Double-cooling-tank full-automatic impact test device

Abstract

The utility model discloses a full-automatic impact test device with double cooling tanks, which comprises an impact testing machine, an industrial robot and a cooling bin, the industrial robot adopts an inverted installation mode and is provided with an execution part, and the execution part is used for grabbing a sample piece in the cooling bin and placing the sample piece on an anvil block of the impact testing machine; therefore, the mechanical property of the sample piece is detected. The cooling bin is provided with a liquid cooling cavity and an air cooling cavity, and a sample piece material box is mounted in the liquid cooling cavity; according to the utility model, the cooling bin adopts a multi-station design, various types of cooling tests can be simultaneously carried out, the utilization rate of equipment is greatly improved, the requirements of mechanical property detection of large-scale metal materials are met, the cost is reduced, and the production efficiency is improved. The industrial robot is inversely installed, so that the equipment occupied space can be saved.

Description

Technical Field

[0001] The utility model relates to the field of metal performance testing, in particular to a full-automatic impact test device with double cooling tanks. Background Art

[0002] In the existing production of metal parts, it is necessary to detect the mechanical properties of the produced metal to ensure that the metal manufacturing meets the standards. In the prior art, most of the low-temperature full-automatic impact experiments are single-station, that is, only one of the liquid cooling and gas cooling stations is available, resulting in low utilization rate of the impact testing machine and inability to be compatible with impact tests in the full temperature range. Based on this, the utility model designs a full-automatic impact test device with double cooling tanks. Summary of the Utility Model

[0003] The utility model provides a full-automatic impact test device with double cooling tanks, which can solve the problems pointed out in the background art.

[0004] A full-automatic impact test device with double cooling tanks includes an impact testing machine and an industrial robot, and also includes a cooling bin. The industrial robot has an execution part, and the execution part is used to grab the specimen in the cooling bin and place it on the anvil of the impact testing machine.

[0005] The industrial robot is installed in an inverted manner. The inverted installation can save the floor space of the equipment, and a small robot can cover the specimen grabbing work of two cooling bins.

[0006] The cooling bin has a liquid cooling chamber and a gas cooling chamber, and temperature equalizing structures for making the temperature in the chambers balanced are arranged in both the liquid cooling chamber and the gas cooling chamber.

[0007] A specimen box is installed in the liquid cooling chamber.

[0008] The temperature equalizing structure in the liquid cooling chamber includes a stirring motor and stirring blades arranged at the output end of the stirring motor.

[0009] The temperature equalizing structure in the gas cooling chamber includes a feeding turntable and a driving mechanism for driving the feeding turntable to rotate.

[0010] The execution part includes a jaw unit, a vision camera unit, and a flange connecting frame for connecting with the industrial robot.

[0011] Among them, the jaw unit includes:

[0012] A jaw frame fixedly connected to the flange connecting frame, and a support plate is installed at the bottom of the jaw frame.

[0013] Jaw arms, with pressing blocks arranged on the jaw arms; and

[0014] A cylinder, installed on the jaw frame, and its output end is connected to the jaw arms.

[0015] Under the action of the air cylinder, the pressing block moves downward to fix the specimen between the pressing block and the supporting plate.

[0016] An elastic pressing rod member is further installed on the jaw arm. The elastic pressing rod member includes a rear material pressing rod and a spring sleeved on the rear material pressing rod. An ear plate is installed on the jaw arm, and a through groove matching with the rear material pressing rod is opened on the ear plate. Two limit sleeves are arranged on the rear material pressing rod, and the two limit sleeves are respectively located on the upper side and the lower side of the ear plate. The spring is located between the ear plate and one of the limit sleeves.

[0017] The vision camera unit includes:

[0018] A vision camera mounting bracket fixedly connected to the flange connecting bracket;

[0019] A vision camera located directly above the jaw unit, and the vision camera is fixedly installed on the vision camera mounting bracket; and

[0020] A camera light source installed on the vision camera mounting bracket.

[0021] Preferably, a laser displacement sensor is further included, and the laser displacement sensor is installed on the vision camera mounting bracket.

[0022] Compared with the prior art, the beneficial effects of the present utility model are as follows: The cooling bin of the present utility model adopts a multi-station design, which can simultaneously conduct various types of cooling tests, greatly improving the utilization rate of the equipment and meeting the needs of large-scale mechanical property detection of metal materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0024] Figure 2 is a schematic diagram of the structure of the cooling bin of the present utility model;

[0025] Figure 3 is a schematic diagram of the structure of the jaw unit of the present utility model;

[0026] Figure 4 is a schematic diagram of the structure of the vision camera unit of the present utility model.

[0027] DESCRIPTION OF THE REFERENCE NUMERALS:

[0028] 1 - Impact testing machine, 2 - Industrial robot, 3 - Cooling bin, 4 - Liquid cooling chamber, 5 - Air cooling chamber, 6 - Specimen box, 7 - Turntable, 8 - Flange connection frame, 11 - Jaw holder, 12 - Jaw arm, 13 - Pressing block, 14 - Cylinder, 15 - Rear material pressing rod, 16 - Spring, 17 - Ear plate, 18 - Limit sleeve, 19 - Support plate, 21 - Vision camera mounting frame, 22 - Vision camera, 23 - Camera light source, 24 - Laser displacement sensor. Detailed implementation mode

[0029] The following combines the drawings to describe in detail a specific implementation mode of the present utility model. However, it should be understood that the protection scope of the present utility model is not limited by the specific implementation mode.

[0030] As Figures 1 to 4 shown, a full-automatic impact test device with double cooling grooves provided by an embodiment of the present utility model includes an impact testing machine 1, an industrial robot 2, and a cooling bin 3. The industrial robot 2 has an execution part, and the execution part is used to grab the specimen in the cooling bin 3 and place it on the anvil of the impact testing machine 1, so as to perform the mechanical property test of the specimen.

[0031] As Figure 1 shown, the installation method of the industrial robot 2 is an inverted installation.

[0032] The cooling bin 3 has a liquid cooling chamber 4 and an air cooling chamber 5. Both the liquid cooling chamber 4 and the air cooling chamber 5 are closed by a sealing plate 9. A specimen box 6 is installed in the liquid cooling chamber 4. Temperature equalizing structures for making the temperature in the chambers balanced are provided in both the liquid cooling chamber 4 and the air cooling chamber 5. A compressor is installed in the cooling bin 3 for temperature adjustment. Specifically, the temperature equalizing structure in the liquid cooling chamber 4 includes a stirring motor and stirring blades arranged at the output end of the stirring motor; the temperature equalizing structure in the air cooling chamber 5 includes a turntable 7 and a driving mechanism for driving the turntable 7 to rotate. The driving mechanism can also adopt a motor, and the motor driving form is an existing structure, so it is not drawn in the figure and will not be elaborated here.

[0033] The cooling bin of this embodiment has a dual-station design, where one station is for liquid cooling and the other is for gas cooling; the choice of cooling medium can be based on experimental requirements. For example, for metals that need to undergo impact tests in a low-temperature environment, liquid nitrogen can be selected as the cooling medium; a placement position for fixing the specimen box 6 is designed in the liquid cooling chamber 4, and the specimen box 6 is completely immersed in the cooling medium. A stirring motor is used to continuously flow the cooling medium to ensure uniform temperature at each position of the cooling medium; a positioning surface for placing the specimens is designed on the turntable 7, and the specimens are placed on the positioning surface by the industrial robot 2. The specimens are cooled by the vaporization of liquid nitrogen, and a temperature sensor is designed on the positioning surface of each specimen to measure the temperature drop process of the specimen. In addition, to prevent the specimens and the positioning surface from condensing due to oil stains and moisture on the specimen surface during the temperature drop process, a Teflon coating is provided on the surface of the turntable 7.

[0034] The execution part of the industrial robot 2 includes a gripper unit, a vision camera unit, and a flange connection frame 8 for connecting with the industrial robot 2.

[0035] Among them, the gripper unit includes a gripper frame 11, gripper arms 12, and a cylinder 14. The gripper frame 11 is fixedly connected to the flange connection frame 8. The cylinder 14 is installed on the gripper frame 11, and its output end is connected to the gripper arm 12. A pressure block 13 is provided on the gripper arm 12, and a support plate 19 is installed at the bottom of the gripper frame 11.

[0036] Under the action of the cylinder 14, the pressure block 13 moves downward to fix the specimen between the pressure block 13 and the support plate 19.

[0037] Since the impact specimens are placed in sequence, to ensure that the position of the next specimen will not be affected during the process of taking the specimen, an elastic pressure rod member is also installed on the gripper arm 12. The elastic pressure rod member is used to press the next specimen. Specifically, the elastic pressure rod member includes a rear material pressure rod 15 and a spring 16 sleeved on the rear material pressure rod 15. An ear plate 17 is installed on the gripper arm 12, and a through groove matching the rear material pressure rod 15 is opened on the ear plate 17. Two limit sleeves 18 are provided on the rear material pressure rod 15, and the two limit sleeves 18 are respectively located on the upper side and the lower side of the ear plate 17. The spring 16 is located between the ear plate 17 and one of the limit sleeves 18.

[0038] The vision camera unit of this embodiment includes a vision camera mounting frame 21, and a vision camera 22, a camera light source 23, and a laser displacement sensor 24 installed on the vision camera mounting frame 21. The vision camera mounting frame 21 is fixedly connected to the flange connection frame 8.

[0039] The vision camera 22 is located directly above the gripper unit. The vision camera 22 and the camera light source 23 are arranged coaxially. The camera's field of view directly faces the characteristic part of the impact test specimen. In this embodiment, a specimen with a V-notch is taken as an example. By positioning the position of the V-notch, the industrial robot 2 is guided to place the specimen at a predetermined position before conducting the impact test.

[0040] The test steps of the double-cooling-tank full-automatic impact test device provided in this embodiment are as follows:

[0041] Step 1: The operator places the specimen-filled cartridge on the loading table and then confirms the completion of loading. The system is started.

[0042] Step 2: The industrial robot uses the gripper unit to take out the cartridge from the loading table and place it into the cooling chamber of the cooling device. This device has a two-station design. One station is for liquid cooling, and the other station is for gas cooling. The choice of the cooling medium can be based on experimental requirements. For example, for metals that need to conduct impact tests in a low-temperature environment, liquid nitrogen can be selected as the cooling medium.

[0043] Step 3: Set the experimental temperature. This device has full-temperature-section compatibility and can arbitrarily set the experimental temperature between -196°C and room temperature according to needs. In this embodiment, we selected an experimental temperature of -70°C.

[0044] Step 4: Start the environmental factor control system. This system can precisely control parameters such as the temperature, humidity, and air pressure of the experimental environment. In this embodiment, we controlled the environmental temperature at -70°C, the humidity at 50% RH, and the air pressure at 1 atm.

[0045] Step 5: Start the automatic control system. The industrial robot takes out the specimen from the cooling chamber and accurately places the specimen on the anvil of the impact testing machine through the vision camera positioning method for the impact test. In this embodiment, the impact energy is set at 50 J, the impact speed is 5 m / s, the impact time is 0.05 s, and the robot returns to the waiting position.

[0046] Step 6: After the experiment, through data analysis, the mechanical property parameters of the metal sample to be tested are obtained to evaluate whether it meets the quality standards.

[0047] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit and basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0048] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A double cooling tank fully automatic impact test device, comprising an impact tester and an industrial robot, characterized in that: It also includes a cooling chamber, the industrial robot has an execution part, and the execution part is used to grab the sample in the cooling chamber and place it on the anvil of the impact testing machine; The cooling chamber comprises a liquid cooling chamber and an air cooling chamber, and both the liquid cooling chamber and the air cooling chamber are provided with a temperature equalizing structure for equalizing the temperature in the chamber.

2. The double cooling tank fully automatic impact test device according to claim 1, characterized in that: A sample material box is installed in the liquid cooling chamber.

3. The double cooling tank fully automatic impact test device according to claim 1, characterized in that: The temperature uniformity structure in the liquid cooling chamber includes a stirring motor and a stirring blade arranged at the output end of the stirring motor.

4. The double cooling tank fully automatic impact test device according to claim 1, characterized in that: The temperature uniformity structure in the air cooling chamber includes a loading turntable and a driving mechanism for driving the loading turntable to rotate.

5. The double cooling tank fully automatic impact test device according to claim 1, characterized in that: The execution unit includes a gripper unit, a visual camera unit, and a flange connection frame for connecting with an industrial robot; Wherein, the clamping jaw unit comprises: A clamping jaw frame is fixedly connected to the flange connection frame, and a support plate is installed at the bottom of the clamping jaw frame; a clamping jaw arm, wherein a pressure block is disposed on the clamping jaw arm; and A cylinder is mounted on the gripper frame, and its output end is connected to the gripper arm; Under the action of the cylinder, the pressing block moves downward and fixes the sample between the pressing block and the supporting plate.

6. The double cooling tank fully automatic impact test device according to claim 5, characterized in that: An elastic pressure rod is also installed on the clamping jaw arm, and the elastic pressure rod includes a rear material pressure rod and a spring sleeved on the rear material pressure rod. An ear plate is installed on the clamping jaw arm, and a through groove cooperating with the rear material pressure rod is opened on the ear plate. Two limiting sleeves are arranged on the rear material pressure rod, and the two limiting sleeves are respectively located on the upper side and the lower side of the ear plate, and the spring is located between the ear plate and one of the limiting sleeves.

7. The double cooling tank fully automatic impact test device according to claim 5, characterized in that: The visual camera unit comprises: A visual camera mounting frame is fixedly connected to the flange connecting frame; A visual camera, located directly above the gripper unit, wherein the visual camera is fixedly mounted on a visual camera mounting frame; and Camera light source, installed on the visual camera mounting frame.

8. The double cooling tank fully automatic impact test device according to claim 7, characterized in that: It also includes a laser displacement sensor, which is installed on the visual camera mounting frame.

9. The double cooling tank fully automatic impact test device according to claim 1, characterized in that: The industrial robot is installed in an inverted manner.

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