Glue-free roll changing mechanism of slitting rewinding machine

Abstract

The utility model discloses a glue-free roll changing mechanism of a slitting rewinding machine, which comprises a rack and winding rollers used for winding finished roll materials, a wheel disc capable of rotating in an indexing manner, an upper swing arm and a lower swing arm are mounted on the rack, the winding rollers are circumferentially and uniformly distributed on the wheel disc, and the wheel disc rotates to enable the winding rollers to pass between the upper swing arm and the lower swing arm one by one in a stop manner. The swing arm end of the upper swing arm and the swing end of the lower swing arm are driven by respective air cylinders to achieve opening and closing actions, a cutter transversely moving left and right is installed at the swing end of the upper swing arm, a dead knife corresponding to the cutter is arranged on the lower swing arm, and the dead knife is rotatably installed at the swing end of the lower swing arm through a rotating mechanism. And a compression roller capable of moving up and down and an insertion plate capable of moving up and down are arranged above the upper swing arm corresponding to the winding roller. In this way, the technical effect of glue-free roll changing is achieved.

Description

Technical Field

[0001] This utility model relates to the field of slitting machines, specifically to a glue-free roll changing mechanism for a slitting and rewinding machine. Background Technology

[0002] In the process of slitting self-adhesive rolls, the slitting machine cuts the entire self-adhesive roll into several smaller finished self-adhesive rolls. After the finished rolls are wound up, the machine needs to be stopped for manual roll changing. During the roll changing process, the roll roller of the finished roll needs to be removed and a new roll roller installed. The roll roller is generally an expansion shaft. The self-adhesive rolls that are conveyed need to be coated with glue at the ends so that the slit rolls can be wound onto the new roll roller paper tube after being output. Only then can the roll roller stably achieve the winding work. However, the glue application or gluing operation needs to be done manually and is very complicated and time-consuming, resulting in long production downtime and large glue consumption. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this utility model is to provide a glue-free roll changing mechanism for a slitting and rewinding machine that is both glue-free and highly efficient, thereby improving production efficiency.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a glue-free roll changing mechanism for a slitting and rewinding machine, comprising a frame and rolls for winding finished rolls. The frame is equipped with a rotatable indexing disc, an upper swing arm, and a lower swing arm. The rolls are evenly distributed around the circumference of the disc. The rotation of the disc causes each roll to pass intermittently between the upper and lower swing arms. The swing arm end of the upper swing arm and the swing end of the lower swing arm are driven by their respective cylinders to achieve opening and closing actions. The swing end of the upper swing arm is equipped with a left-right lateral cutting blade. The lower swing arm is provided with a bottom blade corresponding to the cutting blade. The bottom blade is rotatably mounted on the swing end of the lower swing arm through a rotating mechanism. A vertically movable pressure roller and a vertically movable insert plate are installed above the rolls on the upper swing arm.

[0005] The rotating mechanism includes a first sprocket mounted on both sides of the lower swing arm end, a bottom blade connected to the sprocket and rotating synchronously with the first sprocket, the bottom blade having an "L" shaped cross-section, a first servo motor also being mounted on the lower swing arm, the output shaft of the first servo motor being mounted on a second sprocket, and the first sprocket and the second sprocket being connected by a chain drive.

[0006] The upper swing arm is equipped with a pressure roller cylinder and an insert plate cylinder. The piston rod of the pressure roller cylinder is driven to a rotatable pressure roller, and the piston rod of the insert plate cylinder is driven to an insert plate. A miniature bearing is mounted on the end of the insert plate.

[0007] The upper swing arm is also equipped with a linear motion module, and the cutter is connected to the slide of the linear motion module.

[0008] The wheel is driven by a second servo motor.

[0009] The beneficial effects of this utility model are as follows: the rewinding roller, after completion of winding, moves out from the open state of the upper and lower swing arms through the rotation of the wheel disc, while the new rewinding roller also rotates to the space between the upper and lower swing arms. At this time, the upper and lower swing arms swing and close respectively. When winding begins, the end of the roll will pass around the new rewinding roller and pass between the bottom knife and the cutter. The bottom knife rotates to the corresponding cutting position through the rotating mechanism. At this time, the pressure roller presses down to press the roll tightly onto the rewinding roller. After the bottom knife positions and holds the roll, it is cut laterally by the cutter. Then, the insert plate moves down to press the cut end of the roll onto the lower rewinding roller wall and winds it onto the rewinding roller through friction. This achieves the technical effect of glue-free roll changing.

[0010] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0011] Figure 1 This is a structural diagram of the roll-changing state according to a specific embodiment of the present invention;

[0012] Figure 2 This is a structural diagram of the cut-off state in a specific embodiment of this utility model;

[0013] Figure 3 This is a structural diagram of the cut-and-joint state in a specific embodiment of the present invention;

[0014] Figure 4 for Figure 3 A magnified view of A in the middle.

[0015] In the diagram, 1 is a wheel; 2 is an upper swing arm; 3 is a lower swing arm; 4 is a roller; 5 is a cylinder; 7 is a bottom knife; 8 is a pressure roller; 9 is a rotating mechanism; 10 is an insert plate; 91 is a first sprocket; 92 is a second sprocket; 93 is a servo motor; 20 is a miniature bearing; 30 is a pressure roller cylinder; 40 is an insert plate cylinder; 50 is a linear motion module; and 501 is a third servo motor. Detailed Implementation

[0016] The present invention will be described in detail below through embodiments, which are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention.

[0017] like Figure 1 — Figure 4As shown, this embodiment discloses a glue-free roll changing mechanism for a slitting and rewinding machine, including a frame and a roll 4 for winding finished rolls. A paper tube is disposed on the roll 4. A rotary indexing disc 1, an upper swing arm 2, and a lower swing arm 3 are installed on the frame. The rolls 4 are evenly distributed around the disc 1. The rotation of the disc 1 causes the four rolls 4 to pass between the upper swing arm 2 and the lower swing arm 3 one after another. The swing arm end of the upper swing arm 2 and the swing end of the lower swing arm 3 are driven by their respective cylinders 5 to achieve opening and closing actions. A cutter 6 that moves horizontally left and right is installed on the swing end of the upper swing arm 2. A bottom cutter 7 corresponding to the cutter 6 is provided on the lower swing arm 3. The bottom cutter 7 is rotatably mounted on the swing end of the lower swing arm 3 through a rotating mechanism 9. A pressure roller 8 that can move up and down and a plate 10 that can move up and down are installed above the roll 4 corresponding to the upper swing arm 2.

[0018] The rotating mechanism 9 includes first sprockets 91 mounted on both sides of the lower swing arm 3. A bottom blade 7 is connected to the sprockets and rotates synchronously with the first sprockets 91. The bottom blade 7 has an "L"-shaped cross-section. A first servo motor 93 is also mounted on the lower swing arm 3. A second sprocket 92 is mounted on the output shaft of the first servo motor 93. The first sprockets 91 and the second sprockets 92 are connected by a chain 94. This allows the bottom blade to rotate and swing at the end of the lower swing arm 3. When cutting the rolled material, the bottom blade 7 rotates and extends; when not in use, it retracts to clear the paper path.

[0019] The upper swing arm 2 is equipped with a pressure roller cylinder 30 and an insert plate cylinder 40. The piston rod end of the pressure roller cylinder 30 is driven to connect a rotatable pressure roller 8, and the piston rod of the insert plate cylinder 40 is driven to connect an insert plate 10. A miniature bearing 20 is mounted on the end of the insert plate 10. In this way, during the pressing process of the insert plate 10, the end of the rolled material is brought into close contact with the roll on the roll 4 through the miniature bearing 20. This allows for greater friction between the roll on the roll 4 and the rolled material, thereby winding the material onto the roll 4 and achieving glue-free splicing.

[0020] The upper swing arm 2 is also equipped with a linear motion module 50. The cutter 6 is connected to the slide of the linear motion module 50. The structure of the linear motion module 50 includes a guide rail. The slide is mounted on the guide rail and slides. A belt is arranged around the guide rail. The slide is connected to the belt. A third servo motor 501 is installed on the side of the guide rail. The third servo motor 501 drives the belt drive, so that the cutter 6 can move laterally left and right.

[0021] The wheel 1 is driven by the second servo motor, and the rollers 4 on the wheel 1 are also driven by their respective motors.

[0022] Using the above technical solution, the rewinding roller 4, after completing the winding, moves out from the open state of the upper swing arm 2 and the lower swing arm 3 by rotating the wheel 1. At the same time, the new rewinding roller 4 will also rotate to the space between the upper swing arm 2 and the lower swing arm 3. At this time, the upper swing arm 2 and the lower swing arm 3 swing and close respectively, that is, the swing end of the upper swing arm 2 and the swing end of the lower swing arm 3 are close to each other. When the winding begins, the end of the roll will pass around the new rewinding roller 4 and pass between the bottom knife 7 and the cutter 6. The bottom knife 7 is rotated to the corresponding cutting position by the rotating mechanism 9. At this time, the pressure roller 8 presses down to press the roll tightly onto the rewinding roller 4. After the bottom knife 7 positions and holds the roll, the linear motion module drives the cutter 6 to cut the roll laterally. Then, the insert plate 10 moves down to press the cut end of the roll onto the peripheral wall of the lower rewinding roller 4 and wraps around the rewinding roller 4 by friction. After the bottom knife 7 completes the cutting of the roll with the cutter 6, it is retracted by rotating the rotating mechanism 9 to clear the paper path. This achieves the technical effect of glue-free roll changing.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A glue-free roll changing mechanism for a slitting and rewinding machine, comprising a frame and rolls for winding finished rolls, characterized in that: The frame is equipped with a rotatable indexing disc, an upper swing arm, and a lower swing arm. The rollers are evenly distributed around the circumference of the disc. The rotation of the disc causes each roller to pass between the upper and lower swing arms in a stop-and-go manner. The swing arm end of the upper swing arm and the swing end of the lower swing arm are driven by their respective cylinders to achieve opening and closing actions. The swing end of the upper swing arm is equipped with a cutter that moves laterally from left to right. The lower swing arm is equipped with a bottom cutter corresponding to the cutter. The bottom cutter is rotatably mounted on the swing end of the lower swing arm through a rotating mechanism. Above the rollers on the upper swing arm, a pressure roller that can move up and down and a plate that can move up and down are installed.

2. The glue-free roll changing mechanism of the slitting and rewinding machine according to claim 1, characterized in that: The rotating mechanism includes a first sprocket mounted on both sides of the lower swing arm end, a bottom blade connected to the sprocket and rotating synchronously with the first sprocket, the bottom blade having an "L" shaped cross-section, a first servo motor also being mounted on the lower swing arm, the output shaft of the first servo motor being mounted on a second sprocket, and the first sprocket and the second sprocket being connected by a chain drive.

3. The glue-free roll changing mechanism of the slitting and rewinding machine according to claim 1, characterized in that: The upper swing arm is equipped with a pressure roller cylinder and an insert plate cylinder. The piston rod of the pressure roller cylinder is driven to a rotatable pressure roller, and the piston rod of the insert plate cylinder is driven to an insert plate. A miniature bearing is mounted on the end of the insert plate.

4. The glue-free roll changing mechanism of the slitting and rewinding machine according to claim 1, characterized in that: The upper swing arm is also equipped with a linear motion module, and the cutter is connected to the slide of the linear motion module.

5. The glue-free roll changing mechanism of the slitting and rewinding machine according to claim 1, characterized in that: The wheel is driven by a second servo motor.

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