Tensile test system

Abstract

The utility model discloses a tensile test system, which comprises: a tensile device, which comprises a test holding unit and a tensile unit, the test holding unit is used for holding a sample to be tested, and the tensile unit is used for clamping the sample to be tested held in the test holding unit and carrying out a tensile test; the test containing units are arranged in a split mode and are controlled to be opened and closed through a first driving mechanism. The sample storage device is positioned on one side of the stretching device and is used for storing the to-be-tested sample; the automatic grabbing mechanism is used for grabbing the to-be-tested sample from the sample storage device and transferring the to-be-tested sample to the stretching device; the controlled ends of the stretching device, the first driving mechanism and the automatic grabbing mechanism are connected to the output end of the control system. According to the utility model, the automatic grabbing mechanism is adopted to replace manual work, so that the to-be-tested sample is more convenient to replace, the manual sampling time is shortened, and the test efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the technical field of tensile testing devices, and specifically to a tensile testing system. Background Technology

[0002] High-temperature tensile testing apparatuses are specialized devices used to test the mechanical properties of enameled wires under high-temperature environments. The wire is fixed at both ends by clamps, a tensile force is applied, and its mechanical response, such as tensile strength, yield strength, and modulus of elasticity, is measured under high and low temperature conditions.

[0003] Existing high-temperature tensile testing equipment requires manual operation for sample installation, centering adjustment, and thermocouple and extensometer installation, which is inefficient and prone to introducing errors. The separation of equipment cooling and sample replacement processes prevents rapid, continuous testing. When testing multiple enameled wire samples, it is impossible to quickly change samples to complete high-throughput tensile tests. Utility Model Content

[0004] In view of this, the present invention provides a tensile testing system to solve the problem of not being able to quickly change samples.

[0005] This utility model provides a tensile testing system, including:

[0006] A tensile apparatus includes a test holding unit and a tensile unit. The test holding unit is used to hold the sample to be tested, and the tensile unit is used to clamp the sample to be tested placed in the test holding unit and perform a tensile test. The test holding unit is set separately and its opening and closing are controlled by a first drive mechanism.

[0007] A sample storage device, located on one side of the stretching device, is used to store the sample to be tested;

[0008] An automatic gripping mechanism is used to grip the sample to be tested from the sample storage device and transfer it to the stretching device;

[0009] The control system is configured such that the controlled ends of the stretching device, the first drive mechanism, and the automatic gripping mechanism are respectively connected to the output end of the control system.

[0010] The beneficial effects of the aforementioned tensile testing system are as follows: The use of an automatic gripping mechanism replaces manual labor, making sample replacement more convenient, reducing manual sampling time, and significantly increasing testing efficiency. This invention, by introducing an automatic gripping mechanism, sample storage device, and control system, achieves automatic sample installation, alignment adjustment, and the installation of thermocouples and extensometers, greatly reducing manual intervention and improving operational efficiency. This invention integrates equipment cooling and sample replacement, enabling rapid sample cooling and replacement after testing, achieving high-throughput tensile testing and significantly improving testing continuity and efficiency. Because the positioning of the sample is achieved through the automatic gripping mechanism, the installation position and alignment of the sample can be more precisely controlled, avoiding errors that may arise from manual operation and ensuring the accuracy and consistency of test results.

[0011] The presence of a sample storage device allows multiple samples to be prepared in advance and stored in an orderly manner. The automatic gripping mechanism can sequentially grip and conduct tests according to the instructions of the control system, making the most of the equipment's time and space resources.

[0012] This invention integrates sample storage, gripping, tensile testing, and other functions into one system, simplifying the testing process, reducing the switching and coordination problems between different devices, and making the entire testing process smoother and more efficient.

[0013] In one optional embodiment, the sample storage device is a rotary sample chamber, the rotary sample chamber comprising:

[0014] The silo body has a discharge port on it;

[0015] A rotating platform is provided with multiple clamps, each of which clamps and positions a sample to be tested.

[0016] In one optional embodiment, the automatic gripping mechanism has at least a first position and a second position; when the automatic gripping mechanism is in the first position, the automatic gripping mechanism extends from the discharge port into the hopper to grip the fixture; when the automatic gripping mechanism is in the second position, the automatic gripping mechanism places the gripped fixture into the test holding unit.

[0017] The beneficial effects of the above technical solution are as follows: by directly gripping the fixture with the sample to be tested by the automatic gripping mechanism 7, instead of directly gripping the sample itself, it can be ensured that the sample is accurately centered in each test, effectively avoiding the centering error problem that may be caused by directly gripping the sample, and improving the accuracy and consistency of the test results.

[0018] In one optional embodiment, a door is provided at the discharge port of the silo body. The door is opened and closed under the control of a second drive mechanism, the controlled end of which is connected to the output end of the control system.

[0019] In one alternative implementation, the automatic gripping mechanism includes a robotic arm that moves along a set path under the drive of a control system.

[0020] In one optional implementation, the test container unit includes:

[0021] The electric furnace heating layer has a cavity inside suitable for holding the sample to be tested. The electric furnace heating layer has through holes suitable for allowing part of the sample to be tested to pass through. The electric furnace heating layer is also equipped with a heating device.

[0022] An electric furnace cooling layer is disposed around the electric furnace heating layer, and the electric furnace cooling layer is connected to the cooling system;

[0023] The electric furnace heating layer is divided into a first electric furnace heating layer and a second electric furnace heating layer, and the electric furnace cooling layer is also divided into a first electric furnace cooling layer and a second electric furnace cooling layer. The outer wall of the first electric furnace heating layer is connected to the inner wall of the first electric furnace cooling layer, and the outer wall of the second electric furnace heating layer is connected to the inner wall of the second electric furnace cooling layer. The first driving mechanism is connected to the first electric furnace heating layer and / or the first electric furnace cooling layer to control the opening and closing of the test container unit.

[0024] In one optional embodiment, a temperature sensor is provided on the heating layer of the electric furnace, the temperature sensor being used to detect the heating temperature of the heating layer of the electric furnace and to feed back the detected temperature information to the control system.

[0025] In one optional embodiment, the inner cavity of the electric furnace cooling layer is hollow, and the inner cavity of the electric furnace cooling layer is connected to the cooling medium supply system through a transport pipe, and the transport pipe is equipped with a temperature control valve and a flow control system.

[0026] In one alternative embodiment, the temperature control valve and flow control system includes a valve body, a valve plate, and a valve plate actuator, wherein the valve plate actuator is used to control the oscillation of the valve plate to control the cooling rate.

[0027] In one optional embodiment, the tensile testing system further includes a parameter setting module for setting the target cooling temperature and the target heating temperature;

[0028] The control system is configured to receive temperature information detected by a temperature sensor and set temperature information from a parameter setting module, and compare the detected temperature information with the set temperature information to control the temperature control valve, the flow control system, and the automatic grasping mechanism.

[0029] In summary, the technical solution of this utility model has the following advantages:

[0030] This invention links the three stages of high-temperature testing, furnace cooling, and sample replacement, enabling real-time monitoring of the temperature at each stage of the high-temperature tensile test and control of the cooling rate. This invention also automates the detection of multiple sets of tensile test data, achieving high-throughput high-temperature tensile testing. Attached Figure Description

[0031] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 This is a structural schematic diagram of a tensile testing system provided by the present invention;

[0033] Figure 2 A schematic diagram of the cooling control principle of a tensile testing system provided by this utility model.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Stretching table; 2. Electric furnace cooling layer; 3. Electric furnace heating layer; 4. Sample to be tested; 5. Temperature sensor; 6. Medium inlet; 7. Automatic gripping mechanism; 8. Electric furnace control cabinet; 9. Medium outlet; 10. Temperature control valve and flow control system; 11. Sample storage device; 12. Transport pipeline; 13. Heating device. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] High-temperature tensile testing apparatuses are specialized devices used to test the mechanical properties of enameled wires under high-temperature environments. The wire is fixed at both ends by clamps, a tensile force is applied, and its mechanical response, such as tensile strength, yield strength, and modulus of elasticity, is measured under high and low temperature conditions.

[0038] Existing high-temperature tensile testing equipment can perform tensile tests on enameled wires, but it has the following problems:

[0039] In terms of efficiency: the preparation work for each test is tedious. The installation of the specimen, including the neutralization adjustment, installation of thermocouples and extensometers, is a complex and highly precise process. Any deviation in any step may lead to test failure or inaccurate data, requiring re-preparation, which greatly reduces the overall efficiency of the test.

[0040] In terms of time consumption: Due to various error factors such as systematic and random errors in the equipment, multiple repeated tests are often required to obtain accurate and reliable data. It may be necessary to conduct 5-10 tensile tests on the same set of samples. Each test itself involves a long process of heating, stabilizing the temperature, stretching, and data acquisition, which prolongs the entire research cycle.

[0041] To achieve high-throughput high-temperature tensile testing, this invention integrates equipment cooling and sample replacement, enabling truly rapid and efficient processing of large numbers of test samples. It achieves fully automated high-throughput technology by linking each step of the process together for automated tensile testing.

[0042] According to an embodiment of this utility model, a tensile testing system is provided for tensile testing of enameled wire, combined with... Figure 1 As shown, the device includes a tensile testing apparatus, a sample storage device 11, an automatic gripping mechanism 7, and a control system. The tensile testing apparatus includes a test holding unit and a tensile unit. The test holding unit holds the sample to be tested, and the tensile unit clamps the sample 4 placed in the test holding unit and performs a tensile test. The test holding unit is a separate unit, and its opening and closing are controlled by a first drive mechanism. The sample storage device 11 is located on one side of the tensile testing apparatus and is used to store the sample to be tested. The automatic gripping mechanism 7 is used to grip the sample to be tested from the sample storage device and transfer it to the tensile testing apparatus. The controlled ends of the tensile testing apparatus, the first drive mechanism, and the automatic gripping mechanism 7 are respectively connected to the output end of the control system.

[0043] When it is necessary to transfer the sample to be tested from the sample storage device 11 to the tensile testing device, the control system controls the first drive mechanism to open the test holding unit. The automatic gripping mechanism 7 then grips the sample to be tested from the sample storage device 11 into the test holding unit. The control system then controls the first drive mechanism to reverse its movement to close the test holding unit. Finally, the control system controls the tensile testing unit to hold the sample to be tested for tensile testing. When it is necessary to remove the sample to be tested from the sample storage device 11, the control system controls the first drive mechanism to open the test holding unit, and the automatic gripping mechanism 7 removes the sample from the test holding unit.

[0044] The aforementioned tensile testing system utilizes an automatic gripping mechanism 7 to replace manual labor, making sample replacement more convenient, reducing manual sampling time, and significantly increasing testing efficiency. This embodiment, by introducing the automatic gripping mechanism 7, sample storage device 11, and control system, achieves automatic sample installation, alignment adjustment, and the installation of thermocouples and extensometers, greatly reducing manual intervention and improving operational efficiency. This embodiment integrates equipment cooling and sample replacement, enabling rapid sample cooling and replacement after testing, achieving high-throughput tensile testing and significantly improving testing continuity and efficiency.

[0045] Because the positioning of the sample to be tested is carried out by the automatic gripping mechanism 7, the installation position and alignment of the sample can be controlled more precisely, avoiding errors that may be caused by manual operation, and ensuring the accuracy and consistency of the test results.

[0046] The presence of the sample storage device 11 allows multiple samples to be prepared in advance and stored in an orderly manner. The automatic gripping mechanism 7 can sequentially grip and conduct tests according to the instructions of the control system, making the most of the equipment's time and space resources.

[0047] This embodiment integrates sample storage, gripping, tensile testing, and other functions into one system, simplifying the testing process, reducing switching and coordination issues between different devices, and making the entire testing process smoother and more efficient.

[0048] In some embodiments, the sample storage device 11 is a rotary sample chamber, which includes a chamber body and a rotating platform. The chamber body has a discharge port. The rotating platform has multiple clamps, each clamping and positioning a sample to be tested.

[0049] The automatic gripping mechanism 7 has at least a first position and a second position, and can switch between the two positions. This simplifies the operation process, reduces manual intervention, and makes the entire process smoother and more efficient. Because the rotating platform can rotate, the clamp carrying the sample to be tested can rotate to the discharge port position, fixing the first position of the automatic gripping mechanism 7 and eliminating the need for complex control. In the first position, the automatic gripping mechanism 7 extends from the discharge port into the chamber to clamp the sample. In the second position, the automatic gripping mechanism 7 places the clamped sample into the test container.

[0050] In this embodiment, the automatic gripping mechanism 7 directly clamps the fixture with the sample to be tested, instead of directly clamping the sample itself. This ensures that the sample is precisely centered in each test, effectively avoiding the centering error problem that may be caused by directly clamping the sample, and improving the accuracy and consistency of the test results.

[0051] Since the fixture itself has already preliminarily positioned and fixed the sample, the automatic gripping mechanism only needs to be responsible for transferring the fixture to the test holding unit, thus reducing the risk of sample displacement or damage during the transfer process and ensuring the stability and reliability of the test.

[0052] In some embodiments, a door is provided at the discharge port of the chamber. The door can block the discharge port of the chamber when no material is being removed, ensuring that external impurities cannot contaminate the sample to be tested. The door is opened and closed under the control of a second drive mechanism, the controlled end of which is connected to the output end of the control system.

[0053] The second drive mechanism is a commonly used structure. More specifically, the second drive mechanism is a linkage drive mechanism, which includes a linkage and a motor. The motor drives the linkage to move, which in turn drives the door to rotate along the track, thus opening and closing the door. Alternatively, the second drive mechanism can also be a linear drive mechanism, including a linear guide rail, a lead screw nut, a slider, a lead screw, and a motor. The motor drives the lead screw to rotate, which in turn drives the lead screw nut, which is fitted with the lead screw, to move. This, in turn, drives the door connected to the lead screw nut to move linearly along the linear guide rail, thus opening and closing the door.

[0054] In some embodiments, the automatic gripping mechanism 7 includes a robotic arm that moves along a set path under the drive of a control system.

[0055] In some embodiments, the tensile testing system further includes a tensile table 1, wherein both the test container unit and the tensile unit are disposed on the tensile table 1.

[0056] The tensile unit includes two grippers and a tensile assembly, which can drive the upper gripper to move vertically. When the automatic gripping mechanism 7 places the fixture with the sample to be tested into the test holding unit, the control system controls the test holding unit to close. Then, the upper and lower grippers clamp the sample to be tested, and the tensile assembly pulls the sample to be tested to perform a tensile test.

[0057] In some embodiments, the test container unit includes an electric furnace heating layer 3 and an electric furnace cooling layer 2. The electric furnace heating layer 3 is an electric furnace temperature control box, and its interior is provided with a container cavity suitable for holding the sample to be tested. The electric furnace heating layer 3 has through holes suitable for allowing a portion of the sample to pass through, and these through holes communicate with the container cavity. A heating device 13, which is a high-frequency thermocouple, is also provided inside the electric furnace heating layer 3. The electric furnace cooling layer 2 is located around the electric furnace heating layer 3 and is connected to a cooling system.

[0058] The electric furnace heating layer 3 is divided into a first electric furnace heating layer and a second electric furnace heating layer, and the electric furnace cooling layer 2 is also divided into a first electric furnace cooling layer and a second electric furnace cooling layer. The outer wall of the first electric furnace heating layer is connected to the inner wall of the first electric furnace cooling layer, and the outer wall of the second electric furnace heating layer is connected to the inner wall of the second electric furnace cooling layer. A first drive mechanism is connected to the first electric furnace heating layer and / or the first electric furnace cooling layer to control the opening and closing of the test container unit.

[0059] The first driving mechanism is a currently common structure. More specifically, the first driving mechanism includes a rotating shaft and a motor. The rotating shaft is connected to the first electric furnace heating layer and / or the first electric furnace cooling layer, and the motor is connected to the rotating shaft. Thus, when the motor rotates, it can drive the first electric furnace heating layer and the first electric furnace cooling layer to rotate through the rotating shaft, thereby realizing the opening and closing of the test container unit. Alternatively, the first driving mechanism can also be a cylinder-driven mechanism. A cylinder is hinged to the outer wall of the first electric furnace cooling layer, and the fixed end of the cylinder is also hinged. The opening and closing of the test container unit can be realized by driving the cylinder.

[0060] In some embodiments, a temperature sensor 5 is provided on the heating layer 3 of the electric furnace. The temperature sensor 5 is used to detect the heating temperature of the heating layer 3 and feed the detected temperature information back to the control system. When the cooling temperature reaches the target temperature, the cooling medium in the cooling layer 2 of the electric furnace is emptied, and the chamber door is opened to replace the fixture. In this embodiment, the tensile test, subsequent cooling, and sample replacement are performed fully automatically by controlling the temperature change of the electric furnace temperature control chamber.

[0061] In some embodiments, the inner cavity of the electric furnace cooling layer 2 is hollow. The inner cavity of the electric furnace cooling layer 2 is connected to a cooling medium supply system via a transport pipe 12. The cooling medium supplied by the cooling medium supply system can be liquid. A temperature control valve and a flow control system 10 are provided on the transport pipe 12. The electric furnace cooling layer 2 is provided with a medium inlet 6 and a medium outlet 9, both of which are connected to the inner cavity of the electric furnace cooling layer 2. The transport pipe 12 is connected at the medium inlet 6.

[0062] Temperature sensor 5 converts the temperature signal into an electrical signal or other measurable signal, which is then transmitted to the temperature control valve and flow control system to control the cooling time.

[0063] The temperature control valve and flow control system 10 includes a valve body, a valve plate, and a valve plate actuator. The valve plate actuator is used to control the swing state of the valve plate to control the cooling rate.

[0064] In some embodiments, the tensile testing system further includes a parameter setting module for setting a target cooling temperature and a target heating temperature. The control system is configured to receive temperature information detected by the temperature sensor 5 and the set temperature information from the parameter setting module, and compare the detected temperature information with the set temperature information to control the temperature control valve, the flow control system 10, and the automatic gripping mechanism 7.

[0065] The control system can be an electric furnace control cabinet 8, which is equipped with a display screen to show the temperature. The parameter setting module is a hardware module located inside the electric furnace control cabinet 8.

[0066] The specific test procedure of the above tensile testing system includes a tensile testing stage, a cooling stage, and a material collection stage. The specific details of the above stages are explained below.

[0067] Tensile test procedure: The automatic gripping mechanism 7 takes the clamp from the rotating sample chamber, passes it through the temperature control chamber, and places it in the heating layer 3 of the electric furnace for fixation. The heating device is started, the electric furnace temperature is set, and the test is completed at high temperature. The computer records the tensile data and the actual temperature, and the system is shut down.

[0068] Cooling process: combined Figure 2 As shown, the operator sets the target cooling temperature to 100℃ through the parameter setting module. Other relevant parameters, such as heating rate and cooling rate, can also be set according to experimental requirements.

[0069] The cooling medium supply system is activated, supplying cooling medium to the inner cavity of the electric furnace cooling layer 2. Temperature sensor 5 monitors the current temperature within the test container in real time and transmits the data to the control system.

[0070] The control system compares the current temperature detected by the temperature sensor with the target cooling temperature (100℃) set by the parameter setting module.

[0071] If the current temperature is above 100℃, the control system will increase the cooling medium flow rate by controlling the temperature control valve and the flow control system. If the current temperature is below or equal to 100℃, the material handling phase will begin.

[0072] Material handling process: When the control system confirms that the sample temperature has dropped to 100℃, the automatic gripping mechanism 7 will perform the following operations: the control system controls the opening of the electric furnace cooling layer and the electric furnace heating layer, and controls the stretching unit to release the sample. The automatic gripping mechanism 7 moves to the second position and takes out the sample that has completed the test along with the fixture.

[0073] Subsequently, the automatic gripping mechanism 7 returns to the first position, grabs the next sample to be tested and its fixture from the rotating sample chamber, and places it inside the test holding unit, ready for the next test.

[0074] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A tensile testing system, characterized in that, include: A tensile apparatus includes a test holding unit and a tensile unit. The test holding unit is used to hold the sample to be tested, and the tensile unit is used to clamp the sample to be tested placed in the test holding unit and perform a tensile test. The test holding unit is set separately and its opening and closing are controlled by a first drive mechanism. The sample storage device (11) is located on one side of the stretching device and is used to store the sample to be tested; An automatic gripping mechanism (7) is used to grip the sample to be tested from the sample storage device and transfer it to the stretching device; The controlled ends of the stretching device, the first drive mechanism and the automatic gripping mechanism (7) are respectively connected to the output end of the control system.

2. The tensile testing system according to claim 1, characterized in that, The sample storage device (11) is a rotary sample chamber, which includes: The silo body has a discharge port on it; A rotating platform is provided with multiple clamps, each of which clamps and positions a sample to be tested.

3. The tensile testing system according to claim 2, characterized in that, The automatic gripping mechanism (7) has at least a first position and a second position; when the automatic gripping mechanism (7) is in the first position, the automatic gripping mechanism (7) extends from the discharge port into the hopper to grip the fixture; when the automatic gripping mechanism (7) is in the second position, the automatic gripping mechanism (7) places the gripped fixture into the test holding unit.

4. The tensile testing system according to claim 2, characterized in that, The discharge port of the silo is provided with a silo door, which is opened and closed by a second drive mechanism. The controlled end of the second drive mechanism is connected to the output end of the control system.

5. The tensile testing system according to claim 1, characterized in that, The automatic gripping mechanism (7) includes a robotic arm, which moves along a set path under the drive of the control system.

6. The tensile testing system according to any one of claims 1-5, characterized in that, The test container unit includes: The electric furnace heating layer (3) has a cavity inside that is suitable for holding the sample to be tested. The electric furnace heating layer (3) has a through hole that is suitable for allowing part of the sample to be tested to pass through. The electric furnace heating layer (3) is also equipped with a heating device (13). The electric furnace cooling layer (2) is set on the periphery of the electric furnace heating layer (3), and the electric furnace cooling layer (2) is connected to the cooling system; The electric furnace heating layer (3) is divided in half into a first electric furnace heating layer and a second electric furnace heating layer, and the electric furnace cooling layer (2) is divided in half into a first electric furnace cooling layer and a second electric furnace cooling layer. The outer wall of the first electric furnace heating layer is connected to the inner wall of the first electric furnace cooling layer, and the outer wall of the second electric furnace heating layer is connected to the inner wall of the second electric furnace cooling layer. The first driving mechanism is connected to the first electric furnace heating layer and / or the first electric furnace cooling layer to control the opening and closing of the test container unit.

7. The tensile testing system according to claim 6, characterized in that, A temperature sensor (5) is provided on the heating layer (3) of the electric furnace. The temperature sensor (5) is used to detect the heating temperature of the heating layer (3) of the electric furnace and to feed back the detected temperature information to the control system.

8. The tensile testing system according to claim 7, characterized in that, The inner cavity of the electric furnace cooling layer (2) is hollow. The inner cavity of the electric furnace cooling layer (2) is connected to the cooling medium supply system through a transport pipe (12). A temperature control valve and a flow control system (10) are installed on the transport pipe (12).

9. The tensile testing system according to claim 8, characterized in that, The temperature control valve and flow control system (10) includes a valve body, a valve plate and a valve plate actuator, wherein the valve plate actuator is used to control the swing state of the valve plate in order to control the cooling rate.

10. The tensile testing system according to claim 9, characterized in that, The tensile testing system also includes a parameter setting module, which is used to set the target cooling temperature and the target heating temperature. The control system is configured to receive temperature information detected by temperature sensor (5) and set temperature information from parameter setting module, and compare the detected temperature information with the set temperature information to control the temperature control valve, flow control system (10), and automatic gripping mechanism (7).

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