Novel stretch film viscosity detection device

Abstract

The utility model relates to a stretch film viscosity detection device, which comprises a support frame, which comprises a support wall, a vertical support structure and a reversing roller; the stretching driving mechanism is mounted on the vertical supporting structure and drives the stretching film roll to rotate so as to tension the stretching film; the pressing force measuring mechanism is used for pressing one end of the stretching film on the supporting wall and measuring the tensile force borne by the stretching film; the detection roller module is located above the supporting wall of the supporting frame and comprises a roller and a rolling shaft fixed to the roller; the two linear modules are located on the two sides of the supporting frame, each linear module comprises a linear guide rail, a moving part capable of moving along the linear guide rail and a driver for driving the moving part to move, and a torque sensor is arranged in a clamping groove of the moving part. According to the novel tensile film viscosity detection device, the problem that the accuracy of a result is low due to the fact that the existing tensile film viscosity detection is influenced by mutual interference of a clamp and a film, test speed and manual operation can be solved.

Description

Technical Field

[0001] This utility model relates to the field of glass fiber packaging, specifically a novel stretch film viscosity testing device. Background Technology

[0002] Glass fiber direct yarn is produced in a neat, wound form. Its outer packaging typically uses stretch film, which adheres to the glass fiber and maintains the shape of the product. Therefore, this field places stringent and critical requirements on three key indicators of the stretch film: viscosity, tensile strength, and yield strength. Viscosity is particularly significant. In subsequent processing, transportation, and storage of glass fiber direct yarn, deviations in the stretch film viscosity can easily lead to "yarn unwinding." Yarn unwinding not only causes chaotic winding of the glass fiber direct yarn, hindering the production process and increasing manual handling costs, but can also damage the yarn in severe cases, directly affecting product quality and reducing the yield rate.

[0003] Currently, the viscosity of stretch films is generally tested using the peeling method. However, the test results are not accurate enough, and many factors affect the test structure, such as the interaction between the fixture and the film, the test speed, and the limited representativeness of the samples. In addition, the test data fluctuates greatly and is highly dependent on human operation. Summary of the Invention

[0004] This invention provides a novel stretch film viscosity testing device, which can overcome the problems of low accuracy in existing stretch film viscosity testing due to interference between the fixture and the film, testing speed, and human operation.

[0005] The novel stretch film viscosity testing device of this utility model includes:

[0006] The support frame is provided with horizontal support walls for supporting the stretch membrane;

[0007] A stretching drive mechanism is installed at one end of the support frame and is used to install the stretch film roll and drive the stretch film roll to rotate to tension the stretch film.

[0008] A clamping force measuring mechanism is located at the other end of the support frame. It clamps one end of the stretch membrane to the support wall and measures the tension force on the stretch membrane.

[0009] The detection roller module is located above the support wall of the support frame, and the detection roller module includes a roller and a roller fixed to the roller;

[0010] Two linear modules are located on opposite sides of the support frame. Each linear module includes a linear guide rail, a movable component that can move along the linear guide rail, and a driver that drives the movable component. The drivers of the two linear modules synchronously drive the movable component. The movable component has a slot, in which a bearing for supporting the roller is provided. The linear module also includes a torque sensor. The housing of the torque sensor is fixed to the movable component. The force measuring shaft of the torque sensor is fixed to the end of the roller that passes through the bearing and rotates synchronously. When the movable component moves along the linear guide rail, the roller is driven to translate and roll against the stretch film.

[0011] Preferably, the stretching drive mechanism includes a motor and a rotating shaft driven by the motor to rotate, and the stretch film roll is sleeved outside the rotating shaft and can be driven by the rotating shaft to rotate, thereby tensioning the stretch film.

[0012] Preferably, the clamping force measuring mechanism includes a clamping block for pressing down on the stretch film and a tension sensor located on the bottom surface of the clamping block for detecting the tension of the stretch film in a stretched state. Both the clamping block and the support wall of the support frame are provided with threaded holes, and the clamping block is fixed to the support wall by bolts.

[0013] Preferably, the driver of the linear module is a motor, and the linear module also includes a lead screw, the moving part having an internal thread that mates with the lead screw.

[0014] Compared with the prior art, this invention has the following advantages: The novel stretch film viscosity detection device of this invention allows the tension of the stretch film to be set to a fixed value, creating a uniform measurement environment for viscosity detection. This effectively avoids inaccurate viscosity detection results caused by mutual interference between the fixture and the stretch film, as well as inconsistent testing conditions. Furthermore, the test results will not fluctuate significantly due to differences in operator behavior. When the detection roller module moves at a low and uniform speed on the sample, the roller rolls on the stretch film due to friction. The resulting torque is transmitted to the roller shaft, allowing the torque sensor to detect the rolling friction torque on the roller. The magnitude of this torque is directly proportional to the viscosity of the stretch film; that is, the higher the viscosity of the stretch film, the greater the torque. Therefore, this torque can be used to characterize the viscosity intensity of the sample. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a novel stretch film viscosity detection device according to an embodiment of the present invention.

[0016] Figure Labels

[0017] 1. Support frame; 11. Support wall; 12. Vertical support structure; 13. Reversing roller;

[0018] 2. Tension drive mechanism, 21. Motor, 22. Rotary shaft;

[0019] 3. Clamping force measuring mechanism, 31. Clamping block, 311. Threaded hole;

[0020] 4. Inspection rollers, 41. Rollers, 42. Shafts;

[0021] 5. Linear module, 51. Driver, 52. Linear guide, 53. Moving part, 54. Card slot, 55. Torque sensor;

[0022] 6. Stretch film rolls. Detailed Implementation

[0023] This invention provides a novel stretch film viscosity testing device, such as... Figure 1 As shown, the assembly includes: a support frame 1, a stretching drive mechanism 2, a clamping force measuring mechanism 3, a detection roller module 4, and a linear module 5. The support frame 1 has a horizontal support wall for supporting the stretch film, which lies flat on the support wall. The clamping force measuring mechanism 3 is located above the support wall and presses one end of the stretch film roll 6, which is fed from the stretch film roll 6, against the support wall. The stretching drive mechanism 2 is installed at one end of the support frame 1 and is used to install the stretch film roll 6 and drive the stretch film roll 6 to rotate to a certain degree to tension the stretch film (sample), ensuring a tight, air-free fit between the stretch film and the support wall 11. Under tension, the clamping force measuring mechanism 3 detects the tension applied to the stretch film. The detection roller module 4 includes a roller 41 and a roller 42 fixed to the roller 41. Two linear modules 5 are located on both sides of the support frame 1. Each linear module 5 includes a linear guide rail 52, a movable component 53 that can move along the linear guide rail 52, and a driver 51 that drives the movable component 53 to move along the linear guide rail 52. The drivers 51 of the two linear modules 5 synchronously drive the two movable components 53. Each movable component 53 has a slot 54 with an upward opening. The slot 54 is provided with a bearing (not shown in the figure) for supporting the roller 42. The linear module 5 also includes a torque sensor 55. In this embodiment, the torque sensor 55 is a commercially available sensor. The housing of the torque sensor 55 is fixed to the slot 54. The force measuring shaft of the torque sensor 55 is fixed to the end of the roller 42 and rotates synchronously. When the movable component 53 moves along the linear guide rail 52, the roller 43 is driven to translate, so that the roller 41 is driven to translate and roll along the stretch film. The roller 43 also rotates accordingly.

[0024] When using the novel stretch film viscosity testing device of this invention, the stretch film is laid on the support wall, and the clamping force measuring mechanism 3 tightly presses one end of the stretch film against the other end of the support wall. Simultaneously, the stretching drive mechanism 2 tensions the stretch film. While the stretch film is taut, the clamping force measuring mechanism 3 detects the tension experienced by the stretch film. This mechanism allows the tension experienced by the stretch film to be set to a fixed value, creating a uniform measurement environment for viscosity testing. This effectively avoids inaccurate viscosity test results caused by interference between the fixture and the stretch film, as well as inconsistent test conditions, and the test results will not fluctuate significantly due to differences in operator skill. When the detection roller module 4 moves at a low and constant speed on the sample, the roller 41 rolls on the stretch film due to the frictional force of the stretch film. The torque generated is transmitted to the roller 42. The torque sensor 55 detects the rolling friction torque on the roller 41. The magnitude of this torque is proportional to the viscosity of the stretch film. That is, the greater the viscosity of the stretch film, the greater the torque. Therefore, this torque can be used to characterize the viscosity intensity of the sample. The torque detected by the torque sensor 55 has high accuracy and can more accurately reflect the viscosity intensity of the stretch film.

[0025] The support frame 1 also includes a vertical support structure 12 and a reversing roller 13 located between the vertical support structure 12 and the support wall. The vertical support structure 12 can be a support leg or a support plate; in this embodiment, it is a support leg. The stretching drive mechanism 2 is installed on the vertical support structure 12. The outer wall of the stretching membrane, which rotates with the reversing roller 13, forms a smooth transition from the vertical support structure 12 to the support wall. This arrangement prevents the reversing point between the vertical support structure 12 and the support wall from affecting the tension of the stretching membrane. Simultaneously, the reversing roller 13 rotates with the stretching membrane, thus not hindering the stretching of the membrane and making the fit between the stretching membrane and the support wall tighter. When the detection roller 4 moves on the stretching membrane, it does not cause relative movement of the stretching membrane relative to the support wall, thereby improving the accuracy and stability of the detection.

[0026] In this embodiment, as Figure 1 As shown, the stretching drive mechanism 2 includes a motor 21 and a rotating shaft 22 driven by the motor 21. The stretch film roll 6 is sleeved outside the rotating shaft 22 and driven to rotate by the rotating shaft 22. The direction of rotation can make the stretch film taut.

[0027] In this embodiment, the clamping force measuring mechanism 3 includes a clamping block 31 for pressing the stretch film to fix its end and a tension sensor (not shown in the figure) located on the bottom surface of the clamping block 31 for detecting the tension value of the stretch film in the stretched state. The clamping block 31 and the support wall of the support frame 1 are both provided with threaded holes 311. The clamping block 31 is fixed to the support wall by bolts.

[0028] The linear module 5 has a motor as its driver 51 and also includes a lead screw. The moving part 53 has an internal thread that engages with the lead screw. The linear module 5 enables the linear motion of the drive roller 42, thereby driving the roller 41 to roll on the stretch film.

[0029] The above embodiments are merely exemplary embodiments of this utility model and are not intended to limit this utility model. The scope of protection of this utility model is defined by the claims. Various modifications or equivalent substitutions made by those skilled in the art within the spirit and scope of this utility model also fall within the scope of protection of this utility model.

Claims

1. A novel apparatus for detecting the viscosity of a stretch film, characterized by, The application relates to a tensioning device for a film, comprising: a support frame provided with a horizontal support wall for supporting a tensioning film; a tensioning driving mechanism installed at one end of the support frame, used for installing a tensioning film roll and driving the tensioning film roll to rotate to tension the tensioning film; a pressing force measuring mechanism located at the other end of the support frame, used for pressing one end of the tensioning film against the support wall and measuring the tensioning force borne by the tensioning film; a detection roller module located above the support wall of the support frame, the detection roller module comprising a roller and a shaft fixed with the roller; two linear modules, the two linear modules being respectively located at two sides of the support frame, each linear module comprising a linear guide rail, a moving part capable of moving along the linear guide rail and a driver for driving the moving part to move, the drivers of the two linear modules synchronously driving the moving parts, the moving part being provided with a clamping groove, a bearing for supporting the shaft being arranged in the clamping groove, the linear module further comprising a torque sensor, the housing of the torque sensor being fixed with the moving part, the force measuring shaft of the torque sensor being fixed with the end of the shaft penetrating through the bearing and synchronously rotating, when the moving part moves along the linear guide rail, the roller is driven to translate and roll against the tensioning film.

2. The detection device of claim 1, wherein, The tensioning driving mechanism comprises a motor and a rotating shaft driven to rotate by the motor, the tensioning film roll is sleeved outside the rotating shaft and can be driven to rotate by the rotating shaft to tension the tensioning film.

3. The detection device of claim 1, wherein, The pressing force measuring mechanism comprises a pressing block for pressing the tensioning film and a tension sensor located at the bottom surface of the pressing block for detecting the tensioning force of the tensioning film in a tensioning state, the pressing block and the support wall of the support frame are both provided with threaded holes, and the pressing block is fixed to the support wall through bolts.

4. The detection device of claim 1, wherein, The driver of the linear module is a motor, and the linear module further comprises a screw rod, and the moving part is provided with an internal thread matched with the screw rod.

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