Insertion type inner yarn supporting frame vehicle device for carbon fiber precursor transportation

Abstract

The invention discloses a plug-in type inner yarn supporting unwheeling device for carbon fiber precursor transportation, and belongs to the technical field of carbon fiber production equipment. The device aims at solving the problems that an existing yarn frame vehicle is high in manual carrying strength, yarn shafts are prone to being damaged, efficiency is low, and original yarn barrels are prone to being deformed. The device comprises a creel vehicle body and rollers, and is characterized in that a plurality of groups of bearing units are arranged on the vehicle body. Each bearing unit is provided with a hollow semi-circular-arc-shaped cylinder capable of being inserted into an inner cavity of a raw silk cylinder, and the outer arc face of the hollow semi-circular-arc-shaped cylinder is attached to the inner wall of the raw silk cylinder so as to provide inner supporting and prevent deformation. A push rod controlled by an operating rod and a retaining block linked with the push rod are arranged in the cylinder, and automatic locking of the original wire cylinder is achieved through a retaining spring; a pulley block is arranged on the upper portion of the cylinder in the axial direction, and the precursor cylinder can be guided to slide in place through extremely small thrust. Labor-saving, rapid, damage-preventing and deformation-preventing automatic loading and transportation of the raw silk cylinder are achieved, and the high-speed production line takt is remarkably matched.

Description

Technical Field

[0001] This invention relates to the field of carbon fiber production equipment technology, specifically to a special wire frame vehicle device for transferring a spool of filament wound with filament during the production of carbon fiber precursor, and in particular to a semi-automatic transport device that uses an insert-type internal support structure to maintain the shape of the filament spool. Background Technology

[0002] As a high-performance material, carbon fiber precursor production is developing towards higher speeds and continuous processes. In dry-jet wet spinning, spinning speeds can reach 300-500 m / min, with short full-winding cycles for the yarn bobbin. Currently, the transfer of precursor yarn bobbins on the production line mainly relies on manual labor in conjunction with simple yarn carriers, which are typically trolleys with multiple externally supported hollow cylinders.

[0003] The existing technology has the following serious defects: (1) Extremely high labor intensity: The weight of a single-axis spool is about 10 kilograms, and the frequent manual lifting and handling makes workers very prone to fatigue.

[0004] (2) High risk of raw yarn damage: manual operation inevitably touches the end face of the yarn roll or causes the yarn roll to slip, resulting in damage to the valuable raw yarn and causing direct economic loss.

[0005] (3) Production efficiency bottleneck: The speed of manual loading and unloading cannot match the production rhythm of high-speed spinning, forming a process bottleneck.

[0006] (4) Potential for wire bobbin deformation: Traditional wire bobbin carriages use external support, with the wire bobbin supported only by the bottom arc or a few support points. During long-term storage or transportation, it is prone to plastic deformation due to uneven stress. When the deformed wire bobbin is loaded with wire in the subsequent carbonization process, it will have poor contact with the drive roller, which can easily lead to uneven tension, wire breakage, or even wire loading failure, causing a chain of losses.

[0007] Therefore, the industry urgently needs an automated transportation solution that can significantly reduce labor intensity, eliminate human-caused damage, improve transfer efficiency, and fundamentally prevent spool deformation. Summary of the Invention

[0008] The purpose of this invention is to provide an insert-type internal support frame vehicle device for transporting carbon fiber precursor, so as to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, the present invention provides the following technical solution: an insert-type internal support filament carrier device for transporting carbon fiber precursor, comprising a filament carrier body and rollers disposed at the bottom of the body. The wire frame vehicle is equipped with multiple support units for carrying carbon fiber filament bobbins; Each of the carrier units includes: A hollow semi-circular arc-shaped cylinder for insertion into the inner cavity of the original filament spool, wherein the outer arc-shaped surface of the semi-circular arc-shaped cylinder is configured to fit against the inner cylindrical surface of the original filament spool, for supporting the original filament spool from the inside. A push rod that is located inside the hollow semi-circular cylinder and can move horizontally along its axis; At least two anti-reverse blocks linked to the push rod, and a return spring that drives the anti-reverse blocks to extend toward the end face of the original yarn spool; An operating lever connected to the push rod for manually manipulating the push rod's movement, and a backstop spring for resetting the push rod.

[0010] Furthermore, the top of the anti-retraction block is a sloping or arc-shaped structure, which allows the end face of the original yarn bobbin to squeeze the sloping surface during insertion, forcing the anti-retraction block to retract. After the original yarn bobbin passes the anti-retraction block, the anti-retraction block automatically pops out under the action of the return spring to lock the original yarn bobbin.

[0011] Furthermore, the arc angle of the hollow semi-circular cylinder is greater than 120 degrees and less than 180 degrees.

[0012] Furthermore, it also includes a plurality of pulleys spaced apart along the axial direction of the hollow semi-circular arc cylinder on its upper part, for guiding and assisting the original filament spool to slide in, the rotation axis of the pulleys being perpendicular to the axis of the hollow semi-circular arc cylinder.

[0013] Furthermore, six or nine of the aforementioned load-bearing units are arranged side by side on the body of the wire frame vehicle.

[0014] Furthermore, each of the bearing units is also hinged to an openable cover plate at the entrance end of the hollow semi-circular arc cylinder.

[0015] Furthermore, a flexible or elastic pad is attached to the outer arc-shaped surface of the hollow semi-circular cylinder.

[0016] Compared with the prior art, the beneficial effects of the present invention are: By using an "insertion-supported" structure, the deformation problem caused by external support is completely solved by fully fitting the support tube from the inside. This provides the subsequent processes with a geometrically precise tube, ensuring the stable progress of the carbonization process.

[0017] The pulley system makes the heavy pushing action easy; the semi-automatic locking mechanism eliminates the need for additional locking operations, allowing a single person to quickly complete loading and unloading, perfectly matching the pace of high-speed production lines.

[0018] The operation process avoids human contact with the end face of the yarn roll, thus preventing damage to the raw yarn; reliable mechanical locking eliminates the risk of slippage during transportation; and the internal support structure also prevents the yarn roll from deforming during storage.

[0019] The device has a simple mechanical structure, low failure rate, and is easy to maintain. The number of bearing units can be flexibly configured according to production needs (such as 6-axis or 9-axis), and it has good prospects for promotion. Attached Figure Description

[0020] Figure 1 This is a front perspective view of the wire frame device of the present invention; Figure 2 This is a three-dimensional structural diagram of the rear of the wire frame device of the present invention; Figure 3 This is a schematic diagram of the structure of a single bearing unit in the open state according to the present invention; Figure 4 This is a schematic diagram of the structure of a single bearing unit in its contracted state according to the present invention; In the diagram: 1. Wire frame car body; 2. Roller; 3. Semi-circular cylinder; 301. Fixing plate; 4. Anti-reverse spring; 5. Anti-reverse block; 501. Guide slope; 6. Return spring; 7. Push rod; 701. Guide section; 8. Operating rod; 9. Raw wire spool. Detailed Implementation

[0021] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0022] Example 1, as Figures 1-4 As shown, one embodiment of the present invention provides an insert-type internal support wire frame vehicle device for transporting carbon fiber precursor. The wire frame vehicle body 1 is welded from sturdy profiles, and the bottom is equipped with universal rollers 2 with braking function, which facilitates flexible movement and positioning within the workshop. Nine (or six depending on actual needs) identical load-bearing units are installed on the wire frame vehicle body 1.

[0023] Please refer to this carefully. Figures 3-4 The detailed structure of a single support unit is shown. The main body of the support unit is a hollow semi-circular cylinder 3 made of bent steel plate, with an arc of approximately 150 degrees, an arc angle greater than 120 degrees and less than 180 degrees, and a length slightly less than the inner cavity depth of the standard raw wire spool 9. Its outer arc surface is machined with high precision to ensure a large-area uniform fit with the inner wall of the raw wire spool 9. In this embodiment, the semi-circular cylinder 3 is horizontally fixed to the wire frame vehicle body 1, with its opening facing downwards. For ease of understanding, the end fixedly connected to the wire frame vehicle body 1 is defined as the rear end, and the end inserted into the raw wire spool 9 is defined as the front end.

[0024] Inside the semi-circular cylinder 3, there is a push rod 7 that can slide along its axis. The tail of the push rod 7 extends to the outside of the wire frame car body 1 and is connected to a handle-like operating lever 8 (e.g., Figure 2As shown, one end of the operating lever 8 is rotatably connected to the wire frame car body 1, and the other end is slidably connected to the push rod 7. By pushing the operating lever 8 to rotate around the hinge point with the wire frame car body 1, the push rod 7 is pushed to extend and retract linearly. The push rod 7 is equipped with a retaining spring 4, which is a tension spring. One end of the retaining spring 4 is fixed to the fixing plate 301 at one end of the semi-circular cylinder 3, and the other end is fixed to the end of the push rod 7. Under normal conditions, the elastic force of the retaining spring 4 can keep the push rod 7 in the foremost position.

[0025] At the front of the push rod 7, it is linked to two anti-reverse blocks 5 via an inclined groove or linkage mechanism. A return spring 6 is installed on each anti-reverse block 5. When the push rod 7 is in the front position (i.e., the operating rod 8 is not pulled), the return spring 6 pushes the outer side of the anti-reverse block 5 to a locked position protruding from the inner surface of the semi-circular cylinder 3. In this embodiment, the two anti-reverse blocks 5 are symmetrically rotated on both radial sides of the semi-circular cylinder 3 via a pin. The return spring 6 is a torsion spring, sleeved on the pin, with one end fixed to the anti-reverse block 5 and the other end relatively fixed to the semi-circular cylinder 3. Under the elastic support of the return spring 6, the outer side of the anti-reverse block 5 extends to the outside of the semi-circular cylinder 3 for internal support and positioning of the original wire spool 9. The push rod 7 has a guide section 701 with a gradually increasing radius at one end near the anti-reverse block 5. When the guide section 701 abuts against the rear ends of the two anti-reverse blocks 5, it pushes the anti-reverse blocks 5 to rotate around the pin shaft, causing the two anti-reverse blocks 5 to contract towards the center of the semi-circular cylinder 3.

[0026] like Figure 3 As shown, in this embodiment, the top of the anti-reverse block 5 is machined with a guide slope 501, so that the insertion ends of the two anti-reverse blocks 5 are inclined towards the center of the semi-circular cylinder 3. When the anti-reverse block 5 is rotated to the limit position, the distance between the front ends of the two anti-reverse blocks 5 is less than the inner diameter of the original wire spool 9, which facilitates the insertion and installation of the original wire spool 9.

[0027] Loading process (semi-automatic mode): The operator aligns the inner cavity of the original yarn spool 9 with the front end of the hollow semi-circular cylinder 3 of the supporting unit, and then gently pushes the original yarn spool 9 horizontally forward. The end face of the original yarn spool 9 first contacts the guide slope 501 of the anti-reverse block 5. The continued pushing force is converted into a component force that compresses the return spring 6 of the anti-reverse block 5, thereby causing the anti-reverse block 5 to retract into the interior of the semi-circular cylinder 3. When the end face of the original yarn spool 9 completely passes the anti-reverse block 5, the anti-reverse block 5 pops out instantly under the strong action of the return spring 6, and is firmly locked into the inner wall of the original yarn spool 9, completing the automatic locking. This process is completed in one go without the need for the operation lever 8 to intervene.

[0028] Manual unlocking and unloading process: When it is necessary to remove the original wire spool 9, the operator pulls the operating lever 8. The operating lever 8 moves the push rod 7 backward, simultaneously stretching the anti-return spring 4. The guide section 701 of the push rod 7 forces the anti-return block 5 to overcome the elastic force of the return spring 6 and fully retract into the semi-circular cylinder 3. At this time, the original wire spool 9 is unlocked and can be easily pulled out from the semi-circular cylinder 3.

[0029] Transportation and protection: Once all the raw yarn spools 9 are loaded and locked, each spool 9 receives rigid support from within, maintaining its shape. It can be safely transported by pushing the yarn carrier body 1. A threaded cover (not shown) is installed at the entrance of each carrying unit, which is closed during transport intervals or storage to prevent dust from entering the raw yarn spool 9 or to prevent accidental collisions.

[0030] Example 2 is an optimization based on Example 1. Specifically, several small nylon pulleys (not shown in the figure) are installed at equal intervals along the axial direction on the outer wall of the semi-circular cylinder 3 via a bracket. Their axes are perpendicular to the cylindrical axis of the semi-circular cylinder 3, allowing for flexible rotation. The pulleys can also be configured as universal ball bearings. At the same time, a flexible or elastic pad is attached to the outer arc surface of the hollow semi-circular cylinder 3. Through the above structural design, the original filament bobbin 9 can be pushed more smoothly onto the outer side of the semi-circular cylinder 3, and hard friction damage between the inner wall of the original filament bobbin and the outer surface of the semi-circular cylinder can be avoided.

[0031] The above embodiments are merely preferred embodiments for illustrating the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions and improvements made by those skilled in the art, based on the principles of the present invention, to the type of operating lever, spring specifications, pulley layout, or cover plate design should all be included within the scope of protection of the present invention.

Claims

1. An insertion type inner supporting creel device for carbon fiber precursor transportation, comprising a creel body (1) and a plurality of rollers (2) arranged at the bottom of the creel body, characterized in that: a plurality of load units for loading carbon fiber precursor bobbin (9) are arranged on the creel body (1); each load unit comprises: a hollow semicircular arc cylinder (3) for inserting into the inner cavity of the precursor bobbin (9), the outer arc surface of the semicircular arc cylinder (3) is configured to fit the inner cylindrical surface of the precursor bobbin (9) for supporting the precursor bobbin (9) from the inside; a push rod (7) arranged inside the hollow semicircular arc cylinder (3) and movable horizontally along the axial direction thereof; at least two stop blocks (5) connected with the push rod (7), and a return spring (6) driving the stop blocks (5) to have a tendency to protrude towards the end face of the precursor bobbin (9); an operating lever (8) connected with the push rod (7) for manually operating the movement of the push rod (7), and a stop spring (4) for resetting the push rod (7).

2. The creel cart apparatus of claim 1, wherein, The top of the stop block (5) is a beveled or curved surface structure, so that during the insertion process, the end face of the precursor bobbin (9) can extrude the beveled surface to force the stop block (5) to retract, and after the precursor bobbin (9) passes the stop block (5), the stop block (5) automatically pops out under the action of the return spring (6) to lock the precursor bobbin (9).

3. The spooler apparatus of claim 1, wherein, The arc angle of the hollow semicircular arc cylinder (3) is greater than 120 degrees and less than 180 degrees.

4. The spooler apparatus of claim 1, wherein, Further comprising a plurality of pulleys arranged on the upper part of the hollow semicircular arc cylinder (3) and spaced along the axial direction thereof, for guiding and assisting the precursor bobbin (9) to slide in, the rotation axis of the pulley is perpendicular to the axis of the hollow semicircular arc cylinder (3).

5. The spoolie cart apparatus of claim 1, wherein, Six or nine load units are arranged side by side on the creel body (1).

6. The spoolie cart apparatus of claim 1, wherein, Each load unit is further detachably provided with a cover plate at the entrance end of the hollow semicircular arc cylinder (3).

7. The spoolie cart apparatus of claim 1, wherein, A flexible or elastic gasket is attached to the outer arc surface of the hollow semicircular arc cylinder (3).

Images