Screening machine with air leakage detection function for food packaging

Abstract

The utility model discloses a food packaging screening machine with an air leakage detection function, and relates to the technical field of food packaging equipment, the food packaging screening machine comprises a workbench, and an installation frame is installed at the position, close to the left side, of the top of the workbench. According to the food packaging screening machine with the air leakage detection function, when a packaging bag is conveyed to the position below the second belt conveyor to make contact with the second belt conveyor, if air leaks, air in the packaging bag is extruded out, the thickness is reduced, the packaging bag can penetrate through the gap between the transmission belt and the first belt conveyor, and air leakage packaging bag screening is completed; the second belt conveyor can recover the expansion state and cannot penetrate through the gap, the second belt conveyor drives the two transmission rollers to rotate during operation, the transmission belt operates, qualified packaging bags are guided to the finished product discharging guide plate to slide off, screening of the qualified packaging bags is completed, and the problem that the packaging bags can be detected and screened only after conveying is stopped is solved in the process. And the production continuity and the detection efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of food packaging equipment, in particular to a food packaging screening machine with air leakage detection function. Background Art

[0002] In the food packaging industry, packaging integrity is crucial to food quality and shelf life. Currently, food packaging is typically packaged in various containers, such as bags and boxes. However, during the production process, due to problems with packaging material quality, packaging equipment failure, or improper operation, some packages may leak. Leaking packaging cannot effectively protect the food, leaving it exposed to air and susceptible to contamination and deterioration, thus affecting food safety and quality.

[0003] Prior art, such as Chinese Patent No. CN215844294U, discloses a screening device for puffed food packaging. The device comprises a workbench with mounting plates fixed to the sidewalls of each side of the workbench. A transmission mechanism for conveying the puffed food is mounted on both mounting plates. The transmission mechanism comprises a motor fixed to one of the mounting plates, a driving wheel fixed to the end of the motor's output shaft, a driven wheel rotatably mounted between the two mounting plates, and a conveyor belt connecting the driving and driven wheels. The driving wheel's end, distal from the motor, is rotatably connected to the other mounting plate. A fixing plate is mounted on the upper surface of both mounting plates. A first cylinder is fixed to the upper surface of the fixing plate, and the piston rod of the first cylinder extends through the fixing plate and is slidably connected thereto. This device reduces the time it takes for a detection device to detect whether the puffed food is leaking, thereby improving production efficiency.

[0004] In the above patent, although the device can detect whether food packaging is leaking, when the extrusion plate of the existing device moves downward and the packaging bag is squeezed for detection, the packaging bag needs to stop being transported to cooperate with the leakage detection. The frequent pauses caused by the detection seriously affect the continuity of the entire production, thereby reducing the production efficiency and detection efficiency. For this reason, the utility model provides a screening machine for food packaging with leakage detection. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides a food packaging screening machine with air leakage detection, which solves the problem that the packaging bags need to stop being transported to cooperate with air leakage detection. Frequent pauses caused by detection seriously affect the continuity of the entire production, thereby reducing production efficiency and detection efficiency.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a screening machine for food packaging with air leakage detection, comprising a workbench, a mounting bracket is installed at a position near the left side of the top of the workbench, a fixed bracket is installed at a position near the right side of the top of the workbench, and the fixed bracket is arranged at an angle, and a detection and screening mechanism is provided on the workbench, and the detection and screening mechanism comprises: a conveying assembly, which is arranged on the top of the workbench; an extrusion assembly, which is arranged on the inner side of the mounting bracket, the extrusion assembly comprises a first cylinder installed on the top of the mounting bracket, a lifting plate is installed at the telescopic end of the first cylinder, and springs are fixedly installed on the bottom of the lifting plate near the four corners, and a second belt conveyor is installed between the bottom ends of the four springs; a screening assembly, which is arranged on the inner side of the fixed bracket, the screening assembly comprises a second cylinder, a connecting plate is installed at the telescopic end of the second cylinder, and a transmission roller is symmetrically rotated on the bottom surface of the connecting plate, and a transmission belt is provided for transmission between the two transmission rollers.

[0007] Preferably, the conveying assembly includes a first belt conveyor installed on the top of the workbench, a finished product unloading guide plate is installed on one side of the first belt conveyor, and a first bevel gear is installed on the end of one of the drive shafts of the first belt conveyor.

[0008] Preferably, guide rods are symmetrically mounted on the top of the lifting plate, the guide rods slide through the inner top of the mounting frame and extend upward, and the top end of the spring is fixedly connected to the bottom surface of the lifting plate.

[0009] Preferably, limit rods are fixedly installed at the top of the second belt conveyor near the four corners, and the limit rods slide through the bottom surface of the lifting plate and extend upward.

[0010] Preferably, the second cylinder is installed on the top of the fixing frame, and the telescopic end of the second cylinder movably passes through the top of the fixing frame and extends downward. The top of the connecting plate is symmetrically installed with a guide rod, and the guide rod slides through the inner top of the fixing frame and extends upward.

[0011] Preferably, a sliding hole is provided at the bottom end of each of the two transmission rollers, a cross rod is slidably provided inside the sliding hole, the bottom of the cross rod is fixedly connected to a connecting shaft, and the connecting shaft is rotatably installed on the top of the workbench, and a second bevel gear is fixedly sleeved on the outer wall of one of the connecting shafts, and the second bevel gear is meshed and connected with the first bevel gear.

[0012] Beneficial effects

[0013] The utility model provides a food packaging screening machine with air leakage detection. Compared with the existing technology, it has the following advantages:

[0014] (1) The food packaging screening machine with air leakage detection, when the packaging bag is transported to the bottom of the second belt conveyor and contacts it, if there is air leakage, the air inside the packaging bag will be squeezed out, the thickness will be thinner and can pass through the gap between the transmission belt and the first belt conveyor, completing the screening of the leaking packaging bag. When the packaging bag without air leakage is transported to the left side of the second belt conveyor, it will return to its expanded state and cannot pass through the gap. When the second belt conveyor is running, it drives the two transmission rollers to rotate, so that the transmission belt runs and guides the qualified packaging bag to slide onto the finished product unloading guide plate, completing the screening of the qualified packaging bag. This process solves the problem that the packaging bag needs to stop being transported before it can be detected and screened, thereby improving production continuity and detection efficiency.

[0015] (2) The food packaging screening machine with air leakage detection can drive the lifting plate to rise or fall by starting the first cylinder, thereby adjusting the height of the second belt conveyor. The second cylinder can drive the connecting plate to rise or fall, thereby adjusting the height of the transmission belt. The two cylinders cooperate with each other to facilitate air leakage detection of expanded packaging bags of different heights, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional appearance of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional appearance of the conveying component of the present invention;

[0018] Figure 3 This is a schematic diagram of the three-dimensional appearance of the extrusion component of the present invention;

[0019] Figure 4 This is a schematic diagram of the three-dimensional appearance of the screening component of the present invention.

[0020] In the figure: 1. Workbench; 11. Mounting frame; 12. Fixed frame; 2. Conveying assembly; 21. First belt conveyor; 22. Finished product unloading guide plate; 23. First bevel gear; 3. Extrusion assembly; 31. First cylinder; 32. Lifting plate; 33. Guide rod; 34. Spring; 35. Second belt conveyor; 36. Limit rod; 4. Screening assembly; 41. Second cylinder; 42. Connecting plate; 43. Guide rod; 44. Drive roller; 45. Slide hole; 46. Drive belt; 47. Cross rod; 48. Connecting shaft; 49. Second bevel gear. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] This utility model provides two technical solutions:

[0023] Figures 1-4 The first embodiment is shown: a screening machine for food packaging with air leakage detection, comprising a workbench 1, a mounting frame 11 is installed on the top of the workbench 1 near the left side, a fixed frame 12 is installed on the top of the workbench 1 near the right side, and the fixed frame 12 is inclined. A detection and screening mechanism is provided on the workbench 1, and the detection and screening mechanism comprises: a conveying component 2, which is arranged on the top of the workbench 1; an extrusion component 3, which is arranged on the inner side of the mounting frame 11, the extrusion component 3 comprises a first cylinder 31 mounted on the top of the mounting frame 11, a lifting plate 32 is installed at the telescopic end of the first cylinder 31, springs 34 are fixedly installed at the bottom of the lifting plate 32 near the four corners, and a second belt conveyor 35 is installed between the bottom ends of the four springs 34; a screening component 4, which is arranged on the inner side of the fixed frame 12, the screening component 4 comprises a second cylinder 41, a connecting plate 42 is installed at the telescopic end of the second cylinder 41, a transmission roller 44 is symmetrically rotated on the bottom surface of the connecting plate 42, and a transmission belt 46 is provided between the two transmission rollers 44.

[0024] The conveying assembly 2 includes a first belt conveyor 21 installed on the top of the workbench 1, a finished product unloading guide plate 22 is installed on one side of the first belt conveyor 21, and a first bevel gear 23 is installed at the end of one of the drive shafts of the first belt conveyor 21. The first belt conveyor 21 can transport items on the top of the workbench 1, and the finished product unloading guide plate 22 facilitates the output of finished products.

[0025] A guide rod 33 is symmetrically installed on the top of the lifting plate 32. The guide rod 33 slides through the inner top of the mounting frame 11 and extends upward. The top of the spring 34 is fixedly connected to the bottom surface of the lifting plate 32. The guide rod 33 can slide up and down in the mounting frame 11, making the lifting process of the lifting plate 32 more stable. The spring 34 is connected to the bottom surface of the lifting plate 32, which can play a buffering role when the second belt conveyor 35 squeezes the packaging bag.

[0026] Limit rods 36 are fixedly installed on the top of the second belt conveyor 35 near the four corners. The limit rods 36 slide through the bottom surface of the lifting plate 32 and extend upward. The four limit rods 36 on the second belt conveyor 35 limit and guide the lifting and lowering of the second belt conveyor 35, making the second belt conveyor 35 more stable and accurate during the lifting process.

[0027] Figures 1-4 The second embodiment is shown. Its main differences from the first embodiment are: a second cylinder 41 is mounted on top of the mounting frame 12, and its telescopic end flexibly penetrates the top of the mounting frame 12 and extends downward. Guide rods 43 are symmetrically mounted on the top of the connecting plate 42. These guide rods 43 slide along the inner top of the mounting frame 12 and extend upward, allowing the second cylinder 41 to move the connecting plate 42 up and down. The guide rods 43 on the connecting plate 42 slide within the mounting frame 12, providing greater stability during movement.

[0028] The bottom ends of the two transmission rollers 44 are each provided with a sliding hole 45, and a cross rod 47 is slidably provided inside the sliding hole 45. The bottom of the cross rod 47 is fixedly connected to a connecting shaft 48, and the connecting shaft 48 is rotatably installed on the top of the workbench 1. The outer wall of one of the connecting shafts 48 is fixedly sleeved with a second bevel gear 49, and the second bevel gear 49 is meshed with the first bevel gear 23. The sliding hole 45 on the transmission roller 44 cooperates with the cross rod 47, so that when the height of the transmission belt 46 is adjusted, the transmission roller 44 and the cross rod 47 can slide with each other, and can effectively transmit power to improve stability.

[0029] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0030] During operation, the expanded food packaging bag to be tested is placed on the first belt conveyor 21, and the first belt conveyor 21 transports the packaging bag downstream. At the same time, the second belt conveyor 35 is operated so that its running direction is opposite to that of the first belt conveyor 21. When the packaging bag is transported to the bottom of the second belt conveyor 35, the second belt conveyor 35 contacts the packaging bag. If the packaging bag leaks, the second belt conveyor 35 will squeeze out the air inside the packaging bag. Accordingly, the thickness of the packaging bag will also become thinner. The thickness of the leaking packaging bag is smaller than the gap between the transmission belt 46 and the first belt conveyor 21. The packaging bag passes directly from the bottom of the transmission belt 46 and is transported downstream, thereby completing the leakage detection. The packaging bags are screened, and when the packaging bags without air leakage are transported to the left side of the second belt conveyor 35, the packaging bags will return to their original expanded state and will not be able to pass through the gap between the transmission belt 46 and the first belt conveyor 21. When the second belt conveyor 35 is in operation, the first bevel gear 23 will follow the synchronous rotation, thereby rotating the second bevel gear 49, and cooperating with the two transmission rollers 44 to enable the transmission belt 46 to operate, guiding the packaging bags without air leakage to the finished product unloading guide plate 22 and sliding down, thereby completing the screening of qualified packaging bags. During the detection and screening process, the problem of stopping the transportation of packaging bags for air leakage detection and screening is effectively solved, thereby improving the continuity of production and detection efficiency.

[0031] By starting the first cylinder 31, the lifting plate 32 can be driven to rise or fall, thereby adjusting the height of the second belt conveyor 35. By starting the second cylinder 41, the connecting plate 42 can be driven to rise or fall, thereby adjusting the height of the transmission belt 46. These work together to facilitate leakage detection of inflatable packaging bags at different heights, thereby improving the practicality of the device.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A food packaging screening machine with air leakage detection, comprising a workbench (1), a mounting frame (11) being installed on the top of the workbench (1) near the left side, and a fixing frame (12) being installed on the top of the workbench (1) near the right side, and the fixing frame (12) being arranged in an inclined manner, characterized in that: The workbench (1) is provided with a detection and screening mechanism, which comprises: A conveying assembly (2) is arranged on the top of the workbench (1); An extrusion assembly (3) is arranged on the inner side of the mounting frame (11), and the extrusion assembly (3) includes a first cylinder (31) mounted on the top of the mounting frame (11), a lifting plate (32) is mounted on the telescopic end of the first cylinder (31), springs (34) are fixedly mounted on the bottom of the lifting plate (32) near the four corners, and a second belt conveyor (35) is mounted between the bottom ends of the four springs (34); A screening assembly (4) is arranged on the inner side of a fixed frame (12), and the screening assembly (4) includes a second cylinder (41). A connecting plate (42) is installed at the telescopic end of the second cylinder (41). A transmission roller (44) is symmetrically rotated on the bottom surface of the connecting plate (42), and a transmission belt (46) is provided between the two transmission rollers (44).

2. A food packaging screening machine with air leakage detection according to claim 1, characterized in that: The conveying assembly (2) comprises a first belt conveyor (21) mounted on the top of the workbench (1), a finished product unloading guide plate (22) being mounted on one side of the first belt conveyor (21), and a first bevel gear (23) being mounted on one end of a drive shaft of the first belt conveyor (21).

3. The food packaging screening machine with air leakage detection according to claim 1, characterized in that: A guide rod (33) is symmetrically mounted on the top of the lifting plate (32). The guide rod (33) slides through the inner top of the mounting frame (11) and extends upward. The top of the spring (34) is fixedly connected to the bottom surface of the lifting plate (32).

4. The food packaging screening machine with air leakage detection according to claim 1, characterized in that: Limiting rods (36) are fixedly installed at positions near the four corners of the top of the second belt conveyor (35), and the limiting rods (36) slide through the bottom surface of the lifting plate (32) and extend upward.

5. The food packaging screening machine with air leakage detection according to claim 1, characterized in that: The second cylinder (41) is installed on the top of the fixing frame (12), and the telescopic end of the second cylinder (41) movably passes through the top of the fixing frame (12) and extends downward. The top of the connecting plate (42) is symmetrically installed with a guide rod (43), and the guide rod (43) slides through the inner top of the fixing frame (12) and extends upward.

6. The food packaging screening machine with air leakage detection according to claim 2, characterized in that: The bottom ends of the two transmission rollers (44) are each provided with a sliding hole (45), a cross rod (47) is slidably provided inside the sliding hole (45), the bottom of the cross rod (47) is fixedly connected with a connecting shaft (48), and the connecting shaft (48) is rotatably mounted on the top of the workbench (1), and a second bevel gear (49) is fixedly sleeved on the outer wall of one of the connecting shafts (48), and the second bevel gear (49) is meshed and connected with the first bevel gear (23).

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