A raw paper bracket for corrugated paperboard production

Abstract

The application provides a raw paper bracket for corrugated board production, which comprises a base, a raw paper supporting mechanism, a hexagonal shaft, a lifting mechanism, a rotary driving mechanism, a translation mechanism, a first buffering mechanism, a second buffering mechanism and a guide deviation correction mechanism, the raw paper supporting mechanism comprises an arc-shaped arm, an elastic chuck assembly, a weighing assembly and a roll exit auxiliary assembly are installed on the arc-shaped arm, the elastic chuck assembly is arranged to avoid damaging the roll core of the paper roll, the roll exit auxiliary assembly cooperates with the elastic chuck assembly and the translation mechanism to ensure that the roll can smoothly and reliably exit the chuck and better protect the roll core of the paper roll, the weighing assembly is arranged to detect the weight of the raw paper roll in real time and facilitate reminding the staff to accurately and timely replace the raw paper roll, and the guide deviation correction mechanism is arranged to guide and correct the deviation of the raw paper when the raw paper is output, thereby solving the problem that the raw paper supporting mechanism may deviate when outputting the raw paper.

Description

Technical Field

[0001] This invention belongs to the field of corrugated paper production equipment, and specifically relates to a base paper support for corrugated cardboard production. Background Technology

[0002] Corrugated cardboard, also known as corrugated paperboard, is a multi-layered laminate. It consists of at least one layer of corrugated core paper (commonly called "corrugated sheet," "corrugated paper," "corrugated core," or "corrugated base paper") and one layer of cardboard (also called "boxboard" or "boxboard"). It possesses high mechanical strength and can withstand impacts and drops during handling. The actual performance of corrugated cardboard depends on three factors: the characteristics of the core paper and the cardboard, and the structure of the carton itself. In the production process of corrugated cardboard, base paper supports are used to hold the base paper, which rotates around an axis for continuous production.

[0003] Traditional corrugated cardboard support frames consist of movable arms on a frame, with clamps at the top of the arms. The clamps insert into the paper roll shaft holes and are fixed in place. When the movable arms are raised, they lift the paper roll. The distance between the two movable arms is not adjustable. Patent application number 201520437217.9 provides a width-adjustable corrugated cardboard support frame with adjustable distance between its two movable arms to meet the production needs of paper rolls of different widths. However, both arms can only be adjusted simultaneously, not individually. Patent application number 202010297786.3 provides an adjustable corrugated cardboard support frame for production, capable of adjusting both the width and height of the support frame, but only one frame can be adjusted, lacking flexibility. None of the above-mentioned existing technologies can automatically clamp paper rolls on the ground, requiring additional hoisting equipment, which presents difficulties in loading the paper rolls. Summary of the Invention

[0004] The purpose of this invention is to provide a paper support for corrugated cardboard production, which can clamp and lift paper rolls of different widths for corrugated cardboard production, and can also adjust the lifting height of the paper rolls.

[0005] To achieve the above objectives, the present invention adopts the following technical solution.

[0006] The present invention provides a paper support frame for corrugated cardboard production, including a base and a paper support device installed on the base, wherein the paper support device includes a paper support mechanism for supporting the paper for corrugated cardboard production.

[0007] Two symmetrically arranged paper support mechanisms are slidably mounted on a hexagonal shaft. The two ends of the hexagonal shaft are respectively rotatably mounted on two symmetrically arranged lifting mechanisms. The lifting mechanism for driving the hexagonal shaft to move up and down is mounted on the base. The lifting mechanism is equipped with a rotary drive mechanism for driving the hexagonal shaft to rotate. A translation mechanism for driving the paper support mechanism to move horizontally is also installed on the hexagonal shaft between the lifting mechanisms.

[0008] Below the translation mechanism are a first buffer mechanism and a second buffer mechanism. The first buffer mechanism is used to buffer the original paper holding mechanism when it rotates upward to the highest position, and the second buffer mechanism is used to buffer the original paper holding mechanism when it rotates downward to the lowest position.

[0009] The lifting mechanism is also equipped with a guiding and correction mechanism for the output of the raw paper.

[0010] Furthermore, the paper support mechanism includes an arc-shaped arm, the lower part of which is slidably mounted on a hexagonal shaft, and the upper part of which is rotatably mounted with an elastic clamp assembly.

[0011] Preferably, the elastic chuck assembly includes a housing, a chuck, a limiting plate, and a spring. A circular hole is opened in the center of one side of the housing. The tail end of the chuck extends into the housing through the circular hole and connects with the limiting plate. The limiting plate is slidably disposed in the housing. One end of the spring located in the housing contacts the limiting plate, and the other end contacts the bottom surface of the housing. The bottom surface of the housing is rotatably connected to the upper part of the arc-shaped arm through a connecting shaft.

[0012] Preferably, the limiting disk is provided with a plurality of third guide blocks evenly arranged around its circumference, and the housing is provided with a third guide groove that slides and matches the third guide blocks.

[0013] Furthermore, a weighing assembly is provided on the outer side of the upper part of the arc-shaped arm. The weighing assembly includes an outer spherical bearing seat, a pressure sensor, and a support plate. The support plate is fixedly installed on the outer side of the upper part of the arc-shaped arm, the outer spherical bearing seat is installed on the outer end of the connecting shaft, and the pressure sensor is installed between the outer spherical bearing seat and the support plate.

[0014] Furthermore, the upper part of the arc-shaped arm is also provided with a drum unwinding auxiliary assembly, which includes an unwinding ring disc and an unwinding cylinder. The unwinding ring disc and the unwinding cylinder are located on both sides of the arc-shaped arm. The unwinding cylinder is fixed to the upper part of the outer side of the arc-shaped arm. Two guide holes are opened on the upper part of the arc-shaped arm. The piston rod of the unwinding cylinder passes through one of the guide holes and is connected to the unwinding ring disc located on the inner side of the arc-shaped arm. The inner hole of the unwinding ring disc is larger than the outer diameter of the housing. The unwinding ring disc is located outside the elastic chuck assembly. The unwinding ring disc is connected to a guide rod, which slides into the other guide hole.

[0015] Furthermore, the lifting mechanism includes a mounting box fixed to the base, a lifting box body slidably connected to the inner side of the mounting box, a first rack vertically arranged on the outer wall of the lifting box, a first motor arranged inside the mounting box, the first motor being fixed inside the mounting box by a first L-shaped bracket, and a drive gear meshing with the first rack being arranged on the output shaft of the first motor.

[0016] Preferably, the outer wall of the lifting box is provided with a dovetail groove-shaped first guide block, and the inner wall of the mounting box is provided with a first guide groove that slides and matches the first guide block.

[0017] Furthermore, the rotary drive mechanism includes a second rack and a rotary cylinder. The rotary cylinder is vertically mounted on the top of the lifting box. The piston rod of the rotary cylinder is connected to the upper end of the second rack. The second rack meshes with an internal hexagonal gear located at the end of the hexagonal shaft. Both the second rack and the internal hexagonal gear are located inside the lifting box.

[0018] Preferably, a dovetail groove-shaped second guide block is provided on the side of the second rack, and a second guide groove that slides and matches the second guide block is provided on the inner wall of the lifting box.

[0019] Furthermore, a limiting ring is fitted onto the hexagonal shaft, and the limiting ring is located inside the lifting box.

[0020] Furthermore, the translation mechanism includes a translation cylinder, which is mounted on the limiting ring via a second L-shaped bracket, and the piston rod of the translation cylinder is connected to a connecting block provided at the lower part of the arc-shaped arm on the opposite side.

[0021] Furthermore, a laser rangefinder is also provided on the second L-shaped bracket. The laser rangefinder is located below the hexagonal axis and detects the distance between the lower part of the arc arm and the limiting ring on the same side.

[0022] Furthermore, the first buffer mechanism includes a vertically arranged first hydraulic buffer, which is mounted on the side wall of the lifting box via a first mounting plate.

[0023] Furthermore, the second buffer mechanism includes a horizontally arranged second hydraulic buffer, which is mounted on the side wall of the lifting box via a second mounting plate.

[0024] Furthermore, the guiding and correcting mechanism includes a guiding side plate, a first guiding roller, a second guiding roller, a lead screw, a second motor, a nut block, and a line laser profile sensor. Two symmetrically arranged guiding side plates are respectively set on the top of the lifting box. The first guiding roller, the second guiding roller, and the lead screw are all rotatably installed between the guiding side plates. The first guiding roller is located in front of and below the second guiding roller, and the lead screw is located above the first guiding roller. The nut block is threadedly connected to the lead screw. One end of the lead screw is connected to the second motor fixed on the guiding side plate, and the line laser profile sensor is installed at the bottom of the nut block.

[0025] Furthermore, the base is also equipped with a PLC control cabinet, a hydraulic station, a laser rangefinder, a pressure sensor, a line laser profile sensor, a first motor, a second motor, and the hydraulic station, which are all electrically connected to the PLC control cabinet. The rotary cylinder, the translation cylinder, and the unwinding cylinder are all connected to the hydraulic station's oil circuit.

[0026] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0027] 1. This invention enables the support of paper rolls for corrugated cardboard production of different widths by sliding two paper support mechanisms on a hexagonal shaft and driving the paper support mechanisms with a translation mechanism. The two paper support mechanisms can move independently, improving the flexibility of the equipment. By setting a laser rangefinder, the position of the paper support mechanisms can be accurately located, better completing the translation and spacing adjustment of the two paper support mechanisms. By setting a lifting mechanism, the support height of the paper roll can be adjusted. By setting a rotary drive mechanism, it is convenient to automatically pick up the paper roll on the ground for feeding or place the remaining paper roll on the ground for unloading.

[0028] 2. By setting up a first buffer mechanism and a second buffer mechanism, the present invention can provide buffer protection when the paper support mechanism rotates to the highest and lowest positions, thereby avoiding equipment damage caused by excessive impact force from the rotation of a heavy paper roll and improving equipment safety and reliability.

[0029] 3. By setting up an elastic clamp assembly, the present invention avoids damage to the paper roll core. By cooperating with the roll exit auxiliary assembly, the elastic clamp assembly and the translation mechanism, the roll can be smoothly and reliably exited from the clamp, thus better protecting the paper roll core.

[0030] 4. By setting up a weighing component, the present invention can detect the weight of the paper roll in real time, which makes it easy to remind staff to replace the paper roll accurately and in a timely manner.

[0031] 5. This invention sets up a guiding and correction mechanism for guiding and correcting the output of raw paper. A line laser profile sensor monitors in real time whether the output of raw paper is offset. When offset occurs, the raw paper support mechanism can be adjusted in combination with a laser rangefinder and a translation mechanism to prevent the output of raw paper from the supported raw paper roll from offsetting. Attached Figure Description

[0032] Figure 1 This is a perspective view of a paper tray used in the production of corrugated cardboard according to an embodiment of the present invention;

[0033] Figure 2 This is a rear view of a paper tray used in corrugated cardboard production according to an embodiment of the present invention;

[0034] Figure 3 yes Figure 2 Sectional view along the AA direction;

[0035] Figure 4 This is a top view of a paper tray used in corrugated cardboard production according to an embodiment of the present invention;

[0036] Figure 5 yes Figure 4 Cross-sectional view along the BB direction;

[0037] Figure 6 yes Figure 4 Schematic diagram of the structure of the flexible clamp;

[0038] Figure 7 yes Figure 5 A magnified view of a section at point C;

[0039] Reference numerals: 1-Base, 2-PLC control cabinet, 3-Hydraulic station, 4-Mounting box, 5-Lifting box, 6-First guide block, 7-First guide groove, 8-First rack, 9-Drive gear, 10-First L-shaped bracket, 11-First motor, 12-Hexagonal shaft, 13-Arc arm, 14-Limit ring, 15-Internal hexagonal gear, 16-Second rack, 17-Rotary cylinder, 18-Second guide groove, 19-Second guide block, 20-Second L-shaped bracket, 21-Translation cylinder, 22-Connecting block, 23-First hydraulic buffer, 24-First mounting plate 25-Second hydraulic buffer, 26-Second mounting plate, 27-Laser rangefinder sensor, 28-Connecting shaft, 29-Housing, 30-Chuck, 31-Limiting plate, 32-Third guide block, 33-Third guide groove, 34-Spring, 35-Unwinding ring, 36-Unwinding cylinder, 37-Guide hole, 38-Guide rod, 39-Outer spherical bearing seat, 40-Pressure sensor, 41-Support plate, 42-Guide side plate, 43-First guide roller, 44-Second guide roller, 45-Screw, 46-Second motor, 47-Nut block, 48-Linear laser profile sensor. Detailed Implementation

[0040] The technical solutions of the present invention will be further described below with reference to the embodiments and accompanying drawings. The described embodiments are only some embodiments of the present invention, and not all embodiments.

[0041] It should be understood that in the description of this invention, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These are used solely for the convenience of describing this patent and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. It should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0042] It should also be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Example

[0044] A paper support frame for corrugated cardboard production includes a base 1 and a paper support device mounted on the base 1. The paper support device includes a paper support mechanism for supporting the paper for corrugated cardboard production.

[0045] Two symmetrically arranged paper support mechanisms are slidably mounted on a hexagonal shaft 12. The two ends of the hexagonal shaft 12 are respectively rotatably mounted on two symmetrically arranged lifting mechanisms. The lifting mechanism for driving the hexagonal shaft 12 to move up and down is mounted on the base 1. The lifting mechanism is equipped with a rotary drive mechanism for driving the hexagonal shaft 12 to rotate. A translation mechanism for driving the paper support mechanism to move horizontally is also installed on the hexagonal shaft 12 between the lifting mechanisms.

[0046] Below the translation mechanism are a first buffer mechanism and a second buffer mechanism. The first buffer mechanism is used to buffer the original paper holding mechanism when it rotates upward to the highest position, and the second buffer mechanism is used to buffer the original paper holding mechanism when it rotates downward to the lowest position.

[0047] The lifting mechanism is also equipped with a guiding and correction mechanism for the output of the raw paper.

[0048] In this embodiment, the paper-supporting device can feed or unload paper rolls of different widths and diameters.

[0049] Specifically, the paper support mechanism includes an arc-shaped arm 13, the lower part of which is slidably mounted on a hexagonal shaft 12, and an elastic clamp 30 assembly rotatably mounted on the upper part of the arc-shaped arm 13. The elastic clamp 30 assembly includes a housing 29, a clamp 30, a limiting plate 31, and a spring 34. A circular hole is opened in the center of one side of the housing 29, and the tail end of the clamp 30 extends into the housing 29 through the circular hole and connects with the limiting plate 31. The limiting plate 31 is slidably disposed within the housing 29. One end of the spring 34 located within the housing 29 contacts the limiting plate 31, and the other end contacts the bottom surface of the housing 29. The bottom surface of the housing 29 is rotatably connected to the upper part of the arc-shaped arm 13 through a connecting shaft 28. Multiple third guide blocks 32 are evenly arranged circumferentially on the limiting plate 31, and a third guide groove 33 is provided inside the housing 29 to slide and match the third guide blocks 32. The elastic clamp 30 assembly can ensure the stability of the paper roll clamping operation and avoid damage to the paper roll core.

[0050] Specifically, a weighing assembly is also provided on the upper outer side of the arc-shaped arm 13. The weighing assembly includes an outer spherical bearing seat 39, a pressure sensor 40, and a support plate 41. The support plate 41 is fixedly installed on the upper outer side of the arc-shaped arm 13. The outer spherical bearing seat 39 is installed on the outer end of the connecting shaft 28. The pressure sensor 40 is installed between the outer spherical bearing seat 39 and the support plate 41. By setting up the weighing assembly, the weight of the paper roll can be detected in real time, facilitating timely and accurate replacement of the paper roll by staff.

[0051] Specifically, the upper part of the arc-shaped arm 13 is also provided with a roll unwinding auxiliary assembly. The roll unwinding auxiliary assembly includes an unwinding ring disc 35 and an unwinding cylinder 36. The unwinding ring disc 35 and the unwinding cylinder 36 are respectively located on both sides of the arc-shaped arm 13. The unwinding cylinder 36 is fixed to the upper part of the outer side of the arc-shaped arm 13. Two guide holes 37 are opened on the upper part of the arc-shaped arm 13. The piston rod of the unwinding cylinder 36 passes through one of the guide holes 37 and connects to the unwinding ring disc 35 located on the inner side of the arc-shaped arm 13. The inner hole of the unwinding ring disc 35 is larger than the outer diameter of the housing 29. The unwinding ring disc 35 is located outside the elastic chuck 30 assembly. The unwinding ring disc 35 is connected to a guide rod 38, which slides into the other guide hole 37. Through the cooperation of the roll unwinding auxiliary assembly, the elastic chuck 30 assembly, and the translation mechanism, the roll can be smoothly and reliably unwound from the chuck 30, thus better protecting the paper roll core.

[0052] Specifically, the lifting mechanism includes a mounting box 4 fixed to the base 1, a lifting box body 5 slidably connected to the inner side of the mounting box 4, a first rack 8 vertically arranged on the outer wall of the lifting box body 5, a first motor 11 arranged inside the mounting box 4, the first motor 11 being fixed inside the mounting box 4 by a first L-shaped bracket 10, and a drive gear 9 meshing with the first rack 8 on the output shaft of the first motor 11; a dovetail groove-type first guide block 6 is provided on the outer wall of the lifting box body 5, and a first guide groove 7 slidingly matching the first guide block 6 is provided on the inner wall of the mounting box 4. The lifting mechanism adjusts the support height of the paper roll, and the drive gear 9 and the first rack 8 cooperate to ensure the stability and reliability of the lifting process. The first guide block 6 and the first guide groove 7 ensure the smoothness and safety of the lifting process.

[0053] Specifically, the rotary drive mechanism includes a second rack 16 and a rotary cylinder 17. The rotary cylinder 17 is vertically mounted on the top of the lifting box 5. The piston rod of the rotary cylinder 17 is connected to the upper end of the second rack 16. The second rack 16 meshes with an internal hexagonal gear 15 located at the end of the hexagonal shaft 12. Both the second rack 16 and the internal hexagonal gear 15 are located inside the lifting box 5. A dovetail-groove type second guide block 19 is provided on the side of the second rack 16. A second guide groove 18 that slides and matches the second guide block 19 is provided on the inner wall of the lifting box 5. A limiting ring 14 is sleeved on the hexagonal shaft 12 and is located inside the lifting box 5. The hexagonal shaft 12 is driven to rotate by the rotary drive mechanism, thereby rotating the paper support mechanism. This facilitates the automatic clamping of the paper roll on the ground for feeding or the placement of the remaining paper roll on the ground for unloading. The hexagonal shaft 12 ensures the stability of the rotation and translation of the paper support mechanism, and the limit ring 14 prevents the paper support mechanism from colliding with the lifting mechanism, thus improving safety.

[0054] Specifically, the translation mechanism includes a translation cylinder 21, which is mounted on a limiting ring 14 via a second L-shaped bracket 20. The piston rod of the translation cylinder 21 is connected to a connecting block 22 located at the lower part of the arc-shaped arm 13 on a different side. A laser rangefinder 27 is also mounted on the second L-shaped bracket 20, located below the hexagonal shaft 12, which detects the distance between the lower part of the arc-shaped arm 13 and the limiting ring 14 on the same side. The translation cylinder 21 pushes the paper support mechanism, enabling the support of paper rolls for corrugated board production of different widths. The two paper support mechanisms can move independently, improving equipment flexibility. By setting the laser rangefinder 27, the position of the paper support mechanism can be accurately located, better enabling the translation of the two paper support mechanisms and the adjustment of their mutual spacing.

[0055] Specifically, the first buffer mechanism includes a vertically arranged first hydraulic buffer 23, which is mounted on the side wall of the lifting box 5 via a first mounting plate 24; the second buffer mechanism includes a horizontally arranged second hydraulic buffer 25, which is mounted on the side wall of the lifting box 5 via a second mounting plate 26. The first and second buffer mechanisms can provide buffer protection when the paper support mechanism rotates to its highest and lowest positions, limiting the rotation angle of the paper support mechanism to within 90°, thus preventing equipment damage caused by excessive impact from the rotation of a heavy paper roll and improving equipment safety and reliability.

[0056] Specifically, the guiding and correcting mechanism includes a guiding side plate 42, a first guiding roller 43, a second guiding roller 44, a lead screw 45, a second motor 46, a nut block 47, and a line laser profile sensor 48. Two symmetrically arranged guiding side plates 42 are respectively set on the top of the lifting box 5. The first guiding roller 43, the second guiding roller 44, and the lead screw 45 are all rotatably installed between the guiding side plates 42. The first guiding roller 43 is located in front of and below the second guiding roller 44, and the lead screw 45 is located above the first guiding roller 43. The nut block 47 is threadedly connected to the lead screw 45. One end of the lead screw 45 is connected to the second motor 46 fixed on the guiding side plate 42. The line laser profile sensor 48 is installed at the bottom of the nut block 47. By setting up a guide and correction mechanism for guiding and correcting the output of raw paper, the linear laser profile sensor 48 monitors in real time whether the output of raw paper is deviated. When a deviation occurs, the raw paper support mechanism can be adjusted in combination with the laser range sensor 27 and the translation mechanism so that the output of raw paper from the supported raw paper roll no longer deviates.

[0057] Specifically, the base 1 is also equipped with a PLC control cabinet 2, a hydraulic station 3, a laser rangefinder 27, a pressure sensor 40, a line laser profile sensor 48, a first motor 11, a second motor 46, and the hydraulic station 3, which are electrically connected to the PLC control cabinet 2 respectively. The rotary cylinder 17, the translation cylinder 21, and the unwinding cylinder 36 are respectively connected to the hydraulic station 3 by oil circuit.

[0058] The above description represents a preferred embodiment of the present invention, used to illustrate the technical solution of the present invention in more detail, thereby enabling those skilled in the art to better understand and utilize the present invention. Those skilled in the art can also make conventional modifications, equivalent substitutions, and improvements within the spirit and principles of the present invention.

Claims

1. A paper support frame for corrugated cardboard production, comprising a base and a paper-supporting device mounted on the base, wherein the paper-supporting device includes a paper-supporting mechanism for supporting the base paper used in corrugated cardboard production; characterized in that: Two symmetrically arranged paper support mechanisms are slidably mounted on a hexagonal shaft. The two ends of the hexagonal shaft are respectively rotatably mounted on two symmetrically arranged lifting mechanisms. The lifting mechanism for driving the hexagonal shaft to move up and down is mounted on the base. The lifting mechanism is equipped with a rotary drive mechanism for driving the hexagonal shaft to rotate. A translation mechanism for driving the paper support mechanism to move horizontally is also installed on the hexagonal shaft between the lifting mechanisms. Below the translation mechanism are a first buffer mechanism and a second buffer mechanism. The first buffer mechanism is used to buffer the original paper holding mechanism when it rotates upward to the highest position, and the second buffer mechanism is used to buffer the original paper holding mechanism when it rotates downward to the lowest position. The lifting mechanism is also equipped with a guiding and correction mechanism for the output of the raw paper. The paper support mechanism includes an arc-shaped arm, the lower part of which is slidably mounted on a hexagonal shaft, and an elastic clamp assembly rotatably mounted on the upper part of the arc-shaped arm. The elastic clamp assembly includes a housing, a clamp, a limiting plate, and a spring. A circular hole is opened in the center of one side of the housing, and the tail end of the clamp extends into the housing through the circular hole and connects with the limiting plate. The limiting plate is slidably disposed in the housing. One end of the spring located in the housing contacts the limiting plate, and the other end contacts the bottom surface of the housing. The bottom surface of the housing is rotatably connected to the upper part of the arc-shaped arm through a connecting shaft. Multiple third guide blocks are evenly arranged around the circumference of the limiting plate, and a third guide groove that slides and matches the third guide blocks is provided in the housing. The upper outer side of the arc-shaped arm is also provided with a weighing component, which includes an outer spherical bearing seat, a pressure sensor, and a support plate. The support plate is fixedly installed on the upper outer side of the arc-shaped arm, the outer spherical bearing seat is installed on the outer end of the connecting shaft, and the pressure sensor is installed between the outer spherical bearing seat and the support plate. The lifting mechanism includes a mounting box fixed to the base, a lifting box body slidably connected to the inside of the mounting box, a first rack vertically arranged on the outer wall of the lifting box, a first motor arranged inside the mounting box, the first motor being fixed inside the mounting box by a first L-shaped bracket, and a drive gear meshing with the first rack being arranged on the output shaft of the first motor; a dovetail groove-shaped first guide block is arranged on the outer wall of the lifting box, and a first guide groove slidingly matching the first guide block is arranged on the inner wall of the mounting box.

2. The paper tray for corrugated cardboard production according to claim 1, characterized in that: The upper part of the arc-shaped arm is also provided with a drum unwinding auxiliary assembly, which includes an unwinding ring disc and an unwinding cylinder. The unwinding ring disc and the unwinding cylinder are located on both sides of the arc-shaped arm. The unwinding cylinder is fixed to the upper part of the outer side of the arc-shaped arm. Two guide holes are opened on the upper part of the arc-shaped arm. The piston rod of the unwinding cylinder passes through one of the guide holes and is connected to the unwinding ring disc located on the inner side of the arc-shaped arm. The inner hole of the unwinding ring disc is larger than the outer diameter of the housing. The unwinding ring disc is located outside the elastic chuck assembly. The unwinding ring disc is connected to a guide rod, which slides into the other guide hole.

3. The paper tray for corrugated cardboard production according to claim 2, characterized in that: The guiding and correction mechanism includes a guiding side plate, a first guiding roller, a second guiding roller, a lead screw, a second motor, a nut block, and a line laser profile sensor. Two symmetrically arranged guiding side plates are respectively set on the top of the lifting box. The first guiding roller, the second guiding roller, and the lead screw are all rotatably installed between the guiding side plates. The first guiding roller is located in front of and below the second guiding roller, and the lead screw is located above the first guiding roller. The nut block is threadedly connected to the lead screw. One end of the lead screw is connected to the second motor fixed on the guiding side plate. The line laser profile sensor is installed at the bottom of the nut block.

4. The paper tray for corrugated cardboard production according to claim 3, characterized in that: The rotary drive mechanism includes a second rack and a rotary cylinder. The rotary cylinder is vertically mounted on the top of the lifting box. The piston rod of the rotary cylinder is connected to the upper end of the second rack. The second rack meshes with an internal hexagonal gear located at the end of the hexagonal shaft. Both the second rack and the internal hexagonal gear are located inside the lifting box. A dovetail-groove type second guide block is provided on the side of the second rack. A second guide groove that slides and matches the second guide block is provided on the inner wall of the lifting box. A limiting ring is sleeved on the hexagonal shaft and is located inside the lifting box.

5. The paper tray for corrugated cardboard production according to claim 4, characterized in that: The translation mechanism includes a translation cylinder, which is mounted on a limiting ring via a second L-shaped bracket. The piston rod of the translation cylinder is connected to a connecting block located at the lower part of the arc-shaped arm on the opposite side. A laser rangefinder is also mounted on the second L-shaped bracket. The laser rangefinder is located below the hexagonal axis and detects the distance between the lower part of the arc-shaped arm and the limiting ring on the same side.

6. The paper tray for corrugated cardboard production according to claim 5, characterized in that: The first buffer mechanism includes a vertically arranged first hydraulic buffer, which is mounted on the side wall of the lifting box via a first mounting plate; the second buffer mechanism includes a horizontally arranged second hydraulic buffer, which is mounted on the side wall of the lifting box via a second mounting plate.

7. The paper tray for corrugated cardboard production according to claim 6, characterized in that: The base is also equipped with a PLC control cabinet, a hydraulic station, a laser rangefinder, a pressure sensor, a line laser profile sensor, a first motor, a second motor, and the hydraulic station, which are electrically connected to the PLC control cabinet. The rotary cylinder, the translation cylinder, and the unwinding cylinder are connected to the hydraulic station's oil circuit.

Images