A device for detecting the sealing property of a closure

Abstract

The utility model discloses a kind of sealing tightness detection devices, including support base plate, the upper surface of support base plate is fixedly installed with lifting piece, the upper of support base plate is provided with detection carrier plate, the upper surface of detection carrier plate is fixedly installed with the detection container of annular arrangement, the side surface of lifting piece is fixedly installed with vacuum pump, the suction end of vacuum pump is fixedly communicated with the communication pipe, the top of communication pipe is fixedly communicated with flexible hose.The utility model is through the setting of lifting piece, can drive sealing cover plate to move down, can make sealing gasket and detection container top closely adhere to form closed space, utilize the start of vacuum pump, can be extracted in container air through communication pipe, flexible hose, elbow and suction pipe, and construct stable negative pressure environment, if packaging bag leaks, internal gas is immediately sucked, bag body presents obvious tight adhesion state, so as to be able to seal the quick detection of packaging bag sealing tightness.

Description

Technical Field

[0001] This application relates to the field of plastic packaging bag testing technology, and in particular to a sealing performance testing device. Background Technology

[0002] Plastic packaging bags are flexible packaging containers made from high molecular polymers such as polyethylene and polypropylene through processes such as film blowing, printing, and bag making. They can be classified into single-layer film bags and composite film bags according to their materials, and their uses cover food, medicine, daily chemicals, and industrial fields. They are lightweight, waterproof, have adjustable barrier properties, low cost, and are easy to print. They can protect the contents from contamination, moisture, and damage.

[0003] Chinese Patent No. CN210347015U discloses a food packaging bag sealing performance testing device, which includes a base plate, a conveyor belt, a clamping assembly, and a water storage tank. The conveyor belt is installed above the base plate, and the clamping assembly is installed on the conveying surface of the conveyor belt. Mounting plates are provided on both sides of the conveyor belt in the width direction. The water storage tank stores clean water for testing whether the packaging bag is sealed. After the packaging bag is clamped by the clamping assembly, it is conveyed on the conveyor belt. The opening of the packaging bag comes into contact with the clean water in the water storage tank. By observing whether air bubbles are generated in the clean water in the water storage tank, the sealing performance of the packaging bag can be determined.

[0004] However, the aforementioned patent requires that the opening of the packaging bag be brought into contact with clean water in a water tank to detect whether air bubbles are generated. Since the packaging bag is lightweight, it is easy to float on the surface of the clean water and difficult to insert into the water, resulting in poor accuracy of the sealing test. In addition, after the packaging bag is tested with clean water, water stains will appear on the surface, which will affect subsequent processing and use. Therefore, in order to solve the above problems, we provide a sealing test device. Utility Model Content

[0005] The purpose of this invention is to provide a sealing performance testing device to solve the problem mentioned in the background art, which currently requires the bag opening to come into contact with clean water in a water tank and then observe whether air bubbles are generated when testing packaging bags. However, packaging bags are lightweight and easily float on the surface of clean water, making it difficult to insert them into the water, thus resulting in poor accuracy of sealing performance testing. In addition, after the packaging bag is tested with clean water, water stains will appear on the surface, which will affect subsequent processing and use.

[0006] The embodiments of this application adopt the following technical solutions: A sealing performance testing device includes a supporting base plate, a lifting component fixedly mounted on the upper surface of the supporting base plate, a testing carrier plate disposed above the supporting base plate, and a ring-shaped array of testing containers fixedly mounted on the upper surface of the testing carrier plate. A vacuum pump is fixedly mounted on one side of the lifting component, a connecting pipe is fixedly connected to the suction end of the vacuum pump, a telescopic flexible tube is fixedly connected to the top end of the connecting pipe, a bend is fixedly connected to the top end of the telescopic flexible tube, and multiple suction pipes are fixedly connected to one end of the bend. A sealing cover plate is disposed above the testing carrier plate, and one end of each suction pipe penetrates the sealing cover plate and extends to the bottom of the sealing cover plate. A rotary drive component is fixedly mounted on the upper surface of the supporting base plate.

[0007] Preferably, the rotary drive component includes a geared motor fixedly mounted on the upper surface of the support base plate, a drive shaft fixedly mounted on the output end of the geared motor, the top end of the drive shaft fixedly mounted to the bottom surface of the detection carrier plate, a support plate fixedly mounted on the upper surface of the support base plate, a bearing seat fixedly mounted on one side of the support plate, and the inner ring of the bearing seat fixedly connected to the outer surface of the drive shaft.

[0008] Preferably, a support slide cover is fixedly installed on the upper surface of the support base plate, a forward and reverse motor is fixedly installed on the inner bottom wall of the support slide cover, a transmission screw is fixedly installed on the output end of the forward and reverse motor, a transmission slide plate is threadedly connected to the outer surface of the transmission screw, a lifting slide cover is fixedly connected to the outer surface of the transmission slide plate, two connecting plates are fixedly connected to one side of the lifting slide cover, one side of each of the two connecting plates is fixedly connected to the upper surface of the sealing cover, a fixing block is fixedly connected to one side of the support slide cover, and one side of the fixing block is fixedly connected to the outer surface of the connecting pipe.

[0009] Preferably, a limiting slide is fixedly connected to one side of the lifting component, and an annular sliding plate is fixedly connected to the bottom surface of the detection carrier plate, with the outer surface of the annular sliding plate slidably connected to the inner wall of the limiting slide.

[0010] Preferably, the bottom surface of the sealing cover is fixedly connected with a ring-shaped arrangement of sealing gaskets, and the sealing gaskets are located above the detection container. The upper surface of the sealing cover is fixedly embedded with a ring-shaped arrangement of air pressure sensors, and the detection end of the air pressure sensors is located above the detection container.

[0011] The above-described technical solutions adopted in the embodiments of this application can achieve the following beneficial effects: 1. This sealing and sealing performance testing device involves placing a packaging bag inside a testing container. A lifting mechanism drives the sealing cover downwards, ensuring a tight seal between the sealing gasket and the top of the testing container, creating a closed space. A vacuum pump is activated, rapidly extracting air from the container via a connecting pipe, flexible hose, bend, and extraction pipe to create a stable negative pressure environment. If the packaging bag leaks, the internal gas is immediately removed, resulting in a noticeably tight seal. Therefore, this device enables rapid testing of the sealing performance of the packaging bag.

[0012] 2. This sealing performance testing device uses a lifting component to raise the sealing cover, which in turn causes the rotating drive component to slowly rotate the testing carrier plate. Operators can then sequentially remove the tested packaging bags and place new samples along the circularly arranged testing containers, thus solving the waiting gap problem of traditional single-station testing and improving the testing efficiency of packaging bag sealing performance. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 See: A three-dimensional structural diagram of the sealing performance testing device of this utility model from the front view; Figure 2 See below: A three-dimensional structural diagram of the sealing performance testing device of this utility model, viewed from below; Figure 3 See: A side sectional view of the lifting component in the sealing and sealing performance testing device of this utility model; Figure 4 See below: A three-dimensional structural diagram of the sealing cover plate in the sealing performance testing device of this utility model, viewed from below; Figure 5 See: A top-view three-dimensional structural diagram of the rotary drive component in the sealing performance testing device of this utility model.

[0014] In the diagram: 1. Support base plate; 2. Lifting component; 21. Support slide cover; 22. Forward and reverse motor; 23. Transmission screw; 24. Transmission slide plate; 25. Lifting slide cover; 26. Fixing block; 27. Connecting plate; 3. Detection carrier plate; 4. Detection container; 5. Sealing cover plate; 6. Vacuum pump; 7. Rotary drive component; 71. Support upright plate; 72. Gear motor; 73. Bearing seat; 74. Drive shaft; 8. Connecting pipe; 9. Telescopic hose; 10. Bend; 11. Air extraction pipe; 12. Sealing gasket; 13. Air pressure sensor; 14. Limiting slide; 15. Circular slide plate. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0016] Example 1 As attached Figure 1 , Figure 2 and Figure 3 The sealing performance testing device shown includes a supporting base plate 1, a lifting component 2 fixedly installed on the upper surface of the supporting base plate 1, a testing carrier plate 3 arranged above the supporting base plate 1, a ring-shaped testing container 4 fixedly installed on the upper surface of the testing carrier plate 3, a vacuum pump 6 fixedly installed on one side of the lifting component 2, a connecting pipe 8 fixedly connected to the suction end of the vacuum pump 6, a telescopic hose 9 fixedly connected to the top end of the connecting pipe 8, a bend 10 fixedly connected to the top end of the telescopic hose 9, a plurality of suction pipes 11 fixedly connected to one end of the bend 10, a sealing cover plate 5 arranged above the testing carrier plate 3, one end of each suction pipe 11 passing through the sealing cover plate 5 and extending to the bottom of the sealing cover plate 5, and a rotary drive component 7 fixedly installed on the upper surface of the supporting base plate 1.

[0017] As can be seen from the above description, this utility model has the following beneficial effects: by using the lifting component 2, the sealing cover plate 5 can be driven to move down, so that the sealing gasket 12 can be tightly attached to the top of the detection container 4 to form a closed space. By using the start of the vacuum pump 6, the air inside the container can be quickly extracted through the connecting pipe 8, the telescopic hose 9, the bend pipe 10 and the air extraction pipe 11 to build a stable negative pressure environment. If the packaging bag leaks air, the internal gas is immediately sucked out, and the bag body shows a clear tight attachment state. Therefore, the sealing performance of the packaging bag can be quickly detected.

[0018] Example 2 Based on Embodiment 1, the solution in Embodiment 1 will be further described in detail below, with reference to the specific working method described in detail: like Figure 2 and Figure 5As shown, in a preferred embodiment, the rotary drive component 7 includes a geared motor 72 fixedly mounted on the upper surface of the support base plate 1. A drive shaft 74 is fixedly mounted on the output end of the geared motor 72. The top end of the drive shaft 74 is fixedly mounted to the bottom surface of the detection carrier plate 3. A support plate 71 is fixedly mounted on the upper surface of the support base plate 1. A bearing seat 73 is fixedly mounted on one side of the support plate 71. The inner ring of the bearing seat 73 is fixedly connected to the outer surface of the drive shaft 74. Furthermore, the support plate 71 can provide a stable mounting support point for the bearing seat 73, ensuring that the bearing seat 73 is fixed in position. The inner ring of the bearing seat 73 can limit and assist the rotation of the drive shaft 74, reducing the radial sway when the drive shaft 74 rotates. When the geared motor 72 is running, it drives the drive shaft 74 to rotate stably, thereby driving the detection carrier plate 3 fixed at the top end to rotate, realizing the cyclic switching of the detection container 4, providing power for continuous picking and putting in packaging bags, and ensuring the stability of the rotation process of the detection carrier plate 3.

[0019] like Figure 4 As shown, in a preferred embodiment, a support slide cover 21 is fixedly installed on the upper surface of the support base plate 1. A forward and reverse motor 22 is fixedly installed on the inner bottom wall of the support slide cover 21. A transmission screw 23 is fixedly installed at the output end of the forward and reverse motor 22. A transmission slide plate 24 is threadedly connected to the outer surface of the transmission screw 23. A lifting slide cover 25 is fixedly connected to the outer surface of the transmission slide plate 24. Two connecting plates 27 are fixedly connected to one side of the lifting slide cover 25. One side of each of the two connecting plates 27 is fixedly connected to the upper surface of the sealing cover 5. A fixed... Block 26, one side of the fixing block 26 is fixedly connected to the outer surface of the connecting pipe 8. Furthermore, the forward and reverse motor 22 drives the transmission screw 23 to rotate in both directions. The transmission screw 23 and the transmission slide plate 24 are threaded together, which can drive the lifting slide cover 25 to rise and fall synchronously. The lifting slide cover 25 drives the sealing cover 5 to move up and down through two connecting plates 27, so as to achieve the contact and separation of the sealing cover 5 and the detection container 4. The fixing block 26 on the side of the supporting slide cover 21 fixes and limits the connecting pipe 8 to prevent the connecting pipe 8 from shaking when the vacuum pump 6 is working, and ensures the stability of the air extraction path.

[0020] like Figure 1 , Figure 2 and Figure 3As shown, in a preferred embodiment, a limiting slide 14 is fixedly connected to one side of the lifting component 2, an annular slide plate 15 is fixedly connected to the bottom surface of the detection carrier plate 3, the outer surface of the annular slide plate 15 is slidably connected to the inner wall of the limiting slide 14, annularly arranged sealing gaskets 12 are fixedly connected to the bottom surface of the sealing cover plate 5, and the sealing gaskets 12 are located above the detection container 4, and annularly arranged air pressure sensors 13 are fixedly embedded on the upper surface of the sealing cover plate 5, and the detection end of the air pressure sensors 13 is located above the detection container 4. Furthermore, the cooperation between the limiting slide 14 and the annular slide plate 15 enhances the stability of the rotation of the detection carrier plate 3 and prevents it from shifting. The annularly arranged sealing gaskets 12 on the bottom surface of the sealing cover plate 5 fit tightly against the top of the detection container 4 when the sealing cover plate 5 moves down, which can enhance the sealing of the detection container 4 and prevent air leakage in the negative pressure environment from affecting the detection results. The air pressure sensors 13 on the sealing cover plate 5 can monitor the air pressure changes inside the container in real time.

[0021] The working process of this utility model is as follows: When using this sealing and sealing testing device, the packaging bag to be tested is first placed into the testing container 4 of the testing carrier plate 3. Then, the forward and reverse motor 22 in the lifting component 2 is started, which drives the transmission screw 23 to rotate. This screw can engage with the transmission slide plate 24, causing the transmission slide plate 24 to move the sealing cover 5 downward through the lifting cover 25 and the connecting plate 27. When the sealing gasket 12 on the bottom surface of the sealing cover 5 is in contact with the top of the testing container 4, the vacuum pump 6 is started. Air is drawn out of the testing container 4 through the connecting pipe 8, the telescopic hose 9, the bend 10, and the air extraction pipe 11, creating a negative pressure environment. When the packaging bag leaks air, the gas inside the packaging bag will be sucked out, and then a tight adhesion will be formed. Then, the sealing cover 5 moves upward, and the rotation drive component 7 drives the testing carrier plate 3 to rotate slowly, making it easy to remove the tested packaging bags one by one and place new packaging bags for subsequent testing. This is the working process and working principle of the device.

[0022] It should also be noted that, in terms of circuit structure, the drive and control circuits of this utility model are common and mature technologies. Those skilled in the art can select appropriate circuit components to build the circuit according to the power requirements and control requirements of the equipment. For the power supply components, common general power supply equipment on the market and electrical components of this application can be used. These are all common electrical equipment in the prior art. In addition, it needs to be connected to an external control system. The control circuit can be implemented by those skilled in the art through simple programming. This application will not elaborate further.

[0023] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalent elements of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A sealing performance testing device, comprising a supporting base plate (1), wherein a lifting component (2) is fixedly installed on the upper surface of the supporting base plate (1), and a testing carrier plate (3) is disposed above the supporting base plate (1), characterized in that: The upper surface of the detection carrier plate (3) is fixedly equipped with a ring-shaped array of detection containers (4). A vacuum pump (6) is fixedly installed on one side of the lifting component (2). The vacuum pump (6) is fixedly connected to a connecting pipe (8) at the suction end. A telescopic hose (9) is fixedly connected to the top end of the connecting pipe (8). A bend (10) is fixedly connected to the top end of the telescopic hose (9). A plurality of suction pipes (11) are fixedly connected to one end of the bend (10). A sealing cover plate (5) is provided above the detection carrier plate (3). One end of each suction pipe (11) passes through the sealing cover plate (5) and extends to the bottom of the sealing cover plate (5). A rotary drive component (7) is fixedly installed on the upper surface of the support base plate (1).

2. The sealing performance testing device according to claim 1, characterized in that: The rotary drive component (7) includes a geared motor (72) fixedly mounted on the upper surface of the support base plate (1), and a drive shaft (74) fixedly mounted on the output end of the geared motor (72). The top end of the drive shaft (74) is fixedly mounted on the bottom surface of the detection carrier plate (3).

3. The sealing performance testing device according to claim 2, characterized in that: A support plate (71) is fixedly installed on the upper surface of the support base plate (1), and a bearing seat (73) is fixedly installed on one side of the support plate (71). The inner ring of the bearing seat (73) is fixedly connected to the outer surface of the drive shaft (74).

4. The sealing performance testing device according to claim 1, characterized in that: A support slide cover (21) is fixedly installed on the upper surface of the support base plate (1). A forward and reverse motor (22) is fixedly installed on the inner bottom wall of the support slide cover (21). A transmission screw (23) is fixedly installed at the output end of the forward and reverse motor (22). A transmission slide plate (24) is threadedly connected to the outer surface of the transmission screw (23).

5. The sealing performance testing device according to claim 4, characterized in that: The outer surface of the transmission slide plate (24) is fixedly connected to a lifting slide cover (25), and two connecting plates (27) are fixedly connected to one side of the lifting slide cover (25). One side of each of the two connecting plates (27) is fixedly connected to the upper surface of the sealing cover plate (5).

6. The sealing performance testing device according to claim 1, characterized in that: One side of the lifting component (2) is fixedly connected to a limiting slide (14), and the bottom surface of the detection plate (3) is fixedly connected to an annular slide plate (15). The outer surface of the annular slide plate (15) is slidably connected to the inner wall of the limiting slide plate (14).

7. The sealing performance testing device according to claim 4, characterized in that: A fixing block (26) is fixedly connected to one side of the supporting slide cover (21), and one side of the fixing block (26) is fixedly connected to the outer surface of the connecting pipe (8).

8. The sealing performance testing device according to claim 1, characterized in that: The bottom surface of the sealing cover (5) is fixedly connected with a ring-shaped sealing gasket (12), and the sealing gasket (12) is located above the detection container (4). The upper surface of the sealing cover (5) is fixedly inlaid with a ring-shaped air pressure sensor (13), and the detection end of the air pressure sensor (13) is located above the detection container (4).

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