A label double-sided co-cutting rotary die cutting machine

Abstract

This invention belongs to the field of label paper tape rotary die-cutting technology, specifically a label double-sided co-cutting rotary die-cutting machine, including a cabinet, a frame plate on one side of the cabinet, a feeding roller and a turntable on the side of the cabinet near the frame plate, two rewinding rollers symmetrically connected to the turntable, two sets of rotary die-cutting components between the cabinet and the frame plate, multiple guide rollers near each set of rotary die-cutting components between the cabinet and the frame plate, label paper tape is threaded on the feeding roller, the label paper tape passes around each guide roller and the rotary die-cutting components and finally wraps around the outside of the rewinding roller, multiple glue removal rollers are respectively arranged between the cabinet and the frame plate, the face paper and back paper of the label paper tape roll in contact with the surface of the corresponding glue removal roller.

Description

Technical Field

[0001] This invention belongs to the field of label paper strip circular die-cutting technology, specifically a label double-sided co-cutting circular die-cutting machine. Background Technology

[0002] In the existing technology, the rotary die-cutting machine includes a die-cutting cylinder and a pressure cylinder. That is, the working parts of both the die-cutting plate and the cutting mechanism adopt a cylindrical structure. During the operation, the paper feeding roller delivers the paperboard between the die-cutting cylinder and the pressure cylinder, which clamp the paperboard and perform die-cutting. The die-cutting cylinder rotates once to complete one work cycle. Because the cylinder rotates continuously during the operation of the rotary die-cutting machine, its production efficiency is the highest among all types of die-cutting equipment. Therefore, the rotary die-cutting machine is particularly suitable for mass production.

[0003] In existing technologies, a set of circular die-cutting components is generally used to perform one-time die-cutting of the label paper. In order to ensure that the label paper is completely cut through, the die-cutting roller and the pressure roller need to apply a large amount of pressure to the label paper. This causes the adhesive layer of the label paper to be squeezed out to the surface, resulting in the label paper sticking together after rewinding. As a result, the label paper may tear when unwound during reprocessing, or the label paper may be contaminated, affecting product quality.

[0004] However, if multiple sets of circular die-cutting components are used to perform multiple die-cuts to reduce the pressure applied to the label paper in a single cut, thereby reducing the amount of glue overflow, then multiple die-cuts are prone to die-cutting deviations, making it difficult to accurately align the die-cutting positions, ultimately affecting product quality. This creates a contradiction with the problem of glue overflow caused by a single die-cut.

[0005] The traditional way to solve the problem of excess glue is to wrap gauze around the guide roller and use the gauze to stick and peel off the excess glue. However, this method is prone to the problem that the glue is not removed by the gauze and instead the fibers on the gauze are removed and stuck to the surface of the label tape.

[0006] Therefore, there is an urgent need for a rotary die-cutting machine that can solve the above problems and improve the efficiency and quality of rotary die-cutting of label paper. Summary of the Invention

[0007] To overcome the shortcomings of existing technologies, this invention addresses the technical problem by setting up two sets of circular die-cutting components. This ensures that the die-cutting marks fully penetrate the label tape's face paper and back paper, guaranteeing die-cutting quality, while simultaneously reducing the pressure applied to the label tape during each die-cut. This reduces the problem of the adhesive layer overflowing from the edges due to intense pressure, preventing adhesion between label tapes or residue contamination on the label tape surface after rewinding. Furthermore, by setting up two sets of adhesive removal rollers that roll in contact with the face paper and back paper respectively after die-cutting by the two sets of circular die-cutting components, the residual adhesive overflowing from the back paper due to pressure is scraped away after each of the two die-cutting processes, further eliminating residual adhesive and preventing it from affecting the label tape after rewinding. To improve the quality of the label tape, a mesh layer with a scale-like metal wire structure is used to clamp and peel off residual adhesive from the surface of the label tape. Compared to the traditional method of wrapping gauze around the guide roller to adhere and remove residual adhesive, this method effectively improves the efficiency and cleanliness of removing residual adhesive. It also avoids the problem that the residual adhesive is not removed by the gauze but instead causes the fibers on the gauze to be removed and adhere to the surface of the label tape. By setting frame-shaped blades and cross-shaped blades, corresponding marks are left on the face paper and back paper of the label tape, respectively. The overlap of the marks of the frame-shaped blades and cross-shaped blades is identified by a visual recognition sensor to determine whether the two sets of circular die-cutting components accurately repeat die-cutting at the same position. Feedback is used to adjust the extension and retraction of the electric push rod to adjust the die-cutting position, ensuring that the marks completely overlap and thus ensuring processing quality.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a label double-sided co-cutting circle die-cutting machine, comprising: The cabinet has a shelf on one side. A feeding roller and a turntable are driven on the side of the cabinet near the shelf. Two rewinding rollers are symmetrically connected on the turntable. Two sets of circular die-cutting components are arranged between the cabinet and the shelf. Multiple guide rollers are arranged near each set of circular die-cutting components between the cabinet and the shelf. Label paper tape is threaded on the feeding roller. The label paper tape passes around each guide roller and the circular die-cutting components and finally wraps around the outside of the rewinding roller. Multiple glue removal rollers are arranged between the cabinet and the shelf. The face paper and back paper of the label paper tape roll in contact with the surface of the corresponding glue removal roller.

[0009] Furthermore, a slitting component is provided between the cabinet and the frame near the rewinding roller. Slitting guide rollers are provided on both sides of the slitting component. A correction component is provided between the feeding roller and the circular die-cutting component. The label paper tape passes through the correction component and the slitting component respectively. Three guide rollers are provided near the correction component to guide the label paper tape to pass through the correction component stably.

[0010] Furthermore, the two circular die-cutting components are located at the end of the cabinet and the shelf away from the turntable and are distributed at different heights. The label paper strip passes through the set of circular die-cutting components located at the lower position from top to bottom to die-cut the face paper of the label paper strip, and the label paper strip passes through the set of circular die-cutting components located at the higher position from bottom to top to die-cut the back paper of the label paper strip.

[0011] Furthermore, the circular die-cutting component includes a pressure roller and a die-cutting plate roller. The shafts of the pressure roller and the die-cutting plate roller are respectively fixedly connected to meshing cooperating gears. The surfaces of the two die-cutting plate rollers in the two sets of circular die-cutting components are respectively provided with a first die-cutting blade and a second die-cutting blade for die-cutting the face paper and back paper of the label paper tape. Each pressure roller is provided with a first bearing seat at both ends, and each die-cutting plate roller is provided with a second bearing seat at both ends. The cabinet and the shelf are provided with horizontally oriented sliding grooves at corresponding positions of each set of circular die-cutting components, and each first bearing seat and second bearing seat is slidably disposed in the corresponding sliding groove.

[0012] Furthermore, the first die-cutting blade has a frame-shaped blade on its surface corresponding to the edge of the label tape, and the second die-cutting blade has a cross-shaped blade on its surface corresponding to the edge of the label tape. The cross-shaped blades have notches evenly spaced on their blades. The cabinet has two supports located above the feeding roller on both sides of the label tape's face paper and back paper, respectively. The two supports are equipped with a visual recognition sensor pointing towards the label tape and a lighting lamp, respectively. The visual recognition sensor is used to identify the overlap of the indentations produced by the frame-shaped blade and the cross-shaped blade at the edge of the label tape.

[0013] Furthermore, a tension plate is provided through the shaft of each pressure roller and die-cutting roller, and a bearing is provided at the connection between the shaft of the pressure roller and die-cutting roller and the tension plate. A seat plate is provided between the cabinet and the shelf at the opening of the slide groove. A through hole is provided on the seat plate at each tension plate, and an electric push rod is provided on the seat plate at each tension plate. The rod head of the electric push rod passes through the through hole and is fixedly connected to the corresponding tension plate.

[0014] Furthermore, the traction plate has a shaft groove at the corresponding position of the pressure roller, and the bearing installed on the pressure roller can slide along the shaft groove to adjust its position. The end of the traction plate away from the electric push rod is threaded with an adjusting bolt, and the end of the adjusting bolt passes into the shaft groove and abuts against the corresponding bearing outer ring.

[0015] Furthermore, a threaded sleeve is provided on the frame plate at the corresponding position of each degumming roller, and a threaded shaft head is threadedly connected to each threaded sleeve. The end of each threaded shaft head is rotatably connected to the end of the corresponding degumming roller.

[0016] Furthermore, the adhesive removal roller includes a shaft with two end caps at both ends. A mesh layer is disposed between the two end caps and surrounding the outside of the shaft. The mesh layer is used to scrape and remove residual adhesive from the surface of the label tape. The shaft is padded between the shaft and the mesh layer.

[0017] Furthermore, the shaft is made of hard rubber, the mesh layer is made of stainless steel wire, and the mesh layer is composed of multiple sets of wavy wires interlaced and stacked in a scale-like arrangement.

[0018] In summary, compared with the prior art, the beneficial effects of the present invention are as follows: (1) By setting two sets of circular die-cutting components, it is possible to ensure that the die-cutting marks fully penetrate the label paper and the backing paper to ensure the die-cutting quality, while also reducing the pressure applied to the label paper during a single die-cutting, thereby reducing the problem of the adhesive layer in the middle of the label paper overflowing from the edge due to violent extrusion, and avoiding the problem of adhesive layer overflow causing adhesion between the label paper strips or the label paper strip surface being contaminated by residual adhesive after rewinding.

[0019] (2) By setting two sets of glue removal rollers that roll in contact with the face paper and the back paper of the label paper after the label paper is die-cut by two sets of circular die-cutting parts, the residual glue overflowing from the back paper due to the extrusion is scraped off after the two die-cutting processes, thereby further eliminating residual glue and avoiding the residual glue affecting the quality of the rewound label paper.

[0020] (3) By setting up a mesh layer with a scale-like metal wire structure, the residual adhesive on the surface of the label paper tape is clamped and peeled off. Compared with the traditional method of wrapping gauze on the guide roller to adhere and remove the residual adhesive, it can effectively improve the efficiency and cleaning effect of removing residual adhesive, and avoid the problem that the residual adhesive is not removed by the gauze but instead removes the fibers on the gauze and adheres to the surface of the label paper tape together.

[0021] (4) By setting frame-shaped blades and cross-shaped blades, corresponding marks are left on the front and back paper of the label paper tape respectively. The overlapping state of the marks of the frame-shaped blades and cross-shaped blades is identified by the visual recognition sensor to determine whether the two sets of circular die-cutting parts accurately repeat die-cutting at the same position. Feedback is given to adjust the extension and retraction of the electric push rod to adjust the die-cutting position, ensuring that the marks completely overlap and thus ensuring the processing quality. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the present patent.

[0023] Figure 2 for Figure 1 A magnified view of a section at point B in the middle.

[0024] Figure 3 This is a side view of the present patent.

[0025] Figure 4 for Figure 3 A three-dimensional sectional view at point AA.

[0026] Figure 5 This is a schematic diagram of the label tape winding process.

[0027] Figure 6 for Figure 5 A magnified view of a section at point C.

[0028] Figure 7 This is a three-dimensional schematic diagram from another perspective of this patent.

[0029] Figure 8 This is a schematic diagram of the structure of the circular die-cutting component of this patent.

[0030] Figure 9 This is a schematic diagram of the structure at the junction of the second die-cutting blade and the frame-shaped blade.

[0031] Figure 10 for Figure 9 A magnified view of a section at point D.

[0032] Figure 11 This is a schematic diagram of the structure of the glue removal roller.

[0033] Figure 12 This is a magnified view of a portion of point E on the frame.

[0034] Figure 13 This is a schematic diagram of the overlapping indentations.

[0035] Explanation of reference numerals in the attached drawings: Cabinet 10; Shelf 11; Feeding roller 12; Turntable 13; Rewinding roller 14; Label tape 15; Guide roller 16; Slitting component 17; Slitting guide roller 18; Slide groove 19; First shaft seat 20; Second shaft seat 21; Pressure roller 22; Die-cutting plate roller 23; Pull plate 24; Shaft hole 25; Shaft groove 26; Bearing 27; Adjusting bolt 28; Electric push rod 29; Seat plate 30; Through hole 31; Cooperative gear 32; First die-cutting blade 33; Second die-cutting blade 34; Frame-shaped blade 35; Cross-shaped blade 36; Notch 37; Threaded sleeve 38; Threaded shaft head 39; Glue removal roller 40; End cap 41; Mesh layer 42; Elastic bushing 43; Shaft body 44; Bracket 45; Visual recognition sensor 46; Lighting lamp 47; Correction component 48. Detailed Implementation

[0036] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0037] like Figure 1-13As shown, a label double-sided co-cutting circular die-cutting machine includes a cabinet 10. A frame plate 11 is spaced apart on one side of the cabinet 10. A feeding roller 12 is driven to the side of the cabinet 10 near the frame plate 11. Label paper tape 15 is threaded on the feeding roller 12. Two sets of circular die-cutting components with different heights are arranged between the ends of the cabinet 10 and the frame plate 11. A slitting component 17 is arranged between the cabinet 10 and the frame plate 11 above the feeding roller 12. Slitting guide rollers 18 are rolled on both sides of the slitting component 17. A turntable 13 is driven to the end of the cabinet 10 away from the circular die-cutting component. Two rewinding rollers 14 are symmetrically distributed and driven to the turntable 13. In this embodiment, the feeding roller 12 and the rewinding roller 14 are preferably air-expanding rollers.

[0038] like Figure 1-13 As shown, multiple guide rollers 16 are rotatably arranged between the cabinet 10 and the frame plate 11. A correction component 48 is arranged between the cabinet 10 and the frame plate 11 on one side of the feeding roller 12. The label paper tape 15 is guided by the three guide rollers 16 through the correction component 48 for correction, and then passes through the two sets of circular die-cutting components in sequence, and then passes through the slitting component 17 and is wound on the rewinding roller 14. The two sets of circular die-cutting components respectively perform die-cutting processing on the face paper and the back paper of the label paper tape 15.

[0039] By setting the unwinding roller 12 and the rewinding roller 14, the unwinding and rewinding of the label paper tape can be realized. By setting two sets of circular die-cutting components that respectively die-cut the face paper and the back paper of the label paper tape 15, it is possible to ensure that the die-cutting marks fully penetrate the face paper and the back paper of the label paper tape 15 to ensure the die-cutting quality. At the same time, it can also reduce the pressure applied to the label paper tape 15 during a single die-cutting, thereby reducing the problem of the middle adhesive layer of the label paper tape 15 overflowing from the edge due to violent extrusion. This avoids the problem of adhesive layer overflow causing the label paper tapes 15 to stick together or the label paper tape 15 surface to be contaminated by residual adhesive after rewinding.

[0040] like Figure 1-13 As shown, four adhesive removal rollers 40 are arranged between the cabinet 10 and the shelf 11. The label paper strip 15 passes through the circular die-cutting component located at the lower position from top to bottom to die-cut the face paper. After passing through the circular die-cutting component located at the lower position, the label paper strip 15 is guided upward by two guide rollers 16 and its face paper rolls in contact with the two adhesive removal rollers 40. The label paper strip 15 passes through the circular die-cutting component located at the higher position from bottom to top to die-cut the back paper. After passing through the circular die-cutting component located at the higher position, the label paper strip 15 is guided by guide rollers 16 to the slitting component 17 and its back paper rolls in contact with the two adhesive removal rollers 40.

[0041] After the label paper tape 15 is die-cut by two sets of circular die-cutting parts, two sets of glue removal rollers 40 are set to roll and contact the face paper and back paper of the label paper tape 15 respectively. The residual glue overflowing from the back paper due to compression is scraped off after the two die-cutting processes, further eliminating residual glue and avoiding the residual glue from affecting the quality of the rewound label paper tape 15.

[0042] like Figure 1-13 As shown, the de-adhesive roller 40 includes a shaft 44, with end caps 41 at both ends of the shaft 44. A mesh layer 42 is arranged between the two end caps 41 and surrounds the outside of the shaft 44. In this embodiment, the mesh layer 42 is preferably made of wavy stainless steel wire, with the stainless steel wires overlapping each other to form a scale-like structure. An elastic bushing 43 made of hard rubber is provided between the shaft 44 and the mesh layer 42. A threaded sleeve 38 is fixedly connected to the corresponding position of the shaft part of each shaft 44 on the cabinet 10. A threaded shaft head 39 is threadedly connected to the threaded sleeve 38. The end of the threaded shaft head 39 is rotatably connected to the shaft part of the shaft 44.

[0043] By setting a mesh layer 42 with a scale-like structure, during the rolling contact between the adhesive removal roller 40 and the label paper tape 15, the mesh layer 42 is compressed and deformed at the contact point with the label paper tape 15. The scale-like stainless steel wires squeeze and contract against each other, and the residual adhesive on the surface of the label paper tape 15 is clamped by the gaps between the wires and peeled off from the surface of the label paper tape 15 during the rolling process, thus achieving the effect of removing residual adhesive. Compared with the traditional method of wrapping gauze on the guide roller to adhere and remove residual adhesive, this solution can effectively improve the efficiency and cleanliness of removing residual adhesive, and avoid the problem that the residual adhesive is not removed by the gauze but instead the fibers on the gauze are removed and adhered to the surface of the label paper tape 15.

[0044] Meanwhile, by setting the threaded sleeve 38 and the threaded shaft head 39, the entire adhesive removal roller 40 can be easily removed for cleaning and maintenance. Compared with the traditional method of wrapping gauze, this method can improve maintenance efficiency and reduce maintenance time.

[0045] The circular die-cutting component includes a pressure roller 22 and a die-cutting plate roller 23. A meshing cooperating gear 32 is provided between the shafts of the pressure roller 22 and the die-cutting plate roller 23. A tension plate 24 is respectively provided through the shafts at both ends of the pressure roller 22 and the die-cutting plate roller 23. A bearing 27 is provided at the connection between the pressure roller 22, the die-cutting plate roller 23 and the tension plate 24. A shaft groove 26 is provided on the tension plate 24 at the corresponding position of the shaft of the pressure roller 22. The corresponding bearing 27 on the pressure roller 22 can slide and adjust within the shaft groove 26. An adjusting bolt 28 is threadedly connected to the end of the pressure roller 22 near the shaft groove 26. The end of the adjusting bolt 28 abuts against the outer ring of the corresponding bearing 27. The surfaces of the two corresponding die-cutting plate rollers 23 in the two sets of circular die-cutting components are respectively provided with a first die-cutting blade 33 for die-cutting the face paper and a second die-cutting blade 34 for die-cutting the base paper.

[0046] By setting the first die-cutting blade 33 and the second die-cutting blade 34, the face paper and the back paper of the label paper strip 15 can be die-cut respectively. The setting of the shaft groove 26 and the adjusting bolt 28 can adjust the gap between the pressure roller 22 and the die-cutting plate roller 23, thereby adapting to the die-cutting processing of label paper strips 15 with different thicknesses and materials, and improving the applicability of this device.

[0047] like Figure 1-13 As shown, horizontally arranged slide grooves 19 are provided on the cabinet 10 and the shelf 11 at each group of circular die-cutting components. Each pressure roller 22 is connected to a first bearing 20 at both ends, and each die-cutting roller 23 is connected to a second bearing 21 at both ends. Each first bearing 20 and second bearing 21 are slidably connected to the corresponding slide groove 19. A seat plate 30 is provided between the cabinet 10 and the shelf 11 at the opening of each slide groove 19. A through hole 31 is provided on each seat plate 30 at the corresponding position of the tension plate 24. An electric push rod 29 is provided on each seat plate 30 at the corresponding position of the tension plate 24. The rod head of each electric push rod 29 passes through the through hole 31 and is fixedly connected to the corresponding tension plate 24. The transmission structure in the cabinet 10 is preferably a chain drive structure with a tension wheel at the die-cutting roller 23 and the pressure roller 22 to ensure that the pressure roller 22 and the die-cutting roller 23 always receive power input during the sliding adjustment along the slide groove 19.

[0048] like Figure 1-13As shown, a frame-shaped blade 35 is provided on the surface of the first die-cutting blade 33 corresponding to the edge of the label paper strip 15, and a cross-shaped blade 36 is provided on the surface of the second die-cutting blade 34 corresponding to the edge of the label paper strip 15. Notches 37 are evenly spaced on the blade of the cross-shaped blade 36. In this embodiment, the width of the notches 37 is preferably 5mm and the spacing is 5mm. The length of the blade of the cross-shaped blade 36 is the same as the side length of the frame-shaped blade 35. Two supports 45 are provided on the cabinet 10 above the feeding roller 12, on both sides of the front and back paper of the label paper strip 15. A visual recognition sensor 46 pointing to the label paper strip 15 and an illumination lamp 47 are respectively provided on the two supports 45.

[0049] By setting the frame-shaped blade 35 and the cross-shaped blade 36, corresponding marks are left on the face paper and back paper of the label paper strip 15, respectively. The strong light emitted by the illumination lamp 47 illuminates the edge of the label paper strip 15, so that the marks produced by the frame-shaped blade 35 and the cross-shaped blade 36 are superimposed and imaged in the visual recognition sensor 46. The visual recognition sensor 46 identifies the overlap state of the marks of the frame-shaped blade 35 and the cross-shaped blade 36 to determine whether the two sets of circular die-cutting parts accurately repeat die-cutting at the same position, and feeds back to adjust the extension and retraction of the electric push rod 29 so that the corresponding circular die-cutting parts slide along the slide groove 19, thereby adjusting the die-cutting position of the circular die-cutting parts to ensure that the marks are completely overlapped and thus ensure the processing quality. By setting the notch 37, the visual recognition sensor 46 and the control system can be assisted in judging the deviation distance to accurately and quickly control the extension and retraction of the electric push rod 29.

[0050] In this embodiment, initially, the device is connected to the power supply. The cabinet 10 is equipped with power components, transmission structure and control system to drive the operation of each component. The operator puts the roll of label paper tape 15 to be processed onto the feeding roller 12, and then passes the label paper tape 15 through each guide roller 16, the correction component 48, the circular die-cutting component, each glue removal roller 40 and the slitting component 17 in sequence before winding and fixing it onto the rewinding roller 14, ensuring that the tension of the label paper tape 15 is uniform and appropriate at all points.

[0051] During operation, the unwinding roller 12 rotates to drive the label paper tape 15 to unwind, while the rewinding roller 14 rotates to rewind the label paper tape 15. The label paper tape 15 continuously passes through the correction component 48, the circular die-cutting component, and the slitting component 17. When the label paper tape 15 passes through the correction component 48, it is calibrated and corrected by the correction component 48 to ensure that the label paper tape 15 is always accurately and stably fed. Then, the label paper tape 15 passes from top to bottom between the pressure roller 22 and the die-cutting plate roller 23 located at the lower position. The pressure roller 22 and the die-cutting plate roller 23 roll relative to each other and are ensured to rotate at the same speed and synchronously by the cooperating gear 32. At this time, the face paper of the label paper tape 15 contacts the first die-cutting blade 33. The first die-cutting blade 33 performs die-cutting on the face paper of the label paper tape 15 to form an imprint. At the same time, the frame-shaped blade 35 on the first die-cutting blade 33 presses a frame-shaped indentation on the edge of the face paper of the label paper tape 15.

[0052] Then, the label paper strip 15 is guided upward by two guide rollers 16 and passes from bottom to top between the pressure roller 22 and the die-cutting roller 23 located at a high position. At this time, the bottom paper of the label paper strip 15 contacts the second die-cutting blade 34. The second die-cutting blade 34 performs die-cutting on the bottom paper of the label paper strip 15. At the same time, the cross-shaped blade 36 on the second die-cutting blade 34 presses a cross-shaped indentation at the corresponding position of the frame-shaped indentation on the edge of the bottom paper of the label paper strip 15. Due to the setting of the notch 37, the cross-shaped indentation is in the shape of a dotted line.

[0053] Then, the label tape 15 is guided by the guide roller 16 to the slitting component 17. During this process, it passes by the visual recognition sensor 46 and the lighting lamp 47. The lighting lamp 47 generates strong light to illuminate the edge of the label tape 15, causing the frame-shaped crease and the cross-shaped crease to overlap. The visual recognition sensor 46 captures the image during the transport of the label tape 15. By comparing the overlap state of the frame-shaped crease and the cross-shaped crease, it can be determined whether the positions of the two die-cutting processes correspond accurately. If there is a deviation that prevents the two creases from completely overlapping, the deviation direction of the frame-shaped crease and the cross-shaped crease can be determined to determine whether there is a deviation in the die-cutting action of the label tape 15 face paper or the die-cutting action of the label tape 15 back paper.

[0054] Then, after the visual recognition sensor 46 transmits the collected data to the control system, the control system adjusts the corresponding electric push rod 29, driving the corresponding pressure roller 22 and die-cutting plate roller 23 to adjust within the range of the slide groove 19, thereby adjusting the die-cutting position to ensure that the two die-cuts can completely overlap to ensure die-cutting quality. The notch 37 makes the cross-shaped mark a simple ruler. The control system can accurately control the extension and retraction of the electric push rod 29 by comparing and calculating the image information collected by the visual recognition sensor 46, ensuring adjustment accuracy.

[0055] After the label tape 15 undergoes die-cutting of the face paper and the back paper, its die-cut surfaces come into rolling contact with the two adhesive removal rollers 40. When the label tape 15 passes through the adhesive removal rollers 40, the contact area between the mesh layer 42 and the surface of the label tape 15 is compressed and undergoes slight deformation. The metal wires that make up the mesh layer 42 tighten and scrape against each other, thereby allowing the gaps between the metal wires to grab the residual adhesive that leaks out of the surface of the label tape 15 due to compression. During the rolling of the adhesive removal rollers 40, the residual adhesive is peeled off from the surface of the label tape 15, thus removing the residual adhesive and avoiding the problem of the residual adhesive sticking or contaminating the surface of the label tape 15 after rewinding. Compared with the traditional method of wrapping gauze on the roller to adhere and remove residual adhesive, this solution effectively ensures the residual adhesive removal effect and avoids the problem.

[0056] While the mesh layer 42 is deformed under pressure, the elastic bushing 43 provides elastic support for the mesh layer 42. When the mesh layer 42 is separated from the label paper tape 15, the elastic bushing 43 can push the mesh layer 42 back to its original position, thus preventing the mesh layer 42 from deforming and shrinking continuously during long-term pressure, which would cause the diameter of the shaft 44 to change.

[0057] Finally, the label paper tape 15 is cut by the slitting component 17, and the edges of the label paper tape 15 are cut off, leaving only the die-cut imprint position. Then it is rewound by the rewinding roller 14 to complete the entire circular die-cutting work. After long-term use, residual glue on the surface of the glue removal roller 40 needs to be cleaned. The operator can twist the threaded shaft head 39 to separate the glue removal roller 40 from the end of the threaded shaft head 39, and then easily remove the glue removal roller 40 from between the cabinet 10 and the shelf 11, so as to clean and maintain the glue removal roller 40. This ensures that the glue removal roller 40 can perform glue removal work well for a long time. Compared with the traditional method of wrapping gauze, the maintenance method of this solution is simpler and more efficient.

[0058] The aforementioned cutting component 17, correction component 48, cabinet 10, and the power components, transmission structure, and control system in cabinet 10 are all mature existing technologies, which are not shown in the attached drawings. Their structure and working principle will not be described in detail here.

[0059] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0060] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0061] The foregoing description illustrates and describes several preferred embodiments of this application. However, as previously stated, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A label double-sided co-cutting circular die-cutting machine, characterized in that, The label double-sided co-cutting circle die-cutting machine includes: A cabinet (10) is provided with a shelf (11) on one side. A feeding roller (12) and a turntable (13) are driven on the side of the cabinet (10) near the shelf (11). Two rewinding rollers (14) are symmetrically connected to the turntable (13). Two sets of circular die-cutting components are provided between the cabinet (10) and the shelf (11). The cabinet (10) and the shelf (11) are located near each set of circular die-cutting components. Multiple guide rollers (16) are arranged nearby. Label paper tape (15) is threaded on the feeding roller (12). The label paper tape (15) passes around each guide roller (16) and the circular die-cutting component and finally wraps around the outside of the rewinding roller (14). Multiple glue removal rollers (40) are respectively arranged between the cabinet (10) and the frame (11). The face paper and back paper of the label paper tape (15) roll in contact with the surface of the corresponding glue removal roller (40).

2. The label double-sided co-cutting circle die-cutting machine according to claim 1, characterized in that, A slitting component (17) is provided between the cabinet (10) and the shelf (11) near the rewinding roller (14). Slitting guide rollers (18) are provided on both sides of the slitting component (17). A correction component (48) is provided between the feeding roller (12) and the circular die-cutting component. The label paper tape (15) passes through the correction component (48) and the slitting component (17) respectively. Three guide rollers (16) are provided near the correction component (48) to guide the label paper tape (15) to pass through the correction component (48) stably.

3. The label double-sided co-cutting circle die-cutting machine according to claim 2, characterized in that, Two circular die-cutting components are located at the end of the cabinet (10) and the shelf (11) away from the turntable (13) and are distributed at different heights. The label paper strip (15) passes through the set of circular die-cutting components located at the lower position from top to bottom to die-cut the face paper of the label paper strip (15). The label paper strip (15) passes through the set of circular die-cutting components located at the higher position from bottom to top to die-cut the bottom paper of the label paper strip (15).

4. The label double-sided co-cutting circle die-cutting machine according to claim 2, characterized in that, The circular die-cutting component includes a pressure roller (22) and a die-cutting plate roller (23). The shafts of the pressure roller (22) and the die-cutting plate roller (23) are respectively fixedly connected with meshing cooperating gears (32). The surfaces of the two die-cutting plate rollers (23) in the two sets of circular die-cutting components are respectively provided with a first die-cutting blade (33) and a second die-cutting blade (34) for die-cutting the face paper and back paper of the label paper tape (15) respectively. Each pressure roller (22) is provided with a first bearing seat (20) at both ends, and each die-cutting plate roller (23) is provided with a second bearing seat (21) at both ends. The cabinet (10) and the shelf (11) are provided with a horizontally arranged slide groove (19) at the corresponding position of each set of circular die-cutting components. Each first bearing seat (20) and second bearing seat (21) are slidably arranged in the corresponding slide groove (19).

5. The label double-sided co-cutting circle die-cutting machine according to claim 4, characterized in that, The first die-cutting blade (33) has a frame-shaped blade (35) on its surface corresponding to the edge of the label paper strip (15), and the second die-cutting blade (34) has a cross-shaped blade (36) on its surface corresponding to the edge of the label paper strip (15). The cross-shaped blade (36) has notches (37) evenly spaced on its blade. The cabinet (10) has two supports (45) located above the feeding roller (12) on both sides of the label paper strip (15) and the backing paper, respectively. The two supports (45) are respectively equipped with a visual recognition sensor (46) pointing to the label paper strip (15) and a lighting lamp (47). The visual recognition sensor (46) is used to identify the overlapping state of the indentations produced by the frame-shaped blade (35) and the cross-shaped blade (36) on the edge of the label paper strip (15).

6. The label double-sided co-cutting circle die-cutting machine according to claim 5, characterized in that, Each of the pressure rollers (22) and the die-cutting rollers (23) has a pull plate (24) passing through its shaft. A bearing (27) is provided at the connection between the shaft of the pressure roller (22) and the die-cutting roller (23) and the pull plate (24). A seat plate (30) is provided between the cabinet (10) and the shelf (11) at the opening of the slide groove (19). A through hole (31) is provided on the seat plate (30) at each pull plate (24). An electric push rod (29) is provided on the seat plate (30) at each pull plate (24). The rod head of the electric push rod (29) passes through the through hole (31) and is fixedly connected to the corresponding pull plate (24).

7. The label double-sided co-cutting circle die-cutting machine according to claim 6, characterized in that, The pull plate (24) has a shaft groove (26) at the corresponding position of the pressure roller (22). The bearing (27) provided on the pressure roller (22) can slide along the shaft groove (26) to adjust its position. The end of the pull plate (24) away from the electric push rod (29) is threaded with an adjusting bolt (28). The end of the adjusting bolt (28) passes into the shaft groove (26) and abuts against the outer ring of the corresponding bearing (27).

8. The label double-sided co-cutting circle die-cutting machine according to claim 6, characterized in that, A threaded sleeve (38) is provided on the frame plate (11) at the corresponding position of each degumming roller (40). Each threaded sleeve (38) is threadedly connected to a threaded shaft head (39). The end of each threaded shaft head (39) is rotatably connected to the end of the corresponding degumming roller (40).

9. The label double-sided co-cutting circle die-cutting machine according to claim 8, characterized in that, The adhesive removal roller (40) includes a shaft (44), with two end caps (41) at both ends of the shaft (44). A mesh layer (42) is provided between the two end caps (41) and surrounds the outside of the shaft (44). The mesh layer (42) is used to scrape and remove residual adhesive from the surface of the label tape (15). The shaft (44) is padded between the shaft (44) and the mesh layer (42).

10. The label double-sided co-cutting circle die-cutting machine according to claim 9, characterized in that, The shaft (44) is made of hard rubber, and the mesh layer (42) is made of stainless steel wire. The mesh layer (42) is composed of multiple sets of wavy wires interlaced and stacked in a scale-like arrangement.

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