Rubber tension testing machine

Abstract

The utility model discloses a rubber tension testing machine which comprises a base, a frame supporting mechanism, a group of sliding mechanisms, a screw rod assembly, a connecting plate, a tension meter, a first clamp and a second clamp, a frame supporting mechanism is arranged in the Z-axis direction of the base, and sliding mechanisms are arranged on the two sides of the frame supporting mechanism. The sliding mechanism is connected with the connecting plate, and the connecting plate is in sliding connection with the frame supporting mechanism. One end of the mounting plate is connected with the screw rod assembly, the other end of the mounting plate is provided with the tension meter, the tension meter is connected with the first clamp, the first clamp and the second clamp are correspondingly arranged in the Z-axis direction, and the second clamp is arranged on the base; the first clamp and the second clamp are each provided with a flexible structure. The device can measure the tensile property of rubber, realizes flexible adjustment, adapts to rubber samples of different shapes and sizes, protects the integrity of the samples, and ensures the stability and consistency in the stretching process.

Description

Technical Field

[0001] This utility model belongs to the field of tensile testing technology, and specifically relates to a rubber tensile testing machine. Background Technology

[0002] During rubber production, mechanical property testing is required. The core principle is to gradually apply tensile force and monitor the stress-strain relationship of the rubber material under tension. This method can effectively evaluate the strength, ductility, and overall material properties of rubber.

[0003] However, in the industrial testing of rubber products, irregularly shaped products are frequently encountered, posing a significant challenge to tensile testing. Most commercially available tensile testing machines for rubber are general-purpose models, designed for standard-shaped samples such as rectangular or circular cross-sections. They are not suitable for rubber products with complex shapes and varying sizes. Traditional equipment suffers from unstable clamping and sample damage when handling complex-shaped samples. Furthermore, traditional fixtures and testing methods cannot ensure the stability of rubber samples during testing, potentially leading to inaccurate measurement data or even test failure.

[0004] Therefore, the above situation urgently needs to be addressed. Utility Model Content

[0005] Purpose of the utility model: In order to overcome the above shortcomings, the purpose of this utility model is to provide a rubber tensile testing machine that can measure the tensile properties of rubber and achieve flexible adjustment to adapt to rubber samples of different shapes and sizes, protect the integrity of the samples, and ensure stability and consistency during the tensile process.

[0006] Technical Solution: A rubber tensile testing machine includes a base, a frame support mechanism, a set of sliding mechanisms, a lead screw assembly, a connecting plate, a tensile gauge, a first clamp, and a second clamp. The frame support mechanism is arranged along the Z-axis of the base, and sliding mechanisms are arranged on both sides of the frame support mechanism. The sliding mechanisms are connected to the connecting plate, and the connecting plate and the frame support mechanism are slidably connected. One end of the connecting plate is connected to the lead screw assembly, and the other end is equipped with a tensile gauge. The tensile gauge is connected to the first clamp. The first clamp and the second clamp are correspondingly arranged along the Z-axis, and the second clamp is mounted on the base. Both the first clamp and the second clamp are provided with flexible structures. This application relates to a rubber tensile testing machine. By providing flexible structures on the first clamp and the second clamp, it can better adapt to rubber samples of various shapes and sizes, ensuring the effectiveness and stability of clamping, and avoiding testing errors caused by clamp mismatch.

[0007] Furthermore, the first clamp includes a connecting support plate, a first driving device, a mechanical claw assembly, and a flexible clamping assembly. A tensile gauge is connected to the top of the connecting support plate. The first driving device is disposed inside the connecting support plate. The mechanical claw assembly is connected to the output end of the first driving device and installed at the bottom of the connecting support plate, and the mechanical claw assembly is arranged around the outside of the flexible clamping assembly. The presence of the flexible clamping assembly in this application allows the clamp to better adapt to rubber samples of different shapes and sizes. The mechanical claw assembly surrounding the flexible clamping assembly further enhances the stability and safety of the clamping. The combined use of the mechanical claw assembly and the flexible clamping assembly ensures that the sample remains stable without slipping or being damaged throughout the tensile test, thereby guaranteeing the accuracy and reliability of the test data.

[0008] Furthermore, the mechanical gripper assembly is provided with at least four mechanical grippers. This multi-grip design increases the adaptability to samples of different shapes and sizes. Especially for irregularly shaped or large samples, more mechanical grippers can better conform to their contours, thereby ensuring effective clamping.

[0009] Furthermore, the flexible clamping assembly includes a set of first flexible sheets and a set of second flexible sheets; a drive shaft is provided at the connection end of the first and second flexible sheets and the connecting support plate; the first and second flexible sheets are arranged alternately and obliquely around the bottom of the connecting support plate. Because the flexible sheets are arranged alternately and obliquely around the bottom, and the drive shaft enables adaptive opening and closing, this application can better conform to the surface of samples of different shapes and sizes, and can provide a more uniform pressure distribution during clamping. This helps to avoid sample damage caused by excessive local pressure and can more realistically simulate the force conditions in actual applications.

[0010] Furthermore, the length of the first flexible sheet is shorter than that of the second flexible sheet, which is located outside the first flexible sheet. This arrangement of placing the second flexible sheet outside the first flexible sheet helps to form a progressively expanding support structure, allowing the clamping force to be distributed more evenly across the sample. The shorter first flexible sheet provides the initial contact point, while the longer second flexible sheet provides additional support and cushioning, ensuring a more balanced pressure applied to the sample throughout the testing process.

[0011] Furthermore, both the first and second flexible sheets are made of flexible material, and their edges are both curved. This curved edge design allows the flexible sheets to better conform to sample surfaces of different shapes and sizes, increasing the actual contact area between the flexible sheets and the samples. This design is particularly advantageous for clamping rubber samples with curved or irregular shapes, providing a closer and more natural contact.

[0012] Furthermore, the second clamp includes a first support block, a second support block, a slide rod, a spring, a first clamping block, and a second clamping block; a slide rod is disposed between the first support block and the second support block, and the slide rod is covered with a spring; the first clamping block is fixedly connected to one side of the slide rod, and the second clamping block is slidably connected to the other side. When clamping samples of different sizes, the second clamping block can slide along the slide rod according to the actual thickness of the sample and be automatically adjusted to an appropriate position by the spring. This self-adjusting mechanism not only simplifies the operation process but also improves clamping efficiency and accuracy.

[0013] Furthermore, the first clamping block is provided with a set of concave blocks, and the second clamping block is provided with a corresponding set of flexible protrusions. Both the concave blocks and the flexible protrusions have anti-slip textures on their surfaces. The design of the concave blocks and flexible protrusions in this application allows them to nest together, providing a more stable clamping effect. The combined use of the concave blocks and flexible protrusions also allows the clamping force to be distributed more evenly on the sample surface, avoiding sample deformation or damage caused by excessive local pressure. This is crucial for maintaining the original state of the sample during the testing process.

[0014] Furthermore, the flexible bump and concave block are arc-shaped and interlocked; the flexible bump is made of a flexible material. Because the flexible bump and concave block are arc-shaped and interlocked, they provide a more stable fixation during clamping. This structure not only increases the contact area but also restricts sample movement within the fixture through physical interlocking, ensuring stability during testing.

[0015] Furthermore, an emergency stop button is provided on the side of the base, and a transparent protective baffle is installed around it. This design, featuring an emergency stop button on the side of the base and a transparent protective baffle, significantly improves the safety performance of the rubber tensile testing machine, ensuring the personal safety of the operator and protecting the testing equipment from potential damage. Simultaneously, it provides excellent visibility, ensuring the smooth conduct of the experiment.

[0016] As can be seen from the above technical solution, this utility model has the following beneficial effects:

[0017] 1. This application relates to a rubber tensile testing machine, which, by setting flexible structures on the first and second clamps, can better adapt to rubber samples of various shapes and sizes, and protect the integrity of the samples, further ensuring the effectiveness and stability of clamping, and avoiding test errors caused by clamp mismatch.

[0018] 2. This application relates to a rubber tensile testing machine. By incorporating a flexible clamping assembly, the clamps can better adapt to rubber samples of different shapes and sizes. A mechanical claw assembly surrounding the flexible clamping assembly further enhances the stability and safety of the clamping. The combined use of the mechanical claw assembly and the flexible clamping assembly ensures that the sample remains stable without slipping or being damaged throughout the tensile test, thereby guaranteeing the accuracy and reliability of the test data.

[0019] 3. This application relates to a rubber tensile testing machine. Because the flexible sheets are arranged in an alternating oblique spiral pattern and achieve adaptive opening and closing via a driven shaft, it can better conform to the surface of samples of different shapes and sizes, and provide a more uniform pressure distribution during clamping. This helps avoid sample damage caused by excessive local pressure and can more realistically simulate the stress conditions in actual applications.

[0020] 4. This application relates to a rubber tensile testing machine, in which the concave block and flexible protrusion are designed to nest with each other, providing a more stable clamping effect; and the combined use of the concave block and flexible protrusion can make the clamping force more evenly distributed on the sample surface, avoiding sample deformation or damage caused by excessive local pressure. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a rubber tensile testing machine;

[0022] Figure 2 This is a schematic diagram of the first fixture structure of a rubber tensile testing machine;

[0023] Figure 3 A large bottom view of a flexible clamping assembly for a rubber tensile testing machine;

[0024] Figure 4 This is a schematic diagram of the second clamp structure of a rubber tensile testing machine;

[0025] Figure 5 This is a partial large-scale drawing of the first and second clamping blocks of a rubber tensile testing machine.

[0026] Explanation of reference numerals in the attached drawings: 1-Base; 2-Frame support mechanism; 3-Sliding mechanism; 4-Screw assembly; 5-Connecting plate; 6-Force gauge; 7-First clamp; 701-Connecting support plate; 702-First driving device; 703-Mechanical claw assembly; 704-Flexible clamping assembly; 7041-First flexible sheet; 7042-Second flexible sheet; 8-Second clamp; 801-Second driving device; 802-Connecting shaft; 803-First support block; 804-Second support block; 805-Slide rod; 806-Spring; 807-First clamping block; 8071-Concave block; 808-Second clamping block; 8081-Flexible protrusion; 9-Emergency stop button. Detailed Implementation

[0027] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0028] Example 1

[0029] This embodiment describes a rubber tensile testing machine. Please refer to [link / reference]. Figure 1 As shown, the system includes a base 1, a frame support mechanism 2, a set of sliding mechanisms 3, a lead screw assembly 4, a connecting plate 5, a tension gauge 6, a first clamp 7, and a second clamp 8. The frame support mechanism 2 is arranged in the Z-axis direction of the base 1, and the sliding mechanisms 3 are arranged on both sides of the frame support mechanism 2. The sliding mechanisms 3 are connected to the connecting plate 5, and the connecting plate 5 and the frame support mechanism 2 are slidably connected. One end of the connecting plate is connected to the lead screw assembly 4, and the other end is equipped with the tension gauge 6. The tension gauge 6 is connected to the first clamp 7. The first clamp 7 and the second clamp 8 are arranged correspondingly in the Z-axis direction, and the second clamp 8 is arranged on the base 1. Both the first clamp 7 and the second clamp 8 are provided with flexible structures.

[0030] Furthermore, an emergency stop button 9 is provided on the side of the base 1, and a transparent protective baffle is provided around it.

[0031] For further details, please refer to... Figure 2 As shown, the first clamp 7 includes a connecting support plate 701, a first driving device 702, a mechanical claw assembly 703, and a flexible clamping assembly 704. The top of the connecting support plate 701 is connected to a tension gauge 6. The first driving device 702 is disposed inside the connecting support plate 701. The mechanical claw assembly 703 is connected to the output end of the first driving device 702 and is installed at the bottom end of the connecting support plate 701. The mechanical claw assembly 703 is arranged around the outside of the flexible clamping assembly 704.

[0032] Furthermore, the mechanical gripper assembly 703 is provided with at least four mechanical grippers.

[0033] For further details, please refer to... Figure 3As shown, the flexible clamping assembly 704 includes a set of first flexible sheets 7041 and a set of second flexible sheets 7042; the connection ends of the first flexible sheets 7041 and the second flexible sheets 7042 with the connecting support plate 701 are provided with driving shafts, and the first flexible sheets 7041 and the second flexible sheets 7042 can perform opening and closing movements, and can adaptively clamp the rubber sample according to the actual clamping; the first flexible sheets 7041 and the second flexible sheets 7042 are arranged alternately and obliquely around the bottom of the connecting support plate 701.

[0034] Furthermore, the first flexible sheet 7041 and the second flexible sheet 7042 are a group, and at least 6 groups are provided. The length of the first flexible sheet 7041 is less than that of the second flexible sheet 7042, and the second flexible sheet 7042 is located outside the first flexible sheet 7041.

[0035] Furthermore, both the first flexible sheet 7041 and the second flexible sheet 7042 are made of flexible material, and their sides are both curved.

[0036] For further details, please refer to... Figure 4 As shown, the second clamp 8 includes a first support block 803, a second support block 804, a slide rod 805, a spring 806, a first clamping block 807, and a second clamping block 808; a slide rod 805 is provided between the first support block 803 and the second support block 804, and the spring 806 is wrapped on the slide rod 805; the first clamping block 807 is fixedly connected to one side of the slide rod 805, and the second clamping block 808 is slidably connected to the other side.

[0037] For further details, please refer to... Figure 5 As shown, a set of concave blocks 8071 are provided on the first clamping block 807, and a set of flexible protrusions 8081 are provided on the second clamping block 808. The surfaces of the concave blocks 8071 and the flexible protrusions 8081 are provided with anti-slip textures.

[0038] Furthermore, the flexible protrusion 8081 and the concave block 8071 are arc-shaped and are fitted together; the flexible protrusion 8081 is made of a flexible material.

[0039] Example 2

[0040] This embodiment describes the working steps of a rubber tensile testing machine, and further details are provided based on the above embodiment.

[0041] The working steps of the rubber tensile testing machine include:

[0042] Step S1, Preparation Stage:

[0043] Step S101, Sample Preparation: First, select a rubber sample and conduct a preliminary evaluation based on its shape and size. Ensure the sample is suitable for tensile testing using this equipment.

[0044] Step S102, Equipment Inspection: Check whether all components are working properly, including base 1, frame support mechanism 2, sliding mechanism 3, lead screw assembly 4, etc. Pay special attention to the condition of emergency stop button 9 and its surrounding transparent protective baffle to ensure a rapid response in an emergency.

[0045] Step S2, Sample clamping:

[0046] Step S201: Adjust the first clamp 7: Control the opening and closing of the mechanical claw assembly 703 and the first flexible piece 7041 and the second flexible piece 7042 of the flexible clamping assembly 704 by the first driving device 702 on the connecting support plate 701.

[0047] At this time, the first flexible sheet 7041 and the second flexible sheet 7042 can open and close adaptively according to actual needs, closely fit the sample surface, provide initial fixation, adapt to the size of the sample, and then further enhance the clamping effect through the mechanical claw assembly 703.

[0048] Step S202: Adjust the second clamp 8:

[0049] The other end of the rubber sample is placed between the first clamping block 807 and the second clamping block 808. Utilizing the buffering effect provided by the spring 806 on the slide bar 805, a set of concave blocks 8071 on the first clamping block 807 and flexible protrusions 8081 on the second clamping block 808 are engaged, closely adhering to the sample surface to ensure stable clamping.

[0050] Step S3: Perform the test

[0051] Step S301: Start the equipment: The operation control system begins the tensile test. The lead screw assembly 4 drives the connecting plate 5 to move up and down along the frame support mechanism 2, applying tensile force to the sample.

[0052] Step S302, Monitoring the Process: Observe the experimental process through the transparent protective barrier and use a tension gauge 6 to monitor the applied tension in real time. Maintain close attention to the testing process to make timely adjustments or respond to unexpected situations.

[0053] If any dangerous situation is encountered during the test, immediately press the emergency stop button 9 to quickly stop the equipment and ensure the safety of personnel and equipment.

[0054] Step S4, Conclusion and Analysis:

[0055] Step S401: End the test: When the predetermined test conditions are reached or the sample breaks, slowly release the tension and turn off the equipment.

[0056] Step S402, Data Recording and Analysis: Record the data from the tensile tester 6, perform subsequent analysis and processing, and evaluate the performance indicators of the rubber material. The analysis results help to understand the mechanical properties of the sample.

[0057] Step S403: Clean up the site: Remove the tested samples, clean the equipment, and prepare for the next test.

[0058] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. A rubber tensile testing machine, characterized in that, The system includes a base (1), a frame support mechanism (2), a set of sliding mechanisms (3), a lead screw assembly (4), a connecting plate (5), a tension gauge (6), a first clamp (7), and a second clamp (8). The base (1) is provided with a frame support mechanism (2) in the Z-axis direction, and sliding mechanisms (3) are provided on both sides of the frame support mechanism (2). The sliding mechanisms (3) are connected to the connecting plate (5), and the connecting plate (5) and the frame support mechanism (2) are slidably connected. One end of the connecting plate (5) is connected to the lead screw assembly (4), and the other end is equipped with a tension gauge (6). The tension gauge (6) is connected to the first clamp (7). The first clamp (7) and the second clamp (8) are correspondingly arranged in the Z-axis direction, and the second clamp (8) is provided on the base (1). Both the first clamp (7) and the second clamp (8) are provided with flexible structures.

2. The rubber tensile testing machine according to claim 1, characterized in that, The first clamp (7) includes a connecting support plate (701), a first driving device (702), a mechanical claw assembly (703), and a flexible clamping assembly (704). The top of the connecting support plate (701) is connected to a tension gauge (6). The first driving device (702) is disposed inside the connecting support plate (701). The mechanical claw assembly (703) is connected to the output end of the first driving device (702) and installed at the bottom end of the connecting support plate (701). The mechanical claw assembly (703) is disposed around the outside of the flexible clamping assembly (704).

3. A rubber tensile testing machine according to claim 2, characterized in that, The mechanical gripper assembly (703) is provided with at least 4 mechanical grippers.

4. A rubber tensile testing machine according to claim 2, characterized in that, The flexible clamping assembly (704) includes a set of first flexible sheets (7041) and a set of second flexible sheets (7042); the connection ends of the first flexible sheets (7041) and the second flexible sheets (7042) with the connecting support plate (701) are provided with driving shafts; the first flexible sheets (7041) and the second flexible sheets (7042) are arranged alternately and obliquely around the bottom of the connecting support plate (701).

5. A rubber tensile testing machine according to claim 4, characterized in that, The length of the first flexible sheet (7041) is less than that of the second flexible sheet (7042), and the second flexible sheet (7042) is located outside the first flexible sheet (7041).

6. A rubber tensile testing machine according to claim 4, characterized in that, Both the first flexible sheet (7041) and the second flexible sheet (7042) are made of flexible material and have curved sides.

7. A rubber tensile testing machine according to claim 1, characterized in that, The second clamp (8) includes a first support block (803), a second support block (804), a slide rod (805), a spring (806), a first clamping block (807), and a second clamping block (808); a slide rod (805) is provided between the first support block (803) and the second support block (804), and the spring (806) is wrapped on the slide rod (805); the first clamping block (807) is fixedly connected to one side of the slide rod (805), and the second clamping block (808) is slidably connected to the other side.

8. A rubber tensile testing machine according to claim 7, characterized in that, The first clamping block (807) is provided with a set of concave blocks (8071), and the second clamping block (808) is provided with a set of flexible protrusions (8081). The surfaces of the concave blocks (8071) and the flexible protrusions (8081) are provided with anti-slip textures.

9. A rubber tensile testing machine according to claim 8, characterized in that, The flexible protrusion (8081) and the concave block (8071) are arc-shaped and are fitted together; the flexible protrusion (8081) is made of flexible material.

10. A rubber tensile testing machine according to claim 1, characterized in that, An emergency stop button (9) is provided on the side of the base (1), and a transparent protective baffle is provided around it.

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