Waste kicking device of web press

Abstract

The utility model discloses a waste kicking device of a web press to solve the technical problems that an existing waste kicking mode is not accurate enough, and arrangement of paper is easily affected. The conveying device comprises a first conveying belt located at the rear portion and a second conveying belt located at the front portion, the tail end of the first conveying belt is higher than the head end of the second conveying belt, or the tail end of the first conveying belt and the head end of the second conveying belt are equal in height or coincide, and an included angle is formed between the first conveying belt and the second conveying belt. The time and space for waste kicking can occur when the book paste is transited between the first conveying belt and the second conveying belt, a waste kicking mechanism is arranged at the tail end of the first conveying belt, and the waste kicking mechanism can be a pneumatic suction nozzle, a mechanical arm or a belt clamp. The device has the beneficial technical effects that waste book stickers in the book stickers arranged in a fish scale mode can be removed, stable operation of the front book stickers and the rear book stickers is not affected, the waste book stickers are grabbed and positioned accurately, and continuous waste products or a plurality of waste products with very small intervals can also be kicked smoothly.

Description

Technical Field

[0001] The invention relates to the technical field of web printing presses, and in particular to a waste kicking device for a web printing press. Background Art

[0002] Web-fed book and magazine printing presses are often called web printing presses, which include paper feeding, printing, folding and other components. The output product is a folded book label. The folding roller or flower roller of the folding part of the web printing press drops the book labels one by one onto the conveyor belt, and the labels are output to the outside in the form of fish scales and connected to the baler. With the development of visual technology and the improvement of people's requirements for the quality of printed products, online visual quality inspection devices are installed more and more widely on web printing machines. However, they are faced with the problem of how to accurately remove the detected waste or unqualified products. The current common method is to spray labels on unqualified products and take them out manually, or to use air blowing or flipping to kick out the waste together with multiple book labels before and after them. However, these two methods are not ideal. When false detection occurs, spraying labels will cause additional waste, and manually taking out waste is a cumbersome task. After removing the waste together with multiple book labels, manual inspection is required and the good products need to be put back into the good product pile, which also increases the extra workload. In addition, removing multiple book labels will cause the originally neatly arranged fish-scale book labels to be skewed, blocked or even damaged.

[0003] The Chinese patent document with publication number CN 212722667 U discloses an online detection and waste rejection device for a printing press, wherein the waste rejection conveying assembly includes a waste rejection conveying bracket, a waste rejection conveying belt driving device, an active roller, a driven roller and a plurality of waste rejection conveying belts, the waste rejection conveying bracket is mounted on the frame and is located behind the paper blocking mechanism, the waste rejection conveying belt driving device is mounted on the waste rejection conveying bracket, the active roller and the driven roller are respectively arranged at the front and rear ends of the waste rejection conveying bracket, the waste rejection conveying belt is sleeved outside the active roller and the driven roller, and the active roller is connected to the power output end of the waste rejection conveying belt driving device. However, the above-mentioned waste kicking method adopts the method of changing the path of the paper entering the paper collector so that the waste flows into the waste paper storage rack, which is suitable for the situation of paper separation and transportation. For the fish scale-like stacked paper, it is easy to kick out the adjacent qualified products together, and the process of resetting the baffle will affect the arrangement of the paper. Summary of the invention

[0004] The present invention provides a waste kicking device for a web printing press to solve the technical problem that the existing waste kicking method is not accurate enough and easily affects the arrangement of papers.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A waste kicking device for a web printing press is designed, comprising a first conveyor belt located at the rear and a second conveyor belt located at the front, wherein the end of the first conveyor belt is higher than the beginning of the second conveyor belt, or the end of the first conveyor belt and the beginning of the second conveyor belt are at the same height or overlap with each other and there is an angle between the first conveyor belt and the second conveyor belt, and a waste kicking mechanism is arranged at the end of the first conveyor belt.

[0007] Further, when the end of the first conveyor belt is higher than the beginning of the second conveyor belt, the first conveyor belt and the second conveyor belt are both arranged horizontally, or the first conveyor belt and / or the second conveyor belt are arranged obliquely.

[0008] Furthermore, when the end of the first conveyor belt overlaps with the beginning of the second conveyor belt, the angle between the first conveyor belt and the top of the second conveyor belt is greater than 180 degrees.

[0009] Furthermore, the waste kicking mechanism is a paper head waste kicking mechanism located above the end of the first conveyor belt, and the paper head waste kicking mechanism includes a paper head grabbing mechanism and a first waste bin, and the first waste bin is located at the end of the waste kicking mechanism.

[0010] Furthermore, the paper head grabbing mechanism includes an upper clamping belt and a lower clamping belt, which are arranged relative to each other and move synchronously, and can swing and rotate around the same rotating shaft. The paper head grabbing mechanism can also use a manipulator or a pneumatic suction nozzle.

[0011] Furthermore, an upper sensor for detecting the book paper sticker head is arranged above the end of the first conveyor belt, and the upper sensor cooperates with an encoder of an online detection system of the web printing press to accurately obtain the waste ejection time.

[0012] Furthermore, the waste kicking mechanism is a paper tail kicking mechanism located at the lower rear end of the second conveyor belt, and the paper tail kicking mechanism includes a paper tail grabbing mechanism and a second waste bin, and the second waste bin is located at the end of the waste kicking mechanism.

[0013] Furthermore, the tail gripping mechanism includes a suction wheel for sucking the tail of the waste book labels entering the head end of the second conveyor belt and reversely extracting the waste book labels and sending them into the waste bin. Similarly, the tail gripping mechanism can also use a manipulator or a pneumatic suction nozzle.

[0014] Furthermore, a lower sensor for detecting the tail of the paper sticker is provided below the end of the first conveyor belt, and the lower sensor cooperates with an encoder of an online detection system of the web printing press to accurately obtain the time of discarding waste.

[0015] Furthermore, a rear pressure wheel is arranged above the first conveyor belt, and a front pressure wheel is arranged above the second conveyor belt. When the rear pressure wheel presses the paper head of the rear book label, the front pressure wheel can block or press the paper head of the front book label and the middle book label between the front book label and the rear book label is in a free state.

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

[0017] The present invention arranges a conveyor belt for conveying fish-scale book labels on one plane as a conveyor belt with two planes having a certain fold angle and / or a height difference. When the book labels run from the first conveyor belt to the second conveyor belt, the fold angle and the height difference will not affect the smoothness of the book labels running, but there will be two spaces and times for grabbing waste book labels. The waste paper head or paper tail of the waste is grabbed by the waste kicking mechanism, and the waste can be extracted from the book label queue without affecting the smooth running of the front and rear book labels, so as to realize the removal of the waste book labels. Continuous extraction and alternate extraction of waste book labels can also be smoothly implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model relates to a book label conveying device of an existing web printing press.

[0019] Figure 2 It is a schematic diagram of the positions of the first conveyor belt and the second conveyor belt of the present invention.

[0020] Figure 3 This is one of the schematic diagrams of the paper waste kicking mechanism of the present invention.

[0021] Figure 4 This is the second schematic diagram of the paper kicking waste mechanism of the present invention.

[0022] Figure 5 This is the third schematic diagram of the paper kicking waste mechanism of the present invention.

[0023] Figure 6 This is the fourth schematic diagram of the paper kicking waste mechanism of the present invention.

[0024] Figure 7 This is one of the schematic diagrams of the paper tail kicking mechanism of the present invention.

[0025] Figure 8 This is the second schematic diagram of the paper tail kicking mechanism of the present invention.

[0026] Fig. 9 This is the third schematic diagram of the paper tail kicking waste mechanism of the present invention.

[0027] In the figure, 100 and 100' are the first conveyor belts, 200 and 200' are the second conveyor belts, 300 and 300' are the book label queues running in a fish scale shape, 301 and 301' are the book labels in front of the waste book labels, 302 and 302' are the waste book labels, 303 and 303' are the book labels behind the waste book labels, 400 and 400' are book label detection sensors, 501 and 501' are the front pressure wheels; 502 and 502' are the rear pressure wheels, 600 and 600' are the waste kicking mechanisms, 601 is the upper clamping and feeding belt, 602 is the lower clamping and feeding belt, 603 is the waste bin, 601' is the suction wheel, 602' is the horizontal conveying belt, and 603' is the waste bin. DETAILED DESCRIPTION

[0028] The specific implementation modes of the present invention are described below in conjunction with 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] Embodiment 1: A waste kicking device of a web printing press comprises a first conveyor belt 100 at the rear and a second conveyor belt 200 at the front, and a waste kicking mechanism 600 is arranged at the end of the first conveyor belt 100. The end of the first conveyor belt is higher than the beginning of the second conveyor belt, or the end of the first conveyor belt 100 and the beginning of the second conveyor belt 200 are at the same height or overlap, and there is an angle between the first conveyor belt 100 and the second conveyor belt 200. Figure 2 , the figure shows the typical positions of two plane conveyor belts, in a, the first conveyor belt 100 and the second conveyor belt 200 have a folding angle W greater than 180 degrees; in b, the first conveyor belt 100 and the second conveyor belt 200 have a folding angle W less than 180 degrees; in c, the first conveyor belt 100 and the second conveyor belt 200 are parallel but have a height difference of height H, and the tail of the first conveyor belt 100 is higher than the head of the second conveyor belt 200; in d, the first conveyor belt 100 and the second conveyor belt 200 have a folding angle W greater than 180 degrees and the tail of the first conveyor belt 100 is higher than the head of the second conveyor belt 200; in e, the first conveyor belt 100 and the second conveyor belt 200 have a folding angle W less than 180 degrees and the tail of the first conveyor belt 100 is higher than the head of the second conveyor belt 200. It should be noted that the actual device mechanism is not limited to the above typical arrangement, and the first conveyor belt 100 and the second conveyor belt 200 are not necessarily arranged horizontally.

[0030] from Figure 1It can be seen from the existing book label conveying device that the book label queue 300 running in a fish scale shape is conveyed on a horizontal conveyor belt, and it is very difficult to accurately grab one of the book labels without affecting the stable operation of other book labels. Therefore, in this embodiment, the conveyor belt for conveying fish scale book labels on a plane is set as a conveyor belt with two planes having a certain angle or a height difference. When the book labels transition from the first conveyor belt to the second conveyor belt, there will be two spaces and times for grabbing waste book labels, namely, when the paper head exceeds the first conveyor belt and the paper tail has not yet completely entered the second conveyor belt, and the angle and height difference between the conveyor belts will not affect the stability of the book label operation.

[0031] When the angle W between the two planes is greater than 180 degrees or there is a height difference between the two conveying planes and the head of the second conveyor belt is lower than the tail of the first conveyor belt, that is, Figure 2 In a, c, and d, when the book label just emerges from the tail of the first conveyor belt, the head of the book label is tilted due to its certain stiffness, while the head of the book label in front of it has drooped to the second conveyor belt due to its extended position, while the book label behind it is still on the first conveyor belt. At this time, the head of the book label can be grabbed and quickly pulled out of the book label queue without affecting the running stability of the book label queue, thus achieving the function of rejecting waste products.

[0032] When the angle between the two planes is less than 180 degrees or there is a height difference between the two conveying planes and the head of the second conveyor belt is lower than the tail of the first conveyor belt, that is, Figure 2 In b, c, and e, at the moment when the tail of the book label just transfers from the first conveyor belt to the second conveyor belt, the book label behind it is still on the first conveyor belt, and the book label in front of it is completely on the second conveyor belt. At this time, grabbing the tail of the book label at the lower end and quickly pulling it out of the book label queue does not affect the running stability of the book label queue, and the function of rejecting waste can also be achieved.

[0033] Embodiment 2: Based on Embodiment 1, this embodiment adopts a paper head kicking mechanism, see Figures 3 to 6 , the tail of the first conveyor belt 100 is higher than the head of the second conveyor belt 200, Figure 3 The first conveyor belt 100 is arranged horizontally, Figure 4-6 The first conveyor belt 100 is tilted upward so that the waste book labels 302 are straighter when they emerge from the tail of the conveyor belt 100, and the surrounding space is larger, which is more conducive to the design of the kicking mechanism and the removal of waste book labels.

[0034] A rear pressure wheel 502 is arranged above the first conveyor belt 100, and a front pressure wheel 501 is arranged above the second conveyor belt 200. When the rear pressure wheel 502 presses the tail of the rear book sticker, the front pressure wheel 501 can block or press the head of the front book sticker, and the middle book sticker between the front and rear book stickers is in a free state. The first conveyor belt 100 is located behind the book sticker conveyor, and the second conveyor belt 200 is located in front of the book sticker conveyor. 300 is a book sticker queue arranged in a fish scale shape and conveyed forward, of which 301, 302, and 303 are three adjacent book stickers. Assuming that 302 is a waste book sticker that needs to be discarded, when it runs to the tail of the first conveyor belt 100 and emerges, due to the stiffness of the book sticker and its tail being pressed by the rear book sticker 303, the book sticker 302 is straightened forward, while the front book sticker 301 has been stretched out more. The waste book label 302 is about to fall or has fallen onto the second conveyor belt 200 below the front and is blocked or pressed by the front pressure wheel 501. The rear book label 303 is pressed by the rear pressure wheel 502 on the first conveyor belt 100. At this time, the waste book label 302 is temporarily free in the entire book label queue and the head is exposed alone. The waste kicking mechanism 600 is arranged above the front part to facilitate the rapid extraction of the waste book label 302 without affecting the smooth operation of other book labels, and can be continuously grabbed and intermittently grabbed, so as to perfectly achieve the purpose of kicking out the waste book label.

[0035] The waste kicking mechanism 600 may be, but is not limited to, a pneumatic suction nozzle, a manipulator, a belt clamping mechanism, or a combination of mechanisms. In this embodiment, a belt clamping mechanism is used. Figure 5 and Figure 6 The upper clamping belt 601 and the lower clamping belt 602 are arranged relatively to each other and move synchronously and rapidly. A waste bin 603 is arranged behind the clamping belts. When the book label enters the middle clamping channel, it can be quickly transported backward to the waste bin. The upper clamping belt 601 and the lower clamping belt 602 can swing and rotate around the axis A at the same time. When the book label is operating normally, the book label falls from the first conveyor belt 100 to the second conveyor belt 200 in turn and is transported forward. The upper clamping belt 601 and the lower clamping belt 602 are above the book label and do not contact and affect the operation of the book label. A sensor 400 is arranged above the tail of the first conveyor belt 100 to detect the waste book label 302. Combined with the kicking time window given by the detection system, the waste book label can be accurately kicked out.

[0036] When the online detection system of the web printing press detects a signal from a waste book label and the encoder calculates that the waste book label has entered the waste kicking area, the sensor 400 detects the head of the waste book label 302, and the upper pinching belt 601 and the lower pinching belt 602 swing downward around the axis A to Figure 6 The waste book label enters the clamping channel between 601 and 602 and is quickly transported to the waste bin 603. Then 601 and 602 are quickly lifted and reset. When the book label 303 emerges, 601 and 602 are already in Figure 5The position above the book signature does not affect the book signature 303 from falling onto the second conveyor belt 200 .

[0037] Embodiment 3: Based on Embodiment 1, this embodiment adopts a paper tail kicking mechanism, see Figures 7 to 9 , including a suction wheel 601' located behind the head end of the second conveyor belt 200', and a book label detection sensor 400' located below the end of the first conveyor belt 100'. When the detection system of the printing press detects that the waste book label sends a signal and the encoder calculates that the waste book label enters the waste kicking area, when the sensor 400' detects that the waste book label 302', the suction wheel 601' sucks air inward and rotates, and the paper tail of the waste book label 302' is adsorbed on the suction wheel 601' and transmitted to the transverse conveying belt 602', and then the transverse conveying belt 602' puts the waste book label 302' into the waste bin 603'.

[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 appreciate that, without departing from the spirit of the present invention, the specific parameters in the above embodiments may be changed to form a plurality of specific embodiments, which are all within the common variation range of the present invention and will not be described in detail herein.

Claims

1. A waste kicking device for a web printing press, characterized in that: It includes a first conveyor belt located at the rear and a second conveyor belt located at the front, a waste kicking mechanism is arranged at the end of the first conveyor belt, the end of the first conveyor belt is higher than the beginning of the second conveyor belt, or the end of the first conveyor belt and the beginning of the second conveyor belt are at the same height or overlap and there is an angle between the first conveyor belt and the second conveyor belt.

2. The waste kicking device of a web printing press according to claim 1, characterized in that: When the end of the first conveyor belt is higher than the beginning of the second conveyor belt, the first conveyor belt and the second conveyor belt are both arranged horizontally, or the first conveyor belt and / or the second conveyor belt are arranged obliquely.

3. The waste kicking device of a web printing press according to claim 1, characterized in that: When the end of the first conveyor belt and the beginning of the second conveyor belt overlap, the angle between the tops of the first conveyor belt and the second conveyor belt is greater than 180 degrees.

4. The waste kicking device of a web printing press according to claim 1, characterized in that: The waste kicking mechanism is a paper head waste kicking mechanism located above the end of the first conveyor belt, and the paper head waste kicking mechanism includes a paper head grabbing mechanism and a first waste bin, and the first waste bin is located at the end of the waste kicking mechanism.

5. The waste kicking device of a web printing press according to claim 4, characterized in that: The paper head grabbing mechanism comprises an upper clamping belt and a lower clamping belt, the upper clamping belt and the lower clamping belt are arranged relatively and move synchronously, and the upper clamping belt and the lower clamping belt can swing and rotate around the same rotating shaft.

6. The waste kicking device of a web printing press according to claim 4, characterized in that: An upper sensor for detecting the book paper sticker head is arranged above the end of the first conveyor belt, and the upper sensor cooperates with the encoder of the online detection system of the web printing press to accurately obtain the waste ejection time.

7. The waste kicking device of a web printing press according to claim 1, characterized in that: The waste kicking mechanism is a paper tail kicking mechanism located at the lower rear end of the second conveyor belt, and the paper tail kicking mechanism includes a paper tail grabbing mechanism and a second waste bin, and the second waste bin is located at the end of the waste kicking mechanism.

8. The waste kicking device of a web printing press according to claim 7, characterized in that: The paper tail grasping mechanism comprises a suction wheel, which is used to absorb the paper tail of the waste book signature entering the head end of the second conveyor belt and reversely extract the waste book signature and send it into the second waste bin.

9. The waste kicking device of a web printing press according to claim 7, characterized in that: A lower sensor for detecting the tail of the paper sticker is arranged below the end of the first conveyor belt. The lower sensor cooperates with an encoder of an online detection system of the web printing press to accurately obtain the time of discarding the paper sticker.

10. The waste kicking device of a web printing press according to claim 1, characterized in that: A rear pressing wheel is arranged above the first conveyor belt, and a front pressing wheel is arranged above the second conveyor belt. When the rear pressing wheel presses the tail of the rear book label, the front pressing wheel can block or press the head of the front book label and the middle book label between the front book label and the rear book label is in a free state.

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