Plastic packaging bag sealing air tightness detection device

Abstract

The utility model relates to a plastic packaging bag sealing air tightness detection device which comprises a detection water tank, a positioning frame is arranged in the detection water tank in a sliding mode, and guide shaft rods are arranged on the four transverse edges of the positioning frame. The utility model relates to the technical field of plastic package air tightness detection equipment. According to the sealing airtightness detection device for the plastic packaging bag, the plastic packaging bag is conveyed into the detection water tank through the feeding structure, after the packaging bag enters the detection water tank, the packaging bag is driven to move towards the bottom end of the detection water tank through the arrangement of the sliding detection belt, and the surface of the sliding detection belt is made of rubber; the friction force between the sliding detection belt and the packaging bag can be effectively increased, when the sliding detection belt passes through the bottom end of the positioning frame, the pressure of the sliding detection belt on the packaging bag is increased, if leakage occurs in the packaging bag at the moment, air in the packaging bag can be discharged through the leakage position and appears in the positioning frame, and then the purpose of effectively improving the detection efficiency can be achieved.

Description

Technical Field

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

[0002] Plastic packaging bags are packaging bags made of plastic as raw materials and are used for various articles in production and life. They are widely used in daily life and industrial production. When making plastic packaging bags, full attention should be paid to the sealing rate of the products to ensure product quality.

[0003] Chinese Patent Publication No. CN215893910U discloses an airtightness detection device for the seal of plastic packaging bags, which relates to the field of packaging machinery. An airtightness detection device for the seal of plastic packaging bags includes a workbench, a transport motor, a lifting cylinder, a limiting column and a water tank. The bottom of the transport motor is fixedly connected to the upper surface of the workbench through a connecting block. The lower surface of the water tank is fixedly connected to the upper surface of the workbench. A drying plate is fixedly installed on the upper surface of the workbench. The drying plate is located on the right side of the water tank. There are two drying plates, which are symmetrically distributed on the upper surface of the workbench. A second conveyor belt is arranged between the two drying plates. In the utility model, a pressing cylinder is provided. After the pressing plate is pressed into the water tank directly below, the pressing cylinder moves downward to apply a certain pressure. Under the action of a certain pressure, whether there are bubbles generated at the seal of the plastic packaging bag is observed through the observation window on the surface of the water tank, so as to achieve the purpose of airtightness detection.

[0004] In the above patent, the detection of plastic packaging bags can only be carried out one by one through suction cups. When detecting a large number of packaging bags, the detection efficiency is low, and it is difficult to meet the detection efficiency on the production line. Summary of the Utility Model

[0005] In view of the deficiencies of the existing technology, the purpose of the present utility model is to provide an airtightness detection device for the seal of plastic packaging bags, so as to solve the technical problems mentioned in the above background art.

[0006] The above technical purpose of the present utility model is achieved through the following technical solutions:

[0007] An airtightness detection device for the seal of plastic packaging bags includes a detection water tank. A positioning frame is slidably arranged inside the detection water tank. Guide shafts are arranged on four transverse sides of the positioning frame, and a sliding detection belt is sleeved on the outer peripheral walls of the guide shafts together, and the sliding detection belt is in a net shape. The two side walls of the positioning frame are attached to the inner walls of the detection water tank, and sliding grooves are opened on both side walls of the positioning frame. A sliding bracket is arranged inside the sliding grooves.

[0008] One end of the detection water tank is provided with a feeding structure, and the end of the detection water tank far from the feeding structure is provided with a discharging structure.

[0009] Further, one end of the bottom of the detection water tank close to the feeding structure is arc-shaped, and the inner wall of the detection water tank is smooth.

[0010] Further, the sliding bracket includes a horizontal rod and a vertical rod. The vertical rod is inserted into the inside of the sliding groove and is slidably connected with the sliding groove. The horizontal rod is fixedly connected with the vertical rod and is slidably connected with the upper end of the detection water tank. A rotating groove is formed on one side of the vertical rod in contact with the sliding groove, and a guiding sliding rod is arranged inside the rotating groove.

[0011] Further, the outer wall of one of the guiding sliding rods is provided with an external thread, and the inner wall of the corresponding sliding groove is provided with an internal thread groove that is in threaded cooperation with the external thread.

[0012] Further, the feeding structure includes two mounting brackets. The mounting brackets are in a "y" shape and are respectively arranged on both sides of one end of the detection water tank. Rollers are arranged at both tops of the mounting brackets, and a feeding conveyor belt is sleeved on the outer walls of the two rollers.

[0013] Further, the discharging structure includes two rotating shafts. The rotating shafts are rotatably arranged on one side of the detection water tank far from the mounting brackets. A discharging conveyor belt is arranged on the outer surfaces of the two rotating shafts, and anti-slip strips are arranged on the outer surface of the discharging conveyor belt.

[0014] In summary, the present utility model includes at least one of the following beneficial technical effects:

[0015] 1. For this plastic packaging bag sealing airtightness detection device, the plastic packaging is transported into the inside of the detection water tank through the feeding structure. After the packaging bag enters the detection water tank, the sliding detection belt drives the packaging bag to move towards the bottom of the detection water tank. The surface of the sliding detection belt is made of rubber, which can effectively increase the friction with the packaging bag. When passing through the bottom of the positioning frame, the pressure of the sliding detection belt on the packaging bag increases. At this time, if the packaging bag leaks, the air inside the packaging bag will be discharged through the leakage point and appear inside the positioning frame, thereby effectively achieving the purpose of improving the detection efficiency;

[0016] 2. For this plastic packaging bag sealing airtightness detection device, through the setting of the horizontal rod, it is used to guide the horizontal orientation of the positioning frame, so as to adjust the distance between the positioning frame and the feeding structure. And through the setting of the vertical rod and the guiding sliding rod, it is used to adjust the vertical position of the positioning frame, so as to adjust the distance between the bottom of the positioning frame and the bottom wall of the detection water tank. Description of the Drawings

[0017] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the attached drawings required for describing the embodiments. Obviously, the attached drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other attached drawings can be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of a device for detecting the airtightness of the sealing of a plastic packaging bag of the present utility model.

[0019] Figure 2 It is a schematic structural diagram of the sliding detection belt of a device for detecting the airtightness of the sealing of a plastic packaging bag of the present utility model.

[0020] Figure 3 It is a schematic structural diagram of the sliding bracket of a device for detecting the airtightness of the sealing of a plastic packaging bag of the present utility model.

[0021] Figure 4 It is a schematic structural diagram of the detection water tank of a device for detecting the airtightness of the sealing of a plastic packaging bag of the present utility model.

[0022] Figure 5 It is a schematic structural diagram of the feeding structure of a device for detecting the airtightness of the sealing of a plastic packaging bag of the present utility model.

[0023] Figure 6 It is a schematic structural diagram of the discharging structure of a device for detecting the airtightness of the sealing of a plastic packaging bag of the present utility model.

[0024] In the figure, 1, detection water tank; 2, positioning frame; 3, guiding shaft rod; 4, sliding detection belt; 5, sliding groove; 6, sliding bracket; 601, horizontal rod; 602, vertical rod; 603, rotating groove; 604, guiding slide rod; 7, feeding structure; 701, mounting bracket; 702, roller; 703, feeding conveyor belt; 8, discharging structure; 801, rotating shaft; 802, discharging conveyor belt; 803, anti-slip strip. Specific embodiments

[0025] The following will further elaborate on the present utility model in detail with reference to the attached drawings.

[0026] Embodiment:

[0027] Refer to Figure 1 - Figure 6, A plastic packaging bag sealing airtightness detection device disclosed by the present utility model includes a detection water tank 1. A positioning frame 2 is slidably arranged inside the detection water tank 1. Guide shaft rods 3 are arranged on four transverse sides of the positioning frame 2. A sliding detection belt 4 is sleeved on the outer peripheral walls of the guide shaft rods 3 together, and the sliding detection belt 4 is in a net shape. The surface of the sliding detection belt 4 is smooth. The two side walls of the positioning frame 2 are in contact with the inner wall of the detection water tank 1, and sliding grooves 5 are opened on both side walls of the positioning frame 2. A sliding bracket 6 is arranged inside the sliding groove 5;

[0028] One end of the detection water tank 1 is provided with a feeding structure 7, and the end of the detection water tank 1 far from the feeding structure 7 is provided with a discharging structure 8.

[0029] In this embodiment, the positioning frame 2 is installed inside the detection water tank 1 through the arrangement of the sliding bracket 6, and the position of the positioning frame 2 inside the detection water tank 1 is adjusted by adjusting the sliding bracket 6, so that the distance between the sliding detection belt 4 and the inner wall of the detection water tank 1 close to the feeding structure 7 is the same as the thickness of the packaging bag to be detected, and the distance between the sliding detection belt 4 at the bottom end of the positioning frame 2 and the bottom wall of the detection water tank 1 is slightly less than that of the packaging bag to be detected. One end of one of the guide shaft rods 3 is provided with a driving motor one;

[0030] When the device is in use, the plastic packaging is transmitted into the detection water tank 1 through the feeding structure 7. After the packaging bag enters the detection water tank 1, the sliding detection belt 4 drives the packaging bag to move towards the bottom end of the detection water tank 1. The surface of the sliding detection belt 4 is made of rubber, which can effectively improve the friction force with the packaging bag. When passing through the bottom end of the positioning frame 2, the pressure of the sliding detection belt 4 on the packaging bag increases. At this time, if the packaging bag leaks, the air inside the packaging bag will be discharged through the leakage point and appear inside the positioning frame 2, so as to effectively detect the leaking plastic packaging bag.

[0031] In a further preferred embodiment of the present utility model, as Figures 1-6 shown, the end of the bottom of the detection water tank 1 close to the feeding structure 7 is in an arc shape, and the inner wall of the detection water tank 1 is smooth.

[0032] In this embodiment, through the arc-shaped corners and the smooth inner wall, the packaging bag can be effectively prevented from being scratched.

[0033] In a further preferred embodiment of the present utility model, as Figures 1-6As shown, the sliding bracket 6 includes a horizontal rod 601 and a vertical rod 602. The vertical rod 602 is inserted into the inside of the sliding groove 5 and is slidably connected to the sliding groove 5. The horizontal rod 601 is fixedly connected to the vertical rod 602 and is slidably connected to the upper end of the detection water tank 1. A rotation groove 603 is formed on one side of the vertical rod 602 in contact with the sliding groove 5, and a guiding slide rod 604 is arranged inside the rotation groove 603.

[0034] In this embodiment, through the arrangement of the horizontal rod 601, it is used to guide the horizontal orientation of the positioning frame 2, so as to facilitate the adjustment of the distance between the positioning frame 2 and the feeding structure 7. And through the arrangement of the vertical rod 602 and the guiding slide rod 604, it is used to adjust the vertical position of the positioning frame 2, so as to facilitate the adjustment of the distance between the bottom end of the positioning frame 2 and the bottom wall of the detection water tank 1.

[0035] In a further preferred embodiment of the present utility model, as Figures 1-6 shown, an external thread is provided on the outer wall of one of the guiding slide rods 604, and an internal thread groove that is threadedly engaged with the external thread is provided on the groove wall of the corresponding sliding groove 5.

[0036] In this embodiment, through the arrangement of the external thread and the internal thread groove, it is convenient to adjust the height of the positioning frame 2 in the detection water tank 1 by rotating the guiding slide rod 604 provided with the external thread.

[0037] In a further preferred embodiment of the present utility model, as Figures 1-6 shown, the feeding structure 7 includes two mounting brackets 701. The mounting brackets 701 are in a Y shape and are respectively arranged on both sides of one end of the detection water tank 1. Rollers 702 are provided at both tops of the mounting brackets 701, and a feeding conveyor belt 703 is sleeved on the outer walls of the two rollers 702.

[0038] In this embodiment, the mounting brackets 701 are used to mount the rollers 702, and through the arrangement of the rollers 702, the feeding conveyor belt 703 is mounted, so as to drive the feeding conveyor belt 703 to introduce the packaging bag into the inside of the detection water tank 1 by the rotation of the rollers 702, and a driving motor two is provided at one end of one of the rollers 702.

[0039] In a further preferred embodiment of the present utility model, as Figures 1-6 shown, the discharging structure 8 includes two rotating shafts 801. The rotating shafts 801 are rotatably arranged on one side of the inside of the detection water tank 1 far from the mounting brackets 701. A discharging conveyor belt 802 is provided on the outer surfaces of the two rotating shafts 801, and an anti-slip strip 803 is provided on the outer surface of the discharging conveyor belt 802.

[0040] In this embodiment, two rotating shafts 801 are used to install the discharge conveyor belt 802, and the discharge conveyor belt 802 cooperates with the anti-slip strips 803 to export the packaging bags in the detection water tank 1. One end of the detection water tank 1 is provided with a feeding conveyor belt for exporting the detected packaging bags to the rear-end equipment. A driving motor three is provided at one end of one of the rotating shafts 801.

[0041] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A plastic packaging bag sealing air tightness detection device, characterized in that: The invention comprises a detection water tank (1), wherein a positioning frame (2) is slidably arranged inside the detection water tank (1), four lateral sides of the positioning frame (2) are all provided with guide shafts (3), and the outer peripheral walls of the guide shafts (3) are collectively sleeved with a sliding detection belt (4), and the sliding detection belt (4) is in a mesh shape, the two side walls of the positioning frame (2) are in contact with the inner wall of the detection water tank (1), and the two side walls of the positioning frame (2) are provided with sliding grooves (5), and a sliding bracket (6) is arranged inside the sliding groove (5); A feeding structure (7) is provided at one end of the detection water tank (1), and a discharging structure (8) is provided at one end of the detection water tank (1) away from the feeding structure (7).

2. A plastic packaging bag sealing air tightness detection device according to claim 1, characterized in that: The bottom end of the detection water tank (1) close to the feeding structure (7) is arc-shaped, and the inner wall of the detection water tank (1) is smooth.

3. A plastic packaging bag sealing air tightness detection device according to claim 2, characterized in that: The sliding bracket (6) comprises a transverse rod (601) and a vertical rod (602); the vertical rod (602) is inserted into the interior of the sliding groove (5) and is slidably connected to the sliding groove (5); the transverse rod (601) is fixedly connected to the vertical rod (602) and is slidably connected to the upper end of the detection water tank (1); a rotating groove (603) is provided on the side of the vertical rod (602) that contacts the sliding groove (5); a guide sliding rod (604) is provided inside the rotating groove (603).

4. A plastic packaging bag sealing air tightness detection device according to claim 3, characterized in that: The outer wall of one of the guide slide bars (604) is provided with an external thread, and the groove wall of the corresponding sliding groove (5) is provided with an internal thread groove threadably matched with the external thread.

5. A plastic packaging bag sealing air tightness detection device according to claim 4, characterized in that: The feeding structure (7) comprises two mounting brackets (701), the mounting brackets (701) are Y-shaped and are respectively arranged on both sides of one end of the detection water tank (1), the two top ends of the mounting brackets (701) are each provided with a roller (702), and the outer walls of the two rollers (702) are jointly sleeved with a feeding conveyor belt (703).

6. A plastic packaging bag sealing air tightness detection device according to claim 5, characterized in that: The discharging structure (8) comprises two rotating shafts (801), the rotating shafts (801) are rotatably arranged on a side of the detection water tank (1) away from the mounting bracket (701), the outer surfaces of the two rotating shafts (801) are jointly provided with a discharging conveyor belt (802), and the outer surface of the discharging conveyor belt (802) is provided with an anti-slip strip (803).

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