Waterproof sealing performance detection equipment for EVA (Ethylene Vinyl Acetate) bag

Abstract

The utility model discloses an EVA package waterproof sealing performance detection device, and specifically relates to the EVA package performance detection technology field, the EVA package waterproof sealing performance detection device comprises a bottom plate, the middle part of the upper end of the bottom plate is fixedly connected with a box body, the inner surface of the box body is rotatably connected with a rotating assembly, and the upper side of the box body is movably connected with a box cover. The front side of the inner surface of the bottom plate is rotationally connected with a sealing assembly, and the front side wall of the inner surface of the bottom plate is fixedly connected with a spraying mechanism. According to the waterproof sealing performance detection equipment for the EVA bag, the EVA bag can be clamped by arranging the rotating assembly, it is ensured that the accuracy of a detection result is not affected by displacement of the EVA bag in the detection process, meanwhile, the EVA bag can be driven to rotate when spraying waterproof detection is carried out, spraying water uniformly covers all surfaces of the EVA bag, and the waterproof sealing performance of the EVA bag is improved. Detection errors caused by uneven spraying are avoided, the waterproof sealing performance of the EVA package is evaluated more comprehensively, and potential sealing defects are found.

Description

Technical Field

[0001] This utility model relates to the field of EVA bag performance testing technology, and in particular to a device for testing the waterproof and sealing performance of EVA bags. Background Technology

[0002] EVA material is a common material in daily life. Bags made of EVA material have many excellent properties such as anti-slip, strong pressure resistance, and water resistance.

[0003] The EVA packaging waterproof sealing performance testing equipment is mainly used to test the waterproof sealing performance of packaging or containers made of EVA material, ensuring that the product will not leak or get damp due to poor sealing during transportation, storage and use.

[0004] In existing technologies, the waterproof sealing performance of EVA bags is generally tested by filling the EVA bag with gas at a certain pressure and then monitoring the changes in gas pressure to determine its sealing performance. However, this method requires pre-set inflation holes or the installation of air nozzles on the EVA bag to connect to inflation equipment, which is a cumbersome process and requires modification of the EVA bag, resulting in increased testing costs. Utility Model Content

[0005] The main purpose of this invention is to provide a device for testing the waterproof and sealing performance of EVA bags, which can effectively solve the problem of the cumbersome steps involved in testing the waterproof and sealing performance of EVA bags.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] An EVA bag waterproof sealing performance testing device includes a base plate, a box body fixedly connected to the middle of the upper end of the base plate, a rotating assembly rotatably connected to the inner surface of the box body, a box cover movably connected to the upper side of the box body, a sealing assembly rotatably connected to the front side of the inner surface of the base plate, a spraying mechanism fixedly connected to the front side wall of the inner surface of the base plate, a vacuum pump fixedly connected to the left side of the upper end of the base plate, a connecting pipe movably connected to the air outlet of the vacuum pump, the connecting pipe being movably connected to the air inlet on the box cover, and communicating with the inner cavity of the box body.

[0008] Preferably, the rotating assembly includes two rotating rods rotatably connected to both sides of the inner surface of the housing. The ends of the two rotating rods that are close to each other are fixedly connected to a support. A threaded rod is rotatably connected to the lower side of the support. The right end of the threaded rod passes through the support. Both sides of the outer surface of the threaded rod are threadedly connected to a fixing part. The two fixing parts are symmetrically arranged. A gear set is rotatably connected to the right end of the housing. A motor is fixedly connected to the upper end of the base plate through a bracket. The output end of the motor is fixedly connected to the gear set through a coupling.

[0009] Preferably, the fixing part includes a movable seat threadedly connected to the outer surface of the threaded rod, a second threaded rod threadedly connected to the upper side of the movable seat, and a clamping plate fixedly connected to the lower end of the second threaded rod through the movable seat.

[0010] Preferably, the sealing assembly includes two limiting parts fixedly connected to the two side walls of the inner surface of the box, and the two limiting parts are fixedly connected to a connecting rod. A second motor is fixedly connected to the left end of the box via a bracket. A second connecting rod is rotatably connected to the left side of the outer surface of the connecting rod. A first connecting rod is rotatably connected to the lower side of the second connecting rod. The first connecting rod is rotatably connected to one of the limiting parts that are close to each other. The output end of the second motor passes through the box and is fixedly connected to the first connecting rod via a coupling.

[0011] Preferably, the limiting part includes a fixing plate fixedly connected to the side wall of the inner surface of the box, a limiting groove is formed in the middle of the fixing plate, a rotating shaft is slidably connected in the limiting groove, a moving part is rotatably connected to the end of the rotating shaft away from the fixing plate, and a connecting plate is fixedly connected to the upper end of the moving part.

[0012] Preferably, the upper ends of both connecting plates are fixedly connected to the lower end of the box cover.

[0013] Preferably, both of the moving parts are rotatably connected to the connecting rod.

[0014] Preferably, a sealing strip is fixedly connected to the lower side of the outer surface of the box cover, and a pressure gauge is fixedly connected to the upper side of the box cover.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This utility model, by setting a rotating component, can clamp and fix the EVA bag, ensuring that the EVA bag will not affect the accuracy of the test results due to shaking or displacement during the testing process. At the same time, when performing spray waterproofing test, it can drive the EVA bag to rotate, so that the spray water evenly covers all surfaces of the EVA bag, avoiding test errors caused by uneven spraying, and more comprehensively evaluating the waterproof sealing performance of the EVA bag, and discovering potential leaks or sealing defects.

[0017] 2. By setting up a sealing component, this utility model can create a sealed environment inside the box, which facilitates the testing of the sealing performance of EVA bags. It can precisely control the pressure and more accurately evaluate the sealing performance of EVA bags under different pressures, improving the accuracy and comprehensiveness of the test. At the same time, it makes the process of closing the lid and the box body quick and easy, which helps to shorten the test preparation time and improve the test efficiency. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a partial cross-sectional structural diagram of the present invention;

[0020] Figure 3 This is a schematic diagram of the rotating component structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the sealing component structure of this utility model;

[0022] Figure 5 This is an exploded structural diagram of the limiting part of this utility model.

[0023] In the diagram: 1. Base plate; 2. Box body; 3. Rotating assembly; 31. Rotating rod; 32. Support; 33. Threaded rod one; 34. Fixing part; 341. Moving seat; 342. Threaded rod two; 343. Clamping plate; 35. Gear set; 36. Motor one; 4. Box cover; 5. Sealing assembly; 51. Limiting part; 511. Fixing plate; 512. Limiting groove; 513. Rotating shaft; 514. Moving part; 515. Connecting plate; 52. Connecting rod; 53. Motor two; 54. Connecting rod one; 55. Connecting rod two; 6. Spraying mechanism; 7. Vacuum pump; 8. Connecting pipe. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] Example 1

[0026] like Figure 1 and Figure 2 As shown, an EVA bag waterproof sealing performance testing device includes a base plate 1, a box body 2 fixedly connected to the upper middle part of the base plate 1, a rotating component 3 rotatably connected to the inner surface of the box body 2, a box cover 4 movably connected to the upper side of the box body 2, a sealing component 5 rotatably connected to the front side of the inner surface of the base plate 1, a spraying mechanism 6 fixedly connected to the front side wall of the inner surface of the base plate 1, a vacuum pump 7 fixedly connected to the upper left side of the base plate 1, a connecting pipe 8 movably connected to the air outlet of the vacuum pump 7, the connecting pipe 8 being movably connected to the air inlet on the box cover 4, and the connecting pipe 8 communicating with the inner cavity of the box body 2.

[0027] Furthermore, a sealing strip is fixedly connected to the lower side of the outer surface of the box cover 4, and a pressure gauge is fixedly connected to the upper side of the box cover 4.

[0028] In this embodiment, during the waterproof performance test, water is supplied to the spraying mechanism 6 via an external water pump and connecting pipe. The water is sprayed out through the nozzle of the spraying mechanism 6 and sprayed onto the EVA bag. At the same time, the motor 36 drives the gear set 35 to rotate, which in turn drives the rotating rod 31 and the support 32 to rotate, thereby causing the EVA bag to rotate. This allows the water to be sprayed evenly onto the EVA bag to test its waterproof performance. The water penetration on the surface of the EVA bag and whether water enters the bag are observed to evaluate its waterproof sealing performance.

[0029] like Figure 3 As shown, the rotating assembly 3 includes two rotating rods 31 rotatably connected to both sides of the inner surface of the housing 2. The ends of the two rotating rods 31 that are close to each other are fixedly connected to a support 32. A threaded rod 33 is rotatably connected to the lower side of the support 32. The right end of the threaded rod 33 passes through the support 32. Both sides of the outer surface of the threaded rod 33 are threadedly connected to a fixing part 34. The two fixing parts 34 are symmetrically arranged. A gear set 35 is rotatably connected to the right end of the housing 2. A motor 36 is fixedly connected to the upper end of the base plate 1 through a bracket. The output end of the motor 36 is fixedly connected to the gear set 35 through a coupling.

[0030] like Figure 3 As shown, the fixing part 34 includes a movable seat 341 that is threadedly connected to the outer surface of the threaded rod 33. The upper side of the movable seat 341 is threadedly connected to the threaded rod 342. The lower end of the threaded rod 342 passes through the movable seat 341 and is fixedly connected to a clamping plate 343.

[0031] The EVA bag to be tested is placed on the support 32. The first threaded rod 33 is rotated to push the two moving seats 341 to move towards the EVA bag and clamp it. Then the second threaded rod 342 is rotated to push the clamping plate 343 towards the EVA bag and clamp it. After the EVA bag is fixed, the second motor 53 drives the connecting rod 54, the second connecting rod 55 and other structures to move, so that the box cover 4 is closed on the upper side of the box body 2 and the box body 2 is sealed.

[0032] Then, the air in the box 2 is extracted by the vacuum pump 7 and the connecting pipe 8, so that the inside of the box 2 becomes a vacuum environment. The pressure inside the box 2 is lower than the pressure inside the EVA bag. If there is a sealing problem in the EVA bag, the gas inside will escape through the leak, causing the pressure inside the box 2 to change. By monitoring the pressure change, the sealing performance of the EVA bag can be judged.

[0033] Example 2

[0034] Based on Embodiment 1, this embodiment adds a sealing component 5, which can tightly seal the lid 4 and the box body 2, making the inside of the box body 2 a sealed environment, which facilitates the testing of the sealing performance of the EVA package.

[0035] like Figure 4As shown, the sealing assembly 5 includes two limiting parts 51 fixedly connected to the two side walls of the inner surface of the housing 2. The two limiting parts 51 are fixedly connected to a connecting rod 52. A second motor 53 is fixedly connected to the left end of the housing 2 through a bracket. A second connecting rod 55 is rotatably connected to the left side of the outer surface of the connecting rod 52. A first connecting rod 54 is rotatably connected to the lower side of the second connecting rod 55. The first connecting rod 54 is rotatably connected to a limiting part 51 that is close to each other. The output end of the second motor 53 passes through the housing 2 and is fixedly connected to the first connecting rod 54 through a coupling.

[0036] like Figure 5 As shown, the limiting part 51 includes a fixed plate 511 fixedly connected to the inner surface side wall of the housing 2. A limiting groove 512 is opened in the middle of the fixed plate 511. A rotating shaft 513 is slidably connected in the limiting groove 512. A moving part 514 is rotatably connected to one end of the rotating shaft 513 away from the fixed plate 511. A connecting plate 515 is fixedly connected to the upper end of the moving part 514.

[0037] Specifically, the upper ends of both connecting plates 515 are fixedly connected to the lower end of the box cover 4.

[0038] Specifically, both moving parts 514 are rotatably connected to the connecting rod 52.

[0039] In this embodiment, during implementation, motor 2 53 drives connecting rod 1 54 to rotate, and connecting rod 1 54 drives connecting rod 2 55 to rotate. Connecting rod 2 55 first pushes connecting rod 52, rotating shaft 513 and moving part 514 to move upward along limiting groove 512. When rotating shaft 513 moves to the top of limiting groove 512, connecting rod 2 55 pushes moving part 514 to rotate around rotating shaft 513. At the same time, connecting rod 2 55 pushes connecting rod 52 and moving part 514 to move obliquely along limiting groove 512, driving moving part 514 and connecting plate 515 to rotate. Connecting plate 515 drives box cover 4 to rotate 90°, opening box cover 4.

[0040] Before conducting the sealing test, the motor 2 53 drives the connecting rod 1 54, connecting rod 2 55 and other structures to move, so that the cover 4 is closed on the upper side of the box body 2 to seal the box body 2.

[0041] It should be noted that the specific installation methods, circuit connection methods, and control methods of the motor 36, motor 53, and vacuum pump 7 used in this utility model are all conventional designs, and will not be described in detail here.

[0042] The working principle of this utility model is as follows: First, motor 2 53 drives connecting rod 1 54 to rotate, connecting rod 1 54 drives connecting rod 2 55 to rotate, connecting rod 2 55 first pushes connecting rod 52, rotating shaft 513 and moving part 514 to move upward along limiting groove 512. When rotating shaft 513 moves to the top of limiting groove 512, connecting rod 2 55 pushes moving part 514 to rotate around rotating shaft 513. At the same time, connecting rod 2 55 pushes connecting rod 52 and moving part 514 to move obliquely along limiting groove 512, driving moving part 514 and connecting plate 515 to rotate. Connecting plate 515 drives box cover 4 to rotate 90°, opening box cover 4.

[0043] Next, the EVA bag to be tested is placed on the support 32. The first threaded rod 33 is rotated to push the two moving seats 341 to move towards the EVA bag and clamp it. Then, the second threaded rod 342 is rotated to push the clamping plate 343 towards the EVA bag and clamp it. After the EVA bag is fixed, the second motor 53 drives the connecting rod 54, connecting rod 55 and other structures to move, so that the box cover 4 is closed on the upper side of the box 2 to seal the box 2. Then, the air in the box 2 is extracted by the vacuum pump 7 and the connecting pipe 8 to make the box 2 a vacuum environment. The pressure inside the box 2 is lower than the internal pressure of the EVA bag. If there is a sealing problem in the EVA bag, the gas inside will escape through the leak, causing the pressure inside the box 2 to change. By monitoring the pressure change, the sealing performance of the EVA bag can be judged.

[0044] After completing the sealing performance test, the vacuum pump 7 returns the pressure inside the chamber 2 to normal. Then, water is supplied to the spraying mechanism 6 through an external water pump and connecting pipe. The water is sprayed out through the nozzle of the spraying mechanism 6 and sprayed onto the EVA bag. At the same time, the motor 36 drives the gear set 35 to rotate, which in turn drives the rotating rod 31 and the support 32 to rotate, thereby causing the EVA bag to rotate. This allows the water to be sprayed evenly onto the EVA bag to test its waterproof performance. The water penetration on the surface of the EVA bag and whether water enters the bag are observed to evaluate its waterproof sealing performance.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for testing the waterproof sealing performance of EVA bags, comprising a base plate (1), characterized in that: A box body (2) is fixedly connected to the upper middle part of the base plate (1). A rotating component (3) is rotatably connected to the inner surface of the box body (2). A box cover (4) is movably connected to the upper side of the box body (2). A sealing component (5) is rotatably connected to the front side of the inner surface of the base plate (1). A spraying mechanism (6) is fixedly connected to the front side wall of the inner surface of the base plate (1). A vacuum pump (7) is fixedly connected to the upper left side of the base plate (1). A connecting pipe (8) is movably connected to the outlet end of the vacuum pump (7). The connecting pipe (8) is movably connected to the air inlet on the box cover (4). The connecting pipe (8) communicates with the inner cavity of the box body (2).

2. The EVA bag waterproof sealing performance testing equipment according to claim 1, characterized in that: The rotating assembly (3) includes two rotating rods (31) rotatably connected to both sides of the inner surface of the housing (2). The two rotating rods (31) are fixedly connected to a support (32) at their close ends. A threaded rod (33) is rotatably connected to the lower side of the support (32). The right end of the threaded rod (33) passes through the support (32). Both sides of the outer surface of the threaded rod (33) are threaded with fixing parts (34). The two fixing parts (34) are symmetrically arranged. A gear set (35) is rotatably connected to the right end of the housing (2). A motor (36) is fixedly connected to the upper end of the base plate (1) through a bracket. The output end of the motor (36) is fixedly connected to the gear set (35) through a coupling.

3. The EVA bag waterproof sealing performance testing equipment according to claim 2, characterized in that: The fixing part (34) includes a movable seat (341) threadedly connected to the outer surface of the threaded rod (33), and a threaded rod (342) threadedly connected to the upper side of the movable seat (341). The lower end of the threaded rod (342) passes through the movable seat (341) and is fixedly connected to a clamp (343).

4. The EVA bag waterproof sealing performance testing equipment according to claim 1, characterized in that: The sealing assembly (5) includes two limiting parts (51) fixedly connected to the two side walls of the inner surface of the housing (2). The two limiting parts (51) are fixedly connected to a connecting rod (52). The left end of the housing (2) is fixedly connected to a motor (53) via a bracket. The left side of the outer surface of the connecting rod (52) is rotatably connected to a connecting rod (55). The lower side of the connecting rod (55) is rotatably connected to a connecting rod (54). The connecting rod (54) is rotatably connected to one of the limiting parts (51) that are close to each other. The output end of the motor (53) passes through the housing (2) and is fixedly connected to the connecting rod (54) via a coupling.

5. The EVA bag waterproof sealing performance testing equipment according to claim 4, characterized in that: The limiting part (51) includes a fixing plate (511) fixedly connected to the inner surface side wall of the box (2). A limiting groove (512) is opened in the middle of the fixing plate (511). A rotating shaft (513) is slidably connected in the limiting groove (512). A moving part (514) is rotatably connected to one end of the rotating shaft (513) away from the fixing plate (511). A connecting plate (515) is fixedly connected to the upper end of the moving part (514).

6. The EVA bag waterproof sealing performance testing equipment according to claim 5, characterized in that: The upper ends of both connecting plates (515) are fixedly connected to the lower end of the box cover (4).

7. The EVA bag waterproof sealing performance testing equipment according to claim 5, characterized in that: Both of the moving parts (514) are rotatably connected to the connecting rod (52).

8. The EVA bag waterproof sealing performance testing equipment according to claim 1, characterized in that: A sealing strip is fixedly connected to the lower side of the outer surface of the box cover (4), and a pressure gauge is fixedly connected to the upper side of the box cover (4).

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