Shock resistance testing device for reflective film
By designing a reflective film impact resistance test device including a workbench and mounting groove, fixing the reflective film with a rotary down plate and nut, and applying impact force concentratedly through the gravity detection mechanism, the problems of reflective film displacement and inaccurate test in traditional devices are solved, achieving higher testing accuracy and flexibility.
Patent Information
- Application Number
- CN202421135240.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-05-23
AI Technical Summary
The traditional reflective film impact resistance test device cannot effectively fix the reflective film, resulting in slight displacements easily during the test process and the test effect is not accurate enough.
A reflective film impact resistance test device including a workbench and mounting groove is designed. By cooperating the rotating down plate and the nut, the position of the reflective film can be flexibly and effectively fixed, and the gravity detection mechanism is used to cooperate with the impact ball to ensure that the applied impact force is more concentrated and uniform.
It effectively reduces the displacement of the reflective film during impact resistance test, improves the accuracy and reliability of the test, and can flexibly adapt to reflective films of different sizes or shapes.
Smart Images
Figure CN222896019U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of reflective film production, in particular to a device for testing the impact resistance of reflective films. Background Art
[0002] Retroreflective film is a thin film material with reflective properties. It is usually used in traffic signs, road markings, traffic facilities and vehicles to improve visibility at night or in low visibility conditions. However, impact resistance test is also one of the important means to evaluate the performance of retroreflective film. By testing the performance of retroreflective film under different impact conditions, its impact resistance can be determined, providing a reference for product improvement and optimization.
[0003] The traditional test device for the impact resistance of reflective film is to first place the reflective film on the platform of a weighing device or a pressure sensor. When the reflective film sample is impacted, the weighing device or the pressure sensor will detect the pressure or weight change it receives and convert it into corresponding data.
[0004] The traditional test device for the impact resistance of reflective film has the following problems: the reflective film cannot be effectively fixed on the platform, and it is easy to have a slight displacement during the test, which makes the test result inaccurate, and it is impossible to concentrate all the forces during gravity detection. Therefore, we propose a test device for the impact resistance of reflective film. Utility Model Content
[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a device for testing the impact resistance of reflective film, which can more flexibly and effectively fix the position of the reflective film, reduce the displacement during the impact resistance test, and effectively solve the problems in the background technology.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for testing the impact resistance of reflective film, comprising a workbench and a mounting groove;
[0007] Workbench: The left and right ends of the workbench are respectively fixedly connected with mounting frames, the front side of the mounting frame at the left end is provided with scale lines, the interior of the mounting frames is provided with guide grooves, a fixed plate is slidably connected between the guide grooves, an impact ball is placed in the ball groove at the left end of the upper surface of the fixed plate, and a round opening is provided in the middle of the fixed plate;
[0008] Installation groove: It is opened on the upper surface of the workbench. The bottom wall of the installation groove is provided with a gravity detection mechanism. The gravity detection mechanism is installed in conjunction with the impact ball. The upper surface of the gravity detection mechanism is provided with an evenly distributed fixing mechanism, which can more flexibly and effectively fix the position of the reflective film, reduce the displacement during the impact resistance test, and ensure that the applied impact force is more concentrated and uniform, avoiding errors caused by dispersed or uneven force.
[0009] Furthermore, it also includes a single-chip microcomputer, which is arranged on the front side of the workbench, and the input end of the single-chip microcomputer is electrically connected to an external power supply to facilitate the regulation of electrical operation.
[0010] Furthermore, it also includes a screw rod and a pillar, the screw rod is rotatably connected between the upper and lower inner walls of the guide slot at the left end, the upper end of the screw rod is threadedly connected to the left end of the fixed plate, the top end of the screw rod is fixedly connected to a rotating shaft, the top end of the rotating shaft extends to the outside of the upper surface of the mounting frame, the top end of the rotating shaft is fixedly connected to a knob, the pillar is fixedly connected between the upper and lower inner walls of the guide slot at the right end, the upper end of the pillar is slidably connected to the right end of the fixed plate, so as to achieve higher precision movement.
[0011] Furthermore, the gravity detection mechanism includes an impact plate, a sliding hole, a sliding column and a spring. The sliding holes are all opened in the bottom wall of the mounting groove. The inner wall of the sliding hole is slidably connected with a sliding column. The top of the sliding column is fixedly connected to the lower surface of an impact plate. The upper surface of the impact plate is installed in cooperation with the impact ball. The lower surface of the impact plate and the bottom wall of the adjacent mounting groove are fixedly connected with a spring. The spring is sleeved on the outer surface of the sliding column, so that the descending force can be concentrated to one point.
[0012] Furthermore, the gravity detection mechanism also includes a gravity sensor, which is arranged in the installation opening at the center of the bottom wall of the installation groove. The detection end at the top of the gravity sensor is installed in cooperation with the lower surface of the impact plate. The gravity sensor is bidirectionally electrically connected to the single-chip microcomputer to facilitate the detection of gravity information.
[0013] Furthermore, the fixing mechanism includes a screw, a lower pressure plate and a rubber head. There are four screws, which are respectively fixedly connected to the upper surface of the impact plate. The outer surfaces of the screws are slidably connected to the lower pressure plate, and the lower surfaces of the lower pressure plate are fixedly connected to the rubber head, thereby reducing the displacement of the reflective film during the impact resistance test.
[0014] Furthermore, the fixing mechanism also includes nuts, which are threadedly connected to the upper ends of the four screws respectively to facilitate locking the fixing mechanism.
[0015] Compared with the prior art, the utility model has the following advantages:
[0016] 1. Rotate the lower pressure plate so that the rubber head on it corresponds to the four corners of the upper surface of the reflective film. In order to ensure that the rubber head evenly contacts the four corners of the reflective film, then rotate the nut, and through the threaded connection between the nut and the screw, the nut moves downward along the axis of the screw, and then is used to adjust the position of the lower pressure plate to adapt to reflective films of different sizes or shapes. As the nut moves downward, the lower pressure plate is also pushed downward until the rubber head contacts the four corners of the upper surface of the reflective film, and the nut is locked with the thread of the screw to fix the rubber head on the lower pressure plate and the four corners of the upper surface of the reflective film, thereby effectively fixing the position of the reflective film, which can reduce the displacement of the reflective film during the impact resistance test, improve the accuracy and reliability of the test, and can flexibly adapt to reflective films of different sizes or shapes, thereby improving the flexibility of the test.
[0017] 2. Let the impact ball fall freely through the circular opening. The impact ball will fall downward under the action of gravity. When the impact ball falls onto the impact plate, it will compress the spring, which makes the impact plate move downward along the axis of the sliding column. During the movement, the impact plate will contact the upper surface of the gravity sensor, so that the impact force or pressure can be measured, so that the downward force can be gathered to one point and transmitted to the impact plate in a more concentrated manner, which can improve the accuracy of the impact resistance test. Once the gravity sensor receives the signal, it will transmit the signal to the microcontroller, which will analyze and integrate the received data and display the results through an external display, so as to better understand the force exerted on the reflective film. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the structure of the utility model;
[0019] Figure 2 It is a schematic diagram of the structure of the utility model in a front side section;
[0020] Figure 3 It is a schematic diagram of the structure enlarged at point A of the utility model.
[0021] In the figure: 1 workbench, 2 single chip computer, 3 mounting groove, 4 gravity detection mechanism, 41 impact plate, 42 sliding hole, 43 sliding column, 44 spring, 45 gravity sensor, 5 fixing mechanism, 51 screw rod, 52 nut, 53 lower pressure plate, 54 rubber head, 6 mounting frame, 7 scale line, 8 guide slide groove, 9 rotating shaft, 10 knob, 11 impact ball, 12 fixing plate, 13 round mouth, 14 screw rod, 15 pillar. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] See also Figure 1-3 , This embodiment provides a technical solution: a device for testing the impact resistance of a reflective film, comprising a workbench 1 and a mounting slot 3;
[0024] Workbench 1: The left and right ends thereof are respectively fixedly connected with mounting frames 6, the front side surface of the mounting frame 6 at the left end is provided with scale lines 7, the interior of the mounting frame 6 is provided with guide grooves 8, a fixing plate 12 is slidably connected between the guide grooves 8, an impact ball 11 is placed in the ball groove at the left end of the upper surface of the fixing plate 12, a round opening 13 is provided in the middle of the fixing plate 12, and also includes a single-chip microcomputer 2, the single-chip microcomputer 2 is arranged on the front side surface of the workbench 1, the input end of the single-chip microcomputer 2 is electrically connected to an external power supply, and also includes a screw rod 14 and a pillar 15, the screw rod 14 is rotatably connected between the upper and lower inner walls of the guide groove 8 at the left end, the upper end of the screw rod 14 is threadedly connected to the left end of the fixing plate 12, the top end of the screw rod 14 is fixedly connected to a rotating shaft 9, and the top end of the rotating shaft 9 extends to the mounting frame 15. On the outside of the upper surface of the mounting frame 6, the top of the rotating shaft 9 is fixedly connected with a knob 10, and the pillar 15 is fixedly connected between the upper and lower inner walls of the guide slot 8 at the right end. The upper end of the pillar 15 is slidably connected with the right end of the fixed plate 12, and then the knob 10 is rotated, the knob 10 drives the rotating shaft 9 to rotate, and the rotating shaft 9 drives the screw rod 14 to rotate. The screw rod 14 rotates through the threaded connection with the left end of the fixed plate 12, so that the fixed plate 12 moves along the inner wall of the guide slot 8 at the left end, and at the same time drives the right end of the fixed plate 12 to slide along the outer surface of the pillar 15, and then the height of the fixed plate 12 is adjusted according to the scale line 7, so as to record the height of each descent, and the impact ball 11 is freely dropped through the round mouth 13, and the impact ball will fall downward under the action of gravity;
[0025] The mounting groove 3 is provided on the upper surface of the workbench 1. The bottom wall of the mounting groove 3 is provided with a gravity detection mechanism 4. The gravity detection mechanism 4 is installed in cooperation with the impact ball 11. The gravity detection mechanism 4 includes an impact plate 41, a sliding hole 42, a sliding column 43 and a spring 44. The sliding holes 42 are all provided on the bottom wall of the mounting groove 3. The inner wall of the sliding hole 42 is slidably connected with a sliding column 43. The top of the sliding column 43 is fixedly connected to the lower surface of an impact plate 41. The upper surface of the impact plate 41 is installed in cooperation with the impact ball 11. The lower surface of the impact plate 41 and the bottom wall of the adjacent mounting groove 3 are fixedly connected with a spring 44. The spring 44 is sleeved on the outer surface of the sliding column 43. The gravity detection mechanism 4 also includes a gravity sensor 45. The gravity sensor 45 is arranged at the bottom of the mounting groove 3. In the mounting opening at the center of the wall, the detection end at the top of the gravity sensor 45 is installed in cooperation with the lower surface of the impact plate 41. The gravity sensor 45 is bidirectionally electrically connected to the single-chip microcomputer 2. When the impact ball 11 falls onto the impact plate 41, it compresses the spring 44, which causes the impact plate 41 to move downward along the axis of the sliding column 43. During the movement, the impact plate 41 contacts the upper surface of the gravity sensor 45, so that the impact force or pressure can be measured, so that the downward force can be gathered to one point and transmitted to the impact plate 41 in a more concentrated manner, which can improve the accuracy of the impact resistance test. Once the gravity sensor 45 receives a signal, it will transmit the signal to the single-chip microcomputer 2, and the single-chip microcomputer 2 will analyze and integrate the received data. , and the result is displayed through an external display, so as to better understand the force exerted on the reflective film. The upper surface of the gravity detection mechanism 4 is provided with a uniformly distributed fixing mechanism 5, the fixing mechanism 5 includes a screw 51, a lower pressure plate 53 and a rubber head 54. There are four screws 51, and the four screws 51 are respectively fixedly connected to the upper surface of the impact plate 41. The outer surface of the screw 51 is slidably connected with the lower pressure plate 53, and the lower surface of the lower pressure plate 53 is fixedly connected with the rubber head 54. The fixing mechanism 5 also includes nuts 52, which are respectively threadedly connected to the upper ends of the four screws 51. First, a reflective film is placed flat on the upper surface of the impact plate 41. Next, the lower pressure plate 53 is rotated so that the rubber head 54 on it is aligned with the four corners of the upper surface of the reflective film. Correspondingly, in order to ensure that the rubber head 54 evenly contacts the four corners of the reflective film, the nut 52 is then rotated, and the nut 52 is threadedly connected to the screw rod 51, so that the nut 52 moves downward along the axis of the screw rod 51, and then is used to adjust the position of the lower pressing plate 53 to adapt to reflective films of different sizes or shapes. As the nut 52 moves downward, the lower pressing plate 53 is also pushed to move downward until the rubber head 54 contacts the four corners of the upper surface of the reflective film, and the nut 52 is threadedly locked with the screw rod 51 to fix the rubber head 54 on the lower pressing plate 53 and the four corners of the upper surface of the reflective film, thereby effectively fixing the position of the reflective film, reducing the displacement of the reflective film during the impact resistance test, and improving the accuracy and reliability of the test.
[0026] The working principle of the device for testing the impact resistance of reflective film provided by the utility model is as follows: first, a reflective film is placed flat on the upper surface of the impact plate 41, and then the lower pressing plate 53 is rotated so that the rubber head 54 on it corresponds to the four corners of the upper surface of the reflective film. In order to ensure that the rubber head 54 evenly contacts the four corners of the reflective film, the nut 52 is then rotated, and the nut 52 is threadedly connected to the screw rod 51, so that the nut 52 moves downward along the axis of the screw rod 51, and then used to adjust the position of the lower pressing plate 53 to adapt to different sizes. Or the shape of the reflective film, as the nut 52 moves downward, the lower pressing plate 53 is also pushed to move downward until the rubber head 54 contacts the four corners of the upper surface of the reflective film, and the nut 52 and the screw 51 are locked by the thread, and the rubber head 54 on the lower pressing plate 53 is fixed to the four corners of the upper surface of the reflective film, thereby effectively fixing the position of the reflective film, which can reduce the displacement of the reflective film during the impact resistance test and improve the accuracy and reliability of the test. Then, the knob 10 is rotated, and the knob 10 drives the rotating shaft 9 to rotate, and the rotating shaft 9 drives the screw 1 4 rotates, the screw rod 14 rotates and is connected with the left end of the fixing plate 12 by a thread, so that the fixing plate 12 moves along the inner wall of the guide slot 8 at the left end, and at the same time drives the right end of the fixing plate 12 to slide along the outer surface of the support 15, and then adjusts the height of the fixing plate 12 according to the scale line 7, so as to record the height of each descent, and the impact ball 11 is freely dropped through the round opening 13, and the impact ball will fall downward under the action of gravity, and when the impact ball 11 falls onto the impact plate 41, it will compress the spring 44, which makes the impact plate 41 move along the axis of the slide column 43 The line moves downward, and in the process of movement, the impact plate 41 will contact the upper surface of the gravity sensor 45, so that the force or pressure of the impact can be measured, so that the downward force can be gathered to one point and transmitted to the impact plate 41 in a more concentrated manner, which can improve the accuracy of the impact resistance test. Once the gravity sensor 45 receives the signal, it will transmit the signal to the microcontroller 2, and the microcontroller 2 will analyze and integrate the received data and display the results through an external display, so as to better understand the force exerted on the reflective film.
[0027] It is worth noting that the specific model of the single chip microcomputer 2 disclosed in the above embodiment is S7-200, and the gravity sensor 45 is recommended to be LCZ-205A. The single chip microcomputer 2 controls the gravity sensor 45 to work using a method commonly used in the prior art.
[0028] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A device for testing the impact resistance of reflective film, characterized in that: It comprises a workbench (1) and a mounting groove (3); The workbench (1) has a mounting frame (6) fixedly connected to its left and right ends respectively, a scale line (7) is provided on the front side of the mounting frame (6) at the left end, a guide groove (8) is provided inside the mounting frame (6), a fixed plate (12) is slidably connected between the guide grooves (8), an impact ball (11) is placed in a ball groove at the left end of the upper surface of the fixed plate (12), and a round opening (13) is provided in the middle of the fixed plate (12); The mounting groove (3) is provided on the upper surface of the workbench (1). The bottom wall of the mounting groove (3) is provided with a gravity detection mechanism (4). The gravity detection mechanism (4) is installed in coordination with the impact ball (11). The upper surface of the gravity detection mechanism (4) is provided with evenly distributed fixing mechanisms (5).
2. The device for testing the impact resistance of reflective film according to claim 1, characterized in that: It also comprises a single-chip microcomputer (2), wherein the single-chip microcomputer (2) is arranged on the front side of the workbench (1), and an input end of the single-chip microcomputer (2) is electrically connected to an external power supply.
3. The device for testing the impact resistance of reflective film according to claim 1, characterized in that: The invention also comprises a screw rod (14) and a support (15), wherein the screw rod (14) is rotatably connected between the upper and lower inner walls of the guide slot (8) at the left end, the upper end of the screw rod (14) is threadedly connected to the left end of the fixing plate (12), the top end of the screw rod (14) is fixedly connected to a rotating shaft (9), the top end of the rotating shaft (9) extends to the outside of the upper surface of the mounting frame (6), the top end of the rotating shaft (9) is fixedly connected to a knob (10), the support (15) is fixedly connected between the upper and lower inner walls of the guide slot (8) at the right end, and the upper end of the support (15) is slidably connected to the right end of the fixing plate (12).
4. The device for testing the impact resistance of reflective film according to claim 2, characterized in that: The gravity detection mechanism (4) comprises an impact plate (41), a sliding hole (42), a sliding column (43) and a spring (44); the sliding holes (42) are each opened on the bottom wall of the mounting groove (3); the inner wall of the sliding hole (42) is slidably connected to the sliding column (43); the top end of the sliding column (43) is fixedly connected to the lower surface of an impact plate (41); the upper surface of the impact plate (41) is mounted in cooperation with the impact ball (11); the lower surface of the impact plate (41) and the bottom wall of the adjacent mounting groove (3) are fixedly connected to the spring (44); the spring (44) is sleeved on the outer surface of the sliding column (43).
5. The device for testing the impact resistance of reflective film according to claim 4, characterized in that: The gravity detection mechanism (4) further comprises a gravity sensor (45), the gravity sensor (45) being arranged in a mounting opening at the centre of the bottom wall of the mounting groove (3), the detection end at the top end of the gravity sensor (45) being mounted in cooperation with the lower surface of the impact plate (41), and the gravity sensor (45) being bidirectionally electrically connected to the single-chip computer (2).
6. The device for testing the impact resistance of reflective film according to claim 1, characterized in that: The fixing mechanism (5) comprises a screw rod (51), a lower pressing plate (53) and a rubber head (54). The number of the screw rods (51) is four. The four screw rods (51) are respectively fixedly connected to the upper surface of the impact plate (41). The outer surfaces of the screw rods (51) are slidably connected to the lower pressing plate (53), and the lower surfaces of the lower pressing plates (53) are fixedly connected to the rubber heads (54).
7. The device for testing the impact resistance of reflective film according to claim 6, characterized in that: The fixing mechanism (5) further comprises a nut (52), wherein the nut (52) is respectively threadedly connected to the upper ends of the four screw rods (51).