Hydraulic shaftless paper stand

Abstract

The application relates to a hydraulic shaftless paper frame, which comprises two frame bodies arranged oppositely, two rollers arranged in relative rotation between the two frame bodies, two supporting arms arranged in relative sliding on the rollers, two rotary hydraulic cylinders arranged on one side of the frame body, the rotary hydraulic cylinders being connected with the rollers and used for driving the rollers to rotate, characterized in that the bottom of the roller is provided with a driving piece; the other end of the supporting arm is provided with a supporting roller, the application can drive the supporting arms to approach or move away from each other through the driving piece, the distance between the two supporting arms can be flexibly adjusted, the supporting demand of paper with different widths can be met, the operation mode is simple, the movement control of the supporting arms is accurate, and the supporting arms can accurately reach the predetermined positions, so that accurate support can be provided for the paper.

Description

Technical Field

[0001] This application relates to the field of paper holder technology, and in particular to a hydraulic shaftless paper holder. Background Technology

[0002] In industries such as paper processing and printing, hydraulic shaftless paper holders are responsible for supporting and conveying paper. In actual use, some drive components of existing hydraulic shaftless paper holders adopt traditional mechanical transmission methods, using multiple gears, chains or linkages to move the support arm. This not only increases the manufacturing cost and maintenance difficulty of the equipment, but also makes the adjustment process time-consuming and laborious, affecting production efficiency.

[0003] Most existing support roller structures are fixed. Once installed, their size is difficult to adjust according to actual production needs. Specifically, different sizes of paper have different requirements for the size of the support roller. For wider paper, a longer support roller is needed to ensure stable support of the paper; while for narrower paper, a longer support roller may occupy unnecessary space and increase the running resistance of the equipment. When it is necessary to replace support rollers of different sizes, operators must disassemble the entire support roller assembly, which consumes a lot of time and manpower.

[0004] To address the aforementioned issues, a hydraulic shaftless paper holder is now designed. Utility Model Content

[0005] This application provides a hydraulic shaftless paper holder to solve the problem that most hydraulic shaftless paper holders in the related art are inconvenient and inflexible in adjusting the support arm spacing and support rollers during actual use.

[0006] In a first aspect, a hydraulic shaftless paper holder is provided, comprising:

[0007] Two frames are arranged opposite each other, with two rollers rotatably arranged between the two frames. Two support arms are slidably arranged on the rollers. Two rotary hydraulic cylinders are arranged on one side of the frame. The rotary hydraulic cylinders are connected to the rollers and are used to drive the rollers to rotate. The rollers are characterized in that a driving member is provided at the bottom of the rollers. The driving member is connected to two adjacent support arms respectively and is used to drive the two adjacent support arms to move closer or further apart.

[0008] The other end of the support arm is provided with a support roller.

[0009] In some embodiments, the roller includes a rotating shaft, two mounting plates disposed opposite each other at both ends of the rotating shaft, and a turntable disposed at the other end of the mounting plates, the turntable being rotatably connected to the frame.

[0010] In some embodiments, the rotary hydraulic cylinder is a sector rotor type rotary hydraulic cylinder, and the output shaft of the sector rotor type rotary hydraulic cylinder is connected to the corresponding turntable.

[0011] In some embodiments, a hydraulic pump station is also included for supplying high-pressure hydraulic oil to the rotary hydraulic cylinder.

[0012] In some embodiments, the driving component includes a drive motor mounted on a mounting plate on one side, the output shaft of the drive motor being provided with a double-ended screw, the other end of the double-ended screw being rotatably connected to the mounting plate on the other side, the threads at both ends of the double-ended screw having opposite directions, and two moving blocks being threadedly connected to the double-ended screw;

[0013] A sliding rod is provided between the two mounting plates, and the sliding rod is arranged parallel to the adjacent double-headed screw. The other end of the moving block is slidably engaged with the adjacent sliding rod. A fixing block is provided on the top of the moving block, and the top of the fixing block is connected to the corresponding support arm.

[0014] In some embodiments, the support roller includes a drive motor disposed at the other end of the support arm, a rotating disk is rotatably disposed on the side of the other end of the support arm away from the drive motor, a connecting rod is disposed on the other side of the rotating disk, the other end of the connecting rod is threaded, and a roller shaft is threaded to the other end of the connecting rod.

[0015] The output shaft of the drive motor is connected to the rotating disk.

[0016] This application provides a hydraulic shaftless paper holder. A drive mechanism moves the support arms closer together or further apart, allowing for flexible adjustment of the distance between the two support arms to accommodate paper widths of varying widths. The operation is simple, and the movement of the support arms is precisely controlled, ensuring they accurately reach predetermined positions and provide precise support for the paper. Simultaneously, the rotating design of the support rollers reduces friction with the paper, further guaranteeing smooth paper transport.

[0017] The support roller can be adjusted according to the characteristics of different types of paper. By changing the roller size, it can adapt to the support requirements of different paper sizes, reduce friction between the roller and the paper, and ensure that the paper is transported smoothly and steadily. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A three-dimensional structural illustration provided for an embodiment of this application. Figure 1 ;

[0020] Figure 2 A three-dimensional structural illustration provided for an embodiment of this application. Figure 2 ;

[0021] Figure 3 This is a three-dimensional schematic diagram of the connection structure between the roller and the drive component provided in an embodiment of this application;

[0022] Figure 4 This is a front sectional view provided for an embodiment of this application.

[0023] In the diagram: 1. Frame; 2. Roller; 3. Support arm; 4. Rotary hydraulic cylinder; 5. Drive component; 6. Support roller; 21. Rotating shaft; 22. Mounting plate; 23. Turntable; 51. First motor; 52. Double-ended screw; 53. Moving block; 54. Slide rod; 55. Fixed block; 61. Second motor; 62. Rotating disk; 63. Connecting rod; 64. Roller shaft. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] This application provides a hydraulic shaftless paper holder that solves the problem that most hydraulic shaftless paper holders in the related art are inconvenient and inflexible in adjusting the support arm spacing and support rollers during actual use.

[0026] Please see Figures 1-3 A hydraulic shaftless paper holder includes: two frame bodies 1 arranged opposite to each other; two rollers 2 rotatably arranged between the two frame bodies 1; two support arms 3 slidably arranged on the rollers 2; two rotary hydraulic cylinders 4 arranged on one side of the frame body 1; the rotary hydraulic cylinders 4 are connected to the rollers 2 and used to drive the rollers 2 to rotate; a driving component 5 is arranged at the bottom of the rollers 2; the driving component 5 is connected to two adjacent support arms 3 respectively and used to drive the two adjacent support arms 3 to move closer or further apart; and a support roller 6 is arranged at the other end of the support arm 3.

[0027] The frame 1 provides a stable installation base for the entire equipment. The two rollers 2 are the structure that bears and drives the movement of other components. The rotating hydraulic cylinder 4 drives the rollers 2 to rotate relative to the frame 1, providing power for the paper conveying.

[0028] The drive unit 5 is used to control the movement of two adjacent support arms 3 to move closer or further apart, in order to adapt to the support requirements of papers of different widths.

[0029] The support roller 6 is mainly used to support the paper. During the paper conveying process, its rotation can reduce the friction between the paper and the paper, ensuring that the paper is conveyed smoothly and steadily.

[0030] The drive unit 5 moves the support arms 3 closer to or further apart, allowing for flexible adjustment of the distance between them. This adapts to the support requirements of papers of varying widths, and the operation is simple. The precise control of the support arm 3's movement ensures it accurately reaches the designated position, providing precise support for the paper. Simultaneously, the rotating design of the support roller 6 reduces friction with the paper, further guaranteeing smooth paper transport.

[0031] The support roller 6 can be adjusted according to the characteristics of different types of paper. By changing the size of the roller shaft 64 of the support roller 6, it can adapt to the support requirements of different sizes of paper, reduce the friction between the roller and the paper, and ensure that the paper is transported smoothly and steadily.

[0032] The rotary hydraulic cylinder 4 can provide a stable and uniform driving force, enabling the roller 2 to rotate smoothly. This ensures that the paper is subjected to uniform tension during the conveying process, avoiding problems such as uneven paper tension, wrinkles, or breakage, and improving the quality and stability of paper conveying.

[0033] like Figure 3 As shown in this embodiment, the roller 2 includes a rotating shaft 21, two mounting plates 22 disposed opposite to each other at both ends of the rotating shaft 21, and a turntable 23 disposed at the other end of the mounting plate 22. The turntable 23 is rotatably connected to the frame 1.

[0034] The turntable 23 is rotatably connected to the frame 1, so that the roller 2 can transmit power through the rotating shaft 21 and can also rotate relative to the frame 1 through the turntable 23.

[0035] The output shaft of the rotary hydraulic cylinder 4 rotates, which in turn drives the turntable 23 to rotate. Since the turntable 23 is rotatably connected to the frame 1, the entire roller 2 rotates relative to the frame 1, providing power for the paper conveying.

[0036] like Figure 1 As shown in this embodiment, the rotary hydraulic cylinder 4 is a sector-shaped rotor type rotary hydraulic cylinder, and the output shaft of the sector-shaped rotor type rotary hydraulic cylinder is connected to the corresponding turntable 23.

[0037] The sector rotor type rotary hydraulic cylinder is mainly composed of a cylinder body, a sector rotor, and a piston. Hydraulic oil enters the sealed chamber formed by the cylinder body and the sector rotor, pushing the piston to move. The linear motion of the piston is converted into the rotational motion of the sector rotor. The output shaft of the sector rotor type rotary hydraulic cylinder 4 is connected to the corresponding turntable 23. The output shaft transmits the rotational power of the sector rotor to the turntable 23, thereby driving the turntable 23 to rotate.

[0038] This embodiment also includes a hydraulic pump station, which is used to supply high-pressure hydraulic oil to the rotary hydraulic cylinder 4.

[0039] The hydraulic pump station consists of a hydraulic pump, an oil tank, a filter, a cooler, a pressure control valve, and a flow control valve. The hydraulic pump draws hydraulic oil from the oil tank, pressurizes it, and outputs high-pressure hydraulic oil to provide the required pressure and flow for the rotary hydraulic cylinder 4. The oil tank stores the hydraulic oil, and the filter removes impurities and contaminants. The cooler controls the temperature of the hydraulic oil to prevent performance degradation and system failure due to excessive temperature. The pressure control valve and flow control valve are used to regulate the pressure and flow of the hydraulic system to meet the different working requirements of the rotary hydraulic cylinder 4. This is existing technology and will not be described in detail here.

[0040] When the hydraulic pump station is started, high-pressure hydraulic oil is delivered to the oil inlet of the rotary hydraulic cylinder 4 through the oil pipe. After entering the rotary hydraulic cylinder 4, the hydraulic oil enters the sealed chamber formed by the cylinder body and the sector rotor, pushing the piston to move. The linear motion of the piston is converted into the rotational motion of the sector rotor.

[0041] like Figure 2 and Figure 3 As shown, in one embodiment, the driving component 5 includes a first motor 51 mounted on a mounting plate 22 on one side. The output shaft of the first motor 51 is provided with a double-ended screw 52. The other end of the double-ended screw 52 is rotatably connected to the mounting plate 22 on the other side. The threads at both ends of the double-ended screw 52 are in opposite directions. Two moving blocks 53 are threadedly connected to the double-ended screw 52. A sliding rod 54 is provided between the two mounting plates 22. The sliding rod 54 is parallel to the adjacent double-ended screw 52. The other end of the moving block 53 is slidably engaged with the adjacent sliding rod 54. A fixing block 55 is provided on the top of the moving block 53. The top end of the fixing block 55 is connected to the corresponding support arm 3. The moving block 53 has a threaded hole adapted to the double-ended screw 52 and a sliding hole adapted to the sliding rod 54.

[0042] When the first motor 51 starts, electrical energy is converted into mechanical energy, and the output shaft begins to rotate, which in turn drives the double-ended screw 52 to rotate. Due to the interaction of the threads, the moving block 53 will move along the axial direction of the double-ended screw 52. The threads at both ends of the double-ended screw 52 are in opposite directions, and the two moving blocks 53 will move in opposite directions along the double-ended screw 52. When the first motor 51 rotates clockwise, one moving block 53 moves to the left and the other moves to the right; conversely, when the first motor 51 rotates counterclockwise, the movement directions are opposite.

[0043] During the movement of the movable block 53 along the double-ended screw 52, ​​the slide bar 54 plays a guiding role, ensuring that the movable block 53 can only move in a straight line along the axis of the double-ended screw 52, ​​and will not rotate or deviate.

[0044] When the moving block 53 moves under the action of the double-headed screw 52 and the slide bar 54, it drives the support arm 3 to slide relative to the roller 2 through the fixed block 55. By controlling the forward and reverse rotation and the rotation time of the first motor 51, the two support arms 3 can be precisely controlled to move closer or further apart, thereby adapting to the support requirements of papers of different widths.

[0045] The first motor 51 is adjusted by frequency conversion speed regulation or servo speed regulation, thereby changing the moving speed of the support arm 3.

[0046] The diameter and pitch of the double-ended screw 52 are selected based on the load and moving speed requirements of the support arm 3 and the overall size of the equipment. This is existing technology and will not be elaborated here.

[0047] like Figure 1 and Figure 4 As shown, the support roller 6 includes a second motor 61 disposed at the other end of the support arm 3. A rotating disk 62 is rotatably disposed on the other side of the support arm 3 away from the second motor 61. A connecting rod 63 is disposed on the other side of the rotating disk 62. The other end of the connecting rod 63 is threaded and threaded to a roller shaft 64. The output shaft of the second motor 61 is connected to the rotating disk 62.

[0048] When the second motor 61 starts, its output shaft begins to rotate. Since the output shaft of the second motor 61 is directly connected to the rotating disk 62, the rotating disk 62 will rotate synchronously with the rotation of the output shaft of the second motor 61. The connecting rod 63 on the other side of the rotating disk 62 will also rotate together. The connecting rod 63 is connected to the roller 64, which enables the roller 64 to rotate, thereby providing power support for operations such as paper feeding.

[0049] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0050] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. The above descriptions are merely specific embodiments of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A hydraulic shaftless paper holder, comprising: Two frames (1) are arranged opposite to each other, and two rollers (2) are rotatably arranged between the two frames (1). Two support arms (3) are slidably arranged on the rollers (2). Two rotary hydraulic cylinders (4) are arranged on one side of the frame (1). The rotary hydraulic cylinders (4) are connected to the rollers (2) and are used to drive the rollers (2) to rotate. The rollers (2) are characterized in that a driving member (5) is arranged at the bottom of the rollers (2). The driving member (5) is connected to two adjacent support arms (3) respectively and is used to drive the two adjacent support arms (3) to move closer or further away from each other. The other end of the support arm (3) is provided with a support roller (6).

2. The hydraulic shaftless paper holder as described in claim 1, characterized in that: The roller (2) includes a rotating shaft (21), two mounting plates (22) disposed opposite each other at both ends of the rotating shaft (21), and a turntable (23) disposed at the other end of the mounting plate (22), the turntable (23) being rotatably connected to the frame (1).

3. A hydraulic shaftless paper holder as described in claim 2, characterized in that: The rotary hydraulic cylinder (4) is a fan-shaped rotor type rotary hydraulic cylinder, and the output shaft of the fan-shaped rotor type rotary hydraulic cylinder is connected to the corresponding turntable (23).

4. A hydraulic shaftless paper holder as described in claim 1, characterized in that: It also includes a hydraulic pump station for supplying high-pressure hydraulic oil to the rotary hydraulic cylinder (4).

5. A hydraulic shaftless paper holder as described in claim 2, characterized in that: The driving component (5) includes a first motor (51) mounted on a mounting plate (22) on one side. The output shaft of the first motor (51) is provided with a double-ended screw (52). The other end of the double-ended screw (52) is rotatably connected to the mounting plate (22) on the other side. The threads at both ends of the double-ended screw (52) are opposite in direction. Two moving blocks (53) are threadedly connected to the double-ended screw (52). A slide bar (54) is provided between the two mounting plates (22). The slide bar (54) is arranged parallel to the adjacent double-headed screw (52). The other end of the moving block (53) is slidably engaged with the adjacent slide bar (54). A fixing block (55) is provided on the top of the moving block (53). The top of the fixing block (55) is connected to the corresponding support arm (3).

6. A hydraulic shaftless paper holder as described in claim 1, characterized in that: The support roller (6) includes a second motor (61) disposed at the other end of the support arm (3). A rotating disk (62) is rotatably disposed on the other side of the support arm (3) away from the second motor (61). A connecting rod (63) is disposed on the other side of the rotating disk (62). A thread is disposed at the other end of the connecting rod (63). A roller shaft (64) is threaded to the other end of the connecting rod (63). The output shaft of the second motor (61) is connected to the rotating disk (62).

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