Waste kicking mechanism of web press

Abstract

The utility model discloses a waste kicking mechanism of a web press. The waste kicking mechanism comprises an air suction wheel, a negative pressure control assembly and a transmission assembly. The rear first conveying belt is higher than the front second conveying belt, and the top point of the air suction wheel is roughly as high as the upper plane of the second conveying belt. Corresponding air suction holes are formed in the side surface of the air suction wheel and are communicated with the negative pressure control assembly; the negative pressure control assembly controls on-off of negative pressure generated by the air pump or the fan through the electromagnetic valve, and the transmission assembly drives the air suction wheel to rotate reversely. During working, the stickers are naturally separated in the process of falling from the first conveying belt to the second conveying belt, the detection system triggers the electromagnetic valve to start negative pressure after identifying waste products, the air suction wheel adsorbs the tail portions of the waste stickers and rapidly pulls the waste stickers away to a collecting area, and normal stickers keep continuous and stable conveying due to the fact that the negative pressure is not triggered. The problems of low elimination precision, poor queue stability and insufficient adaptability in the prior art are solved.

Description

Technical Field

[0001] This utility model belongs to the field of roll paper printing machinery technology, specifically a waste removal mechanism for roll paper printing machines, and particularly relates to a precise book sticker removal technology based on reverse suction wheel and negative pressure control, which is used in conjunction with an online quality inspection system. Background Technology

[0002] In the book printing process of web-fed printing presses, the book pages output from the folding section are arranged in a fish-scale pattern on the conveyor belt. An online quality inspection system is required to inspect the pages in real time and reject defective pages. Currently, the commonly used methods for rejecting defective book pages in industrial production mainly include the following technical solutions:

[0003] Manual marking and manual rejection: A visual inspection system is used to print marks on defective labels, which are then manually identified and removed. This method requires a large amount of manpower and is prone to additional waste due to mis-marking. It is difficult to adapt to the automation requirements of high-speed printing production lines, especially in continuous production scenarios. Manual operation is inefficient and labor-intensive, and cannot meet the requirements of high-quality and high-volume production.

[0004] Air-blowing or flip-plate rejection: Using an air-blowing device or flip-plate mechanism, defective products are rejected along with multiple book stickers preceding and following them upon detection. While this achieves a degree of automation, it disrupts the fish-scale arrangement of the book stickers, leading to sticker misalignment, blockage, and even damage to the conveyor belt. Furthermore, manual inspection of mistakenly rejected qualified products and reorganization are required after rejection, increasing subsequent processing costs. In addition, for consecutive defective products or multiple defective products with short intervals (e.g., one defective product every other day), the existing mechanism cannot accurately locate individual defective book stickers, and the rejection action easily interferes with adjacent qualified products, causing instability in the production line operation.

[0005] The core flaw of existing rejection technologies lies in:

[0006] Insufficient positioning accuracy: It is impossible to accurately locate a single waste book sticker in a continuously running fish-scale book sticker queue, which means that the rejection action either relies on manual intervention or the rejection range is too large (including multiple book stickers).

[0007] Removing book tags that interfere with normal book tag formation: Whether using air blowing or flipping methods, mechanical or airflow interference is applied to the book tag queue, which can easily disrupt the stable arrangement of book tags and affect subsequent conveying and packaging processes.

[0008] Poor adaptability: Existing mechanisms cannot respond quickly and handle continuously or short-interval waste products that may occur during high-speed printing, resulting in low rejection efficiency or high rejection error rate.

[0009] To address the aforementioned issues, existing technologies urgently need a mechanism that can accurately locate and remove individual waste book stickers without interfering with the normal operation of the book stickers. This would solve the problems of inaccurate removal, easy interference with the queue, and poor adaptability in existing technologies, and achieve high-speed and stable online removal operations. Utility Model Content

[0010] In view of this, the purpose of this utility model is to overcome the technical difficulties in the removal of waste book stickers in the existing related technologies, such as inaccurate positioning, easy interference with normal book sticker queues, and difficulty in handling continuous waste or multiple waste sheets with short intervals (such as one waste sheet every other day). It provides a waste removal mechanism for roll paper printing presses that uses the height difference between the reverse suction wheel and the adjacent conveyor belt, and uses negative pressure to adsorb the tail of the book sticker and rotate it in the opposite direction to accurately remove the waste. This achieves accurate positioning and independent removal of single waste book stickers; the removal process does not affect the stable operation of adjacent book stickers; and it enables efficient handling of continuous waste or short-interval waste in high-speed printing scenarios, thereby solving the problems of low removal accuracy, poor queue stability, and insufficient adaptability in the existing technologies.

[0011] To achieve the above objectives, this utility model provides a waste removal mechanism for a roll-to-roll printing machine, comprising a suction wheel, a negative pressure control component, and a transmission component. The suction wheel is disposed between two adjacent conveyor belts, which include a first conveyor belt at the rear and a second conveyor belt at the front, with the first conveyor belt being higher than the second conveyor belt. The apex of the suction wheel is approximately level with the upper plane of the second conveyor belt, and is used to adsorb the tail of the book sticker and rotate it in the opposite direction to remove waste book stickers. The negative pressure control component includes a solenoid valve and an air source, and the solenoid valve is used to switch the negative pressure adsorption of the suction wheel on and off. The transmission component is connected to the suction wheel and is used to drive the suction wheel to rotate in the opposite direction.

[0012] Furthermore, the suction wheel has multiple outer circumferential suction holes arranged in the outer circumference, and one side of the suction wheel has side suction holes arranged in the outer circumferential direction, corresponding one-to-one with the outer circumferential suction holes; the side suction holes are connected to the negative pressure control component and are used to transmit negative pressure to the outer circumferential suction holes to adsorb the book stickers.

[0013] Furthermore, the negative pressure control component includes an air intake seat and an air intake nozzle. The air intake nozzle is disposed on the air intake seat and fits against the side of the suction wheel. The air intake seat is fixedly connected to the bracket and loosely fitted to the outside of the drive shaft through a bearing. When the suction wheel rotates, the air intake nozzle maintains a sealed connection with the side air intake hole.

[0014] Furthermore, the suction wheel has multiple outer circumferential suction holes arranged in the outer circumference, and a part of the suction wheel has a ring structure; the outer circumferential suction holes connect the inner and outer rings, and the inner ring is connected to the negative pressure control component to transmit negative pressure to the outer circumferential suction holes to adsorb book stickers; the outer circumferential suction holes can connect to negative pressure from the inner ring of the suction wheel.

[0015] Furthermore, the negative pressure control component includes an air intake seat and an air intake nozzle. The air intake nozzle is disposed on the air intake seat and fits against the inner ring of the suction wheel. The air intake seat is fixedly connected to the bracket and loosely fitted to the outside of the drive shaft through a bearing. When the suction wheel rotates, the air intake nozzle and the air intake hole maintain a sealed connection.

[0016] Furthermore, the transmission assembly includes a drive motor and a transmission shaft. The drive motor is connected to the transmission shaft via a coupling, gear set, sprocket set, or pulley set. The transmission shaft is fixedly connected to the suction wheel and is used to drive the suction wheel to rotate in the opposite direction at a constant or adjustable speed.

[0017] Furthermore, the suction wheel can be a single one or multiple suction wheels arranged in parallel; when there are multiple suction wheels, the multiple suction wheels can achieve synchronous reverse rotation through the same drive shaft or synchronous transmission mechanism.

[0018] Furthermore, the air source includes an air pump or a fan, and the air source is connected in sequence to the solenoid valve, the suction seat and the suction nozzle through an air pipe to provide negative pressure airflow to the suction hole of the suction wheel; the solenoid valve receives the electrical signal from the online quality detection system and controls the on / off of the negative pressure airflow in real time.

[0019] Furthermore, the air intake nozzle on the air intake seat is located above the air intake seat. When the suction wheel rotates, the side air intake holes rotate sequentially to the top and connect with the air intake nozzle, ensuring that the upper air intake holes are connected to the negative pressure control component.

[0020] Furthermore, the height difference between the first conveyor belt and the second conveyor belt is H. The height of the top of the suction wheel is basically the same as the upper surface of the second conveyor belt and lower than the upper surface of the first conveyor belt. The value of H is in the range of 3cm≤H≤15cm to ensure that the tail of the book sticker accurately reaches the adsorption area of ​​the suction wheel during the fall, so that the suction wheel can adsorb and remove the waste book sticker.

[0021] The present invention, by adopting the above technical solution, has at least the following beneficial effects:

[0022] 1. Utilizing the stepped layout of adjacent conveyor belts, book stickers naturally separate as they fall from a higher to a lower position, creating a window of time and space for grabbing waste products. Combined with the dual-hole corresponding structure of the reverse suction wheel, the detection mechanism controls the negative pressure through a solenoid valve, precisely adsorbing the tail of waste book stickers and quickly extracting them. This mechanism can operate stably during the printing process and is particularly suitable for high-frequency rejection scenarios such as continuous waste or "one-every-one-waste" rejection, significantly improving rejection efficiency.

[0023] 2. The reverse suction wheel design applies reverse pulling force only to the target waste, without affecting the stable operation of the book sticker queue; the height difference of the conveyor belt allows the book stickers to naturally separate at the tail end during transport, avoiding mechanical collisions or airflow interference. Compared with traditional rejection methods, this mechanism ensures a continuous and stable fish-scale arrangement of book stickers, reducing subsequent manual processing steps and ensuring continuous operation of the production line.

[0024] 3. The integrated structural design occupies little space and can be directly embedded between the folding section and conveyor belt of existing roll-to-roll printing presses. The adjustable layout of multiple suction wheels in parallel adapts to different sizes of book covers, and the negative pressure system can reliably adsorb various types of paper, meeting the diverse waste removal needs of book and magazine printing production lines, making the equipment highly versatile. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a side view of the waste-kicking mechanism of this utility model;

[0027] Figure 2 yes Figure 1 A sectional view;

[0028] Figure 3 This is a schematic diagram showing the coordination between the waste removal mechanism and the front and rear conveyor belts of the production line.

[0029] In the diagram: 100, suction wheel; 200, negative pressure control component; 201, air pump or fan; 202, air pipe; 203, solenoid valve; 204, suction seat; 205, suction nozzle; 300, transmission component; 301, motor; 302, drive shaft; 400, bracket. Detailed Implementation

[0030] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this invention as detailed in the appended claims.

[0031] Example 1

[0032] Removing defective bookmarks from a continuous, smoothly running bookmarking system in a fish-scale pattern is extremely difficult. This presents three challenges: first, accurately locating the defective bookmarks; second, picking up only the defective bookmarks without disrupting the smooth running of other bookmarks; and third, the problem of removing defective bookmarks when there are consecutive defective bookmarks or multiple defective bookmarks with very short intervals, such as one defective bookmark every other day. Please refer to [link / reference]. Figure 1 , Figure 2 and Figure 3 As shown, this embodiment provides a waste removal mechanism for a roll-to-roll printing machine, including a suction wheel 100, a negative pressure control component 200, and a transmission component 300. The suction wheel 100 is disposed between two adjacent conveyor belts, which include a first conveyor belt at the rear and a second conveyor belt at the front. The height of the first conveyor belt is higher than that of the second conveyor belt. The apex height of the suction wheel 100 is approximately equal to the upper plane of the second conveyor belt, and it is used to adsorb the tail of the book sticker and rotate in the opposite direction to remove the waste book sticker. The negative pressure control component 200 includes a solenoid valve 203 and an air source 201. The solenoid valve 203 is used to switch the negative pressure adsorption of the suction wheel 100 on and off. The transmission component 300 is connected to the suction wheel 100 and is used to drive the suction wheel 100 to rotate in the opposite direction.

[0033] In one embodiment, the suction wheel 100 in this embodiment has a plurality of outer circumferential suction holes arranged in the outer circumference, and a side suction hole corresponding to the outer circumferential suction hole is arranged in the circumferential direction on one side of the suction wheel 100; the side suction hole is connected to the negative pressure control component 200 and is used to transmit negative pressure to the outer circumferential suction hole to adsorb the book sticker.

[0034] In one embodiment, the negative pressure control component 200 in this embodiment includes an air intake seat 204 and an air intake nozzle 205. The air intake nozzle 205 is disposed on the air intake seat 204 and fits against the side of the suction wheel 100. The air intake seat 204 is fixedly connected to the bracket 400 and loosely fitted to the outside of the drive shaft 302 through a bearing. When the suction wheel 100 rotates, the air intake nozzle 205 maintains a sealed connection with the side air intake hole.

[0035] In one embodiment, the suction wheel in this embodiment has multiple outer circumferential suction holes arranged in the outer circumference, and a part of the suction wheel has a ring structure; the outer circumferential suction holes connect the inner and outer rings, and the inner ring is connected to the negative pressure control component to transmit negative pressure to the outer circumferential suction holes to adsorb the book stickers; the outer circumferential suction holes can connect to the negative pressure from the inner ring of the suction wheel.

[0036] In one embodiment, the negative pressure control component includes an air intake seat and an air intake nozzle. The air intake nozzle is disposed on the air intake seat and fits against the inner ring of the suction wheel. The air intake seat is fixedly connected to the bracket and loosely fitted to the outside of the drive shaft through a bearing. When the suction wheel rotates, the air intake nozzle and the air intake hole maintain a sealed connection.

[0037] In one embodiment, the transmission assembly 300 in this embodiment includes a drive motor 301 and a transmission shaft 302. The drive motor 301 is connected to the transmission shaft 302 via a coupling, gear set, sprocket set or pulley set. The transmission shaft 302 is fixedly connected to the suction wheel 100 and is used to drive the suction wheel 100 to rotate in the opposite direction at a constant or adjustable speed.

[0038] In one embodiment, the suction wheel 100 in this embodiment is a single one or multiple suction wheels arranged in parallel; when there are multiple suction wheels 100, the multiple suction wheels 100 achieve synchronous reverse rotation through the same drive shaft 302 or synchronous transmission mechanism.

[0039] In one embodiment, the air source 201 in this embodiment includes an air pump or a fan. The air source 201 is connected in sequence to the solenoid valve 203, the suction seat 204 and the suction nozzle 205 through the air pipe 202, and is used to provide negative pressure airflow to the suction hole of the suction wheel 100. The solenoid valve 203 receives the electrical signal of the online quality detection system and controls the on / off of the negative pressure airflow in real time.

[0040] In one embodiment, the suction nozzle 205 on the suction seat 204 is located above the suction seat. When the suction wheel rotates, the side suction holes rotate to the top in sequence and connect with the suction nozzle, ensuring that the upper suction holes are connected to the negative pressure control component.

[0041] In one implementation, the height difference between the first conveyor belt and the second conveyor belt in this embodiment is H. The height of the apex of the suction wheel 100 is basically the same as the upper plane of the second conveyor belt and lower than the upper plane of the first conveyor belt. The value of H is in the range of 3cm≤H≤15cm, so as to ensure that the tail of the book sticker accurately reaches the adsorption area of ​​the suction wheel 100 during the fall, so that the suction wheel 100 can adsorb and remove the waste book sticker.

[0042] In this embodiment, the suction wheel 100 can adsorb the tail of the book sticker and rotate in the opposite direction to pull the waste book sticker out of the book sticker queue. The negative pressure control component 200 provides negative pressure to the suction wheel 100, and the solenoid valve 203 controls the opening and closing of the negative pressure. The solenoid valve 203 is controlled by the online quality detection system. The transmission component 300 provides power to the suction wheel 100.

[0043] The book label conveyor belt of a roll-to-roll printing press is often composed of multiple belt segments. The direction in which the book labels move is called the front, and the opposite direction is called the rear. The rear belt is called the first conveyor belt, and the front belt is called the second conveyor belt. A waste removal mechanism can be placed between the first and second conveyor belts, with the second conveyor belt positioned lower than the first, and the waste removal mechanism set at approximately the same height as the second conveyor belt. As the book labels move, they fall sequentially from the first conveyor belt to the second conveyor belt. The moment the tail of a book label falls from the higher first conveyor belt, its tail lands above the suction wheel 100. The book labels in front of it have already largely reached the second conveyor belt, while the head of the book label behind it has just landed on the second conveyor belt, and the tail is still on the first conveyor belt. At this moment, the suction wheel 100 draws in air and rotates rapidly in the opposite direction, quickly removing the book label from the book label queue without affecting the stability of the queue. Continuous removal is also possible. Since the first conveyor belt is higher than the second conveyor belt, the book stickers pulled out in the opposite direction will fall below the first conveyor belt. A collection basket or a horizontal belt can be set below the first conveyor belt to transport the book stickers out. The suction wheel 100 can be set to move in the opposite direction continuously, and the book stickers are extracted by controlling the on and off of the negative pressure. Because only the tail of the book sticker is in contact with the suction wheel 100 when it is running, and most of the book sticker is on the second conveyor belt, the reverse rotating suction wheel 100 has no impact on the stability of the book sticker running when there is no negative pressure.

[0044] like Figure 1 and Figure 2As shown, the suction wheel 100 has multiple suction holes arranged circumferentially on its outer circumference. These suction holes can be connected to a negative pressure system from the side of the suction wheel. In this example, a negative pressure control component is connected to the side. Multiple suction holes are arranged circumferentially on one side of the suction wheel 100, with each side suction hole corresponding to one of the outer circumferential suction holes. The suction holes connect to the negative pressure control component, generating inward negative pressure to adhere the book stickers. The suction wheel 100 can be a single unit or two or more units arranged side-by-side; this example uses two suction wheels arranged side-by-side. In the negative pressure control component 200, 201 is a negative pressure generating device, which can be an air pump or a fan, used to generate negative pressure. The air pump or fan 201 is connected to the solenoid valve 203 through the air pipe 202. The solenoid valve 203 is connected to the suction seat 204. The suction seat 204 is equipped with a suction nozzle 205. The suction nozzle 205 is located above the suction seat 204, and its side is close to and can move relative to the side of the suction wheel 100. The suction seat 204 is also connected and fixed to the bracket 400. 301 is the motor, which can be a regular motor, a speed-regulating motor, a frequency converter motor, or a servo motor, etc. The 301 motor is connected to the 302 drive shaft. The connection method can be a direct connection via a coupling, or a transmission method such as a gear, sprocket, or pulley. The 302 drive shaft is fixedly connected to the 100 suction wheel, while the 204 suction seat is loosely fitted onto the 302 drive shaft via a bearing. The 301 motor drives the 302 drive shaft and the 100 suction wheel to rotate. The 204 suction seat does not move but moves relative to the 100 suction wheel. When the 100 suction wheel rotates, the suction holes arranged circumferentially on its side connect sequentially to the ventilation holes of the 205 suction nozzle. In this way, when the suction wheel 100 is driven to rotate by the 301 motor, the suction holes on its outer circle are always in a negative pressure state, which facilitates the adsorption of book stickers.

[0045] Figure 3This example illustrates a waste removal mechanism installed on a printing press book cover conveyor belt. Both the first and second conveyor belts are part of the printing press book cover conveyor belt system. The first conveyor belt is located at the rear, and the second at the front. The waste removal mechanism is positioned between the first and second conveyor belts. The apex of the suction wheel 100 is approximately at the same height as the upper surface of the second conveyor belt, and simultaneously lower than the upper surface of the first conveyor belt by a certain height H. As the fish-scale-arranged book covers move from the first conveyor belt to the second conveyor belt, they fall sequentially from higher to lower positions. The tails of the book covers fall sequentially onto the upper part of the suction wheel 100. A, B, and C are three adjacent book covers. Assuming that the middle book cover B is a waste book cover that needs to be removed, book cover A first falls from the higher first conveyor belt to the lower second conveyor belt. The head of the book cover extends beyond the tail of the first conveyor belt and falls to the head of the second conveyor belt, where it is conveyed forward. Immediately afterwards, the tail of the book cover falls onto the suction wheel 100. Above 0, most of the book stickers are on the second conveyor belt. The reverse movement of the suction wheel 100 without negative pressure will not affect the operation of the book stickers. Then, the head of book sticker B also extends out of the tail end of the first conveyor belt and falls to the head end of the second conveyor belt and is conveyed forward by the second conveyor belt. Immediately afterwards, the tail of the book sticker falls above the suction wheel 100. When the online detection system detects that book sticker B is a waste book sticker, when the tail of the book sticker falls above the suction wheel 100, the detection system controls the solenoid valve 203 to open the negative pressure channel. The air inlet above the suction wheel 100 sucks up the tail of the book sticker and quickly conveys the book sticker in the reverse direction to the bottom of the first conveyor belt to complete the rejection of book sticker B. At this time, the head of book sticker C has just fallen onto the second conveyor belt, and the tail is still on the first conveyor belt, while book sticker A is basically all on the first conveyor belt. The rapid extraction of book sticker B by the suction wheel 100 will not affect the movement stability of book sticker A and book sticker C.

[0046] Example 2

[0047] Please see Figure 1 , Figure 2 and Figure 3 As shown, this embodiment provides a waste removal mechanism for a roll-to-roll printing machine, including a suction wheel 100, a negative pressure control component 200, a transmission component 300, and a support 400. The suction wheel 100 is disposed between two adjacent conveyor belts, which include a first conveyor belt at the rear and a second conveyor belt at the front. The height of the first conveyor belt is higher than that of the second conveyor belt. The apex height of the suction wheel 100 is approximately equal to the upper plane of the second conveyor belt, and it is used to adsorb the tail of the book sticker and rotate in the opposite direction to remove the waste book sticker. The negative pressure control component 200 includes a solenoid valve 203 and an air source 201. The solenoid valve 203 is used to switch the negative pressure adsorption of the suction wheel 100 on and off. The transmission component 300 is connected to the suction wheel 100 and is used to drive the suction wheel 100 to rotate in the opposite direction.

[0048] I. Component Structure and Connection Relationships

[0049] The suction wheel 100 has multiple outer circumferential suction holes, and one side has side suction holes that correspond one-to-one with the outer circumferential suction holes. The side suction holes are connected to the negative pressure control component 200 and are used to transfer negative pressure to the outer circumferential suction holes to adsorb book stickers. The suction wheel 100 can be a single wheel or multiple wheels arranged in parallel. In this embodiment, two suction wheels are arranged in parallel and rotate synchronously in opposite directions through the same drive shaft 302.

[0050] The negative pressure control component 200 includes an air pump or fan 201, an air pipe 202, a solenoid valve 203, an air intake seat 204, and an air intake nozzle 205. The air source 201 (air pump or fan 201) is connected sequentially to the solenoid valve 203, the air intake seat 204, and the air intake nozzle 205 via the air pipe 202, providing negative pressure airflow to the air intake holes of the suction wheel 100. The air intake nozzle 205 is disposed on the air intake seat 204 and fits against the side of the suction wheel 100; the air intake seat 204 is fixedly connected to the bracket assembly 400 and loosely fitted to the outside of the drive shaft 302 via a bearing. When the suction wheel 100 rotates, the air intake nozzle 205 maintains a sealed connection with the side air intake hole, ensuring continuous and stable transmission of negative pressure. The solenoid valve 203 receives electrical signals from the online quality detection system and controls the on / off state of the negative pressure airflow in real time.

[0051] The transmission assembly 300 includes a drive motor 301 and a transmission shaft 302. The drive motor 301 is connected to the transmission shaft 302 via a coupling, gear set, sprocket set, or pulley set. The transmission shaft 302 is fixedly connected to the suction wheel 100 and is used to drive the suction wheel 100 to rotate in the opposite direction at a constant or adjustable speed. The motor 301 can be a conventional motor, a speed-regulating motor, a frequency converter motor, or a servo motor.

[0052] The bracket 400 is used to fix the negative pressure control component 200 and support the entire waste removal mechanism. It is installed on the printing machine frame by bolts or buckles. The relative height of the suction wheel 100 and the conveyor belt can be adjusted to ensure that the top height of the suction wheel 100 is basically equal to the upper plane of the second conveyor belt and lower than the upper plane of the first conveyor belt.

[0053] The height difference between the first conveyor belt and the second conveyor belt is H, and the value of H is in the range of 3cm≤H≤15cm. This height difference design allows the tail of the book sticker to hang naturally to the adsorption area of ​​the suction wheel 100 during the process of falling from the first conveyor belt to the second conveyor belt, which facilitates precise adsorption.

[0054] The suction nozzle 205 on the suction seat 204 is located above the suction seat. When the suction wheel rotates, the side suction holes rotate to the top in sequence and connect with the suction nozzle, ensuring that the upper suction holes are connected to the negative pressure control component.

[0055] Work process and principles

[0056] Bookmark Conveying and Positioning: Bookmarks on the roll-to-roll printing press are arranged in a fish-scale pattern and conveyed from the rear first conveyor belt to the front second conveyor belt. Since the first conveyor belt is higher than the second conveyor belt, the head of the bookmark falls onto the second conveyor belt first and is conveyed forward, while the tail temporarily hangs in the gap between the first and second conveyor belts, exposed above the suction wheel 100 (e.g., ...). Figure 3 (Chinese A, B, C book templates).

[0057] Waste detection and negative pressure triggering: When the online quality detection system detects waste book stickers (such as Book B stickers), it sends an electrical signal to the solenoid valve 203. The solenoid valve 203 opens quickly, and the negative pressure airflow generated by the air source 201 is conducted through the air pipe 202, the air intake seat 204 and the air intake nozzle 205 to the outer circle air intake hole of the suction wheel 100, forming an adsorption force.

[0058] Waste removal action: The transmission component 300 drives the suction wheel 100 to rotate continuously in the opposite direction (opposite to the direction of book sticker conveying). When the suction wheel with the tail of the waste book sticker is adsorbed rotates in the opposite direction, the waste book sticker is quickly pulled out of the book sticker queue and falls into the collection area below the first conveyor belt (a collection basket or horizontal belt can be set for collection).

[0059] Uninterrupted operation of normal book stickers: For non-waste book stickers (such as A and C book stickers), since negative pressure adsorption is not triggered, the reverse rotation of the suction wheel 100 only contacts a very small area at the tail of the book sticker, and most of the book stickers are already on the second conveyor belt, so it will not affect its stable operation and ensure the continuity of the book sticker queue.

[0060] The design of the height difference H and the circumferentially even distribution of the suction holes ensure that the tail of the waste book sticker accurately enters the adsorption area, avoiding mis-adsorption or missed adsorption. The suction wheel 100 can maintain continuous reverse rotation, and the negative pressure is controlled by the solenoid valve 203 to achieve rapid removal of continuous waste or short-interval waste (such as one waste every other day). The bearing sleeve design of the suction seat 204 and the drive shaft 302 avoids interference between rotating and fixed parts, ensuring sealing stability during high-speed operation; the parallel arrangement of multiple suction wheels can adapt to book stickers of different widths, improving the versatility of the mechanism.

[0061] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A web press kick-out mechanism characterized by: The device comprises an air suction wheel, a negative pressure control component and a transmission component; the transmission component comprises a transmission shaft; the air suction wheel is arranged between two adjacent conveying belts, the two adjacent conveying belts comprising a first conveying belt at the rear and a second conveying belt at the front, the height of the first conveying belt being higher than that of the second conveying belt; the top of the air suction wheel is substantially at the same height as the upper plane of the second conveying belt, for adsorbing the tail part of a book sticker and rotating reversely to separate the waste book sticker; the negative pressure control component comprises a solenoid valve and an air source, the solenoid valve being used for switching on and off the negative pressure adsorption of the air suction wheel; the transmission component is connected with the air suction wheel, for driving the air suction wheel to rotate reversely.

2. The kick-to-disc mechanism of claim 1, wherein: A plurality of outer circumferential air suction holes are arranged on the outer circumference of the air suction wheel, and a side air suction hole corresponding to the outer circumferential air suction hole is arranged on the side of the air suction wheel; the side air suction hole is communicated with the negative pressure control component, for transmitting negative pressure to the outer circumferential air suction hole to adsorb the book sticker.

3. The kick-to-disc mechanism of claim 2, wherein: The negative pressure control component comprises an air suction seat and an air suction nozzle, the air suction nozzle being arranged on the air suction seat and being attached to the side of the air suction wheel; the air suction seat is fixedly connected to a support and is sleeved on the outside of the transmission shaft through a bearing, and when the air suction wheel rotates, the air suction nozzle is in sealed butt joint with the side air suction hole.

4. The kick-to-disc mechanism of claim 1, wherein: A plurality of outer circumferential air suction holes are arranged on the outer circumference of the air suction wheel, and a part of the air suction wheel is in a ring structure; the outer circumferential air suction hole penetrates the inner and outer rings, the inner ring is communicated with the negative pressure control component, for transmitting negative pressure to the outer circumferential air suction hole to adsorb the book sticker; the outer circumferential air suction hole can be connected with negative pressure from the inner ring of the air suction wheel.

5. The kick-to-disc mechanism of claim 4, wherein: The negative pressure control component comprises an air suction seat and an air suction nozzle, the air suction nozzle being arranged on the air suction seat and being attached to the inner ring of the air suction wheel; the air suction seat is fixedly connected to a support and is sleeved on the outside of the transmission shaft through a bearing, and when the air suction wheel rotates, the air suction nozzle is in sealed butt joint with the air suction hole.

6. The kick-to-disc mechanism of claim 1, wherein: The transmission component further comprises a driving motor, the driving motor being connected with the transmission shaft through a shaft coupling, a gear set, a chain wheel set or a belt pulley set; the transmission shaft is fixedly connected with the air suction wheel, for driving the air suction wheel to rotate reversely at a constant or adjustable speed.

7. The kick-to-disc mechanism of claim 6, wherein: The air suction wheel is single or multiple arranged in parallel; when the air suction wheel is multiple, the multiple air suction wheels are synchronously rotated reversely through the same transmission shaft or a synchronous transmission mechanism.

8. The kick-to-disc mechanism of claim 1, wherein: The air source comprises an air pump or a fan, the air source being connected with the solenoid valve, the air suction seat and the air suction nozzle in sequence through an air pipe, for providing negative pressure air flow to the air suction hole of the air suction wheel; the solenoid valve receives an electric signal from an online quality detection system, for real-time control of the switching on and off of the negative pressure air flow.

9. The kick-to-disc mechanism of claim 8, wherein: The air suction nozzle on the air suction seat is located above the air suction seat, and when the air suction wheel rotates, the side air suction hole is rotated to the upper part and the air suction nozzle in sequence, so as to ensure that the upper air suction hole is communicated with the negative pressure control component.

10. The kick-out mechanism of any of claims 1 to 9, wherein: The height difference between the first conveying belt and the second conveying belt is H, the top height of the air suction wheel is substantially equal to the upper plane of the second conveying belt and is lower than the upper plane of the first conveying belt; the value range of H is 3cm≤H≤15cm, so as to ensure that the book sticker tail accurately reaches the adsorption area of the air suction wheel during falling, and facilitate the air suction wheel to adsorb and separate the waste book sticker.

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