A food packaging tightness detection device

Abstract

The utility model relates to food packaging leakproofness detection device technical field, solved for the packaging bag of detecting the air leakage condition, generally will carry out rework packaging to internal food, and place in the water detection air leakage, water flow will enter the packaging bag inside through the air leakage point, cause the influence to the food quality in the packaging bag, cannot carry out rework packaging, cause the waste problem of food. Specific for a kind of food packaging leakproofness detection device, including processing station, the top surface of processing station is fixedly connected with equipment frame and placement groove, the surface of equipment frame is fixedly connected with detection assembly, the adjacent of placement groove is fixedly connected with monitoring assembly;The detection assembly includes a pair of hydraulic push rod fixedly connected in the top surface of equipment frame in axial symmetry, the bottom end of hydraulic push rod penetrates equipment frame and is fixedly connected pressure sensor, the bottom surface of pressure sensor is fixedly connected pressure plate;The monitoring assembly includes equipment box fixedly connected in the top surface of processing station.

Description

Technical Field

[0001] This utility model relates to the technical field of food packaging sealing test devices, specifically a food packaging sealing test device. Background Technology

[0002] A food packaging sealing test device disclosed in authorization announcement number CN221594188U includes a base, with connecting columns fixedly connected to both ends of the upper side of the base, and sliding rods fixedly connected to opposite ends of the upper sides of the two connecting columns. A first sliding sleeve is slidably connected to the outer side of the sliding rod, and a connecting rod is rotatably connected to the surface of the first sliding sleeve. Movable shafts are rotatably connected to both ends of the connecting rod, and a hydraulic cylinder is fixedly connected to the middle of the two sliding rods. A sealing test assembly is fixedly connected to the telescopic end of the hydraulic cylinder; the sealing test assembly includes a top plate.

[0003] The food packaging sealing test device is fixed inside a fixed groove on the upper side of the base plate by placing the base of the packaging box. The extension end of the hydraulic cylinder drives the base plate to move into the test box. At the same time, the water pump injects water into the test box. The observation window is used to check whether there is any air leakage in the packaging box inside the test box, thus realizing the sealing test.

[0004] The technical solution in the prior art uses the presence of air bubbles in water to determine if the packaging platform is leaking. However, for packaging bags that are found to be leaking, the food inside is usually repackaged. When the packaging is placed in water to detect leaks, water will flow into the packaging bag through the leak point, affecting the quality of the food inside the packaging bag, making repackaging impossible and resulting in food waste. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a food packaging sealing detection device. This device solves the problem that when a leak is detected in a packaging bag, the food inside is usually repackaged. However, when the bag is placed in water to detect leaks, water flows into the packaging bag through the leak point, affecting the quality of the food inside and making repackaging impossible, thus resulting in food waste.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a food packaging sealing performance testing device, comprising a processing table, an equipment rack and a placement slot fixedly connected to the top surface of the processing table, a testing component fixedly connected to the surface of the equipment rack, and a monitoring component fixedly connected to the adjacent part of the placement slot;

[0007] The detection assembly includes a pair of hydraulic push rods fixedly connected to the top surface of the equipment frame in an axisymmetric manner. The bottom end of the hydraulic push rods passes through the equipment frame and is fixedly connected to a pressure sensor. The bottom surface of the pressure sensor is fixedly connected to a pressure plate.

[0008] The monitoring component includes a device box fixedly connected to the top surface of the processing table, with a controller nested inside the device box and a display device fixedly connected to the top surface.

[0009] In one specific embodiment, the hydraulic push rod coaxially passes through the top surface of the equipment frame and forms a rigid connection with the upper surface of the pressure sensor, while the lower surface of the pressure sensor forms a planar contact fixed connection with the pressure plate.

[0010] In one specific embodiment, the device box is fixedly connected to the top surface of the processing table by welding, and the controller is embedded in the device box. The controller and the display device are electrically connected through internal cables.

[0011] In one specific embodiment, the pressure sensor is configured to monitor the pressure value between the pressure plate and the processing table in real time. The controller continuously collects pressure data while the hydraulic push rod is in a fixed position. When the packaging bag leaks air, the pressure attenuation between the pressure plate and the processing table triggers a decrease in the display device value.

[0012] In one specific embodiment, the display device determines the sealing performance by displaying the pressure value changes transmitted by the pressure sensor in real time. When the pressure value continues to decrease while the hydraulic push rod maintains a constant displacement, it is considered that there is air leakage in the packaging bag.

[0013] In a specific embodiment, the controller has a preset pressure threshold range. When the pressure value displayed by the display device decreases by more than the set tolerance within the fixed pressure range, a leak alarm signal is automatically triggered.

[0014] Compared with the prior art, this utility model provides a food packaging sealing performance testing device, which has the following beneficial effects:

[0015] In the technical solution disclosed in this utility model, the hydraulic push rod of the detection component drives the pressure plate to perform non-contact mechanical squeezing on the packaging bag in the placement slot. In conjunction with the pressure sensor, the pressure change is monitored in real time. The controller of the monitoring component dynamically analyzes the pressure decay data and provides visual feedback through the display device. This completely avoids the pain point of food contamination inside the packaging bag caused by water immersion detection. It allows the leaking packaging bag to be tested in a non-destructive state, preserving the integrity of the food for rework packaging and eliminating food waste at the source.

[0016] With the detection and monitoring components set in this invention, when the hydraulic push rod maintains a constant displacement, the pressure sensor captures the continuous attenuation of the pressure value between the pressure plate and the processing table. The controller automatically determines leakage and triggers an alarm signal on the display device through a preset pressure threshold range and tolerance mechanism. This pressure-responsive detection logic replaces the traditional visual bubble observation method, significantly improving detection accuracy and efficiency. At the same time, the rigid structure of the equipment frame and the placement slot ensures the positioning stability of the packaging bag. The integrated design of the controller and display device embedded in the equipment box enables real-time monitoring and intelligent processing of detection data, forming an efficient and reliable non-destructive sealing detection system. Attached Figure Description

[0017] 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:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the detection component structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the monitoring component structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the disassembled structure of this utility model.

[0022] In the diagram: 1. Processing table; 2. Equipment rack; 3. Detection component; 31. Hydraulic push rod; 32. Pressure sensor; 33. Pressure plate; 4. Placement slot; 5. Monitoring component; 51. Equipment box; 52. Controller; 53. Display device. Detailed Implementation

[0023] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0024] Figures 1-4 As an embodiment of the present invention, a food packaging sealing test device includes a processing table 1, an equipment rack 2 and a placement slot 4 fixedly connected to the top surface of the processing table 1, a test component 3 fixedly connected to the surface of the equipment rack 2, and a monitoring component 5 fixedly connected to the adjacent part of the placement slot 4.

[0025] The specific problem addressed in this embodiment is that when a leaking packaging bag is detected, the food inside is typically repackaged. However, when the bag is placed in water for leak detection, water flows into the bag through the leak point, affecting the quality of the food inside and preventing repackaging, thus resulting in food waste. This invention utilizes the hydraulic push rod 31 of the detection component 3 to drive the pressure plate 33 to perform non-contact mechanical compression on the packaging bag in the placement groove 4. Combined with the pressure sensor 32 monitoring pressure changes in real time, and the controller 52 of the monitoring component 5 dynamically analyzing the pressure decay data and providing visual feedback via the display device 53, this completely avoids the problem of food contamination inside the packaging bag caused by water immersion detection. It allows the leaking packaging bag to be detected without damage, preserving the integrity of the food for repackaging and eliminating food waste at its source.

[0026] The detection component 3 includes a pair of hydraulic push rods 31 that are fixedly connected to the top surface of the equipment frame 2 in an axisymmetric manner. The bottom end of the hydraulic push rod 31 passes through the equipment frame 2 and is fixedly connected to the pressure sensor 32. The bottom surface of the pressure sensor 32 is fixedly connected to the pressure plate 33.

[0027] The monitoring component 5 includes an equipment box 51 fixedly connected to the top surface of the processing table 1. A controller 52 is internally housed within the equipment box 51, and a display device 53 is fixedly connected to its top surface. In this specific embodiment, the pressure sensor 32 is configured to monitor the pressure value between the pressure plate 33 and the processing table 1 in real time. The controller 52 continuously collects pressure data while the hydraulic push rod 31 is in a fixed position. When the packaging bag leaks air, the pressure attenuation between the pressure plate 33 and the processing table 1 triggers a decrease in the value displayed on the display device 53. When the hydraulic push rod 31 maintains a constant displacement, the pressure sensor 32 captures the continuous attenuation of the pressure value between the pressure plate 33 and the processing table 1. The controller 52 automatically determines leakage and triggers an alarm signal on the display device 53 through a preset pressure threshold range and tolerance mechanism. This pressure-responsive detection logic replaces the traditional visual bubble observation method, significantly improving detection accuracy and efficiency. Simultaneously, the rigid structure of the equipment frame 2 and the placement slot 4 ensures the stability of the packaging bag's positioning. The integrated design of the controller 52 and display device 53 embedded in the equipment box 51 enables real-time monitoring and intelligent processing of detection data, forming an efficient and reliable non-destructive sealing detection system.

[0028] In this specific embodiment, the display device 53 determines the sealing performance by displaying the pressure value changes transmitted by the pressure sensor 32 in real time. When the hydraulic push rod 31 maintains a constant displacement, the pressure value continues to decrease, which is considered as a leak in the packaging bag. When the hydraulic push rod 31 presses down on the packaging bag with a constant displacement, the display device 53 displays the pressure change curve transmitted by the pressure sensor 32 in real time. By observing the continuously decreasing value curve on the display device 53, the operator can directly determine the unsteady pressure drop caused by gas leakage inside the packaging bag, thereby confirming the sealing failure. This method replaces the manual visual bubble judgment method and avoids the limitations of the detection environment.

[0029] In this specific embodiment, the controller 52 is preset with a pressure threshold range. When the pressure value displayed by the display device 53 decreases by more than the set tolerance within the fixed pressure range, a leak alarm signal is automatically triggered. After the controller 52 preloads the pressure threshold range and the attenuation tolerance parameter, when the pressure sensor 32 feedback value under the constant displacement state of the hydraulic push rod 31 decreases beyond the tolerance within the fixed range, the controller 52 immediately outputs an audible and visual alarm signal to the display device 53 and marks the abnormal data point. This automatic diagnosis mechanism eliminates the risk of human error and improves detection efficiency. At the same time, the pressure attenuation threshold setting for alarm triggering avoids interference from non-leakage factors.

[0030] Working Principle: During operation, the packaging bag to be inspected is first placed in the placement slot 4 on the top surface of the processing table 1. The detection component 3 on the equipment frame 2 is activated, and the hydraulic push rod 31 drives the pressure plate 33 below the pressure sensor 32 downward through the equipment frame 2 until the pressure plate 33 contacts the surface of the packaging bag and applies constant displacement compression. At this time, the pressure sensor 32 monitors the pressure data between the pressure plate 33 and the processing table 1 in real time, and transmits the signal to the equipment box 51 of the monitoring component 5 adjacent to the placement slot 4 through a cable. The controller 52 embedded in the equipment box 51 continuously collects the dynamic pressure value during the period when the hydraulic push rod 31 is fixed in position. When there is air leakage in the packaging bag, its internal... The gas release causes the bag to collapse, and the pressure between the pressure plate 33 and the processing table 1 continues to decrease as the gas escapes. The controller 52 identifies the amount of pressure decrease through a built-in algorithm and compares it with a preset threshold range. If the amount of decrease in the fixed pressure range exceeds the set tolerance, the controller 52 immediately sends a command to the display device 53 welded to the top surface of the equipment box 51, triggering a sudden drop in the displayed value and a gas leakage alarm signal. Based on the pressure change curve fed back by the display device 53 in real time, the operator determines that the pressure continues to decrease while the hydraulic push rod 31 maintains a constant displacement, thus confirming that the packaging bag seal has failed. No liquid medium is introduced throughout the process to avoid food contamination.

[0031] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0032] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A food packaging sealing performance testing device, comprising a processing table (1), characterized in that: The top surface of the processing table (1) is fixedly connected to an equipment rack (2) and a placement slot (4). The surface of the equipment rack (2) is fixedly connected to a detection component (3), and the adjacent part of the placement slot (4) is fixedly connected to a monitoring component (5). The detection component (3) includes a pair of hydraulic push rods (31) fixedly connected to the top surface of the equipment frame (2) in an axisymmetric manner. The bottom end of the hydraulic push rod (31) passes through the equipment frame (2) and is fixedly connected to a pressure sensor (32). The bottom surface of the pressure sensor (32) is fixedly connected to a pressure plate (33). The monitoring component (5) includes a device box (51) fixedly connected to the top surface of the processing table (1), with a controller (52) sleeved inside the device box (51) and a display device (53) fixedly connected to the top surface.

2. The food packaging sealing performance testing device according to claim 1, characterized in that: The hydraulic push rod (31) coaxially passes through the top surface of the equipment frame (2) and forms a rigid connection with the upper surface of the pressure sensor (32). The lower surface of the pressure sensor (32) forms a planar contact fixed connection with the pressure plate (33).

3. The food packaging sealing performance testing device according to claim 1, characterized in that: The equipment box (51) is fixedly connected to the top surface of the processing table (1) by welding. The equipment box (51) is embedded with a controller (52). The controller (52) and the display device (53) are electrically connected through internal cables.

4. The food packaging sealing performance testing device according to claim 1, characterized in that: The pressure sensor (32) is configured to monitor the pressure value between the pressure plate (33) and the processing table (1) in real time. The controller (52) continuously collects pressure data while the hydraulic push rod (31) is fixed in position. When the packaging bag leaks air, the pressure attenuation between the pressure plate (33) and the processing table (1) triggers the display device (53) to reduce the value.

5. The food packaging sealing performance testing device according to claim 1, characterized in that: The display device (53) determines the sealing performance by displaying the pressure value changes transmitted by the pressure sensor (32) in real time. When the hydraulic push rod (31) maintains a constant displacement, the pressure value continues to decrease, which is considered as a leak in the packaging bag.

6. The food packaging sealing performance testing device according to claim 1, characterized in that: The controller (52) has a preset pressure threshold range. When the pressure value displayed by the display device (53) decreases by more than the set tolerance within the fixed pressure range, a leak alarm signal is automatically triggered.

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