A bag labelling machine

Abstract

The utility model discloses a kind of adhesive bag labellers, including rack, flat conveying table and openwork opening being installed on the top of rack, adhesive bag unwinding assembly and label unwinding labelling assembly being installed on rack and being located above flat conveying table, movable installation is located below adhesive bag unwinding assembly in flat conveying platform one end and movable adhesive bag pressing stick tube, fixed installation is located in flat conveying platform other end and fixed adhesive bag pressing stick tube, conveying tightening stick tube assembly is installed on rack and is located above and in openwork opening, adhesive bag winding assembly is installed on rack and is located above openwork opening;Timing speed counter is further provided on rack and is positioned to the position of labelling, and display screen of the display adhesive bag roll unwinding comes out yardage is also positioned to the position of labelling.This adhesive bag labeller full-automatic labelling mode can solve the labor intensity of staff, improve labelling efficiency, realize reliable and accurate labelling effect and the purpose of automatic production.

Description

Technical Field

[0001] This utility model relates to the technical field of plastic bag labeling equipment, and more particularly to a plastic bag labeling machine with automatic bag labeling function and improved labeling efficiency. Background Technology

[0002] Currently, when using plastic bags for takeout packaging, labels are sometimes affixed to the bags. These labels can display relevant dates such as birthdates and the date the labels were applied. Traditionally, labeling is done manually on the plastic bags. This involves separating and stacking each bag after production, then manually labeling or using semi-automatic labeling machines. This method is not only labor-intensive and inefficient, but also requires employees to use their hands to handle the tape or bend over while sitting at their workstations to pick up and apply the tape, making the process even more arduous and laborious. Furthermore, the labeling position is often unreliable and inaccurate, frequently resulting in errors or misalignments, leading to poor labeling quality and preventing automated labeling production.

[0003] Although Chinese Patent No. 201711230715.6 discloses "fully automatic plastic bag labeling machine" and Chinese Patent No. 02320687561.8 discloses "plastic bag labeling machine", disclosing the technology of automatic labeling on plastic bags, the labeling machines in these patent documents still have many problems in actual use, as follows: (1) The plastic bags are flipped and labeled and transported by flipping mechanism or vacuum nozzle, but the plastic bags are still stacked in the way that each plastic bag is separated and stacked. In this way, when labeling the plastic bags, the top plastic bag is supported by the plastic bags below. Since the plastic bags are all soft bags, it is impossible to guarantee that the plastic bags to be labeled will not deform or sink during the labeling process. It is easy to cause poor labeling quality due to the uneven surface of the plastic bags, resulting in a high defect rate of labeled plastic bags. (2) When labeling, the roll of plastic bag needs to be rolled out and separated into individual plastic bags beforehand, and then the plastic bags are stacked together. This increases the pre-labeling process, and the labeled plastic bags also need to be stacked neatly together. When the labeled plastic bags need to be packaged, they can easily pull up the adjacent plastic bags below, causing inconvenience in the packaging process.

[0004] Therefore, it is necessary to improve the structure of existing plastic product labeling equipment and develop a plastic bag labeling machine that can automatically label continuously output rolls of plastic bags and improve labeling efficiency and quality. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a plastic bag labeling machine. This machine improves the traditional stacking and labeling method of plastic bags by using a continuous, roll-shaped output labeling method for connected plastic bags, achieving a continuous and compact automated operation for labeling. During labeling, a rigid support platform, such as a flat worktable, supports, conveys, and flattens the plastic bags to achieve a flat state. The machine also combines a rotating scraper and a labeling brush to separate the label from the label tape and ensure that the label is smoothly and evenly adhered to the designated position on the plastic bag. Furthermore, a timer and speed counter are used to position the plastic bags during labeling. This fully automatic labeling machine for plastic bags reduces the labor intensity of employees, improves labeling efficiency, and changes the traditional manual labeling method. It uses a flat worktable conveyor platform to ensure flat and even output of the plastic bags and provides strong rigid platform support during labeling, improving labeling quality. It employs roll-to-roll output, collection of plastic bags, and collection of the labeled tape, achieving automatic bag labeling with quick and labor-saving operation. During labeling, the machine inputs data based on the plastic bag size into a timer and speed counter for precise labeling positioning. The labeling position can also be adjusted to achieve reliable and accurate labeling results and automated production.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a plastic bag labeling machine, including a frame, a flat conveyor platform and a hollow opening installed on the top of the frame, a plastic bag unwinding assembly and a label unwinding and labeling assembly installed on the frame and above the flat conveyor platform, a movable plastic bag pressing roller tube movably installed at one end of the flat conveyor platform and below the plastic bag unwinding assembly, a fixed plastic bag pressing roller tube fixedly installed at the other end of the flat conveyor platform, a conveying and tightening roller tube assembly installed on the frame and above and inside the hollow opening, and a plastic bag winding assembly installed on the frame and above the hollow opening; the frame is also provided with a timing and speed counter corresponding to the conveying and tightening roller tube assembly and positioning the labeling position, and a display screen displaying the length of the plastic bag roll unwound.

[0007] Furthermore, the outer ends of the movable rubber bag roller tube are fitted with friction outer rings that form frictional contact with the flat conveyor table. The friction outer rings are rough rubber rings with an uneven surface, or the friction outer rings are rubber rings with protruding protrusions evenly distributed on the surface.

[0008] Furthermore, the label unwinding and labeling assembly includes a label roll unwinding frame, multiple label conveying rollers for conveying and guiding the unwound label tape, guide tensioning rollers for guiding and tightening the conveyed label tape, a label conveying inclined platform for tightly conveying the label tape, a rotating scraper located at the output end of the label conveying inclined platform for separating the label and label tape, a labeling brush located above the label conveying inclined platform for smoothly applying the separated label to the plastic bag below to form a label bag, a guide recovery roller for guiding and recovering the separated label tape, and a label rewinding frame for recovering the separated label.

[0009] Furthermore, the conveying and tightening roller assembly includes a conveying guide roller for conveying the label bag, an upper pressure roller and a lower pressure roller for pressing the conveyed and guided label bag, a movable lower pressure tightening roller for pressing and tightening the label bag using its own gravity, and a conveying and discharging roller for conveying and discharging the label bag; the timing speed counter faces the outside of the pressing lower pressure roller.

[0010] Furthermore, the output end of the label conveying tilting platform is a smooth semi-circular shape.

[0011] Furthermore, the frame is also provided with a vertical support for the tensioning roller tube, and the vertical support for the tensioning roller tube is provided with a sliding positioning groove for the tensioning roller tube. The two ends of the tensioning roller tube are installed into the sliding positioning groove and can slide up and down along the sliding positioning groove when the tensioning roller tube is pressed down.

[0012] Furthermore, the plastic bag unwinding assembly includes a plastic bag unwinding bracket and plastic bag unwinding positioning plates located at both ends of the plastic bag unwinding bracket and limiting the installation position of the plastic bag roll.

[0013] Furthermore, the plastic bag winding assembly includes a plastic bag winding bracket and label plastic bag winding positioning plates located at both ends of the plastic bag winding bracket and limiting the installation position of the label plastic bag roll.

[0014] In summary, this utility model of a plastic bag labeling machine improves upon the traditional stacking and assembling of plastic bags by introducing a continuous, roll-type labeling method for connected plastic bags, achieving a smooth and compact automated operation for labeling. During labeling, a rigid support platform, such as a flat worktable, supports, conveys, and flattens the plastic bags, creating a level surface. The combination of a rotating scraper and labeling brush ensures the separation of the label from the label tape and that the label is smoothly and evenly adhered to the designated position on the plastic bag. A timer and speed counter are also used for precise label placement. This plastic bag labeling machine is fully automated. The automatic labeling method can reduce the labor intensity of employees, improve labeling efficiency, and change the traditional manual labeling method. It adopts a flat workbench conveyor platform to ensure flat output of plastic bags and strong rigid platform support during labeling, thereby improving labeling quality. It adopts roll-to-roll output, collection of plastic bags and labeling tape after labeling, to achieve automatic bag labeling function and quick and labor-saving operation. During labeling, the plastic bag size data is input into the timer speed counter for positioning and labeling, and the labeling position can be adjusted to achieve reliable and accurate labeling effect and the goal of automated production. Attached Figure Description

[0015] Figure 1 This is a simplified structural diagram of a plastic bag labeling machine according to Embodiment 1 of this utility model;

[0016] Figure 2 This is a simplified structural diagram of a plastic bag labeling machine without a frame, according to Embodiment 1 of this utility model.

[0017] Figure 3 yes Figure 2 A simplified structural diagram at point A in the middle;

[0018] Figure 4 This is a simplified structural diagram of the active pressure-sealing bag roller tube;

[0019] Figure 5 This is a simplified top view of the frame;

[0020] The labels in the attached diagram are as follows: 1. Frame; 2. Flat conveyor table; 3. Bag unwinding assembly; 4. Label unwinding and labeling assembly; 5. Movable bag pressing roller; 6. Fixed bag pressing roller; 7. Hollowed-out opening; 8. Conveyor tensioning roller assembly; 9. Bag winding assembly; 10. Timing speed counter; 11. Display screen; 12. Friction outer ring; 13. Label roll unwinding frame; 14. Label conveyor roller; 15. Guide tensioning roller; 16. Label conveyor tilting platform; 17. Rotary scraper; 18. Labeling brush; 19. Guide and recycle roller tube; 20. Label winding rack; 21. Conveyor guide roller tube; 22. Upper pressure roller; 23. Lower pressure roller; 24. Movable lower tightening roller tube; 25. Conveyor and outlet roller tube; 26. Tightening roller tube vertical support; 27. Tightening roller tube sliding positioning groove; 28. Plastic bag unwinding support; 29. ​​Plastic bag unwinding positioning plate; 30. Plastic bag winding support; 31. Label plastic bag winding positioning plate; 32. Protruding head; 33. Rotating wheel; 34. Brush groove notch. Detailed Implementation

[0021] Example 1

[0022] The plastic bag labeling machine described in Embodiment 1, such as Figure 1 , Figure 2 and Figure 5As shown, the machine includes a frame 1, a flat conveyor platform 2 and a perforated opening 7 mounted on the top of the frame, a bag unwinding assembly 3 and a label unwinding and labeling assembly 4 mounted on the frame and above the flat conveyor platform, a movable bag pressing roller tube 5 movably mounted at one end of the flat conveyor platform and below the bag unwinding assembly, a fixed bag pressing roller tube 6 fixedly mounted at the other end of the flat conveyor platform, a conveying and tightening roller tube assembly 8 mounted on the frame and above and inside the perforated opening, and a bag winding assembly 9 mounted on the frame and above the perforated opening. The frame also includes a timing and speed counter 10 corresponding to the conveying and tightening roller tube assembly and positioning the labeling position, and a display screen 11 showing the length of the unwound bag roll. The bags are in rolls of 500. The frame serves as the supporting frame for the entire bag labeling machine; essentially, all components of the bag labeling machine are mounted on the frame. The working principle is as follows: The plastic bag roll is installed on the plastic bag unwinding assembly. The plastic bag unwinding assembly unwinds the plastic bag strip, which is then laid flat and tightened on the flat conveyor table by the movable and fixed pressure rollers. At the same time, the label unwinding and labeling assembly unwinds the label strip and affixes the label to the labeling position on the plastic bag on the flat conveyor table. After labeling, the plastic bag strip is tightened by the conveying and tightening roller and conveyed to the plastic bag winding assembly. Finally, the plastic bag winding assembly winds the plastic bag strip to form a roll of plastic bag. During the conveying and tightening process, a timer and speed counter is set to count and control the conveying time, speed, and length of the plastic bag strip to ensure accurate labeling position. The length of the plastic bag strip is also displayed on the screen.

[0023] By employing the principles of bag unwinding, label unwinding and labeling, and bag rewinding components, along with a flat conveyor table, roll-to-roll unwinding, collection, and labeling are achieved. During labeling, the bags remain undeformed, and labels are applied smoothly without creases, achieving automated bag labeling, accurate labeling, and high-quality labeling. This reduces the labor intensity of employees and improves labeling efficiency. A timer and speed counter are used to position the labeling roll during labeling, making operation quick and labor-saving. Furthermore, the bag size is input into the timer and speed counter for precise labeling positioning, and the timer and speed counter can be adjusted to optimize the labeling position, ensuring reliable and accurate labeling and achieving automated production.

[0024] In this embodiment 1, as Figure 4As shown, the movable pressure bag roller is fitted with friction outer rings 12 at both ends, forming frictional contact with the flat conveyor table. These outer rings are rough rubber rings with a non-smooth surface and evenly distributed outward-protruding protrusions 32. This movable pressure bag roller is movably installed, allowing for easy removal and placement. When placed on the flat conveyor table, the rubber material and rough surface of the protrusions, combined with the stainless steel surface of the conveyor table, create strong friction between the roller and the conveyor table when the bag roll is pulled. This prevents the roller from sliding or shifting during bag transport, achieving both guiding and non-displacement. Furthermore, because the outer diameter of the friction outer ring is larger than the inner diameter of the roller, the bag roll is smoothly and evenly laid on the top surface of the conveyor table, ensuring smooth labeling and improved labeling quality. Finally, due to the flexible adjustability of the movable pressure bag roller, when labeling bags of different sizes, the position of the movable pressure bag roller can be adjusted accordingly to suit the labeling of bags of different sizes.

[0025] In this embodiment 1, as Figure 1 , Figure 2 and Figure 3As shown, the label unwinding and labeling assembly includes a label roll unwinding frame 13, multiple label conveying rollers 14 for conveying and guiding the unwound label tape, a guide tensioning roller 15 for guiding and tightening the conveyed label tape, a label conveying inclined platform 16 for tightly conveying the label tape, a rotating scraper 17 located at the output end of the label conveying inclined platform for separating the label and label tape, a labeling brush 18 located above the label conveying inclined platform for smoothly applying the separated label to the plastic bag below to form a label bag, a guide recovery roller 19 for guiding and recovering the separated label tape, and a label rewinding frame 20 for recovering the separated label. The plastic bag labeling is performed in a roll-to-roll collection manner. This label unwinding and labeling assembly includes unwinding, conveying, and guiding the label tape from the label roll; supporting the conveying rigid platform for the label tape; separating the label tape from the label; smoothly and accurately applying the label to the labeling position on the plastic bag; and recovering and collecting the label tape after separating the label. The working principle of this label unwinding and labeling assembly is as follows: The label roll is installed on the label roll unwinding frame and unwinds the label tape. The label tape is guided and conveyed by multiple label conveyor rollers and then guided and tensioned by guide tensioning rollers to ensure the conveyor belt has a flat and stretched label tape. The label tape is then conveyed and pressed against the top of the label conveying inclined platform, which forms a rigid and flat support, ensuring the label tape is free of folds and creases, resulting in a flat surface. When the label tape reaches the output end of the label conveying inclined platform, the label is just lifted by a rotating scraper that has rotated to this position, forming a label-label bond. Initial separation of the label tape and subsequent continued feeding of the label tape gradually increases the separation between the label and the label tape until complete separation. During this process, as the label is lifted and separated by the rotating scraper, its top surface adheres tightly to the bottom of the labeling brush and is pressed onto the labeling position of the plastic bag tape by the labeling brush. Thus, as the label continues to separate, it gradually adheres tightly to the plastic bag and is finally smoothed by the bottom of the labeling brush, achieving a flat and smooth adhesion of the label to the plastic bag. Finally, the separated label tape passes through the guide recovery roller and is ultimately collected and wound onto the label rewinding rack, achieving the recycling and collection of the label tape.

[0026] This rotating scraper is mounted on the rotating wheel 33 and rotates with the rotating wheel. The thickness of both the rotating wheel and the rotating scraper is much smaller than the width of the label and the width of the labeling brush, approximately 1 / 3 the width of the label. This ensures that the label can be scraped off and separated without being pulled out of the labeling brush by the rotating scraper. The labeling brush has a brush slot notch 34 in the middle to allow the rotating wheel and rotating scraper to pass through smoothly. The width of the labeling brush is greater than the width of the label, so that the label can be pressed down by the labeling brush and smoothly pasted onto the plastic bag.

[0027] In this embodiment 1, the conveying and tightening roller assembly includes a conveying guide roller 21 for conveying the label bag, an upper pressure roller 22 and a lower pressure roller 23 for pressing the conveyed and guided label bag, a movable lower pressure tightening roller 24 for pressing and tightening the label bag using its own gravity, and a conveying and exiting roller 25 for conveying and exiting the label bag; the timing speed counter faces the outside of the pressing lower pressure roller. After the label is affixed, the plastic bag tape is conveyed and guided by the conveyor guide roller and then enters the pressure roller assembly for pressing. The pressure roller assembly consists of an upper pressure roller and a lower pressure roller. When the plastic bag tape enters between the upper and lower pressure rollers, it is pressed by the two pressure rollers to make the label more compact and flat on the plastic bag roll, achieving a higher quality labeling effect. The plastic bag tape output from the two pressure rollers is pressed by the gravity of the movable downward tightening roller. During the labeling process of the plastic bag tape, the movable downward tightening roller can move up and down, and the tensioning effect of the plastic bag tape can be adjusted at any time, achieving the same conveying effect as the tensioning roller. Finally, the plastic bag tape is conveyed to the plastic bag unwinding assembly through the conveyor guide roller.

[0028] In this embodiment 1, the output end of the label conveying tilting platform is semi-circular and smooth. The semi-circular and smooth design allows the label strips after label separation to be conveyed along this semi-circular smooth surface to the bottom of the label conveying tilting platform and then to the guide recovery roller tube, ensuring the smooth collection of the label strips.

[0029] In this embodiment 1, the frame is further provided with a tensioning roller tube vertical support 26, and the tensioning roller tube vertical support is provided with a tensioning roller tube sliding positioning groove 27. The two ends of the movable pressing tensioning roller tube are installed into the sliding positioning groove, and the movable pressing tensioning roller tube can slide up and down along the sliding positioning groove. In order to achieve the movable lifting and lowering effect of the movable pressing tensioning roller, the tensioning roller tube vertical support and the tensioning roller tube sliding positioning groove are set so that the movable pressing collecting roller can move up and down along the tensioning roller tube sliding positioning groove, thereby achieving the purpose of flexibly adjusting the height position.

[0030] In this embodiment 1, the plastic bag unwinding assembly includes a plastic bag unwinding bracket 28 and plastic bag unwinding positioning plates 29 located at both ends of the plastic bag unwinding bracket and limiting the installation position of the plastic bag roll.

[0031] In this embodiment 1, the plastic bag winding assembly includes a plastic bag winding bracket 30 and a label plastic bag winding positioning plate 31 located at both ends of the plastic bag winding bracket and limiting the installation position of the label plastic bag roll.

[0032] In this embodiment 1, the plastic bag labeling machine improves the traditional stacking and labeling method of plastic bags into a continuous, roll-type output labeling method, realizing a continuous and compact automated operation of plastic bag output labeling. During labeling, a rigid support platform such as a flat worktable is set up to support, transport, and flatten the plastic bags to achieve a flat state. The operation of a rotating scraper and labeling brush is combined to separate the label from the label tape and ensure that the label is smoothly and evenly affixed to the designated position on the plastic bag. A timer and speed counter are also used to position the plastic bags for labeling. This plastic bag labeling machine is fully automatic. The labeling method can reduce the labor intensity of employees, improve labeling efficiency, and change the traditional manual labeling. It adopts a flat workbench conveyor platform to ensure flat output of plastic bags and strong rigid platform support during labeling, thereby improving labeling quality. It adopts roll-to-roll output, collection of plastic bags and labeling tape after labeling, to achieve automatic bag labeling function and quick and labor-saving operation. During labeling, the plastic bag size data is input into the timer speed counter for positioning and labeling, and the labeling position can be adjusted to achieve reliable and accurate labeling effect and the goal of automated production.

[0033] 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 plastic bag labeling machine, characterized in that, The system includes a frame (1), a flat conveyor platform (2) and a cutout opening (7) mounted on the top of the frame, a plastic bag unwinding assembly (3) and a label unwinding and labeling assembly (4) mounted on the frame and located above the flat conveyor platform, a movable plastic bag pressing roller tube (5) movably mounted on one end of the flat conveyor platform and located below the plastic bag unwinding assembly, a fixed plastic bag pressing roller tube (6) fixedly mounted on the other end of the flat conveyor platform, a conveying and tightening roller tube assembly (8) mounted on the frame and located above and inside the cutout opening, and a plastic bag winding assembly (9) mounted on the frame and located above the cutout opening; the frame is also equipped with a timing speed counter (10) corresponding to the conveying and tightening roller tube assembly and positioning the labeling position, and a display screen (11) displaying the length of the plastic bag roll unwound.

2. The labeling machine for plastic bags according to claim 1, characterized in that, The movable rubber bag roller tube has friction outer rings (12) that are fitted on the outer sides of both ends to form frictional contact with the flat conveyor table. The friction outer ring is a rough rubber ring with a non-glossy surface, or the friction outer ring is a rubber ring with protruding protrusions (32) evenly distributed on its surface.

3. A plastic bag labeling machine according to claim 2, characterized in that, The label unwinding and labeling assembly includes a label roll unwinding frame (13), multiple label conveying rollers (14) for conveying and guiding the unwound label tape, a guide tensioning roller (15) for guiding and tightening the conveyed label tape, a label conveying tilting platform (16) for tightly conveying the label tape, a rotating scraper (17) located at the output end of the label conveying tilting platform for separating the label and label tape, a labeling brush (18) located above the label conveying tilting platform for smoothly applying the separated label to the plastic bag below to form a label bag, a guide recovery roller (19) for guiding and recovering the separated label tape, and a label rewinding frame (20) for recovering the separated label.

4. A plastic bag labeling machine according to claim 3, characterized in that, The conveying and tightening roller assembly includes a conveying guide roller (21) for conveying the label bag, an upper pressure roller (22) and a lower pressure roller (23) for pressing the conveyed and guided label bag, a movable lower pressure tightening roller (24) for pressing and tightening the label bag using its own gravity, and a conveying and exiting roller (25) for conveying and exiting the label bag; the timing speed counter faces the outside of the pressing lower pressure roller.

5. A plastic bag labeling machine according to claim 4, characterized in that, The output end of the label conveying tilting platform is a smooth semi-circle.

6. A plastic bag labeling machine according to claim 5, characterized in that, The frame is also provided with a tensioning tube vertical support (26), and the tensioning tube vertical support is provided with a tensioning tube sliding positioning groove (27). The two ends of the tensioning tube are installed in the sliding positioning groove and can slide up and down along the sliding positioning groove when the tensioning tube is pressed down.

7. A plastic bag labeling machine according to claim 6, characterized in that, The plastic bag unwinding assembly includes a plastic bag unwinding bracket (28) and plastic bag unwinding positioning plates (29) located at both ends of the plastic bag unwinding bracket and limiting the installation position of the plastic bag roll.

8. A plastic bag labeling machine according to claim 7, characterized in that, The plastic bag winding assembly includes a plastic bag winding bracket (30) and a label plastic bag winding positioning plate (31) located at both ends of the plastic bag winding bracket and limiting the installation position of the label plastic bag roll.

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