Chemical fiber paper tube strength test method

Abstract

The present invention discloses a method for testing the strength of a chemical fiber paper tube. The chemical fiber paper tube strength testing device includes a bracket, a lifting base, a fixed tension rod, a movable tension rod, and a pull rope. The fixed tension rod is connected to one end of the pull rope, and a fixed tension sensor is installed on the fixed tension rod; the lifting base is driven to rise and fall by a lifting drive mechanism; a turntable is provided above the lifting base, and the turntable is driven to rotate by a rotary motor. One side of the turntable is fixedly connected to a vertical mounting rod, the movable tension rod is fixedly connected to the lower end of the vertical mounting rod, the other end of the pull rope is connected to the movable tension rod, and a movable tension sensor is installed on the movable tension rod. The turntable is driven to move by the tension mechanism. The chemical fiber paper tube strength testing method of the present invention can quickly perform strength testing on chemical fiber paper tubes. The strength testing process simulates the silk thread winding process, making the strength testing of chemical fiber paper tubes more reliable and the test data more accurate.

Description

Technical Field

[0001] The present invention belongs to the technical field of chemical fiber paper tube production, and particularly relates to a method for detecting the strength of chemical fiber paper tubes. Background Art

[0002] Chemical fiber paper tubes are used to wrap chemical fiber yarns during the spinning process. A certain amount of thread needs to be wound around the tubes, which require manual tension during the spinning process, and the tubes sometimes need to rotate continuously. They are also subject to certain compressive forces during storage and transportation. Therefore, chemical fiber paper tubes must possess a certain strength to meet the requirements of their use. Existing chemical fiber paper tubes are all made of paper, which offers advantages such as low cost and recyclability. After chemical fiber paper tubes are produced, their strength needs to be tested. Existing strength testing generally involves random sampling, where selected chemical fiber paper tubes are subjected to destructive strength tests using a press to obtain strength data. This testing method cannot be applied to every chemical fiber paper tube that leaves the factory, and the press testing process differs from the actual stress on the chemical fiber paper tube, resulting in inaccurate strength data. Therefore, it is necessary to design a specialized strength testing method tailored to the characteristics of chemical fiber paper tubes. Summary of the Invention

[0003] In order to solve the above technical problems, the technical solution adopted by the present invention is: a chemical fiber paper tube strength detection method, using a chemical fiber paper tube strength detection device for detection, the chemical fiber paper tube strength detection device includes a bracket, a lifting base, a fixed tension rod, a movable tension rod, and a pull rope.

[0004] The fixed tension rod is fixedly mounted on the bracket, the fixed tension rod is connected to one end of the pull rope, and a fixed tension sensor for measuring the tension of the pull rope is installed on the fixed tension rod;

[0005] The lifting base is driven to move up and down by a lifting drive mechanism, and the lifting drive mechanism is installed on the bracket;

[0006] A turntable is provided above the lifting base, and the turntable is driven to rotate by a rotating motor. A vertical mounting rod is fixedly connected to one side of the turntable, and a movable pull rod is fixedly connected to the lower end of the vertical mounting rod. The fixed tension rod and the movable pull rod are respectively perpendicular to the central axis of the turntable. The fixed tension rod and the movable pull rod are equal or similar in height. The other end of the pull rope is connected to the movable pull rod, and an active tension sensor for measuring the tension of the pull rope is installed on the movable pull rod. The turntable is driven to move by the tension mechanism;

[0007] The detection method includes: placing the chemical fiber paper tube on a lifting base, driving the turntable to rotate through a rotating motor, so that the pull rope is wrapped around the chemical fiber paper tube 1-3 times, and then the tension mechanism drives the turntable to move, driving the movable pull rod to move, and tightening the pull rope; when the tension data sensed by the movable tension sensor and the tension data sensed by the fixed tension sensor reach the set value, the tension mechanism stops driving the turntable to move, and after maintaining for a period of time, the tension mechanism drives the turntable to move in the opposite direction, so that the pull rope loosens the chemical fiber paper tube, observes the deformation of the chemical fiber paper tube, and determines whether the strength of the chemical fiber paper tube meets the design requirements; when performing the ultimate strength test, the tension mechanism continues to drive the turntable to move until the chemical fiber paper tube is squeezed and deformed by the pull rope, and the ultimate strength of the chemical fiber paper tube is obtained through the data of the movable tension sensor and the fixed tension sensor.

[0008] As a preferred embodiment of the above technical solution, a conical limiting platform is provided on the lifting base, and the lower end of the chemical fiber paper tube is sleeved on the conical limiting platform.

[0009] As a preferred embodiment of the above technical solution, the bracket is provided with a translation slide rail, the translation slide rail is provided with a plurality of sliders, the rotary motor is fixedly mounted on the movable plate, and the sliders are respectively fixedly connected to the movable plate.

[0010] As a preferred embodiment of the above technical solution, an annular groove is provided on the movable plate, and the annular groove is coaxially arranged with the turntable. The upper end of the vertical mounting rod extends into the annular groove and is mounted in the annular groove through a bearing.

[0011] As a preferred embodiment of the above technical solution, a communication slip ring is installed in the annular groove, and the movable tension sensor transmits signals through the communication slip ring.

[0012] As a preferred embodiment of the above technical solution, the pulling mechanism includes a cylinder, which is fixedly mounted on the bracket, and a working shaft of the cylinder is fixedly connected to the movable plate.

[0013] As a preferred embodiment of the above technical solution, the lifting drive mechanism includes a screw rod and a drive motor. The screw rod is rotatably installed on the bracket. The drive motor drives the screw rod to rotate. A screw rod pair is installed on the screw rod. The screw rod pair is fixedly connected to the lifting base. Guide rods are respectively provided on both sides of the screw rod. The lifting base is provided with a guide hole for the guide rod to move through. The guide rod is fixedly installed on the bracket.

[0014] The beneficial effects of the present invention are: the chemical fiber paper tube strength detection method of the present invention can quickly realize the strength detection of the chemical fiber paper tube, the strength detection process simulates the silk thread winding process, the strength detection of the chemical fiber paper tube is more reliable, and the test data is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0016] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0017] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0019] like Figure 1 As shown, the strength detection method of chemical fiber paper tube is performed using a strength detection device for chemical fiber paper tube 11. The strength detection device for chemical fiber paper tube 11 includes a bracket 1, a lifting base 2, a fixed tension rod 3, a movable pull rod 4, and a pull rope 5.

[0020] The fixed tension rod 3 is fixedly mounted on the bracket 1, and the fixed tension rod 3 is connected to one end of the pull rope 5. A fixed tension sensor 6 for measuring the tension of the pull rope 5 is installed on the fixed tension rod 3;

[0021] The lifting base 2 is driven to rise and fall by a lifting drive mechanism, and the lifting drive mechanism is installed on the bracket 1;

[0022] A turntable 9 is provided above the lifting base 2, and the turntable 9 is driven to rotate by a rotating motor 7. A vertical mounting rod 10 is fixedly connected to one side of the turntable 9, and a movable pull rod 4 is fixedly connected to the lower end of the vertical mounting rod 10. The fixed tension rod 3 and the movable pull rod 4 are respectively perpendicular to the central axis of the turntable 9. The fixed tension rod 3 and the movable pull rod 4 are equal or similar in height. The other end of the pull rope 5 is connected to the movable pull rod 4. An active tension sensor 8 for measuring the tension of the pull rope 5 is installed on the movable pull rod 4. The turntable 9 is driven to move by the tension mechanism;

[0023] The detection method includes: placing a chemical fiber paper tube 11 on a lifting base 2, driving the turntable 9 to rotate by a rotating motor 7, so that the pull rope 5 is wrapped around the chemical fiber paper tube 11 1-3 times, and then the tension mechanism drives the turntable 9 to move, driving the movable pull rod 4 to move, and tightening the pull rope 5; when the tension data sensed by the movable tension sensor 8 and the tension data sensed by the fixed tension sensor 6 reach the set value, the tension mechanism stops driving the turntable 9 to move, and after maintaining for a period of time, the tension mechanism drives the turntable 9 to move in the opposite direction, so that the pull rope 5 loosens the chemical fiber paper tube 11, observes the deformation of the chemical fiber paper tube 11, and judges whether the strength of the chemical fiber paper tube 11 meets the design requirements; when performing the ultimate strength test, the tension mechanism continues to drive the turntable 9 to move until the chemical fiber paper tube 11 is squeezed and deformed by the pull rope 5, and the ultimate strength of the chemical fiber paper tube 11 is obtained through the data of the movable tension sensor 8 and the fixed tension sensor 6.

[0024] Furthermore, the lifting base 2 is provided with a conical stopper 12, onto which the lower end of the chemical fiber paper tube 11 is sleeved. An inverted conical stopper 12 can also be provided in the middle of the lower surface of the turntable 9. This stabilizes the chemical fiber paper tube 11 when it is tightened, preventing it from tipping over.

[0025] Furthermore, the bracket 1 is provided with a translation rail 13 , and the translation rail 13 is provided with a plurality of sliders 14 . The rotary motor 7 is fixedly mounted on a movable plate 15 , and the sliders 14 are fixedly connected to the movable plates 15 .

[0026] Furthermore, an annular groove 16 is provided on the movable plate 15, and the annular groove 16 is coaxially arranged with the turntable 9. The upper end of the vertical mounting rod 10 extends into the annular groove 16 and is mounted in the annular groove 16 via a bearing 17. In this way, when the movable plate 15 is driven to move by the tension mechanism, the tension can be directly transmitted to the movable pull rod 4 through the vertical mounting rod 10, thereby preventing the rotating motor 7 from receiving horizontal tension.

[0027] Furthermore, a communication slip ring is installed in the annular groove 16, and the movable tension sensor 8 transmits signals through the communication slip ring.

[0028] Furthermore, the pulling mechanism includes a cylinder 18 , which is fixedly mounted on the bracket 1 , and a working shaft of the cylinder 18 is fixedly connected to the movable plate 15 .

[0029] Furthermore, the lifting drive mechanism includes a screw rod 19 and a drive motor 21. The screw rod 19 is rotatably mounted on the bracket 1. The drive motor 21 drives the screw rod 19 to rotate. A screw rod pair is mounted on the screw rod 19. The screw rod pair is fixedly connected to the lifting base 2. Guide rods 20 are respectively provided on both sides of the screw rod 19. The lifting base 2 is provided with guide holes for the guide rods 20 to move through. The guide rods 20 are fixedly mounted on the bracket 1. By driving the lifting base 2 up and down through the lifting drive mechanism, strength tests can be performed on different parts of the chemical fiber paper tube 11.

[0030] It is worth mentioning that the technical features such as tension sensors, motors, cylinders, slip rings involved in the patent application of this invention should be regarded as prior art. The specific structure, working principle and possible control method and spatial layout of these technical features can be selected by conventional means in the field and should not be regarded as the inventive point of this patent. This patent will not be further elaborated.

[0031] The above describes in detail the preferred specific embodiments of the present invention. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solutions that can be obtained by technicians in this technical field through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of existing technologies should be within the scope of protection determined by the claims.

Claims

1. A method for testing the strength of chemical fiber paper tubes, characterized in that: The chemical fiber paper tube strength testing device is used for testing. The chemical fiber paper tube strength testing device includes a bracket, a lifting base, a fixed tension rod, a movable tension rod, and a pull rope. The fixed tension rod is fixedly mounted on the bracket, the fixed tension rod is connected to one end of the pull rope, and a fixed tension sensor for measuring the tension of the pull rope is installed on the fixed tension rod; The lifting base is driven to move up and down by a lifting drive mechanism, and the lifting drive mechanism is installed on the bracket; A turntable is provided above the lifting base, and the turntable is driven to rotate by a rotating motor. A vertical mounting rod is fixedly connected to one side of the turntable, and a movable pull rod is fixedly connected to the lower end of the vertical mounting rod. The fixed tension rod and the movable pull rod are respectively perpendicular to the central axis of the turntable. The fixed tension rod and the movable pull rod are equal or similar in height. The other end of the pull rope is connected to the movable pull rod, and an active tension sensor for measuring the tension of the pull rope is installed on the movable pull rod. The turntable is driven to move by the tension mechanism; The detection method includes: placing the chemical fiber paper tube on a lifting base, driving the turntable to rotate through a rotating motor, so that the pull rope is wrapped around the chemical fiber paper tube 1-3 times, and then the tension mechanism drives the turntable to move, driving the movable pull rod to move, and tightening the pull rope; when the tension data sensed by the movable tension sensor and the tension data sensed by the fixed tension sensor reach the set value, the tension mechanism stops driving the turntable to move, and after maintaining for a period of time, the tension mechanism drives the turntable to move in the opposite direction, so that the pull rope loosens the chemical fiber paper tube, observes the deformation of the chemical fiber paper tube, and determines whether the strength of the chemical fiber paper tube meets the design requirements; when performing the ultimate strength test, the tension mechanism continues to drive the turntable to move until the chemical fiber paper tube is squeezed and deformed by the pull rope, and the ultimate strength of the chemical fiber paper tube is obtained through the data of the movable tension sensor and the fixed tension sensor.

2. The method for detecting strength of a chemical fiber paper tube according to claim 1, wherein: A conical limiting platform is provided on the lifting base, and the lower end of the chemical fiber paper tube is sleeved on the conical limiting platform.

3. The method for detecting strength of chemical fiber paper tube according to claim 1, wherein: The bracket is provided with a translation slide rail, and the translation slide rail is provided with a plurality of sliders. The rotary motor is fixedly mounted on the movable plate, and the sliders are fixedly connected to the movable plate respectively.

4. The method for detecting strength of a chemical fiber paper tube according to claim 3, wherein: An annular groove is provided on the movable plate, and the annular groove is coaxially arranged with the turntable. The upper end of the vertical mounting rod extends into the annular groove and is mounted in the annular groove through a bearing.

5. The chemical fiber paper tube strength detection method according to claim 4, characterized in that: A communication slip ring is installed in the annular groove, and the movable tension sensor transmits signals through the communication slip ring.

6. The method for testing the strength of a chemical fiber paper tube according to claim 3, wherein: The pulling mechanism comprises a cylinder which is fixedly mounted on the bracket, and a working shaft of the cylinder is fixedly connected to the movable plate.

7. The method for testing the strength of a chemical fiber paper tube according to claim 1, wherein: The lifting drive mechanism includes a screw rod and a drive motor. The screw rod is rotatably installed on the bracket. The drive motor drives the screw rod to rotate. A screw rod pair is installed on the screw rod. The screw rod pair is fixedly connected to the lifting base. Guide rods are respectively provided on both sides of the screw rod. The lifting base is provided with a guide hole for the guide rod to move through. The guide rod is fixedly installed on the bracket.

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