Corrugated board grooving module and grooving machine

Abstract

The invention relates to the technical field of printing and packaging equipment, in particular to a corrugated board slotting module which comprises upper cutterhead assemblies, lower cutterhead assemblies, an upper linkage plate, a lower linkage plate and a synchronous driving mechanism, the upper cutterhead assemblies and the lower cutterhead assemblies are in one-to-one correspondence in number and position, and the upper cutterhead assemblies and the lower cutterhead assemblies are connected in a matched mode; one end of the upper linkage plate and one end of the lower linkage plate are each provided with a linkage plate installation base, and the linkage plate installation bases are fixedly connected with linear sliding blocks. The synchronous driving mechanism comprises a transverse movement driving assembly and a double-lead-screw transmission assembly. The transverse movement driving assembly is in sliding connection with the linear sliding block. The double-lead-screw transmission assembly is installed on the upper linkage plate and connected with the transverse movement driving assembly in a matched mode. The double-lead-screw transmission assembly and the transverse movement driving assembly are matched for transmission, so that the distance between the slotting modules can be adjusted more quickly and accurately, the range is wider, and diversified paperboard specifications can be easily met.

Description

Technical Field

[0001] The invention relates to the technical field of printing and packaging equipment, in particular to a corrugated cardboard slotting module and a slotting machine. Background Art

[0002] Corrugated cardboard is widely used in the packaging industry due to its excellent compressive and cushioning properties. Grooving and creasing are two key processes in the processing of corrugated cardboard. Grooving creates slots of specific dimensions in the cardboard to facilitate subsequent folding and assembly operations. Crimping, on the other hand, creates creases that allow the cardboard to fold accurately into the desired packaging structure. Corrugated cardboard processing typically utilizes a corrugated cardboard printing, slotting, and die-cutting machine.

[0003] The slotting module of a corrugated cardboard printing slotting die-cutting machine is primarily composed of a rotating cutter disc, on which slotting knives are mounted. The rotation of the disc slots the corrugated cardboard as it passes through it. Traditional slotting modules require adjustment of the spacing between adjacent modules to accommodate the slotting positions of different cardboard sizes, as these slots are located at different slot positions. However, conventional slotting machines have several drawbacks when adjusting the spacing between adjacent cutter disc modules:

[0004] On the one hand, the existing technology usually adopts a single screw drive method for adjustment. The single screw drive method is easy to cause the cutter head module to deviate or become unstable during long-distance adjustment, thereby causing the front and rear cutter heads on the cutter head module to be inconsistent with the actual slotting direction during cutting, seriously affecting the slotting effect of the cardboard;

[0005] On the other hand, in traditional equipment, the grooving and creasing processes are often carried out independently and need to be completed on different devices. This not only increases the complexity of the production process, but also leads to low production efficiency. At the same time, since the cardboard needs to be positioned and transferred between the two processes, positioning deviations are prone to occur, affecting product quality. Summary of the Invention

[0006] In order to solve the technical defects raised in the above-mentioned background technology, the purpose of the present invention is to provide a corrugated cardboard slotting module and a slotting machine, which aims to solve the problems of position offset and shaking of the slotting module in the prior art when adjusting the spacing over long distances, and integrate the double screw transmission assembly with the slotting press line to achieve high precision, high efficiency, high adaptability and high stability in corrugated cardboard processing.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A corrugated cardboard slotting module comprises an upper cutter disc assembly, a lower cutter disc assembly arranged opposite to the upper cutter disc assembly, an upper linkage plate for installing the upper cutter disc assembly, a lower linkage plate for installing the lower cutter disc assembly, and a synchronous drive mechanism for driving and adjusting the sliding position of the slotting module, the number and position of the upper cutter disc assembly and the lower cutter disc assembly correspond one to one, and the upper cutter disc assembly is cooperatively connected with the lower cutter disc assembly; one end of the upper linkage plate and the lower linkage plate are respectively provided with a linkage plate mounting seat, and a linear slider is fixedly connected to the linkage plate mounting seat; the synchronous drive mechanism comprises a transverse movement drive assembly and a double-screw transmission assembly, and the transverse movement drive assembly is slidably connected to the linear slider; the double-screw transmission assembly is installed on the upper linkage plate and cooperates with the transverse movement drive assembly, and the upper linkage plate and the lower linkage plate are synchronously adjusted laterally under the driving action of the synchronous drive mechanism.

[0009] Preferably, the double-screw transmission assembly includes a ball bearing seat, a threaded screw and a synchronous sprocket assembly, the ball bearing seat is fixed on the upper linkage plate, and a guide sprocket is provided on the ball bearing seat; the threaded screw passes through the upper linkage plate horizontally and is connected to the ball bearing seat for transmission; the synchronous sprocket assembly and the guide sprocket are synchronously transmitted through a chain.

[0010] Preferably, the synchronous sprocket assembly includes a steering sprocket, a synchronous sprocket and a steering motor, the steering motor is fixed to the other side of the upper linkage plate, and the output end of the steering motor is transmission-connected to the steering sprocket; there are multiple synchronous sprockets, and the multiple synchronous sprockets are rotationally connected to the reversing sprocket and the guide sprocket through chains.

[0011] Preferably, the lateral movement drive assembly includes a bidirectional linear slide rail, a transmission rod and a driving member, the bidirectional linear slide rail extends along the left and right sides of the slotted module, and the upper linkage plate and the lower linkage plate are slidably connected to the linear slide rail through a linkage plate mounting seat and a sliding block; the transmission rod laterally passes through the lower linkage and is transmission-connected to the driving member, the driving member is fixed at the bottom end of the lower linkage plate, and the output end of the driving member is linkage-connected to the transmission rod by setting a coupling.

[0012] Preferably, the upper cutter disc assembly includes an upper cutter disc and a cutting blade. A plurality of mounting holes are distributed circumferentially on one side of the upper cutter disc. A waist-shaped hole is opened on the cutting blade at a position corresponding to the mounting hole. The waist-shaped hole is fixedly connected to the mounting hole by a fastening bolt.

[0013] Preferably, the lower cutter disc assembly includes a lower cutter disc and a paper scraper, and a knife groove is provided on the lower cutter disc at a position corresponding to the cutting blade; the paper scraper is located below the lower cutter disc, and one end of the paper scraper is connected to a paper scraper support rod, and the other end extends to the cutter disc and fits into the surface of the knife groove.

[0014] Preferably, a notch is provided on the cutting blade, and an angle between the notch and the center of the cutting blade is 30-45°.

[0015] A slotting machine includes a slotting module, a frame, a slotting drive device arranged on the frame, and a wire pressing device located on the slotting module. The frame is composed of machine wall panels on both sides and a beam frame connected between the machine wall panels. The beam frame is provided with two upper and lower groups, and one end of the upper and lower groups of beam frames is fixedly connected to a bidirectional linear slide rail.

[0016] Preferably, the slotting drive device includes a slotting motor, a rotating shaft and a transmission gear set, the slotting motor is fixed to one side of the machine wall panel through a bracket; the rotating shaft transversely passes through the upper linkage plate and extends outside the machine wall panel, and one end of the rotating shaft is transmission-connected to the output end of the slotting motor; the transmission gear set includes a first gear and a second gear, the first gear is sleeved on one side of the rotating shaft located on the upper linkage plate, the second gear is sleeved on one side of the upper cutter disc, and the first gear and the second gear are connected through meshing transmission.

[0017] Preferably, the wire pressing device includes a pre-wire pressing mechanism, an upper wire pressing mechanism and a lower wire pressing mechanism, the pre-wire pressing mechanism is arranged on one side of the frame in the cardboard feeding direction; and the pre-wire pressing mechanism is respectively connected to the upper linkage plate and the lower linkage plate with a fork assembly; the number and position of the upper wire pressing mechanism and the lower wire pressing mechanism correspond one to one, and an adjustment assembly is movably connected between the upper wire pressing mechanism and the upper linkage plate, and the adjustment assembly is used to adjust the gap between the upper wire pressing mechanism and the upper linkage plate according to the thickness of the cardboard.

[0018] In summary, the beneficial effects of the present invention are:

[0019] The present invention replaces the traditional single-screw transmission with a synchronous drive mechanism, and utilizes the cooperation of a double-screw transmission assembly and a lateral movement drive assembly to realize synchronous lateral adjustment of the upper linkage plate and the lower linkage plate, effectively solving the problem of offset or shaking of the cutter disc module during long-distance adjustment, further ensuring the stability and reliability of the sliding adjustment of the slotting module, and making the cutting direction of the cutter disc accurately match the actual slotting direction, significantly improving the stability and accuracy of the cardboard slotting effect; in addition, by integrating the wire pressing device into the slotting module, the crease pressing process of the cardboard and the slotting process are carried out simultaneously, eliminating the cardboard positioning and transfer steps between traditional independent processes, simplifying the production process and improving production efficiency, and avoiding positioning deviation, thereby greatly improving production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the slotting machine of the present invention;

[0021] Figure 2It is a structural schematic diagram of the other side of the slotting machine of the present invention;

[0022] Figure 3 It is a front view of the slotting machine of the present invention;

[0023] Figure 4 yes Figure 3 Sectional view of the AA plane;

[0024] Figure 5 yes Figure 3 A magnified view of the structure at a in the middle;

[0025] Figure 6 This is a schematic diagram of the upper structure of the slotting module of the present invention;

[0026] Figure 7 It is a front view of the upper structure of the slotting module of the present invention;

[0027] Figure 8 This is a schematic diagram of the lower structure of the slotting module of the present invention;

[0028] Figure 9 It is a front view of the lower structure of the slotting module of the present invention;

[0029] Figure 10 It is a structural schematic diagram of the slotting cutter head of the present invention;

[0030] Figure 11 is a side view of the upper cutterhead assembly of the present invention;

[0031] Figure 12 It is a side view of the lower cutter disc assembly of the present invention.

[0032] Description of Reference Numerals

[0033] 1. Frame; 11. Machine wall panel; 12. Crossbeam frame; 2. Wire pressing device; 21. Pre-wire pressing mechanism; 22. Upper wire pressing mechanism; 23. Lower wire pressing mechanism; 3. Pulley drive device; 31. Active pulley; 32. Driven pulley; 33. Double-sided toothed synchronous belt; 34. Drive motor; 35. Motor bracket; 4. Fork assembly; 5. Adjustment assembly; 6. Lateral movement drive assembly; 61. Bidirectional linear slide; 62. Transmission rod; 63. Drive element; 64. Coupling; 7. Slotting module; 71. Upper linkage plate; 72. Lower linkage plate; 73. Double-screw transmission assembly; 73 1. Ball bearing seat; 732. Lead screw; 733. Steering sprocket; 734. Synchronous sprocket; 735. Guide sprocket; 736. Chain; 737. Steering motor; 74. Linkage plate mounting seat; 75. Linear slider; 8. Slotting drive device; 81. Slotting motor; 82. Rotating shaft; 83. Transmission gear set; 9. Upper cutter disc assembly; 91. Upper cutter disc; 911. Mounting hole; 92. Cutting blade; 921. Waist-shaped hole; 922. Notch; 10. Lower cutter disc assembly; 101. Lower cutter disc; 1011. Knife groove; 102. Paper scraper; 103. Paper scraper support rod. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention are within the scope of protection of the present invention.

[0035] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0036] Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0037] In the description of the present invention, if words such as "several" are used, they mean one or more; "more" means two or more; "greater than," "less than," and "exceed" are understood to exclude the number itself; and "above," "below," and "within" are understood to include the number itself. The terms "first," "second," and "third" are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or as implicitly specifying the number of the indicated technical features, or as implicitly specifying the order of the indicated technical features.

[0038] The following is combined with Figure 1-12 , an embodiment of a corrugated cardboard slotting module and a slotting machine of the present invention is further described in detail.

[0039] Example 1

[0040] A slotting module 77, such as Figures 6 to 9 As shown, it includes an upper cutter disc 91 component 9, a lower cutter disc 101 component 10 arranged opposite to the upper cutter disc 91 component 9, an upper linkage plate 71 for installing the upper cutter disc 91 component 9, a lower linkage plate 72 for installing the lower cutter disc 101 component 10, and a synchronous drive mechanism for driving and adjusting the sliding position of the slotting module 7. The number and position of the upper cutter disc 91 component 9 and the lower cutter disc 101 component 10 correspond one to one, and the upper cutter disc 91 component 9 is cooperatively connected with the lower cutter disc 101 component 10; one end of the upper linkage plate 71 and the lower linkage plate 72 are respectively provided with a linkage plate mounting seat 74, and a linear slider 75 is fixedly connected to the linkage plate mounting seat 74; the synchronous drive mechanism includes a transverse movement drive assembly 6 and a double screw transmission assembly 73, and the transverse movement drive assembly 6 is slidably connected to the linear slider 75; the double screw transmission assembly 73 is installed on the upper linkage plate 71 and is cooperatively connected to the transverse movement drive assembly 6, and under the driving action of the synchronous drive mechanism, the upper linkage plate 71 and the lower linkage plate 72 are synchronously adjusted laterally.

[0041] Specifically, the dual-screw transmission assembly 73 includes a ball bearing seat 731, a threaded screw 732, and a synchronous sprocket 734 assembly. The ball bearing seat 731 is fixed to the upper linkage plate 71, and a guide sprocket 735 is provided on the ball bearing seat 731. The threaded screw 732 transversely penetrates the upper linkage plate 71 and is in transmission connection with the ball bearing seat 731. The synchronous sprocket 734 assembly and the guide sprocket 735 are synchronously driven by a chain 736. The synchronous sprocket 734 assembly includes a steering sprocket 733, a synchronous sprocket 734, and a steering motor 737. The steering motor 737 is fixed to the other side of the upper linkage plate 71, and the output end of the steering motor 737 is in transmission connection with the steering sprocket 733. There are multiple synchronous sprockets 734, and the multiple synchronous sprockets 734 are rotationally connected to the reversing sprocket and the guide sprocket 735 by a chain 736. A steering motor 737 drives a reversing sprocket, which in turn drives a synchronous chain 736. Multiple sets of synchronous sprockets 734 rotate synchronously within the chain 736, driving a threaded screw 732 that extends transversely through the upper linkage plate 71. The screw 732 translates axially as the ball bearing housing 731 rotates, driving the upper cutterhead assembly 9 left and right, creating dynamic alignment with the lower cutterhead assembly 10. This adjusts the position of the upper cutterhead assembly 9 to accommodate different cardboard sizes. The multi-node synchronization of the chain 736 eliminates the cumulative error associated with single-sided drive, ensuring consistent grooving depth on both sides of the upper cutterhead assembly 9. The precise threaded engagement of the screw assembly allows for fine-tuning of the cutterhead's vertical displacement, linking the pressure of the blade into the cardboard with the clearance adjustment of the upper pressure-line timing belt. This mechanism, through the combination of a rigid drive chain and closed-loop control, ensures precise alignment of the grooving trajectory with the crease position, effectively avoiding cardboard deformation caused by misaligned process steps in traditional step-by-step processing.

[0042] In this embodiment, if Figure 4 、 Figure 8 and Figure 9 As shown, the transverse movement drive assembly 6 includes a bidirectional linear slide 61, a transmission rod 62 and a driving member 63. The bidirectional linear slide 61 extends along the left and right sides of the slotted module, and the upper linkage plate and the lower linkage plate are slidably connected to the linear slide through the linkage plate mounting seat and the slider; the transmission rod 62 transversely passes through the lower linkage and is transmission-connected to the driving member 63. The driving member 63 is fixed to the bottom end of the lower linkage plate, and the output end of the driving member 63 is linkage-connected to the transmission rod 62 by setting a coupling 64.

[0043] Specifically, the driving member 63 can adopt a servo motor, which drives the transmission rod 62 to rotate through the driving member 63, so that the lower linkage plate slides along the bidirectional linear slide rail 61, thereby ensuring that the upper linkage plate and the lower linkage plate move synchronously and remain on the same axis during the horizontal movement adjustment, thereby avoiding the problem of the upper and lower pressing mechanisms offsetting during the pressing process, resulting in the indentation being not centered.

[0044] In this embodiment, if Figures 10 to 12 As shown, the upper cutter disc assembly 9 includes an upper cutter disc 91 and a cutting blade 92. A plurality of mounting holes 911 are distributed circumferentially on one side of the upper cutter disc 91. A waist-shaped hole 921 is provided on the cutting blade 92 at a position corresponding to the mounting hole 911. The waist-shaped hole 921 is fixedly connected to the mounting hole 911 by a fastening bolt; the lower cutter disc assembly 10 includes a lower cutter disc 101 and a paper scraper 102. A knife groove 1011 is provided on the lower cutter disc 101 at a position corresponding to the cutting blade 92; the paper scraper 102 is located below the lower cutter disc 101, and one end of the paper scraper 102 is connected to a paper scraper support rod 103, and the other end extends to the cutter disc and fits the surface of the knife groove 1011.

[0045] Specifically, the slotting cutter discs are equipped with at least two sets for simultaneously cutting the front and rear slots of the cardboard. In the upper cutter disc assembly 9, circumferentially distributed mounting holes 911 are connected to the waist-shaped holes 921 of the cutting blade 92 via fastening bolts. The curved design of the waist-shaped holes 921 allows for fine-tuning of the cutting blade 92 along the radial direction of the cutter disc, flexibly adapting to different slotting depth requirements. As the cutter disc rotates, the cutting blade 92 and the knife groove 1011 of the lower cutter disc assembly 10 form a shearing action, and the cardboard is cut and slotted through the clearance between the upper and lower cutter discs 101. Since the waste generated by the cutting of the lower cutter disc assembly 10 adheres to the cutting surface, the paper scraper 102 is rigidly supported by the paper scraper support rod and tightly fits the lower cutter disc assembly 10 at a preset tilt angle. This allows the sharp edge of the paper scraper 102 to continuously scrape the surface of the lower cutter disc 101 during the cutter's rotation, stripping the waste tangentially and directing it to the waste collection area through its own weight or airflow. This modular alignment design of the upper and lower blade discs 101 ensures cutting stability while also achieving a dynamic balance between blade installation position and waste removal efficiency through the adaptive adjustment of the waist-shaped holes 921 and the paper scraper 102. Compared to traditional fixed blade discs, this structure allows for rapid adjustment of slotting parameters without repeated disassembly, significantly improving the machine's adaptability to varying cardboard specifications. Furthermore, the real-time alignment of the paper scraper 102 and the knife slot 1011 effectively reduces the frequency of downtime for cleaning, ensuring smooth, continuous production. The overall structure improves slotting accuracy while balancing ease of operation and maintenance efficiency.

[0046] In this embodiment, a notch 922 is formed on the cutting blade 92 , and an angle between the notch 922 and the center of the cutting blade 92 is 30-45°.

[0047] Specifically, the notch 922 of the cutting blade 92 is preferably at an angle of 40°, and the depth of the notch 922 is 1 / 3 of the blade radius to disperse the cutting stress and reduce blade wear. By providing the blade with the notch 922, it has the advantages of a deep and wide groove. Because the front and rear parts of the blade are used to slot the cardboard, the length of the slot can be from zero to the entire length of the cutting blade 92. Compared with the traditional cutter disc structure, not only is the slot size range larger, but it also has greater cutting efficiency.

[0048] It is worth mentioning that an axial hole is provided at the center of the upper cutter disc 91 and the lower cutter disc 101, and a slide groove is provided on the side wall of the axial hole. The slide groove is connected to a drive shaft through a key to realize transmission connection.

[0049] Specifically, the design of the axial bore and slideway structure of the upper and lower cutter discs 91 and 101 is key to achieving precise drive and position adjustment of the cutter discs. When the drive shaft passes through the axial bore and engages the slideway via a key, the upper and lower cutter discs rotate stably around their axes, driven by the drive shaft. The combination of the slideway and keyway ensures that the upper and lower cutter discs maintain circumferential positioning under the cutting load, preventing radial offset caused by uneven torque transmission. This eliminates the problem of traditional cutter disc adjustment requiring repeated disassembly and realignment.

[0050] Example 2

[0051] A slotting machine, such as Figures 1 to 5 As shown, it includes a slotting module 7, a frame 1, a slotting drive device 8 arranged on the frame 1, and a wire pressing device 2 located on the slotting module 7. The frame 1 is composed of machine wall panels 11 on both sides and a crossbeam frame 12 connected between the machine wall panels 11. The crossbeam frame 12 is provided with two upper and lower groups, and one end of the upper and lower groups of crossbeam frames 12 is fixedly connected to the bidirectional linear slide rail 61.

[0052] Specifically, a pulley drive device 3 for driving the wire pressing device 2 is provided on the other side of the frame 1 away from the slot drive device 8. The pulley drive device 3 is installed on one side of the frame 1, and the pulley drive device 3 is respectively connected to the slotting module 7 and the wire pressing device 2 to drive the slotting module 7 and the wire pressing device 2 to transmit synchronously. Among them, the pulley drive device 3 includes a driving pulley 31, a driven pulley 32, a double-sided toothed synchronous belt 33 and a driving motor 34. The driving pulley 31 is sleeved on the output end of the driving motor 34; there are multiple driven pulleys 32, and the multiple driven pulleys 32 are respectively sleeved on one end of the wire pressing device 2; the double-sided toothed synchronous belt 33 is covered and connected to the outer surfaces of the driving pulley 31 and the driven pulley 32, and the double-sided toothed synchronous belt 33 is provided with a tooth groove that meshes with the tooth structure of the driven pulley 32; the bottom end of the driving motor 34 is fixed to the machine wall panel 11 by setting a motor bracket 35, and the output end of the driving motor 34 is rotationally connected to the driving pulley 31.

[0053] In this embodiment, a slotting drive device 8 is also connected to the upper linkage plate 71, and the slotting drive device 8 is located above the upper cutting disc assembly, and the slotting drive device 8 includes a slotting motor 81, a rotating shaft 82 and a transmission gear set 83. The rotating shaft 82 passes through the upper linkage plate 71 horizontally and extends to the outside of the machine wall panel 11, and one end of the rotating shaft 82 is transmission-connected to the output end of the slotting motor 81; the transmission gear set 83 includes a first gear and a second gear, the first gear is sleeved on the rotating shaft 82 on one side of the upper linkage plate 7, and the second gear is sleeved on one side of the upper cutter disc 91, and the first gear and the second gear are connected by meshing transmission.

[0054] Specifically, after the slotting motor 81 is activated, its output drives the first gear in the transmission gear set 83 via the rotating shaft 82. This first gear meshes with the second gear mounted on the upper cutter disc 91, thereby driving the upper cutter disc assembly 9 to operate stably at the set speed. During this process, the upper cutter disc 91 and the lower cutter disc 101 form a shearing action through precise clearance fit. The cutting blade 92 continuously slots the passing cardboard as the upper cutter disc 91 rotates. This transmission structure, through the rigid connection of the meshing gears, ensures stable and synchronized power transmission, avoiding the tooth skipping and slipping problems that are common with traditional chain 736 transmissions. The enclosed layout of the gear assembly also reduces external interference, further improving cutting accuracy. The slotting drive 8 also works in conjunction with the dual-screw transmission assembly 73. When adjusting the cutter disc spacing, the transmission gear set 83 adapts to the position of the upper cutter disc 91, maintaining a constant meshed state. This avoids the tedious process of repeated disassembly and manual calibration, enabling rapid switching between different cardboard processing specifications, significantly improving production flexibility and efficiency.

[0055] In this embodiment, the wire pressing device 2 includes a pre-wire pressing mechanism 21, an upper wire pressing mechanism 22 and a lower wire pressing mechanism 23. The pre-wire pressing mechanism 21 is arranged on one side of the frame 1 in the cardboard feeding direction, and the pre-wire pressing mechanism 21 is respectively connected to the upper linkage plate 71 and the lower linkage plate 72 with a fork assembly 4; the number and position of the upper wire pressing mechanism 22 and the lower wire pressing mechanism 23 correspond one to one; an adjustment assembly 5 is movably connected between the upper wire pressing mechanism 22 and the upper linkage plate 71, and the adjustment assembly 5 is used to adjust the gap between the upper wire pressing mechanism 22 and the upper linkage plate 71 according to the thickness of the cardboard; an air lock assembly 6 is movably connected between the lower wire pressing mechanism 23 and the lower linkage plate 72, and the air lock assembly 6 is used to control the sliding stroke of the lower linkage plate 72.

[0056] Specifically, the pre-pressing assembly includes an upper pre-pressing wheel, a lower pre-pressing wheel and a pre-pressing wheel drive shaft. The upper pre-pressing wheel and the lower pre-pressing wheel are both key-connected to the pre-pressing wheel drive shaft, and the gap between the upper pre-pressing wheel and the lower pre-pressing wheel and the upper linkage plate 71 and the lower linkage plate 72 is adjusted by a fork mechanism; the pre-pressing wheel drive shaft is driven by the drive device of the corrugated cardboard printing and slotting machine to rotate synchronously. Before the cardboard enters the upper press mechanism 22 and the lower press mechanism 23 along the conveying direction, the cardboard is first conveyed to the pre-pressing assembly, and then the drive device of the corrugated cardboard printing and slotting machine drives the pre-pressing wheel drive shaft to rotate synchronously, and drives the upper pre-pressing wheel and the lower pre-pressing wheel to rotate in opposite directions through the key connection, forming a pre-pressing on the upper and lower surfaces of the cardboard to ensure that the cardboard enters the press area smoothly; wherein, the fork assembly 4 is connected to the upper and lower linkage plates 72. The fork assembly 4 is a commonly used structure in existing printing machines, so its specific structure and working principle are not described again.

[0057] During the pre-pressing process, the linear pressure generated by the counter-rotating wheels creates a directional pre-crease in the paperboard fibers before they enter the main pressing area. This not only eliminates surface warping but also provides a guide for the subsequent concave and convex structure of the synchronous belt pressing process. By connecting the pre-pressing process with the main pressing process, this structure breaks down the concentrated stress of a traditional single press into two gradual pressure applications. This not only prevents fiber breakage caused by sudden stress, but also guides the main pressing trajectory to the center by the pre-pressing process, significantly improving the straightness and uniformity of the final crease.

[0058] Among them, the upper wire pressing mechanism 22 includes an upper wire pressing wheel group installed on one side of the upper linkage plate 71 and arranged equidistantly along its width direction, and an upper wire pressing synchronous belt wrapped around and connected to the upper wire pressing wheel group, the outer side of the upper wire pressing wheel group is a gear structure; the inner surface of the upper wire pressing synchronous belt is provided with a tooth groove meshing with the gear structure, and the outer surface of the upper wire pressing synchronous belt is provided with a wire pressing groove near the middle position; the upper wire pressing wheel group includes an upper wire pressing rotating wheel, an upper wire pressing front wheel, an upper wire pressing rear wheel and an upper wire pressing driven wheel, The crimping rotating wheel is mounted on the upper linkage plate 71 and is keyed to an upper drive shaft. The upper drive shaft is driven by the drive device of the corrugated cardboard printing and slotting machine to rotate synchronously. There are multiple upper crimping driven wheels, which are arranged side by side below the upper crimping rotating wheel. The upper crimping front wheel and the upper crimping rear wheel are located on both sides of the upper crimping driven wheel, and the upper crimping front wheel, the upper crimping rear wheel, and the upper crimping driven wheel are mounted on the guide plate and driven by the upper crimping synchronous belt. An upper crimping support wheel is located between the upper crimping rotating wheel and the upper crimping driven wheel. The upper crimping support wheel is mounted on the guide plate, and the outer sides of the upper crimping support wheel, the upper crimping rotating wheel, and the upper crimping rear wheel are covered and connected with a transmission belt.

[0059] The lower wire pressing mechanism 23 includes a lower wire pressing wheel group installed on one side of the lower linkage plate 72 and arranged equidistantly along its width direction, and a lower wire pressing synchronous belt wrapped around and connected to the lower wire pressing wheel group; the outer side of the lower wire pressing wheel group is a gear tooth structure; the inner surface of the lower wire pressing synchronous belt is provided with a tooth groove meshing with the gear tooth structure, and the outer surface of the lower wire pressing synchronous belt is provided with a wire pressing protrusion adapted to the wire pressing groove. The lower press wheel assembly includes a lower press rotating wheel, a lower press front wheel, a lower press rear wheel, and a lower press driven wheel. The lower press rotating wheel is keyed to a lower drive shaft, which is driven by the drive device of the corrugated cardboard printing and slotting machine to rotate synchronously. There are multiple lower press driven wheels, which are arranged side by side above the lower press rotating wheel. The lower press front wheel and the lower press rear wheel are respectively located on both sides of the lower press driven wheel. The lower press rotating wheel, the lower press front wheel, the lower press rear wheel, and the lower press driven wheel are driven by a lower press synchronous belt. A tensioning block is provided between the press front wheel and the lower press driven wheel on the adjacent side. One end of the tensioning block is fixedly connected to the lower linkage plate 72, and the top of the tensioning block receives the lower press synchronous belt. The lower pressing mechanism 23 maintains the tension of the lower pressing synchronous belt by tensioning the pull block; the transmission process of the lower pressing wheel group is similar to that of the upper pressing wheel group, and the working principle of the lower pressing wheel is not described in detail.

[0060] It is worth noting that in order to adapt to cardboards of different thicknesses for creasing, the adjustment component 5 adjusts the gap between the upper creasing wheel group and the lower creasing wheel group so that the creasing protrusion and the creasing groove act on a specific position of the cardboard and form a crease. Wherein, the adjustment component 5 includes a guide block with a guide rail on one side, a guide plate connected to the guide block, a nut seat fixed on the guide plate, a transmission screw threaded with the nut seat, and a drive assembly that drives the transmission screw, one side of the guide block is fixedly connected to the upper linkage plate 71, and the other side is slidably connected to the guide plate through the guide rail; the drive assembly includes a mounting seat, a servo motor and a coupling, the mounting seat is fixedly connected to the upper linkage plate 71, and one side of the mounting seat is connected to the coupling; the coupling is respectively linked to the transmission screw and the servo motor.

[0061] The specific adjustment process is as follows: The servo motor outputs power through the coupling, causing the transmission screw nut seat to rotate and move axially, driving the guide plate fixed to it to rise and fall vertically along the guide rail of the guide block. The precise sliding fit between the guide rail and the guide plate on the guide block constrains the degree of freedom of deviation during adjustment, ensuring that the upper press wheel assembly moves smoothly along the preset trajectory, thereby precisely controlling the pressing gap between the upper and lower press belts. When the thickness of the cardboard changes, the servo motor responds to the control command to drive the transmission screw forward and reverse. The mechanical properties of the transmission screw nut pair convert the rotational motion into linear displacement of the guide plate, which simultaneously drives the upper press belt up and down. During this process, the multi-point constraint design of the guide block and guide plate effectively suppresses lateral vibration, ensuring that the concave and convex structures of the upper and lower press belts are always precisely aligned, avoiding uneven indentations caused by misalignment.

[0062] Working principle of the present invention:

[0063] After the corrugated cardboard enters the frame 1 via the conveyor belt, it first passes through the pre-pressing mechanism 21 to complete the initial crease positioning. The pre-pressing roller dynamically adjusts the pressure according to the thickness of the cardboard to ensure the consistency of the crease depth. The cardboard then enters the slotting station. The dual-screw transmission assembly 73 drives the synchronous sprocket 734 through the steering motor 737, driving the threaded screw 732 to precisely adjust the spacing between the upper and lower cutter disc assemblies 10 to adapt to the slotting requirements of different cardboard specifications. The slotting motor 81 drives the upper cutter disc assembly 9 through the transmission gear set 83 to rotate at high speed. The cutting blade 92 and the knife groove 1011 of the lower cutter disc 101 form a shearing action to complete the slotting. At the same time, the paper scraper 102 removes waste in real time to avoid blockage. At the same time, the presser device 2 and the slotting module 7 are synchronized through the pulley drive device 3 to achieve closed-loop control of the slotting depth, presser accuracy, and process synchronization. Ultimately, the cardboard slotting and presser processes are completed simultaneously in a single processing flow, greatly improving production efficiency and product consistency, and solving the core problems of process separation and cumbersome adjustments in traditional technology.

[0064] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A corrugated cardboard slotting module, comprising an upper cutterhead assembly, a lower cutterhead assembly disposed opposite the upper cutterhead assembly, an upper linkage plate for mounting the upper cutterhead assembly, a lower linkage plate for mounting the lower cutterhead assembly, and a synchronous drive mechanism for driving and adjusting the sliding position of the slotting module, characterized in that: The number and position of the upper cutter disc assembly and the lower cutter disc assembly correspond one to one, and the upper cutter disc assembly is cooperatively connected with the lower cutter disc assembly; one end of the upper linkage plate and the lower linkage plate are respectively provided with a linkage plate mounting seat, and a linear slider is fixedly connected to the linkage plate mounting seat; the synchronous drive mechanism includes a transverse movement drive assembly and a double-screw transmission assembly, and the transverse movement drive assembly is slidably connected with the linear slider; the double-screw transmission assembly is installed on the upper linkage plate and cooperatively connected with the transverse movement drive assembly, and under the driving action of the synchronous drive mechanism, the upper linkage plate and the lower linkage plate are synchronously adjusted laterally.

2. The corrugated cardboard slotting module according to claim 1, characterized in that: The double-screw transmission assembly includes a ball bearing seat, a threaded screw and a synchronous sprocket assembly. The ball bearing seat is fixed on the upper linkage plate, and a guide sprocket is provided on the ball bearing seat; the threaded screw passes through the upper linkage plate horizontally and is connected to the ball bearing seat for transmission; the synchronous sprocket assembly and the guide sprocket are synchronously transmitted through a chain.

3. The corrugated cardboard slotting module according to claim 2, characterized in that: The synchronous sprocket assembly includes a steering sprocket, a synchronous sprocket and a steering motor. The steering motor is fixed to the other side of the upper linkage plate, and the output end of the steering motor is transmission-connected to the steering sprocket. There are multiple synchronous sprockets, and the multiple synchronous sprockets are rotationally connected to the reversing sprocket and the guide sprocket through chains.

4. The corrugated cardboard slotting module according to claim 1, characterized in that: The lateral movement drive assembly includes a bidirectional linear slide, a transmission rod and a driving member. The bidirectional linear slide extends along the left and right sides of the slotted module, and the upper linkage plate and the lower linkage plate are slidably connected to the linear slide through a linkage plate mounting seat and a slider; the transmission rod passes through the lower linkage horizontally and is transmission-connected to the driving member. The driving member is fixed at the bottom end of the lower linkage plate, and the output end of the driving member is linkage-connected to the transmission rod by setting a coupling.

5. The corrugated cardboard slotting module according to claim 1, characterized in that: The upper cutter disc assembly includes an upper cutter disc and a cutting blade. A plurality of mounting holes are distributed circumferentially on one side of the upper cutter disc. A waist-shaped hole is opened at a position corresponding to the mounting hole on the cutting blade. The waist-shaped hole is fixedly connected to the mounting hole by a fastening bolt.

6. The corrugated cardboard slotting module according to claim 1, characterized in that: The lower cutter disc assembly includes a lower cutter disc and a paper scraper. A knife groove is provided on the lower cutter disc at a position corresponding to the cutting blade. The paper scraper is located below the lower cutter disc, and one end of the paper scraper is connected to a paper scraper support rod, and the other end extends to the cutter disc and fits into the surface of the knife groove.

7. The corrugated cardboard slotting module according to claim 6, characterized in that: A notch is provided on the cutting blade, and an angle between the notch and the center of the cutting blade is 30-45 degrees.

8. A slotting machine, characterized in that: It comprises the corrugated cardboard slotting module according to any one of claims 1 to 7, and also comprises a frame, a slotting drive device arranged on the frame, and a wire pressing device located on the slotting module, the frame is composed of machine wall panels on both sides and a crossbeam frame connected between the machine wall panels, the crossbeam frame is provided with two upper and lower groups, and one end of the upper and lower groups of the crossbeam frames is fixedly connected to a bidirectional linear slide rail.

9. The slotting machine according to claim 8, characterized in that: The slotting drive device includes a slotting motor, a rotating shaft and a transmission gear set. The slotting motor is fixed to one side of the machine wall panel through a bracket; the rotating shaft transversely passes through the upper linkage plate and extends to the outside of the machine wall panel, and one end of the rotating shaft is transmission-connected to the output end of the slotting motor; the transmission gear set includes a first gear and a second gear, the first gear is sleeved on one side of the rotating shaft located on the upper linkage plate, and the second gear is sleeved on one side of the upper cutter disc, and the first gear and the second gear are connected through meshing transmission.

10. The slotting machine according to claim 8, characterized in that: The wire pressing device includes a pre-pressing mechanism, an upper wire pressing mechanism and a lower wire pressing mechanism. The pre-pressing mechanism is arranged on one side of the frame in the feeding direction of the cardboard; and a fork assembly is connected between the pre-pressing mechanism and the upper linkage plate and the lower linkage plate respectively; the number and position of the upper wire pressing mechanism and the lower wire pressing mechanism correspond one to one, and an adjustment assembly is movably connected between the upper wire pressing mechanism and the upper linkage plate, and the adjustment assembly is used to adjust the gap between the upper wire pressing mechanism and the upper linkage plate according to the thickness of the cardboard.

Images