Tea packaging bag sealing performance detection device

Abstract

The utility model provides a sealing detection device for a tea packaging bag, and relates to the technical field of sealing detection of packaging bags. The device comprises a detection shell, one side of the detection shell is provided with a detection cavity used for containing a packaging bag to be detected, the detection shell is internally provided with an air exhaust cavity communicated with the detection cavity, the outer side wall of the detection shell is provided with air exhaust equipment, and the air exhaust equipment is communicated with the air exhaust cavity. The outer side wall of the detection shell is provided with detection equipment communicated with the air exhaust equipment, and the detection cavity is internally provided with a sealing assembly used for sealing the opening end of the to-be-detected packaging bag; air in a closed area formed by the sealing assembly and the air extraction cavity is extracted by the air extraction equipment in a short time; and then the local part of the to-be-detected packaging bag in the area is pressed, so that the gas enters the detection equipment, and whether a large amount of inert gas exists in the gas is detected, so that whether the packaging bag is completely sealed or not and whether gas leakage occurs or not are judged.

Description

Technical Field

[0001] This utility model relates to the field of packaging bag sealing detection technology, and more specifically, to a device for detecting the sealing performance of tea packaging bags. Background Technology

[0002] After the tea leaves have been processed by fixing and cooled, they need to be packaged. Currently, most tea packaging is done manually. Most tea packaging machines on the market directly fill the tea leaves into packaging bags. When sealing the tea bags, inert gas is injected into the inner wall of the packaging bags to ensure the tea's storage time. After sealing, the bags are output. During the above operation, the packaging bags are not checked to ensure that they are completely sealed, which easily leads to the packaging bags not being sealed tightly.

[0003] Furthermore, existing technologies for inspecting the airtightness of tea packaging bags typically involve manual inspection through multiple steps; this is prone to misjudgment or missed inspections due to human error. This makes it impossible to perform batch and rapid airtightness testing on packaging bags, thus impacting the efficiency of the entire production process. Utility Model Content

[0004] The purpose of this utility model is to provide a tea packaging bag sealing test device, which addresses the shortcomings of the existing technology and solves the problems mentioned in the background.

[0005] The technical solution of this utility model is implemented as follows:

[0006] This utility model provides a tea packaging bag sealing test device, including a test housing, a test chamber for accommodating the packaging bag to be tested on one side of the test housing, an air extraction chamber communicating with the test chamber inside the test housing, an air extraction device on the outer wall of the test housing communicating with the air extraction chamber, a test device on the outer wall of the test housing communicating with the air extraction device, and a sealing component for sealing the opening end of the packaging bag to be tested inside the test chamber.

[0007] In some technical solutions of this utility model, the sealing assembly includes two sealing plates disposed in the detection chamber, and the detection housing is provided with two sets of motion drive assemblies that drive the two sealing plates relative to each other.

[0008] In some technical solutions of this utility model, the drive assembly includes an installation chamber opened in the detection housing, a cam block is rotatably provided in the installation chamber, the outer circumferential wall of the cam block abuts against the outer side wall of the sealing plate, and a drive motor that is connected to the cam block is provided on the outer side wall of the detection housing.

[0009] In some technical solutions of this utility model, the detection chamber is truncated pyramidal in shape, and the small-diameter end of the detection chamber is connected to the air extraction chamber.

[0010] In some technical solutions of this utility model, multiple guide channels are provided on two opposing inner walls of the detection chamber, guide posts are inserted through the guide channels, the guide posts are connected to their corresponding sealing plates, and limit springs connected to the guide posts are provided in the guide channels.

[0011] In some technical solutions of this utility model, multiple air extraction holes are provided in the air extraction chamber along the extension direction of the air extraction chamber, and all air extraction holes are connected to the air extraction equipment.

[0012] In some technical solutions of this utility model, sealing grooves are provided on the opposite side walls of the two sealing plates, and sealing rings are provided on the opposite side walls of the two sealing plates.

[0013] Compared with the prior art, the present invention has at least the following advantages or beneficial effects:

[0014] An air extraction device is bolted to the outer wall of the detection housing. This device is connected to the extraction chamber via a flexible hose. A detection device, also connected to the air extraction device, is located on the outer wall of the detection housing and is used to detect whether the inert gas inside the packaging bag under test is leaking. The detection chamber contains a sealing assembly for sealing the opening of the packaging bag. This assembly also applies downward pressure to the sealed end of the bag, enveloping most of it. This creates a relatively sealed area between the sealing assembly and the extraction chamber when closed, with the sealed end of the bag placed within this area. This improves the effectiveness of the detection process. The airtight structure prevents interference from the external environment, thus improving the testing effect. During testing, the air extraction device within the structure quickly removes air from the enclosed area formed by the sealing components and the extraction chamber. Subsequently, localized pressure is applied to the packaging bag to be tested within this area, causing the gas inside the packaging bag to converge at the sealed end. If the sealed end is not properly sealed, the gas inside the packaging bag will enter the air extraction device through the gap and then into the testing device for detection. This involves checking whether a large amount of inert gas is present in the gas, thereby determining whether the packaging bag is properly sealed and whether there are any gas leaks. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a frontal sectional view of the present invention.

[0018] Figure 3 This is a side sectional view of the present invention.

[0019] Figure 4 This is a schematic diagram of the installation structure of the sealing plate and sealing ring in this utility model.

[0020] Icons: 1. Lower housing; 2. Upper housing; 3. Mounting bracket; 4. Air extraction device; 5. Testing device; 6. Drive motor; 7. Reducer; 8. Testing chamber; 9. Air extraction chamber; 10. Air extraction port; 11. Guide post; 12. Sealing plate; 13. Limit spring; 14. Cam block; 15. Sealing ring. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] Example

[0024] Please refer to Figures 1-4 As shown.

[0025] This utility model provides a device for detecting the sealing performance of tea packaging bags, such as... Figure 1 , Figure 2As shown, the device includes a testing housing, which is divided into an upper housing 2 and a lower housing 1. The upper housing 2 and the lower housing 1 are spliced ​​together and detachably connected by a mounting bracket 3. One side of the testing housing formed by the upper housing 2 and the lower housing 1 has a testing chamber 8 to accommodate the packaging bag to be tested, while the other side is closed. The testing housing has an extraction chamber 9 that communicates with the testing chamber 8. When most of the packaging bag to be tested is placed in the testing chamber 8, the sealed end of the packaging bag is placed in the extraction chamber 9, which facilitates the testing of the sealing performance of the sealed end of the packaging bag. An extraction device 4 is fixed to the outer wall of the testing housing by bolts. The extraction device 4 is connected to the extraction chamber 9 via a flexible hose. The outer wall of the detection housing is equipped with a detection device 5 connected to the extraction device 4, which is used to detect whether the inert gas inside the packaging bag to be tested is leaking. The detection chamber 8 is equipped with a sealing component for sealing the opening end of the packaging bag to be tested. It can also apply downward pressure to the sealed end of the packaging bag to be tested and wrap most of the packaging bag to be tested with the sealing component. This allows the sealing component placed in the extraction chamber 9 to form a relatively sealed area with the extraction chamber 9 in the closed state. The sealed end of the packaging bag to be tested is placed in this area, which can improve the sealing effect of this structure and thus provide the detection effect.

[0026] Preferably, the pumping device 4 is a volumetric pumping device in the prior art, specifically a 2XZ-4 rotary vane vacuum pump. It utilizes the continuous rotation or reciprocating motion of moving parts within the pump casing to change the volume of the working chamber inside the pump casing, thereby generating a pumping effect and achieving a vacuum.

[0027] The detection component is the existing inert gas detection device 5, namely Honeywell's online nitrogen gas detector HNAG1000-N2, which adopts imported electrochemical sensors and microcontroller technology and is suitable for real-time and accurate detection of nitrogen concentration and leakage in various environments.

[0028] In some technical solutions of this utility model, the sealing assembly includes two sealing plates 12 disposed in the detection chamber 8. The sealing plate 12 is composed of a metal plate and a rubber plate, which are bonded together with glue. The detection housing is provided with two sets of motion drive assemblies that drive the two sealing plates 12 to face each other and wrap most of the packaging bag to be tested in the clamping area formed between the two sealing plates 12. At this time, after the two sealing plates 12 in the sealing assembly clamp the part of the packaging bag to be tested, they form a relatively sealed area with the air extraction chamber 9, thereby improving the sealing effect of this structure.

[0029] In some technical solutions of this utility model, the drive assembly includes an installation chamber opened in the detection housing. A cam block 14 is rotatably provided in the installation chamber via an installation shaft. The outer circumferential wall of the cam block 14 abuts against the outer side wall of the sealing plate 12. A drive motor 6 is provided on the outer side wall of the detection housing and is drivenly connected to the cam block 14. The drive motor 6 is drivenly connected to the installation shaft via a coupling. A reducer 7 is provided between the drive motor 6 and the installation shaft to control the rotation speed of the cam block 14, so as to realize the sealing plate 12 to perform periodic reciprocating motion in the detection chamber 8.

[0030] In some technical solutions of this utility model, the detection chamber 8 is frustum-shaped, and the small-diameter end of the detection chamber 8 is connected to the suction chamber 9. This facilitates placing a larger packaging bag to be tested into the detection chamber 8, improving the adaptability of this structure. It also allows the sealing plate 12 located in the detection chamber 8 to have greater movement space when in contact with the packaging bag to be tested, increasing the contact area between the sealing plate 12 and the packaging bag, effectively reducing the gap between them, and improving the sealing effect.

[0031] In some technical solutions of this utility model, multiple guide channels are provided on the two opposing inner walls of the detection chamber 8. Guide posts 11 are inserted through the guide channels and connected to their corresponding sealing plates 12. Limiting springs 13 connected to the guide posts 11 are provided in the guide channels. This ensures that when the two sealing plates 12 reciprocate relative to each other in the detection chamber 8, they have room to retract and prevents the sealing plates 12 from making hard contact with the packaging bag to be tested, thus avoiding damage to the contents of the packaging bag.

[0032] In some technical solutions of this utility model, multiple air extraction holes 10 are provided in the air extraction chamber 9 along the extension direction of the air extraction chamber 9, and all air extraction holes 10 are connected to the air extraction device 4. This improves the air extraction effect of the air extraction device 4; it allows the air extraction device 4 in this structure to extract the air from the closed area formed by the sealing component and the air extraction chamber 9 in a short time; then, it applies pressure to a part of the packaging bag to be tested placed in this area, causing the gas inside the packaging bag to gather at the sealing end; if the sealing end is not properly sealed, the gas inside the packaging bag to be tested will enter the air extraction device 4 through the gap at that point and then enter the testing device 5 for testing, that is, to detect whether a large amount of inert gas is present in the gas, thereby determining whether the packaging bag is completely sealed and whether there is any gas leakage.

[0033] In some technical solutions of this utility model, sealing grooves are provided on the opposite sidewalls of the two sealing plates 12, and sealing rings 15 are provided on the opposite sidewalls of the sealing plates 12. These are used to accommodate most of the sealed bag to be tested within the testing chamber 8, preventing the sealing plates 12 from making hard contact with the bag and causing damage to the contents. The sealing rings 15 are hollow annular capsules filled with gas, and they have a certain degree of contraction capacity. When the sealing rings 15 contact the outer wall of the bag to be tested, they make flexible contact, increasing the contact area and thus improving the sealing effect.

[0034] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for detecting the sealing performance of tea packaging bags, characterized in that, The device includes a detection housing, one side of which has a detection chamber for accommodating a packaging bag to be tested. The detection housing has an air extraction chamber communicating with the detection chamber. An air extraction device is provided on the outer wall of the detection housing and is communicating with the air extraction chamber. A detection device is provided on the outer wall of the detection housing and is communicating with the air extraction device. A sealing assembly for sealing the opening end of the packaging bag to be tested is provided in the detection chamber.

2. The tea packaging bag sealing performance testing device according to claim 1, characterized in that, The sealing assembly includes two sealing plates disposed in the detection chamber, and the detection housing is provided with two sets of motion drive assemblies that drive the two sealing plates relative to each other.

3. The tea packaging bag sealing performance testing device according to claim 2, characterized in that, The drive assembly includes an installation chamber formed within the detection housing, a cam block rotatably disposed within the installation chamber, the outer circumferential wall of the cam block abutting against the outer side wall of the sealing plate, and a drive motor connected to the cam block being disposed on the outer side wall of the detection housing.

4. The tea packaging bag sealing performance testing device according to claim 1, characterized in that, The detection chamber is truncated pyramidal in shape, and the smaller diameter end of the detection chamber is connected to the air extraction chamber.

5. A tea packaging bag sealing performance testing device according to claim 2 or 3, characterized in that, Multiple guide channels are provided on the two opposite inner walls of the detection chamber. Guide posts are inserted through the guide channels and connected to their corresponding sealing plates. Limiting springs connected to the guide posts are provided in the guide channels.

6. The tea packaging bag sealing performance testing device according to claim 1, characterized in that, The air extraction chamber has multiple air extraction holes along its extension direction, and all of the air extraction holes are connected to the air extraction device.

7. The tea packaging bag sealing performance testing device according to claim 2, characterized in that, Both sealing plates have sealing grooves on their opposite sidewalls, and both sealing plates have sealing rings on their opposite sidewalls.

Images