A printing machine paper feeding device with a monitoring and pressing function

Abstract

The utility model discloses a printing machine paper feeding device with monitoring and pressing function belongs to printing manufacturing technical field, solves the poor paper feeding quality of existing semi -automatic carton printing machine, causes the problem of high process consumption. The printing machine paper feeding device with monitoring and pressing function, including the feeding platform, be equipped with the conveying belt for conveying corrugated paper on the feeding platform, the conveying belt both ends are rotatably installed on the feeding platform through the pivot, one end of one pivot is equipped with the driving motor, one end of feeding platform is equipped with the auxiliary platform, a plurality of cylinders are rotatably equipped on the auxiliary platform, the other side of feeding platform is equipped with the baffle perpendicular to it, the baffle is equipped with the discharge channel between feeding platform. The printing machine paper feeding device with monitoring and pressing function of the utility model avoids the quality problem caused by the shortage of paperboard, reduces the process consumption.

Description

Technical Field

[0001] This utility model relates to the field of printing manufacturing technology, and in particular to a paper feeding device for a printing press with a monitoring and pressing function. Background Technology

[0002] Corrugated box printing equipment can be divided into semi-automatic, fully automatic, and high-speed corrugated box printing machines. Currently, semi-automatic corrugated box printing machines require manual stacking of corrugated cardboard at the paper feeding section to achieve continuous printing production. However, the following issues can arise during actual production, leading to product quality problems:

[0003] First, insufficient paperboard in the printing press's paper feeding section can occur if the paperboard replenishment operator fails to replenish it in a timely manner. This leads to insufficient pressure and friction between the paperboard and the conveyor rollers, causing paperboard lag and resulting in slotting misalignment. Second, replenishing paperboard only after the paperboard has been completely fed into the printing press can easily cause instability in paperboard transport due to the inertia of the replenished paperboard, also leading to slotting misalignment. Both of these situations result in slotting misalignment and high process costs. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the above-mentioned shortcomings of the prior art by providing a paper feeding device for a printing press with a monitoring and pressing function, which avoids quality problems caused by insufficient paperboard, reduces process consumption, and has the characteristics of wide applicability and strong practicality.

[0005] The technical solution adopted by this utility model is as follows: a paper feeding device for a printing press with monitoring and pressing function, including a feeding platform, on which a conveyor belt for conveying corrugated cardboard is provided. Both ends of the conveyor belt are rotatably mounted on the feeding platform via rotating shafts. One end of one of the rotating shafts is provided with a drive motor. One end of the feeding platform is provided with an auxiliary platform. Multiple rollers are rotatably mounted on the auxiliary platform. A baffle is provided perpendicularly to the feeding platform on the other side. A discharge channel is provided between the baffle and the feeding platform. A pressing device is symmetrically arranged on both sides of the feeding platform. A monitoring and alarm device is provided on the top of the baffle. Both the pressing device and the monitoring and alarm device are electrically connected to a controller.

[0006] As a further improvement, the pressing device includes an L-shaped mounting bracket, a linear guide rail, a telescopic cylinder, and a pressure plate. The L-shaped mounting bracket is arranged on one side of the feeding platform, the linear guide rail is mounted on the L-shaped mounting bracket, the bottom of the telescopic cylinder is mounted on the slider of the linear guide rail, and the pressure plate is perpendicularly connected to the output end of the telescopic cylinder.

[0007] Furthermore, the monitoring and alarm device includes a mounting bracket, a diffuse reflection photoelectric switch, and an alarm. The mounting bracket is mounted on a baffle, the diffuse reflection photoelectric switch is mounted at one end of the mounting bracket, and the detection end of the diffuse reflection photoelectric switch is directed toward the corrugated cardboard. The alarm is mounted at the other end of the mounting bracket. The diffuse reflection photoelectric switch and the alarm are connected by a relay circuit, and the alarm is electrically connected to the controller.

[0008] Furthermore, the relay circuit includes a changeover switch, a relay's closing terminal, and a normally open terminal; the changeover switch and the diffuse reflection photoelectric switch are connected in series between the positive and negative terminals of the power supply, the closing terminal is connected in parallel between the positive terminal of the power supply and the enable terminal of the diffuse reflection photoelectric switch, and the normally open terminal is connected in series with the alarm and then connected between the positive and negative terminals of the power supply.

[0009] Furthermore, the baffle is provided with a support plate at its top, and the mounting bracket is mounted on the support plate.

[0010] Furthermore, the baffle is provided with a reminder strip to indicate the lowest position of the corrugated cardboard.

[0011] Beneficial effects

[0012] Compared with the prior art, this utility model has the following advantages:

[0013] This invention relates to a printing press paper feeding device with monitoring and pressing functions. The operator first places a small amount of corrugated cardboard on an auxiliary platform. With the assistance of rollers, the operator pushes the cardboard onto the conveyor belt and then stacks it. The auxiliary platform effectively reduces the risk of adding cardboard while the belt is running. The upper corrugated cardboard is blocked by baffles, and the lower corrugated cardboard is fed out through the discharge channel to the printing station by the conveyor belt. A diffuse reflection photoelectric switch monitors the minimum amount of cardboard stacked in the feeding section, and a voice-monitored alarm reminds the cardboard stacking operator to replenish the stack in a timely manner. The cardboard filling process avoids issues caused by insufficient cardboard or having to replenish cardboard after it has been completely fed, which can lead to sluggish or unstable cardboard conveying and cause slotting misalignment. This reduces process consumption. At the same time, the alarm sends a signal to the controller, which controls the linear guide rail to move the telescopic cylinder and pressure plate towards the cardboard. After the telescopic cylinder reaches the predetermined position, it pushes the pressure plate, causing the pressure plates on both sides to exert downward pressure on the remaining corrugated cardboard, thereby increasing the friction with the belt and effectively preventing cardboard conveying sluggishness. This ensures stable operation of the equipment and makes it highly practical and widely applicable. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is an enlarged side view of the clamping device in this utility model;

[0016] Figure 3 The circuit diagram of the relay circuit of this utility model.

[0017] The components are as follows: 1-Feeding platform, 2-Monitoring and alarm device, 3-Pressure device, 4-Conveyor belt, 5-Rotating shaft, 6-Drive motor, 7-Auxiliary platform, 8-Roller, 9-Corrugated cardboard, 10-Baffle, 11-Discharge channel, 12-Indication strip, 13-Support plate, 21-Diffuse reflection photoelectric switch, 22-Mounting bracket, 23-Alarm, 31-Linear guide rail, 32-Telescopic cylinder, 33-Pressure plate, 34-L-type mounting bracket, SW-Changeover switch, KA-Relay closing terminal, KA11-Normally open terminal. Detailed Implementation

[0018] The present invention will be further described below with reference to specific embodiments shown in the accompanying drawings.

[0019] See Figure 1-3As shown, this utility model discloses a printing press paper feeding device with monitoring and pressing functions, including a feeding platform 1. The feeding platform 1 is equipped with a conveyor belt 4 for conveying corrugated cardboard 9. Both ends of the conveyor belt 4 are rotatably mounted on the feeding platform 1 via rotating shafts 5. One end of one rotating shaft 5 is equipped with a drive motor 6. An auxiliary platform 7 is located at one end of the feeding platform 1, with multiple rollers 8 rotatably mounted on the auxiliary platform 7. A baffle 10 is arranged perpendicularly to the feeding platform 1 on the other side, with a discharge channel 11 between the baffle 10 and the feeding platform 1. Symmetrically arranged pressing devices 3 are located on both sides of the feeding platform 1. A monitoring and alarm device 2 is located on the top of the baffle 10. Both the pressing devices 3 and the monitoring and alarm device 2 are electrically connected to a controller. The operator first places a small amount of corrugated cardboard 9 on the auxiliary platform 7. With the assistance of the rollers 8, the operator pushes the corrugated cardboard 9 onto the conveyor belt 4, and then stacks it. The auxiliary platform 7 effectively reduces the risk of the operator adding corrugated cardboard 9 while the belt is running. The upper corrugated cardboard 9 is blocked by the baffle, while the lower corrugated cardboard 9 is fed from the discharge channel 11 to the printing station by the conveyor belt 4. A diffuse reflection photoelectric switch 21 monitors the minimum number of cardboard stacks in the feeding section. An alarm 23 with voice monitoring reminds the cardboard stacking operator to replenish the cardboard in time, avoiding the quality problems of slotting misalignment caused by insufficient cardboard or replenishing cardboard after the cardboard has been fed out, which can lead to lag or instability in the cardboard feeding. This reduces process consumption. At the same time, the alarm 23 sends a signal to the controller, which controls the linear guide rail 31 to move, moving the telescopic cylinder 32 and the pressure plate 33 towards the cardboard. After the telescopic cylinder 32 reaches the predetermined position, it pushes the pressure plate 33, so that the pressure plates on both sides exert downward pressure on the remaining corrugated cardboard 9, thereby increasing the friction with the belt and effectively avoiding the phenomenon of cardboard feeding lag. This ensures the stable operation of the equipment and has the characteristics of strong practicality and wide applicability.

[0020] Specifically, the pressing device 3 includes an L-shaped mounting frame 34, a linear guide rail 31, a telescopic cylinder 32, and a pressure plate 33. The L-shaped mounting frame 34 is arranged on one side of the feeding platform 1. The linear guide rail 31 is mounted on the L-shaped mounting frame 34. The bottom of the telescopic cylinder 32 is mounted on the slider of the linear guide rail 31. The pressure plate 33 is vertically connected to the output end of the telescopic cylinder 32. The controller controls the linear guide rail 31 to move, moving the telescopic cylinder 32 and the pressure plate 33 towards the cardboard. After the telescopic cylinder 32 reaches the predetermined position, it pushes the pressure plate 33, so that the pressure plates on both sides exert downward pressure on the remaining corrugated cardboard 9, thereby increasing the friction with the belt and effectively avoiding the phenomenon of cardboard lag, thus ensuring the stable operation of the equipment. When the operator adds the corrugated cardboard 9, the alarm 23 stops. At this time, the controller controls the telescopic cylinder 32 to move in the opposite direction to avoid affecting the corrugated cardboard 9 falling down.

[0021] Preferably, the monitoring and alarm device 2 includes a mounting bracket 22, a diffuse reflection photoelectric switch 21, and an alarm 23. The mounting bracket 22 is mounted on the baffle 10. The diffuse reflection photoelectric switch 21 is mounted on one end of the mounting bracket 22, and the detection end of the diffuse reflection photoelectric switch 21 is directed toward the corrugated cardboard 9. The alarm 23 is mounted on the other end of the mounting bracket 22. The diffuse reflection photoelectric switch 21 and the alarm 23 are connected by a relay circuit. The alarm 23 is electrically connected to the controller. The bottom corrugated cardboard 9 is fed from the discharge channel 11 to the printing station by the conveyor belt 4. The diffuse reflection photoelectric switch 21 monitors the minimum number of cardboard stacks in the paper feeding section. The alarm 23, which is monitored by voice, reminds the cardboard stacking operator to replenish the cardboard in time. This avoids the quality problem of slotting misalignment caused by the cardboard being delayed or unstable due to insufficient cardboard or the cardboard being fed out, thus reducing process consumption.

[0022] Furthermore, the relay circuit includes a changeover switch SW, a relay's closing terminal KA, and a normally open terminal KA11. The changeover switch SW and the diffuse reflection photoelectric switch 21 are connected in series between the positive and negative terminals of the power supply. The closing terminal KA is connected in parallel between the positive terminal of the power supply and the enable terminal of the diffuse reflection photoelectric switch 21. The normally open terminal KA11 and the alarm 23 are connected in series between the positive and negative terminals of the power supply. When the changeover switch SW is set to position "2", the control device is put into operation. The diffuse reflection photoelectric switch 21 monitors the height of the corrugated cardboard 9 in real time. When the diffuse reflection photoelectric switch 21 monitors the area above the lowest position of the cardboard, the diffuse reflection photoelectric switch 21 activates, energizing the intermediate relay KA, opening the normally open terminal KA11, and the alarm 23 does not sound. When the diffuse reflection photoelectric switch 21 monitors the area below the lowest position, the diffuse reflection photoelectric switch 21 does not activate, the intermediate relay KA is de-energized and does not activate, the normally open terminal KA11 closes, and the voice-monitored alarm 23 is energized to sound, reminding the operator to replenish the cardboard.

[0023] Furthermore, a support plate 13 is provided on the top of the baffle 10, and the mounting bracket 22 is installed on the support plate 13 for easy installation and arrangement.

[0024] Furthermore, the baffle 10 is provided with a prompt strip 12 for indicating the lowest position of the corrugated cardboard 9, which makes it easy for operators to mark the lowest position and to control the pace of adding corrugated cardboard 9 according to the prompt strip 12.

[0025] In this embodiment, a printing press paper feeding device with monitoring and pressing functions is used. The operator first places a small amount of corrugated cardboard 9 on the auxiliary platform 7. With the assistance of the rollers 8, the operator pushes the corrugated cardboard 9 onto the conveyor belt 4, and then stacks it. The auxiliary platform 7 effectively reduces the risk of the operator adding corrugated cardboard 9 while the belt is running. The upper corrugated cardboard 9 is blocked by the baffle, and the lower corrugated cardboard 9 is fed from the discharge channel 11 to the printing station by the conveyor belt 4. A diffuse reflection photoelectric switch 21 monitors the minimum amount of cardboard stacking in the paper feeding section, and a voice-monitored alarm 23 alerts the operator. The stacking operator replenishes cardboard promptly to avoid quality issues such as slotting misalignment caused by insufficient cardboard or replenishing cardboard after it has been completely fed, which can lead to sluggish or unstable cardboard feeding. This reduces process consumption. Simultaneously, the alarm 23 sends a signal to the controller, which controls the linear guide 31 to move, causing the telescopic cylinder 32 and pressure plate 33 towards the cardboard. After the telescopic cylinder 32 reaches the predetermined position, it pushes the pressure plate 33, applying downward pressure to the remaining corrugated cardboard 9. This increases friction with the belt, effectively preventing cardboard feeding sluggishness and ensuring stable equipment operation. This invention provides a printing press paper feeding device with monitoring and pressing functions, preventing quality problems caused by insufficient cardboard, reducing process consumption, and featuring wide applicability and strong practicality.

[0026] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present utility model. These modifications and improvements will not affect the effectiveness of the present utility model or the practicality of the patent.

Claims

1. A paper feeding device for a printing press with monitoring and clamping functions, characterized in that, The system includes a feeding platform (1), on which a conveyor belt (4) for conveying corrugated cardboard (9) is provided. Both ends of the conveyor belt (4) are rotatably mounted on the feeding platform (1) via rotating shafts (5). One end of one of the rotating shafts (5) is provided with a drive motor (6). One end of the feeding platform (1) is provided with an auxiliary platform (7). Multiple rollers (8) are rotatably mounted on the auxiliary platform (7). The other side of the feeding platform (1) is provided with a baffle (10) arranged perpendicular to it. A discharge channel (11) is provided between the baffle (10) and the feeding platform (1). Both sides of the feeding platform (1) are provided with symmetrically arranged pressing devices (3). The top of the baffle (10) is provided with a monitoring and alarm device (2). Both the pressing device (3) and the monitoring and alarm device (2) are electrically connected to the controller.

2. The paper feeding device for a printing press with monitoring and pressing function according to claim 1, characterized in that, The pressing device (3) includes an L-shaped mounting bracket (34), a linear guide rail (31), a telescopic cylinder (32), and a pressure plate (33). The L-shaped mounting bracket (34) is arranged on one side of the loading platform (1). The linear guide rail (31) is mounted on the L-shaped mounting bracket (34). The bottom of the telescopic cylinder (32) is mounted on the slider of the linear guide rail (31). The pressure plate (33) is vertically connected to the output end of the telescopic cylinder (32).

3. A paper feeding device for a printing press with monitoring and pressing function according to claim 1, characterized in that, The monitoring and alarm device (2) includes a mounting bracket (22), a diffuse reflection photoelectric switch (21), and an alarm (23). The mounting bracket (22) is mounted on a baffle (10). The diffuse reflection photoelectric switch (21) is mounted on one end of the mounting bracket (22), and the detection end of the diffuse reflection photoelectric switch (21) is directed toward the corrugated cardboard (9). The alarm (23) is mounted on the other end of the mounting bracket (22). The diffuse reflection photoelectric switch (21) and the alarm (23) are connected by a relay circuit. The alarm (23) is electrically connected to the controller.

4. A paper feeding device for a printing press with monitoring and pressing function according to claim 3, characterized in that, The relay circuit includes a changeover switch (SW), a relay pull-in terminal (KA), and a normally open terminal (KA11); the changeover switch (SW) and the diffuse reflection photoelectric switch (21) are connected in series between the positive and negative terminals of the power supply, the pull-in terminal (KA) is connected in parallel between the positive terminal of the power supply and the enable terminal of the diffuse reflection photoelectric switch (21), and the normally open terminal (KA11) and the alarm (23) are connected in series between the positive and negative terminals of the power supply.

5. A paper feeding device for a printing press with monitoring and pressing function according to claim 3, characterized in that, The baffle (10) is provided with a support plate (13) on top, and the mounting bracket (22) is mounted on the support plate (13).

6. A paper feeding device for a printing press with monitoring and pressing function according to claim 1, characterized in that, The baffle (10) is provided with a reminder strip (12) for indicating the lowest position of the corrugated cardboard (9).

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