Automatic label attaching device

Abstract

The present invention provides an automatic label attaching device, comprising a label conveying mechanism and a label attaching mechanism; the label conveying mechanism comprises a material roll fixing roller for fixing a raw material roll and a winding roller for winding a base tape, a separation plate is arranged between the material roll fixing roller and the winding roller, the free vertical edge of the separation plate is located in the up-down direction, the base tape is adjacent to the plate surface of the separation plate and is folded back in an attached manner from the free vertical edge and extends to the location of the winding roller, the barrel conveying belt is located below the free section of the label C extending to the front end of the free vertical edge, and the free section of the label C is located on the moving path of the barrel G, and the back of the label C is coated with a film layer and the film layer faces one side of the barrel G. The free vertical edge of the separation plate is used as a boundary, so that the reliable separation of the base tape B and the label C is ensured and the separated label C is away from the base tape B.

Description

[0001] The invention relates to packaging equipment, in particular to an automatic label attaching device in equipment for attaching labels to barrels of bottled water, beverages or raw materials. Background Art

[0002] It is self-evident that bottled mineral water provides convenience for people's daily life. In order to meet the special needs of long-distance travel or family, barreled mineral water is also widely needed. For production enterprises, the production of water is the same, but there are indeed differences in the filling and packaging processes of bottled or barreled mineral water, especially the difference in the volume and shape of barrels and bottles, which makes it difficult to universalize the technical solutions or equipment for labeling.

[0003] As for the barreled mineral water with a volume of 4 to 5L, it is generally packed in boxes of 4 barrels for easy handling and sales. In order to facilitate use and improve the efficiency of packing, the wall of the barrel body is a square with rounded corners. A lifting handle is set at the concave position on one side of the barrel body, so the label is generally attached to the barrel body opposite the handle. The certainty of the label attachment position brings labeling difficulties. The efficiency of manual labeling is too low and the labor intensity is also high. The automatic supply or conveying device of the label is the basis for the automatic attachment of the label. The label raw material or label roll is usually provided by the printing manufacturer, that is, the label roll includes a roll coated with a self-adhesive layer and pasted on the smooth surface of the label base tape and in a reel shape. The joints of adjacent labels are provided with notches for easy separation or tearing. Since the label material is mostly plastic or paper and similar materials and has soft and thin physical properties, how to ensure the separation of the label from the base tape and the label after separation from the base tape maintains a specific posture waiting for attachment, these problems have not been effectively solved by the existing technology. Summary of the invention

[0004] The object of the present invention is to provide an automatic label attaching device, which ensures that a raw material roll is unfolded into a belt-like form for transportation and that the label separated from the base belt is kept away from the base belt.

[0005] A label automatic attaching device comprises a label conveying mechanism and a label attaching mechanism; the label conveying mechanism comprises a material roll fixing roller for fixing a raw material roll and a winding roller for winding a base tape, a separation plate is arranged between the material roll fixing roller and the winding roller, a free vertical edge of the separation plate is located in the up and down direction, the base tape is adjacent to the plate surface of the separation plate and is folded back in an attached manner from the free vertical edge and extends to the location of the winding roller, the rotary shaft cores of the material roll fixing roller and the winding roller are located in the vertical direction, the roller cores of the material roll fixing roller and the winding roller are located in the vertical direction and the winding roller is an active roller; the barrel conveyor belt is located below a free section of the label C extending to the front end of the free vertical edge, and the free section of the label C is located on the moving path of the barrel G, the back of the label C is coated with a film layer and the film layer faces one side of the barrel G, a pressure roller is arranged on the front of the free section of the label C, the moving mechanism drives the pressure roller to move in a direction vertical to the moving direction of the barrel G, and the free section of the label C is located on the moving path of the pressure roller.

[0006] In the above scheme, with the free vertical edge of the separation plate as the boundary, on the upstream side of the free vertical edge, the label C and the base band B are still attached together and still maintain the state of a composite tape; on the downstream side of the free vertical edge, the label C separated from the base band B is smoothly extended in a natural unfolding state, while the base band B is extended in almost the opposite direction, thereby ensuring the reliable separation of the base band B and the label C and the separated label C is away from the base band B, eliminating the possibility of the two intersecting again, that is, the two have no chance of being attached or combined again, ensuring that the label C separated from the base band B is in a state ready for labeling at any time. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 , 2 It is a three-dimensional structural schematic diagram of the present invention;

[0008] Figure 3 , 4 , 5 are schematic diagrams of the three-dimensional structure of the usage status in three visual directions respectively;

[0009] Figure 6 , 7 , 8 are Figure 1 , 2 , a partial enlarged schematic diagram in 4;

[0010] Fig. 9 , 10 It is a three-dimensional structural schematic diagram of the label conveying mechanism. DETAILED DESCRIPTION

[0011] like Fig. 9 , 10As shown, the label conveying mechanism includes a material roll fixing roller 10 for fixing the raw material roll A and a winding roller 20 for winding the base tape B. A separation plate 30 is arranged between the material roll fixing roller 10 and the winding roller 20. The free hanging edge 31 of the separation plate 30 is located in the up and down direction. The base tape B is adjacent to the plate surface of the separation plate 30 and is folded back from the free vertical edge 31 in an attached manner and extends to the location of the winding roller 20. The rotating axis cores of the material roll fixing roller 10 and the winding roller 20 are located in the vertical direction. The roller cores of the material roll fixing roller 10 and the winding roller 20 are located in the vertical direction and the winding roller 20 is an active roller.

[0012] In the above scheme, the cores of the material roll fixing roller 10 and the winding roller 20 are located in the vertical direction, so that the paper surface of the unfolded base band B and label C are located in the vertical plane, and the labeling of the barrel body that is transported vertically does not require complicated barrel body posture adjustment procedures; with the free hanging edge 31 of the separation plate 30 as the boundary, the paper surface or the veneer of the part separated from the base band B and the part still attached to the base band B on the same label C basically maintain a flat posture, while the base band B extends almost in the opposite direction on both sides of the free hanging edge 31, so that the label C is guaranteed to be attached and is also conducive to the separation of the attached part and the winding of the base band B.

[0013] In order to occupy as little space as possible, a reversing roller is arranged between the material roll fixing roller 10 and the separation plate 30 and between the winding roller 20 and the separation plate 30, and a tensioning roller 40 is arranged between the reversing roller upstream of the separation plate 30 and the material roll fixing roller 10, and the roller core of the reversing roller is located in the vertical direction. The arrangement of the tensioning roller 40 ensures that the belt between the material roll fixing roller 10 and the winding roller 20 remains flat during the pause stage during the belt conveying process and the attachment process, effectively avoiding the occurrence of local folding, sagging or bagging.

[0014] The separation plate 30 is formed by bending and overlapping plates with a thickness of less than 0.3 mm, and the angle between the overlapping surfaces is less than 10°, and the straight edge of the bending part is located in the vertical direction. The factors to be considered when selecting plates to make separation plates are mainly to have appropriate strength and rigidity. An equivalent solution to this solution is to process the plates into a wedge-shaped plate, similar to the shape of a straight-blade knife. It should be noted that the wedge blade should not be too sharp but should be appropriately blunt, combined with Figure 2 shown.

[0015] The material roll fixing roller 10 sequentially passes through the first reversing roller 41 and the second reversing roller 42 to extend downstream for transportation. A tensioning roller 40 is arranged between the first reversing roller 41 and the second reversing roller 42. The roller core of the tensioning roller 40 moves in a direction close to or away from the roller core connection line of the first reversing roller 41 and the second reversing roller 42. The material roll fixing roller 10, the first reversing roller 41, the second reversing roller 42 and the upstream side plate surface of the separation plate 30 are arranged in a straight direction as a whole. This ensures that the path for conveying the label is short, facilitates the arrangement of the tensioning roller 40, and has a high space utilization rate.

[0016] A label scanning sensor 50 is arranged at the upstream position of the separation plate 30, and a label C to be attached is reserved downstream of the label scanning sensor 50. The label scanning sensor 50 is arranged to collect labels and their specific positions, and provide control signals for the start and stop of the conveying mechanism. For example, after the label scanning sensor 50 collects a two-dimensional code of a label C, the signal is transmitted to the controller, and the controller outputs a control signal to start or drive the winding roller 20 to stop or rotate.

[0017] In order to make full use of the space and conveniently fix the tension roller 40, the specific solution is that the lower end of the tension roller 40 is connected to the swing end of the swing arm 60, the other end of the swing arm 60 away from the swing end is hingedly arranged at a position adjacent to the material roll fixing roller 10, and a tension spring is arranged between the frame and the swing arm 60. The elastic force provided by the tension spring drives the swing end of the swing arm 60 to move in a direction away from the line connecting the first reversing roller 41 and the second reversing roller 42. Through the setting of the tension spring, it is convenient and reliable to realize that the swing arm 60 drives the tension roller 40 to move so that the label belt is in a tensioned state, providing basic guarantee for the separation of the label C and the winding of the base belt B.

[0018] The label conveying mechanism is described in detail above, and the label attaching mechanism is described in detail below.

[0019] like Figure 1 , 2 As shown in Figures 3, 4 and 5, an automatic label attaching device is provided, wherein a pressure roller 70 is rotatably arranged around its roller core located in the vertical direction, the belt surface of the conveyor belt 110 of the conveying barrel G is arranged horizontally, and the moving mechanism drives the roller core of the pressure roller 70 to move in the vertical direction along the moving direction of the barrel G, and the free section of the label C separated from the label base band B on the label material A conveyed by the label conveying mechanism extends to the moving path of the barrel G, the back of the label C is coated with a film layer and the film layer faces one side of the barrel G, and the pressure roller 70 is arranged on the side where the front side of the free section of the label C is located.

[0020] What needs to be briefly explained here is that the label material A is the raw material tape when the label C and the label base tape B are attached together, and the labeling operation is the process of separating the label C from the label base tape B and attaching them to the barrel body G.

[0021] In the above solution, the conveyor belt 110 operates normally. Figure 3 , 4As shown, during the process of the conveying barrel body G moving from upstream to downstream, it contacts and adheres to the film layer of the label C that has arrived in advance, and during the process of continuing to move downstream, the label C is attached to the barrel body G with the pressure of the pressure roller, and the tail end of the label C that has been attached to the barrel body G but has not yet been attached to the barrel body involves the next label C to move to the waiting position for attachment, and the two are separated at the waiting position. At this time, the label attached to the barrel body G continues to move with the barrel body G, and the label C to be attached that is separated from it stays at the waiting position for attachment and is ready for attachment.

[0022] A cutting plate 80 is provided on the upstream side of the pressing roller 70 to split the front and rear labels C which are still connected at the head and tail ends. The front vertical edge of the cutting plate 80 is a free edge and extends to the moving path of the pressing roller 70. The free section of the label C is attached to the front side of the cutting plate 80. The cutting plate 80 is an elastic thin plate and the rear side is fixed to the frame.

[0023] When the conveyor belt 110 carries the barrel body G to the waiting position, the free section of the label C is attached to the front side of the cutting plate 80, and the front section of the label C and the front side of the cutting plate 80 is just on the travel path of the barrel body, so the barrel body will contact the glue-coated surface of the label C waiting at the waiting position, and the barrel body G pushes the label C and the cutting plate 80. Since the cutting plate 80 is elastic, it will inevitably bend and deform to make way for the barrel body G to move forward while keeping close to the barrel body. In this process, the label C will be attached to the front part of the barrel body G. As the barrel body G moves, when the side of the barrel body G reaches the front section of the cutting plate 80, the cutting plate 80 begins to separate from the barrel body, and the label C is attached by relying on the elastic force. The label C attached to the barrel body G and the adjacent label C connected to it are in a tensioned state. When the connected notched breaking parts of the two connected labels C reach the front side vertical edge of the cutting plate 80, the two connected labels C are broken and separated from each other. In order to ensure the separation effect of the cutting plate 80 on the two connected labels C, it is necessary to make the front side vertical edge of the cutting plate 80 into a slightly blunt blade shape and use the pressure roller 70 to push the cutting plate 80 in an outward-turning movement trend, that is, in the direction of the engraved label C. The front side vertical edge of the cutting plate 80 can easily separate the two connected labels C, and at the same time, the roller surface of the pressure roller 70 contacts the rear side surface of the barrel body to attach the rear section of the label C to the rear side surface of the barrel body.

[0024] The rear side of the cutting plate 80 is supported by a support plate 90, and the front vertical edge of the support plate 90 is located at the avoidance position of the moving path of the pressure roller 70 and is supported in the middle of the rear side of the cutting plate 80. The support plate 90 is an elastic thin plate, and the support plate 90 and the rear side of the cutting plate 80 that are abutted against each other are fixed on the frame. In the above scheme, the support plate 90 formed by the elastic thin plate is supported on the middle part of the rear side surface of the cutting plate 80, so that it is ensured that the plate body of the cutting plate 80 located in the front section of the support plate 90 is in a free state. Its own elastic force is limited, so it can deform freely. It can smoothly bend toward the front side of the barrel body G to ensure that suitable elastic force is provided during the attachment process of the label C to achieve the labeling action. The rear section of the plate body where the cutting plate 80 and the support plate 90 overlap is basically kept straight or with a small curvature under the support of the support plate 90, which is beneficial to the subsequent traction and transportation of the label C, and the support plate 90 is located in a position to avoid the moving path of the pressure roller 70 to ensure the normal displacement of the pressure roller 70.

[0025] One end of the restraint belt 100 is attached and fixedly connected to the front side surface of the cutting plate 80 , and the other end of the restraint belt 100 is attached and connected to the front side roller surface of the pressure roller 70 . The middle section of the restraint belt 100 is surrounded on the front side vertical edge of the cutting plate 80 .

[0026] The restraining belt 100 is made of a weakly static or antistatic thin belt material, and the rolling surface of the pressing roller 70 is made of a soft material.

[0027] The restraint belt 100 provided in the above scheme avoids the roller surface of the pressure roller 70 from directly contacting the label, because the soft nature of the pressure roller 70 inevitably has strong electrostatic characteristics, which avoids strong electrostatic adsorption and interference with the flat posture of the label C, and prevents defects such as hollowing, bubbles, and folding when it is attached; in addition, the pressure roller 70 is restricted from rotating arbitrarily after being connected with the restraint belt 100; at the same time, the restraint belt 100 is a weakly electrostatic or anti-static thin belt material, which can ensure that the label surface of the label C to be attached is flat when it arrives at the attachment position; furthermore, the restraint belt 100 is actually placed around the front side vertical edge of the cutting plate 80, that is, the cutting blade, so it protects the label C while ensuring the separation and pressing effect at the notch of the label C, ensuring the smooth separation of the front and rear labels C. It has been verified by experiments that the commonly known kraft paper can be used as the preferred material for the restraint belt 100.

Claims

1. An automatic label attaching device, characterized in that: The invention comprises a label conveying mechanism and a label attaching mechanism; the label conveying mechanism comprises a material roll fixing roller (10) for fixing a raw material roll (A) and a winding roller (20) for winding a base tape (B); a separation plate (30) is arranged between the material roll fixing roller (10) and the winding roller (20); a free vertical edge (31) of the separation plate (30) is located in the up-down direction; the base tape (B) is adjacent to the plate surface of the separation plate (30) and is folded back in an attached manner from the free vertical edge (31) and extends toward the location of the winding roller (20); the rotating shaft cores of the material roll fixing roller (10) and the winding roller (20) are located in the vertical direction; the material roll fixing roller (10) and the winding roller (20) are arranged in a vertical direction; The roller cores of the label (C) and the winding roller (20) are located in the vertical direction and the winding roller (20) is an active roller; the barrel conveyor belt (110) is located below the free section of the label (C) extending to the front end of the free vertical edge (31), and the free section of the label (C) is located on the moving path of the barrel (G); the back of the label (C) is coated with a film layer and the film layer faces one side of the barrel (G); a pressure roller (70) is arranged on the front of the free section of the label (C); a moving mechanism drives the pressure roller (70) to move in a direction perpendicular to the moving direction of the barrel (G), and the free section of the label (C) is located on the moving path of the pressure roller (70); A cutting plate (80) is arranged on the upstream side of the pressing roller (70) to split the front and rear labels (C) at the connecting seam of the front and rear ends of the labels, the front vertical edge of the cutting plate (80) is a free edge and extends to the moving path of the pressing roller (70), the free section of the label (C) is attached to the front side of the cutting plate (80), and the cutting plate (80) is an elastic thin plate and the rear side is fixed to the frame; The rear side of the cutting plate (80) is supported by a support plate (90), the front vertical edge of the support plate (90) is located at an avoidance position of the moving path of the pressing roller (70) and is supported at the middle of the rear side of the cutting plate (80), the support plate (90) is an elastic thin plate, and the support plate (90) and the rear side of the cutting plate (80) that are in contact with each other are fixed on the frame; One end of the restraining belt (100) is attached and fixedly connected to the front side plate surface of the cutting plate (80), the other end of the restraining belt (100) is attached and connected to the front side roller surface of the pressing roller (70), and the middle section of the restraining belt (100) is placed around the front side vertical edge of the cutting plate (80); A reversing roller is provided between the material roll fixing roller (10) and the separation plate (30) and between the winding roller (20) and the separation plate (30), a tensioning roller (40) is provided between the reversing roller upstream of the separation plate (30) and the material roll fixing roller (10), and the roller core of the reversing roller is located in the vertical direction.

2. The automatic label attaching device according to claim 1, characterized in that: The separation plate (30) is formed by bending and overlapping plates with a thickness of less than 0.3 mm, and the angle between the overlapping surfaces is less than 10°, and the straight edge at the bend is located in the vertical direction.

3. The automatic label attaching device according to claim 1, characterized in that: The material roll fixing roller (10) sequentially passes through the first reversing roller (41) and the second reversing roller (42) to extend downstream for conveyance. A tensioning roller (40) is arranged between the first reversing roller (41) and the second reversing roller (42). The roller core of the tensioning roller (40) moves in a direction close to or away from a roller core connection line of the first reversing roller (41) and the second reversing roller (42). The material roll fixing roller (10), the first reversing roller (41), the second reversing roller (42) and the upstream side plate surface of the separation plate (30) are arranged in a straight direction as a whole. The lower end of the tensioning roller (40) is connected to the swing end of the swing arm (60). The other end of the swing arm (60) away from the swing end is hingedly arranged at a position adjacent to the material roll fixing roller (10). A tensioning spring is arranged between the frame and the swing arm (60). The elastic force provided by the tensioning spring drives the swing end of the swing arm (60) to move in a direction away from a connection line of the first reversing roller (41) and the second reversing roller (42).

4. The automatic label attaching device according to claim 1 or 2, characterized in that: A label scanning sensor (50) is arranged at an upstream position of the separation plate (30), and a label (C) to be attached is reserved downstream of the label scanning sensor (50).

5. The automatic label attaching device according to claim 1, characterized in that: The restraining belt (100) is made of a weakly static or antistatic thin belt material, and the rolling surface of the pressing roller (70) is made of a soft material.

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