Device for testing air tightness of hot melt adhesive film

Abstract

The utility model belongs to the technical field of hot melt adhesive films, in particular to a hot melt adhesive film air tightness testing device, which comprises a water tank, a fixing cover and a fixing device, the fixing cover is positioned right above the water tank, and the upper surface of the fixing cover is communicated with an air pipe; a fixing device is arranged on the surface of the fixing cover and comprises a frame, the frame is located under the fixing cover, inserting blocks are fixedly connected to the four corners of the upper surface of the frame and inserted into the inner wall of the fixing cover, two adjusting devices are arranged on the surface of the water tank and the surface of the fixing cover, and each adjusting device comprises a threaded rod. The bottom end of the threaded rod is rotationally connected with the upper surface of the water tank; by arranging the whole device, a hot melt adhesive film can be fixed, meanwhile, the hot melt adhesive film can be extruded in the fixing cover through the positioning groove, the situation that the sealing performance is insufficient is reduced, operation steps can be reduced through the arrangement of the spring, the testing time is saved, whether leakage occurs or not can be visually felt through the detection mode, and the detection efficiency is improved. And the judgment time can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of hot melt adhesive films, in particular to a device for testing the air tightness of hot melt adhesive films. Background Art

[0002] Hot melt adhesive film is a film product with a substrate (such as single silicone release paper) or without a substrate. Its physical state changes with temperature within a certain temperature range, but its chemical properties remain unchanged. This material is non-toxic and odorless and is an environmentally friendly chemical adhesive product. Hot melt adhesive film can be divided into EVA film, PA film, PES film, TPU film and other types according to the type of hot melt adhesive used.

[0003] With respect to the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: when producing hot-melt adhesive films, it is necessary to perform sampling inspection on the same batch of hot-melt adhesive films, among which air tightness inspection is an important inspection item. Conventional testing equipment has a complex structure and cumbersome operating steps, resulting in the problem of insufficient practicality of the equipment. Therefore, in view of the above-mentioned problems, a hot-melt adhesive film air tightness testing device is proposed. Utility Model Content

[0004] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a hot melt adhesive film air tightness testing device described in the utility model comprises a water tank, a fixed cover and a fixing device, the fixed cover is located directly above the water tank, and the upper surface of the fixed cover is connected to an air pipe; the surface of the fixed cover is provided with a fixing device, and the fixing device comprises a frame, the frame is located directly below the fixed cover, and the four corners of the upper surface of the frame are fixedly connected with plug blocks, and the plug blocks are inserted into the inner wall of the fixed cover, and the upper surface of the fixed cover is fixedly connected with two placement plates, and the inner wall of the placement plate is slidably connected with two card blocks, and the card blocks are pushed to slide on the inner wall of the placement plate, and the card blocks are inserted into the inner wall of the card blocks. By setting the frame, the plug blocks, the placement plate and the card blocks, the hot melt adhesive film can be fixed, thereby facilitating the testing of the hot melt adhesive film.

[0006] Preferably, a positioning groove is provided at the bottom end of the fixed cover, and the frame is inserted into the inner wall of the positioning groove of the fixed cover. When the frame drives the hot melt adhesive film to move, the hot melt adhesive film is squeezed into the inner wall of the positioning groove. The opening of the positioning groove can increase the sealing between the hot melt adhesive film and the fixed cover.

[0007] Preferably, a fixing block is fixedly connected to a position near the card block on the upper surface of the fixing cover, and the card block is inserted into the inner wall of the fixing block. When the card block slides, the card block is inserted into the inner wall of the fixing block, and the fixing block can support the card block.

[0008] Preferably, two springs are fixedly connected to one end of the two blocks that are close to each other, and the two springs are symmetrically distributed compared to the central axis of the block. When the block is used, the springs will rebound when the block is released, and the springs drive the block to slide and limit the position of the block at the same time.

[0009] Preferably, a storage groove is provided on the surface of the placement plate, the inner wall of the storage groove of the placement plate is slidably connected to the surface of the card block, and a push block is fixedly connected to the side wall of the card block. When the card block needs to be moved, the push block is pushed to allow the push block to drive the card block to slide. The setting of the push block can facilitate the movement of the card block.

[0010] Preferably, the surfaces of the water tank and the fixed cover are provided with two adjusting devices, the adjusting devices include a threaded rod, the bottom end of the threaded rod is rotatably connected to the upper surface of the water tank, the surface of the threaded rod is threadedly connected to a movable frame, the bottom end of the movable frame is fixedly connected to the upper surface of the fixed cover, a fixed frame is fixedly connected to a position on the upper surface of the water tank near the threaded rod, the inner wall of the fixed frame is rotatably connected to the surface of the threaded rod, the rotation of the threaded rod drives the movable frame to slide, and the movable frame drives the fixed cover to move, and by arranging the threaded rod, the fixed frame and the movable frame, the position of the fixed cover can be conveniently adjusted to complete the test.

[0011] Preferably, the side wall of the fixing frame is fixedly connected with a support plate, and a motor is inserted into the inner wall of the support plate. The output end of the motor and the surface of the threaded rod are meshed with each other. When the threaded rod is used, the motor on the support plate is started, and the output end of the motor drives the threaded rod to rotate. By setting the motor, the threaded rod can be driven to rotate.

[0012] The utility model is beneficial in that:

[0013] 1. When the hot-melt adhesive film needs to be tested, the hot-melt adhesive film is covered on the frame, and then the push block is pushed to drive the card block to slide, the card block drives the spring to contract, and the card block slides on the inner wall of the storage groove of the placement plate. After the card block slides to a suitable position, the frame is pushed to drive the plug block to slide, and the frame will squeeze the hot-melt adhesive film into the inner wall of the positioning groove, and the plug block is inserted into the inner wall of the fixed cover, and then the push block spring is released to drive the card block to slide, and the card block is inserted into the inner wall of the plug block and the fixed block, and then the fixed cover is moved toward the water tank, and the fixed cover drives the frame and the hot-melt adhesive film to move When the hot melt adhesive film is immersed in the water in the water tank, the gas is allowed to enter the fixed cover through the air pipe. The gas will be squeezed on the hot melt adhesive film. If there are holes in the hot melt adhesive film, the gas will enter the water, thereby generating bubbles to complete the detection. By setting up the entire device, the hot melt adhesive film can be fixed. At the same time, the beginning of the positioning groove can allow the hot melt adhesive film to be squeezed in the fixed cover to reduce the lack of sealing. The setting of the spring can reduce the operating steps and save testing time. This detection method can intuitively feel whether a leak occurs, and can also save judgment time.

[0014] 2. When the fixed cover needs to be moved, the motor on the support plate is started, the motor drives the threaded rod to rotate, the threaded rod rotates on the inner wall of the fixed frame and the surface of the water tank, the rotation of the threaded rod also rotates on the inner wall of the movable frame, the movable frame drives the fixed cover to move, and the fixed cover enters the water in the water tank. By setting the entire device, the position of the fixed cover can be easily moved, and the fixed cover can be supported. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of a fixed cover in a device for testing the air tightness of a hot melt adhesive film;

[0017] Figure 2 It is a schematic diagram of the side structure of a fixed cover in a hot melt adhesive film air tightness testing device;

[0018] Figure 3 A hot melt adhesive film air tightness test device Figure 2 A schematic diagram of the structure at A;

[0019] Figure 4 It is a schematic diagram of the top view of the structure of a fixed cover in a device for testing the air tightness of a hot melt adhesive film;

[0020] Figure 5 A hot melt adhesive film air tightness test device Figure 4 Schematic diagram of the structure at point B.

[0021] In the figure: 1, water tank; 2, fixed cover; 3, air pipe; 4, fixing device; 41, frame; 42, plug block; 43, placement plate; 44, clamp block; 45, positioning groove; 46, fixed block; 47, spring; 48, push block; 49, storage groove; 5, adjustment device; 51, threaded rod; 52, fixed frame; 53, movable frame; 54, support plate; 55, motor. 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 1-5 As shown, a hot melt adhesive film air tightness testing device comprises a water tank 1, a fixed cover 2 and a fixing device 4, wherein the fixed cover 2 is located directly above the water tank 1, and the upper surface of the fixed cover 2 is connected to an air pipe 3; the surface of the fixed cover 2 is provided with a fixing device 4, and the fixing device 4 comprises a frame 41, and the frame 41 is located directly below the fixed cover 2, and the four corners of the upper surface of the frame 41 are fixedly connected with plug blocks 42, and the plug blocks 42 are inserted into the inner wall of the fixed cover 2, and the upper surface of the fixed cover 2 is fixedly connected with two A placement plate 43, the inner wall of which is slidably connected to two clamping blocks 44; when working, the hot melt adhesive film is spread on the upper surface of the frame 41, and then the frame 41 is pushed to allow the frame 41 to drive the plug 42 to slide, and the plug 42 is inserted into the inner wall of the fixed cover 2, and then the clamping block 44 is pushed to allow the clamping block 44 to slide on the inner wall of the placement plate 43, and the clamping block 44 is inserted into the inner wall of the plug 42. By setting the frame 41, the plug 42, the placement plate 43 and the clamping block 44, the hot melt adhesive film can be fixed, thereby facilitating the testing of the hot melt adhesive film.

[0024] A positioning groove 45 is provided at the bottom end of the fixed cover 2, and the frame 41 is inserted into the inner wall of the positioning groove 45 of the fixed cover 2; during operation, the hot melt adhesive film is squeezed into the inner wall of the positioning groove 45, and the opening of the positioning groove 45 can increase the sealing between the hot melt adhesive film and the fixed cover 2.

[0025] A fixing block 46 is fixedly connected to a position near the clamping block 44 on the upper surface of the fixing cover 2 , and the clamping block 44 is inserted into the inner wall of the fixing block 46 ; when working, the clamping block 44 is inserted into the inner wall of the fixing block 46 , and the fixing block 46 can support the clamping block 44 .

[0026] Two springs 47 are fixedly connected to one end of the two blocks 44 close to each other, and the two springs 47 are symmetrically distributed compared to the central axis of the block 44; when working, the block 44 drives the spring 47 to contract, and when the block 44 is used, the spring 47 will rebound when the block 44 is released. The spring 47 drives the block 44 to slide and limits the position of the block 44 at the same time.

[0027] A receiving groove 49 is provided on the surface of the placement plate 43, and the inner wall of the receiving groove 49 of the placement plate 43 is slidably connected to the surface of the card block 44, and a push block 48 is fixedly connected to the side wall of the card block 44; when working, the push block 48 is pushed to allow the push block 48 to drive the card block 44 to slide, and the card block 44 slides on the inner wall of the receiving groove 49, and the setting of the push block 48 can facilitate the movement of the card block 44.

[0028] The surfaces of the water tank 1 and the fixed cover 2 are provided with two adjusting devices 5, and the adjusting devices 5 include a threaded rod 51, the bottom end of the threaded rod 51 is rotatably connected to the upper surface of the water tank 1, the surface of the threaded rod 51 is threadedly connected to a movable frame 53, the bottom end of the movable frame 53 is fixedly connected to the upper surface of the fixed cover 2, and a fixed frame 52 is fixedly connected to the upper surface of the water tank 1 near the threaded rod 51, and the inner wall of the fixed frame 52 is rotatably connected to the surface of the threaded rod 51; during operation, the threaded rod 51 is rotated to allow the threaded rod 51 to rotate on the inner wall of the fixed frame 52 and the upper surface of the water tank 1, and the rotation of the threaded rod 51 will drive the movable frame 53 to slide, and the movable frame 53 drives the fixed cover 2 to move. By setting the threaded rod 51, the fixed frame 52 and the movable frame 53, the position of the fixed cover 2 can be conveniently adjusted to complete the test.

[0029] The side wall of the fixing frame 52 is fixedly connected with a supporting plate 54, and a motor 55 is inserted into the inner wall of the supporting plate 54. The output end of the motor 55 and the surface of the threaded rod 51 are meshed with each other. When working, the motor 55 on the supporting plate 54 is started, and the output end of the motor 55 drives the threaded rod 51 to rotate. By setting the motor 55, the threaded rod 51 can be driven to rotate.

[0030] Working principle: when the hot melt adhesive film needs to be tested, the hot melt adhesive film is covered on the frame 41, and then the push block 48 is pushed to allow the push block 48 to drive the card block 44 to slide, and the card block 44 drives the spring 47 to contract, and the card block 44 slides on the inner wall of the storage groove 49 of the placement plate 43. After the card block 44 slides to a suitable position, the frame 41 is pushed to allow the frame 41 to drive the plug block 42 to slide, and the frame 41 will squeeze the hot melt adhesive film into the inner wall of the positioning groove 45, and the plug block 42 is inserted into the inner wall of the fixed cover 2. Then release the push block 48 and the spring 47 to drive the card block 44 to slide, and the card block 44 is inserted into the inner wall of the plug block 42 and the fixed block 46. Then let the fixed cover 2 move toward the water tank 1, and the fixed cover 2 drives the frame 41 and the hot melt adhesive film to move. When the hot melt adhesive film is immersed in the water in the water tank 1, let the gas enter the fixed cover 2 through the air pipe 3, and the gas will be squeezed on the hot melt adhesive film. If the hot melt adhesive film exists In the hole, gas will enter the water, thereby generating bubbles to complete the detection. By setting up the entire device, the hot melt adhesive film can be fixed. At the same time, the beginning of the positioning groove 45 can allow the hot melt adhesive film to be squeezed into the fixed cover 2 to reduce the situation of insufficient sealing. The setting of the spring 47 can reduce the operating steps and save testing time. This detection method can intuitively feel whether a leak occurs and can also save judgment time. When it is necessary to move the position of the fixed cover 2, start the motor 55 on the support plate 54, and the motor 55 drives the threaded rod 51 to rotate. The threaded rod 51 rotates on the inner wall of the fixed frame 52 and the surface of the water tank 1. The rotation of the threaded rod 51 will also rotate on the inner wall of the moving frame 53. The moving frame 53 drives the fixed cover 2 to move, and the fixed cover 2 enters the water of the water tank 1. By setting up the entire device, the position of the fixed cover 2 can be easily moved, and the fixed cover 2 can be supported.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A device for testing the air tightness of a hot melt adhesive film, comprising a water tank (1), a fixing cover (2) and a fixing device (4), wherein the fixing cover (2) is located directly above the water tank (1), and an air pipe (3) is connected to the upper surface of the fixing cover (2); the characteristics are: A fixing device (4) is provided on the surface of the fixed cover (2), and the fixing device (4) comprises a frame (41). The frame (41) is located directly below the fixed cover (2). Four corners of the upper surface of the frame (41) are fixedly connected with plug blocks (42). The plug blocks (42) are inserted into the inner wall of the fixed cover (2). Two placement plates (43) are fixedly connected to the upper surface of the fixed cover (2), and two clamping blocks (44) are slidably connected to the inner wall of the placement plate (43).

2. A hot melt adhesive film air tightness testing device according to claim 1, characterized in that: A positioning groove (45) is provided at the bottom end of the fixed cover (2), and the frame (41) is inserted into the inner wall of the positioning groove (45) of the fixed cover (2).

3. The device for testing the air tightness of a hot melt adhesive film according to claim 1, characterized in that: A fixing block (46) is fixedly connected to a position of the upper surface of the fixing cover (2) close to the clamping block (44), and the clamping block (44) is inserted into the inner wall of the fixing block (46).

4. The device for testing the air tightness of a hot melt adhesive film according to claim 1, characterized in that: Two springs (47) are fixedly connected to one end of the two clamping blocks (44) that are close to each other, and the two springs (47) are symmetrically distributed relative to the central axis of the clamping blocks (44).

5. The device for testing the air tightness of a hot melt adhesive film according to claim 1, characterized in that: A receiving groove (49) is provided on the surface of the placement plate (43); the inner wall of the receiving groove (49) of the placement plate (43) is slidably connected to the surface of the clamping block (44); and a push block (48) is fixedly connected to the side wall of the clamping block (44).

6. A hot melt adhesive film air tightness testing device according to claim 5, characterized in that: Two adjusting devices (5) are provided on the surfaces of the water tank (1) and the fixed cover (2), and the adjusting device (5) comprises a threaded rod (51), the bottom end of the threaded rod (51) is rotatably connected to the upper surface of the water tank (1), the surface of the threaded rod (51) is threadedly connected to a movable frame (53), the bottom end of the movable frame (53) is fixedly connected to the upper surface of the fixed cover (2), and a fixed frame (52) is fixedly connected to the upper surface of the water tank (1) near the threaded rod (51), and the inner wall of the fixed frame (52) is rotatably connected to the surface of the threaded rod (51).

7. A hot melt adhesive film air tightness testing device according to claim 6, characterized in that: A support plate (54) is fixedly connected to the side wall of the fixing frame (52), a motor (55) is inserted into the inner wall of the support plate (54), and the output end of the motor (55) and the surface of the threaded rod (51) are meshed with each other.

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