Low-temperature testing machine for thermoplastic polyolefin waterproof coiled material

Abstract

The invention relates to the technical field of waterproof coiled material detection, in particular to a thermoplastic polyolefin waterproof coiled material low-temperature testing machine which comprises an operation table, a first sealing groove is formed in the side wall of the top end of the operation table, and a second sealing groove is formed in the side wall of the bottom end of the operation table. A cleaning mechanism for cleaning the surface of the waterproof coiled material sample is arranged on the side wall of the center of the operation table, and a gas transmission mechanism for fixing the waterproof coiled material sample is arranged on the side wall of the top end of the operation table. A seventh electric sliding block compresses a first elastic assembly to accumulate energy and then instantly releases the energy, a steel ball is driven to impact a sample, an acceleration sensor records impact force in real time, it is ensured that the steel ball perpendicularly acts on the center of the sample, and the edge effect caused by traditional manual positioning is eliminated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waterproofing membrane detection, in particular to a low-temperature testing machine for thermoplastic polyolefin waterproofing membrane. BACKGROUND

[0002] Thermoplastic polyolefin waterproofing membrane is widely used in waterproofing scenes such as building roofs and underground engineering due to its strong weather resistance and excellent flexibility. In cold regions or low-temperature construction environments, thermoplastic polyolefin waterproofing membrane is prone to puncture damage due to low-temperature embrittlement, which may cause leakage risks. Therefore, its low-temperature puncture resistance is one of the core quality indicators.

[0003] In the prior art, when testing the low-temperature puncture resistance of thermoplastic polyolefin waterproofing membrane, a sensor is not used for control, and a weight or a manual lever is used for loading. The control precision of the puncture force is low, and the loading rate is unstable, resulting in poor repeatability of test results for the same batch of samples. In addition, impurities such as dust and debris may be attached to the surface of the sample, which may form a "raised support" at the puncture point. When the steel ball is loaded vertically, the dust particles may cause the local pressure to increase instantaneously, causing the membrane to break at the dust contact point in advance, which may misjudge the insufficient puncture resistance of the material itself. Local stress concentration occurs during puncture, resulting in distorted test results. Furthermore, the sample needs to be manually removed after puncture, and a magnifying glass is used to observe whether it is penetrated or cracked. Moreover, when dust covers the surface of the puncture point, it may block the small penetrating holes, making it easy to miss the small pinholes.

[0004] To solve the above problems, the present application provides a low-temperature testing machine for thermoplastic polyolefin waterproofing membrane. SUMMARY

[0005] The main purpose of the present application is to provide a low-temperature testing machine for thermoplastic polyolefin waterproofing membrane, which can effectively solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows:

[0007] A low-temperature testing machine for thermoplastic polyolefin waterproofing membrane, comprising an operation table, a first sealing groove is formed in the top end side wall of the operation table, a second sealing groove is formed in the bottom end side wall of the operation table, a cleaning mechanism for cleaning the surface of the waterproofing membrane sample is arranged on the center side wall of the operation table, a gas conveying mechanism for fixing the waterproofing membrane sample is arranged on the top end side wall of the operation table, two second electric telescopic rods are arranged on the bottom end side wall of the operation table, a connecting plate is arranged at the telescopic end of each second electric telescopic rod, a first sealing shell is fixedly connected to the opposite end side wall of the connecting plate, and a puncture mechanism for testing the puncture resistance of the waterproofing membrane sample is arranged on the inner side wall of the first sealing shell.

[0008] Preferably, the cleaning mechanism comprises a first notch in the side wall of the operating table, two first electric sliding grooves are arranged in the inner side wall of the first notch, two first electric sliding blocks are slidably connected to the inner side wall of the first electric sliding grooves, one end of the two first electric sliding blocks opposite to each other is fixedly connected to the same first moving plate, a hole is arranged in the bottom end side wall of the first moving plate, and a third electric telescopic rod is fixedly connected to the inner side wall of the hole.

[0009] Preferably, the cleaning mechanism further comprises a dust collection box fixedly connected to the side wall of the operating table, a drawer is detachably connected to one end of the dust collection box, a first air pump is fixedly connected to the other end of the dust collection box, a plurality of dust suction holes are arranged in the outer side wall of the cleaning rod, a telescopic pipe is rotatably connected to the other end of the cleaning rod penetrating through the U-shaped plate, and the other end of the telescopic pipe is fixedly connected to the output end of the first air pump penetrating through the operating table.

[0010] Preferably, the gas conveying mechanism comprises a fixing frame arranged at the top end side wall of the operating table, a second electric sliding groove is arranged at one end of the two fixing frames opposite to each other, a second electric sliding block is slidably connected to the inner side wall of the second electric sliding groove, one end of the two second electric sliding blocks opposite to each other is fixedly connected to the same second sealing shell, a second sealing strip is arranged at the bottom end side wall of the second sealing shell, an air inlet pipe is arranged at the top end side wall of the second sealing shell, two third electric sliding grooves are arranged in the inner side wall of the second sealing shell, a third electric sliding block is slidably connected to the inner side wall of the third electric sliding groove, and one end of the two third electric sliding blocks opposite to each other is fixedly connected to the same first guide plate.

[0011] Preferably, the fourth electric sliding block is provided with a second guide plate at the bottom end side wall, a fourth electric telescopic rod is arranged at the bottom end side wall of the second guide plate, a first sleeve is arranged at the telescopic end of the fourth electric telescopic rod, a rubber ring is arranged at the bottom end side wall of the first sleeve, a plurality of air holes are arranged in the outer side wall of the first sleeve, a second sleeve is fixedly connected to the outer side wall of the first sleeve, a second air pump is fixedly connected to one side wall of the second guide plate, a gas conveying pipe is arranged at the output end of the second air pump, and the other end of the gas conveying pipe is fixedly communicated with the side wall of the second sleeve.

[0012] Preferably, the puncture mechanism includes fifth electric sliding grooves opened in the inner side walls of the first sealing shell, fifth electric sliding blocks slidingly connected to the inner side walls of the two fifth electric sliding grooves, a third guide plate fixedly connected to the opposite ends of the two fifth electric sliding blocks, a sixth electric sliding groove opened in the top end side wall of the third guide plate, a sixth electric sliding block slidingly connected to the inner side wall of the sixth electric sliding groove, a fourth guide plate provided on the top end side wall of the sixth electric sliding block, a fifth electric telescopic rod provided on the top end side wall of the fourth guide plate, a third sleeve provided on the fifth electric telescopic rod, a rubber ring provided on the top end side wall of the third sleeve, and a detection mechanism for detecting the puncture.

[0013] Preferably, seventh electric sliding grooves are opened in the inner side walls of the third sleeve, seventh electric sliding blocks are slidingly connected to the inner side walls of the two seventh electric sliding grooves, acceleration sensors are provided on the top end side walls of the two seventh electric sliding blocks, a hitting plate is fixedly connected to the opposite ends of the two seventh electric sliding blocks, a plurality of first elastic components are fixedly connected to the bottom end inner side wall of the third sleeve, the top ends of the first elastic components are fixedly connected to the bottom end of the hitting plate, and a steel ball is provided on the top end side wall of the hitting plate.

[0014] Preferably, eighth electric sliding grooves are opened in the outer side walls of the third sleeve, eighth electric sliding blocks are slidingly connected to the inner side walls of the two eighth electric sliding grooves, second moving plates are fixedly connected to one end of the two eighth electric sliding blocks, a sixth electric telescopic rod is fixedly connected to one end of the second moving plate, a rotating plate is provided on the sixth electric telescopic rod and penetrates through the second moving plate, a second motor is provided on one side wall of the rotating plate, a rotating block is provided on the output end of the second motor and penetrates through the rotating plate, the outer side wall of the rotating block is rotationally connected to the inner side wall of the rotating plate, a vacuum chamber is provided on one end side wall of the rotating block, a third air pump is provided on one end of the vacuum chamber, and a suction disc is provided on one side wall of the acceleration sensor.

[0015] Preferably, the detection mechanism includes a seventh electric telescopic rod fixedly connected to the top end side wall of the fourth guide plate, a fourth sleeve provided on the seventh electric telescopic rod, a rubber ring provided on the top end side wall of the fourth sleeve, a plurality of gas sensors provided on the inner bottom end of the fourth sleeve, an eighth electric telescopic rod provided on the inner bottom end of the fourth sleeve, a fifth sleeve provided on the eighth electric telescopic rod, a first distance sensor provided on the inner bottom end of the fifth sleeve, a plurality of second elastic components provided on the inner bottom end side wall of the fifth sleeve, a measuring plate fixedly connected to the other ends of the second elastic components, a measuring probe provided on the top end side wall of the measuring plate, and a second distance sensor provided on the bottom end side wall of the measuring plate.

[0016] Preferably, the operating table top end side wall is provided with two L-shaped support frames, the top end side wall of each of the two L-shaped support frames is provided with a first electric telescopic rod, the telescopic end of the first electric telescopic rod is provided with a clamping plate, the top end side wall of the first sealing shell is provided with a first sealing strip, the bottom end side wall of the first sealing shell is provided with a hole, and the inner side wall of the hole is fixedly connected with a one-way valve.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] 1. The low-temperature testing machine for the thermoplastic polyolefin waterproof roll material, the cleaning mechanism is driven to rotate by the first motor, the cleaning strip can remove dust, fibers and other micron-level impurities on the surface of the sample in all directions, the first air pump is started synchronously, the impurities are sucked into the dust collection box through the dust suction holes on the surface of the cleaning rod through the telescopic pipe, dust covering is avoided, the L-shaped support frames on the two sides of the operating table are driven to press down the clamping plate through the first electric telescopic rod, a constant pressure is applied to the edge of the sample, the sample is fixed, and it is ensured that the sample is flat and wrinkle-free, the problem that the edge supporting force interferes with the puncture result when manual alignment is solved, the second sealing shell and the first sealing shell are embedded in the sealing groove through the sealing strip, a closed test cavity is formed, low-temperature nitrogen is introduced into the cavity in cooperation with the external refrigeration device, and the temperature difference at different positions in the cavity is reduced.

[0019] 2. The low-temperature testing machine for the thermoplastic polyolefin waterproof roll material, the seventh electric sliding block compresses the first elastic component to accumulate energy and then releases the energy instantaneously, drives the steel ball to impact the sample, the acceleration sensor records the impact force in real time, and it is ensured that the steel ball acts vertically on the center of the sample, the edge effect caused by traditional manual positioning is eliminated, the second air pump is used to introduce gas into the first sleeve, if there is a hole at the puncture position, the gas enters the fourth sleeve through the sample, and the gas pressure change can be detected by the gas sensor, the problem that a small pinhole is missed in visual observation is solved, if the sample is not penetrated, the eighth electric telescopic rod pushes the measurement probe to contact the puncture point, the displacement difference between the first distance sensor and the second distance sensor can be used to accurately calculate the crack depth, and the buffer effect of the second elastic component is combined to ensure that the probe is in close contact with the surface of the sample. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0021] Figure 2 It is a schematic diagram of the overall structure of the present application;

[0022] Figure 3 It is a schematic diagram of the local structure of the cleaning mechanism of the present application;

[0023] Figure 4 It is a schematic diagram of the local structure of the cleaning mechanism of the present application;

[0024] Figure 5A partial structure sectional view of the gas conveying mechanism of the application;

[0025] Figure 6 A partial structure sectional view of the puncture mechanism of the application;

[0026] Figure 7 A partial structure sectional view of the puncture mechanism of the application;

[0027] Figure 8 A partial structure sectional view of the detection mechanism of the application.

[0028] In the figure: 1, operation table; 2, cleaning mechanism; 3, gas conveying mechanism; 4, puncture mechanism; 5, detection mechanism; 12, first sealing groove; 13, second sealing groove; 14, first sealing strip; 15, L-shaped support frame; 16, first electric telescopic rod; 17, clamping plate; 18, second electric telescopic rod; 19, connecting plate; 191, first sealing shell; 192, one-way valve; 21, first notch; 22, first electric sliding groove; 23, first electric sliding block; 24, first moving plate; 25, third electric telescopic rod; 26, U-shaped plate; 27, cleaning rod; 28, cleaning strip; 29, dust suction hole; 291, first transmission strip; 292, first groove; 293, first motor; 294, telescopic pipe; 295, first air pump; 296, dust collection box; 297, drawer; 31, fixing frame; 32, second electric sliding groove; 33, second electric sliding block; 34, second sealing shell; 35, second sealing strip; 36, third electric sliding groove; 37, third electric sliding block; 38, first guide plate; 39, fourth electric sliding groove; 391, fourth electric sliding block; 392, second guide plate; 393, fourth electric telescopic rod; 394, first sleeve; 395, second sleeve; 396, air hole; 397, gas conveying pipe; 398, second air pump; 399, air inlet pipe; 41, fifth electric sliding groove; 42, fifth electric sliding block; 43, third guide plate; 44, sixth electric sliding groove; 45, sixth electric sliding block; 46, fourth guide plate; 47, fifth electric telescopic rod; 48, third sleeve; 49, seventh electric sliding groove; 491, seventh electric sliding block; 492, beating plate; 493, first elastic component; 494, steel ball; 495, eighth electric sliding groove; 496, eighth electric sliding block; 497, second moving plate; 498, sixth electric telescopic rod; 499, rotating plate; 4991, second motor; 4992, rotating block; 4993, vacuum chamber; 4994, third air pump; 4995, suction disc; 4996, acceleration sensor; 51, seventh electric telescopic rod; 52, fourth sleeve; 53, gas sensor; 54, eighth electric telescopic rod; 55, fifth sleeve; 56, second elastic component; 57, first distance sensor; 58, measuring plate; 59, second distance sensor; 591, measuring probe. DETAILED DESCRIPTION

[0029] The technical means, creative features, purposes and effects of the present application are easy to understand by combining the specific embodiments below.

[0030] As shown in Figure 1 - Figure 8 A low-temperature tester for thermoplastic polyolefin waterproofing membrane, including an operating table 1, the top end of the operating table 1 is provided with a first sealing groove 12, the bottom end of the operating table 1 is provided with a second sealing groove 13, the center side wall of the operating table 1 is provided with a cleaning mechanism 2 for cleaning the surface of the waterproofing membrane sample, the top end of the operating table 1 is provided with a gas conveying mechanism 3 for fixing the waterproofing membrane sample, the bottom end of the operating table 1 is provided with two second electric telescopic rods 18, the telescopic ends of the two second electric telescopic rods 18 are provided with connecting plates 19, the opposite end of the connecting plate 19 is fixedly connected with the same first sealing shell 191, and the inner side wall of the first sealing shell 191 is provided with a puncture mechanism 4 for testing the puncture resistance of the waterproofing membrane sample.

[0031] In this embodiment, the cleaning mechanism 2 includes a first slot 21 formed in the center side wall of the operating table 1, two first electric sliding grooves 22 are formed in the inner side wall of the first slot 21, two first electric sliding blocks 23 are slidably connected to the inner side wall of the two first electric sliding grooves 22, the opposite end of the two first electric sliding blocks 23 is fixedly connected with the same first moving plate 24, a hole is formed in the bottom end side wall of the first moving plate 24, and a third electric telescopic rod 25 is fixedly connected to the inner side wall of the hole, a U-shaped plate 26 is provided at the telescopic end of the third electric telescopic rod 25, the inner walls of the two ends of the U-shaped plate 26 are rotatably connected with the same cleaning rod 27, a plurality of cleaning strips 28 are fixedly connected to the outer side wall of the cleaning rod 27, a first motor 293 is fixedly connected to the bottom end side wall of the U-shaped plate 26, a first recess 292 is formed in the top end side wall of the U-shaped plate 26, and one end of the cleaning rod 27 penetrates through the first recess 292 and is rotatably connected with the inner side wall of the first recess 292, and the cleaning rod 27 and the output end of the first motor 293 are rotatably connected with the same first transmission strip 291 through a belt pulley.

[0032] Specifically, the first electric sliding groove 22 drives the first electric sliding block 23 to move, drives the first moving plate 24 to the lower side of the sample, the third electric telescopic rod 25 is elongated, the U-shaped plate 26 is raised, until the cleaning strip 28 contacts the surface of the sample, the first motor 293 is started, the cleaning rod 27 is rotated through the first transmission strip 291, and the cleaning strip 28 cleans the surface of the sample in all directions, removing dust, debris and other impurities.

[0033] In the embodiment, the cleaning mechanism 2 further comprises a dust collection box 296 fixedly connected to one side wall of the operation table 1, one end of the dust collection box 296 is detachably connected with a drawer 297, the other end of the dust collection box 296 is fixedly connected with a first air pump 295, a plurality of dust suction holes 29 are formed in the outer side wall of the cleaning rod 27, the other end of the cleaning rod 27 penetrates through the U-shaped plate 26 and is rotationally connected with an extension tube 294, the other end of the extension tube 294 penetrates through the operation table 1 and is fixedly connected with the output end of the first air pump 295.

[0034] Specifically, the first air pump 295 is started, the impurities generated during cleaning are sucked into the dust collection box 296 through the dust suction holes 29 on the surface of the cleaning rod 27, and finally collected in the drawer 297, facilitating subsequent cleaning.

[0035] In the embodiment, the gas conveying mechanism 3 comprises a fixed frame 31 arranged at the top end of the operation table 1, the opposite ends of the two fixed frames 31 are each provided with a second electric sliding groove 32, the inner side walls of the two second electric sliding grooves 32 are each slidably connected with a second electric sliding block 33, the opposite ends of the two second electric sliding blocks 33 are fixedly connected with the same second sealing shell 34, the bottom end of the second sealing shell 34 is provided with a second sealing strip 35, the top end of the second sealing shell 34 is provided with an air inlet pipe 399, the inner side wall of the second sealing shell 34 is provided with two third electric sliding grooves 36, the inner side walls of the two third electric sliding grooves 36 are slidably connected with third electric sliding blocks 37, the opposite ends of the two third electric sliding blocks 37 are fixedly connected with the same first guide plate 38, the bottom end of the first guide plate 38 is provided with a fourth electric sliding groove 39, and the inner side wall of the fourth electric sliding groove 39 is slidably connected with a fourth electric sliding block 391.

[0036] Specifically, the second electric sliding groove 32 drives the second electric sliding block 33 to move downward, so that the second sealing shell 34 covers above the sample, the second sealing strip 35 at the bottom end is embedded in the first sealing groove 12, forming an upper seal, the third electric sliding groove 36 drives the third electric sliding block 37 to move, driving the first guide plate 38 to adjust the position horizontally in the sealing cavity, and the fourth electric sliding groove 39 drives the fourth electric sliding block 391 to move, driving the second guide plate 392 and the first sleeve 394 to be located directly above the puncture position of the sample test area.

[0037] In the embodiment, the bottom end of the fourth electric sliding block 391 is provided with a second guide plate 392, the bottom end of the second guide plate 392 is provided with a fourth electric telescopic rod 393, the telescopic end of the fourth electric telescopic rod 393 is provided with a first sleeve 394, the bottom end of the first sleeve 394 is provided with a rubber ring, a plurality of air holes 396 are formed in the outer side wall of the first sleeve 394, the outer side wall of the first sleeve 394 is fixedly connected with a second sleeve 395, one side wall of the second guide plate 392 is fixedly connected with a second air pump 398, the output end of the second air pump 398 is provided with a gas conveying pipe 397, and the other end of the gas conveying pipe 397 is fixedly communicated with the side wall of the second sleeve 395.

[0038] Specifically, the fourth electric telescopic rod 393 is extended to push the first sleeve 394 to descend, when the bottom end of the first sleeve 394 is slightly higher than the top end of the sample, the fourth electric telescopic rod 393 stops running, then the second air pump 398 is started to make the gas pass into the second sleeve 395 through the gas inlet pipe 399, and then pass into the first sleeve 394 through the plurality of gas holes 396.

[0039] In the embodiment, the puncture mechanism 4 comprises fifth electric sliding grooves 41 formed in the inner side walls of the first sealing shell 191, fifth electric sliding blocks 42 slidably connected to the inner side walls of the two fifth electric sliding grooves 41, a third guide plate 43 fixedly connected to the opposite ends of the two fifth electric sliding blocks 42, a sixth electric sliding groove 44 formed in the top end side wall of the third guide plate 43, a sixth electric sliding block 45 slidably connected to the inner side wall of the sixth electric sliding groove 44, a fourth guide plate 46 provided on the top end side wall of the sixth electric sliding block 45, a fifth electric telescopic rod 47 provided on the top end side wall of the fourth guide plate 46, a third sleeve 48 provided on the telescopic end of the fifth electric telescopic rod 47, a rubber ring provided on the top end side wall of the third sleeve 48, and a detection mechanism 5 provided on the top end side wall of the fourth guide plate 46 to detect the puncture position.

[0040] Specifically, the fifth electric sliding grooves 41 drive the fifth electric sliding blocks 42 to move, the third guide plate 43 is adjusted in the horizontal direction, the sixth electric sliding groove 44 drives the sixth electric sliding block 45 to move, the fourth guide plate 46 is further accurately positioned, the third sleeve 48 is located directly below the sample test area, the fifth electric telescopic rod 47 is extended to push the third sleeve 48 to rise, and the rubber ring at the top end of the third sleeve 48 is in contact with the bottom end side wall of the sample.

[0041] In the embodiment, two seventh electric sliding grooves 49 are formed in the inner side wall of the third sleeve 48, seventh electric sliding blocks 491 are slidably connected to the inner side walls of the two seventh electric sliding grooves 49, acceleration sensors 4996 are provided on the top end side walls of the two seventh electric sliding blocks 491, a striking plate 492 is fixedly connected to the opposite ends of the two seventh electric sliding blocks 491, a plurality of first elastic components 493 are fixedly connected to the bottom end of the inner side wall of the third sleeve 48, the top ends of the first elastic components 493 are fixedly connected to the bottom end of the striking plate 492, and a steel ball 494 is provided on the top end side wall of the striking plate 492.

[0042] Specifically, the seventh electric sliding grooves 49 drive the seventh electric sliding blocks 491 to descend to compress the first elastic components 493, and after accumulating energy, the seventh electric sliding grooves 49 stop running, so that the striking plate 492 is quickly released, the steel ball 494 is driven by the striking plate 492 to impact and puncture the sample, and the acceleration sensors 4996 record the impact force and speed at the puncture moment.

[0043] In the embodiment, the outer side wall of the third sleeve 48 is provided with two eighth electric sliding grooves 495, the inner side walls of the two eighth electric sliding grooves 495 are both slidably connected with eighth electric sliding blocks 496, one end of each of the two eighth electric sliding blocks 496 is fixedly connected with a second moving plate 497, one end of the second moving plate 497 is fixedly connected with a sixth electric telescopic rod 498, the telescopic end of the sixth electric telescopic rod 498 is provided with a rotating plate 499 penetrating through the second moving plate 497, one side wall of the rotating plate 499 is provided with a second motor 4991, the output end of the second motor 4991 is provided with a rotating block 4992 penetrating through the rotating plate 499, the outer side wall of the rotating block 4992 is rotatably connected with the inner side wall of the rotating plate 499, one end side wall of the rotating block 4992 is provided with a vacuum chamber 4993, one end of the vacuum chamber 4993 is provided with a third air pump 4994, one side wall of the acceleration sensor 4996 is provided with a suction disc 4995.

[0044] Specifically, the sixth electric telescopic rod 498 is started to drive the rotating plate 499 to move to the bottom end of the outer side wall of the steel ball 494, then the second motor 4991 drives the rotating block 4992 to rotate, so that the two suction discs 4995 are both in contact with the obliquely lower side wall of the steel ball 494, the third air pump 4994 is started to adsorb the steel ball 494 through the vacuum chamber 4993 and the suction disc 4995, then the eighth electric sliding groove 495 is started to drive the eighth electric sliding block 496 to reciprocating move, so as to drive the steel ball 494 to reciprocating rotate, thereby loosening the contact between the steel ball 494 and the sample.

[0045] In the embodiment, the detection mechanism 5 comprises a seventh electric telescopic rod 51 fixedly connected with the top end side wall of the fourth guide plate 46, the telescopic end of the seventh electric telescopic rod 51 is provided with a fourth sleeve 52, the top end side wall of the fourth sleeve 52 is provided with a rubber ring, the inner bottom end of the fourth sleeve 52 is provided with a plurality of gas sensors 53, the inner bottom end of the fourth sleeve 52 is provided with an eighth electric telescopic rod 54, the telescopic end of the eighth electric telescopic rod 54 is provided with a fifth sleeve 55, the inner bottom end of the fifth sleeve 55 is provided with a first distance sensor 57, the inner bottom end of the fifth sleeve 55 is provided with a plurality of second elastic components 56, the other end of the plurality of second elastic components 56 is fixedly connected with a same measuring plate 58, the top end side wall of the measuring plate 58 is provided with a measuring probe 591, and the bottom end side wall of the measuring plate 58 is provided with a second distance sensor 59.

[0046] Specifically, if the gas sensor 53 detects an increase in the amount of gas, a penetrating hole exists at the puncture site, indicating that the sample's puncture resistance is unqualified. If the gas sensor 53 does not detect an increase in the amount of gas, a penetrating hole does not exist at the puncture site, indicating that the sample's puncture resistance is qualified. If there is no penetrating hole, the eighth electric telescopic rod 54 is extended, causing the fifth sleeve 55 to rise. After the measurement probe 591 contacts the top end of the puncture hole, the measurement probe 591 no longer moves upward with the second distance sensor 59, but the first distance sensor 57 continues to move upward and eventually contacts the second distance sensor 59. Subsequently, the eighth electric telescopic rod 54 stops running, and the depth of the puncture hole is calculated by the difference between the second distance sensor 59 and the first distance sensor 57. The second elastic component 56 ensures that the probe is in close contact with the surface of the sample.

[0047] In this embodiment, the top side wall of the operating platform 1 is provided with two L-shaped support frames 15, and the top side wall of each L-shaped support frame 15 is provided with a first electric telescopic rod 16. The telescopic end of the first electric telescopic rod 16 is provided with a clamping plate 17. The top side wall of the first sealing shell 191 is provided with a first sealing strip 14, and the bottom side wall of the first sealing shell 191 is provided with a hole. The inner side wall of the hole is fixedly connected with a one-way valve 192.

[0048] Specifically, by extending the two first electric telescopic rods 16 on the L-shaped support frames 15 on both sides of the operating platform 1, the clamping plate 17 is driven to press down and tightly fix the edges of the sample, preventing displacement during testing.

[0049] It needs to be explained that the present application is a kind of low temperature testing machine for thermoplastic polyolefin waterproofing membrane, the user cuts the thermoplastic polyolefin waterproofing membrane into the sample of size, removes the obvious impurities on the surface, places in the center test area of operation table 1, ensures that the sample is flat and wrinkle-free, then, through the elongation of the two first electric telescopic rods 16 on the L-shaped support frame 15 on both sides of the operation table 1, the clamping plate 17 is driven to press down, the edge of the sample is pressed and fixed, to prevent displacement during testing, then, the first electric sliding groove 22 drives the first electric sliding block 23 to move, drives the first moving plate 24 to the lower side of the sample, the third electric telescopic rod 25 is elongated, the U-shaped plate 26 is raised until the cleaning strip 28 contacts the surface of the sample, the first motor 293 is started, the cleaning rod 27 is driven to rotate through the first transmission bar 291, the cleaning strip 28 sweeps the surface of the sample in all directions, removes dust, debris and other impurities, the first air pump 295 is started at the same time, the impurities generated by cleaning are sucked into the dust collection box 296 through the dust suction hole 29 on the surface of the cleaning rod 27 through the telescopic pipe 294, and finally collected in the drawer 297, which is convenient for subsequent cleaning, after cleaning, the third electric telescopic rod 25 is retracted, the first electric sliding block 23 drives the first moving plate 24 to return to the initial position, the first motor 293 and the first air pump 295 are turned off, the second electric sliding groove 32 drives the second electric sliding block 33 to move downward, so that the second sealing shell 34 covers the upper side of the sample, the second sealing strip 35 at the bottom end is embedded in the first sealing groove 12, forming an upper seal, the second electric telescopic rod 18 is retracted, the connecting plate 19 and the first sealing shell 191 are pulled up, the first sealing strip 14 at the top end is embedded in the second sealing groove 13, and the second sealing shell 34 is formed together to form a closed low temperature test cavity, the external cooling device is connected through the gas inlet pipe 399, so that the low temperature gas is introduced, the temperature in the sealed cavity is reduced to the set value, and the one-way valve 192 is opened to balance the gas pressure in the cavity.

[0050] The fifth electric sliding slot 41 drives the fifth electric sliding block 42 to move, and drives the third guide plate 43 to adjust the position in the horizontal direction. The sixth electric sliding slot 44 drives the sixth electric sliding block 45 to move, and drives the fourth guide plate 46 to further accurately position, so that the third sleeve 48 is located directly below the sample test area. The fifth electric telescopic rod 47 is elongated, pushes the third sleeve 48 to rise, and makes the rubber ring at the top end of the third sleeve 48 contact the sidewall at the bottom end of the sample. The seventh electric sliding slot 49 drives the seventh electric sliding block 491 to descend, compresses the first elastic component 493, and after accumulating energy, the seventh electric sliding slot 49 stops running, so that the hitting plate 492 is quickly released. The steel ball 494 impacts and penetrates the sample through the hitting plate 492. The acceleration sensor 4996 records the impact force and speed at the penetration moment. If the steel ball 494 is embedded into the bottom end of the sample and does not fall back into the third sleeve 48, the sixth electric telescopic rod 498 is started to push the rotating plate 499 to move to the bottom end of the outer sidewall of the steel ball 494. Then, the second motor 4991 drives the rotating block 4992 to rotate, so that the two suction cups 4995 are in contact with the obliquely lower sidewall of the steel ball 494. The third air pump 4994 is started to adsorb the steel ball 494 through the vacuum chamber 4993 and the suction cup 4995. Then, the eighth electric sliding slot 495 is started to drive the eighth electric sliding block 496 to reciprocatingly move, so as to drive the steel ball 494 to reciprocatingly rotate, so that the contact between the steel ball 494 and the sample is loosened. Then, the third air pump 4994 stops running, and the sixth electric telescopic rod 498 and the second motor 4991 are reset. The steel ball 494 falls back into the third sleeve 48.

[0051] The third electric sliding slot 36 drives the third electric sliding block 37 to move, and the first guide plate 38 is driven to adjust the position in the sealed cavity horizontally. The fourth electric sliding slot 39 drives the fourth electric sliding block 391 to move, and the second guide plate 392 and the first sleeve 394 are located above the puncture position of the sample test area. Then, the fourth electric telescopic rod 393 is extended to push the first sleeve 394 to descend. When the bottom end of the first sleeve 394 is slightly higher than the top end of the sample, the fourth electric telescopic rod 393 stops running. Then, the second air pump 398 is started to make the gas pass into the second sleeve 395 through the gas inlet pipe 399, and then pass into the first sleeve 394 through the plurality of gas holes 396, so as to blow the surface of the sample below the first sleeve 394. Then, the fourth electric telescopic rod 393 is operated again, so that the rubber ring at the bottom end of the first sleeve 394 is in contact with the side wall of the top end of the sample. At the same time, the sixth electric sliding slot 44 drives the sixth electric sliding block 45 to move, so that the fourth sleeve 52 is located below the puncture position of the sample area. The seventh electric telescopic rod 51 is extended to push the fourth sleeve 52 to ascend, so that the rubber ring at the top end of the fourth sleeve 52 is in contact with the side wall of the bottom end of the sample. At this time, the second air pump 398 continues to run. If the gas sensor 53 detects that the gas volume increases, it means that there is a penetrating hole in the puncture position, so that the sample has unqualified puncture resistance. If the gas sensor 53 does not detect that the gas volume increases, it means that there is no penetrating hole in the puncture position, so that the sample has qualified puncture resistance. If there is no penetrating hole, the eighth electric telescopic rod 54 is extended to make the fifth sleeve 55 ascend. After the measurement probe 591 contacts the top end of the puncture hole, the measurement probe 591 and the second distance sensor 59 no longer move upward, and the first distance sensor 57 continues to move upward and finally contacts the second distance sensor 59. Then, the eighth electric telescopic rod 54 stops running. The depth of the puncture hole is calculated by the difference between the second distance sensor 59 and the first distance sensor 57. The second elastic component 56 ensures that the probe is in close contact with the surface of the sample. The control system automatically records the puncture force, the puncture depth, the sealing performance and other data, generates a test report, and finally resets all mechanisms, opens the sealed cavity, takes out the sample, cleans the test area, and completes a single test.

[0052] The basic principles and main features of the present application are shown and described above, and the advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A low-temperature testing machine for thermoplastic polyolefin waterproofing membrane, comprising an operating table (1), characterized in that: The top side wall of the operating platform (1) is provided with a first sealing groove (12), the bottom side wall of the operating platform (1) is provided with a second sealing groove (13), the central side wall of the operating platform (1) is provided with a cleaning mechanism (2) for cleaning the surface of the waterproof coiled material sample, the top side wall of the operating platform (1) is provided with an air supply mechanism (3) for fixing the waterproof coiled material sample, the bottom side wall of the operating platform (1) is provided with two second electric telescopic rods (18), the telescopic ends of the two second electric telescopic rods (18) are both provided with a connecting plate (19), the opposite end side wall of the connecting plate (19) is fixedly connected to the same first sealing shell (191), and the inner side wall of the first sealing shell (191) is provided with a puncture mechanism (4) for puncture-resistant waterproof coiled material sample.

2. The low-temperature testing machine for thermoplastic polyolefin waterproof membrane according to claim 1, characterized in that: The cleaning mechanism (2) comprises a first notch (21) provided on the central side wall of the operating table (1), two first electric slides (22) provided on the inner side wall of the first notch (21), the inner side walls of the two first electric slides (22) are both slidably connected with first electric sliders (23), the opposite ends of the two first electric sliders (23) are fixedly connected with the same first movable plate (24), a hole is provided on the side wall of the bottom end of the first movable plate (24), and a third electric telescopic rod (25) is fixedly connected to the inner side wall of the hole, and a U-shaped plate (26) is provided at the telescopic end of the third electric telescopic rod (25). ), the inner walls at both ends of the U-shaped plate (26) are rotatably connected to the same cleaning rod (27), the outer wall of the cleaning rod (27) is fixedly connected to a plurality of cleaning strips (28), the bottom side wall of the U-shaped plate (26) is fixedly connected to a first motor (293), the top side wall of the U-shaped plate (26) is provided with a first groove (292), one end of the cleaning rod (27) passes through the first groove (292) and is rotatably connected to the inner wall of the first groove (292), and the output end of the cleaning rod (27) and the first motor (293) is rotatably connected to the same first transmission strip (291) through a pulley.

3. The low-temperature testing machine for thermoplastic polyolefin waterproof membrane according to claim 2, characterized in that: The cleaning mechanism (2) further comprises a dust collecting box (296) fixedly connected to a side wall of the operating table (1); one end of the dust collecting box (296) is detachably connected to a drawer (297); the other end of the dust collecting box (296) is fixedly connected to a first air pump (295); a plurality of dust suction holes (29) are provided on the outer wall of the cleaning rod (27); the other end of the cleaning rod (27) passes through the U-shaped plate (26) and is rotatably connected to a telescopic tube (294); the other end of the telescopic tube (294) passes through the operating table (1) and is fixedly connected to the output end of the first air pump (295).

4. The low-temperature testing machine for thermoplastic polyolefin waterproof membrane according to claim 1, characterized in that: The gas transmission mechanism (3) comprises a fixing frame (31) provided on the top side wall of the operating table (1), a second electric slide groove (32) is provided at opposite ends of the two fixing frames (31), a second electric slider (33) is slidably connected to the inner side walls of the two second electric slide grooves (32), a second sealing shell (34) is fixedly connected to the opposite ends of the two second electric sliders (33), a second sealing strip (35) is provided on the bottom side wall of the second sealing shell (34), and the top of the second sealing shell (34) is provided with a second electric slider (33). An air inlet pipe (399) is provided on the side wall, two third electric slide grooves (36) are provided on the inner side wall of the second sealed shell (34), the inner side walls of the two third electric slide grooves (36) are slidably connected to third electric sliders (37), the opposite ends of the two third electric sliders (37) are fixedly connected to the same first guide plate (38), a fourth electric slide groove (39) is provided on the side wall of the bottom end of the first guide plate (38), and the inner side wall of the fourth electric slide groove (39) is slidably connected to a fourth electric slider (391).

5. The low-temperature testing machine for thermoplastic polyolefin waterproof membrane according to claim 4, characterized in that: The bottom side wall of the fourth electric slider (391) is provided with a second guide plate (392), the bottom side wall of the second guide plate (392) is provided with a fourth electric telescopic rod (393), the telescopic end of the fourth electric telescopic rod (393) is provided with a first sleeve (394), the bottom side wall of the first sleeve (394) is provided with a rubber ring, the outer side wall of the first sleeve (394) is provided with a plurality of air holes (396), the outer side wall of the first sleeve (394) is fixedly connected to the second sleeve (395), the side wall of the second guide plate (392) is fixedly connected to the second air pump (398), the output end of the second air pump (398) is provided with an air pipe (397), the other end of the air pipe (397) is fixedly connected to the side wall of the second sleeve (395).

6. The low-temperature testing machine for thermoplastic polyolefin waterproof membrane according to claim 1, characterized in that: The puncture mechanism (4) includes a fifth electric slide groove (41) provided on the inner side wall of the first sealing shell (191), the inner side walls of the two fifth electric slide grooves (41) are both slidably connected with a fifth electric slider (42), the opposite ends of the two fifth electric sliders (42) are fixedly connected with the same third guide plate (43), the top side wall of the third guide plate (43) is provided with a sixth electric slide groove (44), the inner side wall of the sixth electric slide groove (44) is slidably connected with a sixth electric slider (45), the top side wall of the sixth electric slider (45) is provided with a fourth guide plate (46), the top side wall of the fourth guide plate (46) is provided with a fifth electric telescopic rod (47), the telescopic end of the fifth electric telescopic rod (47) is provided with a third sleeve (48), the top side wall of the third sleeve (48) is provided with a rubber ring, and the top side wall of the fourth guide plate (46) is provided with a detection mechanism (5) for detecting the puncture site.

7. The low-temperature testing machine for thermoplastic polyolefin waterproof membrane according to claim 6, characterized in that: The inner wall of the third sleeve (48) is provided with two seventh electric slide grooves (49), the inner walls of the two seventh electric slide grooves (49) are both slidably connected to the seventh electric slider (491), the top side walls of the two seventh electric sliders (491) are both provided with acceleration sensors (4996), the opposite ends of the two seventh electric sliders (491) are fixedly connected to the same striking plate (492), the bottom end of the inner wall of the third sleeve (48) is fixedly connected to a plurality of first elastic components (493), the top ends of the plurality of first elastic components (493) are fixedly connected to the bottom end of the striking plate (492), and the top side wall of the striking plate (492) is provided with a steel ball (494).

8. The low-temperature testing machine for thermoplastic polyolefin waterproof membrane according to claim 7, characterized in that: The outer wall of the third sleeve (48) is provided with two eighth electric slide grooves (495), the inner walls of the two eighth electric slide grooves (495) are slidably connected with the eighth electric slider (496), one end of the two eighth electric sliders (496) is fixedly connected with the second movable plate (497), one end of the second movable plate (497) is fixedly connected with the sixth electric telescopic rod (498), the telescopic end of the sixth electric telescopic rod (498) passes through the second movable plate (497) and is provided with a rotating plate (499). A second motor (4991) is provided on one side wall of the rotating plate (499); an output end of the second motor (4991) passes through the rotating plate (499) and is provided with a rotating block (4992); an outer side wall of the rotating block (4992) is rotatably connected to an inner side wall of the rotating plate (499); a vacuum chamber (4993) is provided on one end side wall of the rotating block (4992); a third air pump (4994) is provided on one end of the vacuum chamber (4993); and a suction cup (4995) is provided on one side wall of the acceleration sensor (4996).

9. The low-temperature testing machine for thermoplastic polyolefin waterproof membrane according to claim 6, characterized in that: The detection mechanism (5) comprises a seventh electric telescopic rod (51) fixedly connected to the top side wall of the fourth guide plate (46); a fourth sleeve (52) is provided at the telescopic end of the seventh electric telescopic rod (51); a rubber ring is provided at the top side wall of the fourth sleeve (52); a plurality of gas sensors (53) are provided at the inner bottom end of the fourth sleeve (52); an eighth electric telescopic rod (54) is provided at the inner bottom end of the fourth sleeve (52); a fifth sleeve (55) is provided at the telescopic end of the eighth electric telescopic rod (54); a first distance sensor (57) is provided at the inner bottom end of the fifth sleeve (55); a plurality of second elastic components (56) are provided at the inner bottom end of the fifth sleeve (55); the other ends of the plurality of second elastic components (56) are fixedly connected to the same measuring plate (58); a measuring probe (591) is provided at the top side wall of the measuring plate (58); and a second distance sensor (59) is provided at the bottom side wall of the measuring plate (58).

10. The low-temperature testing machine for thermoplastic polyolefin waterproof membrane according to claim 1, characterized in that: The top side wall of the operating table (1) is provided with two L-shaped support frames (15), the top side walls of the two L-shaped support frames (15) are both provided with a first electric telescopic rod (16), the telescopic end of the first electric telescopic rod (16) is provided with a clamping plate (17), the top side wall of the first sealing shell (191) is provided with a first sealing strip (14), the bottom side wall of the first sealing shell (191) is provided with a hole, and the inner side wall of the hole is fixedly connected to a one-way valve (192).

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