Control structure for controlling length of finished paper based on rewinding machine

Abstract

The utility model relates to the technical field of finished paper length control of a rewinding machine, in particular to a control structure for controlling the length of finished paper based on the rewinding machine, which comprises a large plate, a mounting seat is fixedly connected to the side wall of one side of the large plate, and a first rotating shaft and a second rotating shaft are rotatably connected to the side wall of one side, far away from the large plate, of the mounting seat; the first rotating shaft and the second rotating shaft are located at the same height and are symmetrically distributed about the central axis of the mounting base, and first gears are fixedly connected to the outer wall of the first rotating shaft and the outer wall of the second rotating shaft. According to the utility model, a mathematical model formula is improved, the length of the roll paper is calculated by utilizing the mathematical model formula L = V * T (L is the length of the finished paper roll, V is the running speed of the bottom roller, and T is the running time of the bottom roller), and the 32-bit vector type frequency converter is matched with the programmable controller, so that more complicated control algorithms and more accurate control can be processed; the length of the roll paper can be more accurate, the utilization rate of the roll paper is greatly increased, and the production yield is increased.

Description

Technical Field

[0001] The utility model relates to a rewinder controlling the length of finished paper, in particular to a control structure based on the rewinder controlling the length of finished paper, and belongs to the technical field of rewinders. Background Art

[0002] A rewinder is a machine used to rewind materials such as roll paper or film into a new roll. Rewinders usually consist of unwinding, rewinding, cutting, tension control and other parts, which can achieve high-speed and automatic rewinding operations. Rewinders are widely used in papermaking, printing, packaging and other industries, and are one of the indispensable equipment in the production process.

[0003] The rewinder is the last production line of the paper machine production system. The rewinder further processes and cuts the paper rolls unwound by the paper machine into small paper rolls as semi-finished products and supplies them to downstream customers. When the semi-finished products cut by the rewinder are supplied to downstream customers, they need to be cut and processed completely according to the needs of downstream customers. Generally, downstream customers require that the weight of the paper rolls after cutting is calculated, and at the same time, they also require that the technical requirements of the downstream customers' processing equipment be met to ensure the quality of the finished packaging products. It is often required that the rewinding and cutting of paper rolls must meet the required length cutting. The existing rewinder generally uses the mathematical method: Π*(D / 2)2=L*δ(where Π is a constant, D is the roll diameter, δ is the current paper thickness, and L is the paper roll length). The length of the rewound paper is calculated. The roll diameter is a value obtained by changing the resistance of the potentiometer due to the up and down movement of the paper pressing roller. Because the initial position of the paper pressing roller is on the paper core tube instead of on the roller surface of the bottom roller, the paper core tube changes position as the paper roll diameter increases, resulting in the originally defined zero position not being a true zero position, resulting in a large error in the length of the paper roll, which greatly reduces the utilization rate of the paper roll and causes a huge waste of paper.

[0004] Therefore, it is urgent to improve the control structure of the rewinder for controlling the length of the finished paper to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide a control structure for controlling the length of finished paper based on a rewinder, and by improving the mathematical model formula, the mathematical model formula L=V*T (where L is the length of the paper roll, V is the operating speed of the bottom roller, and T is the operating time of the bottom roller) is used to calculate the length of the paper roll, and the bottom roller operating speed data obtained by an encoder with a resolution of 2048 is used to greatly improve the accuracy of the bottom roller operating speed data. A 32-bit vector frequency converter is combined with a programmable controller to process more complex control algorithms and more precise control, which can make the length of the paper roll more accurate, greatly improve the utilization rate of the paper roll, and increase production output.

[0006] In order to achieve the above-mentioned purpose, the main technical scheme adopted by the utility model includes: a large plate, a mounting seat is fixedly connected to a side wall of one side of the large plate, and a No. 1 rotating shaft and a No. 2 rotating shaft are rotatably connected to the side wall of the mounting seat away from the large plate, the No. 1 rotating shaft and the No. 2 rotating shaft are located at the same height and are symmetrically distributed about the central axis of the mounting seat, a No. 1 gear is fixedly connected to the outer wall of the No. 1 rotating shaft and the outer wall of the No. 2 rotating shaft, a No. 2 gear is fixedly connected to the outer wall of the No. 2 rotating shaft, and the No. 2 gear is located at one end of the No. 2 rotating shaft away from the mounting seat, and a driving component for driving the two No. 1 gears and a speed measuring component for measuring the speed of the No. 2 gear are provided on the large plate.

[0007] Preferably, the driving assembly includes: two support rods, a fixed plate, a motor and a No. 3 gear, the two support rods are fixedly connected to a side wall of the large plate close to the mounting seat, the fixed plate is fixedly connected to one end of the two support rods away from the large plate, the motor is fixedly mounted on a side wall of the fixed plate close to the support rods, the No. 3 gear is fixedly connected to the output end of the motor, and the No. 3 gear is meshed with the two No. 1 gears.

[0008] Preferably, the speed measuring assembly includes: a support frame, an encoder, a rotating seat and a fourth gear, the support frame and the rotating seat are both fixedly connected to a side wall of the large plate close to the mounting seat, the encoder is fixedly mounted on a side wall of the support frame away from the large plate, the fourth gear is rotatably connected to an end of the rotating seat away from the large plate, the fourth gear is meshed with the second gear, and the movable end of the encoder passes through the support frame and is fixedly connected to the fourth gear.

[0009] Preferably, a frequency converter and a programmable controller are fixedly mounted on a side wall of the large plate close to the mounting seat, the frequency converter is coupled to the motor and the programmable controller respectively, and the encoder is coupled to the programmable controller.

[0010] Preferably, the other end of the No. 1 rotating shaft and the other end of the No. 2 rotating shaft both pass through the mounting seat and the large plate and are fixedly connected to a bottom rod.

[0011] Preferably, the frequency converter is a vector frequency converter of a 32-bit system.

[0012] Preferably, the encoder has a resolution of 2048.

[0013] The utility model has at least the following beneficial effects:

[0014] 1. By improving the mathematical model formula, the mathematical model formula L=V*T (where L is the length of the paper roll, V is the operating speed of the bottom roller, and T is the operating time of the bottom roller) is used to calculate the length of the paper roll. The bottom roller operating speed data obtained by the encoder with a resolution of 2048 is used to greatly improve the accuracy of the bottom roller operating speed data. The 32-bit vector inverter combined with the programmable controller can handle more complex control algorithms and more precise control, which can make the paper roll length more accurate, greatly improve the utilization rate of the paper roll, and increase production output. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0016] Figure 1 The three-dimensional Figure 1 Schematic diagram;

[0017] Figure 2 The three-dimensional Figure 2 Schematic diagram.

[0018] In the figure, 1. large plate; 2. mounting base; 3. rotating shaft No. 1; 4. rotating shaft No. 2; 5. gear No. 1; 6. gear No. 2; 7. driving assembly; 8. speed measuring assembly; 9. supporting rod; 10. fixing plate; 11. motor; 12. gear No. 3; 13. supporting frame; 14. encoder; 15. rotating base; 16. gear No. 4; 17. frequency converter; 18. programmable controller; 19. bottom stick. DETAILED DESCRIPTION

[0019] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0020] like Figure 1-Figure 2As shown, the control structure of the rewinding machine for controlling the length of the finished paper provided in this embodiment, a mounting base 2 is fixedly connected to the side wall of one side of the large plate 1, and the mounting base 2 is rotatably connected to the side wall on the side away from the large plate 1 with a first rotating shaft 3 and a second rotating shaft 4, the first rotating shaft 3 and the second rotating shaft 4 are located at the same height and are symmetrically distributed about the central axis of the mounting base 2, a first gear 5 is fixedly connected to the outer wall of the first rotating shaft 3 and the outer wall of the second rotating shaft 4, a second gear 6 is fixedly connected to the outer wall of the second rotating shaft 4, and the second gear 6 is located at one end of the second rotating shaft 4 away from the mounting base 2, a driving assembly 7 for transmitting the two number one gears 5 and a speed measuring assembly 8 for measuring the speed of the number two gear 6 are provided on the large plate 1, the large plate 1 is used to fix and support various components, and the number one gear 5 is used to transmit the number one rotating shaft 3 and the number two rotating shaft 4.

[0021] Secondly, if Figure 1 As shown, the driving assembly 7 includes: two support rods 9, a fixing plate 10, a motor 11 and a number three gear 12. The two support rods 9 are fixedly connected to a side wall of the large plate 1 close to the mounting seat 2. The fixing plate 10 is fixedly connected to one end of the two support rods 9 away from the large plate 1. The motor 11 is fixedly mounted on a side wall of the fixing plate 10 close to the support rods 9. The number three gear 12 is fixedly connected to the output end of the motor 11. The number three gear 12 is meshed with both number one gears 5. The fixing plate 10 is used to fix the motor 11, and the number three gear 12 is used to transmit the number one gear 5.

[0022] Further, such as Figure 1 as well as Figure 2 As shown, the speed measuring assembly 8 includes: a support frame 13, an encoder 14, a rotating seat 15, a fourth gear 16 and a connecting piece. The support frame 13 and the rotating seat 15 are fixedly connected to the side wall of the large plate 1 close to the mounting seat 2. The encoder 14 is fixedly mounted on the side wall of the support frame 13 away from the large plate 1. The fourth gear 16 is rotatably connected to the end of the rotating seat 15 away from the large plate 1. The fourth gear 16 is meshed with the second gear 6. The movable end of the encoder 14 passes through the support frame 13 and is fixedly connected to the fourth gear 16. Under the action of the second gear 6, the fourth gear 16 will drive the encoder 14 to rotate. The encoder 14 is used to convert the rotation into a digital signal and transmit it to the programmable controller 18.

[0023] Furthermore, if Figure 1 as well as Figure 2 As shown, a frequency converter 17 and a programmable controller 18 are fixedly installed on the side wall of the large board 1 close to the mounting base 2. The frequency converter 17 is coupled to the motor 11 and the programmable controller 18 respectively, and the encoder 14 is coupled to the programmable controller 18. The frequency converter 17 is used to control the motor 11, and the programmable controller 18 is used to run the program.

[0024] Furthermore, Figure 1 As shown, the other end of the No. 1 rotating shaft 3 and the other end of the No. 2 rotating shaft 4 both pass through the mounting base 2 and the large plate 1 and are fixedly connected with a bottom roller 19. The frequency converter 17 is a vector frequency converter of a 32-bit system. The resolution of the encoder 14 is 2048. The bottom roller 19 is used to roll paper.

[0025] like Figure 1-Figure 2 As shown, the principle of the control structure of the rewinder provided in this embodiment for controlling the length of the finished paper is as follows: when the rewinder is reeling the paper, the programmable controller 18 transmits a signal to the frequency converter 17, and the frequency converter 17 controls the motor 11 to drive the third gear 12 to rotate. The third gear 12 drives the next gear 5 to rotate, and the first gear 5 drives the first shaft 3, the second shaft 4, the bottom roller and the second gear 6 to rotate. At the same time, the fourth gear 16 is driven by the second gear 6 to rotate, and the fourth gear 16 drives the encoder 14 to rotate. The encoder 14 converts the rotation into a digital signal and transmits it to the programmable controller 18. The programmable controller 18 obtains the length of the rolled paper through program calculation. When the paper is rolled to the required length, the programmable controller 18 controls the motor 11 to stop running through instructions, so as to obtain a more accurate paper length.

[0026] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0027] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0028] The above description shows and describes several preferred embodiments of the utility model, but as mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A control structure based on a rewinder to control the length of finished paper, for wrapping large boards (1), characterized in that: A mounting seat (2) is fixedly connected to a side wall of one side of the large plate (1); a first rotating shaft (3) and a second rotating shaft (4) are rotatably connected to a side wall of the mounting seat (2) away from the large plate (1); the first rotating shaft (3) and the second rotating shaft (4) are located at the same height and symmetrically distributed about the central axis of the mounting seat (2); a first gear (5) is fixedly connected to the outer wall of the first rotating shaft (3) and the outer wall of the second rotating shaft (4); a second gear (6) is fixedly connected to the outer wall of the second rotating shaft (4); the second gear (6) is located at one end of the second rotating shaft (4) away from the mounting seat (2); a driving component (7) for driving the two first gears (5) and a speed measuring component (8) for measuring the speed of the second gear (6) are provided on the large plate (1).

2. The control structure for controlling the length of finished paper based on the rewinding machine according to claim 1, characterized in that: The driving assembly (7) comprises: two support rods (9), a fixing plate (10), a motor (11) and a third gear (12); the two support rods (9) are fixedly connected to a side wall of the large plate (1) close to the mounting seat (2); the fixing plate (10) is fixedly connected to one end of the two support rods (9) away from the large plate (1); the motor (11) is fixedly mounted on a side wall of the fixing plate (10) close to the support rods (9); the third gear (12) is fixedly connected to an output end of the motor (11); and the third gear (12) is meshed with the two first gears (5).

3. The control structure for controlling the length of finished paper based on the rewinding machine according to claim 2, characterized in that: The speed measuring assembly (8) comprises: a support frame (13), an encoder (14), a rotating seat (15) and a fourth gear (16); the support frame (13) and the rotating seat (15) are both fixedly connected to a side wall of the large plate (1) close to the mounting seat (2); the encoder (14) is fixedly mounted on a side wall of the support frame (13) away from the large plate (1); the fourth gear (16) is rotatably connected to an end of the rotating seat (15) away from the large plate (1); the fourth gear (16) is meshed with the second gear (6); and the movable end of the encoder (14) passes through the support frame (13) and is fixedly connected to the fourth gear (16).

4. The control structure for controlling the length of finished paper based on the rewinding machine according to claim 3 is characterized by: A frequency converter (17) and a programmable controller (18) are fixedly mounted on a side wall of the large plate (1) close to the mounting seat (2); the frequency converter (17) is coupled to the motor (11) and the programmable controller (18) respectively; and the encoder (14) is coupled to the programmable controller (18).

5. The control structure for controlling the length of finished paper based on a rewinder according to claim 1, characterized in that: The other end of the first rotating shaft (3) and the other end of the second rotating shaft (4) both pass through the mounting seat (2) and the large plate (1) and are both fixedly connected to a bottom rod (19).

6. The control structure for controlling the length of finished paper based on a rewinder according to claim 4, characterized in that: The frequency converter (17) is a vector frequency converter of a 32-bit system.

7. The control structure for controlling the length of finished paper based on a rewinder according to claim 4, characterized in that: The encoder (14) has a resolution of 2048.

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