Automatic roll changing method for medium and low speed horizontal drum paper winder

Abstract

The present invention relates to an automatic roll changing method for a medium- and low-speed horizontal drum paper winder. The method utilizes a paper winder composed of an inclined cam, a paper winding cylinder, a paper cutting device, a linear guide rail, and a main arm, and realizes the smooth movement of the paper roll to be changed and the roll changing process through a secondary arm device. The specific steps include placing the paper roll to be changed in the paper storage groove of the inclined cam, moving the secondary arm to take out the paper roll to be changed, moving the paper roll to the linear guide rail and cutting the paper web, and then winding new paper. The automatic roll changing method for a medium- and low-speed horizontal drum paper winder designed by the present invention automatically completes the entire roll changing process without manual participation, greatly reducing the labor intensity, and the roll changing method simplifies the operation, can achieve continuous and efficient production, and greatly improves the automation level of the medium- and low-speed drum paper winder.

Description

Technical Field

[0001] The invention relates to the technical field of papermaking equipment, in particular to an automatic roll changing method for a medium- and low-speed horizontal drum paper winder. Background Art

[0002] In the prior art, the traditional medium and low speed horizontal drum paper reel is a semi-automatic operation equipment, and the roll changing operation after the filling process is completed still needs to be completed manually. Specifically, the operator needs to manually cut the paper when monitoring that the paper reel reaches the preset roll diameter limit, prepare to lead the paper to the new paper reel, and push the rolled paper roll out. In this process, a large amount of paper that is not rolled on the paper roll is wasted, and in the manual paper cutting process, generally, the paper is manually rolled by sticking tape or blowing compressed air. This process is time-consuming and labor-intensive, and the paper is rolled up in the clamping area formed by the paper reel and the paper reel cylinder, which poses a safety hazard. This requires certain experience in the workers' roll changing operation. Unskilled operation directly leads to a higher roll failure rate, and a large amount of paper waste will be generated during the period. Even if the roll is not well rolled, the base is not solid, and the entire roll of paper is wasted, resulting in low production efficiency. Summary of the invention

[0003] In order to solve the above problems, the present invention provides an automatic roll changing method for a medium and low speed horizontal drum paper winding machine, which simplifies the roll changing operation, eliminates manual intervention in roll changing, ensures the quality of roll changing, and realizes continuous and efficient production.

[0004] In order to achieve the above-mentioned purpose, the automatic roll changing method of the medium and low speed horizontal drum paper winding machine designed by the present invention uses a paper winding machine which is provided with an inclined cam, a paper winding cylinder, a paper breaking device, a linear guide rail and a main arm in sequence along the paper feeding direction, the contour trajectory of the inclined cam is consistent with the contour trajectory of the surface of the paper winding cylinder, and is used to guide the paper winding roller of the roll change to move to the linear guide rail; the inclined cam is provided with a paper storage groove, and the paper storage groove is used to store the paper winding roller to be changed; the linear guide rail is used to support the paper winding roller for filling the roll, and the main arm Used to push the paper roll after filling from the linear guide rail; the paper roll machine is provided with a jib device, the jib device includes a jib cam and a jib body, the jib cam is arranged at both ends of the paper roll cylinder, and the contour track of the jib cam is consistent with the contour track of the surface of the paper roll cylinder, one end of the jib body is hinged to the paper roll machine and is arranged to be able to rotate around the axis of the paper roll cylinder, and the other end is a free end, and the free end of the jib body is a U-shaped structure with front and rear dislocation. When changing the roll, follow the following steps: S1. The paper roll to be replaced is placed in the paper storage slot on the inclined cam; S2. The auxiliary arm body moves along the contour track of the auxiliary arm cam under the drive of the driving device, and takes the paper roll to be replaced from the paper storage slot; S3. The free end of the auxiliary arm body with a U-shaped structure supports the paper roll to move along the contour track of the inclined cam until the paper roll to be replaced is tangent to the paper cylinder; S4. The paper cutting device is arranged on the movement path of the free end of the auxiliary arm body to cut the paper between the paper roll to be replaced and the paper roll on the linear guide rail; S 5. The cut feeding paper is wound flatly on the paper roll to be replaced. At the same time, the main arm pushes the filled paper roll from the linear guide rail under the action of the cylinder; S6. The auxiliary arm device continues to drive the paper roll after the roll is replaced to move along the contour trajectory of the inclined cam to the linear guide rail under the action of the driving device. At the same time, the main arm is reset under the action of the cylinder to catch the paper roll after the roll is replaced for new winding and filling; S7. The auxiliary arm body returns to the initial position under the action of the driving device and enters the standby state waiting for the next roll change.

[0005] A further solution is that in step S2, the paper roll to be replaced is taken out from the paper storage slot, and specifically, the free end of the auxiliary arm body has a baffle rod and a connecting rod arranged alternately in front and back, the middle part of the connecting rod is hinged to the auxiliary arm body, and the connecting rod has a shift rod whose length is greater than the shift rod and a follower arm arranged at an angle to the shift rod, the shift rod is abutted against the auxiliary arm cam through the follower arm, and forms a U-shaped structure with the baffle rod that is staggered in front and back.

[0006] A further solution is that a driven wheel is provided at one end of the driven arm opposite to the shifting rod, and the driven arm abuts against the auxiliary arm cam via the driven wheel.

[0007] A further solution is that in step S4, the paper cutting device is fixedly mounted on the free end of the auxiliary arm body and moves synchronously driven by the auxiliary arm body.

[0008] A further solution is that the paper cutting device includes a paper cutting knife, an air chamber, a piston and a steel wire rope, pulleys are provided at both ends of the air chamber, the steel wire rope is wound around the pulley and connected to the paper cutting knife, the piston is arranged in the air chamber and connected to the steel wire rope, and air pipe plugs are provided at both ends of the air chamber, and the air pipe plugs are used to connect to an air source.

[0009] A further solution is that in step S4, when the paper cutting device cuts the paper web between the paper roller to be replaced and the paper roller being filled on the linear guide rail, the glue spraying device is used to spray glue on the paper roller to be replaced.

[0010] A further solution is to further include a tension detection device, which is used to detect the paper tension during the filling process. The tension detection device is connected to the paper cutting device and the glue spraying device for signal control. When the paper roller and the paper cylinder are tangent to each other, the tension detection device detects that the paper tension is greater than a preset tension threshold value, so as to control the paper cutting device and the glue spraying device to perform paper cutting and glue spraying actions.

[0011] A further solution is that in step S6, a shock absorbing device is provided at the end of the linear guide rail, and the shock absorbing device is used to reduce the impact force of the paper roll being pushed out of the linear guide rail after the paper roll is fully filled.

[0012] A further solution is that in step S7, the initial position of the auxiliary arm body is set at the lowest point of the motion path of its free end.

[0013] The automatic roll changing method for medium and low speed horizontal drum paper winding machines designed in the present invention automatically completes the entire roll changing process without manual intervention, greatly reducing labor intensity. The roll changing method simplifies operation and can achieve continuous and efficient production, greatly improving the automation level of medium and low speed drum paper winding machines. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a flow chart of the automatic roll changing method of the present invention;

[0015] Figure 2 is a schematic structural diagram of a paper reel in Embodiment 1 of the present invention;

[0016] Figure 3 This is a schematic diagram of the auxiliary arm device driving the paper roll in Example 1 of the present invention;

[0017] Figure 4 is a schematic structural diagram of the auxiliary arm device in Example 1 of the present invention;

[0018] Figure 5 It is a schematic structural diagram of the paper interruption device in Embodiment 1 of the present invention.

[0019] Among them: inclined cam 1, paper winding cylinder 2, paper cutting device 3, paper cutting knife 31, air chamber 32, piston 33, wire rope 34, pulley 35, air pipe plug 36, linear guide rail 4, main arm 5, paper storage slot 6, paper winding roller 7, auxiliary arm cam 8, auxiliary arm body 9, stop rod 91, connecting rod 92, lever 93, driven arm 94, driven wheel 95, glue spraying device 10, tension detection device 11, shock absorbing device 12. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0021] Example 1.

[0022] like Figure 1-5 As shown, the automatic roll changing method of the medium and low speed horizontal drum paper winding machine described in this embodiment uses a paper winding machine which is provided with an inclined cam 1, a paper winding cylinder 2, a paper breaking device 3, a linear guide rail 4 and a main arm 5 in sequence along the paper feeding direction. The contour trajectory of the inclined cam 1 is consistent with the contour trajectory of the surface of the paper winding cylinder 2, and is used to guide the paper winding roller 7 for roll change to move to the linear guide rail 4; the inclined cam 1 is provided with a paper storage groove 6, and the paper storage groove 6 is used to store the paper winding roller 7 to be changed; the linear guide rail 4 is used to support the paper winding roller 7 for filling the roll, and the paper winding roller 7 is used to fill the roll. The main arm 5 is used to push the paper roll 7 after filling and rolling out from the linear guide rail 4; the paper winding machine is provided with a secondary arm device, and the secondary arm device includes a secondary arm cam 8 and a secondary arm body 9. The secondary arm cam 8 is arranged at both ends of the paper winding cylinder 2, and the contour track of the secondary arm cam 8 is consistent with the contour track of the surface of the paper winding cylinder 2. One end of the secondary arm body 9 is hinged to the paper winding machine and is arranged to be able to rotate around the axis of the paper winding cylinder 2, and the other end is a free end. The free end of the secondary arm body 9 is a U-shaped structure with front and rear dislocation. During the winding process, Figure 2 As shown, a paper reel 7 for filling and rolling is placed on the linear guide rail 4. The main arm 5 approaches the paper reel cylinder 2 under the action of the cylinder and presses on the bearing shell of the paper reel 7 to provide the necessary filling and rolling line pressure, so that the paper reel 7 does not jump during the rotation and rolling, the paper web does not wrinkle, the paper roll is tight and uniform, and the tightness is moderate, so that the paper is smoothly wound around the periphery of the paper reel 7 and gradually accumulates and increases with the rotation of the paper reel 7. With the accumulation of winding, the radial size of the paper roll on the paper reel 7 continues to increase until the paper roll reaches the preset winding diameter limit, and then the roll is automatically changed, as shown in FIG. Figure 1 As shown, follow the steps below to change the roll:

[0023] S1. Place the paper roll 7 to be replaced in the paper storage slot 6 on the inclined cam 1; in this embodiment, an automatic feeding device can be used to realize the automatic conveying and placement of the paper roll 7. Specifically, the automatic feeding device includes a conveying device and a robotic arm. The conveying device conveys the paper roll 7 from the storage area to the robotic arm picking position. After the robotic arm grabs the paper roll 7, it automatically lifts it and places it in the paper storage slot 6 on the inclined cam 1;

[0024] S2. The auxiliary arm body 9 moves along the contour trajectory of the auxiliary arm cam 8 under the drive of the driving device, and takes out the paper roll 7 to be replaced from the paper storage slot 6; the movement trajectory of the auxiliary arm body 9 is realized by cooperating with the auxiliary arm cam 8, so that the movement trajectory is controllable, which is conducive to accurate paper removal;

[0025] S3. The free end of the auxiliary arm body 9 of the U-shaped structure supports the roll-changing paper roller 7 to move along the contour track of the inclined cam 1 until the roll-changing paper roller 7 is tangent to the roll-changing cylinder 2; in this embodiment, the U-shaped structure provides two supporting points to support the roll-changing paper roller 7 at the front and back, so that the roll-changing paper roller 7 moves along the inclined cam 1 to guide the roll-changing paper roller 7 to accurately move to the ideal roll-changing position, that is, tangent to the roll-changing cylinder 2. At this time, the paper web between the roll-changing paper roller 7 and the paper roll on the linear guide rail 4 is straightened by the tangent effect of the roll-changing paper roller 7 and the roll-changing paper cylinder 2;

[0026] S4. The paper cutting device 3 is arranged on the movement path of the free end of the auxiliary arm body 9, and cuts the paper web between the paper roll roller 7 to be replaced and the paper roll on the linear guide rail 4; the paper roll roller 7 and the paper roll cylinder 2 cooperate with each other to increase the surface tension of the paper when the paper cutting device 3 cuts the paper, and effectively avoids the possibility of paper damage caused by uneven force when cutting the paper;

[0027] S5. The cut feeding paper is wound flatly on the paper roll 7 to be replaced. At the same time, the main arm 5 pushes the paper roll 7 from the linear guide 4 under the action of the cylinder.

[0028] S6. The auxiliary arm device continues to drive the paper roll 7 after the roll change to move along the contour track of the inclined cam 1 to the linear guide rail 4 under the action of the driving device. At the same time, the main arm 5 is reset under the action of the cylinder to receive the paper roll 7 after the roll change to perform a new winding and filling. Specifically, as the diameter of the paper roll on the paper roll 7 increases, until the paper roll 7 moves out of the longest side of the U-shaped structure at the free end, the main arm 5 is retracted and reset under the action of the cylinder to receive the paper roll 7, and continues to support the paper roll to move forward along the linear guide rail 4 while continuously increasing.

[0029] S7. The auxiliary arm body 9 returns to the initial position under the action of the driving device and enters the standby state to wait for the next roll change. In this embodiment, the initial position of the auxiliary arm body 9 is set at the lowest point of the motion path of its free end, that is, when the auxiliary arm body 9 is not working, it is in a natural static state and is not affected by the driving device. This setting makes the auxiliary arm body 9 not require power consumption when in standby, which is conducive to energy saving. In this embodiment, the driving device preferably adopts a sprocket transmission mechanism with an independent driving source to quickly respond to the roll change demand.

[0030] In summary, the automatic roll changing method provided in this embodiment significantly improves the efficiency of the roll changing process by coordinating precisely designed components and processes. The precise positioning of the paper roll roller 7 and the smooth winding of the paper make the roll changing operation faster, reduce the roll changing time in production, and promote the improvement of overall production efficiency. Compared with the traditional manual intervention roll changing operation, this automatic roll changing method can significantly reduce the labor intensity of the operator, and no longer requires cumbersome manual intervention, especially in the movement, paper cutting and winding of the paper roll roller. The degree of automation is high and the operation is simple. In addition, by adopting this roll changing method, the movement of the auxiliary arm body 9 is centered on the hinge between it and the paper reel, rather than swinging back and forth between the paper slot 6 and the linear guide 4, so as to avoid the possibility that the auxiliary arm body 9 reverses and lifts up the paper and interferes with the normal paper rolling work of the paper roll on the linear guide 4.

[0031] In some embodiments, as shown in FIG. Figure 4 As shown, in step S2, the paper roll 7 to be replaced is taken out from the paper storage slot 6, specifically, the free end of the auxiliary arm body 9 has a stopper 91 and a connecting rod 92 staggered front and back, the middle part of the connecting rod 92 is hinged to the auxiliary arm body 9, and the connecting rod 92 has a shifting rod 93 with a length greater than the shifting rod 91 and a driven arm 94 set at an angle to the shifting rod 93, the shifting rod 93 is abutted against the auxiliary arm cam 8 through the driven arm 94, and forms a U-shaped structure staggered front and back with the shifting rod 91. With this structural design, the length of the lever 93 is greater than the length of the stop rod 91, so that when the auxiliary arm body 9 moves, the paper roller 7 can smoothly pass over the stop rod 91 and be pushed by the lever 93 into the front-to-back offset U-shaped structure, and the front-to-back offset structure of the two is used to expand the support range of the auxiliary arm device to avoid the possibility of tilting and falling off of the paper roller 7 when moving. At the same time, when the paper roller 7 passes over the stop rod 91, the driven arm 94 and the auxiliary arm cam 8 are abutted, so that the lever 93 rotates at the connection point with the paper winder 92, thereby increasing the opening size of the U-shaped structure to adapt to the size of the paper roller 7, thereby ensuring the accuracy and reliability of winding.

[0032] In some embodiments, Figure 2 and Figure 4As shown, a driven wheel 95 is provided at one end of the driven arm 94 opposite to the lever 93, and the driven arm 94 abuts against the auxiliary arm cam 8 through the driven wheel 95. By introducing the driven wheel 95, direct friction and wear between the driven arm 94 and the auxiliary arm cam 8 are avoided, and the driven wheel 95 can provide a smooth motion surface, which helps to ensure the stable movement of the driven arm 94. This smooth movement is very important for accurate paper removal and roll changing processes, so as to ensure the accuracy of the paper roll 7 removal process.

[0033] In some embodiments, Figure 3 As shown, in step S4, the paper cutting device 3 is fixedly mounted on the free end of the auxiliary arm body 9, and moves synchronously driven by the auxiliary arm body 9. In this way, the paper cutting device 3 moves synchronously with the auxiliary arm body 9, which can ensure that the paper cutting device 3 always maintains the best relative position with the paper roll to be switched, so that the cutting position is accurate and will not deviate from the predetermined position, which greatly improves the quality and accuracy of paper cutting.

[0034] In some embodiments, Figure 5 As shown, the paper cutting device 3 includes a paper cutting knife 31, an air chamber 32, a piston 33 and a steel wire 34. Pulleys 35 are provided at both ends of the air chamber 32. The steel wire 34 is wound around the pulleys 35 and connected to the paper cutting knife 31. The piston 33 is arranged in the air chamber 32 and connected to the steel wire 34. Air pipe plugs 36 are provided at both ends of the air chamber 32. The air pipe plugs 36 are used to connect the air source. When cutting paper, the air source is input into the air chamber 32 from the air pipe plug 36, driving the piston 33 and the steel wire 34 to move, driving the paper cutting knife 31 to accurately cut the paper. Compared with mechanical transmission cutting, the piston 33 can quickly respond to changes in air pressure, thereby quickly cutting the paper. At the same time, the structure is compact, which greatly saves equipment space.

[0035] In some embodiments, Figure 2 As shown, in step S4, when the paper cutting device 3 cuts the paper web between the paper roll 7 to be replaced and the paper roll 7 being filled on the linear guide 4, the glue spraying device 10 is used to spray glue on the paper roll 7 to be replaced. During the roll changing process, when the feeding paper is cut off and starts to be wound on the new paper roll 7, the glue spraying device 10 will spray glue on the new paper roll 7. The function of glue spraying is to increase the adhesion between the paper and the paper tube, which can effectively improve the adhesion between the paper and the new roll after the roll changing, ensure that the paper is wound on the new roll smoothly, and avoid the paper falling off and slipping.

[0036] In some embodiments, Figure 2As shown, it also includes a tension detection device 11, which is used to detect the paper tension during the filling process. The tension detection device 11 is connected to the paper breaking device 3 and the glue spraying device 10 by signal control. When the paper roll 7 is tangent to the paper roll cylinder 2, the tension detection device 11 detects that the paper tension is greater than the preset tension threshold, so as to control the paper breaking device 3 and the glue spraying device 10 to break the paper and spray glue. In this way, by introducing the tension detection device 11, the size of the paper tension is detected in real time, that is, when the paper roll 7 is tangent to the paper roll cylinder 2, the paper between the paper roll 7 to be replaced and the previous paper roll will be tightly stressed, and the paper tension will fluctuate greatly. When the paper tension fluctuation value is greater than the preset tension threshold, the paper breaking device 3 and the glue spraying device 10 start to break the paper and spray glue successively under the control of the tension detection device 11, so as to achieve accurate paper breaking and winding. In this embodiment, the specific value of the preset tension threshold can be set according to the actual type of paper, which will not be repeated here.

[0037] In some embodiments, Figure 2 As shown, in step S6, a shock absorbing device 12 is provided at the end of the linear guide rail 4, and the shock absorbing device 12 is used to reduce the impact force of the paper roll 7 after the filling is pushed out from the linear guide rail 4. In this embodiment, the shock absorbing device 12 can be a rubber block to alleviate the impact force, so that the paper roll 7 is pushed out smoothly and slowly, preventing the impact force from causing damage to the equipment and the paper roll product, which helps to extend the life of the equipment and ensure product quality.

[0038] The automatic roll changing method for a medium and low speed horizontal cylindrical paper winding machine provided in this embodiment automatically completes the entire roll changing process without the need for human intervention, thereby greatly reducing labor intensity. The roll changing method simplifies the operation and can achieve continuous and efficient production, greatly improving the automation level of the medium and low speed cylindrical paper winding machines.

[0039] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0040] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic reel changing method for a medium-low speed horizontal cylinder paper reel, using a paper reel having an inclined cam (1), a paper reel cylinder (2), a paper cutting device (3), a linear guide rail (4) and a main arm (5) arranged in sequence along a paper feeding direction, characterized in that: The contour track of the inclined cam (1) is consistent with the contour track of the surface of the paper reel cylinder (2), and is used to guide the paper reel (7) to be replaced to move to the linear guide rail (4); the inclined cam (1) is provided with a paper storage groove (6), and the paper storage groove (6) is used to store the paper reel (7) to be replaced; the linear guide rail (4) is used to support the paper reel (7) to be filled, and the main arm (5) is used to push the paper reel (7) that has been filled from the linear guide rail (4); the paper reel is provided with a secondary arm device, and the secondary arm device includes a secondary arm An arm cam (8) and an auxiliary arm body (9), wherein the auxiliary arm cam (8) is arranged at both ends of the paper reel cylinder (2), and the contour track of the auxiliary arm cam (8) is consistent with the contour track of the surface of the paper reel cylinder (2), one end of the auxiliary arm body (9) is hinged to the paper reel and is arranged to be able to rotate around the axis of the paper reel cylinder (2), and the other end is a free end, and the free end of the auxiliary arm body (9) is a U-shaped structure with front and rear offset. When changing the paper roll, the following steps are performed: S1. Place the paper reel (7) to be replaced on the paper storage groove on the inclined cam (1) (6); S2. The auxiliary arm body (9) moves along the contour track of the auxiliary arm cam (8) under the drive of the driving device, and takes the paper roll (7) to be replaced from the paper storage groove (6); S3. The free end of the auxiliary arm body (9) with a U-shaped structure supports the paper roll (7) to move along the contour track of the inclined cam (1) until the paper roll (7) to be replaced is tangent to the paper roll cylinder (2); S4. The paper breaking device (3) is arranged on the movement path of the free end of the auxiliary arm body (9), and the paper roll (7) to be replaced is tangent to the straight guide. The paper webs between the paper rolls on the rail (4) are cut off; S5. The cut paper is evenly wound on the paper roll roller (7) to be replaced, and at the same time, the main arm (5) pushes the paper roll roller (7) that has been filled out from the linear guide rail (4) under the action of the cylinder; S6. The auxiliary arm device continues to drive the paper roll roller (7) after the roll is replaced to move along the contour track of the inclined cam (1) to the linear guide rail (4) under the action of the driving device, and at the same time, the main arm (5) is reset under the action of the cylinder to receive the paper roll roller (7) after the roll is replaced, so as to carry out a new winding and filling; S7. The auxiliary arm body (9) returns to the initial position under the action of the driving device and enters a standby state to wait for the next roll change.

2. The automatic roll changing method for a medium and low speed horizontal drum paper winder according to claim 1 is characterized in that: In step S2, the paper roll (7) to be replaced is taken out from the paper storage groove (6). Specifically, the free end of the auxiliary arm body (9) has a stopper rod (91) and a connecting rod (92) arranged in a staggered manner in the front and back directions. The middle part of the connecting rod (92) is hinged to the auxiliary arm body (9), and the connecting rod (92) has a shifting rod (93) whose length is greater than the stopper rod (91) and a driven arm (94) arranged at an angle to the shifting rod (93). The shifting rod (93) is abutted against the auxiliary arm cam (8) through the driven arm (94), and forms a U-shaped structure with a front-back staggered position with the stopper rod (91).

3. The automatic roll changing method for a medium and low speed horizontal drum paper winder according to claim 2 is characterized in that: A driven wheel (95) is provided at one end of the driven arm (94) opposite to the shifting rod (93), and the driven arm (94) abuts against the auxiliary arm cam (8) via the driven wheel (95).

4. The automatic roll changing method for a medium and low speed horizontal drum paper winder according to claim 1 is characterized in that: In step S4, the paper cutting device (3) is fixedly mounted on the free end of the auxiliary arm body (9), and moves synchronously driven by the auxiliary arm body (9).

5. The automatic reel changing method for a medium-low speed horizontal drum paper reel according to claim 1 or 4, characterized in that: The paper cutting device (3) comprises a paper cutting knife (31), an air chamber (32), a piston (33) and a steel wire rope (34); pulleys (35) are provided at both ends of the air chamber (32); the steel wire rope (34) is wound around the pulley (35) and is connected to the paper cutting knife (31); the piston (33) is arranged in the air chamber (32) and is connected to the steel wire rope (34); air pipe plugs (36) are provided at both ends of the air chamber (32); the air pipe plugs (36) are used to connect to an air source.

6. The automatic roll changing method for a medium and low speed horizontal drum paper winder according to claim 1 is characterized in that: In step S4, when the paper cutting device (3) cuts the paper web between the paper reel (7) to be replaced and the paper reel (7) being filled on the linear guide rail (4), the glue spraying device (10) is used to spray glue on the paper reel (7) to be replaced.

7. The automatic reel changing method for a medium-low speed horizontal drum paper reel according to claim 6 is characterized in that: The invention also comprises a tension detection device (11), the tension detection device (11) being used to detect the tension of the paper during the reel filling process, the tension detection device (11) being connected to the paper cutting device (3) and the glue spraying device (10) by signal control, and when the paper reel (7) and the paper reel cylinder (2) are tangent to each other so that the tension detection device (11) detects that the paper tension is greater than a preset tension threshold, the paper cutting device (3) and the glue spraying device (10) are controlled to perform paper cutting and glue spraying actions.

8. The automatic roll changing method for a medium-low speed horizontal drum paper winder according to claim 1 is characterized in that: In step S6, a shock absorbing device (12) is arranged at the end of the linear guide rail (4), wherein the shock absorbing device (12) is used to reduce the impact force of the paper reel (7) being pushed out of the linear guide rail (4) after the paper reel is fully filled.

9. The automatic reel changing method for a medium-low speed horizontal drum paper reel according to claim 1, characterized in that: In step S7, the initial position of the auxiliary arm body (9) is set at the lowest point of the motion path of its free end.

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