CN117367683A - Vacuum detection device based on vacuum packaging and detection method thereof - Google Patents
Vacuum detection device based on vacuum packaging and detection method thereof Download PDFInfo
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- CN117367683A CN117367683A CN202311678347.7A CN202311678347A CN117367683A CN 117367683 A CN117367683 A CN 117367683A CN 202311678347 A CN202311678347 A CN 202311678347A CN 117367683 A CN117367683 A CN 117367683A
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- air leakage
- packaging bag
- detection
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- 238000001514 detection method Methods 0.000 title claims abstract description 85
- 238000009461 vacuum packaging Methods 0.000 title claims abstract description 43
- 238000004806 packaging method and process Methods 0.000 claims abstract description 57
- 238000007789 sealing Methods 0.000 claims abstract description 36
- 238000007599 discharging Methods 0.000 claims abstract description 15
- 238000007689 inspection Methods 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 238000010998 test method Methods 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 238000007654 immersion Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 4
- 230000002950 deficient Effects 0.000 description 4
- 235000013305 food Nutrition 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000012856 packing Methods 0.000 description 3
- 239000003086 colorant Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3218—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators for flexible or elastic containers
Abstract
The invention relates to the technical field of vacuum detection, in particular to a vacuum detection device based on vacuum packaging and a detection method thereof. The invention provides a vacuum detection device based on vacuum packaging, which comprises a vacuum packaging machine, a discharging device and a packaging bag, wherein the vacuum packaging machine is provided with a plurality of vacuum chambers for vacuum and heat sealing of the packaging bag; further comprises: the air leakage indicator comprises a cylinder body and a cylinder body which are elastically connected inside and outside, the air leakage indicator has a normal state and a shortened state, and the air leakage indicator is converted from the normal state to the shortened state by the packaging bag after vacuum packaging. The device replaces the method of water immersion vacuum detection, can carry out comprehensive detection, improves the product quality, and can also observe or self-detect the pressure of the air leakage indicator, can also know whether air leakage exists, and improves the user experience.
Description
Technical Field
The invention relates to the technical field of vacuum detection, in particular to a vacuum detection device based on vacuum packaging and a detection method thereof.
Background
Vacuum packaging is a technique for reducing air pressure in packaging materials (most commonly in packaging bags) to extend the shelf life of food products and to prevent the effects of oxygen, moisture and microorganisms on the food products. Vacuum packaging machines are various, and as shown in fig. 6, the vacuum packaging machine 100 has a plurality of vacuum chambers 101 for vacuum-pumping and heat-sealing a package 300 filled with food, and the vacuum-heat-sealed package 300 is discharged from the vacuum chambers 101 after being clamped by a clamp 201 in a discharging apparatus 200 and continuously conveyed by a conveyor 202.
The prior art generally adopts a device of a water immersion method to carry out vacuum detection, namely, a packaging bag is immersed in water to observe whether bubbles are generated or not, the method is complicated in steps and takes a certain time, the method is suitable for sampling detection, comprehensive detection cannot be carried out, the high quality of products is difficult to ensure, the air leakage of the packaging bag is mostly realized through tiny air holes or gaps, the interval time from the end of vacuum packaging to the vacuum detection is shorter, the entering packaging air is smaller, and the unobserved air passes due to the fact that the entering packaging air is smaller when the water immersion method is used for vacuum detection.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a vacuum detection device based on vacuum packaging and a detection method thereof, which can effectively solve the problem that the water immersion method in the prior art can not be observed due to the fact that the air entering the packaging air is less and the air bubbles are smaller.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
the invention provides a vacuum detection device based on vacuum packaging, which comprises a vacuum packaging machine, a discharging device and a packaging bag, wherein the vacuum packaging machine is provided with a plurality of vacuum chambers for vacuum and heat sealing of the packaging bag;
further comprises:
the air leakage indicator comprises a cylinder body and a cylinder body which are elastically connected inside and outside, wherein the air leakage indicator has a normal state and a shortened state, and the air leakage indicator is converted from the normal state to the shortened state by the packaging bag after vacuum packaging; and
and a vacuum detection assembly for vacuum detecting the air leakage indicator.
Further, the sealing area is semi-sealed at the part of the sealing end of the packaging bag, the packaging bag is provided with sealing points which are sealed by broken line sections, an air gap is formed between every two sealing points, and the sealing area is communicated with other areas of the packaging bag through the air gap.
Further, the air leakage indicator further comprises: the cylinder body is internally provided with a sealing groove which is in clearance fit with the cylinder body from the opening, at least one sealing ring is embedded on the outer peripheral surface of the cylinder body, a limiting ring is fixed on the inner wall of the cylinder body below the sealing groove, a spring is fixed at the inner bottom end of the cylinder body, and the spring is fixed with the lower end of the cylinder body.
Further, an air outlet hole is formed in the cylinder, and a hole plug is in interference fit with the air outlet hole.
Further, the vacuum detection assembly comprises a frame, a second conveyor belt is arranged in the frame, a mounting plate is fixed at the upper end of the frame, a second telescopic member is fixed on the side face of the mounting plate, a pushing plate is fixed at the telescopic end of the second telescopic member, a pushing groove for accommodating the pushing plate and pushing out the packaging bag is formed in the frame, and a guide plate is fixed on the other side of the frame opposite to the second telescopic member and below the pushing groove.
Further, the first telescopic part is fixedly arranged at the upper end of the mounting plate, the first telescopic end of the first telescopic part is connected with the detection plate through the pressure sensor, the distance sensor is fixed at the upper end of the detection plate, and the pressure sensor and the distance sensor are connected with the controller.
Further, the outer circumferential surface of the cylinder is coated with a color different from the external environment;
the vacuum detection assembly further comprises a color identification sensor fixedly arranged on the inner side surface of the mounting plate, and the color identification sensor is connected with a controller.
The detection method of the vacuum detection device based on vacuum packaging comprises the following steps:
the vacuum detection assembly is connected to one side of the discharging device, the packaging bag subjected to vacuum heat sealing is connected to the corresponding position of the vacuum detection assembly, the telescopic piece is pushed downwards to push out the detection plate, the air leakage indicator is pressed down, the pressure signal is monitored in real time, the distance sensor is simultaneously used for monitoring the distance signal from the air leakage indicator to the inner top end of the mounting plate in real time, the distance signal is respectively converted into an electric signal and sent to the controller, if the pressure is kept constant, the distance is unchanged, the air leakage is indicated to be qualified, if the pressure is gradually increased, the distance is also gradually increased, the air leakage is indicated to be unqualified, the telescopic piece is pushed out of the pushing plate, the packaging bag is pushed away from the second conveyor belt through the pushing groove, and then the second conveyor belt is continuously conveyed.
The detection method of the vacuum detection device based on vacuum packaging presets the color characteristics of the column;
the vacuum detection assembly is connected to one side of the discharging device, the vacuum heat-sealed packaging bag is connected to the vacuum detection assembly for conveying, the color recognition sensor monitors the air leakage indicator in real time, if the preset color feature is not recognized, the vacuum detection assembly continues to convey, if the preset color feature is recognized, the conveying belt II conveys the packaging bag to the corresponding position of the vacuum detection assembly and then stops conveying, the telescopic piece II pushes out the pushing plate to push the packaging bag away from the conveying belt II through the pushing groove, and then the conveying belt II continues conveying.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
this device is through setting up the heat-seal area in addition in the wrapping bag to place the gas leakage indicator in wherein, other areas of wrapping bag are in same gaseous state environment through the heat-seal area, utilize vacuum packaging to preset pressure to the gas leakage indicator, in case take place the gas leakage, preset pressure is also released, improve the speed that air passed through the gas leakage position and get into in the wrapping bag, and detect the state of gas leakage indicator through pressure or colour or pressure and colour combination, thereby judge whether the wrapping bag gas leakage, replace the method of water logging vacuum detection, can carry out comprehensive detection, improve product quality, and the user also can observe or pressure self-checking to the gas leakage indicator, also can know whether gas leakage, promote user experience.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a top view of a leak indicator of the present invention;
FIG. 2 is a cross-sectional view of the leak indicator of the present invention in the direction A-A;
FIG. 3 is a schematic view of a vacuum detection assembly according to the present invention;
FIG. 4 is a schematic view of the structure of the package of the present invention;
FIG. 5 is a coordinate system of the pressure and distance sensor to mounting plate spacing relationship of the leak indicator of the present invention;
fig. 6 is a schematic structural view of a prior art vacuum packing machine and a discharging apparatus.
Reference numerals in the drawings represent respectively: 1. a leak indicator; 11. a cylinder; 12. a column; 13. a seal ring; 14. a limiting ring; 15. a spring; 16. an air outlet hole; 17. a hole plug; 2. a vacuum detection assembly; 21. a frame; 22. a second conveyor belt; 23. a pushing groove; 24. a mounting plate; 25. a pushing plate; 26. a detection plate; 27. a distance sensor; 28. a material guide plate; 100. vacuum packaging machine; 101. a vacuum chamber; 200. a discharging device; 201. a vacuum chamber; 202. a first conveyor belt; 300. packaging bags; 301. heat sealing points; 302. a ventilation gap; 303. and (5) heat sealing the area.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention is further described below with reference to examples.
The device is provided with the heat sealing area 303 in the packaging bag 300, the air leakage indicator 1 is arranged in the heat sealing area 303, other areas of the packaging bag 300 are in the same gaseous environment, the vacuum packaging is utilized to preset pressure on the air leakage indicator 1, once air leakage occurs, the preset pressure is released, the speed of air entering the packaging bag 300 through the air leakage position is improved, the state of the air leakage indicator 1 is detected through pressure or color or combination of pressure and color, so that whether the packaging bag 300 leaks air is judged, the method of water immersion vacuum detection is replaced, comprehensive detection can be carried out, the product quality is improved, a user can observe or self-detect the air leakage indicator 1, whether the air leakage occurs can be known, and the user experience is improved.
Example 1:
referring to fig. 6, a vacuum inspection apparatus based on vacuum packaging, comprising a vacuum packaging machine 100, a discharging device 200 and a packaging bag 300 in the prior art, wherein the vacuum packaging machine 100 is provided with a plurality of vacuum chambers 101 for vacuum and heat-sealing the packaging bag 300, the discharging device 200 is provided with a clamp 201 and a first conveyor belt 202 for clamping and pulling out the vacuum and heat-sealed packaging bag 300, in the prior art, after the vacuum chambers 101 vacuum heat-seal products, the clamp 201 stretches into the vacuum chambers 101 and clamps the packaging bag 300, and then pulls out onto the first conveyor belt 202, and the first conveyor belt 202 continues to convey for subsequent vacuum inspection.
Before vacuum packaging, the air leakage indicator 1 is fixed in the packaging bag 300, referring to fig. 1, the packaging bag 300 may be pre-treated before vacuum packaging, and the pre-treatment may be performed by using existing mechanical equipment or self-setting equipment, that is, a heat sealing area 303 is semi-sealed at a part of the sealing end of the packaging bag 300, where the part may be any position near the sealing end of the packaging bag 300, and may be a corner or a middle part as shown in fig. 4, the semi-heat sealing refers to the packaging bag 300 having heat sealing points 301 with broken line segments, an air vent gap 302 is formed between each two heat sealing points 301, the heat sealing area 303 is kept in communication with other areas of the packaging bag 300 through the air vent gap 302, so that the heat sealing area 303 and the other areas of the packaging bag 300 are in the same gas state including vacuum or atmosphere, and the air leakage indicator 1 is fixed in the heat sealing area 303.
The air leakage indicator 1 comprises a cylinder 12 and a cylinder 11 which are elastically connected inside and outside, the air leakage indicator 1 has a normal state and a shortened state, and the vacuum-packed packaging bag 300 (under vacuum suction force) enables the air leakage indicator 1 to be converted from the normal state to the shortened state. Specifically, the cylinder 11 is provided with a seal groove in clearance fit with the cylinder 12 from the opening inwards, the outer circumferential surface of the cylinder 12 is embedded with at least one seal ring 13, the inner wall of the cylinder 11 is fixed with a limit ring 14 below the seal groove, the inner bottom end of the cylinder 11 is fixed with a spring 15, the spring 15 is fixed with the lower end of the cylinder 12, most of the cylinder 12 in normal state protrudes out of the cylinder 11, during vacuum pumping, the packing bag 300 gradually presses the cylinder 12 inwards to compress the spring 15 until being limited by the limit ring 14, and a compressed air cavity is formed between the cylinder 12 and the cylinder 11 to store energy, once the packing bag 300 leaks air, the air leakage indicator 1 can automatically release energy to be converted into a normal state after the packing bag 300 is separated from the vacuum chamber 101. In order to facilitate the installation of the cylinder 12 and further provide the air outlet hole 16 in the cylinder 12, the air outlet hole 16 is provided with a hole plug 17 in an interference fit, it should be noted that before the cylinder 12 is pressed into the cylinder 11, the hole plug 17 does not seal the air outlet hole 16, one end of the spring 15 is fixed with the cylinder 12 by welding or bonding, etc., and after the spring 15 is partially pulled into the cylinder 11 under the tension of the spring 15, the hole plug 17 is used to seal the air outlet hole 16 to maintain the sealing environment among the air outlet hole 16, the cylinder 12 and the cylinder 11.
In order to improve the automation of the device, a vacuum detection assembly 2 for performing vacuum detection on the air leakage indicator 1 is additionally arranged, the vacuum detection assembly 2 comprises a frame 21, a second conveyor belt 22 is installed in the frame 21, a mounting plate 24 is fixed at the upper end of the frame 21, a second telescopic member is fixed on the side surface of the mounting plate 24, a pushing plate 25 is fixed at the telescopic end of the second telescopic member, a pushing groove 23 for accommodating the pushing plate 25 and pushing the packaging bag 300 is formed in the frame 21, and a guiding plate 28 is fixed on the other side opposite to the second telescopic member and below the pushing groove 23 of the frame 21. Once the air leakage is detected, the second telescopic member can be pushed out of the pushing plate 25 to push the air leakage defective products out of the second conveyor belt 22 through the pushing groove 23, and the air leakage defective products are received by the collecting box under the guidance of the material guiding plate 28.
The telescopic part I is fixedly arranged at the upper end of the mounting plate 24, the telescopic end of the telescopic part I is connected with the detection plate 26 through a pressure sensor, the distance sensor 27 is fixed at the upper end of the detection plate 26, the pressure sensor and the distance sensor 27 are connected with a controller, the telescopic part I and the telescopic part II can adopt an air cylinder and are connected with the controller through signals, and the sensor, the telescopic part and the controller in the device are all existing products.
Referring to fig. 5, the broken line indicates a defective air leakage product N, the solid line indicates a defective air leakage product Y, the lateral direction indicates the pressure P to the air leakage indicator 1, and the longitudinal direction indicates the distance L from the distance sensor 27 to the mounting plate 24, and the following detection method can be provided according to the stretchability of the air leakage indicator 1 in the occurrence of air leakage: the detection method of the vacuum detection device based on vacuum packaging comprises the following steps: the vacuum detection assembly 2 is connected and arranged on one side of the discharging equipment 200, the vacuum heat-sealed packaging bag 300 is connected and conveyed to the corresponding position of the vacuum detection assembly 2, the telescopic piece is pushed downwards out of the detection plate 26, the air leakage indicator 1 is pressed down and the pressure signal is monitored in real time, meanwhile, the distance sensor 27 monitors the distance signal from the distance signal to the inner top end of the mounting plate 24 in real time and converts the distance signal into an electric signal to be sent to the controller, if the pressure is kept constant and the distance is unchanged, the air leakage is qualified, if the pressure is gradually increased and the distance is also gradually increased, the air leakage is unqualified, the telescopic piece II is pushed out of the pushing plate 25 to push the packaging bag 300 away from the second conveyor belt 22 through the pushing groove 23, and then the second conveyor belt 22 continues to convey.
Example 2:
referring to fig. 1, 2 and 4, the present embodiment is different from the air leakage indicator 1 in that:
the outer circumferential surface of the column body 12 is coated with colors different from the external environment, and the colors are different from the external environment, and can be red, yellow, green and the like; the vacuum detecting assembly 2 further includes a color recognition sensor (not shown) fixedly provided on the inner side of the mounting plate 24 (for detecting the side of the package 300, the corresponding position of the air leakage indicator 1), the color recognition sensor being connected to a controller in which the above-mentioned color is preset.
The following detection method can be provided according to the color exposure of the outer peripheral surface of the cylinder 12 caused by the stretchability of the air leakage indicator 1 when air leakage occurs: presetting color characteristics of the column 12 based on a detection method of a vacuum detection device of vacuum packaging; the vacuum detection assembly 2 is connected to one side of the discharging device 200, the vacuum heat-sealed packaging bag 300 is connected to the vacuum detection assembly 2 for transmission, the color recognition sensor monitors the air leakage indicator 1 in real time, if the preset color feature is not recognized, the vacuum detection assembly 2 continues to keep transmitting, if the preset color feature is recognized, the transmission belt II 22 transmits the packaging bag 300 to the corresponding position of the vacuum detection assembly 2 and then stops transmitting, the telescopic piece II pushes out the pushing plate 25 to push the packaging bag 300 away from the transmission belt II 22 through the pushing groove 23, and then the transmission belt II 22 continues transmitting.
Example 3:
this embodiment combines the embodiments 1 and 2, and can detect both pressure and color based on the stretchability of the leak indicator 1 when a leak occurs, and the detection method refers to the steps of embodiments 1 and 2.
It should be noted that, when vacuum detection is performed using color, it is necessary to ensure that the package bag 300 is made of a transparent material, and when vacuum detection is performed using pressure, there is no limitation in transparency of the material, and the material strength is not deformed by expansion and contraction of 1.
It should be emphasized that, because the air leakage indicator 1 is sold along with food after vacuum detection, the manager can observe and distinguish the color of the external environment through the cylinder 12, the state that the cylinder 12 protrudes out of the cylinder 11 or perform pressure self-checking to distinguish the vacuum state when purchasing, so that the manager can reject the air leakage product in time and prevent the consumer from purchasing the air leakage product, the air leakage product is prevented from being generated and purchased due to factors such as transportation, management, and the like, the product image is maintained, and the air leakage indicator 1 has certain cost, so that the air leakage indicator is suitable for use of high-quality products.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; these modifications or substitutions do not depart from the essence of the corresponding technical solutions from the protection scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. The vacuum detection device based on vacuum packaging comprises a vacuum packaging machine (100), a discharging device (200) and a packaging bag (300), wherein the vacuum packaging machine (100) is provided with a plurality of vacuum chambers (101) for vacuum and heat sealing of the packaging bag (300), and the discharging device (200) is provided with a clamp (201) and a first conveyor belt (202) for clamping and pulling out the vacuum chambers (101) which are subjected to vacuum and heat sealing;
characterized by further comprising:
the air leakage indicator (1) is fixed in the packaging bag (300) before vacuum packaging, the air leakage indicator (1) comprises a cylinder (12) and a cylinder body (11) which are elastically connected with each other, the air leakage indicator (1) has a normal state and a shortened state, and the packaging bag (300) after vacuum packaging enables the air leakage indicator (1) to be converted from the normal state to the shortened state; and
a vacuum detection assembly (2) for vacuum detecting the air leakage indicator (1).
2. Vacuum detection device based on vacuum packaging according to claim 1, characterized in that the closed end of the packaging bag (300) is partly semi-heat sealed with a heat sealing area (303), the packaging bag (300) is provided with heat sealing points (301) heat sealed in a broken line section, a ventilation gap (302) is formed between every two heat sealing points (301), and the heat sealing area (303) is kept in communication with other areas of the packaging bag (300) through the ventilation gap (302).
3. Vacuum-packaging-based vacuum detection apparatus according to claim 2, characterized in that the air leakage indicator (1) further comprises: the cylinder body (11) is inwards provided with a sealing groove which is in clearance fit with the cylinder body (12) from an opening, at least one sealing ring (13) is embedded on the outer circumferential surface of the cylinder body (12), a limiting ring (14) is fixed on the inner wall of the cylinder body (11) below the sealing groove, a spring (15) is fixed at the inner bottom end of the cylinder body (11), and the spring (15) is fixed with the lower end of the cylinder body (12).
4. A vacuum detection device based on vacuum packaging according to claim 3, characterized in that the cylinder (12) is internally provided with an air outlet hole (16), and the air outlet hole (16) is internally provided with a hole plug (17) in an interference fit manner.
5. The vacuum detection device based on vacuum packaging according to claim 4, wherein the vacuum detection assembly (2) comprises a frame (21), a second conveyor belt (22) is installed in the frame (21), a mounting plate (24) is fixed at the upper end of the frame (21), a second telescopic member is fixed on the side surface of the mounting plate (24), a pushing plate (25) is fixed at the telescopic end of the second telescopic member, a pushing groove (23) for accommodating the pushing plate (25) and pushing out the packaging bag (300) is formed in the frame (21), and a guide plate (28) is fixed on the other side of the frame (21) opposite to the second telescopic member and below the pushing groove (23).
6. The vacuum detection device based on vacuum packaging according to claim 5, wherein a first telescopic member is fixedly arranged at the upper end of the mounting plate (24), a detection plate (26) is connected to the telescopic end of the first telescopic member through a pressure sensor, a distance sensor (27) is fixedly arranged at the upper end of the detection plate (26), and a controller is connected to the pressure sensor and the distance sensor (27).
7. Vacuum inspection device based on vacuum packaging according to claim 5, characterized in that the outer circumferential surface of the cylinder (12) is coated with a colour that differs from the external environment;
the vacuum detection assembly (2) further comprises a color recognition sensor fixedly arranged on the inner side surface of the mounting plate (24), and the color recognition sensor is connected with a controller.
8. A method of testing a vacuum testing device based on vacuum packaging as recited in claim 6, comprising the steps of:
the vacuum detection assembly (2) is connected and arranged on one side of the discharging equipment (200), the vacuum heat-sealed packaging bag (300) is connected and conveyed to the corresponding position of the vacuum detection assembly (2), the telescopic piece is downwards pushed out of the detection plate (26) and pushes down the air leakage indicator (1) to monitor pressure signals in real time, meanwhile, the distance sensor (27) monitors distance signals from the detection plate to the inner top end of the mounting plate (24) in real time and converts the distance signals into electric signals to be sent to the controller respectively, if the pressure is kept constant, the distance is unchanged, the air leakage is qualified, if the pressure is gradually increased, the air leakage is unqualified, the telescopic piece is pushed out of the pushing plate (25), the packaging bag (300) is pushed away from the second conveyor belt (22) through the pushing groove (23), and the second conveyor belt (22) continues to convey.
9. A method of testing a vacuum testing device based on vacuum packaging as claimed in claim 7, characterized by presetting the colour characteristics of the column (12);
the vacuum detection assembly (2) is connected and arranged on one side of the discharging equipment (200), the vacuum heat-sealed packaging bag (300) is connected and conveyed on the vacuum detection assembly (2), the color recognition sensor monitors the air leakage indicator (1) in real time, if the preset color feature is not recognized, the vacuum detection assembly (2) continues to be conveyed, if the preset color feature is recognized, the conveying belt II (22) conveys the packaging bag (300) to the corresponding position of the vacuum detection assembly (2) and then stops conveying, the expansion piece II pushes out the pushing plate (25) to push the packaging bag (300) away from the conveying belt II (22) through the pushing groove (23), and then the conveying belt II (22) continues conveying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311678347.7A CN117367683B (en) | 2023-12-08 | 2023-12-08 | Vacuum detection device based on vacuum packaging and detection method thereof |
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| CN202311678347.7A CN117367683B (en) | 2023-12-08 | 2023-12-08 | Vacuum detection device based on vacuum packaging and detection method thereof |
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| CN117367683B CN117367683B (en) | 2024-02-06 |
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