Paperboard conveying mechanism, paperboard deflection adjusting device and paperboard processing equipment

Abstract

The utility model relates to a paperboard conveying mechanism, a paperboard deflection adjusting device and paperboard processing equipment. The paperboard conveying mechanism comprises a base and a controller. The device is characterized by further comprising an upper pressing wheel, an upper wheel set, a lower wheel set and an upper lifting device, and the upper pressing wheel is rotationally installed on the base through an upper wheel shaft; the upper wheel set is used for mounting an upper belt; after the upper wheel set is provided with the upper belt, the upper belt forms an upper chord section arranged in the advancing direction of a paperboard. The upper lifting device is used for driving the upper wheel set to move up and down relative to the base; the lower wheel set is used for mounting a lower belt; after the lower wheel set is provided with the lower belt, the lower belt forms a lower chord section arranged in the advancing direction of a paperboard, one side edge part of the paperboard is stably clamped and conveyed between the upper pressing wheel and the lower chord section, and the position of the upper chord section can be selectively controlled through the lifting action of the upper lifting device. And one side edge part of the paperboard is selectively clamped and conveyed between the upper chord section and the lower chord section.

Description

Technical Field

[0001] This invention relates to the technical field of paperboard processing, and in particular to a paperboard conveying mechanism, a paperboard deflection adjustment device, and paperboard processing equipment. Background Technology

[0002] With the continuous improvement of automation and intelligence, paperboard processing equipment is also constantly being improved. To quickly transfer paperboard from one process to another, conveyor systems are typically installed between different processing steps. Common conveyor systems include rollers or conveyor belts. However, some processing steps have requirements regarding the orientation of the paperboard, such as cutting, creasing, and printing. These steps require the paperboard to be placed in a specified orientation and angle when entering the processing position. If the positional deviation of the paperboard is too large, not only is it necessary to increase the edge allowance during cutting, but it can also cause positional shifts during printing or processing, resulting in product scrap, all of which increase manufacturing costs. One way to solve this problem is to add positioning fixtures at the processing position to achieve paperboard positioning. However, this requires stopping the conveyor or pausing the paperboard's movement and adding personnel for adjustments. This not only increases the labor intensity of personnel but also requires intermittent paperboard conveying, which reduces the processing efficiency of the paperboard.

[0003] To improve the overall processing efficiency of cardboard processing equipment, improvements have been made to the conveying devices connecting different processing steps, allowing the cardboard to adjust its position and angle during transport. For example, Chinese invention patent CN208361452U separates a leading edge paper feeding skew adjustment device, which includes a conveying module for storing and conveying multiple cardboards, a power module providing the necessary power to the conveying module, a paper feeding module conveying the aforementioned cardboards one by one to a machine for processing, a sensing module installed on the paper feeding module for sensing whether the cardboard is skewed, and a control module connected to the power module and the sensing module respectively. The sensing module detects skew in the cardboard in the paper feeding area, transmits an abnormal signal to the control module, and the control module calculates the skew distance and speed difference between the two ends of the cardboard, and transmits a correction value to the power module to correct the position of the cardboard in the paper feeding area. However, referring to the attached diagram, it's clear that this adjustment device only illustrates a short conveying path from the paper storage mechanism to the paper feeding module, addressing the issue of paperboard misalignment caused by friction between the paperboards. In actual paperboard conveying applications, however, without an upper clamping device along the conveying path between processes, the already aligned paperboards are prone to detaching from the bottom conveying module during movement, leading to misalignment due to uneven localized force. Therefore, reducing paperboard misalignment during conveying and adjusting the position of misaligned paperboards become problems that need to be solved. Summary of the Invention

[0004] To overcome at least one of the following problems in existing technologies: reducing offset during conveying, adjusting the position of offset cardboard, and new problems arising from solving these two problems, this invention proposes a cardboard conveying mechanism, including a base and a controller; it also includes an upper pressure roller, an upper roller assembly, a lower roller assembly, and an upper lifting device. The upper pressure roller is rotatably mounted on the base via an upper roller shaft, which is driven by an upper pressure roller rotation driver. The upper pressure roller rotation driver is signal-connected to the controller, which controls the rotational speed of the upper pressure roller via the upper pressure roller rotation driver. The upper roller assembly is used to mount an upper belt, which is driven by an upper roller assembly driver. The upper roller assembly driver is signal-connected to the controller, which controls the rotational speed of the upper roller assembly via the upper roller assembly driver, thereby controlling the movement speed of the upper belt. The upper roller assembly is movably arranged on the base and located in front of the upper pressure roller. When the upper belt is mounted on the upper roller assembly, the upper belt forms a section along... An upper chord section is arranged in the forward direction of the cardboard; the upper lifting device is used to drive the upper wheel assembly to move up and down relative to the base, the upper lifting device is signal-connected to the controller, and the controller is used to control the lifting action of the upper lifting device; the lower wheel assembly is used to install the lower belt, the lower wheel assembly is driven by the lower wheel assembly driver, the lower wheel assembly driver is signal-connected to the controller, and the controller is used to control the rotation speed of the lower wheel assembly through the lower wheel assembly driver, thereby controlling the moving speed of the lower belt; the lower wheel assembly is arranged on the base, and when the lower belt is installed on the lower wheel assembly, the lower belt forms a lower chord section arranged in the forward direction of the cardboard, the upper pressure roller and the upper chord section are located above the lower chord section, the upper pressure roller and the lower chord section form a stable clamping and transmission of one side of the cardboard, and the lifting action of the upper lifting device can be used to selectively control the position of the upper chord section, so that the upper chord section and the lower chord section can selectively clamp and transmit one side of the cardboard.

[0005] The base is the main basic component of the cardboard conveying mechanism. It is used to connect the frame of the processing equipment and to connect and support the moving components such as the upper pressure roller, upper roller group, lower roller group, and upper lifting device.

[0006] The upper pressure roller is a rotatable conveying component that presses against the upper surface of one side of the cardboard with a certain clamping force. The outer edge of the upper pressure roller forms an approximately linear pressing surface with the upper surface of the cardboard. Due to the small pressing area, the cardboard can be easily adjusted in deflection angle during the pressing and conveying process. The upper pressure roller is driven by a rotary driver, and the controller controls the rotation speed of the upper pressure roller by controlling the rotary driver. Furthermore, the upper pressure roller is connected to the base via an upper roller shaft. Therefore, the upper roller shaft and the upper pressure roller are not affected by the lifting action of the upper lifting device. Thus, when the upper lifting device lifts the upper roller assembly, the upper pressure roller remains in contact with the cardboard.

[0007] The upper wheel axle is a rotating shaft component connected to the base. It is connected to the upper pressure wheel rotary drive to serve as a transmission shaft that drives the upper pressure wheel. It can also serve as the central shaft for the rotation of the upper vertical plate below. Thus, when the upper wheel assembly and the upper belt are lifted, the upper wheel axle is not lifted.

[0008] The upper pulley assembly consists of at least two pulleys for mounting the upper belt, and is capable of vertical movement relative to the base. When the upper belt is mounted on the upper pulley assembly, it is stretched taut, forming a taut section on the side closest to the cardboard; this section is the upper chord. The upper chord and the lower chord below it can clamp the cardboard in the vertical direction. Since both the upper and lower belts can rotate, the cardboard is conveyed from front to back, clamped by the two belts. Because both the upper and lower belts are flat and form surface contact with the cardboard, the cardboard is less prone to deflection during transport. To drive the upper belt, at least one pulley in the upper pulley assembly is connected to the upper pulley assembly driver, allowing the controller to control the rotational speed of the upper pulley assembly and the upper belt via the upper pulley assembly driver. The upper pressure wheel rotary driver and the upper wheel group driver can be set separately or combined into one. When combined into one driver, the upper pressure wheel and the upper wheel group are connected by gears or belts. Under the drive of one driver, the rotation speed of the upper belt and the upper pressure wheel can be controlled more easily and synchronously.

[0009] The lifting device is a mechanism used to lift the upper pulley assembly and the upper belt mounted on it, typically a motor or cylinder. Two commonly used lifting methods are: first, the lifting device horizontally lifts the upper pulley assembly and the upper belt mounted on it, allowing the upper chord of the upper belt to move upwards away from the cardboard; second, the upper pulley assembly and the upper belt mounted on it are rotatably connected to the base, and the lifting device tilts and lifts the upper pulley assembly and upper belt in a rotating manner, causing the upper chord of the upper belt to also rotate and tilt above the cardboard.

[0010] The lower pulley assembly consists of at least two pulleys for mounting the lower belt. When the lower belt is mounted on the lower pulley assembly, it is stretched open, and the stretched belt forms a lower chord section on the side closest to the cardboard when rotating. To drive the lower belt, at least one pulley in the lower pulley assembly is connected to the lower pulley assembly driver. Thus, by controlling the lower pulley assembly driver, the rotational speed of the lower pulley assembly and the lower belt mounted on it can be controlled.

[0011] The upper pressure roller and upper chord section are located above the lower chord section, and the upper roller assembly is located in front of the upper pressure roller. In this way, the cardboard is first clamped by the upper chord section and the lower chord section during the front-to-back conveying process, and then clamped by the upper pressure roller and the lower chord section. If it is necessary to adjust the deflection angle of the cardboard, it is generally preferred to lift the upper roller assembly and the upper belt. At this time, the cardboard is clamped and conveyed by the upper pressure roller and the lower chord section.

[0012] The lifting device drives the upper wheel assembly to move up and down relative to the base, and the upper belt is also driven along with it. The lifting action of the lifting device selects and controls the position of the upper chord segment. After movement, the upper belt has two states: First, the upper chord segment is completely separated from the upper surface of the cardboard. Second, by controlling the rotation angle, the lower end of the upper chord segment lightly presses against the upper surface of the cardboard to form an approximately linear pressing surface. The advantage of this design is that it adds a force application point on the cardboard, which, together with the upper pressure roller, can adjust cardboard that is heavy or tightly clamped.

[0013] Compared with the prior art, the beneficial technical effects of the cardboard conveying mechanism of the present invention are as follows: First, the cardboard conveying mechanism has two clamping and conveying structures: one is the upper and lower clamping structure formed by the upper and lower chord sections on the front side, and the other is the clamping structure formed by the upper pressure roller and the lower chord section on the rear side. This can effectively ensure the stability of the cardboard during the conveying process. Second, both the upper and lower chord sections are flat strip structures, forming surface contact with the cardboard. This makes it less likely for the cardboard to deflect during the conveying process, greatly reducing the possibility of deflection. Third, by setting the upper lifting device, the position of the upper chord section can be selected and controlled by the lifting action of the upper lifting device. This can reduce the clamping area of ​​the upper chord section on the cardboard or completely separate the upper chord section from the cardboard, which provides conditions for subsequent adjustment of the deflection angle of the cardboard.

[0014] The cardboard deflection adjustment device includes two sets of cardboard conveying mechanisms, which are arranged in a left-right mirror arrangement, and the bases of the two sets of cardboard conveying mechanisms are detachably and fixedly connected together by a connecting mechanism.

[0015] The cardboard deflection adjustment device can not only transport cardboard from front to back, but also adjust the deflection angle of the cardboard. The cardboard transport and adjustment process is as follows: 1) The left and right sides of the cardboard are respectively clamped and transported forward by the upper and lower chords of the two sets of cardboard transport mechanisms arranged in a left and right mirror image; 2) After the left and right front ends of the cardboard move out of the upper chord, they can be clamped by the upper pressure roller and the lower chord. At this time, the left and right sides of the cardboard are simultaneously clamped and transported by the upper pressure roller, the lower belt and the upper belt. At this time, the controller controls the output speed of the upper pressure roller rotation driver, the upper wheel group driver and the lower wheel group driver to make the cardboard stably transported from front to back; 3) When it is necessary to adjust the deflection angle of the cardboard, the controller first controls the upper lifting device to lift the upper belt, and then adjusts the rotation speed of one or more of the upper pressure rollers and the lower belt on the left and right sides to adjust the deflection angle of the cardboard.

[0016] Compared with the prior art, the beneficial technical effects of the cardboard deflection adjustment device of the present invention are as follows: First, by setting up cardboard deflection adjustment devices arranged on the left and right sides, a stable conveying force can be provided to the left and right sides of the cardboard, so that the cardboard can be evenly stressed on the left and right sides, reducing the deviation of the cardboard during conveying; Second, it is difficult to adjust the position and angle of the cardboard when it is clamped by the belts on the upper and lower sides. In order to solve this problem, the inventor added an upper lifting device to the conveying device to lift the upper belt pressing on the cardboard. In this way, the upper surfaces of the left and right sides of the cardboard are no longer in surface contact with the upper belt. Then, by adjusting the rotation speed of the upper pressure roller and the lower belt, the position and angle of the cardboard can be adjusted more easily.

[0017] Because of the above-mentioned features and advantages, this invention can be applied to paperboard conveying mechanisms, paperboard deflection adjustment devices, and paperboard processing equipment. Attached Figure Description

[0018] Figure 1 This is a frontal view structural diagram of the cardboard processing equipment;

[0019] Figure 2 This is a frontal view of the cardboard conveying mechanism described on the left, showing the lifting state. Detailed Implementation

[0020] The structure of the paperboard conveying mechanism 2, the paperboard deflection adjustment device, and the paperboard processing equipment using the technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0021] Except where explicitly stated that they are equivalent or alternative implementation schemes, the various implementation details disclosed below may be selectively applied or combined in one embodiment even if they are not directly related or synergistic in terms of function.

[0022] like Figure 1 As shown, a paperboard processing device includes a paper storage device 11 and a rolling device 12, and also includes a paperboard deflection adjustment device 13. The paper storage device 11 is located in front of the paperboard deflection adjustment device 13 and is used to provide paperboard to the paperboard deflection adjustment device 13. The rolling device 12 is located behind the paperboard deflection adjustment device 13 and is used to receive the paperboard conveyed by the paperboard deflection adjustment device 13 and roll crease lines or print patterns on the paperboard.

[0023] The cardboard deflection adjustment device 13 includes two cardboard conveying mechanisms 2, which are arranged in a left-right mirror configuration. The bases 21 of the two cardboard conveying mechanisms 2 are detachably and fixedly connected together via a connecting mechanism. For ease of explanation, the cardboard conveying mechanism 2 arranged on the left side is referred to as the left cardboard conveying mechanism, and the cardboard conveying mechanism 2 arranged on the right side is referred to as the right cardboard conveying mechanism. To accommodate different cardboard sizes, the left and right cardboard conveying mechanisms are two components movably connected to the frame 14 at a relative interval. These two components can be adjusted according to the width of the cardboard.

[0024] Since the structures of the two sets of paperboard conveying mechanisms 2 are basically the same, the paperboard conveying mechanism 2 on the left side will be described in detail below.

[0025] The cardboard conveying mechanism 2 includes a base 21 and a controller; it also includes an upper pressure roller 4, an upper roller assembly 71, a lower roller assembly 32, and an upper lifting device. The upper pressure roller 4 is rotatably mounted on the base 21 via an upper roller shaft 41. The upper roller shaft 41 is driven by an upper pressure roller rotation driver, and the upper pressure roller rotation driver is signal-connected to the controller. The controller is used to control the rotation speed of the upper pressure roller 4 through the upper pressure roller rotation driver. The upper roller assembly 71 is used to mount an upper belt 5. The upper roller assembly 71 is driven by an upper roller assembly driver, and the upper roller assembly driver is signal-connected to the controller. The controller is used to control the rotation speed of the upper roller assembly 71 through the upper roller assembly driver, thereby controlling the moving speed of the upper belt 5. The upper roller assembly 71 is movably arranged on the base 21 and located in front of the upper pressure roller 4. When the upper belt 5 is mounted on the upper roller assembly 71, the upper belt 5 forms an upper chord segment 51 arranged along the cardboard forward direction. The upper lifting device is used to drive the upper roller assembly 71 relative to the base 21. The base 21 moves up and down. The upper lifting device is signal-connected to the controller, which controls the lifting action of the upper lifting device. The lower wheel assembly 32 is used to install the lower belt 3. The lower wheel assembly 32 is drive-connected to the lower wheel assembly driver 73. The lower wheel assembly driver 73 is signal-connected to the controller, which controls the rotation speed of the lower wheel assembly 32 through the lower wheel assembly driver 73, thereby controlling the movement speed of the lower belt 3. The lower wheel assembly 32 is arranged on the base 21. When the lower belt 3 is installed on the lower wheel assembly 32, the lower belt 3 forms a lower chord segment 31 arranged along the forward direction of the cardboard. The upper pressure roller 4 and the upper chord segment 51 are located above the lower chord segment 31. The upper pressure roller 4 and the lower chord segment 31 form a stable clamping and transmission of one side of the cardboard. At the same time, the lifting action of the upper lifting device can be used to selectively control the position of the upper chord segment 51, so that the upper chord segment 51 and the lower chord segment 31 selectively clamp and transmit one side of the cardboard.

[0026] The base 21 is the main basic component of the cardboard conveying mechanism 2. It is used to connect the main body of the frame 14 of the processing equipment, and also to connect and support the moving components such as the upper pressure roller 4, the upper roller group 71, the lower roller group 32, and the upper lifting device.

[0027] The upper pressure roller 4 and the upper chord section 51 are located above the lower chord section 31, and the upper wheel assembly 71 is located in front of the upper pressure roller 4. Thus, during the front-to-back conveying process, the cardboard is first clamped by the upper chord section 51 and the lower chord section 31, and then by the upper pressure roller 4 and the lower chord section 31. The upper wheel assembly 71 is a wheel assembly consisting of at least two pulleys for mounting the upper belt 5. When the upper belt 5 is mounted on the upper wheel assembly 71, it is stretched open, forming a stretched and taut belt section near the cardboard; this belt section is the upper chord section 51. Similarly, the lower wheel assembly 32 is also a wheel assembly consisting of at least two pulleys. When the lower belt 3 is mounted on the lower wheel assembly 32, the stretched lower belt 3 forms the lower chord section 31 near the cardboard during rotation. Furthermore, in order to drive the upper belt 5 and the lower belt 3, at least one pulley in the upper pulley group 71 is connected to the upper pulley group driver, and at least one pulley in the lower pulley group 32 is connected to the lower pulley group driver 73. By controlling the upper pulley group driver and the lower pulley group driver 73, the rotation speed of the upper belt 5 and the lower belt 3 can be achieved. The upper chord segment 51 of the upper belt 5 is arranged above the lower chord segment 31 of the lower belt 3 and is arranged approximately parallel to it. The length of the lower chord segment 31 of the lower belt 3 is greater than the length of the upper chord segment 51 of the upper belt 5. The two form a conveying channel that allows the cardboard to pass through. After the cardboard enters the conveying channel, it can be clamped by the lower chord segment 31 of the lower belt 3 and the upper chord segment 51 of the upper belt 5 to form a surface contact connection. By controlling the linear speed of the lower belt 3 and the upper belt 5 to be consistent, the cardboard can move forward at a stable speed. Moreover, since the upper and lower surfaces of the left side of the cardboard are clamped, and both the upper belt 5 and the lower belt 3 are flat belt structures, the belts and the cardboard form a surface contact, so the cardboard is not easy to deflect during the conveying process.

[0028] The upper pressure roller 4 differs from the upper belt 5. When the cardboard passes through the upper pressure roller 4, the outer edge of the upper pressure roller 4 forms an approximately linear pressing surface with the upper surface of the cardboard. The upper wheel shaft 41 is a rotating shaft component connected to the base 21. One end of the upper wheel shaft 41 is connected to the upper pressure roller rotary driver, and the other end is connected to the upper pressure roller 4. The upper wheel shaft 41 serves as a transmission shaft that drives the upper pressure roller 4. Since the upper wheel shaft 41 is not affected by the lifting action of the upper lifting device 6, the upper pressure roller 4 remains in contact with the cardboard even when the upper lifting device lifts the upper roller assembly 71 and the upper belt 5.

[0029] In this embodiment, the upper pressure wheel rotary driver and the upper wheel group driver are either separately and independently configured or combined into one. For example, in this embodiment, the upper pressure wheel rotary driver and the upper wheel group driver are combined into one. Only the upper pressure wheel rotary driver is used, and the upper pressure wheel 4 and the upper wheel group 71 are connected by a belt for transmission. In this way, the rotation speed of the upper belt 5 and the upper pressure wheel 4 can be more easily controlled synchronously by driving with a single driver.

[0030] The lifting device is a mechanism for lifting the upper wheel assembly 71 and the upper belt 5 mounted on the upper wheel assembly 71. In this embodiment, a motor is used. There are two commonly used lifting methods. The first, which is the solution in this embodiment, involves rotatably connecting the upper wheel assembly 71 and the upper belt 5 mounted on the upper wheel assembly 71 to the base 21. The lifting device can tilt and lift the upper wheel assembly 71 and the upper belt 5 in a rotatable manner, so that the upper chord section 51 of the upper belt 5 is also tilted and arranged above the cardboard. The second lifting method involves lifting the upper wheel assembly 71 and the upper belt 5 mounted on the upper wheel assembly 71 horizontally upward using the lifting device, so that the upper chord section 51 of the upper belt 5 can be moved upward and away from the cardboard.

[0031] The lifting device drives the upper wheel assembly 71 to move up and down relative to the base 21. The upper belt 5, installed on the upper wheel assembly 71, is also driven along with it. Therefore, the lifting action of the lifting device selects and controls the position of the upper chord segment 51. After movement, the upper belt 5 has two states: First, whether lifting horizontally or rotating, the upper chord segment 51 is completely separated from the upper surface of the cardboard. Second, by controlling the rotation angle, the lower end of the upper chord segment 51 lightly presses against the upper surface of the cardboard, forming an approximately linear pressing surface. This design adds a force application point to the cardboard, allowing adjustment of heavier or tightly clamped cardboard together with the upper pressure roller 4. By setting up the lifting device, the position of the upper chord segment 51 can be selected and controlled through its lifting action, reducing the clamping area of ​​the upper chord segment 51 on the cardboard or completely separating the upper chord segment 51 from the cardboard. This provides conditions for subsequent adjustment of the cardboard's deflection angle.

[0032] In order to better drive the upper wheel assembly 71 to move, a further technical solution may include an upper upright plate 7, which is movably connected to the base 21. The upper wheel assembly 71 is mounted on the upper upright plate 7, and the lifting device can move the upper wheel assembly 71 by driving the upper upright plate 7 to move up and down.

[0033] Furthermore, the upper plate 7 is also provided with an upper plate hole, through which the upper wheel shaft 41 can pass and connect to the base 21. When the upper lifting device performs a lifting action, it can drive the upper plate 7 and the upper wheel assembly 71 connected to the upper plate 7 to rotate together around the upper wheel shaft 41.

[0034] The upper plate 7 is provided with a lifting hole 74. The lifting device includes an upper lifting motor and an eccentric shaft 62. The upper lifting motor is connected to the base 21. One end of the eccentric shaft 62 is connected to the output shaft of the upper lifting motor 61, and the other end is connected to the lifting hole 74. The upper lifting motor can drive the upper plate 7 to rotate around the upper wheel axle 41 through the eccentric shaft 62. In other equivalent embodiments, the lifting device includes a left lifting cylinder, which lifts the upper plate 7.

[0035] To improve the support effect of the lower belt 3 on the cardboard, it also includes several support wheels 82 and support belts 83 mounted on the support wheels 82. The support wheels 82 and support belts 83 are located inside the lower belt 3 to support the lower chord section 31 of the lower belt 3. It also includes a negative pressure conveyor box 81. The lower wheel assembly 32, support wheels 82, and support belts 83 are disposed in the negative pressure conveyor box 81. The upper surface of the lower chord section 31 of the lower belt 3 mounted on the lower wheel assembly 32 is higher than the upper surface of the negative pressure conveyor box 81. A series of spaced suction holes are provided on one ring of the lower belt 3. By providing suction holes on the lower belt 3, the passing cardboard can be adsorbed onto the lower chord section 31 of the lower belt 3, which helps reduce cardboard deviation and paper scraps and dust on the conveyor belt.

[0036] Since cardboard thickness varies, in order to accommodate cardboard of different thicknesses, the cardboard conveying mechanism 2 also includes a lower upright plate, which is movably connected to the base 21, and the lower wheel assembly 32 is mounted on the lower upright plate; it also includes a lower lifting device 9, which includes a lower adjusting motor 91 and two adjusting cams 92 connected to the output shaft of the lower adjusting motor 91. The two adjusting cams 92 press against the lower surfaces of the two lower upright plates 8 arranged on the left and right, respectively. The lower adjusting motor 91 is signal-connected to the controller, which can control the lower adjusting motor 91 to drive the two adjusting cams 92 to rotate, thereby adjusting the height of the lower upright plate, so that the lower wheel assembly 32 and the lower chord section 31 of the lower belt 3 mounted on it can selectively move away from or closer to the upper pressure roller 4 and the upper chord section 51.

[0037] Furthermore, the cardboard conveying mechanism 2 also includes a left position sensor 15 and a right position sensor 15' connected to the controller. The left position sensor 15 is arranged behind the left upper pressure roller 4, and a left detection area is provided below the left position sensor 15. The right position sensor 15' is arranged behind the right upper pressure roller 4, and a right detection area is provided below the right position sensor 15'. The left position sensor 15 is used to detect the left arrival signal when the left front end of the cardboard reaches the left detection area and can send the left arrival signal to the controller. The right position sensor 15' is used to detect the right arrival signal when the right side of the cardboard reaches the right detection area and can send the right arrival signal to the controller. The controller analyzes and compares the results of the left arrival signal and the right arrival signal, and then controls the lifting devices on the left and right sides to lift the upper roller group 71. Based on this, the conveying speed of one or more of the left or right upper pressure roller 4 and lower belt 3 is adjusted to adjust the deflection angle of the cardboard.

[0038] Furthermore, it also includes a left front guard 16 and a right front guard 16', which are respectively arranged on the front side of the cardboard conveying mechanism 2 on the left and right sides. The front sides of the left front guard 16 and the right front guard 16' block and position other cardboard stacked on top of the bottom cardboard. The left position sensor 15 can detect the left arrival signal when the left side of the cardboard moves from the left front guard 16 to the left detection area, and the right position sensor 15' can detect the right arrival signal when the right side of the cardboard moves from the right front guard 16' to the right detection area.

[0039] The specific conveying adjustment process is as follows:

[0040] 1) The cardboard starts from the left front guard 16 and the right front guard 16'. After moving a certain distance, the cardboard is clamped and conveyed forward by the upper chord 51 and lower chord 31 of the two sets of cardboard conveying mechanisms 2 arranged on the left and right sides.

[0041] 2) After the left and right front ends of the cardboard are moved out of the upper chord section 51, they can be clamped by the upper pressure roller 4 and the lower chord section 31. At this time, the left and right sides of the cardboard are simultaneously clamped and conveyed by the upper pressure roller 4, the lower belt 3 and the upper belt 5. At this time, by controlling the output speed of the upper pressure roller rotation driver, the upper roller group driver and the lower roller group driver 73 through the controller, the cardboard can be stably conveyed from front to back.

[0042] 3) The left and right front ends of the cardboard move out of the upper pressure roller 4 and enter the left detection area and right detection area, respectively. When the controller detects that the cardboard is not placed correctly, the deflection angle of the cardboard needs to be adjusted. The controller first controls the upper lifting device to lift the upper belt 5, and then adjusts the deflection angle of the cardboard by adjusting the rotation speed of one or more of the upper pressure roller 4 and the lower belt 3 on the left and right sides.

[0043] Compared with the prior art, the beneficial technical effects of the cardboard deflection adjustment device 13 of the present invention are as follows: First, by setting the cardboard deflection adjustment device 13 arranged on the left and right, a stable conveying force can be provided to the left and right sides of the cardboard, so that the cardboard can be evenly stressed on the left and right sides, reducing the deviation of the cardboard during conveying; Second, it is difficult to adjust the position and angle of the cardboard when it is clamped by the belts on the upper and lower sides. In order to solve this problem, the inventor added an upper lifting device to the conveying device to lift the upper belt 5 pressing on the cardboard. In this way, the upper surfaces of the left and right sides of the cardboard are no longer in surface contact with the upper belt 5. Then, by adjusting the rotation speed of the upper pressure roller 4 and the lower belt 3, the position and angle of the cardboard can be adjusted more easily.

Claims

1. A cardboard conveying mechanism, comprising a base and a controller; characterized in that, It also includes an upper pressure roller, an upper roller assembly, a lower roller assembly, and an upper lifting device. The upper pressure roller is rotatably mounted on the base via an upper roller shaft. The upper roller shaft is driven by an upper pressure roller rotation driver. The upper pressure roller rotation driver is signal-connected to the controller. The controller is used to control the rotation speed of the upper pressure roller through the upper pressure roller rotation driver. The upper pulley assembly is used to mount the upper belt. The upper pulley assembly is driven by an upper pulley assembly driver, and the upper pulley assembly driver is signal-connected to the controller. The controller is used to control the rotational speed of the upper pulley assembly through the upper pulley assembly driver, thereby controlling the moving speed of the upper belt. The upper pulley assembly is movably arranged on the base and located in front of the upper pressure roller. When the upper belt is mounted on the upper pulley assembly, the upper belt forms an upper chord section arranged along the paperboard's forward direction. The upper lifting device is used to drive the upper pulley assembly to move up and down relative to the base. The upper lifting device is signal-connected to the controller, and the controller is used to control the lifting action of the upper lifting device. The lower pulley assembly is used to install the lower belt. The lower pulley assembly is driven by the lower pulley assembly driver, and the lower pulley assembly driver is signal-connected to the controller. The controller is used to control the rotation speed of the lower pulley assembly through the lower pulley assembly driver, thereby controlling the movement speed of the lower belt. The lower pulley assembly is arranged on the base. When the lower belt is installed on the lower pulley assembly, the lower belt forms a lower chord section arranged along the forward direction of the cardboard. The upper pressure roller and the upper chord section are located above the lower chord section. The upper pressure roller and the lower chord section form a stable clamping and transmission on one side of the cardboard. At the same time, the position of the upper chord section can be selectively controlled by the lifting action of the upper lifting device, so that the upper chord section and the lower chord section can selectively clamp and transmit on one side of the cardboard.

2. The cardboard conveying mechanism according to claim 1, characterized in that, It also includes an upper plate, which is movably connected to the base, and an upper wheel assembly is mounted on the upper plate. The lifting device can move the upper plate up and down, thereby moving the upper wheel assembly.

3. The cardboard conveying mechanism according to claim 2, characterized in that, The upper plate is also provided with an upper plate hole, through which the upper wheel axle can pass and connect to the base. When the upper lifting device performs a lifting action, it can drive the upper plate and the upper wheel assembly connected to the upper plate to rotate together around the upper wheel axle.

4. The cardboard conveying mechanism according to claim 3, characterized in that, The upper plate is provided with a lifting hole. The upper lifting device includes an upper lifting motor and an eccentric shaft. The upper lifting motor is connected to the base. One end of the eccentric shaft is connected to the output shaft of the upper lifting motor, and the other end is connected to the lifting hole. The upper lifting motor can drive the upper plate to rotate around the upper wheel shaft through the eccentric shaft.

5. The cardboard conveying mechanism according to claim 1, characterized in that, The upper pressure wheel rotary driver and the upper wheel group driver can be set separately or combined into one.

6. The cardboard conveying mechanism according to claim 1, characterized in that, It also includes several support wheels and support belts mounted on the support wheels, the support wheels and support belts being disposed inside the lower belt to support the lower chord of the lower belt.

7. The cardboard conveying mechanism according to claim 6, characterized in that, It also includes a negative pressure conveying air box, in which the lower wheel assembly, support wheel and support belt are arranged. The upper surface of the lower chord section of the lower belt installed on the lower wheel assembly is higher than the upper surface of the negative pressure conveying air box. A ring of the lower belt is provided with spaced suction holes.

8. A cardboard deflection adjustment device, characterized in that, It includes two sets of paperboard conveying mechanisms as described in any one of claims 1 to 7, the two sets of paperboard conveying mechanisms are arranged in a left-right mirror arrangement, and the bases of the two sets of paperboard conveying mechanisms are detachably fixed together by a connecting mechanism.

9. The cardboard deflection adjustment device according to claim 8, characterized in that, The cardboard conveying mechanism also includes a lower upright plate, which is movably connected to the base, and the lower wheel assembly is mounted on the lower upright plate; it also includes a lower lifting device, which includes a lower adjusting motor and two adjusting cams connected to the output shaft of the lower adjusting motor. The two adjusting cams press against the lower surfaces of the two lower upright plates arranged on the left and right, respectively. The lower adjusting motor is signal-connected to the controller, which can control the lower adjusting motor to drive the two adjusting cams to rotate, thereby adjusting the height of the lower upright plate, so that the lower wheel assembly and the lower chord of the lower belt mounted on it can selectively move away from or closer to the upper pressure roller and the upper chord.

10. The cardboard deflection adjustment device according to claim 8, characterized in that, The system also includes a left position sensor and a right position sensor connected to the controller. The left position sensor is located behind the left upper pressure roller, and a left detection area is located below it. The right position sensor is located behind the right upper pressure roller, and a right detection area is located below it. The left position sensor detects the left arrival signal when the front left end of the cardboard reaches the left detection area and sends the left arrival signal to the controller. The right position sensor detects the right arrival signal when the right side of the cardboard reaches the right detection area and sends the right arrival signal to the controller. The controller analyzes and compares the results of the left arrival signal and the right arrival signal, and then controls the lifting devices on the left and right sides to lift the upper roller assembly. Based on this, the controller adjusts the conveying speed of one or more of the left or right upper pressure rollers and lower belts to adjust the deflection angle of the cardboard.

11. The cardboard deflection adjustment device according to claim 10, characterized in that, It also includes a left front guard and a right front guard, which are respectively arranged on the front side of the cardboard conveying mechanism on the left and right sides. The front sides of the left front guard and the right front guard block and position other cardboard stacked on top of the bottom cardboard. The left position sensor can detect the left arrival signal when the left side of the cardboard moves from the left front guard to the left detection area, and the right position sensor can detect the right arrival signal when the right side of the cardboard moves from the right front guard to the right detection area.

12. Paperboard processing equipment, comprising a paper storage device and a rolling device, characterized in that, It also includes the paperboard deflection adjustment device according to any one of claims 8 to 11, wherein the paper storage device is disposed on the front side of the paperboard deflection adjustment device for providing paperboard to the paperboard deflection adjustment device, and the rolling device is disposed on the rear side of the paperboard deflection adjustment device for receiving the paperboard conveyed by the paperboard deflection adjustment device and rolling crease lines or printing patterns on the paperboard.

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