Adhesive strip bending test device

Abstract

The utility model relates to material mechanics performance test equipment technical field, concretely relates to a kind of bending test device for testing the deformation recovery performance of flexible material such as adhesive tape, film;A kind of adhesive tape bending test device, including base, the base is horizontal support structure, lower part is equipped with adjustable height's supporting leg;Fixed component, the fixed component is arranged in the upper portion one end of base, for clamping adhesive tape, it includes vertical rod, bracing plate, hanging plate and pressing strip, wherein vertical rod is vertically fixed to base, bracing plate is transversely and is connected in vertical rod top, hanging plate is hoisted in bracing plate below, pressing strip is connected with hanging plate by bolt to compress adhesive tape, and the lower portion of hanging plate abuts at adhesive tape with horizontal plane 60 ° angle of inclusion;Traction component, the traction component is arranged in the upper portion other end of base, for traction adhesive tape bending, it includes motor, speed reducer, cam, connecting rod, swing lever and pull rod, wherein motor is connected speed reducer, speed reducer drives cam, cam is hinged swing lever by connecting rod.

Description

Technical Field

[0001] This utility model relates to the technical field of material mechanical property testing equipment, specifically to a bending test device for testing the deformation recovery performance of flexible materials such as adhesive strips and films. Background Technology

[0002] In existing technologies, the bending fatigue performance testing of rubber strip materials mostly uses manual or semi-automatic equipment, which has the following problems and disadvantages:

[0003] 1. Insufficient stability of the adhesive strip: Traditional clamps are mostly planar pressing structures. The adhesive strip is prone to slipping or falling off during repeated bending, resulting in distorted test data. In particular, it cannot meet the force requirements of bending at non-horizontal angles.

[0004] 2. Inaccurate bending motion control: Most equipment uses a single-direction traction mechanism, and the bending trajectory is linear and simple, which cannot simulate the combined stress state of the rubber strip in actual applications (such as bending + stretching). In addition, the motion transmission components are prone to wear, which affects the long-term test stability. Utility Model Content

[0005] To overcome the problems of poor stability of adhesive strip fixing and difficulty in controlling compound bending motion in existing technologies, and thus accurately test deformation recovery performance, this utility model provides an adhesive strip bending test device. By setting a 60° angled hanging plate and pressure strip to fix the adhesive strip, and combining the linkage mechanism of cam-swing rod-straight groove tie rod, the device achieves uniform force on the adhesive strip during bending and accurate simulation of compound motion, thereby improving the accuracy of deformation recovery performance testing.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a rubber strip bending test device, including a base, the base being a horizontal support structure with adjustable height legs at the bottom; a fixing component, the fixing component being arranged at one end of the upper part of the base for clamping the rubber strip, which includes a vertical rod, a support plate, a hanging plate and a pressure strip, wherein the vertical rod is vertically fixed to the base, the support plate is horizontally placed and connected to the top of the vertical rod, the hanging plate is suspended below the support plate, and the pressure strip is connected to the hanging plate by bolts to press the rubber strip, and the lower part of the hanging plate abuts against... The rubber strip forms a 60° angle with the horizontal plane; the traction assembly, located at the other end of the upper part of the base, is used to traction the rubber strip to bend. It includes a motor, a reducer, a cam, a connecting rod, a rocker arm, and a pull rod. The motor is connected to the reducer, the reducer drives the cam, the cam is hinged to the rocker arm through the connecting rod, the rocker arm is connected to the pull rod through a pin, the pull rod has a T-shaped structure and one end is connected to the rubber strip, and a straight groove is opened on the upper part of the pull rod for the pin to slide, so that when the rocker arm swings, it drives the pull rod to reciprocate, realizing the bending operation of the rubber strip.

[0007] The aforementioned rubber strip bending test device has six legs, which are evenly and spaced apart on the lower part of the base and connected to the base by a threaded structure.

[0008] The aforementioned rubber strip bending test device has two uprights, arranged vertically at intervals, made of rectangular steel pipes, and fixedly connected to the base by bolts.

[0009] In the aforementioned rubber strip bending test device, the hanging plate has an L-shaped structure.

[0010] In the aforementioned rubber strip bending test device, the motor is a three-phase asynchronous motor and is fixed to the upper part of the frame by bolts.

[0011] The aforementioned rubber strip bending test device uses a worm gear reducer with a self-locking function, and is connected to the motor via a coupling.

[0012] In the aforementioned rubber strip bending test device, the two ends of the connecting rod are connected to the cam and the swing rod respectively via hinge shafts.

[0013] The beneficial effects of this utility model are:

[0014] 1. Improved stability: By setting up a hanging plate and elastic pressure strip at a 60° angle to the horizontal plane, the phenomenon of the rubber strip slipping or falling off is eliminated, ensuring uniform stress during bending;

[0015] 2. Precise control of compound motion: The cam-rocker-straight groove tie rod linkage mechanism is adopted, so that the rubber strip is subjected to bending and tensile forces at the same time, accurately simulating the actual working conditions. Attached Figure Description

[0016] The present invention will be further described below with reference to the embodiments and examples.

[0017] Figure 1 This is a schematic diagram of the structure of the rubber strip in a bent state as shown in the embodiment.

[0018] Figure 2 This is a schematic diagram of the fixed component structure in an embodiment.

[0019] Figure 3 This is a schematic diagram of the traction component structure in an embodiment.

[0020] Figure 4 This is a schematic diagram of the second bending state of the adhesive strip in the embodiment.

[0021] In the diagram: 1. Base; 2. Fixing component; 21. Upright pole; 22. Support plate; 23. Hanging plate; 24. Pressure strip; 3. Traction component; 31. Motor; 32. Reducer; 33. Cam; 34. Connecting rod; 35. Swing rod; 36. Pull rod; 37. T-block; 38. Straight groove. Detailed Implementation

[0022] The rubber strip bending test device in this embodiment mainly consists of a base 1, support legs, a fixing component 2, and a traction component 3. The overall structure is compact and easy to operate, effectively testing the deformation recovery performance of the rubber strip. Figures 1-4 As shown, the base 1 serves as the horizontal support structure of the entire test device and is made of high-strength metal material to ensure stability during the test. The lower part of the base 1 is evenly and spaced with six height-adjustable legs. The legs are connected to the base 1 through a threaded structure. By rotating the legs, the height of the base 1 can be finely adjusted to adapt to the horizontal requirements under different test environments.

[0023] The fixing component 2 is located at one end of the upper part of the base 1 and is used to clamp and fix the adhesive strip. It includes uprights 21, support plates 22, hanging plates 23, and pressure strips 24. There are two uprights 21, which are arranged vertically at intervals on one side of the upper part of the base 1. The uprights 21 are made of rectangular steel pipes and are fixed to the base 1 at the bottom by bolts to ensure the stability of the uprights 21. The support plates 22 are bolted to the top of the uprights 21. The support plates 22 are rectangular flat structures made of the same material as the uprights 21 and are tightly connected to the uprights 21 by bolts to form a stable support frame. The hanging plates 23 are bolted to the bottom of the support plates 22 and have an L-shaped structure. Made of stainless steel, it has good strength and corrosion resistance. A rubber strip is arranged at one end of the lower part of the hanging plate 23 to abut against it. A pressure strip 24, which is connected to the hanging plate 23 by bolts, is pressed onto one side of the rubber strip. The pressure strip 24 is made of rubber and has a certain degree of elasticity, which can effectively prevent the rubber strip from sliding or falling off during the test. The pressure strip 24 is tightly connected to the hanging plate 23 by bolts to realize the fixing operation of the rubber strip. In order to facilitate the bending and traction operation of the traction component 3, the angle between the lower part of the hanging plate 23 abutting the rubber strip and the horizontal plane is designed to be 60°. This angle has been verified by multiple tests to ensure that the rubber strip is subjected to uniform force during bending and improve the accuracy of the test results.

[0024] The traction assembly 3 is located at the other end of the upper part of the base 1 and is used to traction and bend the rubber strip. It includes a motor 31, a reducer 32, a cam 33, a connecting rod 34, a swing arm 35, and a pull rod 36. The motor 31 is fixed to the upper part of the frame by bolts. The motor 31 is a three-phase asynchronous motor, which has the characteristics of high power and stable speed. The reducer 32 is connected to one side of the motor 31 through a coupling. The reducer 32 is a worm gear reducer with a self-locking function to ensure the stability of the transmission system during the test. The cam 33 is keyed to one end of the reducer 32. The cam 33 is made of high-strength alloy steel and the surface is hardened to improve wear resistance. The swing arm 35 is arranged on the upper part of the base 1 through a T-block 37. The T-block 37 is fixed to the base 1 by bolts. To ensure accurate installation of the swing arm 35, one end of the swing arm 35 is hinged to the T-block 37, allowing the swing arm 35 to swing freely around the hinge point. The other end of the swing arm 35 is hinged to the cam 33 via a connecting rod 34, which is made of high-strength round steel. Both ends are connected to the swing arm 35 and the cam 33 through hinge shafts to transmit power. The pull rod 36 has a T-shaped structure. One end of the pull rod 36 is bolted to the rubber strip to ensure synchronous movement between the pull rod 36 and the rubber strip. The other end of the pull rod 36 is connected to one end of the swing arm 35 through a pin. The upper part of the pull rod 36 has a straight groove 38 for the pin to slide. The length and width of the straight groove 38 are designed according to the test requirements to ensure that the swing arm 35 can use the pin to drive the pull rod 36 to pull the rubber strip for bending and stretching operations.

[0025] Test Procedure: During the rubber strip bending test, the required size rubber strip is first cut. Then, one end of the rubber strip is placed at the lower abutment of the hanging plate 23, and the pressure strip 24 is connected to the hanging plate 23 with bolts. The other end is connected to the pull plate with bolts to fix the rubber strip. Then, the motor 31 is started. The motor 31 drives the reducer 32 to rotate via a coupling. The reducer 32 drives the cam 33 to rotate. The cam 33 drives the swing arm 35 to swing around the hinge point via a connecting rod 34. The swing arm 35 slides in the straight groove 38 of the pull rod 36 via a pin, driving the pull rod 36 to reciprocate, thus achieving the traction bending of the rubber strip. During the test, the bending frequency and number of times of the rubber strip can be controlled by adjusting the speed and running time of the motor 31 to test the deformation recovery performance of the rubber strip. After the test, the motor 31 is turned off, the rubber strip is removed, and the test data is analyzed and processed.

[0026] In summary, the rubber strip bending test device of this embodiment has a reasonable structure, is easy to operate, and can accurately test the deformation recovery performance of the rubber strip, thus having high practical value.

Claims

1. A device for testing the bending of rubber strips, characterized in that: include The base is a horizontal support structure with adjustable feet at the bottom. A fixing component is arranged at one end of the upper part of the base for clamping the rubber strip. It includes a vertical pole, a support plate, a hanging plate and a pressure strip. The vertical pole is fixed to the base, the support plate is placed horizontally and connected to the top of the vertical pole, the hanging plate is suspended below the support plate, and the pressure strip is connected to the hanging plate by bolts to press the rubber strip. The lower part of the hanging plate abuts against the rubber strip at a 60° angle to the horizontal plane. The traction assembly, located at the other end of the upper part of the base, is used for traction of the rubber strip bending. It includes a motor, a reducer, a cam, a connecting rod, a rocker arm, and a pull rod. The motor is connected to the reducer, which drives the cam. The cam is hinged to the rocker arm through the connecting rod. The rocker arm is connected to the pull rod through a pin. The pull rod has a T-shaped structure and one end is connected to the rubber strip. A straight groove is opened on the upper part of the pull rod for the pin to slide, so that when the rocker arm swings, it drives the pull rod to reciprocate, realizing the bending operation of the rubber strip.

2. The rubber strip bending test device according to claim 1, characterized in that: The number of legs is six, which are evenly and spaced apart on the lower part of the base and connected to the base by a threaded structure.

3. The rubber strip bending test device according to claim 1, characterized in that: The number of uprights is two, arranged vertically at intervals, and made of rectangular steel pipes, which are fixedly connected to the base by bolts.

4. The rubber strip bending test device according to claim 1, characterized in that: The mounting plate has an L-shaped structure.

5. The rubber strip bending test device according to claim 1, characterized in that: The motor is a three-phase asynchronous motor and is fixed to the upper part of the frame with bolts.

6. The rubber strip bending test device according to claim 1, characterized in that: The reducer is a worm gear reducer with a self-locking function and is connected to the motor via a coupling.

7. The rubber strip bending test device according to claim 1, characterized in that: The two ends of the connecting rod are connected to the cam and the rocker arm respectively via hinge shafts.

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