Paper feeding device of labeling machine

Abstract

The utility model provides a paper feeding device of a labeling machine. The paper feeding device consists of a paper placing frame and a manipulator, a mounting plate of the manipulator can move up and down and back and forth, and is provided with a gluing assembly capable of moving left and right, a suction cup assembly and a paper pressing strip. A paper feeding frame capable of moving back and forth is arranged in front of the paper placing frame, and a pressing roller capable of moving up and down is arranged in front of the paper feeding frame. The device has the advantages that the automation degree is high, all the components cooperate to achieve automatic paper feeding and labeling, and the production efficiency is improved; 2, the precision is high, the manipulator accurately positions and grabs, the gluing is accurate, the compression roller accurately rotates, the separation assembly ensures single-piece taking, and the labeling quality is improved; the adaptability is high, a paper surrounding plate of the paper placing frame, a suction cup assembly, a gluing assembly and the like can be adjusted, and the paper arranging function of the paper feeding frame adapts to different label paper; the reliability is high, and stable operation is ensured through an advanced mechanical structure and a control technology. The utility model provides an efficient, accurate and reliable solution for the labeling link in the plastic film bag making industry, and has a wide prospect.

Description

TECHNICAL FIELD

[0001] The utility model relates to bag making machine technical field, specifically relates to a paper feeding device of labeling machine. BACKGROUND

[0002] In today's industrial production field, plastic film bag making technology has made remarkable development. In the processing of plastic film bag making machine, each link is constantly pursuing higher efficiency and quality.

[0003] Among them, the last process is to roll the flat bag into a specified number of small rolls through the reel. Just like the garbage bags we use in our daily life, and the packaging bags used in supermarkets, etc., are all made through this process. The mechanized production in this stage has been relatively mature, which can stably roll the specified number of bags, greatly improving the production efficiency.

[0004] However, in the last labeling step, the realization of mechanized production faces many challenges.

[0005] Possible deficiencies of existing labeling machines:

[0006] Labeling precision problem: Some labeling machines in existing technology may have deficiencies in labeling precision. For example, the position of the label may deviate, affecting the appearance quality of the product. For the plastic film bag making industry, the accuracy of the label position is crucial, because inaccurate labeling may lead to consumer misunderstanding of product information.

[0007] Labeling speed problem: In the context of large-scale production, labeling speed is a key factor. The speed of some existing labeling machines may not meet the high production needs of the plastic film bag making industry. This not only affects the efficiency of the entire production line, but also increases production costs.

[0008] Applicability problem: Different specifications and materials of bags have different requirements for labeling machines. Existing labeling machines may have limitations in applicability and cannot adapt to various types of plastic film bags. For example, for some special-shaped or material bags, the labeling machine may not work properly.

[0009] Compatibility problem with bag making machine: Labeling machines need to closely cooperate with plastic film bag making machines to achieve efficient production processes. However, the compatibility of existing labeling machines with bag making machines may not be ideal. This may lead to incoordination in the production process, affecting overall production efficiency.

[0010] Before the label paper is pasted with the film bag, the label paper needs to be glued. How to efficiently and high-quality glue is a problem to be solved. The current gluing method may have the following deficiencies:

[0011] Uneven glue application: If the glue is not applied evenly, it can cause the label to be not firmly attached and easily fall off. This not only affects product quality, but also may bring inconvenience to consumers. For example, during use, the label may fall off due to poor adhesion, affecting consumers' access to product information.

[0012] Low efficiency of glue application: Traditional glue application methods may be inefficient and unable to meet the needs of mass production. This will prolong the production cycle and increase production costs. For example, some glue application equipment may take a long time to complete the glue application process, affecting the overall speed of the production line.

[0013] The plastic film bag industry has an urgent need for mechanized production in the labeling process. On the one hand, with the intensification of market competition, enterprises need to improve production efficiency and reduce costs to improve the competitiveness of products. On the other hand, consumers have increasingly high requirements for product quality and appearance, and accurate and beautiful labels can enhance the brand image and market value of products.

[0014] Therefore, how to provide a labeling machine that is different from the prior art to better adapt to the needs of the plastic film bag industry and achieve efficient and accurate labeling operation, especially to solve the problems in the label paper glue application process, has become a current problem to be solved. This new type of labeling machine needs to make breakthroughs in labeling precision, speed, applicability, and compatibility with bag making machines, while ensuring the efficiency and quality of label paper glue application, providing strong support for the development of the plastic film bag industry. Invention content

[0015] To solve the problems in the background art, the present application provides a paper feeding device for a labeling machine to solve the above technical problems.

[0016] The technical scheme of the present application is as follows:

[0017] A paper feeding device for a labeling machine, comprising a paper holder and a mechanical hand, wherein the mechanical hand is arranged above the paper holder,

[0018] The mechanical hand comprises a mounting plate, which can move up and down and move forward and backward;

[0019] The front and rear sides of the mounting plate are respectively provided with glue application assemblies, which can move left and right to apply glue;

[0020] The front and rear sides of the mounting plate are respectively provided with suction cup assemblies;

[0021] The front and rear sides of the mounting plate are respectively provided with paper pressing strips;

[0022] The front side of the paper placing frame is provided with a paper feeding frame which can move forward and backward, and the front side of the paper feeding frame is provided with a pressure roller which can move up and down.

[0023] The paper feeding frame is further provided with through grooves penetrating through the upper and lower sides of the paper feeding frame, the through grooves are provided in plurality and are arranged in the front and back direction, the upper side of the left side of the paper feeding frame is provided with a fixed paper straightening strip arranged in the front and back direction, the lower side of the right side of the paper feeding frame is provided with a movable paper straightening strip arranged in the front and back direction, the movable paper straightening strip can move left and right, the movable paper straightening strip is provided with a paper straightening arm extending upward, and the paper straightening arm extends to the upper side of the paper feeding frame through the through grooves.

[0024] The utility model further sets up, still include the movable frame that can move forward and backward, the paper feeding frame fixedly arranged on the movable frame, the left and right sides of the front end of movable frame are equipped with moving block respectively, the both ends of pressure roller are rotatedly connected with two moving blocks respectively, the left and right sides of the front end of movable frame are equipped with cylinder no.

[0025] The utility model further sets up, the installation board includes intermediate plate, the left and right sides of intermediate plate are connected with front connecting plate and rear connecting plate respectively, front connecting plate and rear connecting plate are connected with sucking disc subassembly, paper pressing strip, gluing subassembly respectively, two sucking disc subassembly are located in the region between two paper pressing strips, two paper pressing strips are located in the region between two gluing subassembly, the upper side of intermediate plate is equipped with upper connecting plate, upper connecting plate is equipped with cylinder no.

[0026] The utility model further sets up, gluing subassembly includes mounting block, the mounting block is connected with gluing sprayer head, the left and right sides of front connecting plate and rear connecting plate are equipped with cylinder no.

[0027] The utility model further sets up, still include the first sliding rail that sets up along the front and back direction, the first sliding rail is connected with first sliding block of sliding, the upper connecting plate with first sliding block is fixed connection.

[0028] The utility model further sets up, still include the second sliding rail that sets up along the front and back direction, the second sliding rail is connected with second sliding block of sliding, the movable frame with first sliding block is fixed connection.

[0029] The utility model further sets up, sucking disc subassembly includes vacuum sucking disc, the vacuum sucking disc can be adjusted position in the front and back direction.

[0030] The utility model further sets up, the front connecting plate and rear connecting plate can be position adjusted in front -back direction.

[0031] The utility model further sets up, the paper frame includes tray, the middle of tray is paper area, the four sides of paper area's front and back left and right are equipped with adjustable paper board.

[0032] Adopt above-mentioned technical scheme, the beneficial effect of the utility model is:

[0033] First, the automation degree is high. Through the collaborative work of the mechanical hand, the paper feeder, the compression roller and each component, automatic paper feeding and label sticking of the label paper are realized, manual intervention is greatly reduced, and production efficiency is improved.

[0034] Second, the precision is high. The high-precision positioning and grabbing capacity of the mechanical hand, the accurate glue coating of the glue coating component, the accurate compression and rotation of the compression roller and the separation component ensure that only one label paper is taken each time, which together ensures that the label paper can be accurately pasted on the film bag, and the label sticking quality is improved.

[0035] Third, the adaptability is strong. The paper board of the paper feeder can be moved and adjusted to adapt to label papers of different specifications; the suction cup component, the glue coating component, the connecting plate and the like can be position adjusted; and the whole paper function of the paper feeder can also adapt to label papers in different states. These designs enhance the adaptability of the paper feeding device to label papers of different specifications and materials.

[0036] Finally, the reliability is high. Advanced mechanical structures and control technologies are adopted, such as the ingenious design of the separation component and the accurate driving of each component, which ensures the stable operation of the paper feeding device and reduces the probability of failure. The patent provides an efficient, accurate and reliable solution for the label sticking link in the plastic film bag making industry, and has broad application prospect and development potential. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0038] Figure 1 Structure diagram of the utility model Figure One .

[0039] Figure 2 Structure diagram of the utility model Figure Two .

[0040] Figure 3The structure schematic diagram of the paper placing frame of the utility model is shown in the figure.

[0041] Figure 4 The structure schematic diagram of the paper placing frame of the utility model is shown in the figure.

[0042] Figure 5 The structure schematic diagram of the utility model mechanical hand is shown in the figure Figure One .

[0043] Figure 6 The structure schematic diagram of the utility model mechanical hand is shown in the figure Figure Two .

[0044] Figure 7 The structure schematic diagram of the paper placing frame of the utility model is shown in the figure. Figure One

[0045] Figure 8 The structure schematic diagram of the paper placing frame of the utility model is shown in the figure. Figure Two .

[0046] Figure 9 The structure schematic diagram of the utility model separation assembly is shown in the figure. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0048] The utility model is described as follows Figures 1-9 The utility model is described as follows

[0049] Embodiment: a paper feeding device of a labeling machine, comprising a paper placing frame 1 and a mechanical hand 2, the mechanical hand 2 is arranged above the paper placing frame 1, the paper placing frame 1 is used for placing label paper, and the mechanical hand 2 is used for taking the label paper on the paper placing frame 1. The front side of the paper placing frame 1 is provided with a paper feeding frame 4 that can move forward and backward, and the mechanical hand 2 takes one label paper each time and moves and places the label paper on the paper feeding frame 4. The paper moves with the paper feeding frame 4 and is pasted with a rolled film bag, and the labeling is completed.

[0050] The paper placing frame 1 is mainly used for placing label paper. It provides a stable storage position for the label paper, and ensures that the label paper can be taken at any time during the labeling process.

[0051] The mechanical hand 2 is arranged above the paper placing frame 1 and is one of the core components of the paper feeding device. It has the following main functions:

[0052] ​Taking the label paper: The mechanical hand can accurately take the label paper on the paper holder.

[0053] Moving the label paper: The mechanical hand can move the taken label paper to the designated position. In this paper feeding device, the mechanical hand needs to perform a series of complex movement operations. First, the mechanical hand moves downward, takes the label paper, and then moves upward. Then, it moves forward to the position of the paper feeding rack 4, and then moves downward to place the label paper on the paper feeding rack 4. Then, the mechanical hand moves upward again, moves backward, and moves to the upper side of the paper holder 1, and so on. These movement operations require the mechanical hand to have precise motion control capability to ensure that the label paper can be accurately placed on the paper feeding rack.

[0054] Speed and efficiency: In order to meet the needs of efficient production, the moving speed of the mechanical hand must be fast enough. At the same time, the operation process of the mechanical hand should be as simple and efficient as possible, reducing unnecessary actions and time waste. For example, the working efficiency of the mechanical hand can be improved by optimizing the motion trajectory and control algorithm of the mechanical hand.

[0055] The front side of the paper holder 1 is provided with a paper feeding rack 4 that can move forward and backward. The paper feeding rack 4 plays an important role in the labeling process:

[0056] Receiving label paper: The mechanical hand places the taken label paper on the paper feeding rack 4. The paper feeding rack 4 needs to have a flat surface and appropriate fixing device to ensure that the label paper can be stably placed on it.

[0057] Moving the label paper: The paper feeding rack 4 can move forward and backward to transport the label paper to the position for sticking with the rolled film bag. The moving speed and precision of the paper feeding rack need to match the production rhythm of the entire labeling machine. The movement of the paper feeding rack can be controlled by motor, transmission device, etc. to ensure that the label paper can accurately reach the sticking position.

[0058] Coordination with other components: The paper feeding rack 4 needs to cooperate well with the mechanical hand and other components of the labeling machine. For example, the movement trajectory of the paper feeding rack should be adapted to the operation range of the mechanical hand to ensure that the mechanical hand can smoothly place the label paper on the paper feeding rack. At the same time, the moving speed of the paper feeding rack should also be coordinated with the conveying speed of the film bag to ensure the smooth progress of the labeling process.

[0059] In summary, the paper feeding device of this labeling machine realizes the automatic paper feeding function of the label paper through the cooperation of the paper holder 1, the mechanical hand 2 and the paper feeding rack 4. In practical application, this paper feeding device can greatly improve the production efficiency and labeling accuracy of the labeling machine, providing strong support for the mechanized production of the plastic film bag industry.

[0060] The working process of the labeling machine paper feeding device is relatively complex, but it is efficient and accurate. The following is a further detailed description of its working process:

[0061] Initial state: The manipulator 2 is above the paper holder 1, and the paper feeding frame 4 is in the initial position, waiting to receive the label paper.

[0062] Manipulator takes label paper: The manipulator 2 moves down and accurately positions the label paper on the paper holder 1. Through the suction cup, it firmly takes a label paper. This process requires high-precision positioning and grasping ability to ensure that only one label paper is taken each time.

[0063] Manipulator moves above the paper feeding frame: After taking the label paper, the manipulator 2 moves up to avoid collision with the paper holder 1. Then, it moves forward towards the direction of the paper feeding frame 4. This process requires precise motion control to ensure that the manipulator can accurately reach the position above the paper feeding frame 4.

[0064] Place the label paper on the paper feeding frame: The manipulator 2 moves down again to accurately place the taken label paper on the paper feeding frame 4.

[0065] Manipulator returns to the initial position: After placing the label paper, the manipulator 2 moves up and away from the paper feeding frame 4. Then, it moves back to the upper side of the paper holder 1, preparing for the next taking operation.

[0066] Paper feeding frame moves: While the manipulator returns to the initial position, the paper feeding frame 4 starts to move forward and backward. It transports the label paper to the position where it is pasted on the rolled film bag. The movement speed and trajectory of the paper feeding frame need to match the transport speed and pasting position of the film bag to ensure that the label can be accurately pasted on the film bag.

[0067] Repeat the cycle: When the paper feeding frame 4 completes a paper feeding task, the manipulator 2 starts a new round of label paper taking, moving and placing operations, while the paper feeding frame 4 is ready to receive the next label paper and perform the next movement. This cycle continues to realize a continuous labeling and paper feeding process.

[0068] The paper holder 1 includes a tray 11, which is horizontally arranged, and the middle of the tray 11 is the area for placing label paper. A stack of label paper is placed on the tray 11, and the paper holder 1 is mainly used for placing label paper. It provides a stable storage location for label paper, ensuring that label paper can be taken at any time during the labeling process.

[0069] The four sides of the paper placing area are respectively provided with movable and adjustable paper surrounding boards 12. The main function of the paper surrounding boards is to limit the label paper to avoid movement of the label paper on the tray. The paper surrounding boards can effectively prevent the label paper from moving during transportation or operation, thereby ensuring that the mechanical hand can accurately take the label paper. The paper surrounding boards 12 can be moved and adjusted in position according to the size of the label paper. This design enables the paper placing rack 1 to adapt to label papers of different sizes, thereby improving the versatility of the paper feeding device. For example, when a smaller size label paper needs to be placed, the paper surrounding boards can be moved inward to reduce the placement area; when a larger size label paper needs to be placed, the paper surrounding boards can be moved outward to expand the placement area. The movement and adjustment of the paper surrounding boards 12 can be achieved in various ways, such as sliding rails, screw adjustment, etc.

[0070] The mechanical hand 2 includes a mounting plate that can move up and down and front and back. This multi-directional movement capability enables the mechanical hand to accurately reach different positions to complete operations such as taking, gluing, and placing label paper. The movement of the mounting plate can be achieved through motors, transmission devices, etc. The design of the mounting plate should consider its load capacity and stability. It needs to be able to withstand the weight of components such as the paper pressing strip 3, the gluing assembly 6, and the suction cup assembly 7, and remain stable during movement. The mounting plate can be made of a strong metal material and can be reinforced with ribs and other structures to improve its strength and rigidity.

[0071] The front and back sides of the mounting plate are respectively provided with paper pressing strips 3; when the mounting plate moves downward, the paper pressing strips 3 come into contact with the label paper and press it. The function of the paper pressing strips is to fix the label paper during gluing to prevent the label paper from moving and ensure the accuracy of gluing. The paper pressing strips can be made of soft materials such as rubber or silicone to avoid damaging the label paper. When the mounting plate moves downward, the paper pressing strips 3 can accurately contact the label paper and apply appropriate pressure. After gluing is completed, the mounting plate moves upward and the paper pressing strips 3 also move away from the label paper.

[0072] The front and back sides of the mounting plate are respectively provided with gluing assemblies 6 that can move left and right to apply glue; after the paper pressing strips 3 press the label paper, the gluing assemblies 6 move left and right to apply glue to the front and back ends of the upper side of the label paper. The design of the gluing assemblies needs to consider factors such as the type of glue, the control of the amount of glue, and the uniformity of gluing.

[0073] The front and back sides of the mounting plate are respectively provided with suction cup assemblies 7; after gluing is completed, the suction cup assemblies 7 suck the label paper, and then the mounting plate moves upward to send the label paper to the paper feeding rack 4. This process requires precise motion control to ensure that the label paper can be accurately placed on the paper feeding rack.

[0074] The front side of the paper feeding frame 4 is provided with a pressure roller 5 that can move up and down. The paper feeding frame 4 moves forward to approach the roll of film bags on the rotating shaft. The pressure roller 5 moves up to abut against the film bags, pressing and clamping the label paper between the pressure roller 5 and the film bags. At this time, the front end of the label paper is pasted to the film bags through the glue on it. The film bags rotate, and the pressure roller 5 rotates with them. With the rotation of the film bags, the label paper is wound on the film bags until the rear end of the label paper is pasted and fixed to the film bags. The labeling of the label paper is completed.

[0075] The paper feeding frame 4 can move forward and backward to deliver the label paper to the position for pasting to the roll of film bags. The moving speed and accuracy of the paper feeding frame need to match the production rhythm of the entire labeling machine.

[0076] When the paper feeding frame 4 moves forward, the pressure roller 5 can accurately abut against the film bags and apply appropriate pressure. The rotation of the pressure roller 5 needs to be synchronized with the rotation of the film bags to ensure that the label paper can be smoothly wound on the film bags.

[0077] The mounting plate includes a horizontally arranged middle plate 21, which serves as the core part of the mounting plate and plays an important role in connecting the front and rear components and carrying other components. It provides a stable mounting base for the front connecting plate 22 and the rear connecting plate 23, ensuring the stability of the entire mechanical hand structure.

[0078] The front and rear sides of the middle plate 21 are respectively connected with the front connecting plate 22 and the rear connecting plate 23. The two connecting plates are respectively connected with the suction cup assembly 7, the paper pressing strip 3, and the glue applying assembly 6. The design of the front and rear connecting plates allows the components to be reasonably distributed on the mounting plate and work cooperatively.

[0079] The front and rear connecting plates 22 and 23 are respectively connected with the suction cup assembly 7, the paper pressing strip 3, and the glue applying assembly 6. The two suction cup assemblies 7 are located in the area between the two paper pressing strips 3, and the two paper pressing strips 3 are located in the area between the two glue applying assemblies 6. This position layout ensures that the components can work in the established order during operation, improving work efficiency and accuracy.

[0080] The upper side of the middle plate 21 is provided with an upper connecting plate 24. The upper connecting plate 24 is provided with a cylinder three 25 that drives the middle plate 21 to move up and down. The cylinder three 25 is fixedly arranged on the upper connecting plate 24, and the piston rod of the cylinder three 25 is fixedly connected with the middle plate 21. The upper connecting plate 24 can move forward and backward. Through the extension and retraction movement of the cylinder three, the up and down movement of the middle plate can be accurately controlled, thereby driving the components mounted on the front and rear sides of the middle plate to perform corresponding operations.

[0081] The upper connecting plate 24 can move forward and backward. In order to realize the forward and backward movement of the upper connecting plate, a first slide rail 251 arranged in the front and back direction is further included, and a first sliding block 26 is slidably connected on the first slide rail 251, and the upper connecting plate 24 is fixedly connected with the first sliding block 26. The combination structure of the slide rail and the sliding block ensures the stability and accuracy of the upper connecting plate during the forward and backward movement.

[0082] The paper pressing strip 3 is long strip-shaped, and is arranged in the left and right direction. This shape and direction design can better contact with the label paper, effectively press the label paper, and prevent it from moving during the gluing and conveying process. The paper pressing strip 3 is connected with the front connecting plate 22 or the rear connecting plate 23 through a connecting rod. The paper pressing strip 3 moves with the middle plate 21. This connection mode enables the paper pressing strip to be stably installed on the mechanical hand and to move with the movement of the middle plate 21. When the middle plate moves up and down, the paper pressing strip can also accurately contact or leave the label paper.

[0083] The suction cup assembly 7 includes a vacuum suction cup 71, the lower end of the vacuum suction cup 71 is a suction cup, and the upper end is connected with a vacuum pump or a vacuum generator. The negative pressure generated by the vacuum pump or the vacuum generator enables the vacuum suction cup to firmly suck the label paper. In this way, the position of the vacuum suction cup for sucking the label paper can be flexibly adjusted according to different sizes of label paper and specific operation requirements, and the stability and accuracy of the suction are ensured. The suction cup assembly 7 moves with the middle plate 21, and when the middle plate moves up and down or moves forward and backward, the suction cup assembly also moves, thereby realizing the operations such as taking, conveying and placing the label paper.

[0084] The glue applying assembly 6 includes a mounting block 61, a glue applying nozzle 62 is connected on the mounting block 61, and a cylinder two 63 for driving the mounting block 61 to move left and right is connected on the front connecting plate 22 and the rear connecting plate 23 respectively. The glue applying nozzle 62 moves left and right to apply glue to the front and back ends of the upper side of the label paper through the extension and contraction movement of the cylinder two. The glue applying nozzle 62 is vertically arranged, the lower end of the glue applying nozzle 62 is a glue outlet, and the upper end of the glue applying nozzle 62 is connected with a glue supply device. The glue supply device provides glue for the glue applying nozzle, ensuring the smooth progress of the gluing process. The glue applying nozzle moves left and right to apply glue to the front and back ends of the upper side of the label paper through the extension and contraction movement of the cylinder two. This driving mode can accurately control the moving position and speed of the glue applying nozzle, and ensure the uniformity and accuracy of the gluing.

[0085] The front connecting plate 22 and the rear connecting plate 23 can be positionally adjusted in the front and back direction. This position adjustment function can adjust the relative positions of the suction cup assembly and the glue applying assembly according to different sizes of label paper and operation requirements, thereby improving the adaptability and operation accuracy of the mechanical hand.

[0086] The paper feeding frame 4 is a horizontally arranged plate structure, which provides a stable conveying platform for the label paper.

[0087] The paper feeding frame 4 is provided with through grooves 41 penetrating through the upper and lower sides thereof, and a plurality of through grooves 41 are arranged in the front-rear direction; these through grooves provide a channel for the movement of the paper straightening arms 44.

[0088] The upper side of the left side of the paper feeding frame 4 is provided with a fixed paper straightening strip 42, which is long strip-shaped and arranged in the front-rear direction; the lower side of the right side of the paper feeding frame 4 is provided with a movable paper straightening strip 43, which is long strip-shaped and arranged in the front-rear direction, and can move left and right; the movable paper straightening strip 43 is provided with paper straightening arms 44 extending upward, which extend through the through grooves 41 to the upper side of the paper feeding frame 4; a plurality of paper straightening arms 44 are arranged in the length direction of the movable paper straightening strip 43; one paper straightening arm 44 corresponds to one through groove 41; the movable paper straightening strip 43 moves left and right, driving the paper straightening arms 44 to move in the through grooves 41; the paper straightening arms 44 cooperate with the fixed paper straightening strip 42 to arrange the label paper on the paper feeding frame 4, so that the label paper can be aligned with the subsequent film bag. The fixed paper straightening strip 42 is an alignment position aligned with the film bag; the label paper is driven by the paper straightening arms 44 to approach the fixed paper straightening strip 42, thereby completing the arrangement of the label paper.

[0089] The bottom of the paper feeding frame 4 is provided with a cylinder driving the movable paper straightening strip 43 to move left and right. Through the extension and retraction movement of the cylinder, the position of the movable paper straightening strip is accurately controlled, thereby realizing the arrangement operation of the label paper.

[0090] Further comprising a movable frame 45 movable forward and backward, the paper feeding frame 4 is fixedly arranged on the movable frame 45; the left and right sides of the front end of the movable frame 45 are respectively provided with movable blocks 46; the two ends of the compression roller 5 are respectively rotatably connected with the two movable blocks 46; the left and right sides of the front end of the movable frame 45 are respectively provided with cylinders one 47 driving the movable blocks 46 to move up and down. The compression roller 5 is driven by the cylinder one 47 to move up and down, realizing the contact and separation of the compression roller with the film bag, and completing the compression operation in the labeling process.

[0091] Further comprising a second sliding rail 48 arranged in the front-rear direction, the second sliding rail 48 is slidably connected with a second sliding block 49, and the movable frame 45 is fixedly connected with the first sliding block 26. Through the combination structure of the sliding rail and the sliding block, the stability and precision of the movable frame in the forward and backward movement are ensured, thereby accurately conveying the label paper to the position for pasting with the film bag.

[0092] The working process of the paper feeding device of the labeling machine is relatively complex, but it is efficient and accurate. The following is a further detailed description of the working process thereof:

[0093] Initial state: The upper connecting plate 24 of the manipulator 2 is in the initial position, the middle plate 21 and each component mounted thereon are in the standby state. The paper feeding rack 4 is in the initial position, and the pressure roller 5 is in the lower position, waiting to receive the label paper. The paper surrounding plate 12 is adjusted according to the size of the label paper to ensure that the label paper is stably placed on the tray 11.

[0094] Manipulator prepares to take the label paper: The cylinder three 25 drives the middle plate 21 to move downward, driving the paper pressing strip 3 on the front connecting plate 22 and the rear connecting plate 23 to contact and press the label paper.

[0095] Gluing operation: According to the size and requirements of the label paper, the positions of the front connecting plate and the rear connecting plate are adjusted to make the glue spraying head 62 in the appropriate position (pre-adjusted). Then, the cylinder two 63 drives the mounting block 61 to move left and right, driving the glue spraying head to apply glue to the front and rear ends of the upper side of the label paper. In this process, the paper pressing strip 3 keeps the label paper fixed to prevent the label paper from moving and ensure the accuracy of the glue application.

[0096] Sucking the label paper: After the gluing is completed, the position of the vacuum chuck 71 is adjusted according to the size and position of the label paper (pre-adjusted). Then, the vacuum pump or vacuum generator works to make the vacuum chuck 71 suck the label paper.

[0097] Manipulator moves the label paper: The cylinder three 25 drives the middle plate 21 to move upward to lift the label paper. Then, the upper connecting plate 24 moves forward along the first sliding rail 251 to send the label paper above the paper feeding rack 4.

[0098] Placing the label paper: The vacuum chuck assembly 7 releases the label paper to place it on the paper feeding rack 4.

[0099] Label paper arrangement: The cylinder at the bottom of the paper feeding rack 4 drives the paper arranging strip 43 to move left and right, driving the paper arranging arm 44 to move in the through slot 41. The paper arranging arm 44 cooperates with the fixed paper arranging strip 42 to arrange the label paper on the paper feeding rack 4, so that the label paper is aligned with the subsequent film bag.

[0100] Paper feeding rack movement: The moving rack 45 moves forward along the second sliding rail 48, driving the paper feeding rack 4 to move forward to transport the label paper to the position for pasting with the rolled film bag.

[0101] Pressure roller operation: The cylinder one 47 drives the moving block 46 to move upward, driving the pressure roller 5 to move upward and abut against the film bag to press and clamp the label paper between the pressure roller 5 and the film bag. At this time, the front end of the label paper is pasted with the film bag through the glue thereon.

[0102] The labeling process: the film bag rotates, and the compression roller 5 rotates with it. With the rotation of the film bag, the label paper is wound on the film bag until the rear end of the label paper is pasted and fixed with the film bag. The labeling of the label paper is completed.

[0103] Repeat the cycle: when the paper feeder 4 completes a paper feeding task, the mechanical hand 2 starts a new round of label paper taking, gluing, moving and placing operations, and the paper feeder 4 and the compression roller 5 are also ready to receive the next label paper and perform the next labeling operation. This cycle continues to achieve a continuous labeling and paper feeding process. The paper surrounding plate 12 always keeps the label paper in place on the tray 11 to ensure the stability of the label paper on the tray 11.

[0104] This complex and orderly workflow enables the paper feeding device of the labeling machine to efficiently complete the label paper feeding and labeling tasks, providing reliable technical support for the labeling process of the plastic film bag making industry.

[0105] The lower side of the intermediate plate 21 is provided with a separation assembly, which includes a rotating plate 72 and a separation spring 73. The rotating plate 72 is rotatably arranged on the lower side of the intermediate plate 21, and the rotating plate 72 is circular. The intermediate plate 21 is provided with a driving device for driving the rotating plate 72 to rotate. The separation spring 73 is vertically arranged, and the upper end of the separation spring 73 is fixedly connected with the rotating plate 72. The driving device controls the rotation of the rotating plate 72, and the rotating plate 72 rotates 180 degrees each time. The label paper is provided with a through hole corresponding to the separation spring 73, and the through holes on the upper and lower label papers are symmetrically arranged about the center of the rotating plate 72. The initial separation spring 73 corresponds to the through hole on the label paper on the upper side, and when the label paper on the upper side is sucked and taken away, the separation spring 73 exerts force on the label paper on the lower side, so that the two label papers are separated. After the label paper on the upper side is sucked and taken away, the rotating plate 72 rotates 180 degrees, and the separation spring 73 corresponds to the through hole on the label paper on the lower side. Through this cyclic operation, the separation spring 73 can exert force on the label paper on the lower side through the through hole on the label paper on the upper side each time the label paper is taken, so that the two label papers can be separated.

[0106] The separation assembly plays a crucial role in ensuring that only one label paper is taken each time, avoiding multiple adhesion situations, thereby ensuring the accuracy and efficiency of the labeling process.

[0107] The rotating plate is circular and rotatably arranged on the lower side of the intermediate plate 21. The design of this position enables the rotating plate to perform a separation operation on the label paper at the appropriate position.

[0108] The intermediate plate 21 is provided with a driving device for driving the rotation of the rotating plate. The driving device is point control, which can accurately control the rotation angle and timing of the rotating plate. The driving device can use a small step motor as the driving device. The step motor has precise angle control capability, and can realize point control of the rotating plate 72 to rotate a specific angle, such as 180 degrees each time. The control system can use a microcontroller or PLC (Programmable Logic Controller). The number of steps and direction of the motor are set by programming to accurately control the position of the rotating plate. At the same time, sensors can be added to detect the actual position of the rotating plate to realize closed-loop control and improve the accuracy of rotation. For example, when the mechanical hand is ready to take the label paper, the control system sends a signal to the step motor to rotate 180 degrees, driving the separation spring 73 to correspond to the hole on the lower label paper.

[0109] The separation spring is vertically arranged and the upper end is fixedly connected with the rotating plate 72. This installation mode ensures that the separation spring can stably function during work.

[0110] The label paper is provided with a hole corresponding to the separation spring. The holes on the upper and lower two label papers are symmetrically arranged about the center of the rotating plate. This design enables the separation spring to accurately pass through the hole on the upper label paper and apply force to the lower label paper to achieve the separation function.

[0111] Initially, the separation spring 73 corresponds to the hole on the upper label paper. At this time, the separation spring is in a ready state, waiting for the upper label paper to be sucked and taken away.

[0112] When the upper label paper is sucked and taken away, the separation spring applies force to the lower label paper. Due to the vertical arrangement of the separation spring and the fixed connection with the rotating plate, it can apply a certain pressure downward to separate the upper and lower label papers.

[0113] After the upper label paper is sucked and taken away, the driving device point controls the rotating plate 72 to rotate 180 degrees. In this way, the separation spring 73 corresponds to the hole on the lower label paper, preparing for the next time to take the label paper.

[0114] Such a cycle operation enables the separation spring to pass through the hole on the upper label paper to apply force to the lower label paper each time the label paper is taken, so that the upper and lower label papers can be separated. This cyclic operation ensures that the paper feeding device can continuously and stably separate and take the label paper.

[0115] The presence of the separation assembly ensures that the robot can only take one label paper at a time, avoiding the situation where multiple label papers are sucked at the same time. This is crucial for the accurate labeling of the labeling machine, ensuring the accurate position of the label and the quality of the paste. By automatically separating the label paper, the need for manual intervention is reduced, improving the working efficiency of the labeling machine. At the same time, the design of the cycle operation makes the separation process fast and stable, which can adapt to the requirements of high-speed production.

[0116] The separation assembly closely cooperates with the suction cup assembly 7 of the robot. When the suction cup assembly sucks the upper label paper, the separation spring works to ensure that the lower label paper will not be taken away. At the same time, the movement and operation of the robot also need to be coordinated with the working rhythm of the separation assembly to realize efficient paper feeding and labeling process.

[0117] Label paper contact process: as the intermediate plate 21 and the separation spring 73 move downward, the separation spring 73 will eventually come into contact with the label paper. At this time, the position and state of the separation spring 73 are crucial for the subsequent separation operation. Because only when the separation spring 73 accurately contacts the label paper, can it realize the effective separation of the label paper according to its own characteristics and cooperation with other components.

[0118] Label paper compression phenomenon: after contacting the label paper, the separation spring 73 will be compressed due to the downward movement of the intermediate plate 21. The compression characteristics of the spring play a key role here, which can store a certain amount of elastic potential energy to provide the necessary restoring force for subsequent label paper separation. This restoring force will help the separation spring 73 to exert appropriate force on the label paper to achieve the separation of the upper and lower label papers.

[0119] The above only describes the preferred embodiments of the present application, and does not limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A paper feeding device of a labeling machine, comprising a paper placing frame (1) and a mechanical hand (2), wherein the mechanical hand (2) is arranged above the paper placing frame (1), and characterized in that: the mechanical hand (2) comprises a mounting plate, which is movable up and down and front and back; the mounting plate is provided with glue applying assemblies (6) on the front and back sides thereof, which are movable left and right to apply glue; the mounting plate is provided with suction disc assemblies (7) on the front and back sides thereof; the mounting plate is provided with paper pressing strips (3) on the front and back sides thereof; the front side of the paper placing frame (1) is provided with a paper feeding frame (4) which is movable front and back, and the front side of the paper feeding frame (4) is provided with a pressing roller (5) which is movable up and down; the paper feeding frame (4) is provided with through grooves (41) penetrating through the upper and lower sides thereof, a plurality of the through grooves (41) are arranged in the front and back direction, the upper side of the left side of the paper feeding frame (4) is provided with a fixed paper straightening strip (42) arranged in the front and back direction, the lower side of the right side of the paper feeding frame (4) is provided with a movable paper straightening strip (43) arranged in the front and back direction, the movable paper straightening strip (43) is movable left and right, the movable paper straightening strip (43) is provided with a paper straightening arm (44) extending upward, and the paper straightening arm (44) extends to the upper side of the paper feeding frame (4) through the through grooves (41); the paper feeding frame (4) is fixedly arranged on a movable frame (45) which is movable front and back, the left and right sides of the front end of the movable frame (45) are respectively provided with movable blocks (46), the two ends of the pressing roller (5) are respectively rotatably connected with the two movable blocks (46), and the left and right sides of the front end of the movable frame (45) are respectively provided with air cylinders (47) for driving the movable blocks (46) to move up and down; the mounting plate comprises a middle plate (21), the front and back sides of the middle plate (21) are respectively connected with a front connecting plate (22) and a back connecting plate (23), the front connecting plate (22) and the back connecting plate (23) are respectively connected with the suction disc assemblies (7), the paper pressing strips (3) and the glue applying assemblies (6), the two suction disc assemblies (7) are located in the region between the two paper pressing strips (3), the two paper pressing strips (3) are located in the region between the two glue applying assemblies (6), the upper side of the middle plate (21) is provided with an upper connecting plate (24), the upper connecting plate (24) is provided with air cylinders (25) for driving the middle plate (21) to move up and down, and the upper connecting plate (24) is movable front and back; the glue applying assemblies (6) comprise mounting blocks (61), the mounting blocks (61) are connected with glue applying nozzles (62), and the front and back connecting plates (22) and (23) are respectively connected with air cylinders (63) for driving the mounting blocks (61) to move left and right. ​ ​ ​ ​ ​ 2. A paper feed device of a labeling machine according to claim 1, characterized in that: ​ 3. A paper feed device for a labelling machine according to claim 2, characterised in that: ​ 4. A paper feed device of a labelling machine according to claim 3, characterized in that: ​ 5. A paper feed device for a labelling machine according to claim 4, characterised in that: ​ 6. A paper feed device of a labeling machine according to claim 4, characterized in that: It also includes the first slide rail (251) arranged along the front and back direction, the first slide rail (251) is slidably connected with the first slider (26), the upper connecting plate (24) is fixedly connected with the first slider (26).

7. A paper feed device for a labelling machine according to claim 6, characterised in that: It also includes the second slide rail (48) arranged along the front and back direction, the second slide rail (48) is slidably connected with the second slider (49), the moving frame (45) is fixedly connected with the first slider (26).

8. A paper feed device of a labeling machine according to claim 4, characterized in that: The suction cup assembly (7) includes a vacuum suction cup (71), the vacuum suction cup (71) can be adjusted in position in the front and back direction.

9. A paper feed device of a labeling machine according to claim 4, characterized in that: The front connecting plate (22) and the rear connecting plate (23) can be adjusted in position in the front and back direction.

10. A paper feed device of a labeling machine according to claim 1, characterized in that: The paper placing frame (1) includes a tray (11), the middle of the tray (11) is a paper placing area, the front, back, left and right four sides of the paper placing area are respectively provided with adjustable paper surrounding plates (12).

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