Unreeling device of rotary press

Abstract

The utility model discloses an unwinding device of a rotary press, and relates to the technical field of rotary presses. The cutting device comprises a bottom plate, an unwinding mechanism is fixedly arranged on one side of the bottom plate, a cutting mechanism is fixedly arranged on one side of the unwinding mechanism, the unwinding mechanism comprises a conveying frame, a motor is arranged on one side of the conveying frame, a driving gear is fixedly arranged at the output end of the motor, a driving wheel is fixedly arranged on one side of the driving gear, and the driving wheel is fixedly arranged on the other side of the driving gear. The outer surface of the driving gear is connected with a chain in a meshed mode, the inner surface of the chain is connected with a driven gear in a meshed mode, one side of the driven gear is fixedly provided with a driven wheel, and the two sides of the driven gear are jointly provided with an unwinding frame. According to the unreeling device of the rotary press, the paper can be well unreeled through the unreeling device of the rotary press, and the paper can be well cut through the unreeling device of the rotary press through the cutting mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary printing machines, in particular to an unwinding device of a rotary printing machine. Background Art

[0002] A rotary press is a type of printing press in which the image to be printed is bent around a cylinder. Printing can be done on a variety of substrates, including paper, cardboard, and plastic. The substrate can be fed in sheets or unwound through the press on a continuous roll for printing and further modifications (such as die-cutting, varnishing, embossing) if necessary. Presses that use continuous rolls are sometimes called "web presses". They can print both sides at the same time at very fast printing speeds, and the printed paper can be dried quickly and folded directly into pages in different binding methods. Most rotary presses require a reel-out device to be used in conjunction with the press.

[0003] However, the prior art still has the following problems:

[0004] Firstly, when the rotary printing presses in the prior art cooperate with the unwinding device for unwinding, most of the unwinding devices of the rotary printing presses cannot unwind the paper well, which causes the unwinding device of the rotary printing press to easily have a speed asynchronism, thereby causing the paper to be easily damaged during the unwinding process.

[0005] Secondly, when the rotary printing presses in the prior art unwind with the unwinding device, most of the unwinding devices of the rotary printing presses cannot cut the paper well, resulting in the unwinding device of the rotary printing presses failing to cut the paper in time when unwinding, which easily leads to paper waste.

[0006] In view of the above problems, the inventor proposes an unwinding device for a rotary printing press to solve the above problems. Utility Model Content

[0007] In order to solve the problem that most unwinding devices of rotary printing presses cannot unwind paper well and most unwinding devices of rotary printing presses cannot cut paper well; the purpose of the utility model is to provide an unwinding device for a rotary printing press.

[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions: a reeling device of a rotary printing press, comprising a bottom plate, a reeling mechanism is fixedly provided on one side of the bottom plate, the reeling mechanism is used to reel paper, a cutting mechanism is fixedly provided on one side of the reeling mechanism, the cutting mechanism is used to cut paper, the reeling mechanism comprises a conveying frame, a motor is provided on one side of the conveying frame, a driving gear is fixedly provided on the output end of the motor, a driving wheel is fixedly provided on one side of the driving gear, a chain is meshed and connected on the outer surface of the driving gear, a driven gear is meshed and connected on the inner surface of the chain, a driven wheel is fixedly provided on one side of the driven gear, an reeling frame is commonly provided on both sides of the driven gear, a support frame is fixedly provided on one side of the motor, and one side of the support frame is fixedly connected to one side of the conveying frame, a limiting wheel is provided inside the conveying frame, and two ends of the limiting wheel are respectively rotatably connected to two sides of the inner surface of the conveying frame, a positioning wheel is provided inside the conveying frame, and two ends of the positioning wheel are respectively rotatably connected to two sides of the inner surface of the conveying frame.

[0009] Preferably, the cutting mechanism comprises a cutting frame, a cylinder is fixedly provided on the lower inner wall of the cutting frame, two cutting rods are fixedly provided on the lower inner wall of the cutting frame, springs are sleeved on the outer surfaces of the two cutting rods, two cutting plates are slidably provided on the outer surfaces of the two cutting rods, and the lower end of one of the cutting plates is fixedly connected to the output end of the cylinder, cutting knives are fixedly provided on one end of the opposite surfaces of the two cutting plates, rotating rods are provided on both sides of the two cutting plates, and a rotating plate is commonly provided on one side of every two rotating rods, rotating grooves are provided on both sides of the cutting frame, and the inner surfaces of the two rotating grooves are respectively rotatably fitted with one side of the two rotating plates, and the two sides of the two cutting plates are respectively rotatably connected to one side of the four rotating rods, and one side of every two rotating rods is respectively rotatably connected to one side of the opposite surfaces of the two rotating plates.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The utility model uses an unwinding mechanism, under the action of a motor, so that when it is necessary to unwind the paper, by starting the motor in the support frame on the conveying frame on one side of the bottom plate, the motor can drive the chain and the driving wheel to rotate through the driving gear, so that the chain can drive the driven wheel on the side of the driven gear to rotate in the unwinding frame, and the paper can be limited by the positioning wheel and the limiting wheel when unwinding, so that the unwinding device of the rotary printing press can unwind the paper well;

[0012] 2. The utility model uses a cutting mechanism, under the action of the cylinder, so that when it is necessary to cut the paper, the cylinder in the cutting frame is used, so that the output end of the cylinder can drive the cutting plate to slide on the inner surface of the cutting rod, so that the cutting plate can drive the rotating rod to rotate, and the rotating rod can drive the rotating plate to rotate in the rotating groove, so that the cutting plate can drive the cutting knife to cut the paper, so that the unwinding device of the rotary printing press can cut the paper well. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the unwinding mechanism of the utility model.

[0016] Figure 3 It is a cross-sectional schematic diagram of the cutting mechanism of the utility model.

[0017] In the figure: 1, bottom plate; 2, unwinding mechanism; 3, cutting mechanism; 20, conveying frame; 21, driving gear; 22, supporting frame; 23, motor; 24, chain; 25, unwinding frame; 26, driven gear; 27, driven wheel; 28, positioning wheel; 29, driving wheel; 201, limiting wheel; 30, cutting frame; 31, rotating groove; 32, rotating plate; 33, rotating rod; 34, spring; 35, cutting knife; 36, cutting plate; 37, cylinder; 38, cutting rod. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Embodiment 1: Figure 1-2As shown, the utility model provides an unwinding device of a rotary printing press, comprising a bottom plate 1, a unwinding mechanism 2 is fixedly provided on one side of the bottom plate 1, a cutting mechanism 3 is fixedly provided on one side of the unwinding mechanism 2, the unwinding mechanism 2 comprises a conveying frame 20, a motor 23 is provided on one side of the conveying frame 20, a driving gear 21 is fixedly provided on the output end of the motor 23, a driving wheel 29 is fixedly provided on one side of the driving gear 21, a chain 24 is meshedly connected to the outer surface of the driving gear 21, a driven gear 26 is meshedly connected to the inner surface of the chain 24, a driven wheel 27 is fixedly provided on one side of the driven gear 26, and both sides of the driven gear 26 are connected to the driven wheel 27. A reel 25 is provided. Through the reel mechanism 2, under the action of the motor 23, when it is necessary to reel the paper, by starting the motor 23 in the support frame 22 on the conveying frame 20 on one side of the bottom plate 1, the motor 23 can drive the chain 24 and the driving wheel 29 to rotate through the driving gear 21, so that the chain 24 can drive the driven wheel 27 on the side of the driven gear 26 to rotate in the reel 25. When the paper is unrolled, the positioning wheel 28 and the limiting wheel 201 can be used to limit the paper, so that the unwinding device of the rotary printing press can well unwind the paper.

[0020] A support frame 22 is fixedly provided on one side of the motor 23 , and one side of the support frame 22 is fixedly connected to one side of the conveying frame 20 .

[0021] By adopting the above technical solution, the motor 23 can be fixed on one side of the conveying frame 20 through the support frame 22.

[0022] A limiting wheel 201 is disposed inside the conveying frame 20 , and two ends of the limiting wheel 201 are rotatably connected to two sides of the inner surface of the conveying frame 20 .

[0023] By adopting the above technical solution, the limiting wheel 201 can rotate on both sides of the inner surface of the conveying frame 20 through the conveying frame 20.

[0024] A positioning wheel 28 is disposed inside the conveying frame 20 , and two ends of the positioning wheel 28 are rotatably connected to two sides of the inner surface of the conveying frame 20 .

[0025] By adopting the above technical solution, the positioning wheel 28 can rotate on both sides of the inner surface of the conveying frame 20 through the conveying frame 20.

[0026] Embodiment 2: Figure 3As shown, the cutting mechanism 3 includes a cutting frame 30, a cylinder 37 is fixedly provided on the lower inner wall of the cutting frame 30, two cutting rods 38 are fixedly provided on the lower inner wall of the cutting frame 30, the outer surfaces of the two cutting rods 38 are sleeved with springs 34, the outer surfaces of the two cutting rods 38 are slidably provided with two cutting plates 36, and the lower end of one of the cutting plates 36 is fixedly connected to the output end of the cylinder 37, a cutting knife 35 is fixedly provided on one end of the opposite surface of the two cutting plates 36, rotating rods 33 are provided on both sides of the two cutting plates 36, and a rotating plate is provided on one side of each of the two rotating rods 33. 32. Through the cutting mechanism 3, under the action of the cylinder 37, when it is necessary to cut the paper, through the cylinder 37 in the cutting frame 30, the output end of the cylinder 37 can drive the cutting plate 36 to slide on the inner surface of the cutting rod 38, so that the cutting plate 36 can drive the rotating rod 33 to rotate, so that the rotating rod 33 can drive the rotating plate 32 to rotate in the rotating groove 31, so that the cutting plate 36 can drive the cutting knife 35 to cut the paper, thereby achieving the purpose that the unwinding device of the rotary printing press can cut the paper well.

[0027] By adopting the above technical solution, the unwinding device of the rotary printing press can cut the paper well.

[0028] Rotation slots 31 are formed on both sides of the cutting frame 30 , and the inner surfaces of the two rotation slots 31 are respectively rotationally fitted with one side of the two rotation plates 32 .

[0029] By adopting the above technical solution, the rotating plate 32 can rotate on the inner surface of the rotating groove 31 through the rotating groove 31 .

[0030] Two sides of the two cutting plates 36 are rotatably connected to one side of the four rotating rods 33 respectively.

[0031] By adopting the above technical solution, the rotating rod 33 can be rotated on both sides of the cutting plate 36.

[0032] One side of each of the two rotating rods 33 is rotatably connected to one side of the opposite surface of the two rotating plates 32 .

[0033] By adopting the above technical solution, the rotating rod 33 can drive the rotating plate 32 to rotate.

[0034] Working principle: Through the unwinding mechanism 2, under the action of the motor 23, when the paper needs to be unrolled, by starting the motor 23 in the support frame 22 on the conveying frame 20 on one side of the bottom plate 1, the motor 23 can drive the chain 24 and the driving wheel 29 to rotate through the driving gear 21, so that the chain 24 can drive the driven wheel 27 on the side of the driven gear 26 to rotate in the unwinding frame 25. When the paper is unrolled, the positioning wheel 28 and the limiting wheel 201 can be used to limit the paper, so that the unwinding device of the rotary printing press can well control the paper. For the purpose of unwinding, through the cutting mechanism 3, under the action of the cylinder 37, when it is necessary to cut the paper, through the cylinder 37 in the cutting frame 30, the output end of the cylinder 37 can drive the cutting plate 36 to slide on the inner surface of the cutting rod 38, so that the cutting plate 36 can drive the rotating rod 33 to rotate, so that the rotating rod 33 can drive the rotating plate 32 to rotate in the rotating groove 31, so that the cutting plate 36 can drive the cutting knife 35 to cut the paper, thereby achieving the purpose that the unwinding device of the rotary printing press can well cut the paper.

[0035] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A reeling device for a rotary printing press, comprising a bottom plate (1), characterized in that: A reeling mechanism (2) is fixedly provided on one side of the bottom plate (1), and a cutting mechanism (3) is fixedly provided on one side of the reeling mechanism (2); The unwinding mechanism (2) comprises a conveying frame (20), a motor (23) is provided on one side of the conveying frame (20), a driving gear (21) is fixedly provided at the output end of the motor (23), a driving wheel (29) is fixedly provided on one side of the driving gear (21), a chain (24) is meshedly connected to the outer surface of the driving gear (21), a driven gear (26) is meshedly connected to the inner surface of the chain (24), a driven wheel (27) is fixedly provided on one side of the driven gear (26), and an unwinding frame (25) is provided on both sides of the driven gear (26).

2. The unwinding device of a rotary printing press according to claim 1, characterized in that: The cutting mechanism (3) comprises a cutting frame (30), a cylinder (37) is fixedly provided on the lower inner wall of the cutting frame (30), two cutting rods (38) are fixedly provided on the lower inner wall of the cutting frame (30), the outer surfaces of the two cutting rods (38) are sleeved with springs (34), two cutting plates (36) are slidably provided on the outer surfaces of the two cutting rods (38), the lower end of one of the cutting plates (36) is fixedly connected to the output end of the cylinder (37), cutting knives (35) are fixedly provided on one end of the opposite surface of the two cutting plates (36), rotating rods (33) are provided on both sides of the two cutting plates (36), and a rotating plate (32) is provided on one side of each of the two rotating rods (33).

3. The unwinding device of a rotary printing press according to claim 1, characterized in that: A support frame (22) is fixedly provided on one side of the motor (23), and one side of the support frame (22) is fixedly connected to one side of the conveying frame (20).

4. The unwinding device of a rotary printing press according to claim 1, characterized in that: A limiting wheel (201) is provided inside the conveying frame (20), and two ends of the limiting wheel (201) are rotatably connected to two sides of the inner surface of the conveying frame (20).

5. The unwinding device of a rotary printing press according to claim 1, characterized in that: A positioning wheel (28) is provided inside the conveying frame (20), and two ends of the positioning wheel (28) are rotatably connected to two sides of the inner surface of the conveying frame (20) respectively.

6. The unwinding device of a rotary printing press according to claim 2, characterized in that: Rotation grooves (31) are provided on both sides of the cutting frame (30), and the inner surfaces of the two rotation grooves (31) are respectively rotationally fitted with one side of the two rotation plates (32).

7. The unwinding device of a rotary printing press according to claim 2, characterized in that: The two sides of the two cutting plates (36) are respectively rotatably connected to one side of the four rotating rods (33).

8. The unwinding device of a rotary printing press according to claim 2, characterized in that: One side of each of the two rotating rods (33) is rotatably connected to one side of the opposite surface of the two rotating plates (32).

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