Paper receiving device and rewinding machine

Abstract

The invention belongs to the technical field of rewinding machines, and relates to a paper receiving device and a rewinder, the paper receiving device comprises a workbench, an unwinding mechanism, a paper pulling head mechanism, a tail end limiting mechanism, an automatic adhesive tape pasting machine and a straightening mechanism, the paper pulling head mechanism comprises a support, a connecting shaft, a rotating frame and an air exhaust box, the support is fixed on the workbench, and the rotating frame is fixed on the workbench; one end of the rotating frame is rotationally connected with the top end of the support through a connecting shaft, the air exhaust box is installed on the rotating frame, and a through hole is formed in one side of the air exhaust box; the tail end limiting mechanism comprises a base, a torsional spring and a pressing rod. The automatic adhesive tape sticking machine is used for sticking an adhesive tape to a seam of the paper; the straightening mechanism comprises a plurality of paper passing roll shafts. When the new paper roll falls down, the air exhaust box rotates to the position with the same height as the drooping paper head of the new paper roll, the air exhaust box is attached to the paper head, meanwhile, the rotating frame continues to rotate downwards and drives the paper head to move downwards until the paper head is parallel to the surface of the working table and is attached to the surface of the working table, and then the paper head is pulled to advance to the position under the automatic adhesive tape pasting machine for pasting.

Description

Technical Field

[0001] The present invention relates to the technical field of rewinding machines, and in particular to a paper splicing device and a rewinding machine. Background Art

[0002] In the paper manufacturing process, the diameter of the newly manufactured paper roll is relatively large, and the paper needs to be divided into smaller rolls. In the process of dividing the paper, a rewinder will be used. When a new paper roll is cut and rewound on the rewinder until the paper is consumed, when the next new paper roll is rewound, it is often necessary to leave the tail of the previous roll on the machine, and then pull the head of the next new paper roll over to connect with the tail of the previous roll to continue the rewinding operation. In the prior art, when doing the joint paper connection, most of the time, manpower is used to tear the head of the new new paper roll and pull it over to stick it to the tail of the machine. The widest width of modern paper machines exceeds 10 meters. For a paper roll with a width of 10 meters, it usually takes multiple people to pull the head of the paper to ensure that the paper is flat, wrinkle-free and aligned. The entire roll changing and splicing time is relatively long, so the efficiency of changing paper rolls and splicing often restricts the production capacity of the paper machine and becomes the production capacity bottleneck of the entire production line. The roll changing time of the rewinder is one of the main factors affecting the production efficiency of the rewinder. Summary of the invention

[0003] The technical problem to be solved by the present invention is: in order to solve the problem of difficulty in joining paper when a rewinder changes rolls, the present invention provides a paper joining device and a rewinder to solve the above problem.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a paper splicing device and a rewinding machine, including a workbench and a rewinding mechanism, the rewinding mechanism is fixed to the workbench, the new paper roll is installed on the rewinding mechanism, and also includes a paper pulling head mechanism, a tail end limiting mechanism, an automatic tape sticking machine and a straightening mechanism, the paper pulling head mechanism includes a bracket, a connecting shaft, a rotating frame and an air suction box, the bracket is fixed to the workbench, one end of the rotating frame is rotatably connected to the top end of the bracket through the connecting shaft, the air suction box is installed on the rotating frame, and one end of the air suction box A through hole is opened on the side, and the through hole on the vacuum box can fit with the paper to adsorb the paper; the tail end limiting mechanism includes a base, a torsion spring and a pressure rod, one end of the pressure rod is rotatably connected to the base, and the two ends of the torsion spring are fixedly connected to the pressure rod and the base respectively, and the torsion spring is used to drive the pressure rod to rotate downward, and the paper passes from under the pressure rod; the automatic tape sticking machine is used to stick the tape to the seam at the end of the paper; the straightening mechanism is arranged in front of the unwinding mechanism to tighten the paper after the new paper roll is unfolded, and the straightening mechanism includes multiple paper feeding rollers.

[0005] Preferably, the paper pulling head mechanism also includes a guide rod, a screw rod, a rod seat, a slider and a transmission motor, the screw rod and the guide rod are parallel to each other and fixed on the rod seat, the rod seat is fixed on the side of the workbench, the transmission motor is fixed on the rod seat and the output shaft of the transmission motor is coaxially fixedly connected with the screw rod, the slider is slidably mounted on the guide rod and is threadedly connected to the screw rod, the bracket is fixed on the slider, and the transmission motor drives the slider to move horizontally along the guide rod through the screw rod.

[0006] Preferably, a worm gear mechanism and a worm motor are also fixed to the top of the bracket, the worm wheel of the worm gear mechanism is coaxially fixedly connected to the connecting shaft, the worm of the worm gear mechanism is coaxially fixedly connected to the output shaft of the worm motor, and the worm motor drives the rotating frame and the vacuum box to rotate around the connecting shaft through the worm gear mechanism.

[0007] Preferably, a support plate is fixed on the rotating frame, and a sliding rod is vertically fixed on the vacuum box. The sliding rod is vertically slidably connected to the support plate. A telescopic cylinder is also fixed on the support plate. The piston rod of the telescopic cylinder passes through the support plate and is fixedly connected to the back side of the vacuum box. The telescopic cylinder is used to drive the vacuum box closer to or away from the support plate.

[0008] Preferably, an elastic limit plate is installed on the lower side of the top end of the pressure rod, and the elastic limit plate is slidably connected to the pressure rod through a push rod, and a spring is provided on the push rod, and both ends of the spring are respectively abutted against the elastic limit plate and the pressure rod, and the paper can pass from under the elastic limit plate and abut against the elastic limit plate; a paper pressing boss is also fixed to a position below the elastic limit plate on the workbench, and the top of the paper pressing boss is an upwardly protruding arc surface, and the side of the paper pressing boss facing the paper pulling head mechanism is a concave arc surface, and when the pressure rod is rotated downward to the paper pressing boss, the elastic limit plate can make the paper fit with the concave arc surface of the paper pressing boss and make the tail end of the paper flat on the surface of the workbench.

[0009] Preferably, the automatic tape applying machine is mounted above the workbench via an electric telescopic rod, and the electric telescopic rod is used to drive the automatic tape applying machine to move closer to or away from the paper.

[0010] A rewinding machine comprises the above-mentioned paper splicing device, and also comprises: a reeling machine, wherein the reeling machine is arranged at the rear side of the straightening mechanism along the paper advancing direction, and the reeling machine is used to reel the paper conveyed by the unwinding mechanism.

[0011] The beneficial effects of the present invention are as follows: a paper head pulling mechanism is provided, and after a new paper roll is installed on the unwinding mechanism, the paper head of the new paper roll is opened, and then the worm motor drives the vacuum box to rotate to a position with the same height as the paper head hanging from the new paper roll through the rotating frame, and then the transmission motor drives the slider and the vacuum box to move toward the new paper roll through the screw rod, so that the vacuum box and the paper head are fitted, and then the vacuum box is sucked to a negative pressure state through the air pump, at which time the paper head is sucked by the vacuum box, and then the unwinding mechanism starts to rotate slowly to transport the paper, and at the same time the rotating frame continues to rotate downward, and drives the paper head to move downward until it is parallel to and against the surface of the workbench, and then the transmission motor drives the slider and the vacuum box to move in the opposite direction through the screw rod, so that the vacuum box is away from the new paper roll, and then the paper head is pulled forward to the bottom of the automatic tape sticking machine, and the paper head is connected with the tail end of the previous roll of paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a schematic diagram of the overall structure of a paper splicing device and a rewinding machine of the present invention; Figure 2 It is a schematic diagram of the working state of a paper splicing device and a rewinding machine of the present invention; Figure 3 It is a structural schematic diagram of a paper splicing device and a support plate of a rewinding machine of the present invention; Figure 4 It is a structural schematic diagram of an elastic limiting piece of a paper splicing device and a rewinding machine of the present invention; Figure 5 It is a structural schematic diagram of a paper splicing device and an automatic tape sticking machine of a rewinding machine of the present invention; Figure 6 The invention discloses a paper splicing device and an air extraction box of a rewinding machine.

[0014] 1. The paper roll is rolled up and rolled up. 2. The paper roll is rolled up and rolled up. 3. The paper roll is rolled up and rolled up. 4. The paper roll is rolled up and rolled up. 5. The paper roll is rolled up and rolled up. 6. The paper roll is rolled up and rolled up. 7. The paper roll is rolled up and rolled up. 8. The paper roll is rolled up and rolled up. DETAILED DESCRIPTION

[0015] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0016] like Figures 1 to 6 As shown, the present invention provides an embodiment of a paper splicing device and a rewinding machine, including a workbench 1 and a rewinding mechanism 2, the rewinding mechanism 2 is fixed on the workbench 1, a new paper roll 3 is installed on the rewinding mechanism 2, and also includes a paper head pulling mechanism 4, a tail end limiting mechanism 5, an automatic tape applying machine 6 and a straightening mechanism 7.

[0017] The paper head pulling mechanism 4 includes a bracket 8, a connecting shaft 9, a rotating frame 10 and an air suction box 11. The bracket 8 is fixed on the workbench 1. One end of the rotating frame 10 is rotatably connected to the top of the bracket 8 through the connecting shaft 9. The air suction box 11 is installed on the rotating frame 10. A through hole 12 is opened on one side of the air suction box 11. The through hole 12 on the air suction box 11 can fit with the paper 13 to adsorb the paper 13.

[0018] The paper head pulling mechanism 4 also includes a guide rod 18, a screw rod 19, a rod seat 20, a slider 21 and a transmission motor 22. The screw rod 19 and the guide rod 18 are parallel to each other and fixed on the rod seat 20. The rod seat 20 is fixed on the side of the workbench 1. The transmission motor 22 is fixed on the rod seat 20 and the output shaft of the transmission motor 22 is coaxially fixedly connected with the screw rod 19. The slider 21 is slidably mounted on the guide rod 18 and is threadedly connected to the screw rod 19. The bracket 8 is fixed on the slider 21. The transmission motor 22 drives the slider 21 to move horizontally along the guide rod 18 through the screw rod 19.

[0019] A worm gear mechanism 23 and a worm motor 24 are also fixed to the top of the bracket 8. The worm wheel of the worm gear mechanism 23 is coaxially fixedly connected to the connecting shaft 9, and the worm of the worm gear mechanism 23 is coaxially fixedly connected to the output shaft of the worm motor 24. The worm motor 24 drives the rotating frame 10 and the vacuum box 11 to rotate around the connecting shaft 9 through the worm gear mechanism 23.

[0020] A support plate 25 is also fixed on the rotating frame 10, and a sliding rod 26 is vertically fixed on the vacuum box 11. The sliding rod 26 is vertically slidably connected to the support plate 25. A telescopic cylinder 27 is also fixed on the support plate 25. The piston rod of the telescopic cylinder 27 passes through the support plate 25 and is fixedly connected to the back side of the vacuum box 11. The telescopic cylinder 27 is used to drive the vacuum box 11 to move closer to or away from the support plate 25.

[0021] The working principle of the paper head pulling mechanism 4 is as follows: after the new paper roll 3 is installed on the unwinding mechanism 2, the paper head of the new paper roll 3 is opened, and then the worm motor 24 drives the vacuum box 11 to rotate to a position with the same height as the paper head hanging from the new paper roll 3 through the rotating frame 10, and then the transmission motor 22 drives the slider 21 and the vacuum box 11 to move toward the new paper roll 3 through the screw 19, so that the vacuum box 11 fits with the paper head, and then the vacuum box 11 is sucked into a negative pressure state through the air pump, and at this time the paper head is sucked by the vacuum box 11 , then the unwinding mechanism 2 starts to rotate slowly to transport the paper 13, and the rotating frame 10 continues to rotate downward, and drives the paper head to move downward until it is parallel to the surface of the workbench 1 and is close to the surface of the workbench 1, and then the transmission motor 22 drives the slider 21 and the vacuum box 11 to move in the opposite direction through the screw rod 19, so that the vacuum box 11 is away from the new paper roll 3, and then the paper head is pulled forward to the bottom of the automatic tape sticking machine 6, and the paper head is connected with the tail end of the previous roll of paper 13, completing the paper head pulling operation.

[0022] The straightening mechanism 7 is arranged in front of the unwinding mechanism 2 and is used to tighten the paper 13 after the new paper roll 3 is unwound. The straightening mechanism 7 includes a plurality of paper feeding rollers 17. The paper 13 passes through the plurality of paper feeding rollers 17 and is tightened on the paper feeding rollers 17, thereby increasing the tension of the paper 13 during its movement and preventing the paper 13 from generating wrinkles during the unwinding and winding processes.

[0023] The tail end limiting mechanism 5 includes a base 14, a torsion spring 15 and a pressure rod 16. One end of the pressure rod 16 is rotatably connected to the base 14. Both ends of the torsion spring 15 are fixedly connected to the pressure rod 16 and the base 14 respectively. The torsion spring 15 is used to drive the pressure rod 16 to rotate downward, and the paper 13 passes under the pressure rod 16.

[0024] An elastic limiting piece 28 is installed on the lower side of the top end of the pressure rod 16, and the elastic limiting piece 28 is slidably connected to the pressure rod 16 through a push rod 29. A spring is sleeved on the push rod 29, and the two ends of the spring are respectively in contact with the elastic limiting piece 28 and the pressure rod 16. The paper 13 can pass through the bottom of the elastic limiting piece 28 and abut against the elastic limiting piece 28. A paper pressing boss 30 is also fixed at a position below the elastic limiting piece 28 on the workbench 1. The top of the paper pressing boss 30 is an upwardly protruding arc surface, and the side of the paper pressing boss 30 facing the paper pulling head mechanism 4 is a concave arc surface 31. When the pressure rod 16 is rotated downward to the paper pressing boss 30, the elastic limiting piece 28 can make the paper 13 fit with the concave arc surface 31 of the paper pressing boss 30 and make the tail end of the paper 13 flat on the surface of the workbench 1.

[0025] The working principle of the tail end limiting mechanism 5 is as follows: when the paper 13 of the new paper roll 3 is normally conveyed, the elastic limiting piece 28 and the pressure rod 16 are supported by the taut paper 13, so that the pressure rod 16 is lifted upward, and the torsion spring 15 is compressed and tightened at this time. When the paper 13 of the new paper roll 3 is used up, one end of the paper 13 loses the tension, causing the paper 13 to become loose. At this time, the torsion spring 15 is reset to drive the pressure rod 16 to rotate downward, and then the paper 13 is pressed on the paper pressing boss 30. The paper 13 is continued to be tightened by the tail end limiting mechanism 5 to prevent the paper 13 on the rear equipment from wrinkling. On the other hand, after the paper 13 is pressed on the paper pressing boss 30, the tail end of the paper 13 can naturally fall and be laid flat on the surface of the workbench 1, so that the tail end of the paper 13 can be smoothly connected with the paper head of the new paper roll 3.

[0026] The automatic tape sticking machine 6 is used to stick the tape to the seam at the end of the paper 13. The automatic tape sticking machine 6 is set above the workbench 1 through the electric telescopic rod 32. The electric telescopic rod 32 is used to drive the automatic tape sticking machine 6 to approach or move away from the paper 13.

[0027] A rewinding machine includes the above-mentioned paper splicing device and also includes: a reeling machine 33, which is arranged on the rear side of the straightening mechanism 7 along the forward direction of the paper 13. The reeling machine 33 is used to reel the paper 13 conveyed by the unwinding mechanism 2. When the paper 13 of the new paper roll 3 is used up, the staff operates the reeling machine 33 to slow down the reeling speed and slowly reel the remaining paper 13. When the tail end of the remaining paper 13 moves to just below the automatic tape sticking machine 6, the reeling machine 33 can be closed. Finally, the paper head of a new roll of new paper roll 3 is connected with the tail end of the remaining paper 13 through the paper head pulling mechanism 4 and bonded with tape, and then the reeling machine 33 is started to reel the paper 13.

[0028] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0029] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A paper receiving device, comprising a workbench (1) and an unwinding mechanism (2), wherein the unwinding mechanism (2) is fixed on the workbench (1), and a new paper roll (3) is mounted on the unwinding mechanism (2), characterized in that: It also comprises a paper head pulling mechanism (4), a tail end limiting mechanism (5), an automatic tape sticking machine (6) and a straightening mechanism (7); the paper head pulling mechanism (4) comprises a bracket (8), a connecting shaft (9), a rotating frame (10) and an air suction box (11); the bracket (8) is fixed on the workbench (1); one end of the rotating frame (10) is rotatably connected to the top of the bracket (8) through the connecting shaft (9); the air suction box (11) is mounted on the rotating frame (10); a through hole (12) is provided on one side of the air suction box (11); the through hole (12) on the air suction box (11) can be fitted with a paper (13) to adsorb the paper (13); the tail end limiting mechanism (5) comprises a rotating frame (10) and an automatic tape sticking machine (6) and a straightening mechanism (7); the paper head pulling mechanism (4) comprises a bracket (8), a connecting shaft (9), a rotating frame (10) and an air suction box (11); The mechanism (5) comprises a base (14), a torsion spring (15) and a pressure rod (16); one end of the pressure rod (16) is rotatably connected to the base (14); two ends of the torsion spring (15) are respectively fixedly connected to the pressure rod (16) and the base (14); the torsion spring (15) is used to drive the pressure rod (16) to rotate downward, and the paper (13) passes under the pressure rod (16); the automatic tape sticking machine (6) is used to stick the tape to the seam at the end of the paper (13); the straightening mechanism (7) is arranged in front of the unwinding mechanism (2) and is used to tighten the paper (13) after the new paper roll (3) is unrolled, and the straightening mechanism (7) comprises a plurality of paper feeding rollers (17).

2. A paper splicing device according to claim 1, characterized in that: The paper head pulling mechanism (4) further comprises a guide rod (18), a screw rod (19), a rod seat (20), a slider (21) and a transmission motor (22); the screw rod (19) and the guide rod (18) are parallel to each other and fixed on the rod seat (20); the rod seat (20) is fixed on the side of the workbench (1); the transmission motor (22) is fixed on the rod seat (20) and the output shaft of the transmission motor (22) is coaxially fixedly connected to the screw rod (19); the slider (21) is slidably mounted on the guide rod (18) and is threadedly connected to the screw rod (19); the bracket (8) is fixed on the slider (21); and the transmission motor (22) drives the slider (21) to move horizontally along the guide rod (18) via the screw rod (19).

3. A paper splicing device according to claim 2, characterized in that: A worm gear mechanism (23) and a worm motor (24) are also fixed to the top of the bracket (8); the worm wheel of the worm gear mechanism (23) is coaxially fixedly connected to the connecting shaft (9); the worm of the worm gear mechanism (23) is coaxially fixedly connected to the output shaft of the worm motor (24); and the worm motor (24) drives the rotating frame (10) and the vacuum box (11) to rotate around the connecting shaft (9) through the worm gear mechanism (23).

4. A paper splicing device according to claim 1, characterized in that: A support plate (25) is also fixed on the rotating frame (10), and a sliding rod (26) is vertically fixed on the vacuum box (11). The sliding rod (26) is vertically slidably connected to the support plate (25). A telescopic cylinder (27) is also fixed on the support plate (25). The piston rod of the telescopic cylinder (27) passes through the support plate (25) and is fixedly connected to the back side of the vacuum box (11). The telescopic cylinder (27) is used to drive the vacuum box (11) to move closer to or away from the support plate (25).

5. A paper splicing device according to claim 1, characterized in that: An elastic limiting piece (28) is installed at the lower side of the top end of the pressure rod (16); the elastic limiting piece (28) is slidably connected to the pressure rod (16) via a push rod (29); a spring is sleeved on the push rod (29); the two ends of the spring are respectively in contact with the elastic limiting piece (28) and the pressure rod (16); the paper (13) can pass through the bottom of the elastic limiting piece (28) and contact with the elastic limiting piece (28); the workbench (1) is located at the elastic limiting piece (29). 8) is also fixed at a position below the paper pressing boss (30), the top of the paper pressing boss (30) is an upwardly protruding arc surface, and the side of the paper pressing boss (30) facing the paper pulling head mechanism (4) is an inwardly concave arc surface (31), and when the pressing rod (16) is rotated downward to the paper pressing boss (30), the elastic limiting piece (28) can make the paper (13) fit with the inwardly concave arc surface (31) of the paper pressing boss (30) and make the tail end of the paper (13) flat on the surface of the workbench (1).

6. A paper splicing device according to claim 1, characterized in that: The automatic adhesive tape sticking machine (6) is mounted above the workbench (1) via an electric telescopic rod (32), and the electric telescopic rod (32) is used to drive the automatic adhesive tape sticking machine (6) to move closer to or farther away from the paper (13).

7. A rewinding machine, characterized in that: The paper splicing device comprises a paper splicing device as claimed in any one of claims 3 to 6, and further comprises: a reeling machine (33), wherein the reeling machine (33) is arranged at the rear side of the straightening mechanism (7) along the advancing direction of the paper (13), and the reeling machine (33) is used to reel the paper (13) conveyed by the unwinding mechanism (2).

Images