A printing device for plastic bag processing

Abstract

The utility model relates to a kind of printing device for plastic bag processing, it is related to plastic bag processing technical field, including support platform, the upper end of support platform is equipped with machine tool frame, conveying belt group is installed in machine tool frame, the upper end of machine tool frame is equipped with limit strip group, the left side of support platform is equipped with printing machine, and printing operation is carried out to the plastic bag ascending on conveying belt group by printing machine, the middle part of machine tool frame is installed with receiving shell left and right symmetrical, receiving shell is installed with leveling mechanism up and down symmetrical, and leveling mechanism is driven between by drive mechanism, and drive mechanism is arranged in receiving shell.The utility model can solve the situation that due to the light texture of plastic bag, it may be displaced, wrinkled due to wind power and other factors during conveying belt conveying process, which will lead to inaccurate printing position, printing pattern deformation and other problems, thereby seriously affecting printing quality and efficiency and other problems.

Description

Technical Field

[0001] This utility model relates to the field of plastic bag processing technology, and in particular to a printing device for plastic bag processing. Background Technology

[0002] In the plastic bag manufacturing industry, inkjet printing technology, as a key element for product identification and brand display, has evolved into various technical solutions. Traditional inkjet printing equipment can be categorized as inkjet printing devices: inkjet equipment uses piezoelectric or thermal inkjet printheads to achieve variable data printing through a non-contact method, offering operational flexibility. With the increasing demand for personalized printing in the plastic packaging industry, especially on ultra-thin plastic bags and biodegradable materials, printing stability has become a key focus for technological improvement.

[0003] When using traditional printing tools, the plastic bag is first laid flat on a conveyor belt, which then transports it forward. Once the bag is under the printer, the printing process begins. However, due to the lightweight nature of the plastic bag, it may shift or wrinkle during transport due to factors such as wind. This can lead to inaccurate printing positions and distorted printed patterns, severely impacting printing quality and efficiency.

[0004] Furthermore, with the increasing demands for printing quality in the plastic bag manufacturing industry, there is an urgent need for a printing device for plastic bag processing. Summary of the Invention

[0005] (I) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a printing device for processing plastic bags, comprising a support platform, a machine tool frame installed at the upper end of the support platform, a conveyor belt assembly installed in the machine tool frame, a limit strip assembly installed at the upper end of the machine tool frame, a printing machine installed on the left side of the support platform, the printing machine performing printing operations on plastic bags rising from the conveyor belt assembly, and symmetrically installed storage shells in the middle of the machine tool frame, with leveling mechanisms symmetrically installed vertically in the storage shells, the leveling mechanisms being driven by a drive mechanism located within the storage shells.

[0006] The limiting strip group includes an overhead support one, an overhead support one installed on the upper rear side of the machine tool frame, an overhead support two installed on the upper front side of the machine tool frame, and a limiting strip connecting the overhead support one and the overhead support two.

[0007] The storage shell includes a fixing plate, and a housing is installed on the outside of the fixing plate.

[0008] The leveling mechanism includes a lifting rod, which is slidably disposed in a movable groove in a fixed plate. The lifting rod and the movable groove are elastically connected. A lockable movable part is horizontally slidably disposed inside the lifting rod. A leveling component is installed at the inner end of the movable part, and an extrusion head is installed at the outer end of the movable part. An extrusion groove is provided at the upper end of the extrusion head, and the bottom of the extrusion groove is a sloping structure.

[0009] The movable component includes a movable rod, which is horizontally slidably disposed in a built-in groove in a lifting rod. A hidden groove is provided in the middle of the movable rod, and a snap-fit ​​block is elastically slidably connected in the hidden groove. In the initial state, the inner part of the snap-fit ​​block is snapped into the snap-fit ​​groove in the lifting rod. A pressure block that is used to press and cooperate with the snap-fit ​​block is slidably disposed in the snap-fit ​​groove. A pressing head is installed at the outer end of the movable rod.

[0010] The leveling component includes a connecting plate, which is connected to a connector via a support rod. A buffer groove is provided at the lower end of the connector. A sliding block is horizontally slidably arranged in the buffer groove, and the inner end of the sliding block is elastically connected to the buffer groove. A leveling head is installed at the lower end of the sliding block, and a smooth layer is laid at the lower end of the leveling head. The connecting plate and the lifting rod are elastically connected.

[0011] The driving mechanism includes a linkage extrusion component, which is used in a pressing engagement with the extrusion groove. Gears mesh between the linkage extrusion components, and the gears are mounted on the output shaft of the motor. The motor is mounted on a fixed plate via a base.

[0012] The linkage extrusion component includes a sliding frame that is slidably disposed on the side wall of the housing. An extrusion column is installed at the end of the sliding frame away from the gear, and the extrusion column and the extrusion groove are used for extrusion cooperation. A rack frame is installed at the other end of the sliding frame, and gears mesh between the rack frames.

[0013] (ii) Beneficial effects 1. Improve printing quality: Through the synergistic effect of the limiting strip group and the leveling mechanism, the plastic bags are effectively prevented from shifting or wrinkling during the conveying process, ensuring accurate printing position and clear pattern, and significantly improving printing quality and consistency.

[0014] Enhanced stability: The leveling mechanism adopts a bidirectional synchronous drive design, which keeps the plastic bag flat in the printing area by slightly pulling it in the opposite direction. At the same time, the smooth layer and elastic connection structure avoid damage caused by excessive pulling, thus balancing stability and safety.

[0015] High efficiency and automation: The device adopts an intermittent conveying and leveling linkage mechanism to realize automated control of the printing process, reduce manual intervention, improve production efficiency, and is suitable for high-speed production lines. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is an overall sectional view of this application; Figure 3 This application Figure 2 A partial schematic diagram; Figure 4 This is a schematic diagram showing the positions of the sliding frame, rack frame, and gear in this application; Figure 5 This application Figure 3 A magnified view of the area at point X. Detailed Implementation

[0018] The embodiments of this utility model will now be described with reference to the accompanying drawings. In this process, to ensure clarity and convenience, we may exaggerate the width of lines or the size of constituent elements in the drawings.

[0019] Furthermore, the terms used below are defined based on the functions of this utility model and may vary depending on the user's or operator's intent or convention. Therefore, these terms are defined based on the entire contents of this specification.

[0020] like Figures 1 to 3 As shown, a printing device for processing plastic bags includes a support platform 1, a machine tool frame 2 mounted on the upper end of the support platform 1, a conveyor belt assembly 3 mounted in the machine tool frame 2, a limit strip assembly 4 mounted on the upper end of the machine tool frame 2, and a printer 5 mounted on the left side of the support platform 1. The printer 5 is existing technology and is widely used in packaging, printing, electronics and other industries. It is suitable for marking on high-speed production lines. It has high DOD precision and is often used for graphic printing. The printer 5 performs printing operations on the plastic bags rising on the conveyor belt assembly 3. The conveyor belt assembly 3 is existing technology and is mainly used to move items for transportation. A storage shell 6 is symmetrically mounted on the left and right sides of the middle of the machine tool frame 2. A leveling mechanism 7 is symmetrically mounted on the top and bottom of the storage shell 6. The leveling mechanisms 7 are driven by a drive mechanism 8, which is located in the storage shell 6.

[0021] In the actual printing process, the plastic bag is placed flat behind the upper end of the conveyor belt group 3. The conveyor belt group 3 drives the plastic bag forward. During the conveying process, the limiting strip group 4 limits the upper part of the plastic bag but does not directly contact the flat plastic bag. Whenever a plastic bag is conveyed to the bottom of the inkjet printer 5, the conveyor belt group 3 stops intermittently. At the same time, the driving mechanism 8 drives the leveling mechanism 7 to slightly pull the left and right sides of the plastic bag in the opposite direction, thereby further ensuring the flatness of the plastic bag in the printing area. The leveling mechanism 7, driven by the driving mechanism 8, can achieve synchronous and stable movement, so that the plastic bag maintains the best printing surface state during the printing process, thereby improving the printing clarity and quality. This structure is reasonably designed, easy to operate, and effectively improves the automation level and printing efficiency of the equipment. Subsequently, the inkjet printer 5 prints the further flattened plastic bag. After printing, the conveyor belt group 3 drives the plastic bag forward until the next plastic bag moves to the bottom of the inkjet printer 5. The above operation is repeated to perform intermittent printing on the plastic bag.

[0022] like Figure 1 As shown, the limiting strip group 4 includes an overhead support 41. The overhead support 41 is installed on the upper rear side of the machine tool frame 2, and the overhead support 42 is installed on the upper front side of the machine tool frame 2. A limiting strip 43 is connected between the overhead support 41 and the overhead support 42. The rear end of the limiting strip 43 is an upwardly curved arc structure, which facilitates the plastic bag to enter below the limiting strip 43. There is a gap between the limiting strip 43 and the upper end face of the conveyor belt group 3, which provides space for the plastic bag to enter.

[0023] like Figure 3 As shown, the storage shell 6 includes a fixing plate 61, and a shell 62 is installed on the outside of the fixing plate 61.

[0024] like Figure 3 , Figure 5 As shown, the leveling mechanism 7 includes a lifting rod 71, which is slidably disposed in the movable groove 711 opened in the fixed plate 61. The lifting rod 71 and the movable groove 711 are elastically connected. A lockable movable part 72 is horizontally slidably disposed inside the lifting rod 71. A leveling component 73 is installed at the inner end of the movable part 72. An extrusion head 74 is installed at the outer end of the movable part 72. An extrusion groove 75 is opened at the upper end of the extrusion head 74. The bottom of the extrusion groove 75 is a sloped structure.

[0025] like Figure 3 , Figure 5As shown, the movable component 72 includes a movable rod 721, which is horizontally slidably disposed in the built-in groove of the lifting rod 71. A hidden groove 722 is provided in the middle of the movable rod 721, and a locking block 723 is elastically slidably connected in the hidden groove 722. In the initial state, the inner part of the locking block 723 is locked in the locking groove 724 of the lifting rod 71. At this time, the horizontal position between the lifting rod 71 and the movable rod 721 is locked. A pressure block 725 that is used to press and cooperate with the locking block 723 is slidably disposed in the locking groove 724. A pressing head 74 is installed on the outer end of the movable rod 721.

[0026] like Figure 3 As shown, the leveling component 73 includes a connecting plate 731, which is connected to a connector 732 via a support rod. A buffer groove is provided at the lower end of the connector 732, and a sliding block 733 is horizontally slidably arranged in the buffer groove. The inner end of the sliding block 733 is elastically connected to the buffer groove. A leveling head 734 is installed at the lower end of the sliding block 733, and a smooth layer is laid at the lower end of the leveling head 734. Although the leveling head 734 needs to pull the plastic bag to both sides to level it, a smooth layer is added to prevent excessive pulling, thus avoiding damage to the plastic bag caused by excessive pulling. The connecting plate 731 and the lifting rod 71 are elastically connected.

[0027] like Figure 3 , Figure 4 As shown, the drive mechanism 8 includes a linkage extrusion member 81, which is used in a pressing fit with the extrusion groove 75. A gear 82 meshes between the linkage extrusion members 81, and the gear 82 is mounted on the output shaft of the motor 83. The motor 83 is mounted on the fixed plate 61 via a base.

[0028] like Figure 3 , Figure 4 As shown, the linkage extrusion component 81 includes a sliding frame 811, which is slidably disposed on the side wall of the housing 62. An extrusion column 812 is installed at one end of the sliding frame 811 away from the gear 82. The extrusion column 812 and the extrusion groove 75 are used for extrusion cooperation. A rack frame 813 is installed at the other end of the sliding frame 811, and the gear 82 is meshed between the rack frames 813.

[0029] During the actual leveling process, when the plastic bag is conveyed directly below the inkjet printer 5, the conveyor belt group 3 stops intermittently. At the same time, the motor 83 drives the gear 82 to rotate. Under the meshing of the gear 82 and the rack frame 813, the upper and lower sliding frames 811 move towards each other. At this time, the extrusion column 812 connected to the sliding frame 811 drives the extrusion head 74, the lifting rod 71, and the moving part 72 to move linearly up and down (the overall movement mode is that the upper and lower lifting rods 71 ​​move towards each other, and since the pressure block 725 is not affected by the moving groove 71). When the compression of the extrusion head 74 occurs, the inner and outer parts of the clamping block 723 are respectively clamped in the hidden groove 722 and the clamping groove 724. At this time, the horizontal position between the lifting rod 71 and the movable rod 721 is locked. Therefore, when the extrusion head 74 extrudes the extrusion groove 75, there will be no displacement between them. It will only drive the extrusion head 74 to move up and down linearly. When the upper and lower lifting rods 71 ​​move towards each other to the minimum distance, the upper and lower leveling heads 734 clamp the plastic bag and the conveyor belt in the temporarily stopped conveyor belt group 3 (because the conveyor belt is...). The flexible structure, where simply pressing down on the plastic bag with the upper leveling head 734 would deform the conveyor belt supporting the bag, would be ineffective in pulling and leveling the bag when the leveling head 734 moves outward. Now, by placing the leveling head 734 below and attaching it to the lower surface of the conveyor belt, a stable platform is provided, facilitating subsequent leveling of the plastic bag. Simultaneously, the pressure block 725, squeezed by the movable groove 711, completely extrudes the locking block 723 in the locking groove 724, causing it to fully contract. Returning to the hidden slot 722, the horizontal position between the lifting rod 71 and the movable rod 721 is unlocked. Then, under the pressure of the squeezing column 812 and the squeezing slot 75, the movable rod 721 causes the leveling component 73 to move slightly outward. The leveling head 734 attached to the top of the plastic bag pushes the plastic bag outward. Due to the setting of the smooth layer and the elastic connection between the inner end of the sliding block 733 and the buffer slot, the plastic bag moves relative to the smooth layer when it cannot be pulled outward, and the plastic bag is further flattened.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A printing device for processing plastic bags, characterized in that, The system includes a support platform, a machine tool frame mounted on the upper end of the support platform, a conveyor belt assembly mounted in the machine tool frame, a limit strip assembly mounted on the upper end of the machine tool frame, a printer mounted on the left side of the support platform, and a printer that prints on plastic bags rising from the conveyor belt assembly. A storage shell is symmetrically mounted on the left and right sides of the middle of the machine tool frame, and a leveling mechanism is symmetrically mounted on the top and bottom of the storage shell. The leveling mechanisms are driven by a drive mechanism located within the storage shell.

2. The inkjet printing device for processing plastic bags according to claim 1, characterized in that: The limiting strip group includes an overhead support one, an overhead support one installed on the upper rear side of the machine tool frame, an overhead support two installed on the upper front side of the machine tool frame, and a limiting strip connecting the overhead support one and the overhead support two.

3. The inkjet printing device for processing plastic bags according to claim 1, characterized in that: The storage shell includes a fixing plate, and a housing is installed on the outside of the fixing plate.

4. The inkjet printing device for processing plastic bags according to claim 3, characterized in that: The leveling mechanism includes a lifting rod, which is slidably mounted in a movable slot in a fixed plate. The lifting rod and the movable slot are elastically connected. A lockable movable part is horizontally slidably mounted inside the lifting rod. A leveling component is installed at the inner end of the movable part, and an extrusion head is installed at the outer end of the movable part. An extrusion groove is opened at the upper end of the extrusion head, and the bottom of the extrusion groove is a sloping structure.

5. The inkjet printing device for processing plastic bags according to claim 4, characterized in that: The movable component includes a movable rod, which is horizontally slidably disposed in the built-in groove of the lifting rod. A hidden groove is provided in the middle of the movable rod, and a snap-fit ​​block is elastically slidably connected in the hidden groove. In the initial state, the inner part of the snap-fit ​​block is snapped into the snap-fit ​​groove of the lifting rod. A pressure block that is used to press and cooperate with the snap-fit ​​block is slidably disposed in the snap-fit ​​groove. A pressing head is installed at the outer end of the movable rod.

6. The inkjet printing device for processing plastic bags according to claim 4, characterized in that: The leveling component includes a connecting plate, which is connected to a connector via a support rod. A buffer groove is provided at the lower end of the connector. A sliding block is horizontally slidably arranged in the buffer groove, and the inner end of the sliding block is elastically connected to the buffer groove. A leveling head is installed at the lower end of the sliding block, and a smooth layer is laid at the lower end of the leveling head. The connecting plate and the lifting rod are elastically connected.

7. The inkjet printing device for processing plastic bags according to claim 4, characterized in that: The drive mechanism includes a linkage extrusion component, which is used in a pressing fit with the extrusion groove. Gears mesh between the linkage extrusion components, and the gears are mounted on the output shaft of the motor. The motor is mounted on the fixed plate via a base.

8. The inkjet printing device for processing plastic bags according to claim 7, characterized in that: The linkage extrusion component includes a sliding frame, which is slidably disposed on the side wall of the housing. An extrusion column is installed at the end of the sliding frame away from the gear, and the extrusion column and the extrusion groove are used for extrusion cooperation. A rack frame is installed at the other end of the sliding frame, and gears mesh between the rack frames.

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