Sealing detection device for food package
By designing an automated food packaging sealing detection device, the horizontal and vertical moving mechanisms and clamping mechanisms are used to realize automated sealing detection of packaging bags, which solves the problem of low detection efficiency in the existing technology, improves the detection efficiency and protects the integrity of the packaging bags.
Patent Information
- Application Number
- CN202510656173.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-21
- Publication Date
- 2025-09-19
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing food packaging seal detection devices lack automated integrated design, resulting in low detection efficiency and making it difficult to meet the high-efficiency detection needs of modern production lines.
A sealing detection device consisting of a horizontal and vertical moving mechanism, a clamping mechanism and a transparent water tank was designed. The packaging bags were grabbed from the belt conveyor by the clamping mechanism and placed in the transparent water tank to form a sealed cavity. A pressure pump was used to create a vacuum for sealing detection, and the packaging bags were automatically sorted according to the results.
It realizes the automatic sealing detection of food packaging bags, improves the detection efficiency, reduces manual intervention, and ensures that the packaging bags are not damaged during the detection process.
Smart Images
Figure CN120662544A_ABST
Abstract
Description
Technical Field
[0001] The present invention mainly relates to the technical field of sealing detection, and in particular to a sealing detection device for food packaging. Background Art
[0002] In the food packaging industry, the seal integrity of packaging bags is a core indicator for ensuring product shelf life and food safety. The currently widely used seal testing method in the industry is based on the principle of negative pressure water immersion: the package to be tested is placed in a transparent observation container, which is then immersed in water using a mechanical pressure block. The container is then sealed and a vacuum pump is activated to evacuate the air. Under the influence of negative pressure, if there is a slight leak in the package, the internal air will flow through the defect to form a continuous bubble; conversely, an intact package will expand evenly due to the internal and external pressure differential. While this method can intuitively determine seal quality, it has significant technical limitations.
[0003] Traditional inspection devices often utilize open-ended operation structures, requiring manual effort for bag positioning, briquetting, water injection control, and vacuum parameter adjustment. This results in inspection efficiency being directly tied to operator proficiency. Existing equipment generally lacks automated integrated design, requiring multiple manual interventions to connect various processes. A single inspection cycle can take as long as 3-5 minutes, making it difficult to meet the demands of modern production lines, which require dozens of pieces per minute. Summary of the Invention
[0004] 1. Technical problem to be solved by the invention: The present invention provides a sealing detection device for food packaging, which is used to solve the technical problems existing in the above-mentioned background technology.
[0005] 2. Technical solution: To achieve the above-mentioned purpose, the present invention provides a technical solution: a food packaging sealing detection device, comprising: A horizontal and vertical moving mechanism, wherein a sealing assembly is provided at the vertical moving end thereof, and a clamping mechanism is installed at the bottom of the sealing assembly; A first belt conveyor and a second belt conveyor are arranged in parallel in a horizontal direction, with an inspection station and a sorting station arranged between the two; The inspection station is provided with a transparent water tank with an opening at the top, the opening contour of which forms a detachable seal with the sealing component, and the transparent water tank is connected to a pressure pump through a pipeline; The sorting station is provided with a collection box with a top opening; The clamping mechanism is configured as follows: after grabbing the packaging bags from the first belt conveyor and placing them in a transparent water tank, the sealing assembly and the water tank form a sealed cavity, which is vacuumed by a pressure pump for sealing testing. After the test is completed, the packaging bags are classified and placed on the second belt conveyor or collection box according to the results.
[0006] Furthermore, the sealing assembly includes a limiting plate and a matching plate whose central symmetric planes coincide from top to bottom. An annular seal is circumferentially provided on the outer wall of the matching plate, and the outer diameter of the annular seal is larger than the inner diameter of the transparent water tank.
[0007] Furthermore, the clamping mechanism includes a first cylinder and a base plate coaxially arranged from top to bottom, the first cylinder is fixedly connected to the mounting plate at the bottom of the mating plate, the base plate is fixedly connected to two symmetrically distributed extension rods at the bottom of the mating plate, and the telescopic rod of the first cylinder is evenly hinged with multiple connecting rods in the circumferential direction, and the other end of each connecting rod is hinged to the first slider respectively, and the base plate is radially provided with sliding grooves corresponding to the number of the first sliders, and each first slider can be slidably embedded in the corresponding sliding groove, and a clamping claw assembly is provided at the bottom of each first slider.
[0008] Furthermore, a first motor is installed on the top of the limit plate, the output shaft of the first motor extends vertically to the bottom of the mating plate and is fixedly connected to the mounting plate, an annular groove is provided at the bottom of the mating plate, a second slider is slidably installed in the annular groove, and there are two second sliders which are respectively fixedly connected to two extension rods.
[0009] Furthermore, the clamping jaw assembly includes a vertical sleeve and an L-shaped rod, the top of the vertical sleeve is fixed to the bottom of the first slider and the side wall is provided with a first limiting hole, the vertical section of the L-shaped rod is slidably installed in the vertical sleeve and is provided with a second limiting hole arranged axially equidistantly, and the end of the horizontal section is facing the center of the base plate, and a pin rod is inserted into the first limiting hole and the selected second limiting hole.
[0010] Furthermore, a guiding slope is provided at the end of the horizontal section.
[0011] Furthermore, the horizontal and vertical moving mechanism includes a movable plate, a second cylinder is installed on the top of the movable plate, the telescopic end of the second cylinder extends vertically to the bottom of the movable plate and is fixedly connected to the top of the mating plate, and two symmetrically distributed vertical guide rods are also provided on the top of the mating plate, and the guide rods are slidably connected to the movable plate.
[0012] Furthermore, the horizontal and vertical moving mechanism also includes two horizontally symmetrical support plates, which are connected by a fixedly connected guide slide and a rotatably installed screw rod. The guide slide is slidably connected to the movable plate, and the screw rod is threadedly connected to the movable plate, and a second motor is assembled at one end.
[0013] Furthermore, evenly distributed triangular stabilizing plates are provided on the outer wall of the support plate near the bottom.
[0014] 3.Beneficial effects: The technical solution provided by the present invention has the following beneficial effects compared with the prior art: after the clamping mechanism cooperates with the horizontal and vertical moving mechanism, the packaging bags can be grabbed from the first belt conveyor and placed in the transparent water tank. The sealing assembly and the water tank form a sealed cavity, and a pressure pump is used to evacuate the cavity to perform a sealing test. After the test is completed, the packaging bags are classified and placed on the second belt conveyor or the collection box according to the test results, thereby realizing automated testing and improving testing efficiency. When all the L-shaped rods move inward synchronously, the horizontal section c can scoop up the packaging bag, and all the clamping claw components will form a birdcage shape to confine the packaging bag therein. Therefore, after the packaging bag expands in the transparent water tank, it can move inside it, thereby preventing the expansion of the packaging bag from being suppressed and causing damage to the bag. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the horizontal and vertical moving mechanism of the present invention; Figure 3 It is a schematic diagram of the movable plate connection structure of the present invention; Figure 4 It is a schematic structural diagram of the clamping mechanism of the present invention; Figure 5 This is a schematic structural diagram of the clamping jaw assembly of the present invention; Figure 6 It is a schematic structural diagram of the sealing component of the present invention.
[0016] Reference numerals: 1. Horizontal and vertical movement mechanism; 101. Movable plate; 102. Second cylinder; 103. Guide rod; 104. Support plate; 105. Guide rod; 106. Screw rod; 107. Second motor; 108. Triangular stabilizing plate; 2. Sealing assembly; 21. Limiting plate; 22. Matching plate; 221. Annular groove; 23. Annular seal; 3. Clamping mechanism; 31. First cylinder; 32. Base plate; 321. Slideway; 33. Connecting rod; 34 , first slider; 35, clamping jaw assembly; 351, vertical sleeve; 351a, first limiting hole; 352, L-shaped rod; 352a, vertical section; 352b, second limiting hole; 352c, horizontal section; 352d, inclined plane; 353, pin rod; 4, first belt conveyor; 5, second belt conveyor; 6, transparent water tank; 7, pressure pump; 8, collection box; 9, mounting plate; 10, extension rod; 11, first motor; 12, second slider. DETAILED DESCRIPTION
[0017] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.
[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.
[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.
[0020] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," "fixed," "provided with," and the like should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances. Example
[0021] Refer to the attached Figure 1-6 , a food packaging sealing detection device, comprising: A horizontal and vertical moving mechanism 1, a sealing assembly 2 is provided at its vertical moving end, and a clamping mechanism 3 is installed at the bottom of the sealing assembly 2; A first belt conveyor 4 and a second belt conveyor 5 are arranged in parallel in the horizontal direction, with an inspection station and a sorting station arranged between them; The inspection station is provided with a transparent water tank 6 with an opening at the top, the opening contour of which forms a detachable seal with the sealing assembly 2, and the transparent water tank 6 is connected to a pressure pump 7 through a pipeline; The sorting station is provided with a collection box 8 with a top opening; The clamping mechanism 3 is configured as follows: after grabbing the packaging bags from the first belt conveyor 4 and placing them in the transparent water tank 6, the sealing assembly 2 and the water tank form a sealed cavity, which is vacuumed by the pressure pump 7 for sealing detection. After the detection is completed, the packaging bags are classified and placed on the second belt conveyor 5 or the collection box 8 according to the results.
[0022] In this embodiment, the horizontal and vertical moving mechanism 1 drives the clamping mechanism 3 to move above the first belt conveyor 4, and then drives the clamping mechanism 3 to descend to clamp the packaging bag being transported. Similarly, the horizontal and vertical moving mechanism 1 drives the clamping mechanism 3 to place the packaging bag into the transparent water tank 6 and completely immerse it in water. At this time, the sealing component 2 and the water tank form a sealed cavity, and then the pressure pump 7 is used to evacuate the cavity for sealing detection. When bubbles are generated in the water, it means that the sealing is unqualified. In any case, if there are no bubbles, the sealing is qualified. Then, the horizontal and vertical moving mechanism 1 is used to place the qualified ones into the second belt conveyor 5 and transport them to the next workstation. The unqualified ones are placed in or collected in the collection box 8.
[0023] The sealing assembly 2 includes a limit plate 21 and a matching plate 22 whose central symmetric planes coincide from top to bottom. An annular seal 23 is circumferentially provided on the outer wall of the matching plate 22. The outer diameter of the annular seal 23 is larger than the inner diameter of the transparent water tank 6.
[0024] In this embodiment, the matching plate 22 cooperates with the annular seal 23 to achieve a sealed connection with the top opening of the transparent water tank 6, and the limiting plate 21 is used to abut against the top of the transparent water tank 6 to limit it.
[0025] The clamping mechanism 3 includes a first cylinder 31 and a base plate 32 coaxially arranged from top to bottom. The first cylinder 31 is fixedly connected to the mounting plate 9 at the bottom of the mating plate 22. The base plate 32 is fixedly connected to two symmetrically distributed extension rods 10 at the bottom of the mating plate 22. A plurality of connecting rods 33 are evenly hinged circumferentially on the telescopic rod of the first cylinder 31. The other end of each connecting rod 33 is hinged to the first slider 34 respectively. A sliding groove 321 corresponding to the number of the first sliders 34 is radially opened on the base plate 32. Each first slider 34 can be slidably embedded in the corresponding sliding groove 321. A clamping claw assembly 35 is provided at the bottom of each first slider 34.
[0026] In this embodiment, when the first cylinder 31 starts to retract, all the connecting rods 33 can slide in the slide groove 321 by pulling the corresponding first slider 34 through the hinged cooperation, and the sliding direction is the direction close to the base plate 32. All the clamping jaw assemblies 35 are closed inward to achieve the clamping action. Similarly, when the first cylinder 31 starts to extend, all the clamping jaw assemblies 35 are moved away from the outside to release the clamped packaging bag.
[0027] The first motor 11 is assembled on the top of the limiting plate 21, and the output shaft of the first motor 11 extends vertically to the bottom of the matching plate 22 and is fixedly connected to the mounting plate 9. An annular groove 221 is provided at the bottom of the matching plate 22, and a second slider 12 is slidably installed in the annular groove 221. There are two second sliders 12, which are fixedly connected to the two extension rods 10 respectively.
[0028] In this embodiment, after the first motor 11 is started, the mounting plate 9 fixedly connected to its output end rotates synchronously, and then cooperates with the sliding of the second slider 12 in the annular groove 221 to drive the entire clamping jaw assembly 35 to rotate synchronously through the extension rod 10, so as to shake off the water on the packaging bag through centrifugal force, and this process is carried out when the packaging bag is completely floated to the surface and in the transparent water tank 6.
[0029] The clamping jaw assembly 35 includes a vertical sleeve 351 and an L-shaped rod 352. The top of the vertical sleeve 351 is fixed to the bottom of the first slider 34 and the side wall is provided with a first limiting hole 351a. The vertical section 352a of the L-shaped rod 352 is slidably installed in the vertical sleeve 351 and is provided with second limiting holes 352b arranged axially equidistantly. The end of the horizontal section 352c is facing the center of the base plate 32. The first limiting hole 351a and the selected second limiting hole 352b are jointly inserted with a pin rod 353.
[0030] In this embodiment, when all the L-shaped rods 352 approach the inside synchronously, the horizontal section 352c can scoop up the packaging bag, and all the clamping claw assemblies 35 will form a birdcage shape to limit the packaging bag therein, so that after the packaging bag expands in the transparent water tank 6, it can move inside it, thereby preventing the expansion of the packaging bag from being suppressed and causing damage to the bag.
[0031] In the above embodiment, a guiding slope 352d is provided at the end of the horizontal section 352c, which can play a guiding role and make it easier to scoop up the packaging bag.
[0032] The horizontal and vertical movement mechanism 1 includes a movable plate 101, a second cylinder 102 is mounted on the top of the movable plate 101, the telescopic end of the second cylinder 102 vertically extends to the bottom of the movable plate 101 and is fixedly connected to the top of the matching plate 22, and two symmetrically distributed vertical guide rods 103 are also provided on the top of the matching plate 22, and the guide rods 103 are slidably connected to the movable plate 101; The horizontal and vertical moving mechanism 1 also includes two horizontally symmetrical support plates 104, which are connected by a fixedly connected guide rod 105 and a rotatably installed screw rod 106. The guide rod 105 is slidably connected to the movable plate 101, and the screw rod 106 is threadedly connected to the movable plate 101, and a second motor 107 is assembled at one end.
[0033] In this embodiment, after the second cylinder 102 is activated, it can drive the sealing assembly 2 to rise and fall, and cooperate with the sliding connection between the two symmetrically distributed vertical guide rods 103 and the movable plate 101 to make the lifting of the sealing assembly 2 more stable; After the second motor 107 is started, the screw rod 106 rotates synchronously, and cooperates with the threaded connection between the screw rod 106 and the movable plate 101 to drive the movable plate 101 to slide on the guide rod 105, thereby achieving horizontal displacement.
[0034] In the above embodiment, evenly distributed triangular stabilizing plates 108 are provided on the outer wall of the support plate 104 near the bottom to improve the stability of the support plate 104 .
[0035] The above-mentioned embodiments only express a certain implementation method of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent of the present invention shall be based on the attached claims.
[0036] It should be noted that the above content belongs to the technical knowledge scope of the inventor. Since the technical content in this field is vast and too complicated, the above content of this application does not necessarily constitute prior art.
Claims
1. A food packaging sealing detection device, characterized in that: include: A horizontal and vertical moving mechanism (1), wherein a sealing assembly (2) is provided at the vertical moving end thereof, and a clamping mechanism (3) is installed at the bottom of the sealing assembly (2); A first belt conveyor (4) and a second belt conveyor (5) are arranged in parallel in a horizontal direction, with an inspection station and a sorting station arranged between the two; The inspection station is provided with a transparent water tank (6) with a top opening, the opening profile of which forms a detachable seal with the sealing component (2), and the transparent water tank (6) is connected to a pressure pump (7) via a pipeline; The sorting station is provided with a collection box (8) with a top opening; The clamping mechanism (3) is configured as follows: after grabbing the packaging bags from the first belt conveyor (4) and placing them in the transparent water tank (6), the sealing assembly (2) and the water tank form a sealed cavity, vacuuming the cavity through a pressure pump (7) to perform a sealing test, and after the test is completed, the packaging bags are classified and placed on the second belt conveyor (5) or the collection box (8) according to the test results.
2. The food packaging seal detection device according to claim 1, characterized in that: The sealing assembly (2) comprises a limit plate (21) and a matching plate (22) whose central symmetric planes overlap from top to bottom. An annular sealing member (23) is circumferentially provided on the outer wall of the matching plate (22). The outer diameter of the annular sealing member (23) is larger than the inner diameter of the transparent water tank (6).
3. The food packaging seal detection device according to claim 2, characterized in that: The clamping mechanism (3) includes a first cylinder (31) and a base plate (32) coaxially arranged from top to bottom, the first cylinder (31) is fixedly connected to the mounting plate (9) at the bottom of the matching plate (22), the base plate (32) is fixedly connected to two symmetrically distributed extension rods (10) at the bottom of the matching plate (22), a plurality of connecting rods (33) are evenly hinged circumferentially on the telescopic rod of the first cylinder (31), the other end of each connecting rod (33) is hinged to the first slider (34), and a sliding groove (321) corresponding to the number of the first sliders (34) is radially opened on the base plate (32), and each first slider (34) can be slidably embedded in the corresponding sliding groove (321), and a clamping claw assembly (35) is provided at the bottom of each first slider (34).
4. The food packaging seal detection device according to claim 3, characterized in that: A first motor (11) is mounted on the top of the limiting plate (21), an output shaft of the first motor (11) vertically extends to the bottom of the matching plate (22) and is fixedly connected to the mounting plate (9), an annular groove (221) is provided at the bottom of the matching plate (22), a second slider (12) is slidably mounted in the annular groove (221), and two second sliders (12) are fixedly connected to the two extension rods (10) respectively.
5. The food packaging seal detection device according to claim 3, characterized in that: The clamping jaw assembly (35) includes a vertical sleeve (351) and an L-shaped rod (352), wherein the top of the vertical sleeve (351) is fixed to the bottom of the first slider (34) and the side wall is provided with a first limiting hole (351a), the vertical section (352a) of the L-shaped rod (352) is slidably installed in the vertical sleeve (351) and is provided with second limiting holes (352b) arranged axially equidistantly, and the end of the horizontal section (352c) faces the center of the base plate (32), and a pin rod (353) is inserted into both the first limiting hole (351a) and the selected second limiting hole (352b).
6. The food packaging seal detection device according to claim 5, characterized in that: A guiding inclined surface (352d) is provided at the end of the horizontal section (352c).
7. The food packaging seal detection device according to claim 3, characterized in that: The horizontal and vertical moving mechanism (1) includes a movable plate (101), a second cylinder (102) is mounted on the top of the movable plate (101), a telescopic end of the second cylinder (102) vertically extends to the bottom of the movable plate (101) and is fixedly connected to the top of the matching plate (22), and two symmetrically distributed vertical guide rods (103) are also provided on the top of the matching plate (22), and the guide rods (103) are slidably connected to the movable plate (101).
8. The food packaging seal detection device according to claim 7, characterized in that: The horizontal and vertical moving mechanism (1) further comprises two horizontally symmetrical support plates (104), the two support plates (104) being connected via a fixedly connected guide slide rod (105) and a rotatably mounted screw rod (106), the guide slide rod (105) being slidably connected to the movable plate (101), the screw rod (106) being threadedly connected to the movable plate (101), and a second motor (107) being mounted on one end thereof.
9. The food packaging seal detection device according to claim 8, characterized in that: The outer wall of the support plate (104) near the bottom is provided with evenly distributed triangular stabilizing plates (108).