A production device of a fresh vegetable and fruit packaging bag with a hand strap

Abstract

The utility model discloses a production equipment with hand pull fresh vegetable and fruit packaging bag, including the unwinding unit who carries out unwinding to fresh vegetable and fruit packaging bag paper sheet, the printing unit who carries out printing to the fresh vegetable and fruit packaging bag paper sheet unwound, the punching unit who carries out punching to the fresh vegetable and fruit packaging bag paper sheet after printing, the pre -cut unit who carries out pre -cut to the fresh vegetable and fruit packaging bag paper sheet after punching forms point broken knife mark tear line, synchronous link production forms hand pull hand pull unit, the hand pull sticking mechanism who carries out cutting to form single hand pull and stick on the fresh vegetable and fruit packaging bag paper sheet to the fresh vegetable and fruit packaging bag paper sheet after hand pull sticking, the bag -making unit who carries out bag -making forming to the fresh vegetable and fruit packaging bag after bag -making, the bag -collecting unit who carries out collection to the fresh vegetable and fruit packaging bag with hand pull after bag -making. The production equipment integrates each working procedure into the automation production technology of link, increases its production capacity promotion ability, has reduced single product production cost, has greatly shortened product production cycle.

Description

Technical Field

[0001] This utility model relates to the technical field of production equipment for packaging bags of fresh fruits and vegetables such as grapes, cherry tomatoes, and cucumbers, and in particular to a production equipment for packaging bags of fresh fruits and vegetables with handles that can automate production and reduce labor costs. Background Technology

[0002] Currently, after grapes, cherry tomatoes, cucumbers, and other fresh fruits and vegetables ripen, they are directly picked from the farms, placed in packaging bags, and then delivered directly to supermarkets for sale. This method of selling fresh fruits and vegetables directly to supermarkets after picking is the most common in Australia. The packaging bags for fresh fruits and vegetables are also called fresh fruit and vegetable packaging bags. These bags are basically made of paper. Perforations need to be punched in the bag to create ventilation holes, and handles need to be installed on the bag. The handles can be made by directly stamping to form a carrying hole or by attaching a handle.

[0003] Currently, the production process for fresh produce packaging bags with handles is more complex than that of other packaging bags. The production process involves first shaping the entire bag body, then manually transferring it to another machine for punching ventilation holes. Next, the handles are produced separately and then manually attached to the two inner sides of the bag. This completes the production of the fresh produce packaging bag. Furthermore, a special mold is used to die-cut excess paper and edges to remove waste and ensure the packaging bags are neat and meet the product's size requirements. However, the aforementioned production methods for fresh produce packaging bags require significant manual labor for punching and handling, as well as multiple handling and transfers of the products. In particular, the structure of attaching handles to the bag body is more difficult to produce than handles formed by direct punching, requiring custom molds and independent handle production to meet customer needs. This results in higher overall production costs, delivery difficulties, and inconsistent product quality due to manual punching and handle attachment, leading to a decline in product quality and a failure to maintain consistent product specifications and requirements. Finally, the production speed of all processes cannot be standardized, and an integrated automated production line cannot be established, making delivery a significant challenge when orders surge.

[0004] Currently, there is no automated production line capable of producing fresh produce packaging bags with handles, nor is there an automated production technology solution that integrates all production processes onto a single production line. Therefore, improvements are needed to existing equipment for producing fresh produce packaging bags with handles to reduce the production cost per unit and significantly shorten the production cycle. Summary of the Invention

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a production equipment for fresh fruit and vegetable packaging bags. This equipment includes an unwinding process for unwinding the packaging bag paper, a printing process for printing on the packaging bag paper, a punching process for punching holes in the packaging bag paper to form ventilation holes, a pre-cutting process for pre-cutting the packaging bag paper to form a tear line (easy-tear line), a simultaneous production line process for making the handle, and a cutting process to form individual bags. The process of attaching handles to the paper of fresh produce packaging bags includes the following steps: forming the paper tube, breaking the paper tube, removing waste paper, and bag forming; and collecting the bags after production. All these processes are automated in a continuous production line. The inline punching equipment eliminates the separate manual punching step found in existing technologies. Furthermore, the addition of pre-cutting, simultaneous handle production, inline attachment of the handles to the paper bag, paper breaking, and waste removal processes also eliminates the separate die-cutting and handle-making / attaching steps found in existing technologies. Based on this, the production equipment integrates these processes into a continuous automated production line, enhancing the overall production capacity. Even with low order demand for fresh produce packaging bags with handles, production can still be achieved, increasing capacity and allowing for more flexible order scheduling. This reduces the production cost per unit and significantly shortens the production cycle.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a production equipment for fresh fruit and vegetable packaging bags with handles, including an unwinding unit for unwinding fresh fruit and vegetable packaging bag paper sheets, a printing unit for printing on the unwound fresh fruit and vegetable packaging bag paper sheets, a punching unit for punching holes in the printed fresh fruit and vegetable packaging bag paper sheets, a pre-cutting unit for pre-cutting the punched fresh fruit and vegetable packaging bag paper sheets to form dotted tear lines, a handle unit for synchronously producing handles, a handle bonding mechanism for cutting the handles into individual handles and pasting them onto the fresh fruit and vegetable packaging bag paper sheets, a bag making unit for forming bags from the pasted fresh fruit and vegetable packaging bag paper sheets, and a bag collecting unit for collecting the bagged fresh fruit and vegetable packaging bags with handles.

[0007] Furthermore, the handle unit includes a handle unwinding frame for unwinding the handle rope, an upper handle sticker unwinding frame and a lower handle sticker unwinding frame for unwinding the upper and lower handle stickers respectively, a handle making machine, and a handle shaping mechanism installed on the handle making machine to pull and shape the input handle rope into a square wave shape, an upper glue spray nozzle located below the upper handle sticker conveying direction and spraying glue on its bottom surface, a lower glue spray nozzle located above the lower handle sticker conveying direction and spraying glue on its top surface, a handle pressure roller for clamping and pressing the upper and lower handle stickers to adhere and stick the handle rope, and a handle cutting knife located behind the handle pressure roller for longitudinally cutting the square wave handle rope and the upper and lower handle stickers in a two-part manner along the conveying direction after they are attached.

[0008] Furthermore, the bag-making unit includes a bag-making machine, a forming device mounted on the bag-making machine for positioning and forming fresh fruit and vegetable packaging paper sheets into fresh fruit and vegetable packaging paper tubes, a tearing and breaking roller for completely tearing and breaking each tear line of the grape bag paper tube to form individual fresh fruit and vegetable packaging paper sleeves, and a folding and pasting forming device for folding and pasting the bottom of the individual fresh fruit and vegetable packaging paper sleeves.

[0009] Furthermore, the bag-collecting unit includes a bag-collecting roller connected and installed to the bag-exit end of the bag-making unit, a movable gripper evenly installed on the circumference of the bag-collecting roller to clamp the bottom of the fresh fruit and vegetable packaging bag output from the bag-exit end of the bag-making unit, a bag-collecting worktable set corresponding to the output position of the bag-exit end of the bag-collecting roller, a fixed baffle fixedly installed on the bag-collecting worktable and close to the output position of the bag-exit end of the bag-collecting roller, a movable baffle movably installed on the bag-collecting worktable and forming a bag-collecting space with the fixed baffle, and a baffle driving cylinder installed on the bag-collecting worktable and driving the movable baffle to slide linearly.

[0010] Furthermore, the circumferential surface of the bag-collecting roller is provided with a movable gripper telescopic groove that allows the movable gripper to extend or retract. The bottom surface of the movable gripper is provided with a proximity switch. The bag-collecting roller is provided with a movable gripper drive cylinder that receives the proximity switch signal and controls the movable gripper to extend or retract.

[0011] Furthermore, the punching unit includes a punching machine base, a punching input roller tube located at the paper inlet end of the punching machine base, a punching flat platform located inside the punching machine base, a punching cutter located inside the punching machine base and above the punching flat platform for downward punching, and a punching output roller tube located at the paper outlet end of the punching machine base.

[0012] Furthermore, the pre-cutting unit includes a pre-cutting machine and a pre-cutting needle knife disposed in the pre-cutting machine to pre-cut the paper of fresh fruit and vegetable packaging bags into a point-cut tear line.

[0013] Furthermore, the punching machine also includes an edge-trimming cutter for cutting and trimming the paper sheets of fresh fruit and vegetable packaging bags; the punching unit also includes a waste paper collection device for collecting waste paper after punching and waste paper from the trimmed grape bag sheets.

[0014] Furthermore, the outer circumference of the tearing and breaking rod tube is provided with an outwardly protruding cam, and an arc-shaped breaking rod protrudes outward from the outer circumference surface of the cam.

[0015] Furthermore, the bag-making machine is also equipped with a waste removal cutting knife for removing excess waste paper from the rear end of the paper tube of fresh fruit and vegetable packaging bags, and a waste paper collection device for collecting the excess waste paper removed by the waste removal process.

[0016] Furthermore, both the waste paper collection device and the waste paper cleaning collection device include a funnel-shaped collection hopper, a collection pipe connected to the collection hopper, a collection fan connected to the collection pipe, and a collection box connected to the air outlet of the collection fan.

[0017] In summary, the production equipment for the fresh produce packaging bag with handles of this utility model includes an unwinding process for unwinding the paper sheet of the fresh produce packaging bag, a printing process for printing on the paper sheet of the fresh produce packaging bag, a punching process for punching holes in the paper sheet of the fresh produce packaging bag to form ventilation holes, a pre-cutting process for pre-cutting the paper sheet of the fresh produce packaging bag to form a tear line (easy tear line), a handle production process for simultaneously producing the handle, and cutting individual handles and pasting them onto the paper sheet of the fresh produce packaging bag. The packaging equipment includes a handle-attaching process, as well as bag-making steps such as paper tube forming, paper tube breaking, waste paper removal, bag forming, and bag collection. All these processes are automated line production methods. The line punching equipment eliminates the separate manual punching step found in existing technologies. Furthermore, the addition of pre-cutting, simultaneous handle production, line-attaching of the handles to the paper bag, paper bag breaking, and waste removal processes also eliminates the separate die-cutting and handle-attaching steps found in existing technologies. Based on this, the production equipment integrates these processes into a line-automated production process, enhancing the overall production capacity. Even with small order demands for handle-attached fresh produce bags, production can still be achieved, increasing capacity and allowing for more flexible order scheduling. This reduces the production cost per unit and significantly shortens the product production cycle. Attached Figure Description

[0018] Figure 1 This is a simplified top view schematic diagram of the structure of the production equipment for packaging bags of fresh fruits and vegetables with handles according to Embodiment 1 of this utility model;

[0019] Figure 2 This is a simplified schematic diagram of the handle unit;

[0020] Figure 3 This is a simplified structural diagram of a bag-making unit;

[0021] Figure 4 This is a simplified structural diagram of the bag collection unit;

[0022] Figure 5 This is a simplified structural diagram of a punching unit;

[0023] Figure 6 It is a simplified schematic diagram of the pre-set unit structure;

[0024] Figure 7 This is a simplified structural diagram of a waste paper collection device and a waste paper cleaning and collection device;

[0025] Figure 8 This is a simplified schematic diagram of the structure of the pre-cutting needle blade and the pre-cutting needle blade drive cylinder;

[0026] Figure 9 This is a simplified schematic diagram of the structure of the tearing and breaking of the tube;

[0027] The labels in the attached diagram are as follows: 1. Paper sheet for fresh produce packaging bags; 2. Unwinding unit; 3. Printing unit; 4. Punching unit; 5. Pre-cutting unit; 6. Handle unit; 7. Bag making unit; 8. Bag collecting unit; 9. Punching machine; 10. Punching input roller; 11. Punching flat table; 12. Punching cutter; 13. Punching output roller; 14. Pre-cutting machine; 15. Pre-cutting needle knife; 16. Handle rope; 17. Handle unwinding frame; 18. Upper handle sticker; 19. Upper handle sticker unwinding frame; 20. Lower handle sticker unwinding frame; 21. Handle making machine; 22. Handle shaping mechanism; 23. Lower handle sticker; 24. Upper glue nozzle; 25. Lower glue nozzle; 26. Handle pressure roller; 27. Punching cutter drive cylinder; 28. Handle cutting knife; 29. ​​Bag making machine 30. Forming device; 31. Tear-breaking roller tube; 32. Folding and pasting forming device; 33. Handle pasting mechanism; 34. Bag collecting roller; 35. Movable gripper; 36. Bag collecting workbench; 37. Fixed baffle; 38. Movable baffle; 39. Baffle drive cylinder; 40. Edge trimming cutter; 41. Cam; 42. Breaking rod; 43. Waste removal cutter; 44. Collection hopper; 45. Collection pipe; 46. Collection fan; 47. Collection box; 48. Movable gripper telescopic groove; 49. Proximity switch; 50. Movable gripper drive cylinder; 51. Pre-cutting needle knife drive cylinder; 52. Edge trimming cutter drive cylinder; 53. Waste removal cutter drive cylinder; 54. Fresh fruit and vegetable packaging bag paper sleeve; 55. Fresh fruit and vegetable packaging bag with handle; 56. Bag collecting roller housing. Detailed Implementation

[0028] Example 1

[0029] This embodiment 1 describes a production equipment for packaging bags of fresh fruits and vegetables with handles, such as... Figure 1 As shown, the system includes: an unwinding unit 2 for unwinding the paper sheet 1 of fresh produce packaging bags; a printing unit 3 for printing on the unwound paper sheet; a punching unit 4 for punching holes in the printed paper sheet; a pre-cutting unit 5 for pre-cutting the punched paper sheet to form tear lines; a handle unit 6 for synchronously producing handles; a handle bonding mechanism 33 for cutting the handles into individual handles and attaching them to the paper sheet of fresh produce packaging bags; a bag making unit 7 for forming bags from the paper sheet of fresh produce packaging bags after the handles are attached; and a bag collecting unit 8 for collecting the bagged fresh produce packaging bags 55 with handles. The production equipment for fresh produce packaging bags with handles includes an unwinding unit, a printing unit, a punching unit, a pre-cutting unit, a handle unit, a handle bonding mechanism, a bag making unit, and a bag collecting unit. The production process involves the following steps: unwinding the paper sheets, printing the paper sheets, punching the paper sheets to create ventilation holes, pre-cutting the paper sheets to create tear lines, simultaneously producing the handles, cutting the handles into individual handles and attaching them to the paper sheets, making the paper sheets into individual bags, and collecting the bags. This completes the automated production process for fresh produce packaging bags with handles. The unwinding unit and printing unit are well-known technologies to those skilled in the art and will not be described in detail here. The technical solutions of these unwinding and printing units are also basically consistent with the feeding and unwinding mechanism and the inline printing mechanism of Chinese Patent No. 202111192558.0, "A Manufacturing Apparatus and Manufacturing Method for Takeout Tote Bags," and the technical content of this patent document can also be referenced. The handle-attaching mechanism is also a well-known technology to those skilled in the art and will not be described in detail here. The technical solution of this handle-attaching mechanism is also basically consistent with the handle-attaching mechanism of Chinese Patent No. 202111192558.0, "A Manufacturing Apparatus and Manufacturing Method for Takeout Tote Bags," except that the handle-attaching mechanism in this embodiment 1 uses the paper output end of the pre-cutting unit instead of the paper output part of the inline printing mechanism used in the aforementioned patent document. The technical content of this patent document can also be referenced.

[0030] In this embodiment 1, as Figure 2As shown, the handle unit includes a handle unwinding frame 17 for unwinding the handle rope 16, an upper handle sticker unwinding frame 19 and a lower handle sticker unwinding frame 20 for unwinding the upper handle sticker 18 and the lower handle sticker 23 respectively, a handle making machine 21, and a handle shaping mechanism 22 installed on the handle making machine to pull and shape the input handle rope into a square wave shape, an upper glue spray nozzle 24 located below the upper handle sticker conveying direction and spraying glue on its bottom surface, a lower glue spray nozzle 25 located above the lower handle sticker conveying direction and spraying glue on its top surface, a handle pressure roller 26 for clamping and pressing the upper and lower handle stickers to adhere and stick the handle rope, and a handle cutting blade 28 located behind the handle pressure roller for longitudinally cutting the square wave handle rope and the upper and lower handle stickers in a two-part manner along the conveying direction. In this embodiment 1, the handle manufacturing mechanism first outputs the handle rope through the handle unwinding frame, and simultaneously outputs the upper and lower handle stickers through the upper and lower handle sticker unwinding frames respectively. The upper handle sticker is unwound above the handle rope, and the lower handle sticker is unwound below the handle rope, so that the upper and lower handle stickers can be clamped and pasted onto the handle rope in subsequent processes. The handle rope passes through the handle shaping mechanism and is pulled back and forth to form a square wave shape. The upper spray nozzle sprays glue on the required glue spraying position on the bottom surface of the upper handle sticker, and the lower spray nozzle sprays glue on the required glue spraying position on the top surface of the lower handle sticker. As the upper and lower handle stickers gradually approach each other and finally clamp the shaped handle rope at the two sprayed glue positions, the upper and lower handle stickers, clamping the handle rope, enter the handle pressure roller to further press and tighten the upper and lower handle stickers together, achieving a stable effect where the handle rope is firmly attached by the two handle stickers. Finally, the glued handle rope and the two handle stickers are automatically cut in half by the handle cutter to form two handle paper pieces. After being cut by the handle bonding mechanism, they form individual handles and are pasted onto the bag body, thus realizing the production of handle connection lines on fresh fruit and vegetable packaging bags. The handle shaping mechanism in this embodiment 1 is a well-known technical means and will not be described in detail here. The technical solution of this handle shaping mechanism is also basically the same as the positioning device in the Chinese patent document "A Manufacturing Device and Manufacturing Method for Takeaway Tote Bag" with Chinese patent number 202111192558.0. The technical content of this patent document can also be referred to.

[0031] In this embodiment 1, as Figure 3As shown, the bag-making unit includes a bag-making machine 29, a forming device 30 on the bag-making machine for positioning and forming fresh fruit and vegetable packaging paper sheets into fresh fruit and vegetable packaging paper tubes, a tearing and breaking roller tube 31 for completely tearing and breaking each tear line of the grape bag paper tube to form a single fresh fruit and vegetable packaging paper sleeve 54, and a folding and pasting forming device 32 for folding and pasting the bottom of the single fresh fruit and vegetable packaging paper sleeve. After the handles of the fresh produce packaging bags are attached by the handle-attaching mechanism, they enter the bag-making machine and are pressed into a paper tube structure by the forming device, thus forming a long paper tube shape. After the paper tube is formed, it enters the tearing and breaking roller tube, which breaks the tear line between two connected paper sleeves of fresh produce packaging bags (i.e., the tear line between the bottom of the previous paper sleeve and the opening of the next paper sleeve), thus forming a single paper sleeve of fresh produce packaging bags. Finally, the broken paper sleeves of fresh produce packaging bags enter the folding and pasting forming device for folding, gluing, pasting, and forming processes to form a complete single fresh produce packaging bag product with handles.

[0032] The forming device and the folding and pasting forming device are well-known technical means to those skilled in the art and will not be described in detail here. The technical solution of this forming device is also basically consistent with the technical solution and principle of the paper bag forming mechanism in Chinese Patent No. 202111192558.0, "A Manufacturing Device and Manufacturing Method for Takeaway Tote Bags". The technical content of this prior art can also be referred to. The folding and pasting forming device is also basically consistent with the technical solution and principle of the material pulling device, conveying wheel device, pressing device, bottom opening device, bottom flipping device, square bottom forming hub device, bottom glue device, bottom insertion device, bottom closing device, control device, conveying hub device and bag collecting hub device of the paper bag forming part mechanism in Chinese Patent No. 202111192558.0, "A Manufacturing Device and Manufacturing Method for Takeaway Tote Bags". The technical content of this prior art can also be referred to.

[0033] In this embodiment 1, as Figure 4As shown, the bag collecting unit includes a bag collecting roller 34 connected and installed to the bag output end of the bag making unit, a movable gripper 35 evenly installed on the circumference of the bag collecting roller and clamping the bottom of the fresh fruit and vegetable packaging bag output from the bag output end of the bag making unit, a bag collecting worktable 36 set at the output position of the bag output end of the bag collecting roller, a fixed baffle 37 fixedly installed on the bag collecting worktable and close to the output position of the bag output end of the bag collecting roller, a movable baffle 38 movably installed on the bag collecting worktable and forming a bag collecting space with the fixed baffle, and a baffle driving cylinder 39 installed on the bag collecting worktable and driving the movable baffle to slide linearly. After the bag-making process is completed, the bag with handles is conveyed to the circumference of the receiving roller. At this time, the movable gripper extends from the circumference of the receiving roller and clamps the bottom of the bag. In this way, the bag can rotate with the receiving roller. When the movable gripper rotates to the top position near the fixed baffle, the movable gripper retracts into the receiving roller and no longer clamps the bag. At this moment, due to inertia, the bag detaches from the circumference of the receiving roller and falls into the receiving space between the fixed baffle and the movable baffle, forming a concentrated bag collection effect. The movable gripper quickly retracts into the bag-collecting roller when it approaches the fixed baffle, preventing it from contacting the fixed baffle and ensuring smooth rotation of the bag-collecting roller. The baffle drive cylinder controls the linear sliding of the movable baffle, adjusting the distance of the bag-collecting space. This prevents the bag-collecting space from being too large, causing the bag with handles to tilt or lie flat during collection (not a vertical collection method), and also prevents the bag with handles to be unable to enter the collection space and fall out due to a small collection space.

[0034] In this embodiment 1, the circumferential surface of the bag-collecting roller is provided with a movable gripper telescopic groove 48 that allows the movable gripper to extend or retract. A proximity switch 49 is provided on the bottom surface of the movable gripper. An movable gripper drive cylinder 50 is provided inside the bag-collecting roller to receive the proximity switch signal and control the extension or retraction of the movable gripper. A bag-collecting roller housing 56, covering at least half of its area, is also provided on the outer surface of the bag-collecting roller. The movable gripper can extend and retract within the movable gripper telescopic groove, achieving the purpose of extending and retracting while being clamped on the bag-collecting roller. The proximity switch on the movable gripper allows for contactless retraction of the movable gripper into the telescopic groove and clamping of the bottom of the fresh produce bag with handles when extended. The movable gripper's extension and retraction are controlled by the movable gripper drive cylinder. When the movable gripper retracts into the telescopic groove, it rotates with the bag-collecting roller into the outer surface of the bag-collecting roller. Inside the casing, the movable gripper is currently covered by the bag-collecting roller and senses that the outer casing of the bag-collecting roller will not extend. When the movable gripper rotates to the point where it is no longer covered by the bag-collecting roller and is triggered to extend outside the bag-collecting roller, the fresh produce packaging bag with handle is also conveyed to the extended position of the movable gripper. In this way, under the action of inertial force when the fresh produce packaging bag with handle is output, the bottom of the fresh produce packaging bag with handle is just inserted into the movable gripper and clamped, thus achieving the purpose of the fresh produce packaging bag with handle following the rotation of the bag-collecting roller to the other side.

[0035] In this embodiment 1, as Figure 5 As shown, the punching unit includes a punching machine 9, a punching input roller 10 located at the paper inlet end of the punching machine, a punching platform 11 located within the punching machine, a punching cutter 12 located within the punching machine and above the punching platform for downward punching, and a punching output roller 13 located at the paper outlet end of the punching machine. After the printing process, the paper sheets for fresh fruit and vegetable packaging bags need to be punched to form ventilation holes on the bag body. During punching, the paper sheets are first fed into the punching machine through the punching input roller, then horizontally and stably conveyed on the punching platform. When passing under the punching cutter, the punching cutter presses down to punch the paper sheets for ventilation holes. After punching, the paper sheets are output through the punching output roller and enter the preset process. The punching cutter can be controlled and driven by a punching cutter drive cylinder 27, which can control the punching cutter to press down for punching and to return to its original position.

[0036] In this embodiment 1, as Figure 6 and Figure 8As shown, the pre-cutting unit includes a pre-cutting machine 14 and a pre-cutting needle-tooth knife 15 disposed within the pre-cutting machine to pre-cut the paper sheet of fresh fruit and vegetable packaging bags into a dotted tear line. When the paper sheet of fresh fruit and vegetable packaging bags enters the pre-cutting process, it enters the pre-cutting machine and passes under the pre-cutting needle-tooth knife. The pre-cutting needle-tooth knife presses down and passes through the paper sheet of fresh fruit and vegetable packaging bags, pre-cutting a dotted tear line on the paper sheet (without cutting the fresh fruit and vegetable packaging bag completely). This allows the paper tube of fresh fruit and vegetable packaging bags formed in subsequent processes to be torn, thus pre-cutting the paper tube to form individual paper sleeves of fresh fruit and vegetable packaging bags. The pre-cutting needle-tooth knife is like a needle-shaped dagger, and the pre-cutting needle-tooth knife is arranged in a dense row horizontally; in this way, a dotted tear line is formed on the paper sheet of fresh fruit and vegetable packaging bags as it passes under the pre-cutting needle-tooth knife. Among them, the pre-cutting needle knife can be controlled and driven by the pre-cutting needle knife drive cylinder 51, which can control the pre-cutting needle knife to press down on the paper of fresh fruit and vegetable packaging bag to form a point-cutting knife mark tear line and reset.

[0037] In this embodiment 1, the punching machine also includes an edge-trimming cutter 40 for cutting and trimming the paper sheets of fresh fruit and vegetable packaging bags; the punching unit also includes a waste paper collection device for collecting waste paper after punching and waste paper from the trimmed grape bag sheets. Since the width of the fresh fruit and vegetable packaging bag sheets unwound from the unwinding unit does not meet the size requirements of the product with handles and subsequent production requirements, the width of the fresh fruit and vegetable packaging bag sheets needs to be trimmed during the punching process so that the fresh fruit and vegetable packaging bag sheets meet the subsequent production size requirements; the edge-trimming cutter is controlled by the edge-trimming cutter drive cylinder 52 to press down and cut and reset.

[0038] In this embodiment 1, as Figure 9 As shown, the tearing and breaking roller tube has an outwardly protruding cam 41 on its outer circumference, and an arc-shaped breaking rod 42 protrudes outward from the outer circumference of the cam. When rotating, the tearing and breaking roller tube will rotate along with the cam and the breaking rod. The end of the breaking rod will rotate to the tear line of the point-cut knife mark between two connected fresh fruit and vegetable packaging bag sleeves and press down. When pressing down, it will break this tear line, thus separating the bottom of the previous fresh fruit and vegetable packaging bag sleeve from the opening of the next fresh fruit and vegetable packaging bag sleeve. Then the breaking rod continues to rotate downward and when it rotates upward, it will flip out from behind the bottom of the previous fresh fruit and vegetable packaging bag sleeve without obstructing the continued conveying of the previous fresh fruit and vegetable packaging bag sleeve. In this way, when the breaking rod rotates to the breaking position of the next tear line, it will continue to break, forming a continuous and uninterrupted single fresh fruit and vegetable packaging bag sleeve breaking process.

[0039] In this embodiment 1, the bag-making machine is also equipped with a waste removal cutting knife 43 for removing excess waste paper from the rear end of the fresh fruit and vegetable packaging bag paper tube, and a waste paper collection device for collecting the removed waste paper. After forming a single fresh fruit and vegetable packaging bag paper sleeve, before entering the folding and pasting forming device, there will be some excess waste paper at the bottom of the fresh fruit and vegetable packaging bag paper sleeve that needs to be removed so that it can meet the size requirements and be cut neatly when entering the folding and pasting forming device. The waste removal cutting knife is used to remove the excess waste paper from the rear end of the fresh fruit and vegetable packaging bag paper sleeve. The waste removal cutting knife is controlled by the waste removal cutting knife drive cylinder 53 to press down to cut and reset.

[0040] In this embodiment 1, as Figure 7 As shown, both the waste paper collection device and the waste paper cleaning collection device include a funnel-shaped collection hopper 44, a collection pipe 45 connected to the collection hopper, a collection fan 46 connected to the collection pipe, and a collection box 47 connected to the air outlet of the collection fan. Since some waste paper is generated during punching, edge trimming, and waste cleaning, the waste paper collection device and the waste paper cleaning collection device collect and process this waste paper. When collecting waste paper, the collection fan uses strong suction to draw the waste paper falling into the collection hopper, and then collects it through the collection pipe into the collection box for unified collection.

[0041] In this embodiment 1, the production equipment for the fresh produce packaging bag with handles includes an unwinding process for unwinding the paper sheet of the fresh produce packaging bag, a printing process for printing on the paper sheet of the fresh produce packaging bag, a punching process for punching the paper sheet of the fresh produce packaging bag to form ventilation holes, a pre-cutting process for pre-cutting the paper sheet of the fresh produce packaging bag to form a tear line (easy tear line), a handle production process for simultaneously producing the handles, and cutting and pasting individual handles onto the paper sheet of the fresh produce packaging bag. The process includes the attachment of handles, bag making (paper tube forming, paper tube breaking, waste paper removal, bag forming), and bag collection; all these processes are automated line production. The line punching equipment eliminates the separate manual punching step found in existing technologies. Furthermore, the addition of pre-cutting, simultaneous handle production, line attachment of handles to the paper bag, paper bag breaking, and waste removal processes also eliminates the separate die-cutting and handle making / attaching steps found in existing technologies. Based on this, the production equipment integrates these processes into a line-based automated production process, enhancing the overall production capacity. Even with low order demand for handle-equipped fresh produce bags, production can still be achieved, increasing capacity and allowing for more flexible order scheduling. This reduces the production cost per unit and significantly shortens the product production cycle.

[0042] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the structure of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A production equipment for packaging bags of fresh fruits and vegetables with handles, characterized in that, The system includes an unwinding unit (2) for unwinding the paper sheet of fresh fruit and vegetable packaging bag (1), a printing unit (3) for printing the unwound paper sheet of fresh fruit and vegetable packaging bag, a punching unit (4) for punching the printed paper sheet of fresh fruit and vegetable packaging bag, a pre-cutting unit (5) for pre-cutting the punched paper sheet of fresh fruit and vegetable packaging bag to form a tear line, a handle unit (6) for synchronously producing handles, a handle bonding mechanism (33) for cutting the handles to form individual handles and pasting them onto the paper sheet of fresh fruit and vegetable packaging bag, a bag making unit (7) for forming bags from the pasted paper sheet of fresh fruit and vegetable packaging bag, and a bag collecting unit (8) for collecting the bag-made fresh fruit and vegetable packaging bags (55) with handles. The handle unit includes a handle unwinding frame (17) for unwinding the handle round rope (16), an upper handle sticker unwinding frame (19) and a lower handle sticker unwinding frame (20) for unwinding the upper handle sticker (18) and the lower handle sticker (23) respectively, a handle making machine (21), and a handle shaping mechanism (22) installed on the handle making machine to pull and shape the input handle round rope into a square wave shape, an upper glue spray nozzle (24) located below the upper handle sticker conveying direction and spraying glue on its bottom surface, a lower glue spray nozzle (25) located above the lower handle sticker conveying direction and spraying glue on its top surface, a handle pressure roller (26) for clamping and pasting the upper and lower handle stickers and the handle round rope, and a handle cutting blade (28) located behind the handle pressure roller for cutting the square wave handle round rope and the upper and lower handle stickers in a longitudinal direction along the conveying direction. The bag-making unit includes a bag-making machine (29), a forming device (30) on the bag-making machine for positioning and forming fresh fruit and vegetable packaging paper sheets into fresh fruit and vegetable packaging paper tubes, a tearing and breaking roller (31) for completely tearing and breaking each tear line of the grape bag paper tube to form a single fresh fruit and vegetable packaging paper sleeve (54), and a folding and pasting forming device (32) for folding and pasting the bottom of the single fresh fruit and vegetable packaging paper sleeve.

2. The production equipment for packaging bags of fresh fruits and vegetables with handles according to claim 1, characterized in that, The bag collecting unit includes a bag collecting roller (34) connected to the bag output end of the bag making unit, a movable gripper (35) evenly installed on the circumference of the bag collecting roller and clamping the bottom of the fresh fruit and vegetable packaging bag output from the bag output end of the bag making unit, a bag collecting worktable (36) set corresponding to the output position of the bag output end of the bag collecting roller, a fixed baffle (37) fixedly installed on the bag collecting worktable and close to the output position of the bag output end of the bag collecting roller, a movable baffle (38) movably installed on the bag collecting worktable and forming a bag collecting space with the fixed baffle, and a baffle driving cylinder (39) installed on the bag collecting worktable and driving the movable baffle to slide linearly.

3. The production equipment for packaging bags of fresh fruits and vegetables with handles according to claim 2, characterized in that, The bag collecting roller is provided with a movable gripper extension groove (48) on its circumferential surface, which allows the movable gripper to extend or retract. The bottom surface of the movable gripper is provided with a proximity switch (49). The bag collecting roller is provided with a movable gripper drive cylinder (50) that receives the proximity switch signal and controls the movable gripper to extend or retract.

4. The production equipment for packaging bags of fresh fruits and vegetables with handles according to claim 3, characterized in that, The punching unit includes a punching machine base (9), a punching input roller tube (10) located at the paper inlet end of the punching machine base, a punching plane (11) located inside the punching machine base, a punching cutter (12) located inside the punching machine base and above the punching plane, capable of punching downwards, and a punching output roller tube (13) located at the paper outlet end of the punching machine base.

5. The production equipment for packaging bags of fresh fruits and vegetables with handles according to claim 4, characterized in that, The pre-cutting unit includes a pre-cutting machine (14) and a pre-cutting needle knife (15) installed in the pre-cutting machine to pre-cut the paper of fresh fruit and vegetable packaging bags to form a point-cut tear line.

6. The production equipment for packaging bags of fresh fruits and vegetables with handles according to claim 5, characterized in that, The punching machine also includes an edge trimming cutter (40) for cutting and trimming the paper sheets of fresh fruit and vegetable packaging bags; the punching unit also includes a waste paper collection device for collecting waste paper after punching and waste paper from cutting and trimming grape bag paper sheets.

7. The production equipment for packaging bags of fresh fruits and vegetables with handles according to claim 6, characterized in that, The outer circumference of the tearing and breaking rod tube is provided with an outwardly protruding cam (41), and an arc-shaped breaking rod (42) protrudes outwardly from the outer circumference of the cam.

8. The production equipment for packaging bags of fresh fruits and vegetables with handles according to claim 7, characterized in that, The bag-making machine is also equipped with a waste removal cutting knife (43) for removing excess waste paper from the rear end of the paper tube of fresh fruit and vegetable packaging bags, and a waste paper collection device for collecting the excess waste paper removed by the waste removal process.

9. The production equipment for packaging bags of fresh fruits and vegetables with handles according to claim 8, characterized in that, The waste paper collection device and the waste paper cleaning collection device both include a funnel-shaped collection hopper (44), a collection pipe (45) connected to the collection hopper, a collection fan (46) connected to the collection pipe, and a collection box (47) connected to the air outlet of the collection fan.

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