Web press kick-out device

Abstract

The application discloses a kick-out device of a web press, and aims to solve the technical problems that the existing kick-out device is difficult to precisely remove waste book stickers and lacks adaptability. The application comprises a linear conveyor belt, a suction extraction mechanism and a conveying mechanism. The suction extraction mechanism is arranged above the linear conveyor belt, and the conveying mechanism is arranged on one side of the suction extraction mechanism. The suction extraction mechanism comprises a transmission shaft, a suction wheel and a suction seat. The suction wheel is connected to the transmission shaft, the transmission shaft is driven to rotate by a power component, the suction seat and the transmission shaft are connected through a bearing, and a suction nozzle is connected to the suction seat. An air suction channel that is communicated with the suction nozzle is arranged in the suction wheel, and air suction holes that are communicated with the air suction channel are arranged on the outer circumferential surface of the suction wheel. The conveying mechanism is connected to the suction wheel. The application has the beneficial technical effects that waste book stickers can be precisely extracted at high speed and high frequency, the book stickers can be stably conveyed, and the kick-out device is suitable for small book stickers.

Description

Technical Field

[0001] This invention relates to the field of web printing press technology, and more specifically to a waste removal device for web printing presses. Background Technology

[0002] A roll-to-roll printing press includes paper feeding, printing, and folding sections. Its output product is book stickers formed by folding. The folding rollers or pattern rollers of the roll-to-roll printing press fold the book stickers one by one onto the conveyor belt and output them outward in a fish-scale pattern and connect to the packing machine. With the development of visual technology and the increasing demands for print quality, online visual quality inspection devices are being installed on web printing presses more and more widely. However, the problem of how to accurately remove defective or substandard products remains. Currently, common methods include marking defective products and manually removing them, or using air blowing or flipping to kick out defective products along with multiple bookmarks in front and behind them. However, neither of these methods is ideal. When false detections occur, marking will cause additional defective products, and manually removing defective products is labor-intensive. After removing defective products along with multiple bookmarks, manual inspection is required to put good products back into the good product pile, which also increases the workload. Furthermore, removing multiple bookmarks can cause the originally neatly arranged fish-scale bookmarks to become crooked, clogged, or even damaged, especially for 32mo double-page bookmarks, which are even more difficult to remove due to their small front and back dimensions. Summary of the Invention

[0003] This invention provides a waste removal device for a roll-to-roll printing press to solve the technical problems of existing waste removal devices being unable to accurately remove waste book stickers and lacking adaptability.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] Design a waste removal device for a roll paper printing machine, including a straight conveyor belt, a suction extraction mechanism, and a conveying mechanism. The suction extraction mechanism is located above the straight conveyor belt and is used to extract waste book stickers on the straight conveyor belt and transfer them to the conveying mechanism.

[0006] The suction extraction mechanism includes a drive shaft, a suction wheel, and a suction seat. The suction wheel is connected to the drive shaft, which is driven to rotate by a power component. The suction seat and the drive shaft are connected by a bearing. An air intake nozzle is connected to the suction seat. The suction wheel has an internal suction channel that communicates with the air intake nozzle. The outer circumferential surface of the suction wheel has suction holes that communicate with the suction channel. The conveying mechanism is connected to the suction wheel.

[0007] Furthermore, the linear conveyor belt is driven by a first motor, and the power component is a second motor. Both the first motor and the second motor can be one of an adjustable speed servo motor, a frequency converter motor, a stepper motor, or a speed-regulating motor.

[0008] Furthermore, the suction wheel can be one or two or more arranged side by side.

[0009] Furthermore, the air intake nozzle is located on the side of the air intake seat, and the air intake nozzle and the air intake wheel are slidably connected. The air intake nozzle and the air intake seat are either two separate pieces or integrally formed.

[0010] Furthermore, the suction seat is provided with an arc groove to limit the suction angle to 15°-90°.

[0011] Furthermore, the suction seat is fixedly connected to a solenoid valve, which is connected to a negative pressure device via an air pipe.

[0012] Furthermore, a pressure roller is provided above the linear conveyor belt to press the book stickers. The pressure roller is located at the end of the next book sticker after the waste book sticker when the waste book sticker is extracted. Alternatively, the linear conveyor belt is provided with a suction chamber at the end of the next book sticker after the waste book sticker when the waste book sticker is extracted to adsorb the end of the book sticker behind the waste book sticker. The linear conveyor belt is a perforated belt.

[0013] Furthermore, the conveying mechanism is a clamping belt or a suction conveyor belt.

[0014] Furthermore, the clamping belt includes a drive wheel, which is fixedly connected to the transmission shaft, or the drive wheel is the suction wheel and the width of the clamping belt is limited to not obstructing the suction holes.

[0015] Furthermore, a waste bin is provided at the end of the conveying mechanism, and the conveying mechanism can convey waste book stickers to the waste bin in either forward or backward.

[0016] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0017] 1. This invention rapidly extracts defective book tags from the book tag queue along the book tag running direction, enabling precise removal of continuous and high-frequency defective products, such as book tags with one defective tag every other day, in high-speed environments.

[0018] 2. This invention can remove waste book pages on a straight conveyor belt without changing the shape of the conveyor belt. It can not only remove waste pages of octavo and 16mo formats, but also remove waste pages of small-sized 32mo double-page book pages. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the waste removal device for a roll paper printing machine according to the present invention.

[0020] Figure 2 for Figure 1 Cross-sectional view of AA.

[0021] Figure 3 for Figure 2 A magnified view of D.

[0022] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the waste removal device for a roll paper printing machine according to the present invention.

[0023] Figure 5 for Figure 4 Cross-sectional view of BB in the middle.

[0024] Figure 6 for Figure 5 A magnified view of E in the middle.

[0025] Figure 7 This is a schematic diagram of the structure of Embodiment 3 of the waste removal device for a roll paper printing machine according to the present invention.

[0026] Figure 8 for Figure 7 Cross-sectional view of CC.

[0027] In the diagram, 100 is the conveyor belt, 101 is the flat belt, 101A is the perforated flat belt, and 102 is the motor; 200 is the book sticker queue, 201 is the good book sticker, 202 is the waste book sticker, and 203 is the good book sticker; 300 is the suction wheel assembly, 301 is the motor, 302 is the drive shaft, 303, 303A, and 303B are the suction wheels, 304 is the suction nozzle, 305 and 305A are the suction seats, 306 is the solenoid valve, 307 is the air pipe, 308 is the suction channel, 309 is the suction hole, and P is the suction angle; 400 and 400A are the clamping belts, 400B is the suction conveyor belt, 401B is the suction belt, and 402B is the auxiliary paper receiving belt; 500 is the pressure roller, and 500A is the suction chamber; 600 is the waste bin. Detailed Implementation

[0028] The specific embodiments of the present invention will be described below with reference to the accompanying drawings and examples. However, the following examples are only used to illustrate the present invention in detail and do not limit the scope of the present invention in any way.

[0029] Example 1: A waste removal device for a web-based printing press, see [link / reference] Figures 1 to 3 A conveyor belt 100 is positioned in the middle of the book sticker conveyor line and is driven by a motor 102. The conveyor belt 100 is a linear conveyor belt, and the motor 102 is one of an adjustable-speed servo motor, frequency converter motor, stepper motor, or speed-regulating motor, preferably a servo motor. The linear speed of the conveyor belt 100 can track the linear speed of the book sticker conveyor line and can be adjusted proportionally relative to the linear speed of the book sticker conveyor line. The purpose of adjusting the linear speed of the conveyor belt 100 is to adjust the spacing of the book stickers, providing space and time for the suction wheel to extract waste book stickers.

[0030] The book sticker queue 200 is conveyed in a fish-scale pattern, where 201, 202, and 203 are three adjacent book stickers. It is assumed that 202 is the book sticker that needs to be discarded. A suction wheel assembly 300 is arranged parallel above the conveyor belt 100. 301 is one of an adjustable-speed servo motor, frequency converter motor, stepper motor, or speed-regulating motor, preferably a servo motor. Motor 301 is connected to the drive shaft 302, and the suction wheel 303 is fixedly connected to the drive shaft 302. Motor 301 drives the drive shaft 302 and the suction wheel 303 to rotate. The rotation direction of the suction wheel 303 is set so that the movement direction of the lower apex of the suction wheel 303 is the same as the movement direction above the conveyor belt 100, i.e., the movement direction of the book sticker queue. The suction seat 305 is loosely fitted onto the drive shaft 302 via bearings. Suction wheels 303 are positioned on both sides of the suction seat 305. A suction channel is provided inside the suction seat 305, and suction nozzles 304 are fixedly connected to both sides, communicating with the suction channel. The suction nozzles 304 and the suction wheels 303 are slidably connected to each other. A solenoid valve 306 is fixedly connected to one end of the suction seat 305, and the solenoid valve 306 is connected to a negative pressure device via an air pipe 307. Multiple suction holes 309 are arranged circumferentially on the outer circumference of the suction wheel 303. A transverse suction channel 308 is provided inside the suction wheel 303. Side suction holes are arranged circumferentially on one side of the suction wheel 303, corresponding one-to-one with the suction holes 309 on the outer circumference, so that the side suction holes, suction channel 308 and suction holes 309 are interconnected. The side suction holes are connected to the suction nozzle 304, the suction channel in the suction seat 305 and the negative pressure device, which are used to transmit negative pressure to the suction holes on the outer circumference to adsorb the book stickers.

[0031] The suction seat 305 has an arc groove inside, so that the side suction area is set at a certain angle P, which is between 15° and 90°. The suction nozzle 304 is also set with the same angle P. The side of the suction wheel 303 and the suction nozzle 304 are in contact and sliding connection. The suction hole on the side of the suction wheel 303 is connected to the negative pressure device within the angle P range. In this way, regardless of whether the suction wheel 303 rotates or not, when the solenoid valve 306 opens the negative pressure channel, the outer circle suction hole of the suction wheel 303 is connected to the negative pressure within the angle P range to generate the suction function. When it is necessary to remove waste book stickers, the solenoid valve 306 opens the negative pressure channel, the suction wheel 303 rotates at high speed and sucks up the book stickers and rotates them upwards and hands them over to the conveyor belt 400, which quickly pulls the waste book stickers out of the waste queue and sends them into the waste bin 600 to complete the waste removal action.

[0032] The drive wheel of the conveyor belt 400 is fixedly connected to the transmission shaft 302. The linear velocity of the conveyor belt 400 is set to be the same as the surface linear velocity of the suction wheel 303. The lower apex of the suction wheel 303 is set to make slight contact with or have a small gap with the book sticker. When the solenoid valve 306 closes the negative pressure, the rapid rotation of the suction wheel 303 will not affect the book sticker queue. When the solenoid valve 306 opens the negative pressure channel, the suction wheel 303 can adsorb waste book stickers and drive them to rotate upward. The suction wheel 303 can be set as one or two or more arranged in parallel. In this example, two are preferred. When the suction wheel 303 adsorbs waste book stickers 202, the waste book stickers 202 are lifted a small distance. The contact area between the waste book stickers 202 and the book stickers 203 in front is much smaller than the contact area between the book stickers 203 and the book stickers further ahead and the 100 conveyor belt. Therefore, the suction wheel 303's extraction action on the waste book stickers 202 has virtually no impact on the book stickers 203.

[0033] However, the waste book sticker 202 and the book sticker 201 behind it have a considerable contact area. In order to prevent the suction wheel 303 from causing the book sticker 201 to move and become misaligned due to the extraction action of the waste book sticker 202, which would affect the stability of the book sticker queue, a pressure wheel 500 is set at the tail of the book sticker 201 to press the book sticker 201 onto the conveyor belt 100 to ensure the stable operation of the book sticker queue.

[0034] Example 2: See Figures 4 to 6 The difference between Example 1 and Example 2 is that in Example 1, the two parallel suction holes 309 are connected together by a groove on the outer circumferential surface of the suction wheel 303, while in Example 2, the suction holes 309 are separate. In Example 1, the drive wheel of the conveyor belt 400 is fixedly connected to the transmission shaft 302, while in Example 2, the drive wheel of the conveyor belt 400A and the suction wheel 303A are combined into one, and the belt body is directly wound around the suction wheel 303A, with the belt width limited to not obstructing the suction holes. Furthermore, in Example 1, the conveyor belt 400 moves the waste book stickers forward to the waste bin 600, while in Example 2, it moves the waste book stickers backward to the waste bin 600.

[0035] Example 3: See Figure 7 and Figure 8 The difference from Example 1 is that the conveying mechanism is a suction conveyor belt 400B and a suction belt 401B with negative pressure adsorption function. The suction belt 401B can receive the waste book stickers adsorbed by the suction wheel 303 and send the waste book stickers to the waste bin 600 with the cooperation of the auxiliary paper receiving belt 402B.

[0036] In this embodiment, there is one suction wheel, namely suction wheel 303B on the right side of suction base 305A. The suction nozzle 304 is fixed to the right side of suction base 305A. Similarly, the suction nozzle 304 and the side of suction wheel 303B are slidably connected.

[0037] In addition, this embodiment uses negative pressure instead of pressure roller 500, and sets suction chamber 500A below the tail of book sticker 201. The negative pressure is used to adsorb the tail of book sticker 201 onto flat belt 101 to ensure stable operation of book sticker queue.

[0038] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. However, those skilled in the art will understand that, without departing from the spirit of the present invention, various specific parameters in the above embodiments can be changed to form multiple specific embodiments, all of which are common variations of the present invention, and will not be described in detail here.

Claims

1. A waste removal device for a web-based paper printing press, characterized in that, The system includes a linear conveyor belt, a suction extraction mechanism, and a conveying mechanism. The suction extraction mechanism is positioned above the linear conveyor belt, and the conveying mechanism is positioned to one side of the suction extraction mechanism. The suction extraction mechanism is used to extract waste book stickers from the linear conveyor belt and transfer them to the conveying mechanism. The suction extraction mechanism includes a drive shaft, a suction wheel, and a suction seat. The suction wheel is connected to the drive shaft, which is driven to rotate by a power component. The suction seat and the drive shaft are connected by a bearing. A suction nozzle is connected to the suction seat. The suction wheel has a suction channel communicating with the suction nozzle inside, and suction holes communicating with the suction channel are provided on the outer circumference of the suction wheel. The conveying mechanism is connected to the suction wheel.

2. The waste removal device for a web-based printing press according to claim 1, characterized in that, The linear conveyor belt is driven by a first motor, and the power component is a second motor. Both the first motor and the second motor can be one of an adjustable speed servo motor, a frequency converter motor, a stepper motor, or a speed-regulating motor.

3. The waste removal device for a web-fed printing press according to claim 1, characterized in that, The suction wheel can be one or two or more arranged side by side.

4. The waste removal device for a web-based printing press according to claim 3, characterized in that, The air intake nozzle is located on the side of the air intake base. The air intake nozzle and the air intake wheel are slidably connected. The air intake nozzle and the air intake base can be set separately or integrally formed.

5. The waste removal device for a web-based printing press according to claim 1, characterized in that, The suction seat is provided with an arc groove to limit the suction angle to 15°-90°.

6. The waste removal device for a web-based printing press according to claim 1, characterized in that, The suction seat is connected to a solenoid valve, which is connected to a negative pressure device via an air pipe.

7. The waste removal device for a web-based printing press according to claim 1, characterized in that, The linear conveyor belt is equipped with a pressure roller above it to press the book stickers. The pressure roller is located at the end of the next book sticker after the waste book sticker when it is being removed. Alternatively, the linear conveyor belt is equipped with a suction chamber at the end of the next book sticker after the waste book sticker when it is being removed, for adsorbing the end of the book sticker behind the waste book sticker. The linear conveyor belt is a perforated belt.

8. The waste removal device for a web-based printing press according to claim 1, characterized in that, The conveying mechanism is a clamping belt or a suction conveyor belt.

9. The waste removal device for a web-based printing press according to claim 8, characterized in that, The clamping belt includes a drive wheel, which is fixedly connected to the transmission shaft, or the drive wheel is the suction wheel and the width of the clamping belt is limited to not obstructing the suction holes.

10. The waste removal device for a web-based printing press according to claim 8, characterized in that, A waste bin is provided at the end of the conveying mechanism.

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