to the connecting plate (801) by a lockable bolt passing through the material dropping angle adjustment hole (802).

6. The carbon fiber prepreg chopped microrib sorting machine according to claim 1, characterized in that, The guide arc plate (82) is arranged along the length direction of the screen plate (81).

7. The carbon fiber prepreg chopped microrib sorting machine according to claim 6, characterized in that, The guide arc plate (82) has a thin-walled structure with a central hole, and the cross-section of the guide arc plate (82) is arc-shaped.

8. The carbon fiber prepreg chopped microrib sorting machine according to claim 4, characterized in that, A certain height anti-drop flange is provided around the periphery of the screening plate (81), and the connecting plate (801) is fixedly connected to the screening panel through the anti-drop flange.

9. The carbon fiber prepreg chopped microrib sorting machine according to claim 8, characterized in that, The vibration base (80) is mounted on the sorting machine bracket (86) via a connecting plate (860). A material frame (9) is provided below the sorting machine bracket (86) for placing short-cut ribs discharged from the discharge funnel (83).

10. A production line for pre-impregnated carbon fiber chopped short reinforcing bars, characterized in that, It includes a carbon fiber prepreg chopped microrib cutting device and a carbon fiber prepreg chopped microrib sorting machine as described in any one of claims 1-9.

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