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

Abstract

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] The present invention relates to the technical field related to cardboard processing, and in particular to a cardboard conveying mechanism, a cardboard deflection adjustment device and cardboard processing equipment. Background Art

[0002] With the continuous improvement of automation and intelligence, cardboard processing equipment is also constantly improving. In order to quickly transfer cardboard from one process to another, people usually set up conveying devices between different processing processes. Common conveying devices include rollers or conveyor belts. However, some processing processes have requirements for the placement direction of cardboard, such as cutting process, creasing process and printing process. These processes require that the cardboard should be placed in the specified direction and angle when entering the processing position. If the position deviation of the cardboard is too large, it is necessary not only to increase the edge material reserve when cutting the cardboard, but also to cause position offset problems during printing or processing, resulting in product scrapping, which will increase manufacturing costs. One way to solve this problem is to add positioning tooling to the processing position of the process to achieve cardboard positioning, but this requires stopping the conveying device or pausing the cardboard to move and adding personnel to make adjustments, which not only increases the labor intensity of the personnel, but also requires the cardboard to be transported intermittently, which reduces the processing efficiency of the cardboard.

[0003] In order to improve the overall processing efficiency of the cardboard processing equipment, people have thought of improving the conveying device connecting different processing steps so that the position and angle of the cardboard can be adjusted during the conveying process. For example, the Chinese invention patent with publication number CN208361452U separates the leading edge paper feeding skew adjustment device, which includes a conveying module for storing and conveying multiple cardboards, a power module for providing the necessary power for the conveying module, a paper feeding module for 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 that the cardboard in the paper feeding area is skewed, and transmits an abnormal signal to the control module. The control module calculates the skew distance and speed difference value of the two ends of the cardboard, and transmits a correction value data to the power module to correct the position of the cardboard in the paper feeding area. However, it is not difficult to see from the attached drawings that the adjustment device only takes as an example a short conveying path from the paper storage mechanism to the paper feeding module, and solves the problem of cardboard deviation caused by friction between cardboards. However, in actual cardboard conveying applications, the straightened cardboard is easily loosened from the bottom conveying module during the movement due to the lack of an upper clamping device on the conveying path between processes, resulting in the cardboard being deviated due to local uneven force. Therefore, how to reduce the deviation of the cardboard during the conveying process and adjust the position of the deviated cardboard has become a problem that needs to be solved. Summary of the invention

[0004] In order to overcome at least one of the problems existing in the prior art in reducing the deviation during conveying, adjusting the position of the deviated cardboard, and new problems arising from solving these two problems, the present invention proposes a cardboard conveying mechanism, including a base, a controller; an upper pressing wheel, an upper wheel group, a lower wheel group, and an upper lifting device, wherein the upper pressing wheel is rotatably mounted on the base through an upper wheel shaft, the upper wheel shaft is connected to the upper pressing wheel rotation driver by transmission, the upper pressing wheel rotation driver signal is connected to the controller, and the controller is used to control the rotation speed of the upper pressing wheel through the upper pressing wheel rotation driver; the upper wheel group is used to install an upper belt, the upper wheel group is connected to the upper wheel group driver by transmission, the upper wheel group driver signal is connected to the controller, and the controller is used to control the rotation speed of the upper wheel group through the upper wheel group driver and thus control the moving speed of the upper belt; the upper wheel group is movably arranged on the base and located in front of the upper pressing wheel, and when the upper wheel group is installed with the upper belt, the upper belt forms a section along The upper chord section is arranged in the advancing direction of the cardboard; the upper lifting device is used to drive the upper wheel group to move up and down relative to the base, the upper lifting device signal is connected to the controller, and the controller is used to control the lifting action of the upper lifting device; the lower wheel group is used to install the lower belt, the lower wheel group is connected to the lower wheel group driver by transmission, the lower wheel group driver signal is connected to the controller, and the controller is used to control the rotation speed of the lower wheel group through the lower wheel group driver and thus control the moving speed of the lower belt; the lower wheel group is arranged on the base, when the lower wheel group is installed with the lower belt, the lower belt forms a lower chord section arranged along the advancing direction of the cardboard, the upper pressing wheel and the upper chord section are located above the lower chord section, and a side portion of the cardboard is stably clamped and transmitted between the upper pressing wheel and the lower chord section, and the position of the upper chord section can be selectively controlled by using the lifting action of the upper lifting device, so that a side portion of the cardboard is selectively clamped and transmitted between the upper chord section and the lower chord section.

[0005] Among them, the base is the main basic component of the cardboard conveying mechanism, which is used to connect the frame body of the processing equipment and to connect and support movable components such as the upper pressing wheel, upper wheel group, lower wheel group, and upper lifting device.

[0006] Wherein, the upper pressing wheel is a rotatable conveying member, and the upper pressing wheel can be pressed on the upper surface of one side edge of the cardboard with a certain pressing force, and the outer edge of the upper pressing wheel 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 the deflection angle during the pressing and conveying process of the upper pressing wheel. The upper pressing wheel is driven by the upper pressing wheel rotation driver, and the controller can control the rotation speed of the upper pressing wheel by controlling the upper pressing wheel rotation driver. In addition, the upper pressing wheel is connected to the base through the upper wheel shaft, so the upper wheel shaft and the upper pressing wheel are not affected by the lifting action of the upper lifting device, so when the upper lifting device lifts the upper wheel group, the upper pressing wheel still maintains contact with the cardboard.

[0007] Among them, the upper wheel shaft is a rotating shaft component connected to the base, which is connected to the upper pressure wheel rotation driver to serve as a transmission shaft to drive the upper pressure wheel, and can also serve as the central axis for the rotation of the upper vertical plate below, so that when the upper wheel group and the upper belt are lifted, the upper wheel shaft is not lifted.

[0008] Wherein, the upper wheel group is a wheel group composed of at least two pulleys for installing the upper belt, which can move up and down relative to the base. When the upper belt is installed on the upper wheel group, the upper belt is stretched and stretched, and a stretching belt is formed on the side close to the cardboard, and this belt section is the upper chord section. The upper chord section and the lower chord section below can clamp the cardboard in the up and down directions, and because the upper belt and the lower belt can both rotate, the cardboard is clamped by the two belts and transported from front to back; because the upper belt and the lower belt are both flat belt structures, they form surface contact with the cardboard, so that the cardboard is not easy to deflect during the transportation process. In order to drive the upper belt, at least one pulley in the upper wheel group is connected to the upper wheel group driver, so that the controller can control the rotation speed of the upper wheel group and the upper belt through the upper wheel group driver. The upper pressure wheel rotation driver and the upper wheel group driver can be separately and independently set, or they can be combined into one; when they are combined into one and use one driver, the upper pressure wheel and the upper wheel group are connected by gears or belts, and the rotation speeds of the upper belt and the upper pressure wheel can be more easily controlled synchronously under the drive of one driver.

[0009] The upper lifting device is a mechanism for lifting the upper wheel group and the upper belt installed on the upper wheel group, which is generally a motor or a cylinder. There are two commonly used lifting methods. The first is to use the upper lifting device to lift the upper wheel group and the upper belt installed on the upper wheel group horizontally upward, so that the upper chord section of the upper belt can be translated upward and away from the paperboard; the second is to make the upper wheel group and the upper belt installed on the upper wheel group rotatably connected to the base, and the upper lifting device can lift the upper wheel group and the upper belt in a rotating manner, so that the upper chord section of the upper belt is also rotated and tilted and arranged above the paperboard.

[0010] The lower wheel assembly is a wheel assembly composed of at least two pulleys for mounting the lower belt. When the lower belt is mounted on the lower wheel assembly, the lower belt is stretched and stretched, and the stretched belt forms the lower chord section on the side close to the cardboard when rotating. In order to drive the lower belt, at least one pulley in the lower wheel assembly is connected to the lower wheel assembly driver, so that the rotation speed of the lower wheel assembly and the lower belt mounted thereon can be achieved by controlling the lower wheel assembly driver.

[0011] Among them, the upper pressing wheel and the upper chord section are located above the lower chord section, and the upper wheel group is located in front of the upper pressing wheel, so that the cardboard is first clamped by the upper chord section and the lower chord section during the conveying process from front to back, and then clamped by the upper pressing wheel and the lower chord section. If the deflection angle of the cardboard needs to be adjusted, it is generally preferred to lift the upper wheel group and the upper belt, and at this time the cardboard is clamped and conveyed by the upper pressing wheel and the lower chord section.

[0012] The upper lifting device is used to drive the upper wheel group to move up and down relative to the base, and the upper belt will also be driven together. The lifting action of the upper lifting device selects and controls the position of the upper string segment. After the movement, the upper belt has the following two states. In the first state, the upper string segment is completely separated from the upper surface of the cardboard. In the second state, by controlling the rotation angle, the lower end of the upper string segment is lightly pressed on the upper surface of the cardboard to form a nearly linear crimping surface. The advantage of this setting is that it can add a force point on the cardboard, so that it can adjust the cardboard with a heavier weight or a tighter clamp together with the upper pressing wheel.

[0013] Compared with the prior art, the beneficial technical effects of the cardboard conveying mechanism of the present invention are: first, the cardboard conveying mechanism has two clamping and conveying structures, one is the upper and lower clamping structure formed by the upper chord section and the lower chord section located on the front side, and the other is the clamping structure formed by the upper pressure wheel and the lower chord section located on the rear side, which can well ensure the stability of the cardboard during conveying; second, the upper chord section and the lower chord section are both flat belt-shaped structures, and surface contact is formed between the cardboard and the cardboard, so that the cardboard is not easy to deflect during the conveying process, which greatly reduces the possibility of deflection during the conveying process of the cardboard; third, by providing the upper lifting device, the position of the upper chord section can be selectively controlled through the lifting action of the upper lifting device, which can reduce the clamping area of ​​the upper chord section on the cardboard or allow the upper chord section to be completely separated from the cardboard, which provides conditions for adjusting the deflection angle of the cardboard later.

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

[0015] Among them, the cardboard deflection adjustment device can not only convey the cardboard from front to back, but also adjust the deflection angle of the cardboard. The cardboard conveying and adjustment process is as follows: 1) The left and right sides of the cardboard are respectively clamped and conveyed forward by the upper and lower chord sections of the two sets of the cardboard conveying mechanism arranged in left and right mirror images; 2) After the left and right front ends of the cardboard move out of the upper chord section, they can be clamped by the upper pressure wheel and the lower chord section. At this time, the left and right sides of the cardboard are clamped and conveyed by the upper pressure wheel, the lower belt and the upper belt at the same time. At this time, the controller controls the output speed of the upper pressure wheel rotation driver, the upper wheel group driver and the lower wheel group driver to enable the cardboard to be stably conveyed from front to back; 3) When the deflection angle of the cardboard needs to be adjusted, 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 wheels 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: first, by setting up the cardboard deflection adjustment devices arranged on the left and right, a stable conveying force can be provided for 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 conveyance; second, it is difficult to adjust the position and angle of the cardboard when the cardboard is clamped by the belts on the upper and lower sides. In order to solve this problem, the inventor artificially added an upper lifting device to the conveying device to lift the upper belt pressing on the cardboard, so that the upper surfaces of the left and right sides of the cardboard no longer have a surface contact connection with the upper belt, and then the position and angle of the cardboard can be adjusted more easily by adjusting the rotation speed of the upper pressure wheel and the lower belt.

[0017] Since the present invention has the above characteristics and advantages, it can be applied to a cardboard conveying mechanism, a cardboard deflection adjustment device and a cardboard processing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the structure of the cardboard processing equipment in a front view; Figure 2 is a schematic diagram of the axial structure of the cardboard deflection adjustment device; Figure 3 The left side is a schematic diagram of the structure of the cardboard conveying mechanism in the axial direction; Figure 4 It is a schematic diagram of the exploded structure of the cardboard conveying mechanism on the left; Figure 5 The left side is a schematic diagram of the front view of the cardboard conveying mechanism, showing the clamping and conveying state; Figure 6 It is a schematic diagram of the front view structure of the cardboard conveying mechanism on the left, showing the lifting state. DETAILED DESCRIPTION

[0019] The structure of the paperboard conveying mechanism 2, the paperboard deflection adjustment device and the paperboard processing equipment applying the technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0020] Except for those explicitly stated to be equivalent or alternative implementation schemes, the various implementation details disclosed below can be selectively applied or combined in one embodiment even if they are not directly related or synergistic in terms of functions.

[0021] like Figure 1 As shown, a cardboard processing device includes a paper storage device 11 and a rolling device 12, and also includes a cardboard deflection adjustment device 13. The paper storage device 11 is arranged at the front side of the cardboard deflection adjustment device 13, and is used to provide cardboard for the cardboard deflection adjustment device 13. The rolling device 12 is arranged at the rear side of the cardboard deflection adjustment device 13, and is used to receive the cardboard delivered by the cardboard deflection adjustment device 13 and roll the indentation line or print pattern on the cardboard.

[0022] The cardboard deflection adjustment device 13 includes two sets of cardboard conveying mechanisms 2, which are arranged in mirror images on the left and right sides, and the bases 21 of the two sets of cardboard conveying mechanisms 2 are detachably fixedly connected together through a connecting mechanism. For the convenience of explanation, the cardboard conveying mechanism 2 arranged on the left side is defined as the left cardboard conveying mechanism, and the cardboard conveying mechanism 2 arranged on the right side is defined as the right cardboard conveying mechanism. In order to adapt to cardboards of different specifications, the left cardboard conveying mechanism and the right cardboard conveying mechanism are two components that are relatively spaced and movably connected to the frame 14, and the two components can be adjusted according to the width of the cardboard.

[0023] Since the structures of the two sets of cardboard conveying mechanisms 2 are basically the same, the cardboard conveying mechanism 2 on the left side will be described in detail below.

[0024] The cardboard conveying mechanism 2 includes a base 21 and a controller; it also includes an upper pressing wheel 4, an upper wheel group 71, a lower wheel group 32, and an upper lifting device 6. The upper pressing wheel 4 is rotatably mounted on the base 21 through an upper wheel shaft 41, and the upper wheel shaft 41 is connected to an upper pressing wheel rotation driver 72 by transmission. The upper pressing wheel rotation driver 72 is connected to the controller by signal. The controller is used to control the rotation speed of the upper pressing wheel 4 through the upper pressing wheel rotation driver 72; the upper wheel group 71 is used to install an upper belt 5, and the upper wheel group 71 is used to transmit The upper wheel group 71 is dynamically connected to the upper wheel group driver, and the upper wheel group driver signal is connected to the controller. The controller is used to control the rotation speed of the upper wheel group 71 through the upper wheel group driver and thus control the moving speed of the upper belt 5; the upper wheel group 71 can be arranged on the base 21 and is located in front of the upper pressing wheel 4. When the upper wheel group 71 is installed with the upper belt 5, the upper belt 5 forms an upper chord section 51 arranged along the forward direction of the cardboard; the upper lifting device 6 is used to drive the upper wheel group 71 to move up and down relative to the base 21, and the upper lifting device 6 signal is connected to the controller, and the controller is used to control the lifting action of the upper lifting device 6; the lower wheel group 32 is used to install the lower belt 3, and the lower wheel group 32 is transmission-connected to the lower wheel group driver 73, and the lower wheel group driver 73 signal is connected to the controller, and the controller is used to control the rotation speed of the lower wheel group 32 through the lower wheel group driver 73 and thus control the moving speed of the lower belt 3; the lower wheel group 32 is arranged on the base 21, when the After the lower belt 3 is installed on the lower wheel group 32, the lower belt 3 forms a lower chord section 31 arranged along the forward direction of the cardboard, and the upper pressing wheel 4 and the upper chord section 51 are located above the lower chord section 31. The upper pressing wheel 4 and the lower chord section 31 form a stable clamping and transmission of a side edge of the cardboard, and the lifting action of the upper lifting device 6 can be used to selectively control the position of the upper chord section 51, so that the upper chord section 51 and the lower chord section 31 can selectively clamp and transmit a side edge of the cardboard.

[0025] The base 21 is the main basic component of the cardboard conveying mechanism 2, which is used to connect to the frame 14 main body of the processing equipment, and is also used to connect and support movable components such as the upper pressing wheel 4, the upper wheel group 71, the lower wheel group 32, and the upper lifting device 6.

[0026] The upper pressing wheel 4 and the upper chord section 51 are located above the lower chord section 31, and the upper wheel group 71 is located in front of the upper pressing wheel 4, so that the cardboard is first clamped by the upper chord section 51 and the lower chord section 31 during the conveying process from front to back, and then clamped by the upper pressing wheel 4 and the lower chord section 31. Among them, the upper wheel group 71 is a wheel group composed of at least two pulleys for installing the upper belt 5. When the upper belt 5 is installed on the upper wheel group 71, the upper belt 5 is stretched and stretched to form a section of the belt that is stretched and straightened on the side close to the cardboard. This section of the belt is the upper chord section 51. Similarly, the lower wheel group 32 is also a wheel group composed of at least two pulleys. When the lower belt 3 is installed on the lower wheel group 32, the stretched lower belt 3 forms the lower chord section 31 on the side close to the cardboard when rotating. Furthermore, in order to drive the upper belt 5 and the lower belt 3, at least one pulley in the upper wheel group 71 is connected to the upper wheel group driver, and at least one pulley in the lower wheel group 32 is connected to the lower wheel group driver 73. By controlling the upper wheel group driver and the lower wheel group driver 73, the rotation speed of the upper belt 5 and the lower belt 3 can be achieved. The upper chord section 51 of the upper belt 5 is arranged above the lower chord section 31 of the lower belt 3 and is arranged roughly in parallel. The length of the lower chord section 31 of the lower belt 3 is greater than the length of the upper chord section 51 of the upper belt 5, and a conveying channel for allowing the cardboard to pass through is formed between the two. After entering the conveying channel, the cardboard can be clamped by the lower chord section 31 of the lower belt 3 and the upper chord section 51 of the upper belt 5 to form a surface contact connection. By controlling the linear speeds of the lower belt 3 and the upper belt 5 to be consistent, the cardboard can be moved forward at a stable speed. Moreover, since the upper and lower surfaces of the left side of the cardboard are clamped, the upper belt 5 and the lower belt 3 are both flat belt structures, and surface contact is formed between the belt and the cardboard, so that the cardboard is not easy to deflect during the conveying process.

[0027] The upper pressing wheel 4 is different from the upper belt 5. When the cardboard passes through the upper pressing wheel 4, the outer edge of the upper pressing wheel 4 forms a nearly 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 pressing wheel rotation driver 72, and the other end is connected to the upper pressing wheel 4. The upper wheel shaft 41 serves as a transmission shaft to drive the upper pressing wheel 4. Since the upper wheel shaft 41 is not affected by the lifting action of the upper lifting device 6, when the upper lifting device 6 lifts the upper wheel group 71 and the upper belt 5, the upper pressing wheel 4 still maintains contact with the cardboard.

[0028] The upper pressing wheel rotation driver 72 and the upper wheel assembly driver can be independently set or combined into one. In this embodiment, the upper pressing wheel rotation driver 72 and the upper wheel assembly driver are combined into one, and only the upper pressing wheel rotation driver 72 is used, and the upper pressing wheel 4 is connected to the upper wheel assembly 71 through a belt transmission. In this way, the rotation speeds of the upper belt 5 and the upper pressing wheel 4 can be more easily controlled synchronously under the drive of one driver.

[0029] The upper lifting device 6 is a mechanism for lifting the upper wheel set 71 and the upper belt 5 installed on the upper wheel set 71. A motor is used in this embodiment. There are two commonly used lifting methods. The first one is the solution of this embodiment, in which the upper wheel set 71 and the upper belt 5 installed on the upper wheel set 71 are rotatably connected to the base 21. The upper lifting device 6 can lift the upper wheel set 71 and the upper belt 5 in a rotating manner, so that the upper chord section 51 of the upper belt 5 is also rotated and tilted and arranged above the cardboard. The second lifting method is to lift the upper wheel set 71 and the upper belt 5 installed on the upper wheel set 71 horizontally upward through the upper lifting device 6, so that the upper chord section 51 of the upper belt 5 can be translated upward and away from the cardboard.

[0030] The upper lifting device 6 is used to drive the upper wheel group 71 to move up and down relative to the base 21, and the upper belt 5 installed on the upper wheel group 71 will also be driven together. For this reason, the lifting action of the upper lifting device 6 selectively controls the position of the upper string segment 51. The upper belt 5 after movement has the following two states. In the first state, whether it is horizontal lifting or rotational lifting, the upper string segment 51 is completely separated from the upper surface of the cardboard. In the second state, by controlling the rotation angle, the lower end of the upper string segment 51 is lightly pressed on the upper surface of the cardboard to form a nearly linear crimping surface. The advantage of this setting is that it can add a force application point on the cardboard, so that it can adjust the heavier or tightly clamped cardboard together with the upper pressing wheel 4. By setting the upper lifting device 6, the position of the upper segment 51 can be selectively controlled through the lifting action of the upper lifting device 6, so that the clamping area of ​​the upper segment 51 on the cardboard can be reduced or the upper segment 51 can be completely separated from the cardboard, which provides conditions for adjusting the deflection angle of the cardboard later.

[0031] In order to better drive the upper wheel group 71 to move, a further technical solution may also include an upper vertical plate 7, which can be movably connected to the base 21 up and down, and the upper wheel group 71 is installed on the upper vertical plate 7. The upper lifting device 6 can move the upper wheel group 71 by driving the upper vertical plate 7 to move up and down.

[0032] Furthermore, the upper vertical plate 7 is also provided with an upper vertical plate hole, and the upper wheel axle 41 can pass through the upper vertical plate hole and be connected to the base 21. When the upper lifting device 6 performs a lifting action, it can drive the upper vertical plate 7 and the upper wheel group 71 connected to the upper vertical plate 7 to rotate around the upper wheel axle 41.

[0033] The upper vertical plate 7 is provided with a lifting hole 74, and the upper lifting device 6 includes an upper lifting motor 61 and an eccentric shaft 62. The upper lifting motor 61 is connected to the base 21, and 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 61 can drive the upper vertical plate 7 to rotate around the upper wheel shaft 41 through the eccentric shaft 62. In other equivalent embodiments, the upper lifting device 6 includes a left lifting cylinder, and the upper vertical plate 7 is lifted by the left lifting cylinder.

[0034] In order to improve the supporting effect of the lower belt 3 on the cardboard, it also includes several support wheels 82 and support belts 83 installed on the support wheels 82. The support wheels 82 and the support belt 83 are arranged on the inner side of the lower belt 3 to support the lower chord section 31 of the lower belt 3. It also includes a negative pressure conveying bellows 81. The lower wheel group 32, the support wheels 82 and the support belt 83 are arranged in the negative pressure conveying bellows 81. The upper surface of the lower chord section 31 of the lower belt 3 installed on the lower wheel group 32 is higher than the upper surface of the negative pressure conveying bellows 81. The belt body of the lower belt 3 is provided with suction holes 33 distributed at intervals. By providing the suction holes 33 on the lower belt 3, the passing cardboard can be adsorbed on the lower chord section 31 of the lower belt 3, which is conducive to reducing the deviation of the cardboard and reducing the paper scraps and dust on the conveyor belt.

[0035] Since the thickness of the cardboard is diverse, in order to adapt to cardboards of different thicknesses, the cardboard conveying mechanism 2 also includes a lower upright plate 8, which is movably connected to the base 21, and the lower wheel group 32 is installed on the lower upright plate 8; 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, and the two adjusting cams 92 are respectively pressed on the lower surfaces of the two lower upright plates 8 arranged on the left and right. The signal of the lower adjusting motor 91 is connected to the controller, and the controller can control the lower adjusting motor 91 to drive the two adjusting cams 92 to rotate so as to adjust the height of the lower upright plate 8, so that the lower wheel group 32 and the lower chord section 31 of the lower belt 3 installed thereon can selectively move away from or approach the upper pressing wheel 4 and the upper chord section 51.

[0036] Furthermore, the cardboard conveying mechanism 2 also includes a left position sensor 15 and a right position sensor 15' which are connected to the controller by signal. The left position sensor 15 is arranged at the rear side of the upper pressing wheel 4 on the left side, and a left detection area is set below the left position sensor 15. The right position sensor 15' is arranged at the rear side of the upper pressing wheel 4 on the right side, and a right detection area is set 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, and 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 wheel group 71, and on this basis adjusts the conveying speed of one or more of the upper pressing wheel 4 and the lower belt 3 on the left or right side to adjust the deflection angle of the cardboard.

[0037] Furthermore, it also includes a left front block 16 and a right front block 16', which are respectively arranged on the front sides of the cardboard conveying mechanism 2 on the left and right sides, and the front sides of the left front block 16 and the right front block 16' block and position the other cardboards stacked on the bottom cardboard, and the left position sensor 15 can detect the left arrival signal when the left side of the cardboard moves from the left front block 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 block 16' to the right detection area.

[0038] The specific conveying adjustment process is as follows: 1) The cardboard starts from the left front stop 16 and the right front stop 16', and after moving a certain distance, the left and right sides of the cardboard are clamped by the upper chord segments 51 and the lower chord segments 31 of the two sets of the cardboard conveying mechanisms 2 arranged on the left and right and conveyed forward; 2) After the front ends of the left and right sides of the cardboard move out of the upper chord section 51, they can be clamped by the upper pressing wheel 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 pressing wheel 4, the lower belt 3 and the upper belt 5. At this time, the controller controls the output speeds of the upper pressing wheel rotation driver 72, the upper wheel group driver and the lower wheel group driver 73 to enable the cardboard to be stably conveyed from front to back; 3) The left and right front ends of the cardboard move out of the upper pressing wheel 4 and enter the left detection area and the right detection area. When the controller detects that the placement position of the cardboard is incorrect, the deflection angle of the cardboard needs to be adjusted. The controller first controls the upper lifting device 6 to lift the upper belt 5, and then adjusts the rotation speed of one or more of the upper pressing wheels 4 and the lower belt 3 on the left and right sides to adjust the deflection angle of the cardboard.

[0039] Compared with the prior art, the beneficial technical effects of the cardboard deflection adjustment device 13 of the present invention are: first, by setting the cardboard deflection adjustment device 13 arranged on the left and right, a stable conveying force can be provided for 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 the cardboard is clamped by the belts on the upper and lower sides. In order to solve this problem, the inventor artificially added an upper lifting device 6 to the conveying device to lift the upper belt 5 pressing on the cardboard, so that the upper surfaces of the left and right sides of the cardboard do not have the surface contact connection of the upper belt 5, and then by adjusting the rotation speed of the upper pressing wheel 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 pressing wheel, an upper wheel group, a lower wheel group, and an upper lifting device, wherein the upper pressing wheel is rotatably mounted on the base through an upper wheel shaft, the upper wheel shaft is transmission-connected to an upper pressing wheel rotation driver, and the upper pressing wheel rotation driver signal is connected to the controller, and the controller is used to control the rotation speed of the upper pressing wheel through the upper pressing wheel rotation driver; The upper wheel group is used to install the upper belt, the upper wheel group is connected to the upper wheel group driver, the upper wheel group driver signal is connected to the controller, the controller is used to control the rotation speed of the upper wheel group through the upper wheel group driver and thus control the moving speed of the upper belt; the upper wheel group is arranged on the base and is located in front of the upper pressing wheel so as to be movable up and down. When the upper wheel group is installed with the upper belt, the upper belt forms an upper chord section arranged along the forward direction of the paperboard; the upper lifting device is used to drive the upper wheel group to move up and down relative to the base, the upper lifting device signal is 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 connected to the lower wheel assembly driver through transmission, the lower wheel assembly driver signal is connected to the controller, the controller is used to control the rotation speed of the lower wheel assembly through the lower wheel assembly driver and thus control the moving speed of the lower belt; the lower wheel assembly is arranged on the base, when the lower wheel assembly is installed with the lower belt, the lower belt forms a lower chord section arranged along the forward direction of the cardboard, the upper pressure wheel and the upper chord section are located above the lower chord section, a side edge of the cardboard is stably clamped and transmitted between the upper pressure wheel and the lower chord section, and the lifting action of the upper lifting device can be used to selectively control the position of the upper chord section, so that a side edge of the cardboard is selectively clamped and transmitted between the upper chord section and the lower chord section.

2. The cardboard conveying mechanism according to claim 1, characterized in that: It also includes an upper vertical plate, which can be movably connected to the base up and down, and the upper wheel group is installed on the upper vertical plate. The upper lifting device can move with the upper wheel group by driving the upper vertical plate to move up and down.

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

4. The cardboard conveying mechanism according to claim 3, characterized in that: The upper vertical plate is provided with a lifting hole, and 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 vertical 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 pressing wheel rotation driver and the upper wheel assembly driver can be separately and independently arranged, or they can be combined into one.

6. The cardboard conveying mechanism according to claim 1, characterized in that: It also includes several supporting wheels and supporting belts installed on the supporting wheels. The supporting wheels and the supporting belts are arranged on the inner side of the lower belt to support the lower chord section of the lower belt.

7. The cardboard conveying mechanism according to claim 6, characterized in that: It also includes a negative pressure conveying bellows, in which the lower wheel group, supporting wheel and supporting belt are arranged, the upper surface of the lower chord section of the lower belt installed on the lower wheel group is higher than the upper surface of the negative pressure conveying bellows, and one circle of the belt body of the lower belt is provided with suction holes distributed at intervals.

8. Cardboard deflection adjustment device, characterized in that: It comprises two sets of cardboard conveying mechanisms as described in any one of claims 1 to 7, the two sets of cardboard conveying mechanisms are arranged in left and right mirror images, and the bases of the two sets of cardboard conveying mechanisms are detachably fixedly connected together through 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 group is installed 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 are respectively pressed on the lower surfaces of the two lower upright plates arranged on the left and right, the lower adjusting motor signal is connected to the controller, and the controller can control the lower adjusting motor to drive the two adjusting cams to rotate so as to adjust the height of the lower upright plate, so that the lower wheel group and the lower chord section of the lower belt installed thereon can selectively move away from or approach the upper pressure wheel and the upper chord section.

10. The paperboard deflection adjustment device according to claim 8, characterized in that: The device also includes a left position sensor and a right position sensor connected to the controller by signals. The left position sensor is arranged at the rear side of the upper pressing wheel on the left side, and a left detection area is arranged below the left position sensor. The right position sensor is arranged at the rear side of the upper pressing wheel on the right side, and a right detection area is arranged below the right position sensor. The left position sensor is used to detect a left arrival signal when the left front end of the paperboard reaches the left detection area and can send the left arrival signal to the controller. The right position sensor is used to detect a right arrival signal when the right side of the paperboard 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 wheel group, and on this basis adjusts the conveying speed of one or more of the upper pressing wheel and the lower belt on the left or right side to adjust the deflection angle of the paperboard.

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

12. Cardboard processing equipment, including a paper storage device and a rolling device, characterized in that: It also includes the cardboard deflection adjustment device according to any one of claims 8 to 11, wherein the paper storage device is arranged at the front side of the cardboard deflection adjustment device, and is used to provide cardboard for the cardboard deflection adjustment device; the rolling device is arranged at the rear side of the cardboard deflection adjustment device, and is used to receive the cardboard delivered by the cardboard deflection adjustment device and roll the indentation line or printed pattern on the cardboard.

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