Shock resistance detection device for EVA (Ethylene Vinyl Acetate) intermediate film
By combining the electromagnetic coil fixing rod and the counterweight, along with the design of the movable clamping plate and the telescopic rod, the various impact simulation and adaptive clamping problems of existing EVA interlayer impact resistance testing equipment are solved, achieving more accurate and stable test results.
Patent Information
- Application Number
- CN202422613213.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-10-29
AI Technical Summary
Existing EVA interlayer impact resistance testing equipment cannot simulate various actual impact conditions, resulting in inaccurate and incomplete test results. The fixtures cannot be adaptively adjusted, leading to excessive or insufficient clamping force, which affects the experimental data.
An impact resistance testing device for EVA interlayer membrane was designed. By combining an electromagnetic coil to fix the rod, a counterweight and an impact head, and the synergistic effect of a movable clamping plate, a telescopic rod and a spring, various impact tests and adaptive clamping can be achieved, ensuring the accuracy and stability of the test.
It enables the simulation of various impact conditions according to different needs, provides reliable test data, ensures that the EVA interlayer is tested in a horizontal state, avoids the problem of excessive or insufficient clamping force, and improves the accuracy and reliability of the test.
Smart Images
Figure CN223650343U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of material testing technology, specifically to an impact resistance testing device for EVA interlayer. Background Technology
[0002] In the quality inspection of EVA interlayer films, impact resistance testing is crucial. However, existing testing equipment can only perform single-mode impact tests when testing the impact resistance of EVA interlayer films, and cannot simulate various actual impact conditions according to different work needs. This results in inaccurate and incomplete test results. Furthermore, it cannot test from different angles and levels by replacing different impact heads, thus failing to provide reliable data for product quality assessment and improvement. At the same time, the clamps of existing equipment cannot be adaptively adjusted according to the thickness and texture of the EVA interlayer film. Either the clamping force is too large and damages the film material, or the clamping force is too small and causes the film material to loosen or shift during the test, interfering with the experimental data. Therefore, we propose an impact resistance testing device for EVA interlayer films. Utility Model Content
[0003] The purpose of this invention is to provide an impact resistance testing device for EVA interlayer.
[0004] To achieve the above objectives, this utility model provides the following technical solution: an impact resistance testing device for EVA interlayer film, comprising a base and a mounting frame. A fixing frame is mounted on the top of the base. A hole is provided in the middle of the top of the fixing frame. An electromagnetic coil is provided above the hole. A rod is provided inside the electromagnetic coil. An impact head, a connecting rod, a counterweight, and a fixing block are respectively mounted on both sides of the rod. Mounting blocks are mounted on the upper left and right sides of the mounting frame. A sliding groove is provided on one side of the mounting block. Mounting plates are provided above and below the sliding groove. A spring, a telescopic rod, and a movable clamping plate are mounted on the mounting plate.
[0005] As a further embodiment of this utility model: the rod passes through the hole between the electromagnetic coil and the fixing frame; one side of the rod, the connecting rod, and the fixing block is provided with a threaded joint; one side of the rod, the connecting rod, and the impact head is provided with a threaded hole; the rod is connected to the threaded hole on the side of the impact head through the threaded joint; the rod is connected to the threaded joint on the side of the connecting rod through the threaded hole on one side; the counterweight has a hole inside; the counterweight can be fixed above the connecting rod through the hole; one side of the connecting rod is connected to the threaded joint on the side of the fixing block through the threaded hole.
[0006] As a further embodiment of this utility model: a movable clamping plate is installed inside the sliding groove, a telescopic rod is installed above the mounting plate, a spring is installed around the telescopic rod, and one side of the telescopic rod is connected to the movable clamping plate.
[0007] As a further embodiment of this utility model: a hole is provided in the middle of the mounting block, and a rotating rod A and a rotating rod B are installed inside the hole. A turntable is installed on one side of the rotating rod A. A fixing hole is provided on the top of both the turntable A and the mounting block. A fixing pin is installed above the fixing hole, and a rotating handle is installed above the turntable.
[0008] As a further embodiment of this utility model: the B rotating rod is connected to the motor, and the motor is mounted on the base via a support frame.
[0009] As a further embodiment of this utility model: a sand bucket is installed in the middle of the mounting frame and below the impact head; a storage box is installed on one side of the mounting frame, which stores other types of impact heads, as well as connecting rods and counterweights; and a display screen and controller are installed on one side of the mounting frame.
[0010] Compared with the prior art, the beneficial effects of this utility model by adopting the above technical solution are as follows:
[0011] 1. This utility model features a fixed frame above the base, with a rod positioned in the middle of the frame. An impact head, a connecting rod, a counterweight, and a fixing block are respectively installed on both sides of the rod. Compared to existing testing equipment, this design allows for more accurate and comprehensive testing results when testing the impact resistance of EVA interlayer membranes. By assembling the counterweight and adjusting its mass according to different work requirements, various actual impact conditions can be simulated. Furthermore, different impact heads can be used to conduct various experiments, testing the impact resistance of EVA interlayer membranes from different angles and levels, providing reliable data for product quality assessment and improvement.
[0012] 2. This utility model, by installing mounting blocks on both sides above the mounting frame, with a sliding groove on one side of the mounting block, and installing springs, telescopic rods, and movable clamping plates above the mounting plate, compared with existing equipment on the market, uses the synergistic action of the movable clamping plates, telescopic rods, and springs to fix the EVA interlayer membrane on the A and B rotating rods. When clamping the EVA interlayer membrane, the springs can provide appropriate elastic pressure according to the thickness and texture of the membrane, while the telescopic rods ensure uniform pressure transmission. This ensures that the movable clamping plates, when clamping the EVA interlayer membrane, will not damage the membrane material due to excessive pressure, nor will they cause insecure clamping due to insufficient pressure. This keeps the EVA interlayer membrane in a horizontal state, thus avoiding the impact on the accuracy of experimental data due to the EVA interlayer membrane not being in a horizontal state during the experiment.
[0013] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description
[0014] Figure 1 This is an overall schematic diagram of an embodiment of the present utility model;
[0015] Figure 2 As an embodiment of this utility model Figure 1 A schematic diagram of A in the middle;
[0016] Figure 3 This is a schematic diagram of the motor in an embodiment of the present utility model;
[0017] Figure 4 As an embodiment of this utility model Figure 3 A schematic diagram of B in the middle;
[0018] Figure 5 This is a schematic diagram of the display in an embodiment of the present invention;
[0019] Figure 6 As an embodiment of this utility model Figure 5 A schematic diagram of C in the middle.
[0020] In the diagram: 1. Base; 11. Fixing frame; 2. Mounting frame; 3. Electromagnetic coil; 31. Impact head; 3101. Threaded hole; 32. Rod; 3201. Threaded joint; 33. Connecting rod; 34. Counterweight; 35. Fixing block; 4. Mounting block; 41. Mounting plate; 42. Sliding groove; 43. Spring; 44. Telescopic rod; 45. Movable clamping plate; 5. A rotating rod; 5101. Turntable; 5102. Fixing hole; 5103. Fixing pin; 5104. Rotating handle; 52. B rotating rod; 5201. Motor; 5202. Support frame; 6. Sand bucket; 61. Storage box; 62. Display screen; 63. Controller. Detailed Implementation
[0021] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that the description of these embodiments is for the purpose of helping to understand this utility model, but does not constitute a limitation on this utility model.
[0022] Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0023] Please see the appendix Figure 1 -Appendix Figure 6This utility model discloses an impact resistance testing device for EVA interlayer film, comprising a base 1 and a mounting bracket 2. A fixing bracket 11 is mounted on top of the base 1, and a hole is provided in the middle of the top of the fixing bracket 11. An electromagnetic coil 3 is mounted above the hole, and a rod 32 is installed inside the electromagnetic coil 3. When testing is required, the rod 32 is fixed above the hole by the electromagnetic coil 3. When the test begins, the electromagnetic coil 3 is de-energized, and the rod 32 will fall freely, achieving the effect of impact testing. Simultaneously, an impact head 31 is threadedly connected to one side of the rod 32, and a connecting rod 33 is mounted on the other side of the rod 32. The rod 32 can be lengthened according to testing needs, and a counterweight 34 can be installed on top of it. A fixing block 35 is installed on one side of the connecting rod 33 to fix the counterweight 34 above the connecting rod 33, preventing impact during the testing process. The device prevents shaking, which could affect the test results. Meanwhile, mounting blocks 4 are installed on the upper left and right sides of the mounting frame 2. A sliding groove 42 is provided on one side of each mounting block 4. Mounting plates 41 are installed above and below the sliding groove 42. A telescopic rod 44 is installed above the mounting plate 41, and springs 43 are installed around the telescopic rod 44. A movable clamping plate 45 is installed on one side of the telescopic rod 44. This device provides power and guidance for the movement of the impact head 31 through the combination of the electromagnetic coil 3 and the rod 32. The coordinated action of the sliding groove 42, mounting plate 41, springs 43, telescopic rod 44, and movable clamping plate 45 on the mounting block 4 enables stable clamping and adaptive adjustment of the EVA interlayer, ensuring that the EVA interlayer is in the appropriate position during impact testing, thereby improving the accuracy and reliability of the test.
[0024] In embodiment 1, the rod 32 passes through the hole between the electromagnetic coil 3 and the fixing frame 11. Threaded joints 3201 are provided on one side of the rod 32, the connecting rod 33, and the fixing block 35. Threaded holes 3101 are provided on one side of the rod 32, the connecting rod 33, and the impact head 31. The rod 32 is connected to the threaded hole 3101 on one side of the impact head 31 through the threaded joint 3201. The rod 32 is also connected to the threaded joint 3201 on one side of the connecting rod 33 through the threaded hole 3101 on one side. The counterweight 34 has a hole inside, and the counterweight 34 can be fixed above the connecting rod 33 through the hole. One side of the connecting rod 33 is connected to the threaded joint 3201 on one side of the fixing block 35 through the threaded hole 3101. A movable clamping plate 45 is installed inside the sliding groove 42. A telescopic rod 44 is installed above the mounting plate 41. A spring 43 is installed around the telescopic rod 44. One side of the telescopic rod 44 is connected to the movable clamping plate 45.
[0025] Specifically, threaded joints 3201 are provided on one side of the rod 32, connecting rod 33, and fixing block 35, and threaded holes 3101 are also provided on one side of the rod 32, connecting rod 33, and impact head 31. This ingenious design allows the rod 32 to be tightly connected to the threaded hole 3101 on one side of the impact head 31 through its threaded joint 3201, thereby ensuring that the impact head 31 can accurately impact the EVA interlayer under the drive of the rod 32. Furthermore, the rod 32 is also firmly connected to the threaded joint 3201 on one side of the connecting rod 33 through the threaded hole 3101 on one side. This allows the length of the rod 32 to be flexibly adjusted according to actual testing needs. In addition, the counterweight block 34 has a hole inside, through which it can be easily fixed above the connecting rod 33, while the other side of the connecting rod 33 is connected to the threaded joint 3201 on one side of the fixing block 35 through the threaded hole 3101. This makes the entire structure more stable and avoids damage to components during testing. Loosening can affect test results. Meanwhile, in the mounting blocks 4 on the left and right sides above the mounting frame 2, a movable clamping plate 45 is installed inside the sliding groove 42. A telescopic rod 44 is installed above the mounting plate 41, and a spring 43 is installed around the telescopic rod 44. One side of the telescopic rod 44 is connected to the movable clamping plate 45. This structural design allows the spring 43 to provide appropriate elastic pressure according to the thickness and texture of the film when clamping the EVA interlayer. The telescopic rod 44 plays the role of ensuring uniform pressure transmission. It evenly transmits the elastic force of the spring 43 to the movable clamping plate 45, so that when the movable clamping plate 45 clamps the EVA interlayer, it will not damage the film material due to excessive pressure, nor will it be unable to clamp firmly due to insufficient pressure. In this way, the EVA interlayer can be stably kept in a horizontal state under the synergistic action of the movable clamping plate 45, the telescopic rod 44, and the spring 43, thereby avoiding the impact on the accuracy of experimental data due to the EVA interlayer not being in a horizontal state during the experiment.
[0026] In embodiment 2, a hole is provided in the middle of the mounting block 4, and A rotating rod 5 and B rotating rod 52 are installed inside the hole. A turntable 5101 is installed on one side of the A rotating rod 5. Both the A rotating rod 5101 and the mounting block 4 are provided with fixing holes 5102. A fixing pin 5103 is installed above the fixing holes 5102. A rotating handle 5104 is installed above the turntable 5101. The B rotating rod 52 is connected to the motor 5201. The motor 5201 is installed above the base 1 through the support frame 5202. A sand bucket 6 is installed in the middle of the mounting frame 2 and is located below the impact head 31. A storage box 61 is installed on one side of the mounting frame 2. The storage box 61 stores other types of impact heads 31, as well as connecting rods 33 and counterweights 34. A display screen 62 and a controller 63 are installed on one side of the mounting frame 2.
[0027] Specifically, holes are provided in the middle of both mounting blocks 4, and A rotating rod 5 and B rotating rod 52 are respectively installed inside the holes of the mounting blocks 4. A turntable 5101 is installed on one side of rotating rod A, and fixing holes 5102 are provided above both the turntable 5101 and the mounting block 4. After the EVA interlayer film is fixed to rotating rod A, it is fixed above the fixing holes 5102 by fixing pins 5103 for stable fixation. A rotating handle 5104 is also installed above the turntable 5101 for easy manual rotation. After rotating rod A 5 is fixed, motor 5201 drives rotating rod B 52 to straighten the EVA interlayer film, which is then clamped by movable clamping plate 45. Motor 5201 is stably installed above base 1 via support frame 5202. Additionally, a [missing information - likely a device or component] is installed in the middle of the mounting frame 2. The sand bucket 6 is positioned directly below the impact head 31. When the impact head 31 penetrates the EVA interlayer, the sand bucket 6 can provide some cushioning and support. On one side of the mounting frame 2, a storage box 61 is also installed. This storage box 61 stores other types of impact heads 31, as well as connecting rods 33 and counterweights 34. In this way, when conducting different testing experiments, appropriate impact heads 31, connecting rods 33, and counterweights 34 can be easily selected from the storage box 61 for replacement and combination. At the same time, a display screen 62 and a controller 63 are also installed on one side of the mounting frame 2. The display screen 62 can display various data and results during the testing process in real time, while the controller 63 allows operators to easily set parameters and control the operation of the entire testing device, making the entire testing process more intelligent and convenient. These features provide a strong guarantee for accurately testing the impact resistance of the EVA interlayer.
[0028] Working principle:
[0029] First, the rod 32 is passed through the hole between the electromagnetic coil 3 and the fixing bracket 11. The electromagnetic coil 3 generates magnetic force to firmly fix the rod 32 above the hole. One side of the rod 32 is connected to the impact head 31 by a thread, while the other side is connected to the connecting rod 33. Depending on different testing requirements, a counterweight 34 can be installed on the connecting rod 33 and fixed with a fixing block 35. This can effectively prevent the test results from being affected by the shaking of the parts during the testing process. Holes are provided in the middle of the mounting blocks 4 on the upper left and right sides of the mounting bracket 2. Rotating rods A 5 and B 52 are installed in these holes. Inside, a turntable 5101 is installed on one side of rotating rod A. Fixing holes 5102 are provided above both the turntable 5101 and the mounting block 4. The turntable 5101 can be fixed by installing fixing pins 5103 above the fixing holes 5102. A rotating handle 5104 above the turntable 5101 allows for manual rotation by the operator. Motor 5201 is mounted on the base 1 via a support frame 5202 and is connected to rotating rod B 52. When testing the EVA interlayer membrane, motor 5201 drives rotating rod B 52 to rotate, straightening the EVA interlayer membrane. Then, a movable... The clamping plate 45 holds the EVA interlayer in place. The movable clamping plate 45 is mounted on the mounting plate 41 via a telescopic rod 44 and a spring 43. When clamping the EVA interlayer, the spring 43 provides appropriate elastic pressure based on the film's thickness and texture, while the telescopic rod 44 ensures uniform pressure distribution, keeping the EVA interlayer stably horizontal. When the test begins, the electromagnetic coil 3 is de-energized, and the rod 32 falls freely under gravity, driving the impact head 31 to impact the EVA interlayer. When the impact head 31 penetrates the EVA interlayer, the sand bucket 6 provides some cushioning and support. Furthermore... The storage box 61 on one side of the mounting frame 2 stores different types of impact heads 31, connecting rods 33, and counterweights 34. This allows operators to easily select appropriate parts from the storage box 61 for replacement and combination during different testing experiments. Meanwhile, the display screen 62 on one side of the mounting frame 2 can display various data and results during the testing process in real time. The controller 63 allows operators to easily set parameters and control the operation of the entire testing device. Through the coordinated work of these components, the device can accurately test the impact resistance performance of the EVA interlayer. At this point, the entire workflow is complete.
[0030] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.
[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.
[0032] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments.
[0033] For those skilled in the art, various changes, modifications, substitutions, and alterations to these embodiments without departing from the principles and spirit of this utility model will still fall within the protection scope of this utility model.
Claims
1. An impact resistance testing device for EVA interlayer, comprising a base (1) and a mounting bracket (2), characterized in that: A fixing frame (11) is installed above the base (1). A hole is provided in the middle of the top of the fixing frame (11). An electromagnetic coil (3) is provided above the hole. A rod (32) is provided inside the electromagnetic coil (3). An impact head (31), a connecting rod (33), a counterweight (34), and a fixing block (35) are respectively installed on both sides of the rod (32). Mounting blocks (4) are installed on the upper left and right sides of the mounting frame (2). A sliding groove (42) is provided on one side of the mounting block (4). Mounting plates (41) are provided above and below the sliding groove (42). A spring (43), a telescopic rod (44), and a movable clamping plate (45) are installed on the upper side of the mounting plate (41).
2. The impact resistance testing device for EVA interlayer according to claim 1, characterized in that: The rod (32) passes through the hole between the electromagnetic coil (3) and the fixing frame (11). The rod (32), the connecting rod (33) and the fixing block (35) are all provided with threaded joints (3201) on one side. The rod (32), the connecting rod (33) and the impact head (31) are all provided with threaded holes (3101) on one side. The rod (32) is connected to the threaded hole (3101) on one side of the impact head (31) through the threaded joint (3201). The rod (32) is connected to the threaded joint (3201) on one side of the connecting rod (33) through the threaded hole (3101) on one side. The counterweight (34) is provided with a hole inside. The counterweight (34) can be fixed above the connecting rod (33) through the hole. The connecting rod (33) is connected to the threaded joint (3201) on one side of the fixing block (35) through the threaded hole (3101) on one side.
3. The impact resistance testing device for EVA interlayer according to claim 1, characterized in that: The sliding groove (42) is equipped with a movable clamping plate (45), and a telescopic rod (44) is installed above the mounting plate (41). A spring (43) is installed around the telescopic rod (44), and one side of the telescopic rod (44) is connected to the movable clamping plate (45).
4. The impact resistance testing device for EVA interlayer according to claim 1, characterized in that: The mounting block (4) has a hole in the middle, and A rotating rod (5) and B rotating rod (52) are installed inside the hole. A turntable (5101) is installed on one side of the A rotating rod (5). The turntable (5101) and the mounting block (4) are both provided with fixing holes (5102). A fixing pin (5103) is installed above the fixing hole (5102). A rotating handle (5104) is installed above the turntable (5101).
5. The impact resistance testing device for EVA interlayer according to claim 4, characterized in that: The B rotating rod (52) is connected to the motor (5201), and the motor (5201) is mounted above the base (1) via a support frame (5202).
6. The impact resistance testing device for an EVA interlayer according to claim 1, characterized in that: A sand bucket (6) is installed in the middle of the mounting frame (2) and is located below the impact head (31). A storage box (61) is installed on one side of the mounting frame (2). The storage box (61) contains various types of impact heads (31), as well as connecting rods (33) and counterweights (34). A display screen (62) and a controller (63) are installed on one side of the mounting frame (2).