A device and method for testing the bending resistance of fixing nails for waterproof membrane roofing

Abstract

The present invention relates to a device and method for testing the bending resistance of fixing nails for waterproof coiled roofing, comprising a jaw fixed end and a jaw movable end arranged opposite to each other, the jaw movable end comprising a plurality of clamping members, the clamping members being connected to a clamping drive mechanism so as to clamp the fixing nails with the jaw fixed end under the action of the clamping drive mechanism, a pressure detection element being provided between the clamping members and the clamping drive mechanism, swing rods being provided on both sides of the jaw fixed end, a fixing nail bending push rod being provided between the swing rods on both sides, the end of the swing rod located on one side of the jaw fixed end being connected to the swing drive mechanism, the test device of the present invention replacing manual operation, thereby improving the test quality and efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of building material product testing, and in particular to a device and method for testing the anti-bending properties of fixing nails for waterproof coiled roofing. Background Art

[0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] The function of fixing nails used in waterproof membrane roofing is to mechanically secure the membrane and related materials to the roofing substrate in conjunction with gaskets, sleeves, and battens. The performance of fixing nails is crucial to the quality and safety of waterproofing projects, with bending resistance being a key quality indicator. The bending resistance test for fixing nails in waterproof membrane roofing employs a fixing nail fixture and a dial. The test procedure involves bending the nail to 15° within 3-5 seconds using a bending tool, with at least two threads exposed at the top of the fixture. The nail should be free of cracks and damage. This test is repeated for five specimens before a final determination is made. Because each retaining pin has a different outer diameter, its bending resistance varies. Manual operation inevitably involves deviations in each application of force, making it difficult to bend the pin to an exact 15° angle within 3 to 5 seconds. When clamping the pin in a vise, operators often rely on feel or the number of turns to tighten the pin, often failing to use a torque wrench or consider the effect of the pin's outer diameter deviation on the clamping force. This can lead to continued bending tests even after the pin has been crushed by the vise jaws, a situation inconsistent with actual use. Currently, no feasible device or method exists to address these issues that affect the quality and efficiency of pin bending tests. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a device for testing the anti-bending properties of fixed nails for waterproof membrane roofing, which replaces manual test operation and judgment and improves test quality and efficiency.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions

[0006] In the first aspect, an embodiment of the present invention provides a bending resistance test device for fixing nails for waterproof roll roofing, comprising a jaw fixed end and a jaw movable end arranged relatively to each other, the jaw movable end comprising a plurality of clamping parts, the clamping parts being connected to a clamping drive mechanism to clamp the fixing nails with the jaw fixed end under the action of the clamping drive mechanism, a pressure detection element being provided between the clamping parts and the clamping drive mechanism, rocker arms being provided on both sides of the jaw fixed end, a fixing nail bending push rod being provided between the rocker arms on both sides, and the end of the rocker arm located on one side of the jaw fixed end being connected to the swing drive mechanism.

[0007] Optionally, a plurality of first arcuate grooves are provided on the side of the fixed end of the jaw facing the movable end of the jaw, and correspondingly, a plurality of second arcuate grooves matching the first arcuate grooves are provided on the surface of the clamping member facing the fixed end of the jaw.

[0008] Optionally, the clamping drive mechanism adopts an electric telescopic cylinder, the telescopic component of the electric telescopic cylinder is connected to the clamping piece, and the electric telescopic cylinder is connected to the clamping drive motor, and the clamping drive motor drives the telescopic component to perform telescopic movement.

[0009] Optionally, the swing drive mechanism includes a swing drive motor connected to one end of the swing rod, and the end of the other swing rod is rotatably connected to a shaft seat provided on one side of the fixed end of the jaw.

[0010] Optionally, the fixed nail bending push rod is slidably connected to the swing rod, and a locking piece is provided between the fixed nail bending push rod and the swing rod.

[0011] Optionally, a sliding sleeve is provided at the end of the fixed nail bent push rod, the sliding sleeve is slidably connected to the rocker arm, and the locking piece is a locking bolt, which is threadedly connected to the sliding sleeve.

[0012] Optionally, a connecting shaft is fixed between the ends of the two rocking arms away from the fixed ends of the jaws, and the connecting shaft is installed with a first image acquisition element.

[0013] Optionally, a second image acquisition element is further provided on both sides of the area between the fixed end of the jaw and the movable end of the jaw.

[0014] Optionally, the jaw fixed end and the jaw movable end are both arranged on a substrate, and a plurality of through holes are provided in an area of ​​the substrate between the jaw fixed end and the jaw movable end, and the positions of the through holes correspond to the fixing positions of the fixing pins.

[0015] In a second aspect, an embodiment of the present invention provides a method for testing the bending resistance of the fixing nails for waterproof membrane roofing according to the first aspect, comprising the following steps:

[0016] Place multiple fixing pins to be tested between the fixed end and the movable end of the jaws;

[0017] The clamping drive mechanism works, driving the clamping member and the fixed end of the jaws to clamp the fixing pin until the pressure value detected by the pressure detection element reaches the set value;

[0018] The swing drive mechanism works to drive the swing rod to rotate, and the fixed nail bending push rod pushes the fixed multiple fixed nails to bend the set angle required by the test at the same time.

[0019] Beneficial effects of the present invention:

[0020] 1. In the test device of the present invention, the clamping part is connected to the clamping drive mechanism, and can cooperate with the fixed end of the jaws to clamp the fixing nail under the drive of the clamping drive mechanism. At the same time, the clamping force is controlled by the pressure detection element, avoiding the crushing or excessive looseness of the fixing nail caused by manual feel when clamping, thereby ensuring the quality of the test. At the same time, through the swing drive mechanism, the rocker arm and the fixing nail bending push rod, multiple fixing nails are bent at the set angle at the same time, replacing manual bending, ensuring the accuracy of the bending angle, and at the same time improving efficiency and reducing labor intensity.

[0021] 2. The test device of the present invention has a first arc-shaped groove at the fixed end of the jaws and a second arc-shaped groove at the clamping member, which meets the clamping requirements for fixing nails of different diameters. At the same time, the fixing nail bending push rod is slidably connected to the rocker arm, and a locking member is provided between the fixing nail bending push rod and the rocker arm, which meets the bending requirements of fixing nails of different lengths, making the entire test device highly versatile and applicable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings in the specification, which constitute a part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation on this application.

[0023] Figure 1 This is a top view of the overall structure of Example 1 of the present invention;

[0024] Figure 2 This is a side view of the overall structure of Example 1 of the present invention;

[0025] Figure 3 For the present invention Figure 1 A-direction cross-sectional diagram;

[0026] Figure 4 For the present invention Figure 1 A local enlarged schematic diagram of point B in FIG;

[0027] Figure 5 This is a schematic diagram of the initial state of Example 2 of the present invention;

[0028] Figure 6 This is a schematic diagram of a state where the fixing pin is bent according to embodiment 2 of the present invention;

[0029] Among them, 1. jaw fixed end, 2. lower end of fixing pin, 3. through hole, 4. mounting base, 5. serpentine bracket, 6. shaft seat, 7. intermediate shaft, 8. second sleeve, 9. base plate, 10. bracket, 11. electric telescopic cylinder, 12. first servo motor, 13. telescopic component, 14. flange, 15. pressure sensor, 16. clamping piece, 17. fixing pin, 18. thread, 19. rocker arm, 20. fourth sleeve, 21. fixing pin bending push rod, 22. third sleeve, 23. weld, 24. connecting shaft, 25. first camera, 26. locking bolt, 27. remote control, 28. second camera, 29. output shaft, 30. second servo motor, 31. PLC controller, 32. first sleeve, 33. second arc groove, 34. first arc groove, 35. key, 36. support leg. DETAILED DESCRIPTION

[0030] Example 1

[0031] This embodiment provides a device for testing the bending resistance of fixed nails for waterproof membrane roofing. Figure 1-Figure 4 As shown, it includes a base plate 9, and legs 36 are provided at the four corners of the bottom surface of the base plate 9. The base plate 9 is fixed to the ground foundation through the legs 36. The base plate 9 is provided with a relatively set jaw fixed end 1 and a jaw movable end. The jaw fixed end 1 and the jaw movable end can cooperate to clamp multiple fixing nails to be tested.

[0032] The fixed end 1 of the jaw adopts a fixed block, and a protrusion is provided on the upper part of the fixed block facing the side of the movable end of the jaw, and a plurality of first arc-shaped grooves 34 are provided on the side of the protrusion facing the movable end of the jaw. In this embodiment, the five fixing nails are subjected to the bending resistance test at the same time, so five first arc-shaped grooves 34 are provided on the protrusion. It can be understood that those skilled in the art can set the number of first arc-shaped grooves 34 according to actual needs.

[0033] The movable end of the jaw includes multiple clamping members 16. The number of clamping members 16 matches the number of fixing nails to be tested. Therefore, five clamping members 16 are provided in this embodiment. The side of the clamping member 16 facing the protrusion is provided with a second arc groove 33 that matches the first arc groove 34. The clamping member 16 and the fixed end 1 of the jaw can position and clamp the fixing nail through the second arc groove 33 and the first arc groove 34.

[0034] By providing the first arcuate groove 34 and the second arcuate groove 33 , the clamping requirements for fixing nails of different diameters are met.

[0035] Each clamping member is connected to a clamping drive mechanism, which is used to drive the clamping member to move linearly toward or away from the fixed end of the jaws, thereby achieving clamping and loosening of the fixing nail.

[0036] The clamping drive mechanism is fixed on the bracket 10, and the bracket 10 is fixed to the base plate 9 by bolts. The clamping drive mechanism can be a device that can output linear motion, such as a linear motor, a cylinder, or a hydraulic cylinder. In this embodiment, the clamping drive mechanism adopts an existing electric telescopic cylinder 11, and the electric telescopic cylinder 11 is fixed to the bracket 10 by bolts. The electric telescopic cylinder 11 is connected to the clamping drive motor, and the clamping drive motor drives its telescopic component to perform telescopic motion. The telescopic component of the electric telescopic cylinder is connected to the clamping member. In this embodiment, the clamping drive motor adopts a first servo motor 12.

[0037] A pressure detection element is provided between the telescopic part and the clamping part of the electric telescopic cylinder 11. The pressure detection element adopts a pressure sensor 15. One end of the pressure sensor 15 is connected to the end of the telescopic part 13 of the electric telescopic cylinder through a flange 14 and a hexagon socket bolt, and the other end is connected to the clamping part 16.

[0038] By providing the pressure sensor 15, the clamping force applied by the clamping member 16 and the jaw fixed end 1 to the fixing nail can be controlled, thereby avoiding crushing or excessive looseness of the fixing nail caused by hand feeling when clamping, and ensuring the test quality.

[0039] The pressure sensor 15 is connected to a control system installed on the substrate 9 and can transmit the detected pressure information to the control system. The control system is connected to a remote monitoring platform and can display the information on the remote monitoring platform.

[0040] The control system adopts a PLC controller 31 , and the first servo motor 12 is connected to the PLC controller 31 and can receive instructions from the PLC controller 31 to work.

[0041] There are rocker arms 19 on both sides of the jaw fixed end 1, which are the first rocker arm and the second rocker arm respectively. A fixed nail bending push rod 21 is provided between the first rocker arm and the second rocker arm. The fixed nail bending push rod 21 connects the first rocker arm and the second rocker arm so that the first rocker arm and the second rocker arm can rotate synchronously. The end of the first rocker arm located on the side of the jaw fixed end is connected to the swing drive mechanism, and the end of the second rocker arm located on the side of the jaw fixed end is rotatably connected to the shaft seat 6.

[0042] In some other embodiments, the ends of the first rocker arm and the second rocker arm located on the side of the jaw fixed end 1 are both connected to a swinging drive mechanism, or the end of the second rocker arm located on the side of the jaw fixed end is connected to the swinging drive mechanism, and the end of the first rocker arm located on the side of the jaw fixed end is rotatably connected to the axle seat 6.

[0043] Specifically, the swing drive mechanism adopts a swing drive motor, and the swing drive motor adopts a second servo motor 30. The second servo motor 30 is arranged on one side of the fixed end 1 of the jaw and is fixed to the base plate 9 by bolts. The output shaft 29 of the second servo motor 30 is fixed to the first shaft sleeve 32. The first shaft sleeve 32 is sleeved on the outer periphery of the output shaft 29 of the second servo motor 30. The outer peripheral surface of the first shaft sleeve 32 is fixedly connected to one end of the first rocker arm. The second servo motor 30 can drive the first rocker arm to swing through the first shaft sleeve 32.

[0044] The shaft seat 6 is arranged on the other side of the fixed end 1 of the jaw, and two shaft seats 6 are provided. An intermediate shaft 7 is provided between the two shaft seats 6. The intermediate shaft 7 is coaxially arranged with the output shaft 29 of the second servo motor 30. A second shaft sleeve 8 is provided at the end of the second rocker arm, and the second shaft sleeve 8 is rotatably connected to the intermediate shaft 7.

[0045] In this embodiment, the axis heights of the intermediate shaft 7 and the output shaft 29 of the second servo motor 30 are smaller than the axis height of the telescopic component 13 of the electric telescopic cylinder 11 .

[0046] One end of the first swing rod is connected to the swing driving mechanism, one end of the second swing rod is rotatably connected to the shaft seat 6, and a connecting shaft 24 is fixed between the other ends of the first swing rod and the second swing rod.

[0047] Specifically, the ends of the first rocker arm and the second rocker arm are connected to the third shaft sleeve 22 by means of a key 35, and a connecting shaft 24 is provided between the two third shaft sleeves 22. One end of the connecting shaft 24 is welded and fixed to the bottom of one of the third shaft sleeves 22, and the other end of the connecting shaft 24 is welded and fixed to the bottom of the other third shaft sleeve 22, that is, a weld 23 is provided between the connecting shaft 24 and the third shaft sleeve 22.

[0048] A first image acquisition element is fixed on the connecting shaft 24. The first image acquisition element adopts a first camera 25. The lens of the first camera 25 is set toward the position between the fixed end 1 of the jaw and the movable end of the jaw for clamping the fixing nail, and is used to collect real-time images of the fixing nail during the test.

[0049] The first camera 25 is connected to the PLC controller 31 and can transmit collected image information to the PLC controller 31 .

[0050] A fixing nail bending push rod 21 is provided between the first swing arm and the second swing arm. The fixing nail bending push rod 21 is used to apply a thrust to the clamped fixing nail so that the fixing nail is bent.

[0051] Specifically, the two ends of the fixed pin bending push rod 21 are fixed with a fourth shaft sleeve 20, wherein the fourth shaft sleeve 20 at one end is sleeved on the outer periphery of the first rocker arm and is slidably connected to the first rocker arm, and the fourth shaft sleeve 20 at the other end is sleeved on the outer periphery of the second rocker arm and is slidably connected to the second rocker arm.

[0052] Locking members are provided between the first swing arm, the second swing arm and the fourth shaft sleeve, for locking and fixing the fixing nail bending push rod 21 with the first swing arm and the second swing arm.

[0053] In this embodiment, the locking member is a locking bolt 26, which is threadedly connected to the fourth sleeve 20. By rotating the locking bolt 26, the locking bolt 26 can move along its own axis and then press on the surface of the rocker arm 19 to lock and fix the rocker arm 19 and the fourth sleeve 20.

[0054] The positions of the fixing pin bending push rod 21 on the first swing arm and the second swing arm can be adjusted, which meets the bending requirements of fixing pins of different lengths, making the entire test device highly versatile and applicable.

[0055] In this embodiment, second image acquisition elements are provided on both sides of the area between the fixed end 1 of the jaw and the movable end of the jaw. The second image acquisition element adopts a second camera 28. The lens of the second camera 28 is directed toward the area between the fixed end 1 of the jaw and the movable end of the jaw for fixing the fixing nail. The second camera 28 is connected to the PLC controller 31 and can capture images of the fixing nails during the test and transmit the captured images to the PLC controller.

[0056] The second camera 28 is connected to one end of the serpentine bracket, and the other end of the serpentine bracket is fixedly connected to the base plate 9 through the mounting base 4. The second camera is fixed with the serpentine bracket 5 to facilitate adjustment of its angle.

[0057] A plurality of through holes 3 are provided on the substrate corresponding to the area for fixing the fixing pins between the fixed end 1 of the jaw and the movable end of the jaw. The number of through holes 3 is the same as the number of fixing pins to be tested and corresponds to the fixed positions of the fixing pins. By setting the through holes 3, the test requirements of fixing pins with longer lengths are met.

[0058] The test device of this embodiment can simultaneously bend multiple fixed pins to set angles through a swing drive mechanism, a swing rod and a fixed pin bending push rod, replacing manual bending, ensuring the accuracy of the bending angle, and at the same time improving efficiency and reducing labor intensity.

[0059] In this embodiment, the PLC controller 31 is connected to the remote control 27 of the remote monitoring platform, and the staff can send instructions to the PLC controller 31 through the remote control 27 .

[0060] Example 2

[0061] This embodiment provides a method for testing the anti-bending performance of the fixing nails for waterproof membrane roofing as described in Example 1. Figure 5-Figure 6 As shown, the following steps are included:

[0062] Step 1: Press the start button in the PLC controller 31 to put each electronic control component into a ready-to-work state.

[0063] Step 2: Place the fixing nail 17 to be tested at the most concave position of the first arc-shaped groove 34, and make at least two threads 18 of the fixing nail 17 higher than the top surface of the fixed end 1 of the jaws, and the lower end 2 of the fixing nail 17 has a set distance from the upper surface of the base plate 9. Then start the first servo motor 12 through the PLC controller 31, and the telescopic component 13 of the electric telescopic cylinder 11 drives the clamping piece to move, and the second arc-shaped groove 33 of the clamping piece 16 cooperates with the first arc-shaped groove 34 to clamp the fixing nail 17. When the pressure value detected by the pressure sensor 15 reaches the set value required by the test, the first servo motor 12 stops working.

[0064] Using the same method, the remaining fixing pins 17 are clamped and fixed in sequence using the fixed end 1 and the movable end of the jaws.

[0065] Step 3: The second servo motor 30 is controlled by the PLC controller 31 to drive the first swing arm and the second swing arm to swing. The five fixing pins 17 are bent to the set angle by the fixing pin bending push rod 21 within 3-5 seconds.

[0066] In this embodiment, the set angle is 15°, which can be achieved by controlling the rotation angle of the output shaft 29 of the second servo motor 30 .

[0067] During the bending process of the fixing nail 17, the first camera 25 and the second camera 28 collect images of the fixing nail 17 and transmit them to the PLC controller 31. The PLC controller 31 transmits the collected images to the remote monitoring platform to determine whether the fixing nail has cracks or damage.

[0068] Since the center lines of the first arc groove 34 and the second arc groove 33 are parallel to each other and located in the same vertical plane, regardless of whether the diameter deviation of the fixing nail 17 changes or not, the first arc groove 34 is a positioning reference surface, which can ensure that the five fixing nails 17 are bent to 15° by the fixing nail bending push rod.

[0069] The fixing nail bending push rod 21 slides along the first swing rod and the second swing rod and is locked, and the height of the contact part with the fixing nail 17 can be adjusted to meet the test requirements of different fixing nails.

[0070] The pressure sensor 15 can quantitatively determine the clamping force according to the diameter of the fixing pin 17 to prevent the fixing pin 17 from being crushed or too loose to affect the test quality.

[0071] Although the above describes the specific embodiments of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without any creative work are still within the scope of protection of the present invention.

Claims

1. A device for testing the bending resistance of fixing nails for waterproof membrane roofing, characterized in that: The jaw movable end includes a plurality of clamping members connected to a clamping drive mechanism so as to clamp a fixing nail with the jaw fixed end under the action of the clamping drive mechanism. A pressure detection element is provided between the clamping member and the clamping drive mechanism. A swing rod is provided on both sides of the jaw fixed end. A fixing nail bending push rod is provided between the swing rods on both sides. The end of the swing rod located on one side of the jaw fixed end is connected to the swing drive mechanism. The side of the jaw fixed end facing the jaw movable end is provided with a plurality of first arcuate grooves, and correspondingly, the surface of the clamping member facing the jaw fixed end is provided with a plurality of second arcuate grooves matching the first arcuate grooves; The swing drive mechanism includes a swing drive motor connected to one end of the swing rod, and the end of the other swing rod is rotatably connected to a shaft seat provided on one side of the fixed end of the jaw; A connecting shaft is fixed between the ends of the two swing arms away from the fixed ends of the jaws, and a first image acquisition element is installed on the connecting shaft; The clamping drive mechanism adopts an electric telescopic cylinder, the telescopic component of the electric telescopic cylinder is connected to the clamping member, and the electric telescopic cylinder is connected to the clamping drive motor, and the clamping drive motor drives the telescopic component to perform telescopic movement; The clamping drive motor adopts the first servo motor; The swing drive motor adopts a second servo motor, the output shaft of the second servo motor is fixed to the first shaft sleeve, the first shaft sleeve is sleeved on the outer periphery of the output shaft of the second servo motor, the outer periphery of the first shaft sleeve is fixedly connected to one end of the first swing rod, and the second servo motor can drive the first swing rod to swing through the first shaft sleeve; The fixed nail bending push rod is slidably connected to the swing rod, and a locking piece is provided between the fixed nail bending push rod and the swing rod.

2. A device for testing the anti-bending properties of fixing nails for waterproof membrane roofing according to claim 1, characterized in that: A sliding sleeve is provided at the end of the fixed nail bent push rod, the sliding sleeve is slidably connected to the swing rod, and the locking piece adopts a locking bolt, which is threadedly connected to the sliding sleeve.

3. A device for testing the anti-bending properties of fixing nails for waterproof membrane roofing according to claim 1, characterized in that: Second image acquisition elements are also provided on both sides of the area between the fixed end of the jaw and the movable end of the jaw.

4. A device for testing the anti-bending properties of fixing nails for waterproof membrane roofing according to claim 1, characterized in that: The jaw fixed end and the jaw movable end are both arranged on the base plate, and a plurality of through holes are arranged in the area of ​​the base plate between the jaw fixed end and the jaw movable end, and the positions of the through holes correspond to the fixing positions of the fixing pins.

5. A method for testing the bending resistance of the fixing nail device for waterproof membrane roofing according to any one of claims 1 to 4, characterized in that: The following steps are involved: Place multiple fixing pins to be tested between the fixed end and the movable end of the jaws; The clamping drive mechanism works, driving the clamping member and the fixed end of the jaws to clamp the fixing pin until the pressure value detected by the pressure detection element reaches the set value; The swing drive mechanism works to drive the swing rod to rotate, and the fixed nail bending push rod pushes the fixed multiple fixed nails to bend the set angle required by the test at the same time.

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