Inner frame paper synchronous driving device

Abstract

An inner frame paper synchronous driving device comprises a wall plate, a paper tape inlet paper passing roller, a driving roller, a servo motor, a paper pressing roller, a paper tape buffering support, a paper tape outlet paper passing roller, a photoelectric switch and a controller. The wall plate is mounted on the main machine body of the packaging machine; the paper tape inlet paper passing roller is mounted on the wall plate; the driving roller is mounted on the wall plate and is arranged below the paper tape inlet paper passing roller; the servo motor is installed on the wall plate and used for providing power for the driving roller. The paper pressing roller is mounted on the wall plate and is arranged below the driving roller; the paper tape buffer bracket is mounted on the wall plate; the paper tape outlet paper passing roller is arranged on the wall plate and is arranged above the paper tape buffer bracket; and the photoelectric switch is arranged on the paper tape buffer bracket. The paper tape feeding device can adjust the running speed of a paper tape in real time, solves the problem of inner frame paper feeding synchronization when an inner frame paper bobbin paper replacing machine and a packaging machine are connected, can buffer and prestore the paper tape, further solves the problem of intermittent paper feeding caused by inner frame paper emptying, and improves the packaging efficiency of the packaging machine.

Description

Technical Field

[0001] This utility model relates to the field of paper feeding technology for auxiliary equipment of cigarette packaging machines, specifically, to an inner frame paper synchronous drive device. Background Technology

[0002] With the emergence of high-speed cigarette rolling and packaging equipment, the demand for cigarette paper is increasing. In the past, manual paper feeding could no longer meet production needs, so cigarette paper changing machines have emerged, and the inner frame paper changing machine is one of them.

[0003] When the inner frame paper tray changing machine is connected to the packaging machine, there is usually a problem of synchronization of the inner frame paper supply due to the difference between the paper belt running speed and the packaging machine speed.

[0004] Furthermore, when the packaging machine is full of small cigarette packs or has been stopped for an extended period, the inner frame paper needs to be emptied. This is because cigarette packs that are not emptied will not meet quality standards when sealed. Simultaneously with the cessation of inner frame paper supply, the inner frame paper needs to be cut. The section of paper before the cut needs to be emptied, while the section after the cut stops at a designated position, waiting for the next paper feeding action to begin. Therefore, the emptying of the inner frame paper can lead to intermittent paper feeding. Sudden acceleration or deceleration of the packaging machine can cause instability in the paper belt, thus affecting the production efficiency of the packaging machine. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a synchronous driving device for inner frame paper. This invention can adjust the running speed of the paper belt in real time, solve the problem of synchronous supply of inner frame paper when the inner frame paper tray changing machine and the packaging machine are connected, and can buffer and pre-store the paper belt, thereby solving the problem of intermittent paper supply when the inner frame paper is emptied, and improving the packaging efficiency of the packaging machine.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: an inner frame paper synchronous drive device, which is set between the paper changing machine and the packaging machine, including a wall plate, a paper tape inlet paper feed roller, a drive roller, a servo motor, a paper pressure roller, a paper tape buffer bracket, a paper tape outlet paper feed roller, a photoelectric switch, and a controller;

[0007] The wall panel is installed on the main body of the packaging machine and serves as a carrier for the drive unit.

[0008] The paper tape inlet roller is mounted on the wall panel to guide the paper tape unwound from the paper roll changer into the drive unit;

[0009] The drive roller is mounted on the wall panel and positioned below the paper belt inlet roller. It is used to press and cooperate with the pressure roller to drive the paper belt from the paper changer into the inner frame paper channel of the packaging machine.

[0010] The servo motor is mounted on the wall panel and connected to the drive roller to provide power to the drive roller, causing the drive roller to rotate.

[0011] The pressure roller is mounted on the wall panel and positioned below the drive roller. The pressure roller's vertical position is adjusted by an up-and-down adjustment mechanism mounted on the wall panel, allowing it to move closer to or further away from the drive roller.

[0012] The paper tape buffer bracket is installed on the wall panel to guide and buffer the paper tape driven by the drive roller and the pressure roller;

[0013] The paper tape exit roller is located on the wall panel and above the paper tape buffer bracket, used to guide the paper tape through into the inner frame paper channel of the packaging machine;

[0014] The photoelectric switch is mounted on the paper tape buffer bracket to detect the buffer position when the paper tape passes through the paper tape buffer bracket;

[0015] The controller is connected to the servo motor and the photoelectric switch signal respectively. The controller receives the detection signal from the photoelectric switch to control the running speed of the servo motor and adjusts the running speed of the paper belt in real time so that the servo motor runs synchronously with the paper feed roller of the inner frame of the packaging machine.

[0016] Based on the above, it also includes a paper tape inlet paper feed bracket and a paper tape outlet paper feed bracket;

[0017] The paper tape inlet paper feeder is located between the drive roller and the paper tape buffer support to guide the paper tape that passes between the pressure roller and the drive roller downstream.

[0018] The paper tape exit guide bracket is located between the paper tape buffer bracket and the paper tape exit guide roller. It is used to guide the paper tape from the paper tape buffer bracket to the paper tape exit guide roller, so that the paper tape wraps around the paper tape exit guide roller.

[0019] Based on the above, the paper tape buffer support includes an E-type fixing frame, two first straight guide bars, and two second straight guide bars. The E-type fixing frame is fixed to the wall panel and located below the paper tape exit roller. The two first straight guide bars are axially spaced apart from the drive roller and horizontally arranged along the tangential direction of the drive roller on the side of the E-type fixing frame facing away from the drive roller. The ends of the two first straight guide bars near the drive roller are fixed to the bottom frame of the E-type fixing frame. The two second straight guide bars are parallel to the two first straight guide bars and correspond one-to-one vertically. The ends of the two second straight guide bars near the drive roller are fixed to the upper part of the E-type fixing frame. On the frame, an arc-shaped guide is provided between the first and second straight guides that are corresponding to each other. The arc-shaped guide is in the same vertical plane as the first and second straight guides that are corresponding to each other. The open side of the arc-shaped guide faces the E-type fixing frame. There are first paper-passing gaps between the lower horizontal section of the arc-shaped guide and the first straight guide directly below it, and between the upper horizontal section of the arc-shaped guide and the second straight guide directly above it, for guiding the paper tape through. The photoelectric switch is set on the middle frame of the E-type fixing frame and emits a photoelectric detection signal towards the middle of the two arc-shaped guides.

[0020] Based on the above, the paper tape inlet paper feeding bracket includes a third straight guide bar and a guide plate. Several first fixing blocks are fixedly arranged at intervals on the wall plate between the drive roller and the E-type fixing frame. The third straight guide bar is horizontally arranged between the drive roller and the E-type fixing frame along the tangent of the drive roller and is fixedly installed on each of the first fixing blocks. The guide plate is horizontally arranged directly below the third straight guide bar and is fixedly installed on each of the first fixing blocks. The lower horizontal section of the third straight guide bar is at the same height as the lower horizontal section of the arc-shaped guide bar. The guide plate is at the same height as the first straight guide bar. The ends of the third straight guide bar and the guide plate near the drive roller are both located on the lower side of the drive roller. There is a second paper feeding gap between the third straight guide bar and the guide plate for guiding the paper tape through.

[0021] Based on the above, the paper tape exit paper feed bracket includes a second fixing block, which is fixed to the wall panel and located below the paper tape exit paper feed roller. The second fixing block is located above the E-type fixing frame and arranged close to the paper tape exit paper feed roller. Two second straight guide bars are installed at one end of the E-type fixing frame, each integrally formed with an upwardly curved first curved guide bar. The upper horizontal sections of the two arc-shaped guide bars are installed at one end of the E-type fixing frame, each integrally formed with an upwardly curved second curved guide bar. The two first curved guide bars and the two second curved guide bars are fixedly connected to the second fixing block. The upper ends of the two first curved guide bars and the two second curved guide bars extend vertically upward to the lower side of the paper tape exit paper feed roller. There is a third paper feed gap between the first curved guide bars and the second curved guide bars located on the same vertical plane for guiding the paper tape through.

[0022] Based on the above, the up-down adjustment mechanism includes an eccentric shaft and an adjustment cylinder. The eccentric shaft is rotatably mounted on the wall panel and located directly below the drive roller. The pressure roller is mounted on one end of the eccentric shaft. A swing rod perpendicular to the eccentric shaft is fixedly connected to the eccentric shaft. The adjustment cylinder is perpendicular to the eccentric shaft. One end of the adjustment cylinder is hinged to the wall panel, and the other end of the adjustment cylinder is hinged to the swing rod. The piston rod of the adjustment cylinder extends or retracts to drive the swing rod to swing. The swing rod drives the eccentric shaft to rotate, causing the pressure roller to swing up or down around the rotation center of the eccentric shaft.

[0023] Based on the above, the outer circumference of the paper pressing roller is a rubber layer, and the roller body and the central shaft are rotatably connected by a one-way bearing.

[0024] Based on the above, two paper tape baffles are also installed on the side of the bottom frame of the E-type fixing frame facing the drive roller. The paper tape baffles are parallel to the wall plate. The two paper tape baffles are arranged axially at intervals on the drive roller and their positions are adjusted along the axial direction of the drive roller by fastening and adjusting components. The two paper tape baffles are used to block the paper tape running in the second paper feeding gap on both sides.

[0025] Based on the above, the fastening and adjustment assembly includes fastening bolts. An adjustment side plate is integrally formed on one side of the paper tape baffle near the E-type fixed frame and is vertically arranged along the axial direction of the drive roller. An adjustment elongated hole is opened on the adjustment side plate along the axial direction of the drive roller. The fastening bolt passes through the adjustment elongated hole and is fixedly installed on the bottom frame of the E-type fixed frame. The adjustment side plate is pressed onto the bottom frame of the E-type fixed frame by the fastening bolts.

[0026] Based on the above, two axially spaced retaining rings are slidably fitted on both the paper tape inlet feed roller and the paper tape outlet feed roller, and set screws are provided on the retaining rings to fix their positions.

[0027] This invention has substantial features and advancements compared to existing technologies. Specifically, it uses a photoelectric switch to detect the buffer position of the paper tape as it passes the paper tape buffer bracket in real time. The controller then controls the running speed of the servo motor based on the detection signal from the photoelectric switch, adjusting the paper tape speed in real time to maintain a stable buffer position during paper tape operation. This ensures that the servo motor and the inner frame paper feed roller of the packaging machine operate synchronously, thus solving the problem of synchronized inner frame paper supply when the inner frame paper tray changer and the packaging machine are connected. At the same time, the paper tape buffer bracket can buffer and pre-store the paper tape, providing buffer amount for intermittent paper supply in the packaging machine, ensuring stable paper tape operation, and thus solving the problem of intermittent paper supply when the inner frame paper is emptied, improving the packaging efficiency of the packaging machine. Attached Figure Description

[0028] Figure 1 This is the axial view of the present invention. Figure 1 .

[0029] Figure 2 This is the axial view of the present invention. Figure 2 .

[0030] Figure 3 This is a front view of the present invention.

[0031] Figure 4 This is an axial view of the present invention in its working state. Figure 1 .

[0032] Figure 5 This is an axial view of the present invention in its working state. Figure 2 .

[0033] In the diagram: 1. Wall panel; 2. Paper tape inlet feed roller; 3. Drive roller; 4. Servo motor; 5. Pressure roller; 6. Paper tape outlet feed roller; 7. Photoelectric switch; 8. Stud; 9. Synchronous belt mechanism; 10. E-type fixing frame; 11. First straight guide bar; 12. Second straight guide bar; 13. Arc-shaped guide bar; 14. First paper feeding gap; 15. Third straight guide bar; 16. Guide plate; 17. First fixing block; 18. Second paper feeding gap; 19. Second fixing block; 20. First curved guide bar; 21. Second curved guide bar; 22. Third paper feeding gap; 23. Eccentric shaft; 24. Adjusting cylinder; 25. Swing rod; 26. Paper tape baffle; 27. Fastening bolt; 28. Adjusting side plate; 29. ​​Retaining ring; 30. Paper tape. Detailed Implementation

[0034] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0035] Example 1

[0036] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the inner frame paper synchronous drive device is located between the paper changing machine and the packaging machine, including wall plate 1, paper tape inlet paper feed roller 2, drive roller 3, servo motor 4, pressure roller 5, paper tape buffer bracket, paper tape outlet paper feed roller 6, photoelectric switch 7 and controller (not shown).

[0037] Wall panel 1 is installed on the lower right side of the main body of the packaging machine (relative to the operating position), 5 meters away from the paper changing machine. It is the link between the packaging machine and the paper changing machine and serves as the carrier of the drive device.

[0038] The paper tape inlet roller 2 is installed in the middle of the left side of the wall panel 1 to guide the paper tape 30 unwound from the paper roll changer into the drive unit.

[0039] The drive roller 3 is mounted on the wall plate 1 and positioned below the paper belt inlet paper roller 2. It is used to press and cooperate with the pressure roller 5 to drive the paper belt 30 from the paper changer into the inner frame paper channel of the packaging machine.

[0040] The servo motor 4 is mounted on the wall panel 1 and connected to the drive roller 3 for transmission, and is used to provide power to the drive roller 3 so that the drive roller 3 rotates.

[0041] The pressure roller 5 is mounted on the wall plate 1 and positioned below the drive roller 3. The pressure roller 5 is adjusted in vertical position by the vertical adjustment mechanism mounted on the wall plate 1, thereby moving closer to or further away from the drive roller 3.

[0042] The paper tape buffer bracket is installed on the wall panel 1 to guide and buffer the paper tape 30 driven by the drive roller 3 and the pressure roller 5;

[0043] The paper tape exit roller 6 is located on the wall plate 1 and above the paper tape buffer bracket, and is used to guide the paper tape 30 to transition into the inner frame paper channel of the packaging machine.

[0044] The photoelectric switch 7 is mounted on the paper tape buffer bracket and is used to detect the buffer position of the paper tape 30 when it passes through the paper tape buffer bracket;

[0045] The controller is connected to the servo motor 4 and the photoelectric switch 7 respectively. The controller receives the detection signal from the photoelectric switch 7 to control the running speed of the servo motor 4 and adjusts the running speed of the paper belt 30 in real time so that the servo motor 4 runs synchronously with the paper feed roller of the inner frame of the packaging machine.

[0046] Specifically, the wall panel 1 is fixedly installed on the front side of the main body of the packaging machine by several studs 8. The paper tape inlet guide roller 2, the drive roller 3, and the pressure roller 5 are all located on the left side of the front side of the wall panel 1. The drive roller 3 is located to the lower left of the paper tape inlet guide roller 2. The paper tape buffer bracket is located on the lower right side of the front side of the wall panel 1. The paper tape outlet guide roller 6 is located on the upper right side of the upper middle part of the front side of the wall panel 1 and is located to the upper left of the paper tape buffer bracket. The paper tape inlet guide roller 2 can increase the wrap angle of the paper tape 30 on the drive roller 3 to prevent slippage.

[0047] In this embodiment, the motor shaft of the servo motor 4 is connected to the drive roller 3 via a synchronous belt mechanism 9. In other embodiments, the synchronous belt mechanism 9 can be replaced by a chain drive mechanism, or the motor shaft of the servo motor 4 can be connected to the drive roller 3 via a coupling.

[0048] In this embodiment, a paper tape inlet paper threading bracket and a paper tape outlet paper threading bracket are also included;

[0049] The paper tape inlet paper feeder is set between the drive roller 3 and the paper tape buffer support, and is used to guide the paper tape 30 that passes through the pressure roller 5 and the drive roller 3 to run downstream.

[0050] The paper tape exit paper guide bracket is set between the paper tape buffer bracket and the paper tape exit paper guide roller 6. It is used to guide the paper tape 30 from the paper tape buffer bracket to the paper tape exit paper guide roller 6, so that the paper tape 30 is wrapped around the paper tape exit paper guide roller 6.

[0051] In this embodiment, the paper tape buffer support includes an E-shaped fixing frame 10, two first straight guide bars 11, and two second straight guide bars 12. The E-shaped fixing frame 10 is fixed on the wall panel 1 and located below the paper tape exit roller 6. The two first straight guide bars 11 are axially spaced at the drive roller 3 and horizontally arranged along the tangential direction of the drive roller 3 on the side of the E-shaped fixing frame 10 facing away from the drive roller 3. The ends of the two first straight guide bars 11 near the drive roller 3 are fixed to the bottom frame of the E-shaped fixing frame 10. The two second straight guide bars 12 are parallel to the two first straight guide bars 11 and correspond one-to-one vertically. The ends of the two second straight guide bars 12 near the drive roller 3 are fixed to the upper part of the E-shaped fixing frame 10. On the frame, an arc-shaped guide bar 13 is provided between the first straight guide bar 11 and the second straight guide bar 12, which are corresponding to each other. The arc-shaped guide bar 13 is in the same vertical plane as the first straight guide bar 11 and the second straight guide bar 12, and the open side of the arc-shaped guide bar 13 faces the E-type fixing frame 10. The lower horizontal section of the arc-shaped guide bar 13 and the first straight guide bar 11 directly below it, as well as the upper horizontal section of the arc-shaped guide bar 13 and the second straight guide bar 12 directly above it, both have a first paper-passing gap 14 for guiding the paper tape 30 through. The photoelectric switch 7 is provided on the middle frame of the E-type fixing frame 10 and emits a photoelectric detection signal towards the middle of the two arc-shaped guide bars 13.

[0052] In this embodiment, the paper tape inlet paper-passing bracket includes a third straight guide bar 15 and a guide plate 16. Several first fixing blocks 17 are fixedly arranged at intervals on the wall panel 1 between the drive roller 3 and the E-type fixing frame 10. The third straight guide bar 15 is horizontally arranged between the drive roller 3 and the E-type fixing frame 10 along the tangent of the drive roller 3 and is fixedly installed on each of the first fixing blocks 17. The guide plate 16 is horizontally arranged directly below the third straight guide bar 15 and is fixedly installed on each of the first fixing blocks 17. The lower horizontal section of the third straight guide bar 15 is at the same height as the lower horizontal section of the arc-shaped guide bar 13. The guide plate 16 is at the same height as the first straight guide bar 11. The ends of the third straight guide bar 15 and the guide plate 16 near the drive roller 3 are both arranged on the lower side of the drive roller 3. There is a second paper-passing gap 18 between the third straight guide bar 15 and the guide plate 16 for guiding the paper tape 30 through.

[0053] In this embodiment, the paper tape exit paper feed bracket includes a second fixing block 19, which is fixed on the wall panel 1 and located below the paper tape exit paper feed roller 6. The second fixing block 19 is located above the E-type fixing frame 10 and is arranged close to the paper tape exit paper feed roller 6. Two second straight guide bars 12 are installed at one end of the E-type fixing frame 10 and are integrally formed with an upwardly curved first curved guide bar 20. The upper horizontal sections of two arc-shaped guide bars 13 are installed at one end of the E-type fixing frame 10 and are integrally formed with an upwardly curved second curved guide bar 21. The two first curved guide bars 20 and the two second curved guide bars 21 are fixedly connected to the second fixing block 19. The upper ends of the two first curved guide bars 20 and the two second curved guide bars 21 extend vertically upward to the lower side of the paper tape exit paper feed roller 6. There is a third paper feed gap 22 between the first curved guide bars 20 and the second curved guide bars 21 located on the same vertical plane for guiding the paper tape 30 through.

[0054] In this embodiment, the up-down adjustment mechanism includes an eccentric shaft 23 and an adjustment cylinder 24. The eccentric shaft 23 is rotatably mounted on the wall plate 1 and located directly below the drive roller 3. The paper pressure roller 5 is mounted on one end of the eccentric shaft 23. A swing rod 25 perpendicular to the eccentric shaft 23 is fixedly connected to the eccentric shaft 23. The adjustment cylinder 24 is perpendicular to the eccentric shaft 23. One end of the adjustment cylinder 24 is hinged to the wall plate 1, and the other end of the adjustment cylinder 24 is hinged to the swing rod 25. When the piston rod of the adjustment cylinder 24 extends, it drives the swing rod 25 to swing down, and the swing rod 25 drives the eccentric shaft 23 to rotate clockwise. 3 drives the pressure roller 5 to move upward and closer to the drive roller 3. The pressure roller 5 and the drive roller 3 press together to pass through the paper tape 30. When the piston rod of the adjusting cylinder 24 retracts, the driving swing rod 25 swings upward. The swing rod 25 drives the eccentric shaft 23 to rotate counterclockwise. The eccentric shaft 23 drives the pressure roller 5 to move downward and away from the drive roller 3. A gap is generated between the pressure roller 5 and the drive roller 3, which facilitates the insertion of the paper tape 30. In other embodiments, it is exactly the opposite, that is, the piston rod of the adjusting cylinder 24 extends to make the pressure roller 5 move downward and away from the drive roller 3, and the piston rod of the adjusting cylinder 24 retracts to make the pressure roller 5 move upward and closer to the drive roller 3.

[0055] In this embodiment, the paper strip 30 is first manually threaded through the drive device from the paper changing machine and introduced into the inner frame paper channel of the packaging machine. The paper strip 30 is the inner frame paper of the cigarette box in a coil shape installed on the paper changing machine. The specific operation of manual paper threading is as follows: the piston rod of the adjusting cylinder 24 is controlled to retract, so that the pressure roller 5 moves down away from the drive roller 3, creating a gap between the pressure roller 5 and the drive roller 3. The paper strip 30 is released from the paper changing machine from left to right. The paper strip 30 is tilted to the upper right and wrapped around the upper right part of the paper strip inlet of the paper roller 2, and then wrapped to the lower left, so that the paper strip 30 is wrapped around the left side of the drive roller 3 and passes through the gap between the drive roller 3 and the pressure roller 5. 0 then extends to the left, passing through the second paper threading gap 18 of the paper threading bracket at the paper inlet and the first paper threading gap 14 on the lower side of the buffer bracket. The paper belt 30 then goes around the right side of the two arc-shaped guide bars 13 of the buffer bracket, and then passes through the first paper threading gap 14 on the upper side of the buffer bracket and the third paper threading gap 22 of the paper belt outlet paper threading bracket. The paper belt 30 then goes up and wraps around the upper right side of the paper belt outlet paper roller 6 and enters the inner frame paper channel of the packaging machine. The piston rod of the control adjustment cylinder 24 extends, causing the pressure roller 5 to move up and close to the drive roller 3. The pressure roller 5 and the drive roller 3 press together to pass through the paper belt 30 between them. This completes the manual paper threading and prepares for paper feeding.

[0056] The packaging machine starts working, and at the same time, the servo motor 4 is started. The servo motor 4 drives the drive roller 3 to rotate through the synchronous belt mechanism 9. The drive roller 3 and the pressure roller 5 pull the paper belt 30 through friction. The photoelectric switch 7 detects the buffer position of the paper belt 30 when it passes the paper belt buffer bracket in real time. The controller receives the signal from the photoelectric switch 7 to control the running speed of the servo motor 4 and adjusts the running speed of the paper belt 30 in real time to keep the buffer position of the paper belt 30 stable during operation. This keeps the servo motor 4 and the inner frame paper feed roller of the packaging machine running synchronously, effectively solving the problem of synchronous supply of inner frame paper when the inner frame paper tray changer and the packaging machine are connected. Moreover, when the packaging machine is full of small cigarette packs or has been stopped for a long time, the inner frame paper needs to be emptied. Emptying the inner frame paper will cause intermittent paper supply problems. Due to the setting of the paper belt buffer bracket, the paper belt 30 can be buffered and pre-stored on the right side of the two arc-shaped guide bars 13 of the paper belt buffer bracket. The buffer amount of the paper belt 30 is determined by the paper speed and the inertia of the servo motor 4. The pre-stored amount of the paper belt 30 is controlled by setting the detection range of the photoelectric switch 7. When the packaging machine needs inner frame paper, it starts pulling paper. The photoelectric switch 7 detects that the buffer pre-stored amount of paper tape 30 is decreasing, and the controller controls the servo motor 4 to start rotating, running synchronously with the speed of paper tape 30. If the packaging machine is not fast enough when it increases its speed, the buffered paper tape 30 will supply the paper. When the packaging machine stops in an emergency, the extra paper tape 30 pulled by the servo motor 4 due to inertia will be stored on the right side of the two arc-shaped guide bars 13 of the paper tape buffer bracket, thus ensuring the stable operation of paper tape 30.

[0057] The controller is a PLC or microcontroller, which is a conventional technology. The signal control involved is also a conventional control technology, and no new computer programs are involved.

[0058] Example 2

[0059] Unlike Embodiment 1, the outer circumference of the pressure roller 5 is made of rubber, and the roller body of the pressure roller 5 is rotatably connected to the central shaft via a one-way bearing. The rubber layer increases the friction between the pressure roller 5 and the paper belt 30, and the one-way bearing only allows the pressure roller 5 to rotate in the direction of feeding the paper belt 30, preventing the paper belt 30 from retracting.

[0060] Example 3

[0061] Unlike Embodiment 1, the bottom frame of the E-type fixing frame 10 is also equipped with two paper strip baffles 26 on the side facing the drive roller 3. The paper strip baffles 26 are parallel to the wall plate 1. The two paper strip baffles 26 are arranged axially at intervals on the drive roller 3 and their positions are adjusted along the axial direction of the drive roller 3 by fastening and adjusting components. The two paper strip baffles 26 are used to block the paper strip running in the second paper feeding gap 18 on both sides.

[0062] The fastening and adjustment assembly includes a fastening bolt 27. The paper tape baffle 26 has an integrally formed adjustment side plate 28 on one side near the E-type fixing frame 10, which is vertically arranged along the axis of the drive roller 3. The adjustment side plate 28 has an adjustment elongated hole along the axis of the drive roller 3. The fastening bolt 27 passes through the adjustment elongated hole and is fixedly installed on the bottom frame of the E-type fixing frame 10. The adjustment side plate 28 is pressed onto the bottom frame of the E-type fixing frame 10 by the fastening bolt 27.

[0063] Both the paper tape inlet guide roller 2 and the paper tape outlet guide roller 6 are slidably fitted with two axially spaced retaining rings 29, and the retaining rings 29 are provided with set screws for fixing the position of the retaining rings 29.

[0064] By adjusting the position of the retaining ring 29 or the paper strip baffle 26, the center of the paper strip 30 is aligned with the center of the paper of the packaging machine, thereby preventing the paper strip 30 from deviating.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. An inner frame paper synchronous drive device, installed between the paper changing machine and the packaging machine, characterized in that: It includes wall panels, paper tape inlet feed rollers, drive rollers, servo motors, pressure rollers, paper tape buffer supports, paper tape outlet feed rollers, photoelectric switches, and controllers; The wall panel is installed on the main body of the packaging machine and serves as a carrier for the drive unit. The paper tape inlet roller is mounted on the wall panel to guide the paper tape unwound from the paper roll changer into the drive unit; The drive roller is mounted on the wall panel and positioned below the paper belt inlet roller. It is used to press and cooperate with the pressure roller to drive the paper belt from the paper changer into the inner frame paper channel of the packaging machine. The servo motor is mounted on the wall panel and connected to the drive roller to provide power to the drive roller, causing the drive roller to rotate. The pressure roller is mounted on the wall panel and positioned below the drive roller. The pressure roller's vertical position is adjusted by an up-and-down adjustment mechanism mounted on the wall panel, allowing it to move closer to or further away from the drive roller. The paper tape buffer bracket is installed on the wall panel to guide and buffer the paper tape driven by the drive roller and the pressure roller; The paper tape exit roller is located on the wall panel and above the paper tape buffer bracket, used to guide the paper tape through into the inner frame paper channel of the packaging machine; The photoelectric switch is mounted on the paper tape buffer bracket to detect the buffer position when the paper tape passes through the paper tape buffer bracket; The controller is connected to the servo motor and the photoelectric switch signal respectively. The controller receives the detection signal from the photoelectric switch to control the running speed of the servo motor and adjusts the running speed of the paper belt in real time so that the servo motor runs synchronously with the paper feed roller of the inner frame of the packaging machine.

2. The inner frame paper synchronous drive device according to claim 1, characterized in that: It also includes a paper tape inlet paper feeder and a paper tape outlet paper feeder; The paper tape inlet paper feeder is located between the drive roller and the paper tape buffer support to guide the paper tape that passes between the pressure roller and the drive roller downstream. The paper tape exit guide bracket is located between the paper tape buffer bracket and the paper tape exit guide roller. It is used to guide the paper tape from the paper tape buffer bracket to the paper tape exit guide roller, so that the paper tape wraps around the paper tape exit guide roller.

3. The inner frame paper synchronous drive device according to claim 2, characterized in that: The paper tape buffer support includes an E-type fixing frame, two first straight guide bars, and two second straight guide bars. The E-type fixing frame is fixed to the wall panel and located below the paper tape exit roller. The two first straight guide bars are axially spaced and horizontally arranged along the tangential direction of the drive roller on the side of the E-type fixing frame facing away from the drive roller. The ends of the two first straight guide bars near the drive roller are fixed to the bottom frame of the E-type fixing frame. The two second straight guide bars are parallel to the two first straight guide bars and correspond one-to-one vertically. The ends of the two second straight guide bars near the drive roller are fixed to the upper frame of the E-type fixing frame. An arc-shaped guide bar is provided between the first and second straight guide bars, which are corresponding to each other. The arc-shaped guide bar is in the same vertical plane as the first and second straight guide bars, and the open side of the arc-shaped guide bar faces the E-type fixing frame. The lower horizontal section of the arc-shaped guide bar has a first paper-passing gap between it and the first straight guide bar directly below it, and the upper horizontal section of the arc-shaped guide bar has a first paper-passing gap between it and the second straight guide bar directly above it. The photoelectric switch is set on the middle frame of the E-type fixing frame and emits a photoelectric detection signal towards the middle of the two arc-shaped guide bars.

4. The inner frame paper synchronous drive device according to claim 3, characterized in that: The paper tape inlet paper feed bracket includes a third straight guide bar and a guide plate. Several first fixing blocks are fixedly arranged at intervals on the wall panel between the drive roller and the E-type fixing frame. The third straight guide bar is horizontally arranged tangentially between the drive roller and the E-type fixing frame and is fixedly installed on each of the first fixing blocks. The guide plate is horizontally arranged directly below the third straight guide bar and is fixedly installed on each of the first fixing blocks. The lower horizontal section of the third straight guide bar is at the same height as the arc-shaped guide bar, and the guide plate is at the same height as the first straight guide bar. The ends of the third straight guide bar and the guide plate near the drive roller are both located on the lower side of the drive roller. There is a second paper feed gap between the third straight guide bar and the guide plate for guiding the paper tape through.

5. The inner frame paper synchronous drive device according to claim 3, characterized in that: The paper tape exit paper feed bracket includes a second fixing block, which is fixed to the wall panel and located below the paper tape exit paper feed roller. The second fixing block is located above the E-type fixing frame and close to the paper tape exit paper feed roller. Two second straight guide bars are installed at one end of the E-type fixing frame, each integrally formed with an upwardly curved first curved guide bar. The upper horizontal sections of two arc-shaped guide bars are installed at one end of the E-type fixing frame, each integrally formed with an upwardly curved second curved guide bar. The two first curved guide bars and the two second curved guide bars are fixedly connected to the second fixing block. The upper ends of the two first curved guide bars and the two second curved guide bars extend vertically upward to the lower side of the paper tape exit paper feed roller. There is a third paper feed gap between the first curved guide bars and the second curved guide bars located on the same vertical plane for guiding the paper tape through.

6. The inner frame paper synchronous drive device according to claim 1, characterized in that: The up-down adjustment mechanism includes an eccentric shaft and an adjusting cylinder. The eccentric shaft is rotatably mounted on the wall panel and located directly below the drive roller. The pressure roller is mounted on one end of the eccentric shaft. A swing rod perpendicular to the eccentric shaft is fixedly connected to the eccentric shaft. The adjusting cylinder is perpendicular to the eccentric shaft. One end of the adjusting cylinder is hinged to the wall panel, and the other end of the adjusting cylinder is hinged to the swing rod. The piston rod of the adjusting cylinder extends or retracts to drive the swing rod to swing. The swing rod drives the eccentric shaft to rotate, causing the pressure roller to swing up or down around the rotation center of the eccentric shaft.

7. The inner frame paper synchronous drive device according to claim 1, characterized in that: The outer circumference of the paper pressure roller is made of rubber, and the roller body is rotatably connected to the central shaft through a one-way bearing.

8. The inner frame paper synchronous drive device according to claim 4, characterized in that: Two paper tape baffles are also installed on the side of the bottom frame of the E-type fixed frame facing the drive roller. The paper tape baffles are parallel to the wall plate. The two paper tape baffles are arranged axially at intervals on the drive roller and their positions are adjusted along the axial direction of the drive roller by fastening and adjusting components. The two paper tape baffles are used to block the paper tape running in the second paper feeding gap on both sides.

9. The inner frame paper synchronous drive device according to claim 4, characterized in that: The fastening and adjustment assembly includes fastening bolts. The paper tape baffle has an integrally formed adjustment side plate on one side near the E-type fixed frame, which is vertically arranged along the axis of the drive roller. The adjustment side plate has an adjustment elongated hole along the axis of the drive roller. The fastening bolt passes through the adjustment elongated hole and is fixedly installed on the bottom frame of the E-type fixed frame. The adjustment side plate is pressed against the bottom frame of the E-type fixed frame by the fastening bolts.

10. The inner frame paper synchronous drive device according to any one of claims 1-9, characterized in that: Both the paper tape inlet and the paper tape outlet rollers have two axially spaced retaining rings that slide on them, and the retaining rings are equipped with set screws to fix their positions.

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