A new material-based felt tensile property detection device

Abstract

The present application relates to tension detection technical field, and disclose a kind of based on new material's felt tensile property detection device, including detection table, still including pulling component, the detection table top is fixedly installed with moving frame, the moving frame right side is opened with moving groove, the detection table top is fixedly installed with adapter frame, the adapter frame front side slidingly penetrates with pressing frame, the pulling component includes moving rod, drive equipment, placing frame, clamping frame, reset spring, limit slot, elastic expansion plate, pull flat hole and pull flat plate, the moving rod is fixedly installed in detection table top, when clamping frame moves to rear side, felt wrinkle can make its thickness increase, felt thickness increase can make limit slot unable to align with elastic expansion plate free end, by the mechanical feedback of unable to clamp, operator can be prompted felt clamping place wrinkle is thicker, to avoid wrinkle sample into detection link and improve tensile detection accuracy.

Description

Technical Field

[0001] This invention relates to the field of tensile testing technology, and in particular to a device for testing the tensile properties of felt based on a new material. Background Technology

[0002] In industrial settings, felt needs to withstand continuous or instantaneous tensile forces, so its tensile properties need to be tested after production. Felt sample testing usually uses felt samples of uniform size.

[0003] Patent CN120445831B discloses a novel device and method for testing the tensile properties of titanium alloy materials. The device includes a workbench and a support frame mounted on top of it. Movable blocks are installed on both sides of two crossbeams. Force sensors are installed on adjacent sides of the two crossbeams and connected to a clamping and tensioning assembly. A rangefinder is installed on the outer side of the crossbeams. Movable sleeves are fitted on the outer sides of both ends of the longitudinal bidirectional lead screw. A control assembly for moving the movable sleeves is connected to the rear of the support frame. This patent facilitates lubrication of the outer side of the longitudinal bidirectional lead screw, preventing rust and subsequent jamming, thus ensuring stable tension applied by the crossbeams to the test object and improving the accuracy of tensile property testing for novel materials like titanium alloys.

[0004] In the aforementioned patent, lubrication of the outer side of the longitudinal bidirectional lead screw is performed to prevent rust and subsequent jamming. However, felt itself is prone to wrinkling, which can cause uneven stress on the felt sample, leading to errors in the measured tensile strength. Furthermore, when the felt breaks, the drive device generates additional impact force due to inertia, resulting in an inflated tensile strength reading from the tensile sensor. Additionally, the rapid, jerky swinging of the broken felt can scratch operators and cause injury. Therefore, it is necessary to design a felt tensile performance testing device based on a new material to address these issues. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a device for testing the tensile properties of felt based on new materials.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A device for testing the tensile properties of felt based on a new material includes a testing platform and a tensile assembly. A movable frame is fixedly installed on the top of the testing platform, and a movable groove is opened on the right side of the movable frame. A transfer frame is fixedly installed on the top of the testing platform, and a pressing frame slides through the front side of the transfer frame. The tensile assembly includes a movable rod, a driving device, a placement frame, a clamping frame, a return spring, a limiting groove, an elastic telescopic plate, a flattening hole, and a flattening plate. The movable rod is fixedly installed on the top of the testing platform, the driving device is disposed on the circumferential surface of the movable rod, the placement frame is fixedly installed at the bottom of the driving device, the clamping frame is slidably installed at the bottom of the driving device, the return spring is disposed between the clamping frame and the driving device, the limiting groove is opened on the right side of the clamping frame, the elastic telescopic plate is fixedly installed on the front side of the driving device, the flattening hole is opened on the front side of the clamping frame, and the flattening plate is rotatably installed on the inner wall of the flattening hole. A tension sensor is installed inside the driving device. When the clamping frame moves backward, the felt wrinkles will increase its thickness. The increased thickness of the felt will prevent the limiting groove from aligning with the free end of the elastic telescopic plate.

[0007] As a preferred embodiment of the present invention, a spring is provided between the stretching plate and the stretching hole. The spring can support the stretching plate. The free end of the elastic telescopic plate abuts against the clamping frame. The driving device contacts the moving groove. The stretching plate, in conjunction with the elastic force of the spring, stretches the top of the felt flat. After the top of the felt is fixed.

[0008] As a preferred embodiment of the present invention, the elastic telescopic plate is used to limit the clamping frame, the pulling plate is used to flatten the felt, the pulling plate rotates due to the reaction force of the compressed felt, the rotation of the pulling plate will compress the spring, the pressing frame is used to assist clamping, and the tension sensor is used to record the tensile data of the felt.

[0009] As a preferred embodiment of the present invention, it further includes a speed control component and an anti-swing component. The speed control component is used to limit the moving speed of the drive equipment, and the anti-swing component is used to prevent the felt from swinging after tearing. The speed control component includes a hollow rod, a solid rod, an elastic telescopic rod, an arc-shaped plate, a discharge hole, and a hollow hole. The solid rod moves slowly upward so that after the felt breaks, the drive equipment can move slowly upward. The slow upward movement of the drive equipment prevents inertia from generating additional impact force. The hollow rod is fixedly installed on the top of the testing platform, the solid rod is slidably installed on the inner wall of the hollow rod, the elastic telescopic rod is fixedly installed through the front side of the moving frame, the arc-shaped plate is fixedly installed on the free end of the elastic telescopic rod, the discharge hole is opened on the front side of the arc-shaped plate, and the hollow hole is opened on the circumferential surface of the hollow rod.

[0010] As a preferred embodiment of the present invention, a sealing ring is provided between the hollow rod and the solid rod to increase the sealing performance between them. A spring is provided between the hollow rod and the solid rod to support the solid rod. The arc-shaped plate abuts against the hollow rod, and the arc-shaped plate is squeezed by the gas inside the hollow rod, causing it to detach from the hollow rod, thereby allowing the solid rod to move downwards quickly.

[0011] As a preferred embodiment of the present invention, the top of the solid rod is fixedly connected to the driving device, and the arc-shaped plate is made of rubber. The use of rubber as the material of the arc-shaped plate can increase the fit between the arc-shaped plate and the hollow rod.

[0012] As a preferred embodiment of the present invention, the anti-swing assembly includes a docking frame, a docking rod, a shielding frame, a hollow block, and a grooved block. The upward movement of the docking rod will cause the shielding frame to move upward, and the upward movement of the shielding frame will continuously shield the middle part of the felt. The docking frame is fixedly installed on the circumferential surface of the solid rod, the docking rod is fixedly installed on the inner wall of the docking frame, the shielding frame is fixedly installed on the circumferential surface of the docking rod, the hollow block is fixedly installed on the circumferential surface of the pressing frame, and the grooved block is fixedly installed on the rear side of the adapter frame.

[0013] As a preferred embodiment of the present invention, the hollow block is in contact with the grooved block, and a debris trough is provided on the top of the detection platform. The debris can be collected through the debris trough. The shielding frame is elastic, and the pressing frame shakes off the felt debris attached to the back of the pressing frame. The felt debris is shaken off by the pressing frame and falls into the debris trough under its own gravity.

[0014] The present invention has the following beneficial effects: 1. In this invention, if the felt wrinkles increase its thickness, the increased thickness will prevent the limiting groove from aligning with the free end of the elastic telescopic plate. This misalignment will prevent the clamping frame from clamping the felt. The mechanical feedback from the inability to clamp the felt indicates to the operator that the wrinkles at the clamping point are too thick, thus preventing wrinkled samples from entering the testing process and improving the accuracy of tensile strength testing. By using the tensioning plate in conjunction with the elasticity of the spring to flatten the top of the felt, the continuous elasticity of the spring and the uniform tension applied to the top of the felt by the tensioning plate can smooth out the wrinkles before clamping, reducing the uneven thickness caused by the wrinkles and ensuring the authenticity of the test data.

[0015] 2. In this invention, after the felt breaks by slowly moving the solid rod upward, the driving device can also slowly move upward. The slow upward movement of the driving device prevents the inertia from generating additional impact force, thereby reducing the inertial impact force from being mistakenly collected by the tensile sensor, so that the detected tensile strength index is consistent with the true performance of the felt.

[0016] 3. In this invention, the arc-shaped plate is squeezed by the gas inside the hollow rod and will detach from the hollow rod, thereby allowing the solid rod to move downward quickly. The rapid downward movement of the solid rod allows the drive device to quickly reset downward. The drive device can quickly return to its original position, which can significantly shorten the cycle time of a single test and improve the timeliness of continuous testing of large batches of felt samples.

[0017] 4. In this invention, the upward movement of the connecting rod will cause the shielding frame to move upward. The upward movement of the shielding frame will continuously shield the middle of the felt, thereby preventing the felt from swinging when it breaks. By the shielding frame moving upward synchronously with the connecting rod, the middle of the felt is continuously shielded throughout the stretching process, which can effectively intercept the random swinging at the moment of breakage and ensure the safety of the operator.

[0018] 5. In this invention, the felt debris attached to the back of the pressing frame is shaken off by the shaking of the pressing frame. The felt debris is shaken off by the pressing frame and falls into the debris trough under its own gravity. If the felt debris is attached to the back of the pressing frame, it will form a layer of easily slippery particle pad. By shaking off the debris in time, the sample can be prevented from slipping off in the early stage of stretching. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure proposed in this invention; Figure 2 This is a schematic diagram of the positional structure of the testing platform and the moving frame proposed in this invention; Figure 3 The present invention proposes Figure 2 Enlarged schematic diagram of section A in the middle; Figure 4 This is a schematic diagram of the positional structure of the driving device and the mounting frame proposed in this invention; Figure 5 This is a schematic diagram of the positional structure of the hollow block and the grooved block proposed in this invention; Figure 6 This is a schematic diagram of the positional structure of the adapter and pressing frame proposed in this invention; Figure 7 This is a schematic diagram of the hollow rod half-section structure proposed in this invention.

[0020] In the diagram: 1. Testing table; 2. Moving frame; 3. Moving groove; 4. Moving rod; 5. Drive device; 6. Placement frame; 7. Clamping frame; 8. Return spring; 9. Limiting groove; 10. Elastic telescopic plate; 11. Flattening hole; 12. Flattening plate; 131. Hollow rod; 132. Solid rod; 133. Elastic telescopic rod; 134. Arc plate; 135. Discharge hole; 136. Hollow hole; 141. Adapter frame; 142. Pressing frame; 143. Docking frame; 144. Docking rod; 145. Shielding frame; 146. Hollow block; 147. Groove block. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] Reference Figure 1-6 One embodiment of the present invention is: a device for testing the tensile properties of felt based on a new material, comprising a testing platform 1 and a tensile assembly. A movable frame 2 is fixedly installed on the top of the testing platform 1, and a movable groove 3 is provided on the right side of the movable frame 2. A transfer frame 141 is fixedly installed on the top of the testing platform 1, and a pressing frame 142 slides through the front side of the transfer frame 141. The tensile assembly includes a movable rod 4, a driving device 5, a placement frame 6, a clamping frame 7, a return spring 8, a limiting groove 9, an elastic telescopic plate 10, a flattening hole 11, and a flattening plate 12. The movable rod 4 is fixedly installed on the top of the testing platform 1, and the driving device 5 is disposed on the movable rod 1. The rod 4 is circumferentially mounted. The placement frame 6 is fixedly installed at the bottom of the drive device 5. The clamping frame 7 is slidably installed at the bottom of the drive device 5. The return spring 8 is set between the clamping frame 7 and the drive device 5. The limiting groove 9 is opened on the right side of the clamping frame 7. The elastic telescopic plate 10 is fixedly installed on the front side of the drive device 5. The flattening hole 11 is opened on the front side of the clamping frame 7. The flattening plate 12 is rotatably installed on the inner wall of the flattening hole 11. The drive device 5 is equipped with a tension sensor. Through the mechanical feedback of the inability to clamp, it can prompt the operator that the folds at the clamping point of the felt are too thick, thereby avoiding the folded sample from entering the testing process and improving the accuracy of tensile strength testing.

[0023] A spring is provided between the stretching plate 12 and the stretching hole 11. The spring supports the stretching plate 12. The free end of the elastic telescopic plate 10 abuts against the clamping frame 7. The driving device 5 contacts the moving groove 3. The stretching plate 12, together with the elastic force of the spring, stretches the top of the felt. After the top of the felt is fixed, the continuous elastic force of the spring and the uniform tension applied to the top of the felt by the stretching plate 12 can smooth out the wrinkles before clamping, reduce the uneven thickness caused by the wrinkles, and thus ensure the authenticity of the test data.

[0024] The elastic telescopic plate 10 is used to limit the clamping frame 7, the pulling plate 12 is used to flatten the felt, the pulling plate 12 rotates due to the reaction force of the compressed felt, the rotation of the pulling plate 12 will compress the spring, the pressing frame 142 is used to assist clamping, and the tension sensor is used to record the tensile data of the felt.

[0025] During operation: After placing the felt between the clamping frame 7 and the placement frame 6, push the clamping frame 7 to move backward. The rearward movement of the clamping frame 7 will contact the return spring 8 and compress it. The return spring 8 will deform and store force under the compression of the clamping frame 7. Simultaneously, the rearward movement of the clamping frame 7 will align the free end of the elastic telescopic plate 10 with the limiting groove 9. After the limiting groove 9 aligns with the free end of the elastic telescopic plate 10, the free end of the elastic telescopic plate 10 will move to the left under its own elastic force. This leftward movement will contact the inner wall of the limiting groove 9 and limit the clamping frame 7. The clamping frame 7, limited by the free end of the elastic telescopic plate 10, will clamp the felt. If the felt itself has many wrinkles, when the clamping frame 7 moves backward, the wrinkles will increase its thickness. This increased thickness will prevent the limiting groove 9 from aligning with the free end of the elastic telescopic plate 10. The alignment of the free end prevents the clamping frame 7 from clamping the felt, thus indicating to the operator that the felt clamping area has thick wrinkles. When the clamping frame 7 moves backward, it will drive the pulling plate 12 to move backward. The pulling plate 12 will contact the felt and squeeze it. The pulling plate 12 will rotate due to the reaction force of the squeezed felt. The rotation of the pulling plate 12 will squeeze the spring. The spring will deform and store force due to the squeeze of the pulling plate 12. At the same time, the pulling plate 12, together with the elastic force of the spring, will flatten the top of the felt. After the top of the felt is fixed, the front of the adapter frame 141 is equipped with a linear motor and the output end of the linear motor is fixedly connected to the pressing frame 142. The operation of the linear motor drives the pressing frame 142 to move forward. The pressing frame 142 will contact the bottom of the felt and fix the bottom of the felt. After the felt is fixed, the drive device 5 moves upward to perform a tensile test on the felt and break the felt.

[0026] Reference Figure 1-7 Based on the above embodiments, another embodiment of the present invention further includes a speed control component and an anti-swing component. The speed control component is used to limit the moving speed of the drive device 5, and the anti-swing component is used to prevent the felt from swinging after tearing. The speed control component includes a hollow rod 131, a solid rod 132, an elastic telescopic rod 133, an arc plate 134, a discharge hole 135, and a hollow hole 136. The drive device 5 moves slowly upward to prevent inertia from generating additional impact force. The hollow rod 131 is fixedly installed on the top of the testing platform 1, the solid rod 132 is slidably installed on the inner wall of the hollow rod 131, the elastic telescopic rod 133 is fixedly inserted through the front side of the moving frame 2, the arc plate 134 is fixedly installed on the free end of the elastic telescopic rod 133, the discharge hole 135 is opened on the front side of the arc plate 134, and the hollow hole 136 is opened on the circumferential surface of the hollow rod 131. The drive device 5 moves slowly upward to prevent inertia from generating additional impact force, thereby reducing the inertial impact force from being mistakenly collected by the tensile sensor, so that the detected tensile strength index is consistent with the true performance of the felt.

[0027] A sealing ring is provided between the hollow rod 131 and the solid rod 132 to increase the sealing between them. A spring is provided between the hollow rod 131 and the solid rod 132 to support the solid rod 132. The arc plate 134 abuts against the hollow rod 131. The arc plate 134 is squeezed by the gas inside the hollow rod 131 and will detach from the hollow rod 131, allowing the solid rod 132 to move downward quickly. It can be quickly returned to its original position by the drive device 5, which can significantly shorten the cycle time of a single test and improve the timeliness of continuous testing of a large number of felt samples.

[0028] The top of the solid rod 132 is fixedly connected to the drive device 5. The arc plate 134 is made of rubber, which increases the fit between the arc plate 134 and the hollow rod 131.

[0029] The anti-swing assembly includes a docking frame 143, a docking rod 144, a shielding frame 145, a hollow block 146, and a grooved block 147. The docking frame 143 is fixedly installed on the circumferential surface of the solid rod 132, the docking rod 144 is fixedly installed on the inner wall of the docking frame 143, the shielding frame 145 is fixedly installed on the circumferential surface of the docking rod 144, the hollow block 146 is fixedly installed on the circumferential surface of the pressing frame 142, and the grooved block 147 is fixedly installed on the rear side of the adapter frame 141. By using the shielding frame 145, which moves upward synchronously with the docking rod 144, the middle of the felt is continuously shielded throughout the stretching process, effectively intercepting the random swing at the moment of breakage and ensuring operator safety.

[0030] Hollow block 146 contacts groove block 147. The top of the testing table 1 is provided with a debris trough, through which debris can be collected. The shielding frame 145 is elastic. If felt debris adheres to the back of the pressing frame 142, it will form a layer of easily sliding granular pad. By shaking off the debris in time, the sample can be prevented from slipping in the initial stage of stretching. The shaking of the pressing frame 142 will shake off the felt debris attached to the back of the pressing frame 142. The felt debris is shaken off by the pressing frame 142 and falls into the debris trough under its own gravity.

[0031] During operation, when the drive device 5 moves upward and breaks the felt, it continues to move upward due to its own inertia. This upward movement causes the solid rod 132 to move upward as well. The upward movement of the solid rod 132 pulls on the spring, causing it to deform and store force. Simultaneously, the upward movement of the solid rod 132 slowly draws the gas outside the hollow rod 131 into the hollow rod 131 through the exhaust hole 135. This slow upward movement of the solid rod 132, after breaking the felt, allows the drive device 5 to move upward slowly. The upward movement prevents additional impact force from inertia. When the drive device 5 moves downward to reset, the downward movement of the drive device 5 will drive the solid rod 132 downward. The downward movement of the solid rod 132 will compress the gas inside the hollow rod 131. The gas inside the hollow rod 131 will be discharged from the hollow hole 136 due to the compression of the solid rod 132. When the gas inside the hollow rod 131 is discharged from the hollow hole 136, it will compress the arc plate 134. The arc plate 134 will be separated from the hollow rod 131 due to the compression of the gas inside the hollow rod 131, thereby allowing the solid rod 132 to move downward quickly. The rapid downward movement of the solid rod 132 allows the drive device 5 to quickly reset downward.

[0032] The upward movement of the solid rod 132 will cause the docking frame 143 to move upward, which in turn will cause the docking rod 144 to move upward, which will in turn cause the shielding frame 145 to move upward. The upward movement of the shielding frame 145 will continuously shield the middle of the felt, thereby preventing the felt from swinging when it breaks. At the same time, after the tensile strength test of the felt is completed, the linear motor starts to drive the pressing frame 142 to move forward. The forward movement of the pressing frame 142 will loosen the felt. At the same time, the forward movement of the pressing frame 142 will cause the hollow block 146 to move forward. The forward movement of the hollow block 146 will hit the groove block 147 and cause it to vibrate. The vibration of the hollow block 146 will in turn cause the pressing frame 142 to vibrate. The vibration of the pressing frame 142 will shake off the felt debris attached to the back of the pressing frame 142. The felt debris is shaken off by the pressing frame 142 and falls into the debris trough under its own gravity.

[0033] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for testing the tensile properties of felt based on a new material, comprising a testing table (1), characterized in that, It also includes a pulling component, a speed control component and an anti-swing component. A movable frame (2) is fixedly installed on the top of the testing platform (1). A movable slot (3) is opened on the right side of the movable frame (2). A converter frame (141) is fixedly installed on the top of the testing platform (1). A pressing frame (142) slides through the front side of the converter frame (141). The pulling assembly includes a moving rod (4), a driving device (5), a placement frame (6), a clamping frame (7), a return spring (8), a limiting groove (9), an elastic telescopic plate (10), a flattening hole (11), and a flattening plate (12). The moving rod (4) is fixedly installed on the top of the testing table (1). The driving device (5) is set on the circumferential surface of the moving rod (4). The placement frame (6) is fixedly installed on the bottom of the driving device (5). The clamping frame (7) is slidably installed on the bottom of the driving device (5). The return spring (8) is set between the clamping frame (7) and the driving device (5). The limiting groove (9) is opened on the right side of the clamping frame (7). The elastic telescopic plate (10) is fixedly installed on the front side of the driving device (5). The flattening hole (11) is opened on the front side of the clamping frame (7). The flattening plate (12) is rotatably installed on the inner wall of the flattening hole (11). A tension sensor is installed inside the driving device (5). The speed control component is used to limit the moving speed of the drive device (5), and the anti-swing component is used to prevent the felt from being torn and swayed.

2. The device for testing the tensile properties of felt based on a new material according to claim 1, characterized in that, A spring is provided between the stretching plate (12) and the stretching hole (11), the free end of the elastic telescopic plate (10) abuts against the clamping frame (7), and the driving device (5) contacts the moving groove (3).

3. The device for testing the tensile properties of felt based on a new material according to claim 2, characterized in that, The elastic telescopic plate (10) is used to limit the clamping frame (7), the stretching plate (12) is used to stretch the felt flat, the pressing frame (142) is used to assist in clamping, and the tension sensor is used to record the tensile data of the felt.

4. The device for testing the tensile properties of felt based on a new material according to claim 3, characterized in that, The speed control assembly includes a hollow rod (131), a solid rod (132), an elastic telescopic rod (133), an arc plate (134), a discharge hole (135), and a hollow hole (136). The hollow rod (131) is fixedly installed on the top of the testing platform (1). The solid rod (132) is slidably installed on the inner wall of the hollow rod (131). The elastic telescopic rod (133) is fixedly installed through the front side of the moving frame (2). The arc plate (134) is fixedly installed on the free end of the elastic telescopic rod (133). The discharge hole (135) is opened on the front side of the arc plate (134). The hollow hole (136) is opened on the circumferential surface of the hollow rod (131).

5. The device for testing the tensile properties of felt based on a new material according to claim 4, characterized in that, A sealing ring is provided between the hollow rod (131) and the solid rod (132), and a spring is provided between the hollow rod (131) and the solid rod (132). The arc plate (134) abuts against the hollow rod (131).

6. The device for testing the tensile properties of felt based on a new material according to claim 5, characterized in that, The top of the solid rod (132) is fixedly connected to the drive device (5), and the arc plate (134) is made of rubber.

7. The device for testing the tensile properties of felt based on a new material according to claim 6, characterized in that, The anti-swing assembly includes a docking frame (143), a docking rod (144), a shield (145), a hollow block (146), and a groove block (147). The docking frame (143) is fixedly installed on the circumferential surface of the solid rod (132). The docking rod (144) is fixedly installed on the inner wall of the docking frame (143). The shield (145) is fixedly installed on the circumferential surface of the docking rod (144). The hollow block (146) is fixedly installed on the circumferential surface of the pressing frame (142). The groove block (147) is fixedly installed on the rear side of the adapter frame (141).

8. The device for testing the tensile properties of felt based on a new material according to claim 7, characterized in that, The hollow block (146) contacts the grooved block (147), the top of the detection table (1) is provided with a crushing trough, and the shielding frame (145) is elastic.

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