A forming paper rewinder

Abstract

The utility model belongs to paper rewinding technical field especially relates to a forming paper rewinder, include: frame, winding roller, power source, swing arm, linkage roller and travel switch, frame is as the load main body of rewinder, winding roller rotatory installation is in the frame, winding roller can be winding to paper when rotating, power source provides the rotary force of winding paper for winding roller, swing arm is located winding roller's one side, swing arm's one end rotatory installation is in the frame, swing arm's other end is provided with contact block, and swing arm is provided with elastic part between the frame, rotatory connection is in swing arm, linkage roller is close to the outer circumferential wall of winding roller under the action of elastic part, travel switch sets up in swing arm's one side away from winding roller, and travel switch is located the movement track of contact block, compared with prior art, the rewinder of the utility model replaces expensive electronic sensor through a clever mechanical detection mechanism, and the paper roll reaches predetermined diameter automatically stops, realizes the effective unity of low cost and reliability.

Description

Technical Field

[0001] This utility model belongs to the field of paper rewinding technology, and in particular relates to a forming paper rewinding machine. Background Technology

[0002] A paper rewinding machine is an industrial device specifically designed to rewind large-diameter, wide-width master rolls of paper into smaller rolls with specific width, diameter, and tightness requirements.

[0003] In existing technologies, high-end rewinding machines typically use encoders or laser rangefinders to accurately measure the length of paper passing through or monitor the paper roll diameter in real time. For example, an encoder measures the rotation of the guide roller and calculates the paper feed length by combining it with the circumference; or a laser sensor directly measures the change in the outer diameter of the paper roll. These methods can achieve high-precision fixed-length cutting and constant linear speed control, thereby ensuring product consistency and high quality.

[0004] However, this high-precision solution has a significant drawback: it is expensive. Encoders, laser sensors, and their associated control systems greatly increase the manufacturing cost of the equipment. For applications producing intermediate products (such as master rolls that need to be slit again) or low-value, high-volume fast-moving consumer goods (such as low-grade toilet paper, industrial liner paper, protective paper, etc.), the requirements for the diameter and length accuracy of the final paper roll are not high. In such scenarios, using a high-end rewinding machine will undoubtedly lead to excessively high production costs and a low return on investment.

[0005] On the other hand, if we rely entirely on manual observation to determine the winding diameter and control machine stopping and slitting, the following problems exist: 1. High dependence on worker experience: Different workers have different judgment standards, which leads to unstable product quality.

[0006] 2. Inefficient and wasteful: Workers need to pay constant attention, and errors in judgment or delayed reactions can easily lead to rolls being too large or too small, resulting in paper waste.

[0007] 3. Safety hazards exist: Operators need to be close to the high-speed rotating machinery to observe, which poses certain safety risks.

[0008] Therefore, there is an urgent need in this field for a paper rewinding machine that can guarantee basic automation functions, eliminate reliance on human experience, and simultaneously achieve low manufacturing costs and high operational reliability. Utility Model Content

[0009] The purpose of this invention is to address the aforementioned technical problems by providing a paper rewinding machine. This rewinding machine uses a clever mechanical detection mechanism to replace expensive electronic sensors, automatically stopping the machine when the paper roll reaches a predetermined diameter, thus achieving an effective balance between low cost and reliability.

[0010] In view of this, the present invention provides a forming paper rewinding machine, comprising: The frame serves as the main support structure for the rewinding machine; The take-up roll is rotatably mounted on the frame and can wind up the paper as it rotates. The power source provides the rotational force for the winding rollers to wind the paper. The swing arm is located on one side of the take-up roller. One end of the swing arm is rotatably mounted on the frame, and the other end of the swing arm is provided with a contact block. An elastic element is provided between the swing arm and the frame. The linkage roller is rotatably connected to the swing arm, and under the action of the elastic element, the linkage roller is in close contact with the outer peripheral wall of the take-up roller; Limit switch, the limit switch is located on the side of the swing arm away from the take-up roller, the limit switch is located on the movement trajectory of the contact block; When the contact block triggers the limit switch, the take-up roller stops winding.

[0011] In this technical solution, initially, the unwound paper on the take-up roller has the smallest diameter. Under the action of the elastic element, the swing arm drives the linkage roller to stick tightly to the outer peripheral wall of the take-up roller. As the winding proceeds, the diameter of the paper roll continuously increases, thereby pushing the linkage roller that is pressed against its surface, forcing the entire swing arm to swing outward (away from the take-up roller) around its fulcrum. The swing of the swing arm drives the contact block on it to move synchronously. When the diameter of the paper roll grows to a preset value, the contact block just moves to and triggers the limit switch. After the limit switch is triggered, it immediately sends an electrical signal (usually disconnected or connected) to the control system. The control system then commands the power source to stop working, the take-up roller stops rotating, and one winding cycle is completed.

[0012] Furthermore, the above technical solution also includes: The unwind roll is located on one side of the take-up roll. The unwind roll has a roll of paper wound on it and can unwind the paper. The guide roller assembly is located between the unwinding roller and the take-up roller, and it guides the paper. The slitting assembly is located between the unwinding roller and the take-up roller, and it can slit the paper.

[0013] In the above technical solution, a further step is to provide an unwinding frame on the frame, an unwinding cover on the unwinding frame, and the unwinding cover and the unwinding frame are detachably connected, with the unwinding roller installed between the unwinding frame and the unwinding cover.

[0014] In the above technical solution, the guide roller group further includes a front roller group and a rear roller group, the slitting assembly is disposed between the front roller group and the rear roller group, and the take-up roller is located on the side of the rear roller group away from the slitting assembly.

[0015] In the above technical solution, the slitting component further includes: A slitting table is provided with a blade groove; The blade holder is located above the slitting table. A longitudinal pusher is installed on the blade holder, and a cutter is installed at the bottom of the longitudinal pusher. The paper passes between the slitting table and the cutter. The longitudinal pusher can drive the cutter to move closer to or away from the blade groove, and the cutter can cooperate with the blade groove to cut the paper.

[0016] In the above technical solution, the guide roller group further includes multiple guide rollers, which are rotatably connected to the frame. At least one guide roller is provided with a pressure roller on one side. The distance between the pressure roller and the corresponding guide roller is adjustable, and the paper passes through the pressure roller and the corresponding guide roller.

[0017] In the above technical solution, a fixed frame is further provided on the frame, and an adjusting frame is provided on the side of the fixed frame near the pressure roller. A guide rod that can be slidably connected to the fixed frame is provided on the adjusting frame. A threaded screw and nut are provided on the fixed frame. One end of the screw is rotatably connected to the adjusting frame, and the pressure roller is rotatably connected to the adjusting frame.

[0018] In the above technical solution, a take-up frame is further provided on the frame, a take-up cover is provided on the take-up frame, the take-up cover is detachably connected to the take-up frame, and the take-up roller is installed between the take-up frame and the take-up cover.

[0019] The beneficial effects of this utility model are: 1. By replacing expensive encoders or laser rangefinders with simple and reliable mechanical structures (swing arms, elastic components) and inexpensive limit switches, the manufacturing and maintenance costs of the equipment are greatly reduced, and the operating costs of the rewinding machine are significantly reduced.

[0020] 2. The mechanical structure formed by the combination of swing arm, linkage roller, elastic element, contact block, and limit switch is not easily affected by industrial environmental factors such as dust, humidity, and electromagnetic interference, resulting in a low failure rate and stable operation.

[0021] 3. It has achieved the core automation function of automatically stopping the machine when the predetermined diameter is reached, eliminating the reliance on the experience of operators, ensuring the basic consistency of product specifications, and reducing waste caused by human error.

[0022] 4. By adjusting the position of the limit switch on the mounting bracket, different final winding diameters can be easily set to meet different winding requirements. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the rewinding machine of this utility model.

[0025] Figure 2 for Figure 1 A magnified schematic diagram of a portion of the structure at point A shows the state where the winding roller has not fully wound up the paper.

[0026] Figure 3 This is a partially enlarged schematic diagram of a rewinder, showing the state where the take-up roller is fully wound with paper.

[0027] Figure 4 This is a three-dimensional structural diagram of the first side of the paper winding status monitoring structure of the winding roller in this utility model.

[0028] Figure 5 This is a three-dimensional structural diagram of the second side of the paper winding status monitoring structure of the winding roller in this utility model.

[0029] Figure 6 This is a schematic diagram of the installation structure of the pressure roller in this utility model.

[0030] The markings in the diagram are as follows: Z. Paper; 1. Frame; 2. Take-up roller; 201. Take-up frame; 202. Take-up cover; 3. Power source; 4. Swing arm; 501. Contact block; 502. Elastic element; 6. Linkage roller; 7. Limit switch; 8. Unwind roller; 801. Unwind frame; 802. Unwind cover; 9. Guide roller assembly; 901. Guide roller; 1001. Slitting table; 1002. Knife holder; 1003. Cutting knife; 1004. Longitudinal pusher; 11. Pressure roller; 12. Fixing frame; 13. Adjusting frame; 14. Guide rod; 15. Screw; 16. Control box; Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] In the description of this utility model, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items, and therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0033] Example 1 This embodiment provides a forming paper rewinding machine, including: a frame 1, a winding roller 2, a power source 3, a swing arm 4, a linkage roller 6, a limit switch 7, an unwind roller 8, a guide roller group 9, and a slitting assembly; The frame 1, as the main support of the rewinding machine, has a horizontally arranged base plate and several brackets or support plates mounted on the base plate; Please see Figure 1 An unwinding roller 8 is installed on one side of the base plate to support the enlarged master roll. The unwinding roller 8 is installed on the base plate via an unwinding frame 801 and an unwinding cover 802. For example, the unwinding roller 8 has end shafts at both ends. The unwinding frame 801 includes two parallel uprights. The unwinding roller 8 is located between the two uprights. The top of each upright is provided with a semi-circular groove that matches the end shaft. The end shafts at both ends of the unwinding roller 8 can be placed in the groove. The bottom of the unwinding cover 802 is a semi-circular groove structure that matches the end shaft. The unwinding cover 802 covers the top of the uprights to limit the radial runout of the unwinding roller 8. The unwinding cover 802 and the uprights can be connected by bolts and nuts. This makes it easy to disassemble and assemble the unwinding cover 802 and the uprights, and facilitates the replacement of the unwinding roller 8. Please see Figure 1 The take-up roller 2 is located on one side of the unwind roller 8 and is rotatably mounted on the frame 1 via the take-up holder 201. It is used to wind and collect the paper Z. For details, please refer to [link / reference]. Figure 4 and Figure 5The take-up frame 201 is equipped with a take-up cover 202, and the two ends of the take-up roller 2 are also equipped with end shafts. The take-up frame 201 has the same structure as the unwinding frame 801, and also includes two parallel uprights. The take-up roller 2 is located between the two uprights. The top of each upright is equipped with a semi-circular groove that matches the end shaft. The end shafts at both ends of the take-up roller 2 can be placed in the groove. The bottom of the take-up cover 202 is a semi-circular groove structure that matches the end shaft. The take-up cover 202 covers the top of the uprights to limit the radial runout of the take-up roller 2. The take-up roller 2 and the uprights can also be connected by bolts and nuts to facilitate the replacement of the take-up roller 2. Power source 3 provides rotational force for winding paper Z to take-up roller 2. Please refer to [link / reference]. Figure 5 The power source 3 is installed on the winding frame 201; the power source 3 is preferably a three-phase asynchronous motor or a brake motor, which directly drives the winding roller 2 through belt drive, chain drive or reducer. The motor power is selected according to the tension, width and maximum roll diameter requirements of the winding paper Z. The guide roller group 9 is located between the unwinding roller 8 and the take-up roller 2, and is used to guide and support the paper Z path to ensure smooth paper Z transport; the slitting assembly is located between the unwinding roller 8 and the take-up roller 2, and is used to cut the continuous paper Z after winding; preferably, the guide roller group 9 includes a front roller group and a rear roller group, the slitting assembly is set between the two, and the take-up roller 2 is located on the side of the rear roller group away from the slitting assembly, so that the paper Z path is clearly divided into the unwinding area, the slitting area and the take-up area. The front roller group is responsible for feeding the paper Z smoothly into the slitting assembly, and the rear roller group is responsible for guiding the slitting paper Z to the take-up roller 2, which ensures the stability of the slitting and winding process; In this embodiment, please refer to Figure 1 The guide roller group 9 includes multiple guide rollers 901, which are rotatably connected to the bracket or support plate on the base plate. At least one guide roller 901 has a pressure roller 11 on one side. The distance between the pressure roller 11 and the guide roller 901 is adjustable, and the paper Z passes between them. The adjustable pressure roller 11 and the guide roller 901 constitute a simple tension control or flattening mechanism. By adjusting the pressure between them, the paper Z can be slightly stretched and flattened, eliminating some wrinkles and helping to improve the flatness of the winding. Please see Figure 6 A fixed frame 12 is provided on the frame 1. An adjusting frame 13 is provided on the side of the fixed frame 12 near the pressure roller 11. The adjusting frame 13 is U-shaped. The pressure roller 11 is rotatably connected to the inner sides of both ends of the adjusting frame 13. A guide rod 14 that can be slidably connected to the fixed frame 12 is provided on the adjusting frame 13. A threaded screw 15 and a nut are provided on the fixed frame 12. One end of the screw 15 is rotatably connected to the adjusting frame 13. Rotating the screw 15 can drive the adjusting frame 13 and the pressure roller 11 installed on it to move closer to or further away from the fixed guide roller 901. In this way, the distance between the pressure roller 11 and the guide roller 901 can be changed by manual adjustment, resulting in low operating costs. In this embodiment, the slitting assembly includes: a slitting table 1001, a blade holder 1002, a cutting blade 1003, and a longitudinal pusher 1004; please refer to Figure 1 The slitting table 1001 is inlaid with a narrow blade groove; the blade holder 1002 is located above the slitting table 1001, and a longitudinal pusher 1004 is provided on the blade holder 1002. A cutter 1003 is provided at the bottom of the longitudinal pusher 1004. The length of the cutter 1003 is greater than the width of the paper Z. The paper Z passes through the slitting table 1001 and the cutter 1003. The longitudinal pusher 1004 can drive the cutter 1003 to move closer to or away from the blade groove. The cutter 1003 can cooperate with the blade groove to cut the paper Z. For example, the longitudinal pusher 1004 can be a cylinder or an electric push rod. Please see Figure 4 and Figure 5 The swing arm 4 is located on one side of the take-up roll 2. One end of the swing arm 4 is rotatably mounted on the frame 1 through a bearing or pin, so that the swing arm 4 can swing freely around the fulcrum. The other end of the swing arm 4 is provided with a contact block 501. An elastic element 502 is provided between the swing arm 4 and the frame 1. The function of the elastic element 502 is to provide a force that makes the linkage roll 6 continuously press against the outer peripheral wall of the paper roll being formed. For example, the elastic element 502 can be a tension spring or a torsion spring. The linkage roller 6 is rotatably connected to the swing arm 4 via a bearing. The linkage roller 6 is arranged parallel to the take-up roller 2. Under the action of the elastic element 502, the linkage roller 6 is in close contact with the outer peripheral wall of the unwinding roller 8. The limit switch 7 is fixedly mounted on the frame 1 by a mounting bracket, located on the side of the swing arm 4 away from the take-up roller 2, and precisely located on the movement trajectory of the contact block 501; the limit switch 7 is preferably a roller-type micro switch or a proximity switch, and its signal output terminal is connected to the on / off circuit of the control power source 3. Please see Figure 5 A control box 16 is also installed on the frame 1. The control box 16 contains a controller, a power supply, etc. The power supply provides power to the controller, limit switch 7, power source 3, longitudinal push component 1004, etc. The limit switch 7 and the power source 3 are both electrically connected to the controller. When the contact block 501 triggers the limit switch 7, the limit switch 7 transmits a signal to the controller, and the controller controls the power source 3 to stop driving the winding roller 2, and the winding roller 2 stops winding. The working principle of the forming paper rewinder in this embodiment is as follows: After being drawn from the master roll, paper Z is guided by guide roller group 9 and passes through the slitting assembly before being wound and wound by take-up roller 2. Please refer to [link to relevant documentation]. Figure 2At the start of winding, the winding roller 2 only has the core, which has a very small diameter. Under the action of the elastic element 502, the swing arm 4 swings inward, causing the linkage roller 6 to press tightly against the core. As winding proceeds, the diameter of the paper roll on the winding roller 2 continuously increases, and the outer surface of the paper roll pushes the linkage roller 6 outward, forcing the swing arm 4 to swing counterclockwise around its fulcrum. The swing of the swing arm 4 drives the contact block 501 to move outward. Please refer to [link to relevant documentation]. Figure 3 When the paper roll diameter reaches the preset value, the contact block 501 moves to the trigger position of the limit switch 7. The limit switch 7 is triggered and immediately sends a stop signal to the controller in the control box 16. The controller then cuts off the power supply to the power source 3, and the winding roller 2 stops rotating. At this time, the operator can operate the slitting component to cut the paper Z, then open the winding cover 202, remove the full roll of paper, replace it with a new core, and start the next work cycle.

[0034] The embodiments of the present invention have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A paper rewinding machine, comprising: The frame (1) serves as the main support structure of the rewinder; A take-up roller (2) is rotatably mounted on the frame (1) and is capable of winding the paper (Z) while rotating. Power source (3), which provides rotational force for the winding roller (2) to wind the paper (Z); Its characteristic is that it further includes: A swing arm (4) is located on one side of the take-up roller (2). One end of the swing arm (4) is rotatably mounted on the frame (1). The other end of the swing arm (4) is provided with a contact block (501). An elastic element (502) is provided between the swing arm (4) and the frame (1). Linkage roller (6), which is rotatably connected to the swing arm (4), and the linkage roller (6) is in close contact with the outer peripheral wall of the take-up roller (2) under the action of the elastic element (502); Limit switch (7), the limit switch (7) is located on the side of the swing arm (4) away from the take-up roller (2), the limit switch (7) is located on the movement trajectory of the contact block (501); When the contact block (501) triggers the limit switch (7), the winding roller (2) stops winding.

2. The paper rewinding machine according to claim 1, characterized in that, Also includes: Unwinding roller (8) is located on one side of winding roller (2). A roll of paper (Z) is wound on the unwinding roller (8). The unwinding roller (8) can unwind the paper (Z). Guide roller assembly (9), which is located between the unwinding roller (8) and the take-up roller (2), guide roller assembly (9) can guide the paper (Z); The slitting assembly is located between the unwinding roller (8) and the rewinding roller (2), and the slitting assembly is capable of slitting the paper (Z).

3. The paper rewinding machine according to claim 2, characterized in that: The frame (1) is provided with an unwinding frame (801), and the unwinding frame (801) is provided with an unwinding cover (802). The unwinding cover (802) is detachably connected to the unwinding frame (801), and the unwinding roller (8) is installed between the unwinding frame (801) and the unwinding cover (802).

4. The paper rewinding machine according to claim 2, characterized in that: The guide roller group (9) includes a front roller group and a rear roller group, the slitting assembly is disposed between the front roller group and the rear roller group, and the take-up roller (2) is located on the side of the rear roller group away from the slitting assembly.

5. The paper rewinding machine according to claim 4, characterized in that, The slitting component includes: A slitting table (1001) is provided with a cutting groove; A blade holder (1002) is located above the slitting table (1001). A longitudinal pusher (1004) is provided on the blade holder (1002), and a cutter (1003) is provided at the bottom of the longitudinal pusher (1004). Paper (Z) passes between the slitting table (1001) and the cutter (1003). The longitudinal pusher (1004) can drive the cutter (1003) to move closer to or away from the blade groove. The cutter (1003) can cooperate with the blade groove to cut the paper (Z).

6. The paper rewinding machine according to any one of claims 2-5, characterized in that: The guide roller group (9) includes multiple guide rollers (901), which are rotatably connected to the frame (1). At least one guide roller (901) has a pressure roller (11) on one side. The distance between the pressure roller (11) and the corresponding guide roller (901) is adjustable. The paper (Z) passes between the pressure roller (11) and the corresponding guide roller (901).

7. The paper rewinding machine according to claim 6, characterized in that: A fixed frame (12) is provided on the frame (1). An adjusting frame (13) is provided on the side of the fixed frame (12) near the pressure roller (11). A guide rod (14) that can be slidably connected to the fixed frame (12) is provided on the adjusting frame (13). A screw (15) and a nut with threaded engagement are provided on the fixed frame (12). One end of the screw (15) is rotatably connected to the adjusting frame (13). The pressure roller (11) is rotatably connected to the adjusting frame (13).

8. The paper rewinding machine according to claim 1, characterized in that: A take-up frame (201) is provided on the frame (1), and a take-up cover (202) is provided on the take-up frame (201). The take-up cover (202) is detachably connected to the take-up frame (201), and the take-up roller (2) is installed between the take-up frame (201) and the take-up cover (202).

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