Manufacturing and processing method of plastic packaging bag

Abstract

The invention provides a manufacturing and processing method of a plastic packaging bag, which comprises the following steps: S1, mixing a main material and an additive according to a certain proportion, S2, putting the mixed raw materials into an extruder, heating and melting, extruding from a die head to form a thin tube, introducing compressed air to blow the thin tube into film bubbles, and cooling the formed film by a cooling device. The invention provides a manufacturing and processing method of a plastic packaging bag, which comprises the following steps: after a bag cutting machine performs hot cutting or cold cutting, edge sealing and the like on a rolled film, in the process of conveying through a conveying device, an industrial camera is matched with a light source, a product image is acquired, and the appearance of the packaging bag is detected; meanwhile, the positions, the thicknesses and the transparency of the products are detected through infrared rays or lasers, so that the packaging bags on the conveying device are automatically detected, the detection efficiency is improved, and meanwhile, the outflow of unqualified products is reduced.

Description

Technical Field

[0001] The present invention relates to the field of packaging bag production, in particular to a method for manufacturing and processing plastic packaging bags. Background Art

[0002] Packaging bags are used to package various items, facilitating transportation and storage during the production and distribution process. They are widely used in daily life and industrial production. However, actual statistics show that 80% of used plastic bags are ultimately disposed of in landfills like general waste, with only 7% being recycled.

[0003] Currently, during the production process of plastic packaging bags, spot checks are performed manually on the plastic packaging bags on the production line. When problems are found during the spot checks, the same batch of products needs to be checked repeatedly, which reduces work efficiency and may miss other defects.

[0004] Therefore, it is necessary to provide a method for manufacturing and processing a plastic packaging bag to solve the above technical problems. Summary of the Invention

[0005] The present invention provides a method for manufacturing and processing a plastic packaging bag, which solves the problem that it is inconvenient to quickly detect the produced products.

[0006] In order to solve the above technical problems, the present invention provides a method for manufacturing and processing a plastic packaging bag, comprising the following steps:

[0007] S1: Mix the main ingredients and additives in a certain proportion;

[0008] S2: The mixed raw materials are put into the extruder, heated and melted, and then extruded from the die head into a thin tube. At the same time, compressed air is introduced to inflate the thin tube into a film bubble. The formed film is cooled by a cooling device;

[0009] S3: transporting one end of the cooled film into a printing device, and rolling it into a film roll after printing by the printing device;

[0010] S4: After the rolled film is hot-cut or cold-cut and edge-sealed by the bag cutting machine to form packaging bags of a certain size, it is transported to the packaging station through the conveying device;

[0011] S5: In the process of conveying through the conveying device, industrial cameras are used with light sources to capture product images and inspect the appearance of the packaging bags. At the same time, infrared or laser detection is used to detect the position, thickness, and transparency of the products.

[0012] S6: When defective products are detected, the telescopic device is automatically controlled to extend and drive the suction head to remove the unqualified packaging bags.

[0013] Preferably, an operating table is fixedly installed at one end of the conveying device, and a switching device is provided on the surface of the operating table. The switching device includes a moving device and a storage rack. The moving device is provided inside the operating table, and the storage rack is fixedly installed at the output end of the moving device. The moving device is used to move the storage rack.

[0014] Preferably, the moving device includes a moving groove and a moving block, the moving groove is opened inside the operating table, and the moving block is slidably connected to the inside of the moving groove.

[0015] Preferably, a clamping device is provided inside the storage rack, and the clamping device includes a groove, a moving wheel, an extension rod, an extension sleeve, a telescopic part, a rotating disk, two sliding rods, two splints and two connecting rods. The groove is opened inside the storage rack, the moving wheel is provided inside the groove, the extension rod is fixedly connected to the inside of the moving wheel, the extension sleeve is slidably connected to the surface of the extension rod, the telescopic part is fixedly installed on one end of the extension sleeve, one side of the rotating disk is fixedly installed on one end of the telescopic part, the two sliding rods are fixedly connected to the inside of the rotating disk, the two splints are respectively slidably connected to the surfaces of the two sliding rods, and one end of the two connecting rods is respectively rotatably connected to one end of the two splints.

[0016] Preferably, the bottoms of the two clamps and the surfaces of the two sliding rods are respectively sleeved with return springs.

[0017] Preferably, the telescopic member is an electric push rod, and both ends of the electric push rod are fixedly mounted on one end of the extension sleeve and one side of the rotating disk respectively.

[0018] Preferably, a guide device is provided inside the storage rack, and the guide device includes a guide groove and a guide block. The guide groove is opened inside the storage rack, and the guide block is slidably connected to the inside of the guide groove.

[0019] Preferably, a movable frame is fixedly mounted on one side of the guide block, and a driving motor is fixedly mounted on the top of the movable frame.

[0020] Preferably, two mounting grooves are provided inside the clamping plate, and a reset member is fixedly installed inside the two mounting grooves, and a pressure plate is fixedly installed at one end of the reset member.

[0021] Preferably, the reset member is a spring telescopic rod, and one end of the two reset members is fixedly mounted on the two ends of the bottom of the pressure plate respectively.

[0022] Compared with the related art, the manufacturing and processing method of a plastic packaging bag provided by the present invention has the following beneficial effects:

[0023] The present invention provides a method for producing and processing plastic packaging bags. After a rolled film is subjected to steps such as hot cutting or cold cutting and edge sealing by a bag cutting machine, the bag is conveyed through a conveying device. An industrial camera is used in combination with a light source to capture product images and inspect the appearance of the packaging bags. At the same time, infrared or laser detection is used to detect the position, thickness, and transparency of the products, thereby automatically inspecting the packaging bags on the conveying device. This increases inspection efficiency and reduces the outflow of unqualified products. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic structural diagram of a first embodiment of a method for manufacturing and processing a plastic packaging bag provided by the present invention;

[0025] Figure 2 for Figure 1 A schematic structural diagram of the switching device shown;

[0026] Figure 3 for Figure 2 An enlarged schematic diagram of part A is shown;

[0027] Figure 4 A schematic structural diagram of a second embodiment of a method for manufacturing and processing a plastic packaging bag provided by the present invention;

[0028] Figure 5 for Figure 4 An enlarged schematic diagram of part B is shown;

[0029] Figure 6 A schematic structural diagram of a third embodiment of a method for manufacturing and processing a plastic packaging bag provided by the present invention;

[0030] Figure 7 for Figure 6 An enlarged schematic diagram of part C is shown.

[0031] Numbers in the figure: 1, conveying device, 2, operating table, 3, switching device, 31, moving device, 311 moving groove, 312, moving block, 32, storage rack, 4, clamping device, 41, groove, 42, moving wheel, 43, extension rod, 44, extension sleeve, 45, telescopic member, 46, rotating disk, 47, sliding rod, 48, clamping plate, 49, connecting rod, 5, return spring, 6, pressure plate,

[0032] 7. Guide device, 71. Guide groove, 72. Guide block, 8. Moving frame, 9. Drive motor,

[0033] 10. Mounting slot, 11. Resetting piece. DETAILED DESCRIPTION

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0035] First embodiment

[0036] Please refer to Figure 1 、 Figure 2 and Figure 3 ,in, Figure 1 A schematic structural diagram of a first embodiment of a method for manufacturing and processing a plastic packaging bag provided by the present invention; Figure 2 for Figure 1 A schematic structural diagram of the switching device shown; Figure 3 for Figure 2 An enlarged schematic diagram of part A is shown; Figure 4 for Figure 2 A method for manufacturing a plastic packaging bag comprises the following steps:

[0037] S1: Mix the main ingredients and additives in a certain proportion;

[0038] S2: The mixed raw materials are put into the extruder, heated and melted, and then extruded from the die head into a thin tube. At the same time, compressed air is introduced to inflate the thin tube into a film bubble. The formed film is cooled by a cooling device;

[0039] S3: transporting one end of the cooled film into a printing device, and rolling it into a film roll after printing by the printing device;

[0040] S4: After the rolled film is hot-cut or cold-cut and edge-sealed by the bag cutting machine to form packaging bags of a certain size, it is transported to the packaging station through the conveying device;

[0041] S5: In the process of conveying through the conveying device, industrial cameras are used with light sources to capture product images and inspect the appearance of the packaging bags. At the same time, infrared or laser detection is used to detect the position, thickness, and transparency of the products.

[0042] S6: When defective products are detected, the telescopic device is automatically controlled to extend and drive the suction head to remove the unqualified packaging bags.

[0043] When using an industrial camera with a light source for inspection, the system detects color leakage, blurred text, and overprint errors (such as error requirements of ≤0.1mm) on plastic bags, compares them with standard images through an AI model, and automatically marks defective areas.

[0044] By deploying industrial computers and edge servers on-site, the collected raw data (such as image pixels and sensor electrical signals) is pre-processed (noise reduction and filtering) to reduce the amount of data transmitted to the cloud.

[0045] Based on deep learning (such as YOLO and Faster R-CNN) training models, product defects (scratches, bubbles, missing materials, etc.) are identified, such as overprint deviation detection in plastic bag printing.

[0046] The classifier is trained by historical quality data (such as sensor parameters of good / defective products) to determine in real time whether the product is qualified (such as dimensional tolerance analysis of injection molded parts). At the same time, an alarm device can be installed on the conveying device 1 to issue an alarm when multiple defective products appear in a short period of time.

[0047] An operating table 2 is fixedly installed at one end of the conveying device 1, and a switching device 3 is provided on the surface of the operating table 2. The switching device 3 includes a moving device 31 and a storage rack 32. The moving device 31 is arranged inside the operating table 2, and the storage rack 32 is fixedly installed at the output end of the moving device 31. The moving device 31 is used to move the storage rack 32.

[0048] The moving device 31 is a linear sliding module, which is used to drive the male storage rack 32 to move to one side after being started.

[0049] The moving device 31 includes a moving groove 311 and a moving block 312 . The moving groove 311 is opened inside the operating table 2 , and the moving block 312 is slidably connected to the inside of the moving groove 311 .

[0050] When the storage rack 32 is moved to one side, the moving block 312 is driven to move to one side inside the moving groove 311 , so that the two storage stations on the storage rack 32 are switched.

[0051] A clamping device 4 is provided inside the storage rack 32, and the clamping device 4 includes a groove 41, a moving wheel 42, an extension rod 43, an extension sleeve 44, a telescopic member 45, a rotating disk 46, two sliding rods 47, two splints 48 and two connecting rods 49. The groove 41 is opened inside the storage rack 32, the moving wheel 42 is provided inside the groove 41, the extension rod 43 is fixedly connected to the inside of the moving wheel 42, the extension sleeve 44 is slidably connected to the surface of the extension rod 43, the telescopic member 45 is fixedly installed on one end of the extension sleeve 44, one side of the rotating disk 46 is fixedly installed on one end of the telescopic member 45, the two sliding rods 47 are fixedly connected to the inside of the rotating disk 46, the two splints 48 are respectively slidably connected to the surfaces of the two sliding rods 47, and one end of the two connecting rods 49 is respectively rotatably connected to one end of the two splints 48.

[0052] The two storage stations on the storage rack 32 are both provided with a clamping device 4 for automatically clamping one end of the packaging bag.

[0053] The extension rod 43 is a rectangular rod, and the extension sleeve 44 is adapted to the extension rod 43 and is used to drive the extension rod 43 to rotate to one side when the moving wheel 42 rotates to one side.

[0054] The two ends of the connecting rod 49 are respectively rotatably connected to one end of the two splints 48, and the other end is respectively rotatably connected to the top and bottom of the extension sleeve 44, so that when the telescopic member 45 is extended, the extension sleeve 44 drives the two connecting rods 49 to move, and the two splints 48 merge toward the middle.

[0055] The bottoms of the two clamping plates 48 and the surfaces of the two sliding rods 47 are respectively sleeved with return springs 5 ​​.

[0056] The return spring 5 is used to push the clamping plate 48 to return to its original position.

[0057] The telescopic member 45 is an electric push rod, and both ends of the electric push rod are fixedly mounted on one end of the extension sleeve 44 and one side of the rotating disk 46 respectively.

[0058] The telescopic member 45 is a cylinder or a hydraulic rod, which is used to push the extension sleeve 44 to move.

[0059] The telescopic member 45 may also be a telescopic rod, in which case a worker needs to manually press the clamping plate 48 to clamp the packaging bag.

[0060] During use, after the conveying device 1 conveys the produced packaging bag to the storage rack 32 and places it between the two clamping plates 48 .

[0061] When a large number of packaging bags are piled up, the telescopic member 45 is activated to extend, thereby pushing the extension sleeve 44 to move to one side on the surface of the extension rod 43. When the extension sleeve 44 moves to one side, it drives one end of the two connecting rods 49 to move to one side and rotate to one side, thereby driving one end of the two splints 48 to move downward on the surfaces of the two sliding rods 47 respectively, while squeezing the two return springs 5.

[0062] After the two clamps 48 clamp the packaging bag, the extension rod 43 is rotated to one side, thereby driving the moving wheel 42 to rotate to one side, and moving to one side inside the groove 41, and at the same time driving the extension sleeve 44 connected to the telescopic part 45 to rotate to one side, causing the rotating disk 46 to rotate to one side, thereby driving the two clamps 48 to rotate to one side, and the packaging bag is rolled up.

[0063] When the packaging bag is rolled up, it can be pulled out from between the two clamping plates 48 by moving the packaging bag to one side.

[0064] After the moving wheel 42 is rotated to one side by rotating the extension rod 43 to reset the two clamping plates 48, the two clamping plates 48 can be reset by starting the telescopic member 45 to reset.

[0065] When another station on the storage rack 32 is full, the two storage stations on the storage rack 32 are switched by the moving device 32 .

[0066] The working principle of the manufacturing and processing method of a plastic packaging bag provided by the present invention is as follows:

[0067] When using, mix the main ingredients and additives in a certain proportion;

[0068] The mixed raw materials are put into the extruder, heated and melted, and then extruded from the die head into a thin tube. At the same time, compressed air is introduced to inflate the thin tube into a film bubble. The film is cooled by a cooling device.

[0069] One end of the cooled film is conveyed into the printing device, and is rolled into a film roll after being printed by the printing device;

[0070] After the rolled film is hot-cut or cold-cut and edge-sealed by the bag cutting machine to form packaging bags of a certain size, it is transported to the packaging station through the conveying device;

[0071] At the same time, in the process of conveying through the conveying device, industrial cameras are used with light sources to capture product images and inspect the appearance of the packaging bags. At the same time, infrared or laser detection is used to detect the position, thickness and transparency of the products.

[0072] When defective products are detected, the telescopic device is automatically controlled to extend and drive the suction head to remove the unqualified packaging bags.

[0073] Compared with the related art, the manufacturing and processing method of a plastic packaging bag provided by the present invention has the following beneficial effects:

[0074] The present invention provides a method for producing and processing plastic packaging bags. After a rolled film is subjected to steps such as hot cutting or cold cutting and edge sealing by a bag cutting machine, the bag is conveyed through a conveying device. An industrial camera is used in combination with a light source to capture product images and inspect the appearance of the packaging bags. At the same time, infrared or laser detection is used to detect the position, thickness, and transparency of the products, thereby automatically inspecting the packaging bags on the conveying device. This increases inspection efficiency and reduces the outflow of unqualified products.

[0075] Second embodiment

[0076] Please refer to Figure 4 and Figure 5Based on the method for manufacturing a plastic packaging bag provided in the first embodiment of this application, the second embodiment of this application provides another method for manufacturing a plastic packaging bag. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0077] Specifically, the difference of the method for making and processing a plastic packaging bag provided in the second embodiment of the present application is that, in a method for making and processing a plastic packaging bag, a guide device 7 is provided inside the storage rack 32, and the guide device 7 includes a guide groove 71 and a guide block 72, and the guide groove 71 is opened inside the storage rack 32, and the guide block 72 is slidably connected to the inside of the guide groove 71.

[0078] The guide block 72 is used to limit the movable frame 8 so that when the drive motor 9 is started and drives the extension rod 43 connected to the movable wheel 42 to rotate to one side, the drive motor 9 will not rotate and will move to one side along with the extension rod 43.

[0079] A moving frame 8 is fixedly mounted on one side of the guide block 72 , and a driving motor 9 is fixedly mounted on the top of the moving frame 8 .

[0080] The working principle of the manufacturing and processing method of a plastic packaging bag provided by the present invention is as follows:

[0081] During use, after starting the drive motor 9, the drive motor 9 drives the extension rod 43 connected to the moving wheel 42 to rotate to one side, so that when the extension rod 43 moves to one side, it drives the drive motor 9 connected to the moving frame 8 to move to one side, and when the moving frame 8 moves to one side, it drives the guide block 72 to move to one side inside the guide groove 71.

[0082] Compared with the related art, the manufacturing and processing method of a plastic packaging bag provided by the present invention has the following beneficial effects:

[0083] The present invention provides a method for manufacturing and processing plastic packaging bags. By cooperating with a movable frame 8 through a guide device 7, when a drive motor 9 is started and drives an extension rod 43 to rotate to one side, the drive motor 9 will move to one side along with the clamping device 4, thereby automatically reeling the packaging bag.

[0084] Third embodiment

[0085] Please refer to Figure 6 and Figure 7Based on the method for manufacturing a plastic packaging bag provided in the first embodiment of this application, the third embodiment of this application provides another method for manufacturing a plastic packaging bag. The third embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the third embodiment will not affect the independent implementation of the first embodiment.

[0086] Specifically, the difference of the method for manufacturing and processing a plastic packaging bag provided in the third embodiment of the present application is that, in a method for manufacturing and processing a plastic packaging bag, two mounting grooves 10 are opened inside the splint 48, and a reset member 11 is fixedly installed inside the two mounting grooves 10, and a pressure plate 6 is fixedly installed at one end of the reset member 11.

[0087] The resetting member 11 is used to push the two pressing plates 6 to move, thereby facilitating better clamping of packaging bags stacked in different thicknesses.

[0088] The reset member 11 is a spring telescopic rod, and one end of the two reset members 11 is fixedly mounted on the two ends of the bottom of the pressing plate 6 respectively.

[0089] The working principle of the manufacturing and processing method of a plastic packaging bag provided by the present invention is as follows:

[0090] During use, when the two clamping plates 48 are combined to clamp the stacked packaging bags, after the two pressing plates 6 come into contact with the surfaces of the packaging bags, the two clamping plates 48 continue to clamp, causing the multiple reset members 11 to shrink.

[0091] When the two clamping plates 48 move away from each other, the multiple reset members 11 push the two pressing plates 6 to move and reset.

[0092] Compared with the related art, the manufacturing and processing method of a plastic packaging bag provided by the present invention has the following beneficial effects:

[0093] The present invention provides a method for manufacturing and processing plastic packaging bags, wherein the resetting member 11 cooperates with the pressing plate 6 so that the clamping device 4 can better clamp the stacked packaging bags.

[0094] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention's description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for producing a plastic packaging bag, characterized in that: Including: the following step: S1: Mix the main ingredients and additives in a certain proportion; S2: The mixed raw materials are put into the extruder, heated and melted, and then extruded from the die head into a thin tube. At the same time, compressed air is introduced to inflate the thin tube into a film bubble. The formed film is cooled by a cooling device; S3: transporting one end of the cooled film into a printing device, and rolling it into a film roll after printing by the printing device; S4: After the rolled film is hot-cut or cold-cut and edge-sealed by the bag cutting machine to form packaging bags of a certain size, it is transported to the packaging station through the conveying device; S5: In the process of conveying through the conveying device, industrial cameras are used with light sources to capture product images and inspect the appearance of the packaging bags. At the same time, infrared or laser detection is used to detect the position, thickness, and transparency of the products. S6: When defective products are detected, the telescopic device is automatically controlled to extend and drive the suction head to remove the unqualified packaging bags.

2. The method for manufacturing a plastic packaging bag according to claim 1, characterized in that: An operating table is fixedly installed at one end of the conveying device, and a switching device is provided on the surface of the operating table. The switching device includes a moving device and a storage rack. The moving device is provided inside the operating table, and the storage rack is fixedly installed at the output end of the moving device. The moving device is used to move the storage rack.

3. The method for manufacturing a plastic packaging bag according to claim 2, characterized in that: The moving device includes a moving groove and a moving block. The moving groove is opened inside the operating table, and the moving block is slidably connected to the inside of the moving groove.

4. The method for manufacturing a plastic packaging bag according to claim 2, characterized in that: A clamping device is provided inside the storage rack, and the clamping device includes a groove, a moving wheel, an extension rod, an extension sleeve, a telescopic part, a rotating disk, two sliding rods, two splints and two connecting rods. The groove is opened inside the storage rack, the moving wheel is provided inside the groove, the extension rod is fixedly connected to the inside of the moving wheel, the extension sleeve is slidably connected to the surface of the extension rod, the telescopic part is fixedly installed on one end of the extension sleeve, one side of the rotating disk is fixedly installed on one end of the telescopic part, the two sliding rods are fixedly connected to the inside of the rotating disk, the two splints are respectively slidably connected to the surfaces of the two sliding rods, and one end of the two connecting rods is respectively rotatably connected to one end of the two splints.

5. The method for manufacturing a plastic packaging bag according to claim 4, characterized in that: The bottoms of the two clamping plates and the surfaces of the two sliding rods are respectively sleeved with reset springs.

6. The method for manufacturing a plastic packaging bag according to claim 4, characterized in that: The telescopic member is an electric push rod, and both ends of the electric push rod are fixedly mounted on one end of the extension sleeve and one side of the rotating disk respectively.

7. The method for manufacturing a plastic packaging bag according to claim 4, characterized in that: A guide device is provided inside the storage rack. The guide device includes a guide groove and a guide block. The guide groove is opened inside the storage rack, and the guide block is slidably connected to the inside of the guide groove.

8. The method for manufacturing a plastic packaging bag according to claim 7, characterized in that: A moving frame is fixedly mounted on one side of the guide block, and a driving motor is fixedly mounted on the top of the moving frame.

9. The method for manufacturing a plastic packaging bag according to claim 4, characterized in that: Two mounting grooves are provided in the interior of the clamping plate. A reset member is fixedly installed in the interior of the two mounting grooves. A pressing plate is fixedly installed at one end of the reset member.

10. The method for manufacturing a plastic packaging bag according to claim 9, characterized in that: The reset member is a spring telescopic rod, and one end of the two reset members is fixedly mounted on the two ends of the bottom of the pressing plate respectively.

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