Weak-rigidity energetic grain belt winding forming grain strain detection system and working method thereof

Abstract

The invention belongs to the technical field of integrated additive manufacturing of a weak-rigidity energetic grain system, and relates to a strain detection system for a weak-rigidity energetic grain belt winding forming grain and a working method of the strain detection system. The system comprises a rack, a control system, a signal acquisition system and a fiber winding machine, a plurality of air expansion shafts are mounted on the rack, a driving system is mounted at one end of each air expansion shaft, and a weak-rigidity energetic grain is mounted on each air expansion shaft; a plurality of pressure sensors are mounted between the inner wall of the weak-rigidity energetic grain and the inflatable shaft, and the pressure sensors are connected with a signal acquisition system; the control system controls the fiber winding machine and the driving system to move. The periodic variable load pressure borne by the weak-rigidity energetic grain is collected through the signal collecting system, and when the periodic variable load pressure is higher than the preset pressure, the linear motion type speed of the fiber winding machine and the rotating speed of the driving system are reduced. Through strain detection of the sensor, timely intervention can be achieved, and the grain is prevented from being damaged.

Description

Technical Field

[0001] The present invention belongs to the technical field of integrated additive manufacturing of weak-rigidity energetic charge systems, and in particular relates to a weak-rigidity energetic charge tape winding forming charge strain detection system and a working method thereof. Background Art

[0002] In order to save time and production costs and realize the rapid moldless integrated manufacturing of weak-rigidity energetic charges, the existing weak-rigidity energetic charge production method proposes a method of winding energetic materials with charges, which directly realizes the manufacturing of continuous fiber shells on energetic charge bodies. In the process of fiber tape winding to form the energetic material charge shell, since the charge used is a non-completely solidified Newtonian body with poor rigidity, it will deform with the rotation of the main shaft, and a certain amount of internal stress may be distributed inside, which will eventually cause deformation of the charge during the integrated solidification molding process, and even damage to the charge in severe cases. At present, it is impossible to detect stress changes and provide early warning. Summary of the invention

[0003] The purpose of the present invention is to provide a weak-rigidity energetic-grain tape winding-forming grain strain detection system and a working method thereof, which solves the problem that stress changes caused by the rapid rotation of the main shaft on the non-completely solidified grain during the grain winding process cannot be monitored and detected.

[0004] The present invention is achieved through the following technical solutions: A weak-rigidity energetic charge belt winding forming charge strain detection system, comprising a frame, a control system, a signal acquisition system and a filament winding machine; A plurality of inflatable shafts are installed on the frame, a driving system is installed at one end of each inflatable shaft, and a weak-rigidity energetic charge column is installed on each inflatable shaft; A number of pressure sensors are installed between the inner wall of the weak-rigidity energetic charge and the gas-expanding shaft, and the pressure sensors are connected to a signal acquisition system; The control system is connected to both the filament winding machine and the driving system, and is used for controlling the movement of the filament winding machine and the driving system.

[0005] Furthermore, a slip ring is installed at the end of each inflatable shaft. The slip ring includes a slip ring stator and a slip ring rotor. The slip ring rotor is sleeved on the outside of the inflatable shaft, and the slip ring stator is sleeved on the outside of the slip ring rotor.

[0006] Furthermore, the signal line of the pressure sensor is connected to the slip ring rotor, the slip ring rotor is in sliding contact with the slip ring stator, and the slip ring stator is connected to the signal acquisition system.

[0007] Furthermore, a fixed base and a connecting plate vertically connected to the fixed base are provided on the frame, and the slip ring stator is connected to the fixed base via the connecting plate.

[0008] Furthermore, two support seats are arranged on the frame, the pneumatic shaft runs through the two support seats, and the driving system is arranged on the outside of one of the support seats.

[0009] Furthermore, a plurality of inflatable shafts are arranged in parallel.

[0010] Furthermore, the driving system adopts a servo motor.

[0011] Furthermore, the rotation speed of the weak-rigidity energetic charge column has a logical relationship with the linear motion of the filament winding machine; the expression is: V = W × R; Wherein, W represents the rotation speed of the weak-rigidity energetic charge column, i.e., the rotation speed of the servo motor; V represents the linear speed of the filament winding machine; and R represents the rotation radius.

[0012] The present invention also discloses a working method of the weak-rigidity energetic charge tape winding forming charge strain detection system, comprising the following steps: The control system controls the filament winding machine and the driving system to move according to the instructions, and the driving system drives the inflatable shaft to rotate, thereby driving the weak-rigidity energetic charge column fixed on the inflatable shaft to rotate; The weak-rigidity energetic charge and the fiber strip extended from the fiber winding machine jointly complete the fiber winding forming of the weak-rigidity energetic charge shell according to the instructions of the control system. While rotating, the weak-rigidity energetic charge will generate periodic variable load pressure on the pressure sensor in contact with it, and the pressure sensor transmits the pressure data to the signal acquisition system for processing and storage; if the periodic variable load pressure is higher than the preset pressure, the control system controls the fiber winding machine and the drive system to decelerate.

[0013] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention discloses a strain detection system for a weak-rigidity energetic charge with a wound-forming charge. A plurality of pressure sensors are installed between the inner wall of the weak-rigidity energetic charge and the inflatable shaft, and the pressure sensors are connected to a signal acquisition system. The signal acquisition system can collect the periodic variable load pressure to which the weak-rigidity energetic charge is subjected, and the quality of the energetic material charge produced by the wound-forming process can be analyzed and processed by the collected pressure data. If the periodic variable load pressure is higher than the preset pressure, the linear motion speed of the fiber winding machine and the speed of the driving system need to be reduced. The present invention can achieve timely intervention and avoid damage to the charge through strain detection by the sensor.

[0014] Furthermore, the inflatable shaft rotates during the winding process. The pressure sensor is installed at the relevant part of the inflatable shaft to detect the pressure. If the signal line is directly led out, the cable will be entangled when the inflatable shaft rotates, resulting in the inability to transmit the signal normally or even damage the line. The slip ring cooperates with the slip ring rotor and the slip ring stator through sliding contact, so that no matter what rotation state the inflatable shaft is in, the signal line of the pressure sensor can first be stably connected with the slip ring rotor, and the relative sliding of the rotor and the stator can transmit the signal to the stator, and then the stator smoothly transmits the signal to the static signal acquisition system, ensuring continuous and reliable signal transmission between the rotating parts and the static parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a stress detection system for weak-rigidity energetic charge winding molding of the present invention; Figure 2 The position diagram of the inflatable shaft, weak-rigidity energetic charge and pressure sensor of the present invention; Among them, 1. weak-rigidity energetic charge; 2. fiber winding machine; 3. inflatable shaft; 4. pressure sensor; 5. drive system; 6. slip ring; 6-1. slip ring rotor; 6-2. slip ring stator; 7. signal acquisition system; 8. control system; 9. fiber strip; 10. connecting plate; 11. fixed base; 12. support base. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the present invention more clear, the following is further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, not all embodiments.

[0017] The components described and shown in the drawings and embodiments of the present invention may be arranged and designed in various configurations. Therefore, the detailed description of the embodiments of the present invention provided in the following drawings is not intended to limit the scope of the claimed invention, but merely represents a selected embodiment of the present invention. Based on the drawings and embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0018] It should be noted that the terms "comprises", "includes" or any other variations are intended to cover non-exclusive inclusion, so that a process, element, method, article or equipment that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to the process, element, method, article or equipment.

[0019] The features and performances of the present invention are further described in detail below in conjunction with the embodiments.

[0020] like Figure 1 As shown, the present invention discloses a strain detection system for a weak-rigidity energetic charge tape winding forming charge, comprising a control system 8, a signal acquisition system 7, a filament winding machine 2 and a frame; a plurality of inflatable shafts 3 are mounted on the frame, a driving system 5 is correspondingly mounted at one end of each inflatable shaft 3, and a weak-rigidity energetic charge 1 is mounted on each inflatable shaft 3; Figure 2 As shown, a plurality of pressure sensors 4 are installed on the outer wall of the middle section of the inflatable shaft 3, the weak-rigidity energetic charge 1 is wrapped around the middle section of the inflatable shaft 3, the pressure sensor 4 is connected to the signal acquisition system 7; the control system 8 is connected to both the filament winding machine 2 and the drive system 5.

[0021] The inflatable shaft 3 is servo-driven by the driving system 5 to rotate at high speed. The weak-rigidity energetic charge 1 rotates at high speed and moves logically together with the fiber winding machine 2 according to the instructions of the control system 8, and the extended fiber strip 9 is wound and formed on the surface of the weak-rigidity energetic charge 1 to form a fiber shell of the weak-rigidity energetic charge 1.

[0022] The above-mentioned rated height generally refers to higher than 100r / min.

[0023] Generally, the driving system 5 generally adopts a servo motor, and multiple inflatable shafts 3 are arranged in parallel.

[0024] The rotation speed of the weak-rigidity energetic charge 1 and the linear motion of the filament winding machine 2 have a certain logical relationship; the expression is: V = W × R; Wherein, W represents the rotation speed of the weak-rigidity energetic charge 1, that is, the rotation speed of the servo motor, in rad / s; V represents the linear speed of the filament winding machine 2, in m / s; and R represents the rotation radius, in mm.

[0025] Preferably, a slip ring 6 is also installed on the driving end of the inflatable shaft 3. The slip ring 6 includes a slip ring stator 6-2 and a slip ring rotor 6-1. The slip ring rotor 6-1 is connected to the outer cylindrical surface of the high-speed rotating inflatable shaft 3. The slip ring stator 6-2 and the slip ring rotor 6-1 can continuously detect and transmit the deformation pressure data of the weak-rigidity energetic charge 1 formed by the centrifugal force during the molding process to the signal acquisition system 7, which is helpful for the later analysis and processing of the quality of the energetic material charge produced by the drug winding molding.

[0026] Specifically, the signal line of the pressure sensor 4 is connected to the slip ring rotor 6 - 1 , the slip ring rotor 6 - 1 is in sliding contact with the slip ring stator 6 - 2 , and the slip ring stator 6 - 2 is connected to the external acquisition device.

[0027] The slip ring 6 itself is a device that can realize the transmission of electrical signals or data between two relatively rotating parts, and it is composed of a slip ring stator 6-2 (relatively stationary part) and a slip ring rotor 6-1 (part that rotates with the rotating part). In the process of energetic charge forming, if a rotating process is involved, such as the charge is formed in a rotating device, the rotor part can move synchronously with the rotating part, and the stator is fixed on the static structure of the device. In this way, the problem of data transmission between the rotating body and the static body is cleverly solved, so that the deformation pressure data generated by the charge during rotation can be transmitted from the dynamic environment to the external environment where the static signal acquisition system 7 is located.

[0028] Generally, the signal acquisition system 7 adopts a data acquisition device.

[0029] like Figure 2 As shown, a fixed base 11 and a connecting plate 10 vertically connected to the fixed base 11 are provided on the frame, and the slip ring stator 6 - 2 is connected to the fixed base 11 through the connecting plate 10 .

[0030] like Figure 1 As shown, two support seats 12 are arranged on the frame, the inflatable shaft 3 runs through the two support seats 12, and the driving system 5 is arranged on the outside of one of the support seats 12 and connected to the inflatable shaft 3.

[0031] The specific working method is as follows: the control system 8 sends the predetermined instruction data, controls the fiber winding machine 2 and the driving system 5 to perform the corresponding instruction movement according to certain instructions, and the driving system 5 drives the inflatable shaft 3 fixed thereon to make the weak-rigidity energetic charge 1 fixed thereon rotate at the same time, and the high-speed rotating weak-rigidity energetic charge 1 and the fiber strip 9 extended by the fiber winding machine 2 jointly complete the fiber winding molding of the weak-rigidity energetic charge 1 shell according to the instructions of the control system 8. The weak-rigidity energetic charge 1 will generate periodic variable load pressure on the pressure sensor 4 in contact with it while rotating at high speed. The pressure sensor 4 transmits the pressure data to the signal acquisition system 7 through the slip ring rotor 6-1 and then through the slip ring stator 6-2 for processing and storage. For example, when the periodic variable load pressure is higher than 20Mpa, it is necessary to slow down.

[0032] The present invention installs multiple pressure sensors 4 between the inner wall of the weak-rigidity energetic charge 1 and the inflatable shaft 3, and connects them to the signal acquisition system 7, so as to obtain the periodic variable load pressure data of the charge in the process of tape winding in real time. This is like equipping the production process with eyes, constantly monitoring the stress state inside the charge, and accurately grasping the stress changes of the charge during each circle and each layer of fiber winding, which helps to timely discover potential quality problems and ensure that the quality of the produced charge meets high standards.

[0033] By analyzing and processing the collected pressure data, it is possible to accurately determine whether the grain column has excessive pressure during the winding process. The pressure on the grain column will be different from the normal state, which is reflected in the change of the value or fluctuation pattern in the pressure data, so as to facilitate the timely adjustment of process parameters during the production process, avoid the final production of unqualified energetic grain products, and improve the overall product qualification rate.

[0034] When it is detected that the periodic variable load pressure is higher than the preset pressure, the system can prompt to reduce the linear motion speed of the fiber winding machine 2 and the rotation speed of the drive system 5 in time. This mechanism realizes the dynamic optimization of production process parameters. For example, during the production process, if the pressure on the drug column is too large in a certain period of time, the speed and rotation speed are automatically adjusted according to the preset rules, which can make the subsequent fiber winding process more stable and uniform, and make the drug column force return to a reasonable range, ensuring the structural integrity and performance stability of the drug column from the inside to the outside, so that the entire production process continues to approach the optimal state, improving production efficiency while ensuring product quality.

[0035] There may be differences in raw material characteristics, grain size specifications and other factors in different batches, which will affect the pressure of the grain during winding. With the help of the strain detection system, no matter what changes are encountered, the process parameters can be flexibly adjusted according to the actual collected pressure data, so that the production process can adapt well to various changes in conditions, ensuring that the energetic grains produced under different conditions can meet the quality requirements, and enhancing the versatility and adaptability of the production process.

[0036] Energetic grains are inherently dangerous. If the internal structure is damaged or stress is concentrated due to unreasonable force during the winding process, serious safety accidents may occur during subsequent storage, transportation, and even use. By monitoring the pressure in real time and adjusting the parameters in a timely manner, it is possible to effectively avoid safety hazards such as excessive force on the grain during the production process, ensure the intact structure and stable performance of the grain, reduce safety risks from the source, and ensure the safety of application scenarios related to energetic grains (such as weapon launches, aerospace propulsion, etc.).

[0037] Accurately controlling the stress of the grain during the winding process helps ensure the final performance of the grain. For example, the energetic material inside the grain is evenly distributed and the structure is stable, so that in actual use, the energy can be released stably as expected, avoiding abnormal energy release due to quality problems in the production process, ensuring that the energetic grain can play a reliable role in the corresponding equipment system, and improving the safety and reliability of the entire system.

[0038] In summary, this strain detection system plays an important and positive role in quality control, process optimization and safety assurance of the winding molding of weak-rigidity energetic charge tapes.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A weak-rigidity energetic charge tape winding forming charge strain detection system, characterized in that: It comprises a frame, a control system (8), a signal acquisition system (7) and a fiber winding machine (2); A plurality of inflatable shafts (3) are mounted on the frame, a driving system (5) is mounted on one end of each inflatable shaft (3), and a weak-rigidity energetic charge column (1) is mounted on each inflatable shaft (3); A plurality of pressure sensors (4) are installed between the inner wall of the weak-rigidity energetic charge column (1) and the inflation shaft (3), and the pressure sensors (4) are connected to a signal acquisition system (7); The control system (8) is connected to both the filament winding machine (2) and the drive system (5), and is used to control the movement of the filament winding machine (2) and the drive system (5).

2. A weak-rigidity energetic charge tape winding forming charge strain detection system according to claim 1, characterized in that: A slip ring (6) is also installed at the end of each air shaft (3), the slip ring (6) comprising a slip ring stator (6-2) and a slip ring rotor (6-1), the slip ring rotor (6-1) being sleeved on the outside of the air shaft (3), and the slip ring stator (6-2) being sleeved on the outside of the slip ring rotor (6-1).

3. A weak-rigidity energetic charge tape winding forming charge strain detection system according to claim 2, characterized in that: A signal line of the pressure sensor (4) is connected to the slip ring rotor (6-1), the slip ring rotor (6-1) is in sliding contact with the slip ring stator (6-2), and the slip ring stator (6-2) is connected to the signal acquisition system (7).

4. A weak-rigidity energetic charge tape winding forming charge strain detection system according to claim 2, characterized in that: A fixed base (11) and a connecting plate (10) vertically connected to the fixed base (11) are provided on the frame, and the slip ring stator (6-2) is connected to the fixed base (11) via the connecting plate (10).

5. A weak-rigidity energetic charge tape winding forming charge strain detection system according to claim 1, characterized in that: Two support seats (12) are arranged on the frame, the pneumatic shaft (3) passes through the two support seats (12), and the drive system (5) is arranged on the outside of one of the support seats (12).

6. A weak-rigidity energetic charge tape winding forming charge strain detection system according to claim 1, characterized in that: A plurality of inflatable shafts (3) are arranged in parallel.

7. A weak-rigidity energetic charge tape winding forming charge strain detection system according to claim 1, characterized in that: The driving system (5) adopts a servo motor.

8. The strain detection system for weak-rigidity energetic charge tape winding forming charge according to claim 1 is characterized in that: The rotation speed of the weak-rigidity energetic charge (1) has a logical relationship with the linear motion of the filament winding machine (2); the expression is: V = W × R; Wherein, W represents the rotation speed of the weak-rigidity energetic charge column (1), i.e., the rotation speed of the servo motor; V represents the linear speed of the filament winding machine (2); and R represents the rotation radius.

9. The working method of the strain detection system for the weak-rigidity energetic charge tape winding forming charge according to any one of claims 1 to 8 is characterized in that: The following steps are involved: The control system (8) controls the filament winding machine (2) and the driving system (5) to move according to the instructions, and the driving system (5) drives the inflatable shaft (3) to rotate, thereby driving the weak-rigidity energetic charge column (1) fixed on the inflatable shaft (3) to rotate; The weak-rigidity energetic charge (1) and the fiber strip (9) extended from the fiber winding machine (2) together complete the fiber winding molding of the shell of the weak-rigidity energetic charge (1) according to the instructions of the control system (8). The weak-rigidity energetic charge (1) generates periodic variable load pressure on the pressure sensor (4) in contact with it while rotating. The pressure sensor (4) transmits the pressure data to the signal acquisition system (7) for processing and storage. If the periodic variable load pressure is higher than the preset pressure, the control system (8) controls the fiber winding machine (2) and the drive system (5) to decelerate.

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