Packaging bag air tightness detection equipment

Abstract

The utility model relates to the technical field of packaging, and particularly discloses a packaging bag air tightness detection device which comprises a detection box and a box cover, a placing opening is formed in the top end of the detection box, a supporting structure used for placing a packaging bag is arranged in the detection box, and a pressure sensor used for monitoring air pressure in the box is arranged at the top end of the detection box. An inflation pipe is arranged at the top end of the detection box, a folded plate is fixedly installed on the outer wall of one side of the detection box, an air pump is fixedly installed at the top end of the horizontal section of the folded plate, the air outlet end of the air pump is fixedly connected with the end, away from the detection box, of the inflation pipe through a flange, and a gas flow meter is arranged on the side wall of the inflation pipe; and a warning lamp is arranged at the top end of the detection box. The packaging bag air tightness detection device is provided with a quantitative detection structure for the air tightness of a packaging bag, the detection accuracy is improved, the production efficiency is improved, the taking and placing efficiency of the packaging bag is improved, and the air tightness detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging, in particular to an air tightness detection device for packaging bags. Background Art

[0002] Packaging bags refer to bags used to package various supplies, which make it convenient to transport and store goods during the production and circulation process. They are widely used in daily life and industrial production. Generally, all kinds of products need to be packaged in packaging bags before they can be transported and sold. The commodity nature of the packaging itself is becoming more and more obvious. It has become a special product that is no longer dependent on commodity production. It is a product that all commodities cannot do without and is widely used. There are many products that need to be vacuum packaged or inflated and sealed, such as chips, compressed biscuits, puffed foods, etc. Among them, the sealing of the packaging bag and whether it leaks is an important inspection item.

[0003] At present, most factories adopt manual visual inspection, where personnel push the product with a certain force and pull the seal of the packaging bag to check the immediate sealing and leakage of the packaging bag; some factories also check the long-term sealing effect of the packaging bag by letting it stand for a certain period of time, and some factories use soaking in water to confirm whether there is any leakage.

[0004] However, there are some drawbacks in the above-mentioned related technologies, such as:

[0005] 1. Personnel use a certain force to push the product or pull the seal of the packaging bag, and visually check whether the product in the packaging bag shakes or the seal leaks to judge the vacuum effect. Since different people use different forces, there is a large error in the judgment result, and the test result cannot be quantified. In addition, only vacuum-packed products can be checked, and air-packed products cannot be checked.

[0006] 2. Personnel check the long-term sealing effect of the packaging bag by leaving the product alone for a certain period of time, which increases the working time and affects the production efficiency.

[0007] 3. Soaking in water or pulling the packaging bag may cause damage to the product and the packaging bag itself. This is a destructive inspection and is not very practical. Utility Model Content

[0008] In order to solve the above problems existing in the prior art, the utility model provides a packaging bag air tightness detection device, which can overcome the above technical defects.

[0009] The purpose of the utility model can be achieved through the following technical solutions:

[0010] A packaging bag air tightness testing device comprises a testing box and a box cover, wherein the top of the testing box is provided with a placement opening, and the inside is provided with a supporting structure for placing the packaging bag;

[0011] A pressure sensor for monitoring the air pressure in the box is provided at the top of the detection box, an inflation tube is provided at the top of the detection box, a folding plate is fixedly installed on the outer wall of one side of the detection box, an air pump is fixedly installed on the top of the horizontal section of the folding plate, an air outlet end of the air pump is fixedly connected to an end of the inflation tube away from the detection box through a flange, a gas flow meter is provided on the side wall of the inflation tube, and a warning light is provided at the top of the detection box. The packaging bag is placed in the supporting structure, the box cover and the detection box are closed, the air pump sends air from the inflation tube into the detection box, and cooperates with the gas flow meter to deliver pressure to the detection box. The gas flow meter uploads data to the PLC controller, calculates the pressurization value, and compares the pressurization value with the change value of the pressure sensor. When the difference is not within the preset range, the air tightness is unqualified and the warning light flashes.

[0012] Preferably, the box cover matches the placement opening of the detection box, the placement opening of the detection box is provided with an enclosure, the outer wall of the enclosure is provided with a sealing ring, and the sealing ring is fitted and slidably connected to the box cover.

[0013] Preferably, the support structure includes four support rods, the top wall of the box cover is fixedly connected to a lifting plate via the four support rods, an open box is fixedly installed on the top of the lifting plate, and a driving component for driving the lifting plate to rise and fall is arranged in the detection box.

[0014] Preferably, the driving assembly includes two U-shaped frames, and the two U-shaped frames are fixedly installed between the top wall and the bottom wall of the detection box, and two limit rods are fixedly installed between the top wall and the bottom wall of the U-shaped frame, and the limit rods are penetrated and slidably connected to the lifting plate, and a support plate is fixedly installed on the side of the vertical section of the U-shaped frame close to the open box, and a screw is penetrated and rotatably installed between the support plate and the top horizontal section of the U-shaped frame, and the screw is penetrated and threadedly connected to the lifting plate, and a driving mechanism for driving the two screws to rotate synchronously is arranged between the two U-shaped frames.

[0015] Preferably, the driving mechanism includes a servo motor, a transmission rod is passed through and rotatably installed between the vertical sections of the two U-shaped frames, a gear set is arranged between the bottom of the screw rod and the transmission rod, the servo motor is fixedly installed on the side of one of the vertical sections of the U-shaped frame away from the open box, and the output shaft of the servo motor is fixedly connected to the shaft of the transmission rod through a coupling.

[0016] Preferably, the gear group includes two bevel gears that are meshed and vertically distributed. The two bevel gears of the gear group are fixedly mounted on the shafts of the screw and the transmission rod, respectively. The servo motor drives the transmission rod to rotate, and cooperates with the two sets of gear groups to drive the two screws to rotate synchronously, and then drives the lifting plate and the open box to rise and fall synchronously. In conjunction with the four support rods, the box cover rises and falls synchronously, thereby improving the efficiency of taking and placing packaging bags.

[0017] The beneficial effects of the utility model are:

[0018] 1. By setting up a test box and a supporting structure, the packaging bag is placed in an open box, the box cover and the test box are closed, and the air pump sends air from the inflation pipe into the test box, and cooperates with the gas flow meter to deliver a pressure of 1-3Mpa into the test box. The gas flow meter uploads the data to the PLC controller, calculates the pressurization value, and compares the pressurization value with the change value of the pressure sensor. When the difference is not within the preset range, the air tightness is unqualified and the warning light flashes. It has a quantitative detection structure for the air tightness of the packaging bag, which improves the detection accuracy and production efficiency.

[0019] 2. By setting up the driving assembly, the servo motor drives the transmission rod to rotate, and cooperates with two sets of gear sets to drive the two screws to rotate synchronously, and then drives the lifting plate and the open box to rise and fall synchronously, and cooperates with four support rods to lift and fall the box cover synchronously, which improves the efficiency of taking and placing packaging bags and improves the efficiency of air tightness detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a cross-sectional view of the detection box in the utility model;

[0023] Figure 3 This is an installation structure diagram of the driving mechanism in the utility model;

[0024] Figure 4 This is an installation structure diagram of the box cover in the open state in the utility model.

[0025] Description of main component symbols:

[0026] In the figure: 1. detection box; 2. box cover; 201, enclosure; 202, sealing ring; 3. support rod; 4. lifting plate; 5. open box; 6. U-shaped frame; 7. limit rod; 8. support plate; 9. screw; 10. transmission rod; 11. gear set; 12. servo motor; 13. pressure sensor; 14. inflation tube; 15. folding plate; 16. air pump; 17. gas flow meter; 18. warning light; 19. PLC controller. DETAILED DESCRIPTION

[0027] In order to further explain the technical means and effects adopted by the utility model to achieve the predetermined utility model purpose, the specific implementation methods, structures, features and effects of the utility model are clearly and completely described below in combination with the accompanying drawings and preferred embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present application, it should be understood that the orientation or position relationship indicated by "inside" or "outside" etc. is based on the orientation or position described in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, a specific orientation structure and operation, and therefore cannot be understood as a limitation on the present application.

[0029] Reference Figure 1-Figure 2 , is a packaging bag air tightness detection device disclosed by the utility model, including a detection box 1 and a box cover 2, a placement opening is arranged at the top of the detection box 1, the box cover 2 matches the placement opening of the detection box 1, an enclosure 201 is arranged at the placement opening of the detection box 1, a sealing ring 202 is arranged on the outer wall of the enclosure 201, the sealing ring 202 is fitted with the box cover 2 and is slidably connected, the enclosure 201 of the placement opening of the detection box 1 and the sealing ring 202 are slidably connected with the box cover 2, thereby ensuring the air tightness between the detection box 1 and the box cover 2.

[0030] Reference Figure 1-Figure 2 A support structure for placing packaging bags is provided in the detection box 1, and the support structure includes four support rods 3. The top wall of the box cover 2 is fixedly connected to a lifting plate 4 through the four support rods 3, which has a supporting function. An open box 5 is fixedly installed on the top of the lifting plate 4, and the lifting plate 4 cooperates with the open box 5 to support the packaging bags.

[0031] Reference Figure 1-Figure 3, a driving assembly for driving the lifting plate 4 to rise and fall is provided in the detection box 1, and the driving assembly includes two U-shaped frames 6, and the two U-shaped frames 6 are fixedly installed between the top wall and the bottom wall of the detection box 1, and have a supporting function. Two limit rods 7 are fixedly installed between the top wall and the bottom wall of the U-shaped frame 6, and the limit rod 7 is penetrated and slidably connected with the lifting plate 4, and has a supporting function. A support plate 8 is fixedly installed on one side of the vertical section of the U-shaped frame 6 close to the open box 5, and has a supporting function. A screw rod 9 is penetrated and rotatably installed between the support plate 8 and the top horizontal section of the U-shaped frame 6, and the screw rod 9 is penetrated and threadedly connected with the lifting plate 4. A driving mechanism for driving the two screw rods 9 to rotate synchronously is provided between the two U-shaped frames 6, and the driving mechanism includes a servo motor 12, and the two screw rods 9 are penetrated and rotated between the vertical sections of the two U-shaped frames 6. A transmission rod 10 is installed to have a supporting function. A gear set 11 is arranged between the bottom of the screw 9 and the transmission rod 10. The gear set 11 includes two bevel gears that are meshed and vertically distributed. The two bevel gears of the gear set 11 are respectively fixedly installed on the shafts of the screw 9 and the transmission rod 10, and have a meshing transmission function. The servo motor 12 is fixedly installed on one side of the vertical section of one of the U-shaped frames 6 away from the open box 5. The output shaft of the servo motor 12 is fixedly connected to the shaft of the transmission rod 10 through a coupling. The servo motor 12 drives the transmission rod 10 to rotate, and cooperates with the two sets of gear sets 11 to drive the two screws 9 to rotate synchronously, and then drives the lifting plate 4 and the open box 5 to rise and fall synchronously. Cooperating with the four support rods 3, the box cover 2 rises and falls synchronously, and the box cover 2 is opened or closed, which is convenient for taking and placing the package.

[0032] Reference Figure 1-Figure 4 A pressure sensor 13 for monitoring the air pressure in the box is arranged at the top of the detection box 1, an air filling pipe 14 is arranged at the top of the detection box 1, which has a drainage function, a folding plate 15 is fixedly installed on the outer wall of one side of the detection box 1, which has a supporting function, an air pump 16 is fixedly installed on the top of the horizontal section of the folding plate 15, and the air outlet end of the air pump 16 is fixedly connected to the end of the air filling pipe 14 away from the detection box 1 through a flange, a gas flow meter 17 is arranged on the side wall of the air filling pipe 14, a warning light 18 is arranged at the top of the detection box 1, and a PLC controller 19 is fixedly installed on the outer wall of one side of the detection box 1. The servo motor 12, the air pump 16 and the warning light 1 8 are connected to the output end of the PLC controller 19, the pressure sensor 13 and the gas flow meter 17 are connected to the input end of the PLC controller 19, the packaging bag is placed in the open box 5, the box cover 2 and the detection box 1 are closed, the air pump 16 sends air from the inflation tube 14 into the detection box 1, and cooperates with the gas flow meter 17 to deliver a pressure of 1-3Mpa into the detection box 1, the gas flow meter 17 uploads the data to the PLC controller 19, calculates the pressurization value, compares the pressurization value with the change value of the pressure sensor 13, when the difference is not within the preset range, the air tightness is unqualified, the warning light 18 flashes, and when the difference is within the preset range, the air tightness is qualified.

[0033] The working principle and use process of the utility model are as follows: the servo motor 12 drives the transmission rod 10 to rotate, and cooperates with the two sets of gear sets 11 to drive the two screw rods 9 to rotate synchronously, and then drives the lifting plate 4 and the open box 5 to rise and fall synchronously, cooperates with the four support rods 3, and the box cover 2 rises and falls synchronously to complete the opening or closing of the box cover 2, puts the packaging bag into the open box 5, and the box cover 2 and the detection box 1 are closed. The air pump 16 sends air from the inflation tube 14 into the detection box 1, and cooperates with the gas flow meter 17 to deliver a pressure of 1-3Mpa into the detection box 1. The gas flow meter 17 uploads the data to the PLC controller 19, calculates the pressurization value, and compares the pressurization value with the change value of the pressure sensor 13. When the difference is not within the preset range, the air tightness is unqualified, and the warning light 18 flashes. When the difference is within the preset range, the air tightness is qualified.

[0034] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A packaging bag air tightness testing device, comprising a testing box (1) and a box cover (2), characterized in that: The top of the detection box (1) is provided with a placement opening, and a support structure for placing packaging bags is provided inside the (1); The top of the detection box (1) is provided with a pressure sensor (13) for monitoring the air pressure in the box, the top of the detection box (1) is provided with an air filling pipe (14), a folding plate (15) is fixedly installed on the outer wall of one side of the detection box (1), an air pump (16) is fixedly installed on the top of the horizontal section of the folding plate (15), the air outlet end of the air pump (16) is fixedly connected to the end of the air filling pipe (14) away from the detection box (1) through a flange, a gas flow meter (17) is provided on the side wall of the air filling pipe (14), and a warning light (18) is provided on the top of the detection box (1).

2. The packaging bag air tightness detection device according to claim 1, characterized in that: The box cover (2) matches the placement opening of the detection box (1); the placement opening of the detection box (1) is provided with an enclosure (201); the outer wall of the enclosure (201) is provided with a sealing ring (202); the sealing ring (202) is fitted and slidably connected to the box cover (2).

3. The packaging bag air tightness detection device according to claim 1, characterized in that: The support structure comprises four support rods (3), the top wall of the box cover (2) is fixedly connected to a lifting plate (4) via the four support rods (3), an open box (5) is fixedly mounted on the top of the lifting plate (4), and a driving component for driving the lifting plate (4) to rise and fall is arranged in the detection box (1).

4. The packaging bag air tightness detection device according to claim 3, characterized in that: The driving assembly comprises two U-shaped frames (6), the two U-shaped frames (6) are fixedly installed between the top wall and the bottom wall of the detection box (1), two limit rods (7) are fixedly installed between the top wall and the bottom wall of the U-shaped frame (6), the limit rods (7) are penetrated and slidably connected with the lifting plate (4), a support plate (8) is fixedly installed on the side of the vertical section of the U-shaped frame (6) close to the open box (5), a screw rod (9) is penetrated and rotatably installed between the support plate (8) and the top horizontal section of the U-shaped frame (6), the screw rod (9) is penetrated and threadedly connected with the lifting plate (4), and a driving mechanism for driving the two screw rods (9) to rotate synchronously is arranged between the two U-shaped frames (6).

5. The packaging bag air tightness detection device according to claim 4, characterized in that: The driving mechanism comprises a servo motor (12), a transmission rod (10) passes through and is rotatably mounted between the vertical sections of the two U-shaped frames (6), a gear set (11) is arranged between the bottom of the screw rod (9) and the transmission rod (10), the servo motor (12) is fixedly mounted on a side of the vertical section of one of the U-shaped frames (6) away from the open box (5), and the output shaft of the servo motor (12) is fixedly connected to the shaft body of the transmission rod (10) through a coupling.

6. The packaging bag air tightness detection device according to claim 5, characterized in that: The gear set (11) comprises two bevel gears which are meshed and vertically distributed, and the two bevel gears of the gear set (11) are respectively fixedly mounted on the shafts of the screw rod (9) and the transmission rod (10).

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