A line pressing structure of a carton forming machine

Abstract

The utility model discloses a line pressing structure of carton forming machine relates to paperboard processing equipment technical field, including lower paper feed shaft, be provided with the section board above lower paper feed shaft, be provided with four groups of line pressing components under section board, line pressing component includes two line pressing wheels and two paper pressing wheels of front and back, and the middle part of line pressing wheel has the protruding for pressing line, and the axle center of line pressing wheel and paper pressing wheel all are installed with the pin shaft, and four pin shafts all rotatablely connect with the supporting plate, and the top of each supporting plate all is connected with the cylinder, four cylinders top are fixed as an organic whole through the connecting plate, and both sides of connecting plate top are provided with two groups of translation components, and the paper pressing wheel of non-line pressing position can individually descend and press the paperboard edge, avoids the paperboard insufficient restraint problem caused by the paper pressing wheel of outside lifting.

Description

Technical Field

[0001] This utility model relates to the technical field of cardboard processing equipment, specifically to a creasing structure for a carton forming machine. Background Technology

[0002] The carton forming machine uses crease rollers to press precise creases onto the surface of the cardboard, enabling the cardboard to bend regularly along the creases in subsequent folding processes, thus avoiding quality problems such as misalignment or breakage.

[0003] The creases on cartons are basically divided into four creases and two creases. Therefore, the crease structure of existing carton forming machines generally adopts a combination design of four sets of crease rollers and paper pressing rollers, and each set of crease rollers and paper pressing rollers achieves overall lifting through the same drive mechanism.

[0004] This structure works stably with standard cardboard requiring four creases, but it has limitations in actual production: when processing cardboard with a wider width but requiring fewer than four creases, only the middle two sets of crease rollers need to move downwards, while the outer two sets remain raised and inactive. Because the crease rollers and pressure rollers use an integrated lifting design, the outer two sets of pressure rollers rise with the crease rollers, failing to apply pressure to the edges of the cardboard. In this situation, the cardboard is only restrained by the middle two sets of pressure rollers during transport, lacking effective edge constraint. This makes it prone to lateral shift or longitudinal skewing due to uneven transport force, leading to inaccurate paper feeding. Furthermore, if the outer two sets of pressure rollers move downwards with the crease rollers, their contact with the paper surface can easily damage the cardboard. Utility Model Content

[0005] To solve the above problems, this utility model proposes a creasing structure for a carton forming machine, including a lower paper feeding shaft, a profile plate above the lower paper feeding shaft, and four sets of creasing components below the profile plate. The creasing components include two creasing wheels and two paper pressing wheels. The creasing wheels have a protrusion for creasing in the middle. Pins are installed at the shaft center of both the creasing wheels and the paper pressing wheels. The ends of the four pins are rotatably connected to support plates. A cylinder is connected to the top of each support plate. The tops of the four cylinders are fixed together by connecting plates. Two sets of translation components are arranged on both sides of the top of the connecting plates. The translation components include a knife holder vertical plate fixed to the top of the connecting plate. A motor mounting plate is fixed to the top of the knife holder vertical plate. A planetary reducer is mounted on the motor mounting plate. A spur gear is fixed to the outside of the output shaft of the planetary reducer. A toothed plate that meshes with the spur gear is fixed to the profile plate.

[0006] Furthermore, T-shaped connecting rails are fixed to the lower ends of the front and rear walls of the profile plate, and two sets of connecting sliders that are slidably connected to the connecting rails are fixed to the top of the connecting plate.

[0007] Furthermore, T-shaped vertical guide rails are fixed in the middle of the front and rear walls of the profile plate, and two sets of vertical sliders that are slidably connected to the two vertical guide rails are fixed on the inner walls of the two tool holder vertical plates respectively.

[0008] Furthermore, a drag chain support tube is fixed to the top of the profile plate, and a drag chain in the shape of a rectangular frame is fixed to the drag chain support plate. A through groove is opened in the middle of the drag chain, and a drag chain bracket is fixed to the side wall of the motor mounting plate. The drag chain bracket is inserted into the through groove and slidably connected with the drag chain.

[0009] Furthermore, deep groove ball bearings are installed between multiple pins and their respective pressure rollers and paper rollers, and pressure caps are fastened to the ends of the pins.

[0010] Furthermore, the pressure roller is a polyurethane sun roller.

[0011] The beneficial effects of this utility model are as follows: 1. Solving the paper feeding problem of traditional integrated lifting structures, the crease roller and paper pressing roller are controlled by independent cylinders, achieving functional separation between the two. When processing paperboard with fewer than 4 creases, the paper pressing rollers at non-crease positions can descend independently to press down on the edges of the paperboard, avoiding insufficient paperboard constraint caused by the outer paper pressing rollers lifting up, and effectively preventing inaccurate paper feeding and deviation.

[0012] 2. The entire crease-pressing component is moved horizontally via a servo motor-driven translation mechanism and a double-rail guide structure. The translation stroke can cover the needs of cardboard of different widths without the need to change parts, adapting to the switching needs of various carton sizes. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the medium voltage line component of this utility model; Figure 4 for Figure 1 A schematic diagram of the connection structure of a planetary gear reducer.

[0014] The reference numerals in the attached drawings are explained as follows: 1. Lower paper feed shaft; 2. Profile plate; 3. Planetary reducer; 4. Spur gear; 5. Motor mounting plate; 6. Cable chain bracket; 7. Cable chain; 8. Cable chain support tube; 9. Knife holder vertical plate; 10. Vertical plate guide rail; 11. Vertical plate slider; 12. Connecting plate; 13. Connecting guide rail; 14. Connecting slider; 15. Cylinder; 16. Pressure roller; 17. Support plate; 18. Paper pressure roller; 19. Toothed plate. Detailed Implementation

[0015] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] The present invention will be further described below with reference to the accompanying drawings: A creasing structure for a carton forming machine, such as Figure 1 , Figure 2 and Figure 3 As shown, the device includes a lower paper feed shaft 1, a profile plate 2 above the lower paper feed shaft 1, and four sets of creasing components below the profile plate 2. The creasing components include two creasing wheels 16 and two paper pressing wheels 18. The paper pressing wheels 18 are polyurethane sun wheels. The creasing wheels 16 have a protrusion in the middle for creasing. Pins are installed at the axle of both the creasing wheels 16 and the paper pressing wheels 18. Deep groove ball bearings are installed between the pins and their respective creasing wheels 16 and paper pressing wheels 18. The ends of the pins are fastened with pressure caps. The ends of the four pins are rotatably connected to support plates 17. The top of each support plate 17 is connected to a cylinder 15. The tops of the four cylinders 15 are fixed together by a connecting plate 12.

[0018] The lower paper feed shaft 1 provides conveying power for the paperboard. The creasing roller 16 completes the creasing of the paperboard through the central protrusion. The paper pressing roller 18 made of polyurethane sun wheel provides flexible pressure to constrain the paperboard. The cylinder 15 independently controls the separation of creasing and paper pressing functions. The paper pressing roller 18 in non-crease positions can work independently, effectively avoiding the problem of deviation caused by the lack of constraint on the edge of the paperboard.

[0019] like Figure 1 , Figure 2 and Figure 4As shown, in this embodiment, two sets of translation components are provided on both sides of the top of the connecting plate 12. The translation components include a knife holder vertical plate 9 fixed to the top of the connecting plate 12, a motor mounting plate fixed to the top of the knife holder vertical plate 9, a planetary reducer 3 mounted on the motor mounting plate 5, a spur gear 4 fixed to the outside of the output shaft of the planetary reducer 3, and a toothed plate 19 meshing with the spur gear 4 fixed on the profile plate 2. The rotational motion is converted into linear translational motion through the meshing of the spur gear 4 and the toothed plate 19, thereby realizing the position adjustment of the crease pressing component and adapting to the crease pressing requirements of paperboards of different widths.

[0020] like Figure 1 and Figure 2 As shown, in this embodiment, T-shaped connecting rails 13 are fixed to the lower ends of the front and rear walls of the profile plate 2, and two sets of connecting sliders 14, which are slidably connected to the connecting rails 13, are fixed to the top of the connecting plate 12. T-shaped vertical plate rails 10 are fixed to the middle of the front and rear walls of the profile plate 2, and two sets of vertical plate sliders 11, which are slidably connected to the two vertical plate rails 10, are fixed to the inner walls of the two tool holder vertical plates 9 respectively. A drag chain support tube 8 is fixed to the top of the profile plate 2, and a rectangular frame-shaped drag chain 7 is fixed on the drag chain 7 support plate 17. A through groove is opened in the middle of the drag chain 7, and a drag chain bracket 6 is fixed to the side wall of the motor mounting plate 5. The drag chain bracket 6 is inserted into the through groove and slidably connected to the drag chain 7. The connecting rails 13 and connecting sliders 14 constrain the lower movement trajectory of the connecting plate 12, and the vertical plate rails 10 and vertical plate sliders 11 restrict the middle position of the tool holder vertical plate 9. The straightness of the translational movement is ensured by two-point positioning, eliminating the skew and jamming phenomenon during the translation process.

[0021] The working principle of this utility model is as follows: When the equipment is started, the cardboard is conveyed forward by the lower paper feed shaft 1. According to the cardboard specifications and creasing requirements, the control system controls the cylinders 15 of the four creasing components to operate. For the position that needs creasing, the piston rod of the corresponding cylinder 15 extends, pushing the support plate 17 downward, which drives the corresponding creasing roller 16 and paper pressing roller 18 downward until the protrusion in the middle of the creasing roller 16 contacts the surface of the cardboard, pressing out the crease during the cardboard conveying process; at the same time, the paper pressing roller 18 also contacts the surface of the cardboard, applying stable pressure to the cardboard to prevent deviation.

[0022] For positions where no creasing is required (such as when only two or three creasing lines are needed), the piston rod of the cylinder 15 of the corresponding set of pressure rollers 18 extends, constraining the edge of the cardboard through the pressure of the pressure rollers 18, while the cylinder 15 of the creasing roller 16 remains retracted, and the creasing roller 16 remains raised and does not contact the paper surface. Through the independent control of the cylinders 15, the functions of the creasing roller 16 and the pressure roller 18 are separated, ensuring that the pressure roller 18 in non-crease positions can still perform its limiting function.

[0023] When the creasing position needs to be adjusted to accommodate cardboard of different widths, the output shaft of the planetary reducer 3 drives the spur gear 4 to rotate. Since the spur gear 4 meshes with the toothed plate 19 on the profile plate 2, under the action of gear and rack transmission, the motor mounting plate 5 drives the vertical blade holder 9 to move along the length of the toothed plate 19, and then drives the creasing component to move as a whole through the connecting plate 12. During this process, the connecting slider 14 on the connecting plate 12 slides along the connecting guide rail 13 of the profile plate 2, and the vertical plate slider 11 on the vertical blade holder 9 slides along the vertical plate guide rail 10. The double slide rail guide structure ensures the straightness of the translational movement, avoiding deviation or jamming. When the translational component moves, the drag chain bracket 6 on the side wall of the motor mounting plate 5 slides along the through groove of the drag chain 7.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A creasing structure for a carton forming machine, comprising a lower paper feed shaft (1), a profile plate (2) disposed above the lower paper feed shaft (1), and four sets of creasing components disposed below the profile plate (2); characterized in that: The pressing component includes two pressing wheels (16) and two paper pressing wheels (18). The pressing wheel (16) has a protrusion for pressing the thread in the middle. The pressing wheel (16) and the paper pressing wheel (18) are both equipped with pins at their shafts. The ends of the four pins are rotatably connected to support plates (17). Each support plate (17) is connected to a cylinder (15) at its top. The tops of the four cylinders (15) are fixed together by a connecting plate (12). Two sets of translation components are provided on both sides of the top of the connecting plate (12). The translation components include a knife holder vertical plate (9) fixed to the top of the connecting plate (12). A motor mounting plate is fixed to the top of the knife holder vertical plate (9). A planetary reducer (3) is installed on the motor mounting plate (5). A spur gear (4) is fixed to the outside of the output shaft of the planetary reducer (3). A toothed plate (19) that meshes with the spur gear (4) is fixed on the profile plate (2).

2. The creasing structure of a carton forming machine according to claim 1, characterized in that: The lower ends of the front and rear walls of the profile plate (2) are fixed with T-shaped connecting rails (13), and the top of the connecting plate (12) is fixed with two sets of connecting sliders (14) that are slidably connected to the connecting rails (13).

3. The creasing structure of a carton forming machine according to claim 1, characterized in that: The profile plate (2) has a T-shaped vertical guide rail (10) fixed in the middle of the front and rear walls, and two sets of vertical sliders (11) that are slidably connected to the two vertical guide rails (10) are fixed on the inner walls of the two tool holder vertical plates (9).

4. The creasing structure of a carton forming machine according to claim 1, characterized in that: The top of the profile plate (2) is fixed with a drag chain support tube (8), and a drag chain (7) in the shape of a rectangular frame is fixed on the drag chain (7) support plate (17). A through groove is opened in the middle of the drag chain (7). A drag chain bracket (6) is fixed on the side wall of the motor mounting plate (5). The drag chain bracket (6) is inserted into the through groove and slidably connected with the drag chain (7).

5. The creasing structure of a carton forming machine according to claim 1, characterized in that: Deep groove ball bearings are installed between multiple pins and their respective pressure rollers (16) and paper rollers (18), and the ends of the pins are fastened with pressure caps.

6. The creasing structure of a carton forming machine according to claim 1, characterized in that: The paper pressing wheel (18) is a polyurethane sun wheel.

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