Intermittent contact rectifying device and conveying equipment for honeycomb paperboard

Abstract

The application discloses an intermittent contact deviation rectifying device for honeycomb paperboard and a conveying device, and relates to the technical field of honeycomb paperboard conveying devices. The application comprises a first conveying roller, a transverse moving mechanism, an elastic balancing mechanism, a pulse executing mechanism, a detection unit and a control unit. The transverse moving mechanism is used to drive the first conveying roller to move along its axial direction. The elastic balancing mechanism is used to offset the gravity of the first conveying roller and the moving components connected with the first conveying roller. The pulse executing mechanism is used to drive the first conveying roller to form a pulse reciprocating motion. When deviation occurs, the control unit controls the transverse moving mechanism to drive the first conveying roller to move along its axial direction, and controls the pulse executing mechanism to drive the first conveying roller to exert an intermittent pulse contact force on the honeycomb paperboard, so that the cumulative damage of the continuous pressure to the cell wall of the honeycomb paperboard is avoided, and the structural integrity of the honeycomb paperboard is maximally protected under the premise of guaranteeing the deviation rectifying effect.

Description

Technical Field

[0001] This invention relates to the field of honeycomb paperboard conveying devices, and more particularly to an intermittent contact correction device and conveying equipment for honeycomb paperboard. Background Technology

[0002] In the production process of honeycomb paperboard, the honeycomb paper core, as the interlayer material, is usually formed by coating, stacking and stretching paper sheets to form a structure with regular hexagonal lattice.

[0003] In continuous production lines, after the honeycomb paper core is stretched and formed, it is first laminated with the lower paper to form a honeycomb paperboard semi-finished product. This semi-finished product then enters a conveyor section consisting of an upper and lower conveyor belt, where it is held between the upper and lower conveyor belts and circulated to the next station for lamination with the upper paper. However, during actual conveying, due to factors such as parallelism errors between the upper and lower conveyor belts, uneven friction on both sides of the conveyor belts, tension fluctuations in the honeycomb paper core itself, and uneven wear of the conveyor belts, the honeycomb paperboard semi-finished product held between the upper and lower conveyor belts is prone to lateral shift. If this shift is not corrected in time, it will lead to misalignment between the honeycomb paperboard and the upper paper in subsequent lamination processes, severely affecting the lamination strength and appearance quality of the honeycomb paperboard. This shift problem is particularly pronounced at the lower conveyor belt, which bears the weight of the honeycomb paperboard and drives its forward movement.

[0004] Existing technologies have various correction devices for the lateral deviation problem of sheet or strip materials, but there is a common contradiction between correction force and material protection: using fixed guide plates can easily cause damage to the cell walls due to continuous friction; using pneumatic push rods or servo motors to drive conveyor rollers to apply continuous lateral thrust can achieve correction, but continuous contact pressure can also cause irreversible damage to the fragile honeycomb paper core structure; and correction devices used for roll material conveying have complex structures and are difficult to directly apply to honeycomb paper cores with porous structures and poor rigidity.

[0005] In addition, existing correction devices mostly act directly on the edge of the honeycomb paperboard, lacking a design that indirectly transmits correction force through a flexible conveyor belt. Furthermore, the drive mechanism has a large load and limited response speed, making it difficult to achieve high-frequency, small-amplitude, and precise adjustments, thus failing to meet the requirements of high-speed production lines for correction response speed and accuracy. Summary of the Invention

[0006] To address the problem that existing technologies cannot effectively avoid damage to the honeycomb paper core structure while ensuring the accuracy of the correction, the main objective of this invention is to provide an intermittent contact correction device and method for honeycomb paperboard. In the process of achieving precise lateral alignment of the honeycomb paperboard semi-finished product, the correction force reduces the risk of damage to the honeycomb paper core cell structure, improves the flexibility and material adaptability of the correction process, thereby improving the conveying quality of the honeycomb paperboard and the composite quality of subsequent products.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides an intermittent contact correction device for honeycomb paperboard, comprising a frame and a first conveyor roller rotatably connected to the frame, and further comprising: A lateral moving mechanism is provided on the first conveying roller and is used to drive the first conveying roller to move along its axial direction; An elastic balancing mechanism is connected between the first conveying roller and the frame to counteract the gravity of the first conveying roller and the moving parts connected thereto; A pulse actuator is connected between the first conveyor roller and the frame to drive the first conveyor roller to form a pulse reciprocating motion in the direction of approaching and moving away from the honeycomb paperboard; The detection unit, mounted on the frame, is used to detect the edge position of the honeycomb paperboard and output an offset signal; The control unit is electrically connected to the detection unit, the lateral movement mechanism, and the pulse actuator, respectively. The control unit receives the offset signal and controls the lateral movement mechanism to move the first conveyor roller along its axial direction according to the offset signal. At the same time, it controls the pulse actuator to drive the first conveyor roller to apply intermittent pulse contact force to the honeycomb paperboard.

[0008] As a preferred embodiment of the aforementioned intermittent contact correction device, the control unit is configured as follows: The offset signal is received, and the lateral moving mechanism is controlled according to the offset signal to move the first conveying roller to a coarse positioning position with a predetermined gap from the edge of the honeycomb paperboard; Before starting pulse correction, control the lateral movement mechanism to drive the first conveying roller to move backward a first preset distance away from the edge of the honeycomb paperboard; The output pulse signal drives the pulse actuator, causing the first conveying roller to begin pulse reciprocating motion; During the extension process of the first conveyor roller reciprocating, when the first conveyor roller comes into contact with the honeycomb paperboard, the lateral movement mechanism is activated simultaneously to control the first conveyor roller to move towards the edge of the honeycomb paperboard. During the retraction process of the first conveying roller in its reciprocating motion, the movement of the lateral moving mechanism is paused.

[0009] The above scheme enables coordinated control of contact and movement during the alignment process. This control strategy first uses coarse positioning to quickly move the first conveyor roller near the honeycomb paperboard, then retracts a preset distance to ensure complete disengagement of the first conveyor roller from the honeycomb paperboard upon pulse activation, avoiding initial impact. During pulse extension, when the first conveyor roller contacts the honeycomb paperboard, the lateral movement mechanism is simultaneously activated to move forward, continuously applying a progressive thrust to the first conveyor roller during the contact period, achieving position adjustment under load. During pulse retraction, axial movement is paused to ensure no additional displacement when the first conveyor roller disengages. This control method effectively pushes the honeycomb paperboard towards the centerline with each pulse contact, while avoiding idle travel interference, improving the utilization efficiency of pulse thrust and the smoothness of the alignment process.

[0010] As a preferred embodiment of the intermittent contact correction device, after the first conveying roller completes one or more reciprocating motion cycles, the forward movement of the lateral moving mechanism in each subsequent reciprocating motion cycle is dynamically adjusted according to the position of the honeycomb paperboard fed back in real time by the detection unit, until the honeycomb paperboard returns to the center line. When the detection unit reports that the honeycomb paperboard has returned to the centerline, it stops outputting the pulse signal and controls the lateral movement mechanism to drive the first conveyor roller to reset to the initial standby position.

[0011] The above scheme enables adaptive pulse correction control based on real-time feedback. This scheme dynamically adjusts the forward movement of the lateral movement mechanism in each pulse cycle based on the continuous monitoring of the honeycomb paperboard's position changes by the detection unit, ensuring that the pulse thrust matches the actual offset. When the honeycomb paperboard deviates significantly from the centerline, the forward movement in each cycle is larger, quickly reducing the deviation; as the honeycomb paperboard approaches the centerline, the forward movement gradually decreases to avoid overshoot. This dynamic adjustment mechanism based on position feedback ensures fast convergence and no overshoot in the correction process. Furthermore, the pulse automatically stops and the system resets when the honeycomb paperboard returns to the centerline, completing fully automatic closed-loop correction control.

[0012] As a preferred embodiment of the intermittent contact correction device, the elastic balancing mechanism includes an elastic component formed by stacking multiple elastic sheets. A roller seat is fixedly disposed in the middle of the elastic component, the first conveying roller is rotatably mounted on the roller seat, and the two sides of the elastic component are hinged to the frame.

[0013] The above scheme achieves gravity cancellation and vertical guidance for the moving parts of the first conveyor roller. The elastic component formed by multiple stacked spring sheets possesses high vertical stiffness and low lateral stiffness. The centrally fixed roller bearing supports the weight of the first conveyor roller and its connecting components, while the structure hinged to the frame on both sides allows the elastic component to bend vertically. When the first conveyor roller is driven by the pulse actuator to perform vertical reciprocating motion, the elastic component generates an elastic restoring force proportional to the displacement. This restoring force balances the gravity of the moving parts, causing the first conveyor roller to be in an approximately suspended state in the vertical direction. Simultaneously, the stacked spring sheet structure constrains the lateral oscillation of the first conveyor roller, ensuring the vertical guidance accuracy of the pulse motion.

[0014] As a preferred embodiment of the intermittent contact correction device, the elastic balancing mechanism further includes a frame, with both sides of the elastic component hinged to the frame via hinge seats, and the frame fixedly installed on the frame. The pulse actuator includes a first cylinder, the cylinder body of which is fixedly mounted on the main body of the first conveying roller, and the piston rod of the first cylinder extends vertically downward and is fixedly connected to the roller seat.

[0015] The above scheme enables modular installation and precise alignment of the elastic balancing mechanism. The frame, serving as an independent mounting base, integrates the elastic components and hinged seats into a single unit, which is then fixed to the frame as a whole, reducing the difficulty of on-site installation and commissioning and minimizing alignment errors. The hinged seats utilize a pin-shaft hinge method, allowing the ends of the elastic components to rotate freely within a certain angle range, preventing additional torque generated when the elastic components bend and deform, and ensuring the perpendicularity of the elastic force direction. The cylinder body of the first cylinder moves with the first conveying roller, while the piston rod is fixed to the stationary roller seat. When the cylinder is filled and vented, the cylinder body moves relative to the piston rod, driving the first conveying roller to perform vertical reciprocating motion. Since the roller seat is connected to the frame through the elastic balancing mechanism, the driving force generated by the first cylinder only needs to overcome inertial and frictional forces, without needing to counteract gravity, as gravity is offset by the elastic balancing mechanism. This layout allows the pulse actuator and the elastic balancing mechanism to be functionally separate yet coordinated; the pulse driving force is entirely used to generate reciprocating motion, improving energy efficiency and response speed.

[0016] As a preferred embodiment of the intermittent contact correction device, the first conveying roller includes a roller body and a roller sleeve, the roller sleeve being slidably fitted onto the outside of the roller body along the axial direction; the lateral movement mechanism includes a second cylinder, the cylinder body of the second cylinder being fixedly disposed inside the roller body, and the piston rod of the second cylinder being connected to the roller sleeve for driving the roller sleeve to slide axially relative to the roller body.

[0017] The above solution enables the built-in integration of the first conveyor roller's axial movement function. The cylinder of the lateral movement mechanism is housed inside the roller body, while the roller sleeve, as a movable component, is fitted onto the outside of the roller body. The cylinder drives the roller sleeve to slide axially, thereby changing the contact position between the first conveyor roller and the honeycomb paperboard. This built-in structure avoids the space occupied by an external drive mechanism, making the overall structure compact. It also reduces the mass of moving parts, which helps improve the response speed of axial movement.

[0018] As a preferred embodiment of the intermittent contact correction device described above, the inner wall of the roller sleeve is provided with a slider, and the outer wall of the roller body is provided with a groove that cooperates with the slider. The slider is embedded in the groove to guide the lateral sliding of the roller sleeve. Wedge-shaped side grooves are provided on both sides of the groove, and ball grooves are provided in the wedge-shaped side grooves. Wedge-shaped protrusions that cooperate with the wedge-shaped side grooves are provided on both sides of the slider. Balls are installed on the wedge-shaped protrusions and are accommodated in the ball grooves, so that the roller sleeve and the roller body form a rolling sliding pair.

[0019] The above scheme achieves low-friction, high-precision guidance between the roller sleeve and the roller body. The cooperation between the slider and the groove constrains the rotational freedom of the roller sleeve, ensuring that it slides only axially without circumferential deflection. The cooperation between the wedge-shaped side groove and the wedge-shaped protrusion provides bidirectional constraint in both the radial and circumferential directions, keeping the roller sleeve and the roller body coaxial. The balls are housed in the ball groove, converting sliding friction into rolling friction, significantly reducing sliding resistance and enabling the roller sleeve to respond sensitively to cylinder drives. This rolling sliding pair structure ensures guiding accuracy while reducing frictional resistance, improving the axial movement response speed and position control accuracy.

[0020] As a preferred embodiment of the intermittent contact correction device, multiple sets of sliders and grooves are evenly spaced along the circumference of the first conveying roller; multiple second cylinders are evenly spaced along the circumference of the first conveying roller, and the piston rods of each second cylinder are connected to the roller sleeve to synchronously drive the roller sleeve to slide.

[0021] The above scheme achieves balanced force distribution and synchronous sliding of the roller sleeve. Multiple sets of sliders and grooves are evenly distributed circumferentially, ensuring the roller sleeve experiences the same constraint force in all directions, preventing jamming or tilting caused by uneven loading. Multiple second cylinders are evenly arranged circumferentially and driven synchronously, ensuring the driving force is evenly applied to multiple stress points on the roller sleeve, preventing skewness during sliding. This multi-guide and multi-drive synchronous design ensures the smoothness and coaxiality of the roller sleeve during large-stroke axial movement, guaranteeing precise control of the contact position between the first conveyor roller and the honeycomb paperboard.

[0022] As a preferred embodiment of the intermittent contact correction device, the detection unit includes two photoelectric sensors. The two photoelectric sensors are respectively mounted on the frame and located in front of the conveying direction of the first conveying roller, corresponding to the left and right edges of the honeycomb paperboard, and are used to output edge trigger signals of the honeycomb paperboard to the control unit.

[0023] In a second aspect, the present invention provides a transport device, comprising: The upper conveyor belt device is used to drive the upper cotton belt to circulate. The lower conveyor belt device is used to drive the lower cotton belt to circulate. A conveying gap is formed between the lower cotton belt and the upper cotton belt to clamp and convey the honeycomb paperboard semi-finished product with the lower paper already pasted on the lower surface. And the aforementioned intermittent contact correction device for honeycomb paperboard, wherein the intermittent contact correction device is disposed on the lower conveyor belt device and is used to drive the honeycomb paperboard to move along its width direction via the lower conveyor belt to correct the deviation.

[0024] The above scheme enables the integrated arrangement of the correction device and the honeycomb paperboard conveying equipment, as well as the indirect transmission of correction force. In this conveying equipment, the upper and lower conveyor belts drive the upper and lower cotton belts in cyclical operation, respectively. The conveyor gap formed between them stably clamps the honeycomb paperboard semi-finished product with the lower paper already attached to its surface, allowing the honeycomb paperboard to move synchronously with the cotton belt. The correction device is located on the lower conveyor belt, with its first conveyor roller contacting the inner or outer surface of the lower cotton belt. When the detection unit detects lateral deviation of the honeycomb paperboard, the control unit drives the lateral movement mechanism and the pulse execution mechanism to work together, causing the first conveyor roller to apply intermittent pulse contact force to the lower cotton belt. The lower cotton belt transmits this pulse force to the clamped honeycomb paperboard semi-finished product, pushing it towards the centerline. This indirect alignment method utilizes the flexible buffering properties of the cotton belt to evenly distribute the pulse thrust to the honeycomb paperboard, avoiding localized stress concentration caused by the alignment force acting directly on the edges of the paperboard. Simultaneously, the lower conveyor belt, as the load-bearing drive unit for transporting the honeycomb paperboard, has a large contact area and stable friction between its cotton belt and the paperboard, effectively converting the pulse thrust into lateral displacement of the paperboard. This achieves low-damage, high-efficiency alignment for the brittle honeycomb paperboard structure. Furthermore, the integrated arrangement of the alignment device and the lower conveyor belt does not alter the original conveyor line structure, facilitating retrofitting in existing production lines and improving the equipment's process adaptability and promotional value.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention achieves efficient and non-destructive correction of honeycomb paperboard through the coordinated configuration of a lateral movement mechanism, an elastic balancing mechanism, a pulse actuator, a detection unit, and a control unit. Because the pulse actuator drives the first conveyor roller in a pulsed reciprocating motion in the direction approaching and away from the honeycomb paperboard, it only briefly contacts the paperboard and applies thrust during the extension phase, and completely disengages during the retraction phase, thus avoiding crushing or plastic deformation of the cell walls caused by continuous pressure. The elastic balancing mechanism counteracts the gravity of the first conveyor roller and its moving parts, allowing the pulse actuator to complete the drive only by overcoming inertial and frictional forces, significantly improving the pulse response frequency and motion stability. The control unit, based on the offset signal fed back by the detection unit, coordinates the control of the lateral movement mechanism and the pulse actuator, ensuring that the paperboard is effectively pushed slightly towards the centerline during each pulse contact, gradually correcting the offset. This invention, through multiple mechanisms of intermittent pulse contact force and gravity counteraction, and synchronous axial movement, maximizes the protection of the structural integrity of the honeycomb paperboard while ensuring the correction effect. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of a transportation device according to an embodiment of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of an intermittent contact correction device according to an embodiment of the present invention; Figure 3 This is a three-dimensional structural diagram of an intermittent contact correction device in operation according to an embodiment of the present invention; Figure 4 This is a schematic cross-sectional view of the first conveying roller according to an embodiment of the present invention; Figure 5 This is according to an embodiment of the present invention. Figure 4 One of the magnified schematic diagrams of the local structure; Figure 6 This is according to an embodiment of the present invention. Figure 4 The second enlarged schematic diagram of the structure.

[0027] Reference numerals: 100, upper conveyor belt device; 101, upper cotton belt; 200, lower conveyor belt device; 201, lower cotton belt; 300, correction device; 10, frame; 21, second cylinder; 31, first cylinder; 40, first conveyor roller; 41, roller body; 42, roller sleeve; 43, slider; 44, chute; 45, wedge protrusion; 46, ball bearing; 47, polyurethane layer; 48, second conveyor roller; 51, frame; 52, elastic component; 53, roller bearing seat; 61, photoelectric sensor. Detailed Implementation

[0028] To better illustrate the objectives, technical solutions, and advantages of the present invention, the specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the invention; like Figure 1 The diagram illustrates a transport device according to an embodiment of the present invention. The transport device includes an upper conveyor belt device 100, a lower conveyor belt device 200, and an intermittent contact correction device for honeycomb paperboard according to an embodiment of the present invention. This intermittent contact correction device for honeycomb paperboard is simply referred to as the correction device 300. The correction device 300 is disposed on the lower conveyor belt device 200.

[0029] The upper conveyor belt device 100 drives the upper cotton belt 101 to circulate, and the lower conveyor belt device 200 drives the lower cotton belt 201 to circulate. A conveying gap is formed between the lower cotton belt 201 and the upper cotton belt 101 to clamp and convey the honeycomb paperboard semi-finished product with the lower paper already attached to its lower surface. The correction device 300 is installed on the lower conveyor belt device 200 to correct the deviation by moving the honeycomb paperboard along its width direction via the lower cotton belt 201.

[0030] like Figures 2 to 6 As shown, the correction device 300 in this embodiment includes a frame 10, a first conveying roller 40, a second conveying roller 48, a lateral movement mechanism, an elastic balancing mechanism, a pulse execution mechanism, a detection unit, and a control unit.

[0031] The frame 10 is assembled from aluminum alloy profiles or steel structural components and serves as the installation base for the entire device, fixed to the side of the lower conveyor belt device 200.

[0032] The first conveyor roller 40 is rotatably connected to the frame 10 and is used to contact the inner or outer surface of the lower cotton belt 201, transmitting a correction force to the honeycomb paperboard through the lower cotton belt 201. The first conveyor roller 40 includes a roller body 41 and a roller sleeve 42, which is axially slidably fitted onto the outside of the roller body 41. The roller body 41 is made of aluminum alloy to reduce weight, and the outer surface of the roller sleeve 42 is covered with a polyurethane layer 47. The polyurethane layer 47 has a Shore hardness of 60A to 80A, which is used to generate slight elastic deformation upon contact to disperse contact stress and avoid excessive local pressure that could damage the honeycomb paperboard cells.

[0033] A lateral movement mechanism is disposed on the first conveying roller 40 and is used to drive the first conveying roller 40 to move along its axial direction. In this embodiment, the lateral movement mechanism includes a plurality of second cylinders 21. The cylinder bodies of the second cylinders 21 are fixedly disposed in the internal cavity of the roller body 41 and are evenly arranged at intervals along the circumference of the first conveying roller 40. The piston rod of the second cylinder 21 is connected to the roller sleeve 42 and is used to drive the roller sleeve 42 to slide axially relative to the roller body 41. By controlling the synchronous extension and retraction of the plurality of second cylinders 21, the precise axial movement of the roller sleeve 42 is achieved. By disposing the cylinders of the lateral movement mechanism inside the roller body 41 and the roller sleeve 42 as a movable component fitted outside the roller body 41, this built-in structure avoids the space occupied by the external drive mechanism, making the overall structure compact, while reducing the mass of the moving parts, which is beneficial to improving the response speed of axial movement.

[0034] To achieve low-friction, high-precision guidance for the sliding of the roller sleeve 42, a slider 43 is provided on the inner wall of the roller sleeve 42, and a groove 44 that mates with the slider 43 is provided on the outer wall of the roller body 41. The slider 43 is embedded in the groove 44 to guide the lateral sliding of the roller sleeve 42. Wedge-shaped side grooves are provided on both sides of the groove 44, and ball bearing grooves 46 are provided within the wedge-shaped side grooves. Wedge-shaped protrusions 45 that mate with the wedge-shaped side grooves are provided on both sides of the slider 43, and ball bearings 46 are mounted on the wedge-shaped protrusions 45. The ball bearings 46 are accommodated within the ball bearing grooves, thus forming a rolling sliding pair between the roller sleeve 42 and the roller body 41. The cooperation between the slider 43 and the groove 44 constrains the rotational freedom of the roller sleeve 42, ensuring that the roller sleeve 42 slides only axially without circumferential deflection. The cooperation between the wedge-shaped side grooves and the wedge-shaped protrusions 45 provides bidirectional constraint in both the radial and circumferential directions, keeping the roller sleeve 42 and the roller body 41 coaxial. The ball 46 transforms sliding friction into rolling friction, significantly reducing sliding resistance and enabling the roller sleeve 42 to respond sensitively to the cylinder drive, thus ensuring guiding accuracy and improving the response speed and position control accuracy of axial movement.

[0035] Multiple sets of sliders 43 and grooves 44 are evenly spaced along the circumference of the first conveying roller 40, preferably four sets in this embodiment. The multiple sets of sliders 43 and grooves 44 are evenly distributed along the circumference, so that the roller sleeve 42 is subjected to the same constraint force in all directions, avoiding jamming or tilting caused by uneven loading.

[0036] Multiple second cylinders 21 are evenly spaced along the circumference of the first conveying roller 40. The piston rods of each second cylinder 21 are connected to the roller sleeve 42 to synchronously drive the roller sleeve 42 to slide. The multiple second cylinders 21 are evenly arranged and driven synchronously along the circumference, so that the driving force is evenly applied to multiple force points of the roller sleeve 42, preventing the roller sleeve 42 from deflecting during sliding, ensuring the stability and coaxiality of the roller sleeve 42 during large-stroke axial movement, and ensuring precise control of the contact position between the first conveying roller 40 and the honeycomb paperboard.

[0037] An elastic balancing mechanism is connected between the first conveying roller 40 and the frame 10 to counteract the weight of the first conveying roller 40 and its connected moving parts. In this embodiment, the elastic balancing mechanism includes a frame 51 and an elastic component 52 formed by stacking multiple spring sheets. The frame 51 is fixedly mounted on the frame 10. A roller bearing seat 53 is fixedly disposed in the middle of the elastic component 52, and the roller body 41 of the first conveying roller 40 is rotatably mounted on the roller bearing seat 53. The two sides of the elastic component 52 are hinged to the frame 51 through hinge seats, allowing the elastic component 52 to undergo bending deformation in the vertical direction. The elastic component 52 formed by stacking multiple spring sheets has high vertical stiffness and low lateral stiffness. The roller bearing seat 53 fixed in the middle bears the weight of the first conveying roller 40 and its connecting parts, and the structure of being hinged to the frame 10 on both sides allows the elastic component 52 to undergo bending deformation in the vertical direction. When the first conveying roller 40 is driven by the pulse actuator to perform vertical reciprocating motion, the elastic component 52 generates an elastic restoring force proportional to the displacement. This restoring force balances the gravity of the moving part, causing the first conveying roller 40 to be in an approximately suspended state in the vertical direction. At the same time, the spring sheet stacked structure constrains the lateral oscillation of the first conveying roller 40, ensuring the vertical guiding accuracy of the pulse motion.

[0038] A pulse actuator is connected between the first conveyor roller 40 and the frame 10 to drive the first conveyor roller 40 to form a pulse reciprocating motion in the direction of approaching and moving away from the honeycomb cardboard. In this embodiment, the pulse actuator includes a first cylinder 31, the cylinder body of which is fixedly mounted on the roller body 41 of the first conveyor roller 40. The piston rod of the first cylinder 31 extends vertically downward and is fixedly connected to the roller shaft seat 53 of the elastic balancing mechanism. When the first cylinder 31 is filled and vented, the cylinder body moves relative to the fixed piston rod, driving the first conveyor roller 40 to perform a vertical reciprocating motion. Since the elastic balancing mechanism has offset the gravity, the first cylinder 31 only needs to overcome the inertial force and friction to drive the first conveyor roller 40 to move, realizing a high-frequency, small-amplitude pulse reciprocating motion. The frame 51 serves as an independent mounting base, integrating the elastic component 52 and the hinge seat into one unit, and then fixing the whole unit to the frame 10, reducing the difficulty of on-site installation and debugging and the centering error. The hinged seat adopts a pin hinge method, allowing the end of the elastic component 52 to rotate freely within a certain angle range, avoiding additional torque when the elastic component 52 bends and deforms, and ensuring the perpendicularity of the elastic force direction. The cylinder body of the first cylinder 31 moves with the first conveying roller 40, and the piston rod is fixed on the stationary roller seat 53. This layout allows the pulse actuator and the elastic balancing mechanism to be functionally separated yet coordinated. The pulse driving force is used entirely to generate reciprocating motion, improving energy efficiency and response speed.

[0039] The second conveyor roller 48 is rotatably mounted on the frame 10, located directly below the first conveyor roller 40, and arranged parallel to the first conveyor roller 40. The second conveyor roller 48 includes an aluminum alloy roller body and a polyurethane layer 47 covering the surface. Its diameter is similar to that of the first conveyor roller 40, and it can rotate freely. The gap between the first conveyor roller 40 and the second conveyor roller 48 is set to be slightly smaller than the total thickness of the lower cotton strip 201 and the honeycomb paperboard, to ensure that the lower cotton strip 201 is slightly pressed between the two when the pulse is extended, thereby obtaining stable support. When the pulse actuator drives the first conveyor roller 40 to reciprocate, the second conveyor roller 48 provides stable support from below, forming a clamping and guiding action on the lower cotton strip 201 with the first conveyor roller 40. This effectively suppresses the elastic deformation and vibration that may occur in the lower cotton strip 201 when subjected to pulse thrust, making the pulse thrust more concentrated and smoothly transmitted to the honeycomb paperboard, further improving the stability and reliability of the correction process.

[0040] The detection unit is mounted on the frame 10 and is used to detect the edge position of the honeycomb paperboard and output an offset signal. In this embodiment, the detection unit includes two photoelectric sensors 61, which are respectively mounted on the frame 10 and located in front of the first conveying roller 40 in the conveying direction, corresponding to the left and right edges of the honeycomb paperboard. The photoelectric sensors 61 are diffuse reflection type, and the detection distance is adjustable. When the edge of the honeycomb paperboard enters the detection range, a trigger signal is output to the control unit. Since the sensors are installed in front of the first conveying roller 40, when the edge of the honeycomb paperboard deviates from the centerline, it is detected by the sensors first. The control unit obtains the lead time, thus having enough time to perform coarse positioning and pulse correction actions, achieving advance control.

[0041] The control unit is electrically connected to the detection unit, the second cylinder 21 of the lateral movement mechanism, and the first cylinder 31 of the pulse execution mechanism. The control unit receives the offset signal output by the detection unit and controls the lateral movement mechanism to move the first conveyor roller 40 axially according to the offset signal. Simultaneously, it controls the pulse execution mechanism to drive the first conveyor roller 40 to apply intermittent pulse contact force to the lower cotton belt 201, transmitting the pulse thrust to the honeycomb paperboard through the lower cotton belt 201. In this embodiment, the control unit employs a programmable logic controller (PLC) with a built-in state machine module and pulse width modulation generator to achieve automated timing control and pulse signal generation during the correction process.

[0042] The control unit is specifically configured as follows: receiving an offset signal and controlling the lateral movement mechanism to move the first conveyor roller 40 to a coarse positioning position with a predetermined gap from the edge of the honeycomb paperboard according to the offset signal; before starting pulse correction, controlling the lateral movement mechanism to drive the first conveyor roller 40 to retract a first preset distance away from the edge of the honeycomb paperboard; outputting a pulse signal to drive the pulse actuator to make the first conveyor roller 40 start to perform pulse reciprocating motion in the direction of approaching and moving away from the honeycomb paperboard; during the extension process of the first conveyor roller 40 in reciprocating motion, when the first conveyor roller 40 comes into contact with the honeycomb paperboard, the lateral movement mechanism is simultaneously started to control the first conveyor roller 40 to move forward in the direction of approaching the edge of the honeycomb paperboard; during the retraction process of the first conveyor roller 40 in reciprocating motion, the movement of the lateral movement mechanism is paused.

[0043] This control strategy first uses coarse positioning to quickly move the first conveyor roller 40 near the honeycomb paperboard, then retracts it a first preset distance to ensure that the first conveyor roller 40 is completely disengaged from the honeycomb paperboard when the pulse starts, avoiding initial impact. During pulse extension, when the first conveyor roller 40 contacts the honeycomb paperboard, the lateral movement mechanism is simultaneously activated to move forward, allowing the first conveyor roller 40 to continuously apply a progressive thrust during the contact period, achieving position adjustment under load. During pulse retraction, axial movement is paused to ensure that there is no additional displacement when the first conveyor roller 40 disengages. This control method effectively pushes the honeycomb paperboard towards the centerline with each pulse contact, while avoiding idle travel interference, improving the utilization efficiency of pulse thrust and the smoothness of the correction process.

[0044] After the first conveyor roller 40 completes one or more reciprocating cycles, the control unit dynamically adjusts the forward movement of the lateral movement mechanism in each subsequent reciprocating cycle based on the real-time feedback of the honeycomb paperboard position from the detection unit. When the honeycomb paperboard deviates significantly from the centerline, the forward movement in each cycle is larger, quickly reducing the deviation; when the honeycomb paperboard approaches the centerline, the forward movement gradually decreases to avoid overshoot. This dynamic adjustment mechanism based on position feedback enables the correction process to converge quickly without overshoot. When the detection unit reports that the honeycomb paperboard has returned to the centerline, the control unit stops outputting pulse signals and controls the lateral movement mechanism to reset the roller sleeve 42 of the first conveyor roller 40 to its initial standby position.

[0045] The working process of the correction device 300 in this embodiment will be described in detail below with reference to the accompanying drawings.

[0046] In standby mode, the second cylinder 21 of the lateral movement mechanism is in the retracted position, the roller sleeve 42 of the first conveying roller 40 is in the initial standby position, away from the edge of the honeycomb paperboard; the pulse actuator stops working; and the elastic balancing mechanism maintains the state of gravity counteraction.

[0047] When the honeycomb paperboard shifts laterally during transport, such as to the left, the left-side photoelectric sensor 61 first detects that the edge of the honeycomb paperboard has entered the detection area and outputs a trigger signal to the control unit. The control unit calculates the offset amount and offset direction based on the duration of the trigger signal.

[0048] The control unit first controls the extension of the second cylinder 21 of the lateral movement mechanism based on the offset signal, driving the roller sleeve 42 of the first conveyor roller 40 to move to a coarse positioning position with a predetermined gap from the edge of the honeycomb paperboard, such as 1.5 mm. After coarse positioning is completed, before starting pulse correction, the control unit controls the lateral movement mechanism to move the roller sleeve 42 of the first conveyor roller 40 backward a first preset distance away from the edge of the honeycomb paperboard, such as backward 2 mm, to ensure that the first conveyor roller 40 is completely disengaged from the honeycomb paperboard when the pulse is started.

[0049] Subsequently, the control unit outputs a pulse width modulation signal to drive the first cylinder 31 of the pulse actuator, causing the first conveyor roller 40 to begin pulse reciprocating motion, for example, at a frequency of Hertz and an amplitude of 3 mm. During the extension process of the first conveyor roller 40's reciprocating motion, when the first conveyor roller 40 comes into contact with the honeycomb paperboard, the control unit simultaneously activates the lateral movement mechanism, controlling the roller sleeve 42 of the first conveyor roller 40 to move towards the edge of the honeycomb paperboard; during the retraction process of the first conveyor roller 40's reciprocating motion, the control unit pauses the movement of the lateral movement mechanism. This control method ensures that the first conveyor roller 40 continuously applies a progressive pulse thrust during the period of contact with the honeycomb paperboard, without any additional displacement after disengagement.

[0050] During the pulse correction process, when the first conveyor roller 40 extends downward under the drive of the pulse actuator, it presses down on the lower cotton strip 201. At this time, the second conveyor roller 48 provides stable support from below, clamping the lower cotton strip 201 between the first conveyor roller 40 and the second conveyor roller 48. This effectively transmits the pulse thrust to the clamped honeycomb cardboard, while avoiding thrust loss and vibration caused by the elastic deformation of the lower cotton strip 201. When the first conveyor roller 40 retracts, the lower cotton strip 201 returns to its free state, and the second conveyor roller 48 rotates accordingly without generating additional resistance.

[0051] After the first conveyor roller 40 completes one or more reciprocating motion cycles, the control unit dynamically adjusts the forward movement of the lateral movement mechanism in each subsequent reciprocating motion cycle based on the real-time feedback of the honeycomb paperboard position from the detection unit. When the honeycomb paperboard deviates significantly from the centerline, the forward movement in each cycle is larger to quickly reduce the deviation; when the honeycomb paperboard approaches the centerline, the forward movement gradually decreases to avoid overshoot.

[0052] When the detection unit reports that the honeycomb paperboard has returned to the centerline, the control unit stops outputting pulse signals and controls the lateral movement mechanism to drive the roller sleeve 42 of the first conveying roller 40 to reset to the initial standby position, completing one complete correction cycle.

[0053] At the transport equipment level, the correction device 300 is installed on the lower conveyor belt device 200, with its first conveyor roller 40 contacting the inner surface of the lower cotton belt 201. When the correction device 300 is working, the first conveyor roller 40 applies intermittent pulse contact force to the lower cotton belt 201, which transmits this pulse force to the honeycomb paperboard semi-finished product sandwiched between the upper cotton belt 101 and the lower cotton belt 201, pushing the honeycomb paperboard towards the centerline. This indirect correction method utilizes the flexible buffering characteristics of the cotton belt to evenly distribute the pulse thrust to the honeycomb paperboard, avoiding local stress concentration caused by the correction force acting directly on the edge of the honeycomb paperboard. At the same time, the lower conveyor belt device 200, as the load-bearing drive unit for transporting the honeycomb paperboard, has a large contact area and stable friction between its cotton belt and the honeycomb paperboard, which can effectively convert the pulse thrust into the lateral displacement of the honeycomb paperboard, achieving low-damage and high-efficiency correction of the brittle honeycomb paperboard structure.

[0054] In this application, "multiple" refers to two or more. The terms "first," "second," "third," "fourth," etc. (if present) in this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0055] In this application, unless otherwise expressly defined, the terms "installation," "connection," and "linking" 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 between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0056] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0057] Unless otherwise specified, all steps in this application may be performed sequentially or randomly. For example, if the method includes steps A and B, it means that the method may include steps A and B performed sequentially, or it may include steps B and A performed sequentially. For example, if the method may also include step C, it means that step C may be added to the method in any order. For example, the method may include steps A, B, and C, or it may include steps A, C, and B, or it may include steps C, A, and B, etc.

[0058] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An intermittent contact correction device for honeycomb paperboard, comprising a frame (10) and a first conveyor roller (40), the first conveyor roller (40) being rotatably connected to the frame (10), characterized in that, Also includes: A lateral moving mechanism is provided on the first conveying roller (40) for driving the first conveying roller (40) to move along its axial direction; An elastic balancing mechanism is connected between the first conveying roller (40) and the frame (10) to counteract the gravity of the first conveying roller (40) and the moving parts connected thereto; A pulse actuator is connected between the first conveyor roller (40) and the frame (10) for driving the first conveyor roller (40) to form a pulse reciprocating motion in the direction of approaching and moving away from the honeycomb paperboard; The detection unit, mounted on the frame (10), is used to detect the edge position of the honeycomb paperboard and output an offset signal; The control unit is electrically connected to the detection unit, the lateral movement mechanism and the pulse actuator respectively. The control unit receives the offset signal and controls the lateral movement mechanism to drive the first conveying roller (40) to move along its axial direction according to the offset signal. At the same time, the control unit controls the pulse actuator to drive the first conveying roller (40) to apply intermittent pulse contact force to the honeycomb paperboard.

2. The intermittent contact correction device for honeycomb paperboard according to claim 1, characterized in that, The control unit is configured as follows: The offset signal is received, and the transverse moving mechanism is controlled according to the offset signal to move the first conveying roller (40) to a coarse positioning position with a predetermined gap from the edge of the honeycomb paperboard; Before starting the pulse correction, the lateral movement mechanism is controlled to drive the first conveying roller (40) to move backward a first preset distance away from the edge of the honeycomb paperboard; The output pulse signal drives the pulse actuator, causing the first conveying roller (40) to start pulse reciprocating motion; During the reciprocating extension of the first conveyor roller (40), when the first conveyor roller (40) comes into contact with the honeycomb paperboard, the lateral movement mechanism is activated simultaneously to control the first conveyor roller (40) to move towards the edge of the honeycomb paperboard. During the retraction of the first conveying roller (40) in reciprocating motion, the movement of the lateral moving mechanism is paused.

3. The intermittent contact correction device for honeycomb paperboard according to claim 2, characterized in that, After the first conveying roller (40) completes one or more reciprocating motion cycles, the forward movement of the lateral moving mechanism in each subsequent reciprocating motion cycle is dynamically adjusted according to the position of the honeycomb paperboard fed back by the detection unit in real time, until the honeycomb paperboard returns to the center line; When the detection unit reports that the honeycomb paperboard has returned to the center line, it stops outputting the pulse signal and controls the lateral movement mechanism to drive the first conveying roller (40) to reset to the initial standby position.

4. The intermittent contact correction device for honeycomb paperboard according to claim 1, characterized in that, The elastic balancing mechanism includes an elastic component (52) formed by stacking multiple elastic pieces. A roller seat (53) is fixedly provided in the middle of the elastic component (52). The first conveying roller (40) is rotatably mounted on the roller seat (53). The two sides of the elastic component (52) are hinged to the frame (10).

5. The intermittent contact correction device for honeycomb paperboard according to claim 4, characterized in that, The elastic balancing mechanism also includes a frame (51), and the two sides of the elastic component (52) are hinged to the frame (51) through hinge seats. The frame (51) is fixedly installed on the frame (10). The pulse actuator includes a first cylinder (31), the cylinder body of the first cylinder (31) is fixedly installed on the roller body (41) of the first conveying roller (40), the piston rod of the first cylinder (31) extends vertically downward and is fixedly connected to the roller seat (53).

6. The intermittent contact correction device for honeycomb paperboard according to claim 1, characterized in that, The first conveying roller (40) includes a roller body (41) and a roller sleeve (42). The roller sleeve (42) can be slidably fitted onto the outside of the roller body (41) along the axial direction. The lateral movement mechanism includes a second cylinder (21). The cylinder body of the second cylinder (21) is fixedly disposed inside the roller body (41). The piston rod of the second cylinder (21) is connected to the roller sleeve (42) and is used to drive the roller sleeve (42) to slide axially relative to the roller body (41).

7. The intermittent contact correction device for honeycomb paperboard according to claim 6, characterized in that, The inner wall of the roller sleeve (42) is provided with a slider (43), and the outer wall of the roller body (41) is provided with a groove (44) that cooperates with the slider (43). The slider (43) is embedded in the groove (44) to guide the lateral sliding of the roller sleeve (42). The two sides of the groove (44) are provided with wedge-shaped side grooves, and the wedge-shaped side grooves are provided with ball (46) grooves. The two sides of the slider (43) are provided with wedge-shaped protrusions (45) that cooperate with the wedge-shaped side grooves. Balls (46) are installed on the wedge-shaped protrusions (45), and the balls (46) are accommodated in the ball (46) grooves, so that the roller sleeve (42) and the roller body (41) form a rolling sliding pair.

8. An intermittent contact correction device for honeycomb paperboard according to claim 6, characterized in that, Multiple sets of sliders (43) and grooves (44) are evenly spaced along the circumference of the first conveying roller (40); multiple second cylinders (21) are evenly spaced along the circumference of the first conveying roller (40), and the piston rods of each second cylinder (21) are connected to the roller sleeve (42) to synchronously drive the roller sleeve (42) to slide.

9. The intermittent contact correction device for honeycomb paperboard according to claim 1, characterized in that, The detection unit includes two photoelectric sensors (61), which are respectively mounted on the frame (10) and located in front of the first conveying roller (40) in the conveying direction. They are respectively set to the left and right edges of the honeycomb paperboard and are used to output the edge trigger signal of the honeycomb paperboard to the control unit.

10. A transportation device, characterized in that, include: The upper conveyor belt device (100) is used to drive the upper cotton belt (101) to circulate. The lower conveyor belt device (200) is used to drive the lower cotton belt (201) to circulate. A conveying gap is formed between the lower cotton belt (201) and the upper cotton belt (101) to clamp and convey the honeycomb paperboard semi-finished product with the lower paper pasted on the lower surface. And an intermittent contact correction device for honeycomb paperboard as described in any one of claims 2 to 9, the intermittent contact correction device (300) being disposed on the lower conveyor belt device (200) for moving the honeycomb paperboard along its width direction via the lower cotton belt (201) to correct the offset.

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