A polyurethane waterproof coating performance detection device

Abstract

The application relates to a polyurethane waterproof coating performance detection device and relates to the technical field of material performance testing. The device comprises a detection base, a detection box and a mechanical hand. The detection box is arranged on the detection base. The mechanical hand is rotationally arranged on one side of the detection base and is used for clamping a dumbbell-shaped sample. The detection box comprises a box body and a box cover. The bottom of the box cover is provided with ultraviolet lamps and heating lamps. The box body is provided with a box body arranged below the ultraviolet lamps and the heating lamps in parallel. The box body is used for clamping the spherical bodies at the two ends of the dumbbell-shaped sample. A gap is formed in the side wall of the box body. The gap is used for clamping the dumbbell-shaped sample into the box body and continuing to rotate downward by the mechanical hand. Through the cooperation of the mechanical hand and the detection box, automatic clamping, positioning and environmental exposure testing of the same dumbbell-shaped sample are realized. Positioning errors and operation uncertainties caused by manual transfer of the sample between different devices are effectively avoided. A unified reference condition is provided for subsequent mechanical testing. The standardization degree of the testing process is improved.

Description

Technical Field

[0001] This application relates to the technical field of material performance testing, and in particular to a device for testing the performance of polyurethane waterproof coatings. Background Technology

[0002] Polyurethane waterproof coatings are high-performance polymer-based protective materials. The cured film they form exhibits excellent elasticity, adhesion, and aging resistance, making them crucial for ensuring water tightness in construction, transportation, and other engineering fields. Accurate evaluation of the mechanical and durability properties of this type of material is a core step in verifying its engineering applicability. Currently, the testing of polyurethane waterproof coating performance relies heavily on multiple single-function devices such as electronic universal testing machines, low-temperature flexibility testers, impermeability testers, and thermal aging chambers. This method requires the preparation of multiple standard dumbbell-shaped specimens for different test items such as tensile, bending, and aging resistance, and the operation of operators to repeatedly move, clamp, and test these specimens between different devices.

[0003] The entire process is not only cumbersome, but also suffers from the systematic errors between multiple devices and the inherent differences between multiple samples. Continuous multi-dimensional mechanical testing of the same sample under the same environmental conditions severely restricts the uniformity and accuracy of the test results. Summary of the Invention

[0004] In order to conduct continuous multi-dimensional mechanical tests on the same sample under the same environmental conditions and to improve the uniformity and accuracy of the test results, this application provides a polyurethane waterproof coating performance testing device.

[0005] A performance testing device for polyurethane waterproof coating, wherein the polyurethane waterproof coating is in the form of a dumbbell sample, the device includes: a testing base; a testing box; a robot arm disposed on the testing base; a robot arm rotatably disposed on one side of the testing base for gripping the dumbbell sample; the testing box includes a box body and a box cover hinged to the box body, the bottom of the box cover is provided with an ultraviolet lamp and a heating lamp, and a housing is arranged side by side inside the box body below the ultraviolet lamp and the heating lamp, the housing being used to hold the spherical parts at both ends of the dumbbell sample, and a clearance groove is provided on the side wall of the housing body for the robot arm to grip the dumbbell sample, insert it into the housing, and continue to rotate downwards.

[0006] By adopting the above technical solution, when performing performance testing on polyurethane waterproof coatings, a dumbbell-shaped sample of the polyurethane waterproof coating is gripped into a testing chamber by a robotic arm. The spherical part of the dumbbell sample is then inserted into the chamber, and the robotic arm continues to rotate the sample downwards, causing it to undergo a bending test under the pressure of the robotic arm and the support of the chamber. After the bending test, an aging test is performed using an ultraviolet lamp, followed by a high-temperature test using heating, thus achieving bending pressure, aging, and high-temperature testing of the polyurethane waterproof coating. It should be noted that the performance testing sequence of the polyurethane waterproof coating in this embodiment can be changed according to the testing standards. Through the coordinated operation of the robotic arm and the testing chamber, automatic gripping, positioning, and environmental exposure testing of the same dumbbell-shaped sample are achieved, effectively avoiding positioning errors and operational uncertainties caused by manual sample transfer between different devices. This provides a unified benchmark for subsequent mechanical testing and improves the standardization of the testing process.

[0007] Optionally, the clearance groove extends through the top wall of the box to form a clearance groove opening. The box cover covers the clearance groove opening on the box. With the box cover covering the box, the robotic arm can still rotate up and down inside the box through the clearance groove.

[0008] By adopting the above technical solution, the unique design of the clearance groove ensures the airtightness of the test chamber to maintain a stable test environment (such as temperature and ultraviolet intensity), while providing a physical channel for the continuous operation of the robotic arm. This decouples environmental simulation from automated operation, enabling the sample to complete all pretreatment steps in a controlled environment, ensuring the consistency of environmental exposure conditions, and providing an equipment foundation for the weather resistance testing of polyurethane waterproof coatings.

[0009] Optionally, the heating lamp and the ultraviolet lamp are arranged side by side, the ultraviolet lamps are in pairs, the heating lamp is located between the pair of ultraviolet lamps, and the length direction of the ultraviolet lamp and the heating lamp is the same as the length direction of the dumbbell-shaped design.

[0010] By adopting the above technical solution, the arrangement of the ultraviolet lamps and heating lamps ensures that the entire effective gauge length of the dumbbell-shaped sample receives uniform thermal radiation and ultraviolet irradiation, avoiding material property variations caused by localized overheating or uneven aging. This uniform exposure is crucial for accurately assessing the degradation of the material's intrinsic properties, ensuring that subsequent mechanical property tests on the same sample truly reflect the material's performance changes under the specified environment, thus improving the reliability of the correlation data between environmental aging and mechanical properties in polyurethane waterproof coating testing.

[0011] Optionally, the robotic arm includes a robotic arm and a pair of grippers, the rotation axis of the grippers being parallel to the extension line of the gripper's handle portion, the grippers gripping the dumbbell-shaped handle portion, and the robotic arm rotating within the relief groove.

[0012] By employing the above technical solution, the grippers are specifically designed for the geometric features of dumbbell-shaped specimens. By clamping the robust grip section rather than the fragile effective gauge length, the clamping process effectively prevents pre-damage to the specimen or the introduction of initial stress. This non-destructive clamping ensures the original state of the specimen before testing, allowing the data obtained from subsequent tensile tests (such as tensile strength and elongation at break) to truly represent the initial properties of the material.

[0013] Optionally, a swing arm is fixed below the box body, and a rotating column is rotatably mounted on the swing arm. The end of the rotating column away from the swing arm is rotatably connected to the inner wall of the box body. A drive assembly is provided inside the box body to drive the end of the swing arm away from the box body to rotate. The drive assembly is located between a pair of swing arms and is used to drive the swing arms to swing in opposite directions.

[0014] By adopting the above technical solution, the pendulum and drive assembly constitute a sample position switching mechanism. This mechanism can drive the sample-carrying chamber to swing, thereby realizing the switching of the sample between different testing positions within a single sealed chamber. This design allows the same sample to be immediately moved to the next position (such as in preparation for torque testing) after environmental exposure, achieving seamless connection of multiple testing steps within the integrated equipment and fundamentally eliminating systematic and operational errors caused by changing equipment or reloading samples.

[0015] Optionally, the gripper on the robotic arm is in a state of opening and releasing the dumbbell shape, and the gripper located below the dumbbell shape rotates to a vertically downward direction. The gripper below the dumbbell shape is used to activate the drive assembly to drive the swing arm to rotate in the opposite direction.

[0016] By adopting the above technical solution, the release action of the robotic arm is linked with the station switching drive. When the robotic arm completes the sample placement and opens to a specific posture, the gripper below it acts as a trigger mechanism to automatically start the drive assembly. This mechanical linkage simplifies the control logic, improves the coordination and reliability of equipment actions, ensures the continuity and precision of the placement and switching process, and reduces potential failure points and timing errors caused by independent control components.

[0017] Optionally, the drive assembly includes: a rotating drum rotatably mounted on the bottom wall of the housing and located between a pair of swing arms; push rods disposed on both sides of the peripheral wall of the rotating drum for pushing the pair of swing arms to rotate in opposite directions; and a transmission component disposed inside the rotating drum for transmitting the downward force of the gripper to the rotating drum to drive the rotating drum to rotate.

[0018] By adopting the above technical solution, the downward linear motion of the robotic arm is converted into the rotational motion of the drum through a transmission component, which in turn drives the pendulum to complete the swing. This purely mechanical transmission and conversion method has a compact structure and rapid response, avoiding the control complexity, increased cost, and durability issues in high-temperature and high-UV environments caused by using motors or other drive sources, thus improving the stability and lifespan of the device under specific testing environments.

[0019] Optionally, the transmission component includes: a receiving platform for abutting against the gripper below the robotic arm; a transmission rod extending downward from the bottom wall of the receiving platform; a spring disposed at the end of the transmission rod away from the receiving platform; a groove is provided inside the rotating drum for the spring to extend and retract and for the transmission rod to slide, the groove extending through the bottom of the rotating drum, the end of the spring away from the transmission rod being disposed on the bottom wall of the housing exposed by the groove, and the spring force acting on the transmission rod; a pair of abutting blocks are provided at the lower end of the transmission rod, and a pair of wedges are provided on the inner wall of the rotating drum, the inclined surface at the top of the wedges abutting against the abutting blocks, the abutting blocks being used to abut the wedges to rotate and drive the rotating drum to rotate.

[0020] By sampling the above technical solution, a wedge mechanism is used to achieve unidirectional motion transmission and automatic reset. When the gripper presses down, the abutment block moves along the inclined plane of the wedge, overcoming the spring force and forcing the rotating drum to rotate; when the gripper rises, under the action of the spring reset, the transmission rod drives the abutment block to slide back to its original position along the inclined plane, preparing for the next trigger. This achieves unidirectional drive and automatic reset, ensuring that the stroke is fixed and the action is consistent for each station switch, thereby guaranteeing the positioning accuracy of the sample between different test positions.

[0021] Optionally, the inclined surface at the top of the wedge is connected to the surface of the rotating drum where the wedge is located.

[0022] By sampling the above technical solutions, the smooth and continuous inclined surface design ensures that the contact between the abutment block and the wedge is a linear transition, reducing the impact and wear during the movement process, making the transmission smoother, and helping the swing rod to push the push rod under the action of gravity to drive the rotating drum and the wedge to reset after the transmission rod is raised, thus facilitating the abutment block to reset from the rotating drum surface where the wedge is located to the inclined surface of the wedge.

[0023] Optionally, a limiting disc is provided on the transmission rod. When the limiting disc abuts against the top of the wedge, the abutting block abuts against the surface of the rotating drum where the wedge is located.

[0024] By sampling the above technical solutions, the limit plate plays a mechanical limiting role, accurately defining the upward reset endpoint of the transmission rod, preventing the transmission rod from excessively rebounding under the action of the spring, ensuring that the abutment block can accurately return to the initial preset position each time, thereby ensuring that the starting point of the triggering action is consistent and further improving the accuracy of the repeatability of the workstation switching.

[0025] In summary, this application includes at least one of the following beneficial technical effects: Through the coordinated operation of the robotic arm, the testing box and the built-in drive components, the continuous operation of automatically picking up, exposing to the environment and switching workstations of the same dumbbell-shaped sample in a closed environment is realized. This fundamentally eliminates the systematic errors introduced by the transfer of multiple devices and manual operation, ensures the uniformity of the test benchmark, and significantly improves the accuracy and comparability of polyurethane waterproof coating test data. Through the optimized layout of heating lamps and ultraviolet lamps, as well as the drive design of the box, swing arm and mechanical linkage, it is ensured that the effective gauge length of the sample can withstand uniform environmental stress and can seamlessly switch test positions within the same device. This provides the equipment foundation for continuous, multi-dimensional and consistent performance testing of the same sample and solves the interference of sample differences and environmental inconsistencies on test results. By adopting a purely mechanical wedge transmission and limit mechanism, the robot's movements are precisely converted into workstation switching power, realizing a fully automatic cycle of triggering, driving and resetting. This structure not only has reliable response and high repeatability, but also avoids the problem of easy failure of electrical control components in harsh testing environments such as high temperature and ultraviolet light, thus improving the long-term stability and durability of the device in polyurethane waterproof coating testing. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the polyurethane waterproof coating performance testing device provided in an embodiment of the present invention.

[0027] Figure 2 This is a cross-sectional schematic diagram of the box provided in an embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of the torque test state structure provided in an embodiment of the present invention.

[0029] Explanation of reference numerals in the attached drawings: 1. Detection base; 2. Detection box; 21. Box body; 211. Casing body; 212. Relief groove; 213. Swing rod; 214. Rotating column; 22. Box cover; 221. Ultraviolet lamp; 222. Heating lamp; 3. Robotic arm; 31. Robotic arm; 32. Gripper; 4. Support base; 41. Motor; 5. Drive assembly; 51. Rotary drum; 511. Slide groove; 512. Wedge; 52. Push rod; 521. Push block; 53. Transmission component; 531. Receiving platform; 532. Transmission rod; 533. Spring; 534. Abutment block; 535. Limiting plate; 6. Dumbbell style. Detailed Implementation

[0030] The following is in conjunction with the appendix Figures 1-3 This application will be described in further detail.

[0031] This application discloses a performance testing device for polyurethane waterproof coatings. The polyurethane waterproof coating is a dumbbell-shaped sample 6, as shown in the following embodiment. Figure 1 , Figure 1 This is a schematic diagram of the polyurethane waterproof coating performance testing device provided in an embodiment of the present invention. The polyurethane waterproof coating performance testing device includes a testing base 1, a testing box 2, and a robotic arm 3. The testing box 2 is disposed on the testing base 1. The robotic arm 3 is rotatably disposed on one side of the testing base 1 and is used to grip dumbbell-shaped sample 6. The testing box 2 includes a box body 21 and a box cover 22 hinged to the box body 21. An ultraviolet lamp 221 and a heating lamp 222 are disposed at the bottom of the box cover 22. A housing 211 is disposed side by side inside the box body 21, located below the ultraviolet lamp 221 and the heating lamp 222. The housing 211 is used to hold the spherical bodies at both ends of the dumbbell-shaped sample 6. A clearance groove 212 is provided on the side wall of the housing body 21 for the robotic arm 3 to grip the dumbbell-shaped sample 6, insert it into the housing 211, and continue to rotate downward.

[0032] In this embodiment, a support base 4 is provided on the detection base 1, and the support base 4 is located on one side of the detection box 2. A robotic arm 3 is rotatably mounted on the support base 4, and is driven to rotate by a motor 41 on the support base 4. The rotation axis of the robotic arm 3 on the support base 4 is parallel to the length direction of the dumbbell-shaped sample 6 placed inside the box 211. The motor 41 can drive the robotic arm 3 to rotate 360 ​​degrees on the support base 4.

[0033] For example, the housing 211 is shaped like a sofa and has an opening at the top so that the two ends of the dumbbell sample 6 can be inserted into the housing 211 under the rotation of the robotic arm 3, and the two ends of the dumbbell sample 6 are locked by the housing 211 so that the robotic arm 3 can grasp the dumbbell sample 6 and continue to rotate it downward under the support of the housing 211, thereby realizing the pressure test of the dumbbell sample 6.

[0034] In some embodiments, the clearance groove 212 penetrates the top wall of the housing 21 to form the clearance groove 212 opening. The housing cover 22 covers the housing 21 and covers the clearance groove 212 opening. With the housing cover 22 covering the housing 21, the robotic arm 31 can still rotate up and down inside the housing 21 through the clearance groove 212.

[0035] In this embodiment, the clearance groove 212 is U-shaped. When the robotic arm 3 picks up the dumbbell-shaped sample 6 and rotates it to be parallel with the detection base 1, the dumbbell-shaped sample 6 is just inserted into the housing 211. However, at this time, there is still space below the robotic arm 3 in the clearance groove 212, so that the robotic arm 3 can pick up the dumbbell-shaped sample 6 and rotate it downward under the fixation of the housing 211 to perform a bending test on the dumbbell-shaped sample 6. This helps to obtain the correspondence between pressure, bending degree, and integrity of the dumbbell-shaped sample 6, and helps to obtain the pressure and bending degree under which the dumbbell-shaped sample 6 can still maintain its integrity. This also helps to measure the pressure environment under which the polyurethane waterproof coating can maintain its waterproofness.

[0036] In some embodiments, heating lamp 222 and ultraviolet lamp 221 are arranged side by side, with a pair of ultraviolet lamps 221 and heating lamp 222 located between the pair of ultraviolet lamps 221. The length directions of ultraviolet lamp 221 and heating lamp 222 are the same as the length direction of dumbbell pattern 6.

[0037] In this embodiment, both the heating lamp 222 and the ultraviolet lamp 221 are elongated and located at the bottom of the cover 22, so as to facilitate the ultraviolet aging and high temperature testing of the dumbbell sample 6 within the enclosure of the box 21.

[0038] In some embodiments, the robotic arm 3 includes a robotic arm 31 and a pair of grippers 32, the rotation axis of the grippers 32 being parallel to the extension line of the gripper grip portion of the grippers 32, the grippers 32 gripping the grip portion of the dumbbell-shaped 6, and the robotic arm 31 rotating within the relief groove 212.

[0039] In this embodiment, the gripper 32 has an L-shaped cross-section. The gripper 32 on the robotic arm 31 is electrically controlled to rotate in opposite directions to clamp the dumbbell-shaped sample 6, or to rotate in opposite directions to release the dumbbell-shaped sample 6. After the gripper 32 rotates in opposite directions, the gripper 32 at the upper end of the robotic arm 31 rotates into a vertical L-shape, and the gripper 32 at the lower end of the robotic arm 31 rotates into an inverted L-shape.

[0040] In some embodiments, see Figure 2 , Figure 2This is a cross-sectional schematic diagram of the housing 21 provided in an embodiment of the present invention. A swing rod 213 is fixed at the bottom of the housing 211. A rotating column 214 is rotatably mounted on the swing rod 213. The end of the rotating column 214 away from the swing rod 213 is rotatably connected to the inner wall of the housing 21. A drive assembly 5 is provided inside the housing 21 to drive the end of the swing rod 213 away from the housing 211 to rotate. The drive assembly 5 is located between a pair of swing rods 213 and is used to drive the swing rods 213 to swing in opposite directions.

[0041] In this embodiment, the housings 211 are arranged side by side inside the box 21. Each housing 211 has a fixed swing arm 213 at its lower end, with the end of the swing arm 213 suspended away from the housing 211. The rotation axis of the swing arm 213 extends horizontally. The swing arm 213 is rotatably connected to the box 21 via a rotating column 214, thus supporting the housing 211 while simultaneously causing it to swing within the box 21. This facilitates torque testing of the dumbbell-shaped sample 6 using the swinging housings 211, determining the torque at which the dumbbell-shaped sample 6 can remain intact without cracking. The drive assembly 5 is located between the pair of swing arms 213 to simultaneously drive both sides of the swing arms 213.

[0042] In some embodiments, see Figure 2 and Figure 3 , Figure 3 The diagram shows the torque test state structure provided in this embodiment of the invention. The gripper 32 is in the state of opening and releasing the dumbbell-shaped 6 on the robotic arm 31. The gripper 32 located below the dumbbell-shaped 6 rotates to the vertically downward direction. The gripper 32 below the dumbbell-shaped 6 is used to start the drive assembly 5 to drive the swing arm 213 to rotate in the opposite direction.

[0043] In this embodiment, since the gripper 32 at the lower end of the robotic arm 31 is in an inverted L-shape, after the gripper 32 opens, the robotic arm 31 can bypass the dumbbell-shaped sample 6 placed on the box 211, rotate to the bottom of the dumbbell-shaped sample 6 and contact the drive component 5, thereby activating the drive component 5.

[0044] In some embodiments, the drive assembly 5 includes a rotating drum 51, a push rod 52, and a transmission member 53. The rotating drum 51 is rotatably mounted on the bottom wall inside the housing 21 and located between a pair of swing rods 213. The push rod 52 is disposed on both sides of the peripheral wall of the rotating drum 51 and is used to push the pair of swing rods 213 to rotate in opposite directions. The transmission member 53 is disposed inside the rotating drum 51 and is used to transmit the downward force of the gripper 32 to the rotating drum 51 to drive the rotating drum 51 to rotate.

[0045] In this embodiment, the rotation axis of the rotating drum 51 extends vertically, and the push rods 52 are located on both sides of the rotating drum 51, corresponding to the swing arms 213 on both sides of the rotating drum 51. The push rods 52 on both sides of the rotating drum 51 are at the same height so that the ends of the push rods 52 away from the rotating drum 51 can abut the lower ends of the swing arms 213. The transmission component 53 is located at the upper end of the rotating drum 51 and is used to transmit the downward force of the gripper 32 on the robotic arm 31 to the rotating drum 51 through the transmission component 53, so that after the rotating drum 51 rotates, it drives the two swing arms 213 to rotate in opposite directions through the push rods 52, thereby driving the box body 211 to rotate in opposite directions, realizing the torque test of the dumbbell sample 6. It should be noted that when performing torque testing on dumbbell sample 6, since the ball of dumbbell sample 6 is clamped in the housing 211, the frictional loss between the housing 211 and the ball of dumbbell sample 6 can also be tested by swinging the housing 211 in the opposite direction, thereby measuring the wear performance of dumbbell sample 6.

[0046] In some embodiments, the end of the push rod 52 away from the rotating cylinder 51 is detachably connected to a push block 521. The push block 521 is replaceable so that the corresponding push block 521 can be replaced according to the magnitude of the tested torque, so that the swing rod 213 can be pushed by push blocks 521 of different sizes at an adjustable swing angle.

[0047] In some embodiments, the transmission member 53 includes a receiving platform 531, a transmission rod 532, and a spring 533. The receiving platform 531 is used to abut against the gripper 32 below the robotic arm 31. The transmission rod 532 is connected to the bottom wall of the receiving platform 531 and extends downward. The spring 533 is disposed at the end of the transmission rod 532 away from the receiving platform 531. The rotating drum 51 is provided with a groove 511 for the extension and retraction of the spring 533 and the sliding of the transmission rod 532. The groove 511 extends through the bottom of the rotating drum 51. The end of the spring 533 away from the transmission rod 532 is disposed on the bottom wall of the housing 21 exposed by the groove 511, and the elastic force of the spring 533 acts on the transmission rod 532. A pair of abutment blocks 534 are provided at the lower end of the transmission rod 532, and a pair of inclined wedges 512 are provided on the inner wall of the rotating drum 51. The inclined surface at the top of the inclined wedge 512 abuts against the abutment blocks 534. The abutment blocks 534 are used to abut the inclined wedges 512 to rotate and drive the rotating drum 51 to rotate.

[0048] In this embodiment, the length direction of the receiving platform 531 is perpendicular to the length direction of the transmission rod 532, so that the receiving platform 531 can bear the downward force of the gripper 32 at the lower end of the robotic arm 31. The upper end of the transmission rod 532 is connected to the receiving platform 531, and the lower end of the transmission rod 532 is connected to the spring 533. The lower end of the transmission rod 532 and the spring 533 slide together into the slide groove 511, so as to drive the abutment blocks 534 at both ends of the transmission rod 532 to slide up and down in the rotating cylinder 51. The surface of the abutment block 534 is arc-shaped, and the surface of the upper end of the wedge 512 is inclined downward, so that after the abutment block 534 slides against the inclined surface of the wedge 512, it abuts the wedge 512 to rotate, thereby driving the rotating cylinder 51 to rotate.

[0049] In some embodiments, the inclined surface at the top of the wedge 512 is connected to the surface of the rotating drum 51 where the wedge 512 is located. It should be noted that the abutment block 534 is symmetrically arranged along the length direction of the transmission rod 532. The abutment block 534 cannot slide within the groove 511. When the abutment block 534 is connected to the surface of the rotating drum 51 and the wedge 512, the transmission rod 532 slides down to its maximum position. At this time, the abutment block 534 has abutted the wedge 512 to rotate to its maximum angle.

[0050] In some embodiments, a limiting disc 535 is provided on the transmission rod 532. When the limiting disc 535 abuts against the top of the wedge 512, the abutting block 534 abuts against the surface of the rotating drum 51 where the wedge 512 is located. The abutting disc 535 and the top of the wedge 512 protect the abutting block 534 and reduce collision damage between the abutting block 534 and the rotating drum 51. On the other hand, the limiting disc 535 and the abutting block 534 provide double restriction on the transmission rod 532 in the downward position, which helps to improve the accuracy of controlling the rotation position of the wedge 512 driving the rotating drum 51 and the push rod 52.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A performance testing device for polyurethane waterproof coatings, wherein the polyurethane waterproof coating is in the form of a dumbbell, characterized in that, The device includes: Testing base; The testing box is mounted on the testing base. A robotic arm, rotatably mounted on one side of the detection base, is used to grip the dumbbell-shaped sample; The testing box includes a box body and a box cover hinged to the box body. An ultraviolet lamp and a heating lamp are provided at the bottom of the box cover. A housing is arranged side by side inside the box body below the ultraviolet lamp and the heating lamp. The housing is for the spherical bodies at both ends of the dumbbell-shaped sample to be inserted. A clearance groove is provided on the side wall of the housing body. The clearance groove is used for the robotic arm to grip the dumbbell-shaped sample, insert it into the housing, and continue to rotate downwards.

2. The apparatus according to claim 1, characterized in that, The clearance groove penetrates the top wall of the box to form a clearance groove opening. The box cover covers the clearance groove opening on the box body. Even with the box cover covering the box body, the robotic arm can still rotate up and down inside the box body through the clearance groove.

3. The apparatus according to claim 1, characterized in that, The heating lamp and the ultraviolet lamp are arranged side by side, with a pair of ultraviolet lamps and the heating lamp located between the pair of ultraviolet lamps. The length direction of the ultraviolet lamp and the heating lamp is the same as the length direction of the dumbbell-shaped design.

4. The apparatus according to claim 1, characterized in that, The robotic arm includes a robotic arm and a pair of grippers. The rotation axis of the grippers is parallel to the extension line of the gripper's handle portion. The grippers grasp the dumbbell-shaped handle portion, and the robotic arm rotates within the relief groove.

5. The apparatus according to claim 4, characterized in that, A swing arm is fixed at the bottom of the box body, and a rotating column is rotatably mounted on the swing arm. The end of the rotating column away from the swing arm is rotatably connected to the inner wall of the box body. A drive assembly is provided inside the box body to drive the end of the swing arm away from the box body to rotate. The drive assembly is located between a pair of swing arms and is used to drive the swing arms to swing in opposite directions.

6. The apparatus according to claim 5, characterized in that, The gripper on the robotic arm is in an open state after releasing the dumbbell shape, and the gripper located below the dumbbell shape rotates to a vertically downward direction. The gripper below the dumbbell shape is used to activate the drive assembly to drive the swing arm to rotate in the opposite direction.

7. The apparatus according to claim 5, characterized in that, The driving component includes: A rotating cylinder is rotatably mounted on the bottom wall of the box body and located between a pair of swing arms; Push rods are disposed on both sides of the circumferential wall of the rotating cylinder and are used to push the pair of swing rods to rotate in opposite directions; A transmission component, disposed inside the rotating drum, is used to transmit the downward force of the gripper to the rotating drum to drive the rotating drum to rotate.

8. The apparatus according to claim 7, characterized in that, The transmission component includes: A receiving platform is used to abut against the gripper below the robotic arm; The transmission rod extends downward from the bottom wall of the receiving platform; A spring is disposed at the end of the transmission rod away from the receiving platform; The rotating drum has a groove inside for the extension and retraction of the spring and the sliding of the transmission rod. The groove passes through the bottom of the rotating drum. The end of the spring away from the transmission rod is located on the bottom wall of the box exposed by the groove. The spring force acts on the transmission rod. The lower end of the transmission rod is provided with a pair of abutment blocks, and the inner wall of the rotating drum is provided with a pair of wedges. The inclined surface at the top of the wedges abuts against the abutment blocks. The abutment blocks are used to abut the wedges to rotate and drive the rotating drum to rotate.

9. The apparatus according to claim 8, characterized in that, The inclined surface at the top of the wedge is connected to the surface of the rotating drum where the wedge is located.

10. The apparatus according to claim 8, characterized in that, A limiting disc is provided on the transmission rod. When the limiting disc abuts against the top of the wedge, the abutting block abuts against the surface of the rotating drum where the wedge is located.

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