A guide mechanism for printing a package decoration

Abstract

The utility model relates to a kind of guiding mechanism for packaging decoration printing, it is installed on the rack below winding roller, fixed with tube core on winding roller, tube core length is consistent with the width of roll, including installation vertical board, mounting seat, lifting frame and drive assembly and alignment component, the rack on both sides of printing machine is provided with installation vertical board, and mounting seat is adjustably set on each installation vertical board, and lifting frame is elastically slid between the mounting seat of both sides in up-down direction;Lifting frame is arranged below winding roller, and the top of lifting frame is respectively provided with alignment component, and the alignment component of both ends is cooperated with clamping tube core, and alignment component is abutted in tube core end portion;At least one drive assembly is arranged on the top of lifting frame between both ends alignment component, drive assembly is in rolling contact with tube core circumferential surface, and the horizontal height of drive assembly is lower than the horizontal height of alignment component.

Description

Technical Field

[0001] This utility model relates to the field of printing press technology, and in particular to a guiding mechanism for printing packaging and decoration products. Background Technology

[0002] Printing on packaging and decorative materials, such as roll materials like plastic film, aluminum foil, and paper, inevitably requires printing presses. Depending on the type of decorative product, gravure printing presses, flexographic printing presses, or rotary offset printing presses can be selected accordingly. All of these printing presses are equipped with a take-up roller, which is driven by a motor. After printing, the product is finally wound into a large roll at the center of the take-up roller for subsequent processes such as slitting and bag making.

[0003] Taking web-based printing presses for paper printing as an example, the take-up roller on the printing press has an air-expanding shaft structure. A core tube is fixed on the take-up roller. After the take-up roller is inflated, it can firmly fix the core tube, achieving stable winding. During the winding process, the roll material is wound around the core tube, which provides support for the roll material and prevents it from collapsing.

[0004] After printing and winding, the winding roller and the end face of the roll material may not be a neat plane. Uneven winding may be due to problems with the substrate, equipment or machinery, or process and operation, which may cause the material to be subjected to uneven lateral force or interlayer slippage during the winding process, ultimately resulting in the roll material edge offset and the two ends being difficult to align.

[0005] Therefore, in existing technologies, baffles are often installed at both ends of the core to forcibly restrict the roll material and prevent end-face misalignment. For example, in a gravure printing machine winding mechanism disclosed in patent publication CN220519650U, the winding alignment device works by having both ends of the film abut against an alignment panel during winding, thereby aligning the edges of the film and ensuring that the ends of the wound film are flat. However, since the alignment panel extends radially along the winding roller, the roll material is constantly in contact with and rubs against the alignment panel, and the center of the roll is wound first, resulting in the longest contact and friction time with the alignment panel, which may affect the quality of the roll material. Summary of the Invention

[0006] To address the problem of difficulty in aligning the ends of paper during winding on a take-up roller, this invention provides a guiding mechanism for printing packaging and decoration materials. The guiding mechanism is elastically slidably connected to a frame below the take-up roller. It rolls in contact with the surface of the roll material. As the roll material is wound, the guiding mechanism slides downwards, with both ends rolling in contact with the ends of the roll material, guiding the roll material's end face. This ensures that the roll material's end face remains flush and minimizes friction on the roll material's end face.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A guiding mechanism for packaging decoration printed matter printing, which is installed on a frame below a winding roller, a tube core is fixed on the winding roller, and the length of the tube core is consistent with the width of a web, comprising vertical mounting plates, mounting seats, a lifting frame, a driving assembly and alignment assemblies, wherein the vertical mounting plates are arranged on the frames on both sides of a printing press, which facilitates the installation and connection of the entire guiding mechanism and the frames; each vertical mounting plate is provided with the mounting seat in an up-and-down adjustable manner, which facilitates the adjustment of the height position of the mounting seat, and the lifting frame is elastically slidably connected between the mounting seats on both sides in the vertical direction; the lifting frame is arranged below the winding roller, the alignment assemblies are respectively arranged at both ends of the top of the lifting frame, the alignment assemblies at both ends cooperate to clamp the tube core, which facilitates guiding the web on the tube core and ensuring the end face alignment of the web, and the alignment assemblies abut against the end of the tube core; at least one driving assembly is arranged on the top of the lifting frame between the alignment assemblies at both ends, the driving assembly is in rolling contact with the circumferential surface of the tube core, which facilitates driving the lifting frame to move downward, and the horizontal height of the driving assembly is lower than that of the alignment assemblies; the web on the tube core is continuously wound, pushing the lifting frame to gradually slide vertically downward.

[0008] further, adjusting vertical slots are symmetrically formed on both sides of the vertical mounting plate, the adjusting vertical slots penetrate through the vertical mounting plate, the cross section of each adjusting vertical slot is of a "convex" shape, the longitudinal section of each adjusting vertical slot is in the shape of a long strip hole, and an adjusting bolt is penetrated in the adjusting vertical slot. The adjusting vertical slot with special structural design facilitates hiding and installing the adjusting bolt.

[0009] further, the cross section of the mounting seat is in an inverted L-shape, the vertical section of the mounting seat fits against the vertical mounting plate, the adjusting bolt horizontally extends out of the adjusting vertical slot and then penetrates through the vertical section of the mounting seat to be connected with a nut, tightening the nut facilitates fixing the mounting seat, a linear bearing is arranged on the horizontal section of the mounting seat, and the lifting frame is penetrated between the linear bearings on the two mounting seats, which improves the sliding smoothness of the lifting frame.

[0010] further, the lifting frame comprises a lifting plate and lifting rods, the lifting rods are arranged at both ends of the lifting plate, the lifting rods are vertically arranged below the lifting plate, the lifting rods downwardly penetrate through the mounting seat and are connected with a pedal, a compression spring is sleeved outside the lifting rod between the lifting plate and the mounting seat, and the compression spring drives the lifting plate to move upward. The pedal facilitates driving the lifting frame to move downward.

[0011] further, the driving assembly and the alignment assemblies are adjustably arranged on the lifting plate in the horizontal direction.

[0012] further, an adjusting transverse slot is formed on the lifting plate, the adjusting transverse slot penetrates through the lifting plate, and the adjusting transverse slot is in the shape of a long strip hole; which provides conditions for the horizontal movement of the driving assembly and the alignment assemblies; The alignment assembly includes an adjustment seat and an alignment roller. The adjustment seat is engaged on both sides of a lifting plate and slides horizontally along the lifting plate. The engagement helps to restrict the rotation of the adjustment seat. The adjustment seat has a vertical shaft in the middle. The vertical shaft passes downward through the adjustment groove and is connected to a nut. The alignment roller is vertically arranged on the adjustment seat and abuts against the end of the tube core.

[0013] Furthermore, the drive assembly includes an adjustment seat two and a drive wheel. The adjustment seat two is horizontally adjustable and is mounted on the lifting plate. The adjustment seat two has the same structure as the adjustment seat one. The drive wheel is mounted on both sides of the upper part of the adjustment seat two and rolls along the circumferential surface of the tube core. The end face of the alignment roller protrudes upward from the circumferential surface of the drive wheel.

[0014] The beneficial effects of this utility model through the above technical solution are: This utility model features a rationally designed structure. A lifting frame is elastically slidably connected to the upper and lower parts of the frame, located below the take-up roller. The lifting frame is equipped with a drive assembly and an alignment assembly. As the roll material gradually winds onto the core of the take-up roller, the drive assembly pushes the lifting frame downwards. The distance between the two alignment assemblies on the lifting frame is adjustable to accommodate roll materials of different widths. After adjustment, the alignment rollers of the alignment assemblies rest against the end of the core, facilitating the guidance of the roll material on the core and ensuring the flushness of the roll material's end face, thus preventing deviation during winding. Furthermore, the movement of the alignment assemblies driven by the lifting frame continuously guides the newly wound roll material, maintaining a constant contact area and avoiding frictional wear caused by large-area contact with the roll material's end face. Attached Figure Description

[0015] Figure 1 This is a front view of the overall structure of a guiding mechanism for printing packaging and decoration materials according to this utility model.

[0016] Figure 2 This is a front view of the mounting base of a guide mechanism for printing packaging and decoration printed materials according to this utility model.

[0017] Figure 3 This is a side view of the mounting base of a guide mechanism for printing packaging and decoration printed materials according to this utility model.

[0018] Figure 4 This is a top view of the lifting plate of a guiding mechanism for printing packaging and decoration printed materials according to this utility model.

[0019] Figure 5 This is a schematic diagram illustrating the application of a guiding mechanism for printing packaging and decorative printed materials according to this utility model.

[0020] The reference numerals in the accompanying drawings are: 1 winding roller, 2 tube core, 3 vertical mounting plate, 4 mounting seat, 5 lifting frame, 51 lifting plate, 52 lifting rod, 6 driving assembly, 61 second adjustment seat, 62 driving wheel, 63 wheel frame, 7 alignment assembly, 71 first adjustment seat, 72 alignment roller, 73 vertical shaft, 8 vertical adjustment slot, 9 adjustment bolt, 10 linear bearing, 11 compression spring, 12 horizontal adjustment slot, 13 foot pedal. Detailed Description of Embodiments

[0021] The following is a detailed description of specific embodiments of the present utility model in conjunction with the accompanying drawings: as shown in Figures 1-5 , a guide mechanism for packaging and decorative printing is installed on the frame below the winding roller 1, and a tube core 2 is fixed on the winding roller 1, wherein the length of the tube core 2 is defined to be consistent with the width of the web; the web is a product to be wound on the tube core 2 during the printing process. The guide mechanism comprises a vertical mounting plate 3, a mounting seat 4, a lifting frame 5, a driving assembly 6 and an alignment assembly 7.

[0022] The vertical mounting plate 3 is a rectangular plate body. When installed, the vertical mounting plates 3 are respectively arranged on the frames on both sides of the printing press, and the vertical mounting plate 3 can be connected and fixed with the frame by bolts.

[0023] Each vertical mounting plate 3 is provided with a mounting seat 4 in an up-down adjustable manner. The cross section of the mounting seat 4 is in an L-shape, and the vertical section of the mounting seat 4 is attached to the vertical mounting plate 3. The mounting seat 4 can adjust the vertical height relative to the vertical mounting plate 3. Specifically, vertical adjustment slots 8 are symmetrically opened on both sides of each vertical mounting plate 3, the vertical adjustment slots 8 penetrate through the vertical mounting plate 3, the cross section of the vertical adjustment slot 8 is in a convex shape, so that the vertical adjustment slot 8 presents the characteristic that one end has a larger size and the other end has a smaller size in the thickness direction of the vertical mounting plate 3; the longitudinal section of the vertical adjustment slot 8 is in the shape of a long strip hole.

[0024] An adjustment bolt 9 is penetrated in the vertical adjustment slot 8, the head of the adjustment bolt 9 is hexagonal, the head of the adjustment bolt 9 is located in the end of the vertical adjustment slot 8 with a larger size, and is restricted by the vertical adjustment slot 8, so the adjustment bolt 9 cannot rotate, and can only move up and down in the vertical adjustment slot 8. The adjustment bolt 9 is hidden installed and does not protrude from the surface of the vertical mounting plate 3. After the adjustment bolt 9 horizontally extends out of the vertical adjustment slot 8, it passes through the vertical section of the mounting seat 4 and is connected with a nut. After tightening the nut, the mounting seat 4 can no longer slide up and down; after loosening the nut, the mounting seat 4 can slide up and down, and the mounting seat 4 drives the adjustment bolt 9 and the corresponding nut to move up and down together, thereby realizing the adjustment of the height of the mounting seat 4.

[0025] A lifting frame 5 is elastically slidably connected between the two mounting seats 4 on both sides. That is, with the mounting seats 4 fixed in position, the lifting frame 5 can slide up and down relative to the mounting seats 4. The lifting frame 5 is arranged below the take-up roller 1. The lifting frame 5 includes a lifting plate 51 and lifting rods 52. The lifting plate 51 is a horizontally arranged plate body. Lifting rods 52 are provided at both ends of the lifting plate 51. The lifting rods 52 are arranged vertically below the lifting plate 51.

[0026] During installation, the upper end of the lifting rod 52 passes through the lifting plate 51. Round nuts are threaded onto the lifting rod 52 above and below the lifting plate 51. Tightening the two round nuts clamps the lifting plate 51, thus fixing the lifting plate 51 and the lifting rod 52 in place. The lifting rod 52 passes vertically downwards through the mounting base 4 and slides within it. Specifically, a linear bearing 10 is installed on the horizontal section of the mounting base 4, and a lifting frame 5 passes between the linear bearings 10 on the two mounting bases 4. That is, the lifting rod 52 passes through the linear bearing 10, improving the smoothness of the sliding of the lifting frame 5.

[0027] A compression spring 11 is provided around the lifting rod 52 between the lifting plate 51 and the mounting base 4. The compression spring 11 can drive the lifting plate 51 to move upward. When moving upward, the lifting plate 51 and the lifting rod 52 move upward together. In order to prevent the lifting rod 52 from detaching from the mounting base 4 after moving upward, the lifting rod 52 passes vertically downward through the mounting base 4 and is connected to a foot pedal 13.

[0028] Specifically, the foot pedal 13 can be a quarter-circular plate. The foot pedal 13 passes through the lower end of the lifting rod 52. The lifting rod 52 above and below the foot pedal 13 is also threaded with round nuts. After the two round nuts are tightened, the foot pedal 13 is clamped, thus achieving the connection and fixation between the foot pedal 13 and the lifting rod 52. Therefore, under the restriction of the foot pedal 13, the lifting rod 52 will not detach from the mounting base 4, and a person can step down on the foot pedal 13 to move the entire lifting frame 5 downward through external force.

[0029] Alignment components 7 are respectively provided at both ends of the lifting plate 51 at the top of the lifting frame 5. The alignment components 7 at both ends cooperate to clamp the core tube 2 and abut against the end of the core tube 2, thereby restricting the roll material wound on the core tube 2. During installation, the alignment components 7 are horizontally adjustable on the lifting plate 51. Specifically, an adjustment transverse groove 12 is provided on the lifting plate 51. The adjustment transverse groove 12 penetrates the lifting plate 51 and is an elongated hole. The alignment components 7 can move along the adjustment transverse groove 12, thereby the spacing between the alignment components 7 at both ends is adjustable to adapt to roll materials of different widths.

[0030] In this embodiment, the alignment assembly 7 includes an adjustment seat 71 and an alignment roller 72. The adjustment seat 71 has an inverted U-shaped cross-section. The two sides of the adjustment seat 71 are engaged with the lifting plate 51, so the adjustment seat 71 cannot rotate horizontally, but can only slide horizontally along the lifting plate 51. The adjustment seat 71 has a vertical shaft 73 in the middle. The vertical shaft 73 passes downward through the adjusting transverse groove 12 and is connected to a nut. Tightening the nut can fix the adjustment seat 71, and conversely, the adjustment seat 71 can slide. The alignment roller 72 is vertically arranged on the adjustment seat 71. The alignment roller 72 includes a roller shaft and a roller cylinder. The roller cylinder is rotatably arranged outside the roller shaft. The roller cylinder of the alignment roller 72 abuts against the end of the tube core 2.

[0031] At least one drive assembly 6 is provided on the top of the lifting frame 5 between the two end alignment components 7. Here, there are two drive assemblies 6, which are evenly arranged along the length of the core 2. The drive assemblies 6 are in rolling contact with the circumferential surface of the core 2. The function of the drive assemblies 6 is to push the lifting frame 5 to gradually slide vertically downward as the roll material on the core 2 is continuously wound up.

[0032] During installation, the drive assembly 6 is horizontally adjustable on the lifting plate 51, thus allowing for adjustment of its installation position. The drive assembly 6 includes an adjustment seat 2 61 and a drive wheel 62. The adjustment seat 2 61 is horizontally adjustable on the lifting plate 51. The adjustment seat 2 61 has the same structure, installation method, and adjustment method as the adjustment seat 1 71, which will not be described further here.

[0033] Drive wheels 62 are installed on both sides of the upper part of the adjusting seat 2 61. Specifically, a wheel frame 63 with a cross-shaped cross section is installed on the upper part of the adjusting seat 2 61. The vertical part of the wheel frame 63 is a plate, and the horizontal part is an axle. The drive wheels 62 are installed on the axle of the wheel frame 63. The drive wheels 62 have a bearing at their center. The outer circumference of the drive wheels 62 is made of rubber. The drive wheels 62 can be regarded as rubber wheels. The drive wheels 62 roll along the circumference of the tube core 2.

[0034] It is particularly important to note that the horizontal height of the drive assembly 6 is lower than that of the alignment assembly 7, meaning that the upper end of the alignment roller 72 protrudes upwards from the circumference of the drive wheel 62. The purpose is that after the drive wheel 62 is subjected to the elastic force of the compression spring 11 and presses upwards against the surface of the core 2, the upper end of the alignment roller 72 can pass over the surface of the core 2 and approach the center of the core 2. This ensures that the roll material is positioned correctly from the moment it is initially wound onto the core 2, guaranteeing that the roll material is flush with the end face of the core 2.

[0035] The principle of this invention is as follows: First, the user steps on the foot pedal 13, causing the lifting frame 5 to move downwards. At this time, the core tube 2 can be installed on the take-up roller 1, ensuring that the length of the core tube 2 is consistent with the width of the roll material and that the core tube 2 is located at a designated position on the take-up roller 1. The end of the roll material can be initially wound around the core tube 2. Then, the foot pedal 13 is released, and the lifting frame 5 moves upwards under the push of the compression spring 11 until the drive wheel 62 abuts against the surface of the core tube 2. At this point, the position of the alignment component 7 is adjusted to ensure that the alignment roller 72 abuts against the end of the core tube 2, facilitating subsequent guidance of the roll material.

[0036] As the printing process progresses, the length of the roll material on the core 2 increases, directly resulting in an increase in the roll material's diameter. As the roll material diameter increases, it pushes the lifting frame 5 downwards, which in turn causes the alignment roller 72 to move downwards as well. This restricts the newly wound roll material, guides it, and ensures the flushness of the roll material's end faces. Because the alignment roller 72 moves during the roll material winding process, it only contacts the end face of the newly wound roll material, avoiding frictional wear caused by large-area contact with the roll material's ends.

[0037] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A guiding mechanism for printing packaging and decoration materials, mounted on a frame below a take-up roller (1), wherein a core (2) is fixed on the take-up roller (1), the length of the core (2) being consistent with the width of the roll material, characterized in that, The machine includes a mounting plate (3), a mounting base (4), a lifting frame (5), a drive assembly (6), and an alignment assembly (7). The mounting plates (3) are provided on the frame on both sides of the printing machine. Each mounting plate (3) is equipped with a mounting base (4) that can be adjusted up and down. The lifting frame (5) is elastically connected between the mounting bases (4) on both sides. The lifting frame (5) is arranged below the winding roller (1). The top two ends of the lifting frame (5) are respectively provided with the alignment components (7). The alignment components (7) at both ends cooperate to clamp the core (2) and abut against the end of the core (2). At least one driving component (6) is provided on the top of the lifting frame (5) between the two alignment components (7). The driving component (6) rolls in contact with the circumferential surface of the core (2). The horizontal height of the driving component (6) is lower than the horizontal height of the alignment component (7). The roll material on the core (2) is continuously wound up, pushing the lifting frame (5) to gradually slide vertically downward.

2. The guiding mechanism for printing packaging and decoration materials according to claim 1, characterized in that, The mounting vertical plate (3) has symmetrically opened adjustment vertical grooves (8) on both sides. The adjustment vertical grooves (8) penetrate the mounting vertical plate (3). The cross-section of the adjustment vertical grooves (8) is "convex" shaped. The longitudinal section of the adjustment vertical grooves (8) is a long strip hole shape. Adjustment bolts (9) are inserted inside the adjustment vertical grooves (8).

3. The guiding mechanism for printing packaging and decoration materials according to claim 2, characterized in that, The mounting base (4) has a "𠃍" shaped cross section. The vertical section of the mounting base (4) fits against the mounting vertical plate (3). The adjusting bolt (9) extends horizontally out of the adjusting vertical groove (8) and passes through the vertical section of the mounting base (4) to connect with the nut. A linear bearing (10) is provided on the horizontal section of the mounting base (4). The lifting frame (5) passes between the linear bearings (10) on the two mounting bases (4).

4. The guiding mechanism for printing packaging and decoration materials according to claim 1, characterized in that, The lifting frame (5) includes a lifting plate (51) and a lifting rod (52). The lifting rod (52) is provided at both ends of the lifting plate (51). The lifting rod (52) is arranged vertically below the lifting plate (51). The lifting rod (52) passes downward through the mounting base (4) and is connected to a foot pedal (13). The lifting rod (52) between the lifting plate (51) and the mounting base (4) is fitted with a compression spring (11). The compression spring (11) drives the lifting plate (51) to move upward.

5. A guiding mechanism for printing packaging and decoration materials according to claim 4, characterized in that, The driving assembly (6) and the alignment assembly (7) are horizontally adjustable on the lifting plate (51).

6. The guiding mechanism for printing packaging and decoration materials according to claim 4, characterized in that, The lifting plate (51) is provided with an adjustment groove (12), which passes through the lifting plate (51) and is a long strip hole. The alignment assembly (7) includes an adjustment seat (71) and an alignment roller (72). The adjustment seat (71) is engaged on both sides of the lifting plate (51) and slides horizontally along the lifting plate (51). The adjustment seat (71) has a vertical shaft (73) in the middle. The vertical shaft (73) passes downward through the adjustment groove (12) and is connected to a nut. The alignment roller (72) is vertically arranged on the adjustment seat (71) and abuts against the end of the tube core (2).

7. A guiding mechanism for printing packaging and decoration materials according to claim 6, characterized in that, The drive assembly (6) includes an adjustment seat two (61) and a drive wheel (62). The adjustment seat two (61) is horizontally adjustable on the lifting plate (51). The adjustment seat two (61) has the same structure as the adjustment seat one (71). The drive wheel (62) is arranged on both sides of the upper part of the adjustment seat two (61). The drive wheel (62) rolls along the circumferential surface of the tube core (2). The end face of the alignment roller (72) protrudes upward from the circumferential surface of the drive wheel (62).

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