Interleaving paper recovery device and method suitable for full-automatic composite tape laying equipment

Abstract

The invention discloses a lining paper recycling device suitable for full-automatic composite material tape laying equipment. The lining paper recycling device comprises a quick discharging barrel mechanism and a rotating mechanism. The quick discharging barrel mechanism comprises a rotating shaft arranged at the output end of the rotating mechanism, a pneumatic piston telescopic tensioning mechanism and a tensioning O-shaped ring are sequentially arranged outwards with the rotating shaft as the center, a plurality of tensioning battens are arranged on the tensioning O-shaped ring in the circumferential direction, and the multiple tensioning battens surround with the rotating shaft as the center to form a rotating roller used for installing a barrel. The pneumatic piston telescopic tensioning mechanism is used for outwards jacking each tensioning batten in the direction perpendicular to the length direction of the rotating shaft so as to fix the charging barrel; and the slewing mechanism is used for providing driving force to drive the rotating shaft to rotate. The invention also provides a lining paper recovery method. The device provided by the invention effectively recovers the lining paper and ensures that the tension force is stable in the tape laying process.

Description

Technical Field

[0001] The present invention belongs to the technical field of high-end manufacturing equipment, and in particular relates to a backing paper recovery device and method suitable for fully automatic tape laying equipment for composite materials. Background Art

[0002] The rapid tightening function of the existing liner recovery device is achieved by using pneumatic tightening, which does not have mechanical synchronization performance. The tightening degree of each built-in airbag is inconsistent, resulting in large radial runout during the rotation process of the barrel and liner, which leads to unstable diameter detection value of the barrel diameter measuring mechanism, thereby affecting the tension of the belt during the overall laying process, thereby affecting the overall laying quality.

[0003] Automatic tape laying technology mainly adopts CNC laying equipment to realize continuous cutting and laying of composite material prepreg tapes through digitalization, automation and other technical means. Its main working process is to place the prepreg roll in the tape laying equipment, guide the tape out through the tape guide mechanism, and press it on the tooling or layup through the compaction system. Then the prepreg cutter system cuts the laid tape, and finally the liner recovery device recycles the tape.

[0004] Automatic tape laying technology belongs to the field of composite material automatic laying and forming technology. This mature manufacturing technology has been widely recognized in the aviation field and can serve as an important technical support for the smooth launch of domestic large aircraft. The automatic liner recovery mechanism is the core part of the automatic tape laying equipment and the most basic part of the laying process. It plays a vital role in the automatic tape laying and forming technology.

[0005] Patent document CN115583539A discloses a tow tension control device and method for laying composite material tows, including a tension control mechanism and a tension reduction mechanism, wherein the tension control mechanism is used to peel off the lining paper of the tow material roll and adjust the tow tension before transmitting it to the tension reduction mechanism for tension reduction processing; the floating roller reciprocates along the guide rail slider through an elastic element, the magnetic powder brake is used to control through analog input, and the position sensor is used to output the detected analog position signal of the floating roller on the guide rail slider to the controller; the drive motor drives the transmission shaft to drive the friction wheel to move, and the cylinder is used to drive the feed wheel mechanism to press or leave the friction wheel.

[0006] Patent document CN112078148A discloses an automatic placement device for composite materials applied to curved surfaces, including a feeding device for conveying dry fiber filaments and resin film, a hot pressing roller device for heating the resin film and making it form a semi-preg together with the dry fiber filaments, a tension and speed measuring device for measuring the tension and transmission speed of the semi-preg, a spraying device for spraying phenoxy powder, a clamping device for clamping the semi-preg and causing it to produce shear-torsion combined deformation, a cutting device for cutting the semi-preg, a winding device for recovering the backing paper, and a compacting device for compacting the semi-preg. Summary of the invention

[0007] The object of the present invention is to provide a liner paper recovery device and method suitable for a composite material fully automatic tape laying device, the device can effectively recover the liner paper and ensure the stability of the tensioning force during the tape laying process.

[0008] In order to achieve the first object of the present invention, the following technical scheme is provided: a backing paper recycling device suitable for a composite material fully automatic tape laying device, wherein the composite material fully automatic tape laying device is used for continuous cutting and laying of composite material prepreg tapes, wherein the composite material prepreg tapes include backing paper and composite materials attached to the backing paper, and the used backing paper is wound up by a barrel; The quick-discharging barrel mechanism comprises a rotating shaft arranged at the output end of the rotary mechanism, with the rotating shaft as the center and outwardly provided with a pneumatic piston telescopic tensioning mechanism and a tensioning O-ring in sequence, a plurality of tensioning strips are circumferentially arranged on the tensioning O-ring, and the plurality of tensioning strips surround the rotating shaft as the center to form a rotating roller for barrel installation, and the pneumatic piston telescopic tensioning mechanism is used to lift each tensioning strip outwardly in a vertical direction of the length of the rotating shaft to fix the barrel; The rotary mechanism is used to provide driving force to drive the rotating shaft to rotate.

[0009] The present invention provides a rotary shaft with a tensioning strip so that the barrel can be quickly fixed after being sleeved on the rotary shaft, thereby ensuring stability during subsequent winding of the liner paper.

[0010] Specifically, the pneumatic piston telescopic tensioning mechanism includes a piston telescopic center push rod coaxially arranged with the rotating shaft and a matching locking head, as well as a ball head top pin that pushes the tensioning slats to expand outward and an air pump that drives the ball head top pin to move. The other end of the ball head top pin passes through the tensioning O-ring and contacts the piston telescopic center push rod. The piston telescopic center push rod is provided with a tapered section and a straight section. The tapered section contacts the ball head top pin. The ball head top pin is also provided with a tensioning reset spring.

[0011] Specifically, the piston telescopic central push rod is equipped with a piston telescopic rod return spring for rapid retraction.

[0012] Specifically, the quick-discharging barrel mechanism further includes a mounting support frame used in conjunction with the end of the rotating roller, and the mounting support frame is used to tightly press the end of the barrel mounted on the rotating roller.

[0013] Specifically, the rotary mechanism includes a drive motor, a synchronous pulley assembly, a recovery drive assembly mounting bracket for fixing the quick-discharge barrel mechanism, and a control system for controlling the output power of the drive motor.

[0014] Specifically, the barrel liner diameter detection component includes a sensor for detecting the diameter of the liner after recovery and a control circuit. The control circuit adjusts the output power of the drive motor using the diameter of the liner after recovery transmitted by the sensor.

[0015] Specifically, the adjustment is based on the preset tension requirement when laying the composite material prepreg tape, and the output power of the driving motor is adjusted to ensure that the tangential vector force of the peripheral surface is consistent with the tension requirement when the liner paper is recovered.

[0016] Specifically, a limit block for preventing the barrel from sliding is provided on the side where the tensioning strip contacts the inner wall of the barrel.

[0017] In order to achieve the second object of the present invention, the following technical scheme is provided: a liner paper recovery method is implemented by the liner paper recovery device suitable for the composite material full-automatic tape laying equipment, comprising the following steps: sleeve a barrel on the rotating roller of the barrel quick-release structure, and axially fix the barrel by installing a support frame; After the space in the piston telescopic center push rod is sealed by the locking head, the air pump is started to drive the piston telescopic center push rod to move, and the ball head push pin gradually pushes the tensioning strip outward through the inclined surface of the tapered section to complete the fixing work of the barrel; The rotary mechanism drives the barrel quick-release structure to make a rotary motion, and the liner paper is recovered with constant tension; When the diameter of the liner paper after recovery is greater than the threshold value, the recovery of the liner paper is stopped, the cylinder and the rotary mechanism are closed, and the locking head is opened to remove the barrel with the liner paper rolled on it.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The task of quickly disassembling and assembling the barrel is achieved through a mechanical synchronous tightening method without the need for external auxiliary tools, thereby shortening the material change time during the equipment's working process and improving equipment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a backing paper recovery device applicable to a composite material fully automatic tape laying device provided in this embodiment; Figure 2 A schematic diagram of the structure of the rotary mechanism provided in this embodiment; Figure 3An exploded view of the quick-release barrel mechanism provided in this embodiment; In the figure, 1. recovery drive assembly; 2. rewinding mechanism; 3. pneumatic piston telescopic tensioning mechanism; 4. quick-release barrel mechanism; 5. limit block; 6. barrel liner diameter detection assembly; 7. mounting support frame; 11. drive motor; 12. synchronous pulley assembly; 13. recovery drive assembly mounting bracket; 21. rewinding drive shaft; 22. bearing assembly; 24. bearing outer spacer; 31. pneumatic rotary joint; 33. piston telescopic rod reset spring; 34. piston telescopic center push rod; 35. tensioning strip; 36. tensioning O-ring; 37. tensioning reset spring; 38. ball head pin; 39. locking head. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described 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, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] Since the rapid tightening function of the existing liner recovery device is completed by using pneumatic tightening, which does not have mechanical synchronization performance, the tightening degree of each built-in airbag is inconsistent, resulting in large radial runout during the rotation process of the barrel and the liner, which leads to unstable diameter detection value of the barrel diameter measuring mechanism, thereby affecting the tension of the material belt during the overall laying process, thereby affecting the overall laying quality.

[0022] Therefore, this embodiment provides a liner paper recovery device suitable for a fully automatic tape laying device for composite materials. The fully automatic tape laying device for composite materials is used for continuous cutting and laying of composite material prepreg tapes, and the composite material prepreg tapes include liner paper and composite materials attached to the liner paper, and the used liner paper is wound up by a material drum.

[0023] like Figure 1 As shown, the liner paper recycling device provided in this embodiment includes a recycling drive assembly 1, a rewinding mechanism 2 and a quick-discharging barrel mechanism 4.

[0024] like Figure 2As shown, the rotary mechanism 2 includes a drive motor 11 , a synchronous pulley assembly 12 , a recovery drive assembly mounting bracket 13 , and a barrel liner paper diameter detection assembly 6 for controlling the output power of the drive motor 11 .

[0025] The output end of the drive motor 11 is provided with a rewinding drive shaft 21, a bearing assembly 22, a bearing outer spacer 23 and a bearing inner spacer 24, and the rewinding drive shaft 21 forms a rotating pair with the synchronous pulley assembly 12, and the bearing inner spacer 24 and the bearing outer spacer 23 and the bearing assembly 22 are clearance-matched and constitute a rotating pair.

[0026] The barrel liner paper diameter detection component 6 includes a sensor for detecting the diameter of the liner paper after recovery and a control circuit. The control circuit adjusts the output power of the drive motor according to the diameter of the liner paper after recovery transmitted by the sensor. The specific adjustment is based on the preset tension requirement when laying the composite material prepreg tape, and adjusts the output power of the drive motor to ensure that the tangential vector force of the circumferential surface is consistent with the tension requirement when the liner paper is recovered.

[0027] The barrel is responsible for winding the liner backing during the tape laying process. The rotary mechanism is also equipped with a laser rangefinder sensor to measure the radius of the liner. The motor torque can be adjusted according to the radius of the liner roll to ensure that the tension of the entire prepreg is constantly controlled. The paper shaft motor is in torque mode: the output torque of the motor is used as the control quantity to control the performance and output torque of the motor. In torque mode, the motor can be controlled by controlling the phase relationship between voltage and current.

[0028] like Figure 3 As shown, the quick-discharge barrel mechanism 4 includes a rotating shaft arranged at the output end of the rotary mechanism, and a pneumatic piston telescopic tensioning mechanism 34 and a tensioning O-ring 36 are sequentially arranged outwardly with the rotating shaft as the center, and a plurality of tensioning strips 35 are circumferentially arranged on the tensioning O-ring 36. The plurality of tensioning strips 35 are surrounded by the rotating shaft as the center to form a rotating roller for barrel installation, and the pneumatic piston telescopic tensioning mechanism 34 is used to lift each tensioning strip 35 outward vertically in the length direction of the rotating shaft to fix the barrel.

[0029] The pneumatic piston telescopic tensioning mechanism 3 includes a piston telescopic center push rod 34 arranged coaxially with the rotating shaft and a matching locking head 39, as well as a ball head top pin 38 that pushes the tensioning strip 35 to expand outward and an air pump that drives the ball head top pin 38 to move. The other end of the ball head top pin 38 passes through the tensioning O-ring 36 and contacts the piston telescopic center push rod 34. The piston telescopic center push rod 34 is provided with a tapered section and a straight section, wherein the tapered section contacts the ball head top pin 38, and the ball head top pin 38 is also provided with a tensioning reset spring 37.

[0030] The tensioning O-rings 36 are provided in plurality, and the tensioning O-rings 36 are arranged at equal intervals along the axial direction of the piston telescopic central push rod 34 to ensure that the tensioning strips 35 are arranged stably.

[0031] In order to better achieve the efficiency of daily barrel replacement, the piston telescopic center push rod 34 is equipped with a piston telescopic rod reset spring 33 and a cylinder for pushing the piston telescopic center push rod 34 to move along the axial direction. The cylinder is connected to the piston telescopic rod reset spring 33 through a pneumatic rotary joint 31 and is sealed and fixed by a cylinder end cover.

[0032] The quick-discharging barrel mechanism 4 also includes a mounting support frame 7 used in conjunction with the end of the rotating roller. The mounting support frame 7 is used to tighten the end of the barrel mounted on the rotating roller, and a limit block 5 is provided on the side where the tensioning strip 35 contacts the inner wall of the barrel to prevent the barrel from sliding. The limit blocks 5 are composed of multiple blocks and are arranged at intervals along the circumference of the rotating roller.

[0033] This embodiment also provides a backing paper recycling method, which is implemented by the backing paper recycling device provided in the above embodiment, and specifically includes the following process: The barrel is sleeved on the rotating roller of the barrel quick-release structure, and the barrel is axially fixed by installing the support frame; after the space in the piston telescopic center push rod is sealed by the locking head, the air pump is started to move the piston telescopic center push rod, and the ball head push pin gradually pushes the tensioning strip outward through the inclined surface of the tapered section to complete the fixing of the barrel; the barrel quick-release structure is driven to rotate through the rotary mechanism to recycle the liner with a constant tension; when the diameter of the liner after recovery is greater than the threshold, the liner recovery is stopped, the cylinder and the rotary mechanism are closed, and the locking head is opened to remove the barrel with the liner rolled on it.

[0034] The device can realize functions such as rapid installation and positioning of the barrel, automatic synchronous tightening of the barrel, rapid disassembly of the barrel mechanism, rapid separation of the barrel and rewinding of the liner paper, and the completion of the above functions does not require the aid of external auxiliary tools, thereby shortening the material change time during the working process of the equipment and improving the equipment efficiency.

[0035] In addition, the terms "upper", "lower", "inner", "outer", "front", "rear" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Unless otherwise specifically stated, the relative steps, numerical expressions and values ​​of the components and steps described in these embodiments do not limit the scope of the present invention.

[0036] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. All equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

[0037] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A backing paper recycling device suitable for a composite material fully automatic tape laying equipment, wherein the composite material fully automatic tape laying equipment is used for continuous cutting and laying of composite material prepreg tapes, wherein the composite material prepreg tapes include backing paper and composite materials attached to the backing paper, and the used backing paper is wound up by a barrel, wherein: The liner paper recovery device comprises a quick-discharging barrel mechanism for installing the barrel and a rotary mechanism for driving the quick-discharging barrel mechanism to perform rotary motion; The quick-discharging barrel mechanism comprises a rotating shaft arranged at the output end of the rotary mechanism, with the rotating shaft as the center and outwardly provided with a pneumatic piston telescopic tensioning mechanism and a tensioning O-ring in sequence, a plurality of tensioning strips are circumferentially arranged on the tensioning O-ring, and the plurality of tensioning strips surround the rotating shaft as the center to form a rotating roller for barrel installation, and the pneumatic piston telescopic tensioning mechanism is used to lift each tensioning strip outwardly in a vertical direction of the length of the rotating shaft to fix the barrel; The rotary mechanism is used to provide driving force to drive the rotating shaft to rotate.

2. The liner paper recovery device suitable for composite material fully automatic tape laying equipment according to claim 1 is characterized in that: The pneumatic piston telescopic tensioning mechanism includes a piston telescopic center push rod coaxially arranged with the rotating shaft and a matching locking head, as well as a ball head top pin that pushes the tensioning strip to expand outward and an air pump that drives the ball head top pin to move. The other end of the ball head top pin passes through the tensioning O-ring and contacts the piston telescopic center push rod. The piston telescopic center push rod is provided with a tapered section and a straight section. The tapered section contacts the ball head top pin. The ball head top pin is also provided with a tensioning reset spring.

3. The liner paper recovery device suitable for composite material fully automatic tape laying equipment according to claim 2 is characterized in that: The piston telescopic central push rod is equipped with a piston telescopic rod reset spring for rapid retraction.

4. The backing paper recovery device suitable for composite material fully automatic tape laying equipment according to claim 1 is characterized in that: The quick-discharging barrel mechanism also includes a mounting support frame used in conjunction with the end of the rotating roller, and the mounting support frame is used to tightly press the end of the barrel mounted on the rotating roller.

5. The backing paper recovery device suitable for composite material fully automatic tape laying equipment according to claim 1 is characterized in that: The rotary mechanism includes a driving motor, a synchronous pulley assembly, a recovery driving assembly mounting bracket for fixing the quick-release barrel mechanism, and a barrel liner paper diameter detection assembly for controlling the output power of the driving motor.

6. The backing paper recovery device suitable for composite material fully automatic tape laying equipment according to claim 5 is characterized in that: The barrel liner diameter detection component includes a sensor for detecting the diameter of the liner after recovery and a control circuit. The control circuit adjusts the output power of the drive motor using the diameter of the liner after recovery transmitted back by the sensor.

7. The liner paper recovery device suitable for composite material fully automatic tape laying equipment according to claim 6 is characterized in that: The adjustment is based on the preset tension requirement when laying the composite material prepreg tape, and the output power of the driving motor is adjusted to ensure that the tangential vector force of the peripheral surface is consistent with the tension requirement when the liner paper is recovered.

8. The backing paper recovery device suitable for composite material fully automatic tape laying equipment according to claim 1 is characterized in that: A limiting block for preventing the barrel from sliding is arranged on the side where the tensioning strip contacts the inner wall of the barrel.

9. A method for recycling lining paper, characterized in that: The method is realized by the backing paper recovery device suitable for the composite material fully automatic tape laying equipment as claimed in any one of claims 1 to 8, comprising the following steps: The barrel is sleeved on the rotating roller of the barrel quick-release structure, and the barrel is axially fixed by installing the support frame; After the space in the piston telescopic center push rod is sealed by the locking head, the air pump is started to move the piston telescopic center push rod, and the ball head push pin gradually pushes the tensioning strip outward through the inclined surface of the tapered section to complete the fixing work of the barrel; The rotary mechanism drives the barrel quick-release structure to make a rotary motion, and the liner paper is recovered with constant tension; When the diameter of the liner paper after recovery is greater than the threshold value, the recovery of the liner paper is stopped, the cylinder and the rotary mechanism are closed, and the locking head is opened to remove the barrel with the liner paper rolled on it.

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