Medium and low speed horizontal drum paper reel with automatic reel change

Abstract

The present invention relates to a medium- and low-speed horizontal drum automatic roll-changing paper reel, comprising a frame, and a main arm, a secondary arm cam, an inclined cam, a paper cutting device, a linear guide rail, a paper reel roller, and a paper reel cylinder arranged on the frame. The medium- and low-speed horizontal drum automatic roll-changing paper reel designed by the present invention, through structural design, is provided with a paper storage slot for storing the paper roll to be replaced on the inclined cam, and a secondary arm device capable of moving along the contour track of the secondary arm cam is provided, thereby achieving accurate removal of the paper roll to be replaced; the secondary arm device accurately introduces the removed paper roll to be replaced into the paper cutting device for paper web cutting, which not only greatly reduces the labor intensity of the operator, but also ensures the quality of paper cutting, avoids the problems of paper breakage and wrinkles that may be caused by manual paper cutting, and effectively improves product quality; cooperates with the paper cutting device to achieve accurate switching of paper rolls, ensuring the smooth progress of the entire automatic roll-changing process.

Description

Technical Field

[0001] The invention relates to the technical field of papermaking equipment, in particular to a paper reel with a medium or low speed horizontal drum and automatic reel change. Background Art

[0002] In the existing technology, the traditional medium and low speed horizontal drum paper winder 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 roll reaches the preset roll diameter limit, prepare to guide the paper to the new paper roll, and push the rolled paper roll out. In this process, a large amount of paper that is not wound on the paper roll is wasted. In the manual paper cutting process, the paper is generally assisted by manually applying tape or blowing compressed air to assist in paper winding. This process is time-consuming and labor-intensive. Moreover, the paper is wound on the nip formed by the paper roll and the paper cylinder, which poses a safety hazard. This requires certain experience in roll changing operations of the workers. Unskilled operation directly leads to a higher roll failure rate, which will generate a large amount of paper waste during the process. Even if the roll is not well wound, the base is not solid, and the entire roll of paper is wasted, resulting in low production efficiency.

[0003] Therefore, there is an urgent need for an automatic roll changing device suitable for medium and low speed drum paper winding machines to solve the roll changing failure problem easily caused by traditional semi-automatic operation and improve the automation level of the device and product quality. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a paper reeling machine with automatic roll changing of horizontal cylinder at medium and low speeds, which replaces manual paper cutting, improves production efficiency, reduces paper waste, and alleviates labor intensity, while realizing continuous production of paper rolls and stable quality.

[0005] In order to achieve the above-mentioned purpose, the medium and low speed horizontal cylinder automatic roll changing paper winding machine designed by the present invention includes a frame, and a main arm, a sub-arm cam, an inclined cam, a paper cutting device, a linear guide rail, a paper winding roller and a paper winding cylinder arranged on the frame, the inclined cam is provided with a paper storage groove for storing the paper winding roller; the frame is provided with a sub-arm device, and the sub-arm device is configured to move along the contour track of the sub-arm cam under the action of a driving device; when changing the roll, the sub-arm device moves along the contour track of the sub-arm cam to place the paper in the paper storage groove The paper roller inside is taken out and driven to move along the contour track of the inclined cam and be tangent to the paper cylinder; one end of the linear guide rail is arranged on the movement path of the auxiliary arm device, and is used to support the paper roller for filling the roll; the paper cutting device is arranged on the movement path of the auxiliary arm device and is located in front of the linear guide rail, and is used to cut the paper web when changing the roll; the main arm is used to support the paper roller for filling the roll on the linear guide rail. After the filling is completed, the main arm pushes the paper roller with the cut paper web out of the linear guide rail under the action of the cylinder.

[0006] In order to accurately cut the paper web for reel change, the paper cutting device is fixedly mounted on the auxiliary arm device and moves under the drive of the auxiliary arm device.

[0007] In order to reduce the possibility of accidents such as the paper roller tilting or slipping, the auxiliary arm device includes an auxiliary arm body, a stop rod and a connecting rod. 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 stop rod and a follower arm set at an angle to the shift rod. The shift rod is against the auxiliary arm cam through the follower arm, and forms a U-shaped structure with the stop rod that is staggered front and back.

[0008] In order to adapt to paper rolls of various shapes and sizes, a driven wheel is provided at one end of the driven arm opposite to the shifting rod, and the driven arm is abutted against the auxiliary arm cam via the driven wheel.

[0009] For precise control and adjustment, the driving device is a sprocket transmission mechanism with an independent driving source.

[0010] In order to accurately cut the paper web while saving space, 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. Trachea plugs are provided at both ends of the air chamber. The trachea plugs are used to connect to the air source.

[0011] In order to improve the quality of roll changing, a glue spraying device is also included. The glue spraying device is arranged near the inclined cam and is used for spraying glue to the paper roller when changing the roll.

[0012] In order to further improve the degree of automation, it also includes a tension detection device, which is arranged on the feeding track of the paper winding cylinder and is used to detect the paper tension during the filling process. The tension detection device is connected to the signal control of the paper cutting device and the glue spraying device. When the paper winding roller and the paper winding cylinder are tangent, the tension detection device detects that the paper tension is greater than the preset tension threshold, so as to control the paper cutting device and the glue spraying device to perform paper cutting and glue spraying actions.

[0013] In order to protect the equipment and the paper winding roller, a shock-absorbing block is also included. The shock-absorbing block is arranged at the end of the linear guide rail opposite to the paper winding cylinder, and is used to reduce the impact force of the paper winding roller being pushed out of the linear guide rail after the paper is fully filled.

[0014] The medium and low speed horizontal drum automatic roll changing paper winding machine designed by the present invention has a paper storage groove for storing the paper roll to be changed on the inclined cam through structural design, and an auxiliary arm device that can move along the contour track of the auxiliary arm cam is provided, thereby realizing the accurate removal of the paper roll to be changed; the auxiliary arm device accurately introduces the removed paper roll to be changed into the paper cutting device for paper web cutting, which not only greatly reduces the labor intensity of the operator, but also ensures the quality of paper cutting, avoids the problems of paper breakage and wrinkles that may be caused by manual paper cutting, and effectively improves product quality; cooperates with the paper cutting device to realize accurate switching of paper rolls, ensuring the smooth progress of the entire automatic roll changing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the auxiliary arm device driving the paper winding roller in Example 1 of the present invention;

[0017] Figure 3 1 is a schematic structural diagram of the auxiliary arm device in Example 1 of the present invention;

[0018] Figure 4 It is a structural schematic diagram of the paper interrupting device in embodiment 1 of the present invention.

[0019] Among them: frame 1, main arm 2, auxiliary arm cam 3, inclined cam 4, paper cutting device 5, paper cutting knife 51, air chamber 52, piston 53, wire rope 54, pulley 55, trachea plug 56, linear guide 6, paper winding roller 7, paper storage slot 8, auxiliary arm device 9, auxiliary arm body 91, gear lever 92, shift lever 93, driven arm 94, driven wheel 95, driving device 10, glue spraying device 11, tension detection device 12, shock absorbing block 13, paper winding cylinder 14. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described below with reference to 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 1-4As shown, the medium and low speed horizontal cylinder automatic roll changing paper winding machine described in this embodiment includes a frame 1, and a main arm 2, a sub-arm cam 3, an inclined cam 4, a paper cutting device 5, a linear guide 6, a paper winding roller 7 and a paper winding cylinder 14 arranged on the frame 1, and the inclined cam 4 is provided with a paper storage groove 8 for storing the paper winding roller 7; the frame 1 is provided with a sub-arm device 9, and the sub-arm device 9 is configured to be able to move along the contour track of the sub-arm cam 3 under the action of the driving device 10; when changing the roll, the sub-arm device 9 moves along the contour track of the sub-arm cam 3 to place the paper in the paper storage groove 8 The paper reel 7 is taken out and driven to move along the contour track of the inclined cam 4 and tangent to the paper reel cylinder 14; one end of the linear guide rail 6 is arranged on the movement path of the auxiliary arm device 9, and is used to support the paper reel 7 for filling the roll; the paper cutting device 5 is arranged on the movement path of the auxiliary arm device 9 and is located in front of the linear guide rail 6, and is used to cut the paper web when changing the roll; the main arm 2 is used to support the paper reel 7 for filling the roll on the linear guide rail 6. After filling is completed, the main arm 2 pushes the paper reel 7 with the cut paper web off the linear guide rail 6 under the action of the cylinder. When working, Figure 1As shown, the main arm 2 approaches the paper reel cylinder 14 under the action of the cylinder and presses on the bearing shell of the paper reel roller 7 to provide the necessary filling line pressure, so that the paper reel roller 7 does not jump during the rotation filling, the paper web does not wrinkle, the paper roll is tight and uniform, and the tightness is moderate, so that the paper reel roller 7 moves along the linear guide rail 6 while the roll diameter continues to increase. When the previous paper roll is about to reach the limited roll diameter, the auxiliary arm device 9 moves along the contour track of the auxiliary arm cam 3 under the action of the driving device 10, and takes the paper reel roller 7 to be replaced out of the paper storage slot 8, and moves along the contour track of the inclined cam 4 under the drive device 10 to guide the paper reel 7 to be replaced to move smoothly until the paper reel 7 to be replaced is tangent to the surface of the paper reel cylinder 14. At this time, the paper web between the auxiliary arm device 9 and the paper roll on the linear guide rail 6 is affected by the paper reel roller 7 to be replaced and the paper roll The paper cylinder 14 acts tangentially to straighten the paper. Simultaneously, the paper severing device 5 located between the auxiliary arm assembly 9 and the linear guide 6 activates, severing the paper web. The loaded sheet is then smoothly wound onto the reel 7 to be replaced, completing the reel replacement process instantly. At this point, the previous reel 7 on the linear guide 6 has finished reeling. The main arm 2, under the action of the pneumatic cylinder, pushes the paper roll out and quickly retracts to prepare for the next reel replacement. The main arm 2 then approaches the reel cylinder 14. The auxiliary arm assembly 9 continues to move downward, driven by the drive device 10. The reel 7, after the reel replacement, continues to move along the contour of the inclined cam 4 onto the linear guide 6. The main arm 2 then catches the reel 7, supporting the paper roll as it continues to grow along the linear guide 6. At this point, the auxiliary arm assembly 9, under the action of the drive device 10, returns to its initial position, awaiting the next reel replacement. In this embodiment, the operating timing of each moving component is precisely controlled by proximity switches. In this way, through the automatic paper picking movement of the auxiliary arm device 9 and the switching of the paper rolls by the paper breaking device 5, the automation of the entire roll changing process is realized, without the need for human participation, which greatly improves the efficiency and quality of roll changing and ensures continuous production of the device. In particular, the paper winding roller 7 is tangent to the paper winding cylinder 14, which increases the surface tension of the paper web when the paper breaking device 5 breaks the paper, effectively avoiding the possibility of uneven force on the bottom of the roller and paper damage when breaking the paper. In addition, in this embodiment, the initial position of the auxiliary arm device 9 is set at the lowest point of its movement path, that is, when the auxiliary arm device 9 is not working, it is in a natural static state and is not affected by the driving device 10. This setting makes the auxiliary arm device 9 not require power consumption when on standby, which is beneficial to saving energy. When entering the roll changing process, the driving device 10 starts to drive the auxiliary arm device 9 to move from the lowest point along the track of the auxiliary arm cam 3, accurately taking out the paper roll to be changed and completing the process of transporting and changing the roll. After the roll changing is completed, the auxiliary arm device 9 returns to the lowest initial position again and enters the standby state. This structural setting makes the movement of the auxiliary arm device 9 rotate with its hinge with the frame 1 as the center, rather than swinging back and forth between the paper storage slot 8 and the linear guide 6, so as to avoid the possibility of the auxiliary arm device 9 reversing and lifting the paper to interfere with the normal paper winding work of the paper roll on the linear guide 6.

[0023] In some embodiments, as Figure 2 As shown, to accurately cut the paper web during roll change, the paper cutting device 5 is fixedly mounted on the auxiliary arm device 9 and moves under the drive of the auxiliary arm device 9. Thus, by directly arranging the paper cutting device 5 on the auxiliary arm device 9 responsible for the roll change movement, it is ensured that the paper cutting device 5 always maintains an optimal relative position with the paper roll to be switched, thereby accurately controlling the position and timing of cutting the paper web during roll change, greatly improving the quality and accuracy of paper cutting.

[0024] In some embodiments, as Figure 3 As shown, in order to reduce the possibility of accidents such as the paper roller 7 tilting or sliding, the auxiliary arm device 9 includes an auxiliary arm body 91, a shift rod 92 and a connecting rod. The middle part of the connecting rod is connected to the auxiliary arm body 91, and the connecting rod has a shift rod 93 with a length greater than the shift rod 92 and a driven arm 94 set at an angle to the shift rod 93. The shift rod 93 is abutted against the auxiliary arm cam 3 through the driven arm 94, and forms a U-shaped structure with a front-to-back offset with the shift rod 92. The U-shaped structure is configured to be longer than the paper roll 7 and to be moved by the lever 93 when the auxiliary arm body 9 moves. In this embodiment, the front side of the auxiliary arm body 91 in the rotation direction is defined as the front side of the free end of the auxiliary arm body 91 .

[0025] In some embodiments, as Figure 2 and Figure 3 As shown, to accommodate paper rolls 7 of various shapes and sizes, a driven wheel 95 is provided on the end of the driven arm 94 opposite the shift lever 93. The driven wheel 95 abuts the auxiliary arm cam 3 against the driven arm 94. Thus, through the design of the driven arm 94 and the driven wheel 95, the shift lever 93 can rotate a certain angle under the drive of the auxiliary arm cam 3. The introduction of the driven wheel 95 prevents direct friction and wear between the driven arm 94 and the auxiliary arm cam 8. Furthermore, the driven wheel 95 provides a smooth moving surface, helping to ensure stable movement of the driven arm 94. This smooth movement is crucial for accurate paper removal and roll changing, ensuring precise removal of the paper roll 7.

[0026] In some embodiments, as Figure 1 As shown, for precise control and adjustment, the drive device 10 is a sprocket drive mechanism with an independent drive source. In this embodiment, the sprocket drive mechanism preferably uses a sprocket drive with an independent drive source, which can accurately control the operating timing and motion parameters of each sprocket and its connected moving parts, achieving precise adjustment and control of each roll changing step.

[0027] In some embodiments, as Figure 4 As shown, to accurately cut the paper web while saving space, the paper cutting device 5 includes a paper cutter 51, an air chamber 52, a piston 53, and a steel wire rope 54. Pulleys 55 are provided at both ends of the air chamber 52. The steel wire rope 54 is wound around the pulleys 55 and connected to the paper cutter 51. The piston 53 is located within the air chamber 52 and connected to the steel wire rope 54. Air pipe plugs 56 are provided at both ends of the air chamber 52 for connecting to an air source. During operation, air is fed into the air chamber 52 through the air pipe plugs 56, driving the piston 53 and steel wire rope 54 to move, thus driving the paper cutter 51 to accurately cut the paper. Compared to mechanical cutting, this pneumatic cutting method offers rapid response and precise cutting, while also being compact and significantly saving equipment space.

[0028] In some embodiments, as Figure 1 As shown, to improve the quality of roll changes, a glue spraying device 11 is also included. The glue spraying device 11 is arranged near the inclined cam 4 and is used to spray glue on the paper roll 7 during roll changes. During the roll change process, when the paper is cut from the old paper roll after filling and begins to be wound on the new paper roll 7, the glue spraying device 11 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 change, ensure that the paper is wound smoothly on the new roll, avoid paper falling off and slipping, and improve the success rate of roll changes.

[0029] In some embodiments, as Figure 1As shown, to further enhance the degree of automation, a tension detection device 12 is included. The tension detection device 12 is positioned on the loading track of the paper reel 14 and is used to detect the paper tension during the reeling process of the paper reel 7. The tension detection device 12 is connected to the paper breaking device 5 and the glue spraying device 11 for signal control. When the paper reel 7 is tangent to the paper reel 14, the tension detection device 12 detects that the paper tension exceeds a preset tension threshold, thereby controlling the paper breaking device 5 and the glue spraying device 11 to break the paper and spray glue. Thus, the introduction of the tension detection device 12 allows for real-time detection of the paper tension. Specifically, when the paper reel 7 is tangent to the paper reel 14, the paper between the paper reel 7 to be replaced and the previous paper roll is subjected to taut force, causing significant fluctuations in paper tension. When the paper tension fluctuation exceeds the preset tension threshold, the paper breaking device 5 and the glue spraying device 11, under the control of the tension detection device 12, begin to break the paper and spray glue, respectively, achieving precise paper breaking and reeling. In this embodiment, the specific value of the preset tension threshold can be set according to different actual paper types, which will not be described in detail here.

[0030] In some embodiments, as Figure 1 As shown, in order to protect the equipment and the paper reel 7, a shock-absorbing block 13 is also included. The shock-absorbing block 13 is arranged at the end of the linear guide 6 opposite to the paper reel cylinder 14, and is used to reduce the impact force of the paper reel 7 being pushed out of the linear guide 6 after the paper reel is fully filled.

[0031] The medium and low speed horizontal drum automatic roll changing paper winding machine provided in this embodiment has a structural design in which a paper storage groove for storing the paper roll to be replaced is provided on the inclined cam, and an auxiliary arm device that can move along the contour track of the auxiliary arm cam is provided, thereby realizing accurate removal of the paper roll to be replaced; the auxiliary arm device accurately introduces the removed paper roll to be replaced into the paper cutting device for paper web cutting, which not only greatly reduces the labor intensity of the operator, but also ensures the quality of paper cutting, avoids the problems of paper breakage and wrinkles that may be caused by manual paper cutting, and effectively improves product quality; cooperates with the paper cutting device to realize accurate switching of paper rolls, ensuring the smooth progress of the entire automatic roll changing process.

[0032] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0034] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are 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 will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A medium-low speed horizontal cylinder automatic roll-changing paper reeling machine, comprising a frame (1), a main arm (2), a secondary arm cam (3), an inclined cam (4), a paper cutting device (5), a linear guide rail (6), a paper reeling roller (7) and a paper reeling cylinder (14) arranged on the frame (1), characterized in that: The inclined cam (4) is provided with a paper storage slot (8) for storing the paper roll (7); the frame (1) is provided with a secondary arm device (9), and the secondary arm device (9) is configured to move along the contour track of the secondary arm cam (3) under the action of the driving device (10); when changing the roll, the secondary arm device (9) moves along the contour track of the secondary arm cam (3) to take out the paper roll (7) placed in the paper storage slot (8), and drives the paper roll (7) to move along the contour track of the inclined cam (4) and to reel in the paper roll cylinder (14). Tangent; one end of the linear guide rail (6) is arranged on the movement path of the auxiliary arm device (9) for supporting the paper reel (7) for filling the roll; the paper cutting device (5) is arranged on the movement path of the auxiliary arm device (9) and is located in front of the linear guide rail (6) for cutting the paper web when changing the roll; the main arm (2) is used to support the paper reel (7) for filling the roll located on the linear guide rail (6); after filling is completed, the main arm (2) pushes the paper reel (7) with the paper web cut off from the linear guide rail (6) under the action of the cylinder; The auxiliary arm device (9) comprises an auxiliary arm body (91), a stop rod (92) and a connecting rod. The middle portion of the connecting rod is hinged to the auxiliary arm body (91), and the connecting rod has a shift rod (93) longer than the stop rod (92) and a driven arm (94) arranged at an angle to the shift rod (93). The shift rod (93) abuts against the auxiliary arm cam (3) through the driven arm (94), and forms a U-shaped structure with a front-to-back offset with the stop rod (92). The invention also includes a tension detection device (12), which is arranged on the feeding track of the paper reeling cylinder (14) and is used to detect the paper tension during the reeling process. The tension detection device (12) is connected to the paper cutting device (5) and the glue spraying device (11) through signal control. When the paper reeling roller (7) and the paper reeling cylinder (14) are tangent to each other and the tension detection device (12) detects that the paper tension is greater than a preset tension threshold, the paper cutting device (5) and the glue spraying device (11) are controlled to perform paper cutting and glue spraying actions.

2. The medium and low speed horizontal drum automatic roll changing paper reeling machine according to claim 1 is characterized in that: The paper cutting device (5) is fixedly mounted on the auxiliary arm device (9) and moves under the drive of the auxiliary arm device (9).

3. The medium and low speed horizontal drum automatic roll changing paper reeling machine according to claim 2, 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 (3) via the driven wheel (95).

4. The medium and low speed horizontal drum automatic roll changing paper reeling machine according to claim 2, characterized in that: The driving device (10) is a sprocket transmission mechanism with an independent driving source.

5. The medium-low speed horizontal drum automatic roll-changing paper reeling machine according to claim 1 or 2, characterized in that: The paper cutting device (5) comprises a paper cutting knife (51), an air chamber (52), a piston (53) and a steel wire rope (54). Pulleys (55) are provided at both ends of the air chamber (52). The steel wire rope (54) is wound around the pulley (55) and connected to the paper cutting knife (51). The piston (53) is arranged in the air chamber (52) and connected to the steel wire rope (54). Air pipe plugs (56) are provided at both ends of the air chamber (52). The air pipe plugs (56) are used to connect to an air source.

6. The medium and low speed horizontal drum automatic roll changing paper reeling machine according to claim 1, characterized in that: It also includes a glue spraying device (11), which is arranged near the inclined cam (4) and is used to spray glue onto the paper roll (7) when changing the roll.

7. The medium and low speed horizontal drum automatic roll changing paper reeling machine according to claim 1, characterized in that: The invention also includes a shock absorbing block (13), which is arranged at one end of the linear guide rail (6) opposite to the paper reel cylinder (14) and is used to reduce the impact force of the paper reel roller (7) being pushed out from the linear guide rail (6) after the paper reel is fully filled.

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