Plastic bag roll large label rolling and pasting device

Abstract

The utility model discloses a plastic bag roll large label rolling and pasting device which comprises a machine frame, two rolling and pasting lower rollers used for bearing a bag roll are rotatably installed on the machine frame, a roll pressing frame is movably installed on the machine frame, at least one rolling and pasting upper roller used for pressing the bag roll towards the direction of the two rolling and pasting lower rollers is installed on the roll pressing frame, and the rolling and pasting lower rollers are installed on the machine frame. At least one of the rolling and pasting lower roller and the rolling and pasting upper roller is connected with a rolling and pasting driver; one side of each of the two rolling and pasting lower rollers is a rolling incoming side, the other side of each of the two rolling and pasting lower rollers is a label incoming side, and a large label is supplied between the rolling and pasting lower roller on the label incoming side and the bag roll; the rack is provided with a lifting assembly used for lifting the roll pressing frame and a roll discharging assembly used for discharging labeled bag rolls from the two roll pasting lower rollers. The full-automatic labeling machine realizes full-automatic labeling, and is simple and rapid in labeling and stable in labeling quality.

Description

Technical Field

[0001] The utility model relates to the technical field of labeling equipment, in particular to a large label roll pasting device for plastic bag rolls. Background Art

[0002] At present, in the production of plastic bags, basic operations such as unwinding, intermittent cutting, heat sealing, and winding are basically automated. After winding, the plastic bags are wound into bag rolls, and the bag rolls are formed into packages by labeling. Among them, bag roll labeling is divided into two types: small label labeling and large label labeling. Small label labeling is a labeling method in which one or two stickers are pasted at the tail of the bag roll, which only achieves the effect of preventing the bag roll from loosening; large label labeling is a labeling method in which a rectangular label paper surrounds the outer peripheral surface of the bag roll by winding around the bag roll at least once. Because more comprehensive product and manufacturer information can be reflected on the large label, and it has a protective effect on the roll, it is more and more favored by plastic bag manufacturers.

[0003] At present, the automatic labeling machines on the market are mainly small label labeling machines, and there are relatively few large label labeling machines that can be matched with the automated production of plastic bags. Among the more common ones, as Figure 6 shown, it is mainly a side label feeding type labeling machine, that is, the large label is initially in the form of a continuous label roll. After being released from the label roll, it is input from the side of the bag roll conveying path. Glue or double-sided tape is applied before input, and single-piece cutting is completed. During the process of the bag roll rolling past, the large label naturally adheres to the outer periphery of the bag roll to form a paste.

[0004] This kind of large label labeling machine still has the following deficiencies in application. First, before the wound bag roll enters the labeling machine, it is necessary to manually pre-seal the tail part of the bag roll to prevent the bag roll from loosening. Therefore, the labeling operation cannot be completely separated from manual labor, and the labor cost is relatively high. Second, the bag roll labeling is divided into two steps: sealing and large label pasting. The process is not only relatively complex, but also the sealing step will generate additional equipment and material costs. Third, the pasting process relies on the self-rolling of the bag roll to form the paste, and the paste will be skewed, fluffy, etc., and the labeling quality is unstable. Therefore, it is necessary to provide a simple, fast and stable labeling quality full-automatic labeling method to improve the above situation. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a large label roll pasting device for plastic bag rolls that realizes full-automatic labeling, is simple and fast in labeling, and has stable labeling quality.

[0006] To solve the above technical problems, the technical solution of the present utility model is: a large label winding and pasting device for plastic bags, including a frame. On the frame, two winding and pasting lower rollers for supporting the bag roll are rotatably installed. On the frame, a pressing roll frame is movably installed. On the pressing roll frame, at least one winding and pasting upper roller for pressing the bag roll towards the two winding and pasting lower rollers is installed. At least one of the winding and pasting lower roller and the winding and pasting upper roller is connected to a winding and pasting driver; one side of the two winding and pasting lower rollers is the incoming roll side and the other side is the incoming label side. Between the winding and pasting lower roller on the incoming label side and the bag roll is used for feeding in large labels; on the frame, a lifting component for lifting the pressing roll frame and an outgoing roll component for sending out the bag roll after labeling from the two winding and pasting lower rollers are installed.

[0007] As a preferred technical solution, the winding and pasting driver includes a lower roller driver and an upper roller driver. The power end of the lower roller driver is power-connected to the winding and pasting lower roller on the incoming roll side, and the upper roller driver is power-connected to one of the winding and pasting upper rollers.

[0008] As a preferred technical solution, the linear velocity of the winding and pasting upper roller connected with power is greater than the linear velocity of the winding and pasting lower roller connected with power.

[0009] As a preferred technical solution, the outgoing roll component includes an outgoing roll driving cylinder fixedly installed on the frame. On the driving end of the outgoing roll driving cylinder, an outgoing roll pushing inclined plate is installed. The outgoing roll pushing inclined plate is used for pushing up the bag roll from between the two winding and pasting lower rollers.

[0010] As a preferred technical solution, the lifting component includes a lifting driving cylinder fixedly installed on the frame. On the driving end of the lifting driving cylinder, a lifting member located below the pressing roll frame is fixedly provided. The lifting member is used for lifting the pressing roll frame.

[0011] As a preferred technical solution, the pressing roll frame is swingably installed on the frame, and the winding and pasting upper roller is installed at the free end of the pressing roll frame.

[0012] Due to the adoption of the above technical solution, a large label rolling device for plastic bag rolls includes a frame, two rolling lower rollers for supporting the bag roll are rotatably mounted on the frame, a roll pressing frame is movably mounted on the frame, at least one rolling upper roller for pressing the bag roll toward the two rolling lower rollers is mounted on the rolling pressing frame, at least one of the rolling lower roller and the rolling upper roller is connected to a rolling driver; one side of the two rolling lower rollers is a roll-in side and the other side is a label-in side, and a large label is fed between the rolling lower roller on the label-in side and the bag roll; a lifting component for lifting the roll pressing frame and a roll-out component for sending the labeled bag roll from the two rolling lower rollers are mounted on the frame. When working, the bag roll rolls from the rolling side to the two rolling lower rollers, the roll pressing frame descends, the rolling upper roller and the rolling lower roller jointly clamp the bag roll, and after the rolling driver is driven, the bag roll starts to roll. The large label is supplied horizontally from the incoming label side by the label supply component, and after reaching the lower roll roller, it is rolled in between the bag roll and the lower roll roller on the incoming label side. The colloid at the front end of the roll is automatically attached to the outer peripheral surface of the bag roll, and the remaining part of the large label is automatically rolled in during the continuous rolling of the bag roll. Finally, the large label is attached to the outer peripheral surface of the bag roll, realizing fully automated labeling. The roll driver stops driving, the roll pressing frame rises, and the roll-out component delivers the labeled bag roll from between the two lower roll rollers. The entire labeling process is simple and fast, and the bag roll realizes large label rolling by actively rolling and pulling the large label. It is not easy to have labeling deviation and fluffiness, and the labeling quality is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0014] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model;

[0015] Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure from another perspective;

[0016] Figure 3 This is a schematic diagram of the bag roll before it is rolled into the two rolls and pasted to the lower rollers in the embodiment of the utility model;

[0017] Figure 4 This is a schematic diagram of the bag roll-up and pasting process of the utility model embodiment;

[0018] Figure 5 This is a schematic diagram of the bag roll output in the embodiment of the utility model;

[0019] Figure 6 It is the principle diagram of the existing side-feed labeling machine.

[0020] In the figure: 1 - frame; 11 - lower roll for coiling and pasting; 12 - coil pressing frame; 13 - upper roll for coiling and pasting; 14 - coiling and pasting driver; 15 - lower roll driver; 16 - upper roll driver; 2 - lifting assembly; 21 - lifting driving cylinder; 22 - lifting member; 3 - coil discharging assembly; 31 - coil discharging driving cylinder; 32 - coil discharging pushing inclined plate; 7 - large label; 8 - inclined table; 9 - plastic bag coil; 91 - bag tail. Detailed implementation manner

[0021] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments. In the following detailed description, only some exemplary embodiments of the present utility model are described by way of illustration. It is undoubted that those of ordinary skill in the art can recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the present utility model. Therefore, the drawings and the description are illustrative in nature and are not used to limit the protection scope of the claims.

[0022] As Figures 1 to 5 As commonly shown, the large label coiling and pasting device for plastic bag coils includes a frame 1. Two lower rolls for coiling and pasting 11 for supporting the plastic bag coil 9 are rotatably installed on the frame 1. The cylindrical plastic bag coil 9 freely rests between the two lower rolls for coiling and pasting 11 to form the above support. A coil pressing frame 12 is movably installed on the frame 1. At least one upper roll for coiling and pasting 13 for pressing the plastic bag coil 9 towards the two lower rolls for coiling and pasting 11 is installed on the coil pressing frame 12. At least one of the lower roll for coiling and pasting 11 and the upper roll for coiling and pasting 13 is connected to a coiling and pasting driver 14. After the plastic bag coil 9 is supported on the two lower rolls for coiling and pasting 11, the coil pressing frame 12 descends, and the upper roll for coiling and pasting 13 and the lower roll for coiling and pasting 11 jointly form a clamping of the plastic bag coil 9. When the coiling and pasting driver 14 drives and rotates, the plastic bag coil 9 generates a rolling action.

[0023] One side of the two lower rolls for coiling and pasting 11 is the incoming coil side and the other side is the incoming label side. Conventionally, an inclined table 8 for guiding the plastic bag coil 9 from the upstream winding mechanism to the two lower rolls for coiling and pasting 11 is provided on the incoming coil side. The formed plastic bag coil 9 rolls onto the two lower rolls for coiling and pasting 11 through this inclined table 8. Of course, during the rolling process, the bag tail 91 on the plastic bag coil 9 is on the lagging side relative to the rolling rotation direction of the plastic bag coil 9 itself to prevent the plastic bag coil 9 from becoming loose during rolling. A large label 7 is supplied between the lower roll for coiling and pasting 11 on the incoming label side and the plastic bag coil 9. During the driving and rolling of the plastic bag coil 9, the supplied large label 7 is automatically wound around the plastic bag coil 9 to form coiling and pasting.

[0024] Among them, the lower winding and pasting roller 11 and the upper winding and pasting roller 13 can be individually configured with driving power, or both can be configured with driving power, and both can achieve the rolling drive of the bag roll 9. Therefore, as long as one of the lower winding and pasting roller 11 and the upper winding and pasting roller 13 is connected with a driving power configuration method, it should be within the protection scope of the present utility model.

[0025] This embodiment provides one of the preferred power configuration methods, specifically: the winding and pasting driver 14 includes a lower roller driver 15 and an upper roller driver 16. The power end of the lower roller driver 15 is power-connected to the lower winding and pasting roller 11 on the incoming roll side, and the upper roller driver 16 is power-connected to one of the upper winding and pasting rollers 13. Thus, this embodiment preferably adopts the method of configuring power both above and below to achieve reliable rolling drive, and the lower winding and pasting roller 11 on the incoming label side forms driven rotation, which can reduce the resistance during the rolling of the bag roll 9 and ensure the smooth progress of winding and pasting. Among them, the lower roller driver 15 and the upper roller driver 16 are driving structures directly driven by a motor or driven in cooperation with a transmission by a motor, which are conventional technical means and will not be elaborated here. In addition, for only one upper winding and pasting roller 13 in this embodiment, the upper roller driver 16 is directly power-connected to this upper winding and pasting roller 13.

[0026] More preferably, the linear velocity of the upper winding and pasting roller 13 connected with power is greater than the linear velocity of the lower winding and pasting roller 11 connected with power. Thus, the upper winding and pasting roller 13 connected with power can further tighten the bag roll 9 itself and the bag roll 9 during the winding and pasting process relative to the lower winding and pasting roller 11 connected with power. At this time, the lower winding and pasting roller 11 that rotates driven on the incoming label side can additionally play a role in balancing the above linear velocity difference and avoid the bag roll 9 breaking away between the upper and lower rollers due to the above velocity difference.

[0027] The pressing roll frame 12 in this embodiment can be vertically movably installed on the frame 1, or can be swingably installed on the frame 1. This embodiment is illustrated by the latter. At this time, the upper winding and pasting roller 13 is installed at the free end of the pressing roll frame 12. The pressing roll frame 12 and the upper winding and pasting roller 13 form the pressing of the bag roll 9 only by their own gravity, and the pressing force is small, which can avoid over-pressing and collapsing the bag roll 9 and affecting the normal progress of winding and pasting.

[0028] In this structure, the upper roller driver 16 and the lower roller driver 15 can be separately arranged, or the upper roller driver 16 can also be used as the lower roller driver 15. When considering the combined use, the motor power shaft of the upper roller driver 16 should be coaxially arranged with the swing shaft of the pressing roll frame 12, and the power shaft of the motor in the upper roller driver 16 is chain-driven with the upper winding and pasting roller 13 and the lower winding and pasting roller 11 that need to be connected with power at the same time.

[0029] A lifting assembly 2 for lifting the coil pressing frame 12 is installed on the frame 1. The lifting assembly 2 is used to lift the coil pressing frame 12 when the bag coil 9 enters and exits the two coil sticking lower rollers 11, so as to avoid the coil sticking upper roller 13 from obstructing the entry and exit of the bag coil 9. In this embodiment, the lifting assembly 2 includes a lifting driving cylinder 21 fixedly installed on the frame 1. A lifting member 22 located below the coil pressing frame 12 is fixedly provided at the driving end of the lifting driving cylinder 21. The lifting member 22 is used to lift the coil pressing frame 12. When the coil sticking upper roller 13 presses down on the bag coil 9, the lifting member 22 does not contact the coil pressing frame 12 to ensure the pressing effect of the coil sticking upper roller 13. When it is necessary to lift the coil sticking upper roller 13, the lifting driving cylinder 21 drives the lifting member 22 to lift the coil pressing frame 12.

[0030] An uncoiling assembly 3 for sending out the labeled bag coil 9 from the two coil sticking lower rollers 11 is installed on the frame 1. In this embodiment, the uncoiling assembly 3 includes an uncoiling driving cylinder 31 fixedly installed on the frame 1. An uncoiling pushing inclined plate 32 is installed at the driving end of the uncoiling driving cylinder 31. The uncoiling pushing inclined plate 32 is used to push up the bag coil 9 upward from between the two coil sticking lower rollers 11. The specific pushing principle is that when the uncoiling pushing inclined plate 32 extends upward between the two coil sticking lower rollers 11, the upper end of the uncoiling pushing inclined plate 32 first contacts one side of the bottom of the bag coil 9. When the uncoiling pushing inclined plate 32 continues to extend upward, the uncoiling pushing inclined plate 32 is equivalent to lifting the bag coil 9 from one side until it can cross the other coil sticking lower roller 11 and achieve free falling out. Among them, the inclination direction of the uncoiling pushing inclined plate 32 can be selected according to which coil sticking lower roller 11 it needs to fall out from, and no limitation is made here.

[0031] In addition, an end positioning structure for positioning the two ends of the bag coil 9 should also be provided on the frame 1. It can be an end baffle separately provided at the coil sticking lower roller 11 in this embodiment, or formed by extending the side baffle at the upstream inclined table 8 to the coil sticking lower roller 11. No limitation is made here and it is not shown in the figure.

[0032] In this embodiment, the front end of the large label 7 close to the two coil sticking lower rollers 11 is taken as the front end, and the end far from the two coil sticking lower rollers 11 is taken as the rear end to clearly illustrate the structural principle. Conventionally, colloids are provided at both the front end and the rear end of a single large label 7. The colloid at the front end is used to enable the large label 7 to be first pasted on the bag coil 9, and the colloid at the rear end is used to form a seal after the large label 7 is completely wound around the bag coil 9. The specific working principle is as follows.

[0033] As Figure 3As shown, in this embodiment, before the bag roll 9 enters, the roll pressing frame 12 is driven by the lifting assembly 2 to remain in a raised state, the upper roll-applying roller 13 leaves the two lower roll-applying rollers 11, and the wound bag roll 9 is guided by the upstream ramp 8 and rolled onto the two lower roll-applying rollers 11. Of course, during this rolling process, the bag tail 91 on the bag roll 9 lags along its rolling direction to prevent the bag roll 9 from becoming loose during the rolling process.

[0034] like Figure 4 As shown, the lifting assembly 2 drives the lifting member 22 to retract, the upper roll 13 is pressed against the bag roll 9, and the upper roll 13 and the lower roll 11 together clamp the bag roll 9. After the roll driver 14 is driven, the bag roll 9 rolls, and the rolling rotation direction of the bag roll 9 at this time is consistent with the rolling rotation direction of the entry process, that is, the upper roll 13 and the lower roll 11 rotate in the opposite direction to the bag roll 9, so as to adapt to the rolling of the bag roll 9 to form a continuous rolling effect, and help to prevent the bag roll 9 from loosening.

[0035] The glued large label 7 is supplied to the lower winding roller 11 in a horizontal posture, and the front end of the large label 7 enters between the bag roll 9 and the lower winding roller 11 on the label side. The front end of the large label 7 is reliably adhered to the outer peripheral surface of the bag roll 9 under the clamping action. As the bag roll 9 continues to rotate, the bag roll 9 can pull the remaining part of the large label 7 to form an automatic winding. During the automatic winding process, the linear speed of the upper winding roller 13 connected to the power is greater than the linear speed of the lower winding roller 11 connected to the power, and the large label 7 is tightened during the winding process. Finally, when the rear end of the large label 7 is also attached to the bag roll 9, the large label 7 is rolled on the bag roll 9 in a relatively tight state.

[0036] like Figure 5 As shown, after pasting, the lifting assembly 2 drives the roll pressing frame 12 to rise again, the upper roll-pasting roller 13 leaves the bag roll 9, and after the roll-out assembly 3 pushes the bag roll 9 upward, the bag roll 9 falls out from one of the lower roll-pasting rollers 11, and the bag roll 9 is output. Then, wait for a new bag roll 9 to roll onto the two lower roll-pasting rollers 11, and repeat the above-mentioned rolling and pasting action.

[0037] This embodiment is based on the rolling rotation mode of the bag tail 91 of the bag roll 9 on the lagging side, driving the bag roll 9 to actively roll in the same direction, so that when the bag roll 9 is not loose, the label can be quickly supplied to form a fast rolling and pasting, and the large label 7 can be automatically closely pasted during the rolling and pasting process, and it is not easy to have labeling deviation and fluffy, and the labeling quality is stable. After labeling, the bag roll 9 is quickly output through ejection, and the labeling is fully automated. The labeling action of the large label 7 of a bag roll 9 can be completed in 3 to 4 seconds. The labeling is simple and fast, and can be used in matching the automated production of plastic bags.

[0038] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and what is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A plastic bag roll labeling device, including a frame, characterized in that: Two lower rolling rollers for supporting the bag roll are rotatably mounted on the frame, a roll pressing frame is movably mounted on the frame, at least one upper rolling roller for pressing the bag roll toward the two lower rolling rollers is mounted on the roll pressing frame, at least one of the lower rolling roller and the upper rolling roller is connected to a rolling driver; one side of the two lower rolling rollers is a roll-incoming side and the other side is a label-incoming side, and a large label is fed between the lower rolling roller on the label-incoming side and the bag roll; a lifting assembly for lifting the roll pressing frame and a roll-out assembly for delivering the labeled bag roll from the two lower rolling rollers are mounted on the frame.

2. The large label rolling device for plastic bags as claimed in claim 1, characterized in that: The rolling and pasting driver comprises a lower roller driver and an upper roller driver, wherein the power end of the lower roller driver is dynamically connected to the rolling and pasting lower roller on the incoming roll side, and the upper roller driver is dynamically connected to one of the rolling and pasting upper rollers.

3. The large label rolling device for plastic bags as claimed in claim 1, characterized in that: The linear speed of the powered upper rolling roller is greater than the linear speed of the powered lower rolling roller.

4. The large label rolling device for plastic bags as claimed in claim 1, characterized in that: The unwinding assembly comprises an unwinding drive cylinder fixedly mounted on the frame, a drive end of the unwinding drive cylinder being provided with an unwinding push inclined plate, and the unwinding push inclined plate being used for pushing the bag roll upwards from between the two roll-sticking lower rollers.

5. The large label rolling device for plastic bags as claimed in claim 1, characterized in that: The lifting assembly includes a lifting drive cylinder fixedly mounted on the frame, a lifting member located below the roll pressing frame is fixedly provided on the driving end of the lifting drive cylinder, and the lifting member is used to lift the roll pressing frame.

6. The large label rolling device for plastic bags as claimed in claim 1, characterized in that: The roll pressing frame is swingably mounted on the frame, and the roll-sticking upper roller is mounted at the free end of the roll pressing frame.

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