A high-density polyethylene bottle and bottle cap sealing reliability experimental equipment

Abstract

The utility model discloses a high density polyethylene bottle and bottle lid sealed reliability experimental equipment, including detection box, the rear side wall of detection box is equipped with the middle installation frame, and the upper end of installation frame is equipped with the mounting plate, still including adjustable fixing mechanism, adjustable fixing mechanism: it includes adjusting column, locating groove, sliding plate, locating piece, metal spring piece and adjusting assembly, and adjusting column is slidably connected to the front and back two sides of mounting plate inside respectively, and locating groove is evenly set up in the side of adjusting column close to the middle part of mounting plate, this high density polyethylene bottle and bottle lid sealed reliability experimental equipment can put in and fix multiple different diameter high density polyethylene bottles simultaneously and detect, can also release single or all high density polyethylene bottles simultaneously, and cooperate with the extrusion of extruding bolt, can make high density polyethylene bottle one hundred and eighty degrees deflection and keep unmoved, has improved the detection efficiency of high density polyethylene bottle sealing property and is convenient for observation.

Description

Technical Field

[0001] This utility model relates to the field of high-density polyethylene bottle testing technology, specifically to a testing device for the sealing reliability of high-density polyethylene bottles and caps. Background Technology

[0002] High-density polyethylene (HDPE) bottles are lightweight, chemically resistant plastic containers made from HDPE through blow molding. They possess excellent impact resistance, moisture resistance, and recyclability, and are widely used for liquid or solid packaging in the food, pharmaceutical, and daily chemical industries. Their opaque appearance and high rigidity are typical characteristics that distinguish them from other plastic bottles. During HDPE bottle production, a sealing test is required for the bottle caps, necessitating the use of a sealing tester. Existing sealing testers typically consist of a sealing test chamber, a main unit, and an air compressor. The sealing test utilizes the bubble method. During testing, the top cover of the sealing test chamber is opened, and a certain amount of water is injected inside. The HDPE bottle is then completely immersed in the water. The top cover is closed, and a limiting plate below the top cover prevents the bottle from floating to the surface. The main unit controls the air compressor, which draws air out of the sealing test chamber, ensuring a tight seal. A vacuum environment is created inside the sealing test box, creating a pressure difference between the test box and the high-density polyethylene (HDPE) bottle. Observing the connection between the HDPE bottle body and cap, the absence of air bubbles indicates a good seal. If air bubbles appear at the connection, it indicates a defect in the seal. Traditional sealing testers use a limiting plate under the top cover to press the HDPE bottle into the water. However, there is no fixing mechanism under the limiting plate, which cannot secure the HDPE bottle. The depth and deflection direction of the HDPE bottle in the water cannot be guaranteed. When multiple HDPE bottles are placed, their different positions can obstruct the view and affect the observation of air bubbles. Therefore, only one HDPE bottle can be placed at a time, resulting in low testing efficiency for HDPE bottle seals. To address this, we propose a new experimental device for the reliability of HDPE bottle and cap seals. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a high-density polyethylene bottle and cap sealing reliability testing device. It can simultaneously put in and fix multiple high-density polyethylene bottles of different diameters for testing, and can also release one or all high-density polyethylene bottles at the same time. With the compression of the compression bolt, the high-density polyethylene bottle can be deflected 180 degrees and kept stationary, which improves the testing efficiency of the high-density polyethylene bottle sealing performance and facilitates observation. It can effectively solve the problems in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a high-density polyethylene bottle and cap sealing reliability testing device, including a test box, a mounting frame provided in the middle of the rear side wall of the test box, a mounting plate provided at the upper end of the mounting frame, and an adjustable fixing mechanism.

[0005] Adjustable fixing mechanism: It includes an adjusting column, a positioning groove, a sliding plate, positioning pieces, metal springs, and an adjusting assembly. The adjusting column is slidably connected to the front and rear sides inside the mounting plate. The positioning groove is evenly opened on the side of the adjusting column near the middle of the mounting plate. The sliding plate is slidably connected to the upper middle of the mounting plate. The sliding plate has evenly distributed grooves in the middle of its interior. The positioning pieces are slidably connected to the front and rear sides inside the grooves. The positioning pieces are all installed in conjunction with the positioning grooves. A metal spring is provided between two longitudinally adjacent positioning pieces. The left end of each metal spring is fixedly connected to the left side wall of the vertically adjacent groove, providing a basis for adjusting the adjusting column, thereby fixing and releasing high-density polyethylene bottles of different diameters. The adjusting assembly is set at the lower end of the adjusting column, which can simultaneously insert and fix multiple high-density polyethylene bottles of different diameters for testing, and can also release one or all high-density polyethylene bottles at the same time. With the compression of the compression bolt, the high-density polyethylene bottle can be deflected 180 degrees and kept stationary, improving the testing efficiency of the high-density polyethylene bottle's sealing performance and facilitating observation.

[0006] Furthermore, the adjustment assembly includes a deflection frame, clamps, and a compression bolt. The deflection frames are rotatably connected to the lower end of the outer surface of the adjustment column. The clamps are all located at the front end of the opposite inner side of two vertically adjacent deflection frames. The lower clamps are slidably connected to the middle of the upper end of the lower vertically adjacent deflection frame. The compression bolt is threadedly connected to the lower end of the inner surface of the adjustment column. The lower end of the outer surface of the compression bolt is fitted with the lower end of the inner wall of the adjustment column, providing a basis for the deflection of the high-density polyethylene bottle angle.

[0007] Furthermore, the adjustment assembly also includes sliding columns and adjusting bolts. The sliding columns are slidably connected to the inner front side of the upper deflection frame. The lower ends of two longitudinally adjacent sliding columns are fixedly connected to the upper ends of vertically adjacent clamping plates. The adjusting bolts are rotatably connected to the inner middle of the deflection frame. The lower ends of the outer surfaces of the adjusting bolts are threadedly connected to the inner upper middle of the vertically adjacent clamping plates, providing a basis for fine-tuning the upper clamping plates and enabling the clamping plates to better fit the high-density polyethylene bottle.

[0008] Furthermore, the adjustment assembly also includes a screw, which is rotatably connected to the middle of the right side of the mounting plate. The left side of the outer surface of the screw is threadedly connected to the middle of the right side of the sliding plate, providing a basis for the movement of the sliding plate and for the simultaneous release of multiple high-density polyethylene bottles.

[0009] Furthermore, it also includes a top cover and an insertion hole. The top cover is located at the top of the detection box, and the insertion hole is located in the middle of the inside of the top cover, providing a basis for sealing the detection box and delivering gas.

[0010] Furthermore, it also includes a flow sensor, which is located inside the rear of the main unit box. The flow sensor is bidirectionally electrically connected to the microcontroller. The left port of the flow sensor is connected to the socket through an air pipe, and the right port of the flow sensor is connected to an external air compressor through an air pipe, providing a detection basis for gas flow.

[0011] Furthermore, it also includes a microcontroller and a main unit box. The main unit box is placed on the right side of the detection box, and the microcontroller is located on the upper front side of the main unit box. The input terminal of the microcontroller is electrically connected to the output terminal of the microcontroller, providing control for the detection of the sealing performance of high-density polyethylene bottles.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This high-density polyethylene bottle and cap sealing reliability testing equipment has the following advantages:

[0013] 1. The height of the adjusting column can be adjusted by moving the positioning plate, and individual high-density polyethylene bottles of different diameters can be fixed and released. By rotating the screw, the mounting plate and all positioning plates can be moved to the left, thereby releasing all high-density polyethylene bottles at the same time. Multiple high-density polyethylene bottles can be detected at the same time and multiple high-density polyethylene bottles can be fixed and released quickly, which improves the detection efficiency of high-density polyethylene bottle sealing performance.

[0014] 2. By tightening and loosening the screws, the deflection frame is fixed and released by the slight deformation at the lower edge of the adjusting column. In conjunction with the sliding of the lower clamp, the deflection angle of the high-density polyethylene bottle can be quickly adjusted and fixed, making it easier to observe bubbles during the testing of the high-density polyethylene bottle. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the adjustable fixing mechanism of this utility model;

[0017] Figure 3 This is a cross-sectional structural diagram of the adjustable fixing mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the metal spring sheet of this utility model;

[0019] Figure 5 This is a schematic diagram of the extrusion bolt of this utility model.

[0020] In the diagram: 1. Detection box, 2. Mounting frame, 3. Mounting plate, 4. Adjustable fixing mechanism, 41. Adjusting column, 42. Positioning groove, 43. Sliding plate, 44. Positioning piece, 45. Metal spring, 46. Adjustment assembly, 461. Deflection bracket, 462. Clamping piece, 463. Press bolt, 464. Sliding column, 465. Adjusting bolt, 466. Screw, 5. Slide groove, 6. Top cover, 7. Socket, 8. Flow sensor, 9. Microcontroller, 10. Main unit box. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 This embodiment provides a technical solution: a high-density polyethylene bottle and cap sealing reliability testing device, including a test box 1, a mounting frame 2 in the middle of the rear side wall of the test box 1, the test box 1 being composed of a stainless steel frame and a transparent acrylic plate, the stainless steel frame and the transparent acrylic plate being bonded together with structural adhesive, having high transparency and high sealing performance, a sealing strip at the upper end of the test box 1, a mounting plate 3 at the upper end of the mounting frame 2, a top cover 6 and an insertion hole 7, the top cover 6 being disposed at the upper end of the test box 1 and fastening to the upper end of the test box 1, the insertion hole 7 being opened in the middle of the interior of the top cover 6, providing a basis for the sealing of the test box 1 and the gas delivery, and a flow sensor 8, the flow... Sensor 8 is located inside the rear side of the main unit box 10. Flow sensor 8 is bidirectionally electrically connected to microcontroller 9. The left port of flow sensor 8 is connected to socket 7 through air pipe 1, and the right port of flow sensor 8 is connected to an external air compressor through air pipe 2. Flow sensor 8 and external air compressor are common gas conveying devices in the prior art, providing a detection basis for gas flow. It also includes microcontroller 9 and main unit box 10. The main unit box 10 is placed on the right side of detection box 1. Microcontroller 9 is located on the upper front side of the main unit box 10. The input end of microcontroller 9 is electrically connected to the output end of microcontroller 7, providing a control effect for the detection of the sealing performance of high-density polyethylene bottles. It also includes an adjustable fixing mechanism 4.

[0023] Adjustable fixing mechanism 4 includes an adjusting column 41, a positioning groove 42, a sliding plate 43, a positioning piece 44, a metal spring piece 45, and an adjusting assembly 46. The adjusting column 41 is slidably connected to the front and rear sides inside the mounting plate 3. Limiting sliding holes are provided on both the front and rear sides inside the mounting plate 3. Limiting protrusions are provided on the inner walls of the limiting sliding holes. The outer surfaces of the adjusting column 41 are slidably connected to the inner walls of the vertically adjacent limiting sliding holes. Limiting grooves are provided on the side of the outer surface of the adjusting column 41 away from the middle of the mounting plate 3. The outer surfaces of the limiting protrusions are slidably connected to the inner walls of the vertically adjacent limiting grooves, providing a limit for the up and down movement of the adjusting column 41. The positioning groove 42 is evenly provided on the side of the adjusting column 41 near the middle of the mounting plate 3. The sliding plate 43 is slidably connected to the adjusting column 41. At the upper center of the mounting plate 3, the sliding plate 43 has evenly distributed grooves 5 inside. Positioning pieces 44 are slidably connected to the front and rear sides inside the grooves 5. Each positioning piece 44 is installed in conjunction with a positioning groove 42 and is inserted into the inner wall of the horizontally adjacent positioning groove 42. A metal spring 45 is provided between two vertically adjacent positioning pieces 44. The left end of each metal spring 45 is fixedly connected to the left side wall of the vertically adjacent groove 5. The metal spring 45 is made of stainless steel and has good elasticity. When subjected to compression, the metal spring 45 deforms and stores energy. When the external force disappears, the metal spring 45 returns to its original shape, providing a basis for the adjustment of the adjusting column 41, thereby fixing and releasing high-density polyethylene bottles of different diameters for adjustment. Component 46 is located at the lower end of the adjusting column 41. The adjusting component 46 includes a deflection frame 461, clamping plates 462, and a clamping bolt 463. The deflection frames 461 are rotatably connected to the lower end of the outer surface of the adjusting column 41. The clamping plates 462 are located at the front end of the opposite inner surfaces of two vertically adjacent deflection frames 461. The lower clamping plates 462 are slidably connected to the middle of the upper end of the lower vertically adjacent deflection frame 461. A limiting bolt can also be provided at the front end of the right side of the lower clamping plate 462. The left side of the outer surface of the limiting bolt is connected to the internal thread of the vertically adjacent clamping plate 462. When the limiting bolt is tightened, the left side of the hexagonal head of the limiting bolt is in contact with the right side of the vertically adjacent deflection frame 461, thereby generating friction to more efficiently fix the lower clamping plate 462. The compression bolt 463 is threadedly connected to the lower inner end of the adjusting column 41. The lower outer surface of the compression bolt 463 is fitted with the lower inner wall of the adjusting column 41. The lower edge of the adjusting column 41 has evenly distributed notches. The connection between the compression bolt 463 stud and the hexagonal head is chamfered. When the compression bolt 463 is tightened, the chamfer of the compression bolt 463 moves upward to press against the inner wall of the lower edge of the adjusting column 41, causing the lower outer surface of the adjusting column 41 to protrude outward and fit tightly against the inner wall of the deflection frame 461, thereby fixing the deflection frame 461 and providing a basis for the deflection of the high-density polyethylene bottle angle. The adjusting assembly 46 also includes a sliding column 464 and an adjusting bolt 465. The sliding column 464 is slidably connected to the front inner side of the upper deflection frame 461.The lower ends of two longitudinally adjacent sliding columns 464 are fixedly connected to the upper ends of vertically adjacent clamping pieces 462. Adjusting bolts 465 are rotatably connected to the inner center of the deflection frame 461. The lower ends of the outer surfaces of the adjusting bolts 465 are threadedly connected to the inner upper center of the vertically adjacent clamping pieces 462. The vertical movement of the upper clamping piece 462 is greater than the distance between the two positioning slots 42, providing a basis for fine-tuning the upper clamping piece 462 and allowing it to better fit the high-density polyethylene bottle. The adjusting assembly 46 also includes a screw 466, which is rotatably connected to the inner right center of the mounting plate 3. A mounting protrusion is provided at the upper right center of the mounting plate 3. The outer surface of the screw 466 is rotatably connected to the inner center of the mounting protrusion. The left side of the outer surface is threaded to the middle of the right side of the inner surface of the sliding plate 43. A bellows can be added between the left side of the mounting protrusion and the right side of the sliding plate 43. The bellows is sleeved on the outer surface of the screw 466. The bellows will contract and expand as the sliding plate 43 moves left and right, protecting the screw 466 from the influence of the external environment, providing a basis for the movement of the sliding plate 43, and providing a basis for the simultaneous release of multiple high-density polyethylene bottles. It can simultaneously insert and fix multiple high-density polyethylene bottles of different diameters for testing, and can also release one or all high-density polyethylene bottles at the same time. With the compression of the compression bolt 463, the high-density polyethylene bottle can be deflected 180 degrees and kept stationary, improving the testing efficiency of the high-density polyethylene bottle's sealing performance and facilitating observation.

[0024] The working principle of the high-density polyethylene bottle and cap sealing reliability testing device provided by this utility model is as follows: When testing the sealing performance of the high-density polyethylene bottle and cap, first open the top cover 6, then inject a certain amount of clean water into the test box 1, then fix the high-density polyethylene bottle, adjust the rear adjusting column 41 according to the actual situation, and push the rear positioning piece 44 forward. The rear end of the metal spring piece 45 is subjected to force and bends forward, causing the rear positioning piece 44 to completely leave the interior of the rear positioning groove 42. Move the rear adjusting column 41 vertically, so that the lower clamping piece 462 moves to a suitable height inside the test box 1. Release the rear positioning piece 44, and the rear end of the metal spring piece 45 returns to its original shape without force, driving the positioning piece 44 back to its original position. The rear end of the outer surface is reinserted into the longitudinally adjacent positioning groove 42, and the rear adjusting column 41 is fixed. Then, the high-density polyethylene bottle is immersed into the detection box 1, so that the lower end of the high-density polyethylene bottle body is in contact with the inner wall of the lower clamp 462. Then, the front positioning piece 44 is moved to adjust the height of the front adjusting column 41, so that the upper clamp 462 is close to the upper end of the high-density polyethylene bottle body. At this time, the adjusting bolt 465 is rotated to move the upper clamp 462 down until the upper clamp 462 is in contact with the upper end of the high-density polyethylene bottle body. At this time, the high-density polyethylene bottle is fixed in a suitable position inside the detection box 1. After all the high-density polyethylene bottles are fixed, the top cover 6 is put on, so that the top cover 6 is in contact with the detection box 1 body. The upper part of the test box 1 is in a snap-fit ​​state. The sealing ring at the upper part of the test box 1 provides a sealing effect between the top cover 6 and the test box 1. The microcontroller 9 controls the operation of the external air compressor. The external air compressor extracts the air from the inside of the test box 1 through air pipe one and air pipe two, making the inside of the test box 1 a vacuum state. When the extracted gas passes through the flow sensor 8, it is detected by the flow sensor 8. The flow sensor 8 calculates the amount of gas extracted, thereby accurately determining the pressure difference between the inside of the test box 1 and the normal pressure. At this time, the inside of the high-density polyethylene bottle is at normal pressure, and there is a pressure difference between it and the inside of the test box 1. At this time, observe the connection between the high-density polyethylene bottle body and the cap. If no air bubbles are found, it proves that the seal between the high-density polyethylene bottle and the cap is good. If air bubbles appear at the connection between the high-density polyethylene bottle body and the cap... This indicates a defect in the seal between the high-density polyethylene bottle and the cap. After testing, the high-density polyethylene bottle needs to be removed. Rotating screw 466 moves mounting plate 3 to the left, and all positioning pieces 44 also move to the left simultaneously. The positioning pieces 44 and positioning grooves 42 gradually misalign until the positioning pieces 44 are completely removed from the positioning grooves 42. Then, the front and rear adjusting columns 41 simultaneously lose their limiting positions, and all high-density polyethylene bottles are released simultaneously. This achieves simultaneous release of the high-density polyethylene bottles. When the diameter of the high-density polyethylene bottle is too large, the deflection direction needs to be changed before fixing. Loosen the clamping bolt 463, and the deflection frame 461 loses its limiting position. Deflect the upper and lower deflection frames 461 by the same angle. Since the clamping piece 462 has a large area, the deflection angle does not need to be very precise.Visual inspection is sufficient. Once the deflector 461 is deflected to the appropriate angle, tighten the clamping bolt 463. The lower end of the outer surface of the clamping bolt 463 presses against the lower end of the inner wall of the adjusting column 41, causing the lower edge of the adjusting column 41 to protrude outwards. At this point, the lower end of the outer surface of the adjusting column 41 will be tightly against the inner wall of the deflector 461, thus fixing the deflector 461. Then, move the lower clamp 462 to align the upper and lower clamps 462 vertically. Then, fix the high-density polyethylene bottle in the same way. When the upper clamp 462 is tightly against the upper end of the high-density polyethylene bottle, it will exert a downward squeezing force on the high-density polyethylene bottle, causing the high-density polyethylene bottle to also fit against the lower clamp 462, thereby achieving the deflection of the high-density polyethylene bottle angle, which facilitates subsequent observation.

[0025] It is worth noting that the microcontroller 9 disclosed in the above embodiments is an STM32F429ZGT6 microcontroller, and the flow sensor 8 is a CAFS3000 flow sensor. The microcontroller 9 controls the flow sensor 8 and the external air compressor using methods commonly used in the prior art.

[0026] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A high-density polyethylene bottle and cap sealing reliability testing device, comprising a test box (1), wherein a mounting frame (2) is provided in the middle of the rear side wall of the test box (1), and a mounting plate (3) is provided at the upper end of the mounting frame (2), characterized in that: It also includes an adjustable fixing mechanism (4); Adjustable fixing mechanism (4): It includes an adjusting column (41), a positioning groove (42), a sliding plate (43), a positioning piece (44), a metal spring piece (45), and an adjusting component (46). The adjusting column (41) is slidably connected to the front and rear sides inside the mounting plate (3). The positioning groove (42) is evenly opened on the side of the adjusting column (41) near the middle of the mounting plate (3). The sliding plate (43) is slidably connected to the middle of the upper end of the mounting plate (3). The sliding plate (43) has an evenly distributed sliding groove (5) in the middle of its interior. The positioning piece (44) is slidably connected to the front and rear sides inside the sliding groove (5). The positioning piece (44) is installed in cooperation with the positioning groove (42). A metal spring piece (45) is provided between two longitudinally adjacent positioning pieces (44). The left end of the metal spring piece (45) is fixedly connected to the left side wall of the vertically adjacent sliding groove (5). The adjusting component (46) is located at the lower end of the adjusting column (41).

2. The experimental equipment for testing the sealing reliability of high-density polyethylene bottles and caps according to claim 1, characterized in that: It also includes a microcontroller (9) and a host box (10). The host box (10) is placed on the right side of the detection box (1). The microcontroller (9) is located on the upper front side of the host box (10). The input terminal of the microcontroller (9) is electrically connected to the output terminal of the microcontroller (9).

3. The experimental equipment for testing the sealing reliability of high-density polyethylene bottles and caps according to claim 1, characterized in that: The adjustment assembly (46) includes a deflection frame (461), a clamp (462), and a clamping bolt (463). The deflection frames (461) are rotatably connected to the lower end of the outer surface of the adjustment column (41). The clamps (462) are all located at the front end of the opposite inner side of two vertically adjacent deflection frames (461). The clamps (462) located below are slidably connected to the middle of the upper end of the vertically adjacent deflection frame (461) below. The clamping bolt (463) is threadedly connected to the lower end of the inner surface of the adjustment column (41). The lower end of the outer surface of the clamping bolt (463) is fitted with the lower end of the inner wall of the adjustment column (41).

4. The experimental device for testing the sealing reliability of high-density polyethylene bottles and caps according to claim 3, characterized in that: The adjustment assembly (46) further includes a sliding column (464) and an adjusting bolt (465). The sliding columns (464) are slidably connected to the front inside of the upper deflection frame (461). The lower ends of two longitudinally adjacent sliding columns (464) are fixedly connected to the upper ends of the vertically adjacent clamps (462). The adjusting bolts (465) are rotatably connected to the middle inside of the deflection frame (461). The lower end of the outer surface of the adjusting bolts (465) is threadedly connected to the middle of the upper inside of the vertically adjacent clamps (462).

5. The experimental equipment for testing the sealing reliability of high-density polyethylene bottles and caps according to claim 1, characterized in that: The adjustment assembly (46) also includes a screw (466), which is rotatably connected to the middle of the right side of the mounting plate (3), and the left side of the outer surface of the screw (466) is threadedly connected to the middle of the right side of the sliding plate (43).

6. The experimental apparatus for testing the sealing reliability of high-density polyethylene bottles and caps according to claim 2, characterized in that: It also includes a top cover (6) and a socket (7), the top cover (6) being located at the upper end of the detection box (1), and the socket (7) being located in the middle of the interior of the top cover (6).

7. The experimental apparatus for testing the sealing reliability of high-density polyethylene bottles and caps according to claim 6, characterized in that: It also includes a flow sensor (8), which is located inside the rear side of the main unit box (10). The flow sensor (8) is bidirectionally electrically connected to the microcontroller (9). The left port of the flow sensor (8) is connected to the socket (7) through an air pipe, and the right port of the flow sensor (8) is connected to an external air compressor through an air pipe.

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