Electromagnetic shielding film shielding performance testing device

Abstract

The utility model discloses a device for testing the shielding performance of an electromagnetic shielding film, which relates to the technical field of electromagnetic shielding film testing and comprises a film transmission mechanism used for transmitting the electromagnetic shielding film; the adjustable light source mechanism comprises a plate-shaped light source, an elastic rope, a marking pen, a shading plate, a two-way screw rod, a second motor and a guide rod; the plate-shaped light source is fixedly arranged on the inner side of the first fixing groove and attached to the back face of the electromagnetic shielding film to be detected, the elastic rope is fixedly connected to the top of the front face of the mounting frame, and the marking pen is fixedly connected to the bottom end of the elastic rope. Complete irradiation of the electromagnetic shielding film to be detected in the transmission process can be guaranteed, the situation that the side edge is damaged and cannot be effectively detected is avoided, meanwhile, the damaged position can be determined and marked without shutdown, and in addition, the electromagnetic shielding film detection device can be suitable for detection of electromagnetic shielding films with different widths.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic shielding film testing technology, and in particular to an electromagnetic shielding film shielding performance testing device. Background Technology

[0002] Electromagnetic shielding film is used to protect signals or currents in circuits from external interference and plays a stabilizing role. During the production process of electromagnetic shielding film, it is necessary to coat the electromagnetic film. After the coating is completed, the finished product needs to be inspected for quality.

[0003] A search revealed that utility model patent CN219573889U discloses a thin-film electromagnetic shielding performance testing device, comprising a worktable, a testing device, and a light source receiving plate. A tensioning roller is provided in front of the worktable, a bracket is provided on the upper surface of the worktable, a limit block is provided on the lower surface of the support plate, a rotating cylinder is engaged in the groove of the limit block, and the testing device is connected to the rotating cylinder by a thread. A signal transmitter is provided inside the testing device, a light source transmitter is provided outside the testing device, a humidity sensor is provided on the outer surface of the testing device, a slot is provided on the upper surface of the worktable, and a signal receiver is provided on the rear surface of the inner wall of the slot.

[0004] Although the arrangement of the light source emitter and light source receiver in the above-mentioned shielding performance testing device can determine whether there is damage to the electromagnetic shielding film by irradiation, the two sides of the electromagnetic shielding film are located inside the two guide grooves during transmission and cannot be effectively irradiated. Therefore, it is easy for the side damage of the electromagnetic shielding film to go undetected, and the actual testing effect is not ideal.

[0005] Therefore, it is necessary to invent an electromagnetic shielding film shielding performance testing device to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide an electromagnetic shielding film shielding performance testing device that can ensure complete irradiation of the electromagnetic shielding film under test during transmission, thereby avoiding the situation where side damage is not effectively detected. At the same time, the damaged location can be determined and marked without stopping the machine. In addition, it can be applied to the testing of electromagnetic shielding films of different widths, thus solving the problem mentioned in the background art that the two sides of the electromagnetic shielding film are located inside two guide grooves during transmission and cannot be effectively irradiated, so the side damage of the electromagnetic shielding film is prone to be not effectively detected, and the actual testing effect is not ideal.

[0007] According to one aspect of this disclosure, the following technical solution is provided: an electromagnetic shielding film shielding performance testing device, comprising:

[0008] A membrane transport mechanism for transporting an electromagnetic shielding membrane;

[0009] An adjustable light source mechanism, comprising a plate-shaped light source, an elastic rope, a marker pen, a light shield, a bidirectional screw, a second motor, and a guide rod;

[0010] The plate-shaped light source is fixedly mounted inside the first fixing groove and adheres to the back of the electromagnetic shielding film to be tested. The elastic rope is fixedly connected to the top front of the mounting frame, and the marker pen is fixedly connected to the bottom end of the elastic rope. Two light-shielding plates are provided, and the two light-shielding plates slide vertically against the front of the back plate. The bidirectional screw passes through the mounting frame and is rotatably connected to the mounting frame via bearings. The two light-shielding plates are respectively driven and sleeved at both ends of the bidirectional screw. The second motor is fixedly mounted on the top of the mounting frame and drivenly connected to the bidirectional screw. The guide rod is fixedly mounted through the mounting frame, and both light-shielding plates are slidably sleeved on the outside of the guide rod.

[0011] A testing facility for testing electromagnetic shielding films.

[0012] According to at least one embodiment of the electromagnetic shielding membrane shielding performance testing device of the present disclosure, the membrane transmission mechanism includes a mounting frame and a back plate, wherein the back plate is fixedly disposed inside the mounting frame.

[0013] According to at least one embodiment of the electromagnetic shielding membrane shielding performance testing device of the present disclosure, the membrane transmission mechanism further includes a first fixing groove and a second fixing groove, wherein the first fixing groove is formed on the left side of the front of the back plate and the second fixing groove is formed on the right side of the front of the back plate.

[0014] According to at least one embodiment of the electromagnetic shielding film shielding performance testing device of the present disclosure, the film transmission mechanism further includes two transmission components, which are respectively located at both ends of the inner side of the mounting frame. Each transmission component includes two conveying rollers and a first motor. The two conveying rollers are rotatably nested inside the mounting frame through bearings. The first motor is fixedly installed on the top of the mounting frame and is connected to the adjacent conveying rollers for transmission.

[0015] According to at least one embodiment of the electromagnetic shielding film shielding performance testing device of the present disclosure, the testing mechanism includes a signal receiver, a fixed arm and a signal transmitter. The signal receiver is fixedly disposed inside the second fixed groove, the fixed arm is fixedly disposed on the right side of the front of the mounting frame, and the signal transmitter is fixedly disposed at the end of the fixed arm.

[0016] The technical effects and advantages of this utility model are as follows:

[0017] This invention features an adjustable light source mechanism. During the transmission of the electromagnetic shielding film under test by two transmission components, two light-shielding plates are positioned by the top and bottom of the electromagnetic shielding film, respectively. These plates also block the portion of the plate-shaped light source not obstructed by the electromagnetic shielding film, preventing it from affecting the eyes of the testing personnel. During transmission, the testing personnel continuously observe the surface of the plate-shaped light source. If a bright spot is found on the surface of the electromagnetic shielding film, indicating that the light from the plate-shaped light source is shining through a damaged area, the damaged location is marked with a marker pen as the electromagnetic shielding film moves. When testing electromagnetic shielding films of different widths is required, a second motor drives a bidirectional screw to rotate, causing the two light-shielding plates, guided by a guide rod, to move closer or further apart to adjust the positioning and blocking width. Compared to existing technologies, this invention ensures complete illumination of the electromagnetic shielding film during transmission, preventing undetected side damage. Furthermore, the damaged location can be determined and marked without stopping the machine, and it is applicable to the testing of electromagnetic shielding films of different widths. Attached Figure Description

[0018] The accompanying drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0019] Figure 1 This is a schematic diagram of the overall structure of an electromagnetic shielding film shielding performance testing device according to one embodiment of the present disclosure.

[0020] Figure 2 This is a schematic diagram of the membrane transmission mechanism of an electromagnetic shielding membrane shielding performance testing device according to one embodiment of the present disclosure.

[0021] Figure 3 This is a schematic diagram of the adjustable light source mechanism and the testing mechanism of an electromagnetic shielding film shielding performance testing device according to one embodiment of the present disclosure.

[0022] The specific labels in the attached figures are as follows:

[0023] 1. Membrane transfer mechanism; 11. Mounting frame; 12. Back plate; 13. First fixing groove; 14. Second fixing groove; 15. Conveyor roller; 16. First motor;

[0024] 2. Adjustable light source mechanism; 21. Plate-shaped light source; 22. Elastic rope; 23. Marker pen; 24. Light shield; 25. Bidirectional screw; 26. Second motor; 27. Guide rod;

[0025] 3. Testing mechanism; 31. Signal receiver; 32. Fixing arm; 33. Signal transmitter. Detailed Implementation

[0026] For descriptive purposes, this disclosure may use spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” and “side (e.g., as in a “sidewall”)” to describe the relationship between one component and another component as shown in the accompanying drawings. In addition to the orientations depicted in the drawings, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the drawings is flipped, a component described as “below” or “under” other components or features would subsequently be positioned “above” said other components or features. Thus, the exemplary term “below” can encompass both “above” and “below” orientations. Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or in other orientations), thus interpreting the spatial relative descriptive terms used herein accordingly.

[0027] Figure 1 This is a schematic diagram of the overall structure of an electromagnetic shielding film shielding performance testing device according to one embodiment of the present disclosure.

[0028] Figure 2 This is a schematic diagram of the membrane transmission mechanism 1 of an electromagnetic shielding membrane shielding performance testing device according to one embodiment of the present disclosure.

[0029] Figure 3 This is a schematic diagram of the adjustable light source mechanism 2 and the testing mechanism 3 of an electromagnetic shielding film shielding performance testing device according to one embodiment of the present disclosure.

[0030] like Figures 1-3 As shown, the electromagnetic shielding membrane shielding performance testing device disclosed herein may include components such as a membrane transmission mechanism 1, an adjustable light source mechanism 2, and a testing mechanism 3.

[0031] like Figure 2 As shown in this disclosure, the membrane transfer mechanism 1 includes a mounting frame 11, a back plate 12, a first fixing groove 13, a second fixing groove 14, and two transfer components. The back plate 12 is fixedly disposed inside the mounting frame 11. The first fixing groove 13 is opened on the left side of the front of the back plate 12, and the second fixing groove 14 is opened on the right side of the front of the back plate 12. The two transfer components are respectively located at both ends of the inner side of the mounting frame 11. Each transfer component includes two conveying rollers 15 and a first motor 16. The two conveying rollers 15 are rotatably nested inside the mounting frame 11 through bearings. The first motor 16 is fixedly disposed on the top of the mounting frame 11 and is connected to the adjacent conveying roller 15 for transmission.

[0032] This allows the electromagnetic shielding film to be tested to be threaded between the two left conveyor rollers 15 and then out between the two right conveyor rollers 15. Subsequently, when the first motor 16 drives the adjacent conveyor rollers 15 to rotate, the electromagnetic shielding film to be tested is continuously conveyed.

[0033] like Figure 3 As shown, in a preferred embodiment, the adjustable light source mechanism 2 includes a plate-shaped light source 21, an elastic rope 22, a marker pen 23, a light-shielding plate 24, a bidirectional screw 25, a second motor 26, and a guide rod 27. The plate-shaped light source 21 is fixedly disposed inside the first fixing groove 13 and adheres to the back of the electromagnetic shielding film to be tested. The elastic rope 22 is fixedly connected to the top front of the mounting frame 11, and the marker pen 23 is fixedly connected to the bottom end of the elastic rope 22. Two light-shielding plates 24 are provided, and the two light-shielding plates 24 slide vertically against the front of the back plate 12. The bidirectional screw 25 passes through the mounting frame 11 and is rotatably connected to the mounting frame 11 via bearings. The two light-shielding plates 24 are respectively driven and sleeved at both ends of the outer side of the bidirectional screw 25. The second motor 26 is fixedly disposed at the top of the mounting frame 11 and drivenly connected to the bidirectional screw 25. The guide rod 27 is fixedly disposed through the mounting frame 11, and both light-shielding plates 24 are slidably sleeved on the outer side of the guide rod 27.

[0034] Therefore, during the transmission of the electromagnetic shielding film under test by the two transmission components, the two light-shielding plates 24 are respectively limited by the top and bottom of the electromagnetic shielding film, and at the same time, they block the part of the plate-shaped light source 21 that is not blocked by the electromagnetic shielding film, so as to avoid the plate-shaped light source 21 affecting the eyes of the inspector. During the transmission of the electromagnetic shielding film, the inspector continuously observes the surface of the plate-shaped light source 21. If a bright spot is found on the surface of the electromagnetic shielding film, that is, the light of the plate-shaped light source 21 is exposed through the damaged position on the electromagnetic shielding film, the damaged position is marked by a marker pen 23 during the movement of the electromagnetic shielding film. When it is necessary to test electromagnetic shielding films of different widths, the second motor 26 drives the bidirectional screw 25 to rotate, thereby causing the two light-shielding plates 24 guided by the guide rod 27 to move closer or further apart to adjust the limiting and blocking width. Compared with the prior art, it can ensure complete illumination of the electromagnetic shielding film under test during the transmission process, thereby avoiding the situation where side damage is not effectively detected. At the same time, the damaged position can be determined and marked without stopping the machine. In addition, it can be applied to the testing of electromagnetic shielding films of different widths.

[0035] like Figure 3 As shown in this disclosure, the testing mechanism 3 includes a signal receiver 31, a fixed arm 32, and a signal transmitter 33. The signal receiver 31 is fixedly disposed inside the second fixed groove 14, the fixed arm 32 is fixedly disposed on the right side of the front of the mounting bracket 11, and the signal transmitter 33 is fixedly disposed at the end of the fixed arm 32.

[0036] Therefore, during the movement of the electromagnetic shielding film under test, the signal receiver 31 continuously sends out signals. If the electromagnetic shielding film under test is damaged and causes shielding failure, the signal transmitter 33 receives the signal. Thus, the shielding performance of the electromagnetic shielding film under test can be determined by the signal reception status of the signal transmitter 33.

[0037] It should also be noted that any content not described in detail in this specification is prior art known to those skilled in the art.

[0038] Those skilled in the art should understand that the above embodiments are merely for illustrating the present disclosure and are not intended to limit the scope of the disclosure. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present disclosure.

Claims

1. An electromagnetic shielding film shielding performance test device characterized by, The utility model relates to an electromagnetic shielding film testing device, including: a film transmission mechanism for transmitting an electromagnetic shielding film; an adjustable light source mechanism including a plate-shaped light source, an elastic cord, a marker pen, a light shield, a bidirectional screw rod, a second motor, and a guide rod; the plate-shaped light source is fixedly arranged inside a first fixed groove and adheres to the back of the electromagnetic shielding film to be tested, the elastic cord is fixedly connected to the top of the front of the mounting frame, the marker pen is fixedly connected to the bottom end of the elastic cord, the light shield is provided with two, the two light shields are slidably adhered to the front of the back plate in the vertical direction, the bidirectional screw rod penetrates through the mounting frame and is rotatably connected to the mounting frame through a bearing, the two light shields are respectively transmission sleeve-connected and arranged at the two ends outside the bidirectional screw rod, the second motor is fixedly arranged at the top of the mounting frame and is transmission-connected with the bidirectional screw rod, the guide rod is fixedly penetrated through the mounting frame, and the two light shields are slidably sleeve-connected and arranged outside the guide rod; and a testing mechanism for testing the electromagnetic shielding film.

2. The electromagnetic shielding film shielding performance test apparatus according to claim 1, characterized by: The film transmission mechanism includes a mounting frame and a back plate, and the back plate is fixedly arranged inside the mounting frame.

3. The electromagnetic shielding film shielding performance test apparatus according to claim 2, characterized by: The film transmission mechanism further includes a first fixed groove and a second fixed groove, the first fixed groove is opened on the left side of the front of the back plate, and the second fixed groove is opened on the right side of the front of the back plate.

4. The electromagnetic shielding film shielding performance test apparatus according to claim 3, characterized by: The film transmission mechanism further includes two transmission assemblies, the two transmission assemblies are respectively located at the two ends inside the mounting frame, any one transmission assembly includes two conveying rollers and a first motor, the two conveying rollers are rotatably nested and arranged inside the mounting frame through a bearing, and the first motor is fixedly arranged at the top of the mounting frame and is transmission-connected with the adjacent conveying roller.

5. The electromagnetic shielding film shielding performance test apparatus according to claim 4, characterized by: The testing mechanism includes a signal receiver, a fixed arm, and a signal transmitter, the signal receiver is fixedly arranged inside the second fixed groove, the fixed arm is fixedly arranged on the right side of the front of the mounting frame, and the signal transmitter is fixedly arranged at the end of the fixed arm.

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