Paper feeding device of printing machine

Abstract

The utility model relates to the technical field of paper feeding of printing machines, in particular to a paper feeding device of a printing machine, which comprises a lifting platform and a grabbing mechanism positioned above the table top of the lifting platform, a paper pile is supported on the table top of the lifting platform, and the side edge, away from the paper feeding end of the printing machine, of the paper pile is a first side portion. The grabbing mechanism comprises a first linear reciprocating device, a mounting frame, a pressing block, a first air blowing pipe and a vacuum suction cup, wherein the pressing block, the first air blowing pipe and the vacuum suction cup are arranged on the mounting frame. The movable end of the first linear reciprocating device can move towards the paper feeding end of the printing machine, pressing blocks abut against the two ends of the top face of the first side portion, and the air outlet end of the first air blowing pipe faces the middle position of the top of the first side portion. According to the utility model, irregular offset of paper due to static electricity and friction force can be avoided, and the paper can be prevented from being attached to grabbed paper.

Description

Technical Field

[0001] The utility model relates to the technical field of paper loading of printing machines, in particular to a paper loading device for a printing machine. Background Art

[0002] During the printing operation of an industrial printing machine, the paper is usually loaded by means of vacuum adsorption. However, when taking the paper on the top of the paper stack, due to static electricity and friction, the paper on the top of the paper stack will shift irregularly and adhere to the grabbed paper, which is likely to cause paper jams in the industrial printing machine. In order to reduce the paper jams caused by paper movement, it is necessary for the staff to regularly organize the paper stack. However, organizing the paper stack requires suspending the operation of the equipment, which in turn affects the production rhythm of the workshop. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a paper loading device for a printing machine, which can avoid the irregular shift of paper due to static electricity and friction and the adhesion of paper to the grabbed paper.

[0004] To solve the above technical problem, the technical solution adopted by the utility model is: a paper loading device for a printing machine, including a lifting platform and a grabbing mechanism located above the tabletop of the lifting platform; a paper stack is supported on the tabletop of the lifting platform, and one side of the paper stack away from the paper feeding end of the printing machine is the first side.

[0005] The grabbing mechanism includes a first linear reciprocating device, a mounting frame, and a pressing block, a first air blowing pipe and a vacuum suction cup arranged on the mounting frame; the movable end of the first linear reciprocating device can move towards the paper feeding end direction of the printing machine, the pressing blocks are abutted against both ends of the top surface of the first side, and the air outlet end of the first air blowing pipe faces the middle position of the top of the first side.

[0006] Further, a fastener is detachably arranged on the mounting frame, and the pressing block is connected to the mounting frame through the fastener.

[0007] Further, the pressing block is a roller, the wheel surface of the roller abuts against both ends of the top surface of the first side, and the projection of the rotation axis of the roller on the top surface of the paper stack is perpendicular to the first side.

[0008] Further, the above paper loading device for a printing machine further includes an auxiliary air blowing assembly, the auxiliary air blowing assembly includes a second air blowing pipe, the other two sides of the paper stack where the paper stack is connected to both ends of the first side are the second sides, and the air outlet end of the second air blowing pipe faces the middle position of the top of the second side.

[0009] Further, the blowing pressure of the second air blowing pipe is less than the blowing pressure of the first air blowing pipe.

[0010] Further, the auxiliary air blowing assembly further includes a second linear reciprocating device, the second linear reciprocating device has a moving end moving in the direction of the second side portion, and the second air blowing pipe is arranged on the moving end of the second linear reciprocating device.

[0011] Further, the grasping mechanism further includes a third linear reciprocating device, the third linear reciprocating device has a moving end moving in the vertical direction, the third linear reciprocating device is arranged on the moving end of the first linear reciprocating device, the mounting bracket is arranged on the moving end of the third linear reciprocating device, a first top block capable of abutting against the first side portion is arranged on the mounting bracket, and a second top block capable of abutting against the second side portion is arranged on the moving end of the second linear reciprocating device.

[0012] The beneficial effects of the present utility model are as follows: The lifting platform continuously lifts the paper stack close to the grasping mechanism to ensure that the vacuum suction cup on the grasping mechanism can adsorb the paper and enter the paper feeding place of the industrial printing press. Specifically, during the process of grasping the paper, the grasping mechanism blows air to the middle position at the top of the first side portion by using the first air blowing pipe, and the air enters the gaps between the papers, so as to expand the gaps between the papers, thereby reducing the static electricity and friction force between adjacent papers. At the same time, the grasping mechanism presses the pressing block against the two ends of the top surface of the first side portion to prevent the paper from flying up under the action of the wind. Then, when the grasping mechanism sends the paper at the top of the paper stack into the paper feeding place of the industrial printing press through the cooperation of the first linear reciprocating device and the vacuum suction cup, the papers on the remaining paper stacks will not be irregularly displaced due to static electricity and friction force, nor will they adhere to the grasped paper. Description of the Drawings

[0013] Figure 1 is a schematic structural view of a paper feeding device for a printing press proposed by the present utility model;

[0014] Figure 2 is a front view structural schematic view of a paper feeding device for a printing press proposed by the present utility model;

[0015] Label Description:

[0016] 1. Lifting platform;

[0017] 2. Grasping mechanism; 21. First linear reciprocating device; 22. Mounting bracket; 221. Fastener; 222. First top block; 23. Pressing block; 24. First air blowing pipe; 25. Vacuum suction cup; 26. Third linear reciprocating device;

[0018] 3. Auxiliary air blowing assembly; 31. Second air blowing pipe; 32. Second linear reciprocating device; 321. Second top block. Detailed Embodiment

[0019] To describe in detail the technical content, achieved objectives and effects of the present utility model, the following will be described in conjunction with the embodiments and with reference to the accompanying drawings.

[0020] Please refer to Figure 1 and Figure 2 As shown, a paper loading device for a printing machine of the present utility model includes a lifting platform 1 and a grasping mechanism 2 located above the tabletop of the lifting platform 1; a paper stack is supported on the tabletop of the lifting platform 1, and one side of the paper stack away from the paper feeding end of the printing machine is the first side; the grasping mechanism 2 includes a first linear reciprocating device 21, a mounting frame 22, and a pressing block 23, a first air blowing pipe 24 and a vacuum suction cup 25 provided on the mounting frame 22; the movable end of the first linear reciprocating device 21 can move towards the paper feeding end direction of the printing machine, the pressing blocks 23 are abutted against both ends of the top surface of the first side, and the air outlet end of the first air blowing pipe 24 faces the middle position at the top of the first side. During the process of grasping the paper, the grasping mechanism 2 blows air to the middle position at the top of the first side through the first air blowing pipe 24, and the air enters the gaps between the papers to expand the gaps between the papers, thereby reducing the static electricity and friction force between adjacent papers. At the same time, the grasping mechanism 2 uses the pressing blocks 23 to press against both ends of the top surface of the first side to prevent the papers from flying up under the action of the air. Then, when the grasping mechanism 2 sends the topmost paper of the paper stack to the paper feeding place of the industrial printing machine through the cooperation of the first linear reciprocating device 21 and the vacuum suction cup 25, the papers on the remaining paper stack will not be irregularly displaced due to static electricity and friction force, nor will they adhere to the grasped paper. At the same time, the lifting platform 1 continuously supports the paper stack close to the grasping mechanism 2 to ensure that the vacuum suction cup 25 on the grasping mechanism 2 can adsorb the paper into the paper feeding place of the industrial printing machine.

[0021] In one embodiment, please refer to Figure 1 and Figure 2 As shown, a fastener 221 is detachably provided on the mounting frame 22, and the pressing block 23 is connected to the mounting frame 22 through the fastener 221. By using the locking and fixing and relaxation activities of the fastener 221 on the mounting frame 22, it is convenient to adjust the distance between the pressing blocks 23 at both ends of the top surface of the first side, so as to facilitate the first air blowing pipe 24 to blow up the papers.

[0022] In an alternative embodiment, please refer to Figure 1 and Figure 2 As shown, the pressing block 23 is a roller, the wheel surface of the roller abuts against both ends of the top surface of the first side, and the projection of the rotation axis of the roller on the top surface of the paper stack is perpendicular to the first side. By setting the pressing block 23 as a roller, when the first air blowing pipe 24 blows up the papers, the pressing block 23 can rotate along with it, which can prevent the pressing block 23 from tearing the papers.

[0023] In one embodiment, please refer to Figure 1 and Figure 2 As shown, the paper loading device of a printing press further includes an auxiliary air blowing assembly 3. The auxiliary air blowing assembly 3 includes a second air blowing pipe 31. The other two sides of the paper stack that are connected to the two ends of the first side are the second sides. The air outlet end of the second air blowing pipe 31 faces the middle position at the top of the second side. Among them, preferably, the blowing pressure of the second air blowing pipe 31 is less than the blowing pressure of the first air blowing pipe 24. By using the second air blowing pipe 31 to blow air to the second side of the paper stack, it can further help the first air blowing pipe 24 to blow up the paper.

[0024] In one embodiment, please refer to Figure 1 and Figure 2 As shown, the auxiliary air blowing assembly 3 further includes a second linear reciprocating device 32. The second linear reciprocating device 32 has a moving end that moves in the direction of the second side. The second air blowing pipe 31 is arranged on the moving end of the second linear reciprocating device 32. By using the second linear reciprocating device 32, the distance between the second air blowing pipe 31 and the paper stack can be controlled.

[0025] In one embodiment, please refer to Figure 1 and Figure 2 As shown, the grasping mechanism 2 further includes a third linear reciprocating device 26. The third linear reciprocating device 26 has a moving end that moves in the vertical direction. The third linear reciprocating device 26 is arranged on the moving end of the first linear reciprocating device 21. The mounting frame 22 is arranged on the moving end of the third linear reciprocating device 26. A first top block 222 that can abut against the first side is arranged on the mounting frame 22. A second top block 321 that can abut against the second side is arranged on the moving end of the second linear reciprocating device 32. By using the first top block 222 to abut against the first side of the paper stack and the second top block 321 to abut against the second side of the paper stack, the stability of the paper stack can be ensured when blowing air to the paper stack. And every time the third linear reciprocating device 26 drives the mounting frame 22 to approach the paper stack, the first top block 222 can comb the first side of the paper stack, which can guarantee the position of the paper, so as to ensure the printing position of the industrial printing press on the paper.

[0026] Embodiment 1

[0027] A paper loading device of a printing press, please refer to Figure 1 and Figure 2As shown in the figure, it includes a lifting platform 1 and a grasping mechanism 2 located above the tabletop of the lifting platform 1; a paper stack is supported on the tabletop of the lifting platform 1, and one side of the paper stack away from the paper feeding end of the printing press is the first side; the grasping mechanism 2 includes a first linear reciprocating device 21, a mounting frame 22, and a pressing block 23, a first air blowing pipe 24 and a vacuum suction cup 25 arranged on the mounting frame 22; the movable end of the first linear reciprocating device 21 can move towards the paper feeding end of the printing press, the pressing blocks 23 are abutted against both ends of the top surface of the first side, and the air outlet end of the first air blowing pipe 24 faces the middle position at the top of the first side. A fastening member 221 is detachably arranged on the mounting frame 22, and the pressing block 23 is connected to the mounting frame 22 through the fastening member 221.

[0028] Working principle: During the process of grasping the paper, the grasping mechanism 2 uses the first air blowing pipe 24 to blow air towards the middle position at the top of the first side, and the air enters the gaps between the papers, so as to expand the gaps between the papers, thereby reducing the static electricity and friction force between adjacent papers. At the same time, the grasping mechanism 2 uses the pressing block 23 to press against both ends of the top surface of the first side to prevent the papers from flying up under the action of the air. Then, when the grasping mechanism 2 cooperates with the first linear reciprocating device 21 and the vacuum suction cup 25 to send the topmost paper of the paper stack into the paper feeding place of the industrial printing press, the papers on the remaining paper stack will not shift irregularly due to static electricity and friction force, nor will they adhere to the grasped paper. At the same time, the lifting platform 1 continuously supports the paper stack close to the grasping mechanism 2 to ensure that the vacuum suction cup 25 on the grasping mechanism 2 can adsorb the paper into the paper feeding place of the industrial printing press.

[0029] Embodiment Two

[0030] On the basis of Embodiment One, this embodiment further defines that the paper loading device of the printing press further includes an auxiliary air blowing assembly 3, specifically as follows:

[0031] Please refer to Figure 1 and Figure 2 As shown in the figure, the auxiliary air blowing assembly 3 includes a second air blowing pipe 31 and a second linear reciprocating device 32; the other two sides of the paper stack connected to both ends of the first side are the second sides, and the air outlet end of the second air blowing pipe 31 faces the middle position at the top of the second side. The second linear reciprocating device 32 has a movable end that moves towards the second side direction, and the second air blowing pipe 31 is arranged on the movable end of the second linear reciprocating device 32.

[0032] Working principle: Using the second air blowing pipe 31 to blow air towards the second side of the paper stack can further help the first air blowing pipe 24 to blow up the papers. Among them, preferably, the blowing pressure of the second air blowing pipe 31 is less than the blowing pressure of the first air blowing pipe 24.

[0033] Embodiment III

[0034] In this embodiment, on the basis of Embodiment II, it is further defined that the grasping mechanism 2 further includes a third linear reciprocating device 26, specifically as follows:

[0035] Please refer to Figure 1 and Figure 2 As shown, the third linear reciprocating device 26 has a moving end that moves in the vertical direction. The third linear reciprocating device 26 is arranged on the moving end of the first linear reciprocating device 21. The mounting bracket 22 is arranged on the moving end of the third linear reciprocating device 26. A first top block 222 that can abut against the first side portion is arranged on the mounting bracket 22. A second top block 321 that can abut against the second side portion is arranged on the moving end of the second linear reciprocating device 32.

[0036] Working principle: By using the first top block 222 to abut against the first side portion of the paper stack and the second top block 321 to abut against the second side portion of the paper stack, the stability of the paper stack can be ensured when blowing air on the paper stack. Moreover, every time the third linear reciprocating device 26 drives the mounting bracket 22 to approach the paper stack, the first top block 222 can comb the first side portion of the paper stack, which can guarantee the position of the paper, so as to ensure the printing position of the industrial printing machine on the paper.

[0037] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical fields, are equally included in the patent protection scope of the present invention.

Claims

1. A paper feeding device for a printing press, characterized in that: It comprises a lifting platform and a grabbing mechanism located above the table of the lifting platform; a paper pile is lifted on the table of the lifting platform, and a side of the paper pile away from the paper feeding end of the printing press is a first side portion; The grabbing mechanism includes a first linear reciprocating device, a mounting frame, and a pressure block, a first air blowing pipe and a vacuum suction cup arranged on the mounting frame; the movable end of the first linear reciprocating device can move toward the paper feeding end of the printing press, the pressure blocks are abutted on both ends of the top surface of the first side portion, and the air outlet end of the first air blowing pipe faces the top middle position of the first side portion.

2. The paper feeding device of the printing press according to claim 1, characterized in that: The mounting frame is detachably provided with fasteners, and the pressing block is connected to the mounting frame via the fasteners.

3. The paper feeding device of the printing press according to claim 2, characterized in that: The pressing block is a roller, the wheel surface of the roller abuts against two ends of the top surface of the first side portion, and the projection of the rotating axis of the roller on the top surface of the paper pile is perpendicular to the first side portion.

4. The paper feeding device of the printing press according to claim 1, characterized in that: It also includes an auxiliary blowing component, which includes a second blowing pipe. The other two sides of the paper pile connected to the two ends of the first side portion are the second side portions, and the air outlet end of the second blowing pipe faces the top middle position of the second side portion.

5. The paper feeding device of the printing press according to claim 4, characterized in that: The blowing pressure of the second blowing pipe is lower than the blowing pressure of the first blowing pipe.

6. The paper feeding device of the printing press according to claim 4, characterized in that: The auxiliary air blowing assembly further comprises a second linear reciprocating device, wherein the second linear reciprocating device has a movable end that moves toward the second side portion, and the second air blowing pipe is arranged on the movable end of the second linear reciprocating device.

7. The paper feeding device of the printing press according to claim 6, characterized in that: The gripping mechanism also includes a third linear reciprocating device, which has a movable end that moves in a vertical direction, and the third linear reciprocating device is arranged on the movable end of the first linear reciprocating device. The mounting frame is arranged on the movable end of the third linear reciprocating device, and the mounting frame is provided with a first top block that can abut against the first side portion, and the movable end of the second linear reciprocating device is provided with a second top block that can abut against the second side portion.

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