CN115555294A - Paper removing device and method for web offset printing press - Google Patents

Paper removing device and method for web offset printing press Download PDF

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Publication number
CN115555294A
CN115555294A CN202211379252.0A CN202211379252A CN115555294A CN 115555294 A CN115555294 A CN 115555294A CN 202211379252 A CN202211379252 A CN 202211379252A CN 115555294 A CN115555294 A CN 115555294A
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CN
China
Prior art keywords
paper
platform
rejecting
conveying
printing press
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Pending
Application number
CN202211379252.0A
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Chinese (zh)
Inventor
张殿斌
蒋卫
王忠厚
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Beijing Sino Mv Technologies Co ltd
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Beijing Sino Mv Technologies Co ltd
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Priority to CN202211379252.0A priority Critical patent/CN115555294A/en
Publication of CN115555294A publication Critical patent/CN115555294A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties
    • B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
    • B07C5/3422—Sorting according to other particular properties according to optical properties, e.g. colour using video scanning devices, e.g. TV-cameras
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/36—Sorting apparatus characterised by the means used for distribution
    • B07C5/361—Processing or control devices therefor, e.g. escort memory
    • B07C5/362—Separating or distributor mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H1/00—Supports or magazines for piles from which articles are to be separated
    • B65H1/02—Supports or magazines for piles from which articles are to be separated adapted to support articles on edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/24—Delivering or advancing articles from machines; Advancing articles to or into piles by air blast or suction apparatus
    • B65H29/245—Air blast devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/58—Article switches or diverters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/02—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains
    • B65H5/021—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains by belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/11—Dimensional aspect of article or web
    • B65H2701/113—Size
    • B65H2701/1131—Size of sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Multimedia (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)

Abstract

The disclosure relates to a paper removing device and method for a web offset printing press. The device comprises a paper input platform, a paper shooting mechanism, a paging head and a paper identification and removal platform; the paper input platform is used for being butted with a paper receiving and conveying platform of the web offset printing press and conveying the paper of the paper receiving and conveying platform to the paper shooting mechanism; the paper shooting mechanism is used for stacking and stacking the paper and transmitting the paper to a paper placing position of the page separation head; the page separation head is used for separating the stacked and orderly paper one by one and distributing the paper to the paper identification and rejection platform; the conveying speed of the paper identifying and rejecting platform is matched with the paper discharging speed of the paging head so that paper can be conveyed on the paper identifying and rejecting platform at intervals, and the paper identifying and rejecting platform is used for identifying and rejecting unqualified paper. The embodiment of the disclosure realizes automatic accurate rejection of unqualified paper, and saves labor and material cost.

Description

Paper removing device and method for web offset printing press
Technical Field
The disclosure relates to the technical field of printing presses, in particular to a paper removing device and method for a web offset printing press.
Background
Web offset printing presses (also known as rotary presses) are not typically equipped with a print quality detection system, which is typically added by the press user looking for a specialized image detection company. Generally, the added printing quality detection system has no automatic rejection device for unqualified paper, and when the printing quality detection system detects the unqualified paper, the unqualified paper can be rejected by a manual intervention method. However, because the printing speed of the printing machine is very fast, when continuous unqualified paper exists in the printing process, the accuracy of manual removal quantity is poor, a large number of paper sheets are generally removed, and double resource waste of manual work and products is caused; when a single piece of unqualified paper exists in the printing process, the single piece of unqualified paper is difficult to remove manually. Therefore, manual intervention is needed for removing unqualified paper at present, so that the unqualified paper cannot be removed accurately, and a large amount of labor and material cost is wasted.
Disclosure of Invention
To solve the technical problems or at least partially solve the technical problems, the present disclosure provides a paper removing device and method for an offset web printing press.
The utility model provides a paper removing device of a web offset printing press, which comprises a paper input platform, a paper shooting mechanism, a paging head and a paper identifying and removing platform;
the paper input platform is used for being butted with a paper collection and delivery platform of a web offset printing press and delivering the paper of the paper collection and delivery platform to the paper shooting mechanism; the paper shooting mechanism is used for stacking and stacking the paper and transmitting the paper to a paper placing position of the page separation head; the paging head is used for sending the paper stacked and orderly to the paper identification and rejection platform one by one; the conveying speed of the paper identifying and rejecting platform is matched with the paper discharging speed of the paging head so that paper can be conveyed on the paper identifying and rejecting platform at intervals, and the paper identifying and rejecting platform is used for identifying and rejecting unqualified paper.
In some embodiments, a paper output platform is also included;
the paper identifying and rejecting platform is also used for conveying qualified paper to the paper output platform; and the paper output platform is used for restoring the qualified paper into the state of the paper input by the paper input platform and transmitting the paper to a paper receiving part of the offset web printing press.
In some embodiments, the paper recognition rejection platform comprises a transport platform, a camera, and a rejection mechanism, the camera and the rejection mechanism being fixed to the transport platform; the conveying platform is used for conveying the paper; the camera is used for acquiring images of the paper conveyed on the conveying platform, identifying the paper with the unqualified mark based on the images of the paper, and determining the paper with the unqualified mark as unqualified paper; the rejecting mechanism is used for rejecting the unqualified paper.
In some embodiments, the paper output platform and the paper identification and rejection platform are arranged at intervals, and the conveying surface of the paper output platform is lower than the conveying surface of the paper identification and rejection platform;
the paper identification rejection platform is characterized in that the rejection mechanism comprises a high-pressure air nozzle, the high-pressure air nozzle is located in a gap between the paper output platform and the paper identification rejection platform, and the high-pressure air nozzle is higher than a conveying surface of the paper identification rejection platform and used for downwards spraying high-pressure air.
In some embodiments, the paper output platform and the paper identification and rejection platform are arranged at intervals, and the conveying surface of the paper output platform is lower than the conveying surface of the paper identification and rejection platform;
the rejecting mechanism comprises a turning plate, the turning plate is located between the paper output platform and the paper identifying and rejecting platform, the turning plate can turn around a fixed rotating shaft, and in the turning process of the turning plate, one end, close to the paper identifying and rejecting platform, of the turning plate can be higher than and lower than a conveying surface of the paper identifying and rejecting platform.
In some embodiments, the paper sheet reject device further comprises a reject collecting mechanism for collecting the rejected paper sheets rejected by the rejecting mechanism.
In some embodiments, the waste collection mechanism includes a waste collection bin, an opening of the waste collection bin faces a gap between the paper output platform and the paper identification and rejection platform, and the opening of the waste collection bin is lower than a conveying surface of the paper output platform.
In some embodiments, the reject collection mechanism includes a reject collection conveyor, and a gap between the sheet output platform and the sheet reject identification platform is located above the reject collection conveyor.
In some embodiments, the paper input platform has a same conveying speed as the delivery conveying platform, and the paper input platform has the same width dimension as the delivery conveying platform.
In some embodiments, the conveying speed of the paper input platform and the conveying speed of the paper output platform are the same as the conveying speed of the delivery conveying platform.
In some embodiments, the paper input platform, the paper capture mechanism, and the paging head are integrated.
The present disclosure also provides a method for removing paper from a web offset printing press, which is performed by the paper removing device for a web offset printing press provided by the present disclosure, and includes:
the paper input platform conveys the paper of the paper receiving and conveying platform to the paper shooting mechanism;
the paper shooting mechanism is used for stacking and stacking the paper and transmitting the paper to a paper placing position of the page separation head;
the page separation head distributes the stacked and stacked paper to the paper identification and rejection platform one by one;
and identifying and rejecting unqualified paper by a paper identification rejecting platform, wherein the conveying speed of the paper identification rejecting platform is matched with the paper outlet speed of the paging head so that the paper is conveyed on the paper identification rejecting platform at intervals.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
according to the technical scheme, the paper input platform is stacked and stacked orderly from the paper receiving and conveying platform of the web offset printing press by the paper shooting mechanism, the stacked and orderly paper is sent to the paper identification and rejection platform one by the aid of the paging heads, the paper is conveyed on the paper identification and rejection platform at intervals by the aid of the paper identification and rejection platform, and the unqualified paper is identified and rejected by the paper identification and rejection platform. Therefore, the technical scheme of the disclosure realizes the paper removing device of the web offset printing press capable of automatically removing the unqualified paper, replaces manpower, can accurately remove continuous unqualified paper and single unqualified paper, and saves labor and material cost. Moreover, the web offset printing press paper removing device provided by the disclosure has strong universality, is suitable for all printing quality detection systems of web offset printing presses, and realizes closed-loop management of the printing quality detection systems.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the embodiments or technical solutions in the prior art description will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a paper removing device of a web offset printing press according to an embodiment of the disclosure;
FIG. 2 is a schematic structural diagram of another paper removing device of an offset web printing press according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of another paper removing device of an offset web printing press according to an embodiment of the present disclosure;
fig. 4 is a flowchart of a paper rejecting method for an offset web printing press according to an embodiment of the disclosure.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
Fig. 1 is a schematic structural diagram of a paper removing device of an offset web printing press according to an embodiment of the disclosure. The paper removing device of the web offset printing press is suitable for identifying and removing the paper marked with the unqualified mark, and can be adapted to the printing quality detection systems of all web offset printing presses. Specifically, as shown in fig. 1, the paper removing device of the web offset printing press comprises a paper input platform 1, a paper shooting mechanism 2, a paging head 3 and a paper identification removing platform 4;
the paper input platform 1 is used for butting with a paper receiving and conveying platform of the web offset printing press and conveying the paper 10 of the paper receiving and conveying platform to the paper shooting mechanism 2; the paper shooting mechanism 2 is used for stacking and stacking paper 10 and transmitting the paper to a paper placing position of the paging head 3; the page separation head 3 is used for distributing the stacked and orderly paper 10 to the paper identification and rejection platform 4 one by one; the conveying speed of the paper identification and rejection platform 4 is matched with the paper outlet speed of the paging head 3, so that the paper 10 is conveyed on the paper identification and rejection platform 4 at intervals, and the paper identification and rejection platform 4 is used for identifying and rejecting unqualified paper.
In the embodiment of the disclosure, on the delivery conveyor deck of the web offset printing press, the sheets 10 are stacked while being conveyed, so as to form the scaly sheets 10. After the paper input platform 1 is butted with the paper receiving and conveying platform, the paper input platform 1 can keep the paper 10 in the state of being conveyed on the paper receiving and conveying platform, namely, the fish scale type input. In some embodiments, the conveying speed of the paper input platform 1 is the same as that of the delivery platform, and the width dimension of the paper input platform 1 and the delivery platform are the same, so that the seamless docking of the paper input platform 1 and the delivery platform is realized to ensure that the state of the paper 10 input to the shooting mechanism 2 is the same as that of the paper 10 delivered on the delivery platform of the offset web printing press. Alternatively, the sheet-taking mechanism 2 is a cylinder-side sheet-taking mechanism, so that sheets can be taken in a lateral direction, so that the stacked sheets 10 are aligned in a vertical direction, in preparation for the separation of the sheet-separating head 3. The header 3 can separate the paper 10 stacked orderly one by one, so that the subsequent paper identification and removal platform 4 can identify the single paper 10, and removal of the single unqualified paper is realized. In addition, considering that the paper identification and rejection platform 4 needs to reject the unqualified paper by identifying the unqualified mark on the paper 10, if the paper 10 is stacked on the paper identification and rejection platform 4, the unqualified mark may be blocked, so that a part of unqualified paper cannot be identified, and a part of unqualified paper is output. Therefore, the sheets 10 should be transported at intervals on the sheet recognition and rejection platform 4 to avoid the defective marks on the sheets 10 being blocked by other sheets 10. Therefore, in the embodiment, the conveying speed of the paper identification and rejection platform 4 is designed to be matched with the paper output speed of the paging head 3, that is, the conveying speed of the paper identification and rejection platform 4 is greater than the paper output speed of the paging head 3, and specifically, the conveying speed of the paper identification and rejection platform 4 and/or the paper output speed of the paging head 3 can be set according to actual operation, so as to realize that the paper 10 is conveyed on the paper identification and rejection platform 4 at intervals.
In some embodiments, the offset web press sheet reject device further comprises a sheet output platform; the paper identifying and rejecting platform is also used for conveying the qualified paper to the paper output platform; the paper output platform is used for restoring the qualified paper into the state of the paper input by the paper input platform and transmitting the paper to the paper receiving part of the web offset printing machine.
Illustratively, referring to fig. 2, a sheet output platform 5 is further provided after the sheet recognition and rejection platform 4 in the conveying direction of the sheet 10, and the sheet recognition and rejection platform 4 conveys the qualified sheets to the sheet output platform 5. In order to ensure the state of the sheets 10 collected by the delivery unit of the web offset printing press, the state of the sheets 10 collected when the delivery unit of the web offset printing press is directly butted against the delivery platform of the web offset printing press is kept consistent, and influence on the subsequent process is avoided, the sheet output platform 5 returns the qualified sheets to the state of the sheets 10 input by the sheet input platform, so that the effect that the delivery unit of the web offset printing press is directly butted against the delivery platform of the web offset printing press is achieved. Illustratively, the paper output platform 5 is a fish scale type paper output platform, that is, the paper output platform 5 can convey the qualified paper in a fish scale manner, and particularly, the conveying speed of the paper output platform 5 can be controlled so that the qualified paper is stacked into fish scales after being conveyed onto the paper output platform 5. The sheet output platform 5 is a conventional component and is not specifically described in this disclosure. In some embodiments, the transport speed of the sheet input deck 1 and the transport speed of the sheet output deck 5 are the same as the transport speed of the delivery deck, thereby achieving a consistent state of the sheets 10 collected by the delivery of the web offset printing press with the sheets 10 collected when the delivery of the web offset printing press is directly docked with the delivery transport deck of the web offset printing press.
In some embodiments, the paper identification rejection platform comprises a conveying platform, a camera and a rejection mechanism, the camera and the rejection mechanism being fixed on the conveying platform; the conveying platform is used for conveying paper; the camera is used for collecting images of the paper conveyed on the conveying platform, identifying the paper with the unqualified mark based on the images of the paper, and determining the paper with the unqualified mark as unqualified paper; the rejecting mechanism is used for rejecting unqualified paper.
Specifically, referring to fig. 1 or 2, the sheet recognition and rejection platform 4 includes a conveyance platform 41, a camera 42, and a rejection mechanism 43. The conveying platform 41 includes a conveyor belt on which the paper sheet 10 is conveyed. The camera 42 is fixed above the conveyor belt and can shoot vertically downwards. When the paper 10 is conveyed below the camera 42 by the conveyor belt, the camera 12 can acquire an image of the paper 10, and can recognize whether the paper 10 has an unqualified mark through image recognition, so as to determine whether the paper 10 is a unqualified paper. The rejecting mechanism 43 is provided after the camera 42 in the conveying direction of the sheet 10 to reject the defective sheet after the camera 42 recognizes the defective sheet. It should be noted that the present disclosure does not limit the specific implementation of the rejecting mechanism 43, as long as the rejected unqualified paper sheets can be rejected, and in addition, the camera 42 may be an intelligent camera.
In some embodiments, the paper output platform and the paper identification and rejection platform are arranged at intervals, and the conveying surface of the paper output platform is lower than the conveying surface of the paper identification and rejection platform; the rejecting mechanism comprises a high-pressure air nozzle which is positioned in a gap between the paper output platform and the paper identifying and rejecting platform, and a nozzle of the high-pressure air nozzle is higher than a conveying surface of the paper identifying and rejecting platform and is used for downwards spraying high-pressure air.
Specifically, referring to fig. 2, the paper output platform 5 is spaced from the paper identification and rejection platform 4, and the conveying surface of the paper output platform 5 is lower than the conveying surface of the paper identification and rejection platform 4, so that the qualified paper conveyed to the edge by the paper identification and rejection platform 4 can be conveyed to the paper output platform 5 by inertia. Meanwhile, a gap is reserved between the paper output platform 5 and the paper identification and removal platform 4, when unqualified paper is conveyed to the edge of the paper identification and removal platform 4, high-pressure air is sprayed downwards by a high-pressure air nozzle serving as a removal mechanism 43, and the unqualified paper can be removed from the gap between the paper output platform 5 and the paper identification and removal platform 4.
In addition, the embodiment of the disclosure also provides another implementation manner of the removing mechanism:
in some embodiments, the paper output platform and the paper identification and rejection platform are arranged at intervals, and the conveying surface of the paper output platform is lower than the conveying surface of the paper identification and rejection platform; the rejecting mechanism comprises a turning plate, the turning plate is located between the paper output platform and the paper identifying rejecting platform and can turn around a fixed rotating shaft, and in the turning plate turning process, one end, close to the paper identifying rejecting platform, of the turning plate can be higher than and lower than a conveying surface of the paper identifying rejecting platform.
Specifically, referring to fig. 4, when the unqualified paper identified by the camera 42 is conveyed to the edge of the paper identification and rejection platform 4, the end of the turning plate 44 close to the paper identification and rejection platform 4 is controlled to turn upwards, so that the end of the turning plate 44 close to the paper identification and rejection platform 4 is higher than the conveying surface of the paper identification and rejection platform 4, and the unqualified paper is blocked by the turning plate and automatically drops from the gap between the paper output platform 5 and the paper identification and rejection platform 4, thereby realizing the rejection of the unqualified paper. When the qualified paper is conveyed to the edge of the paper identification and rejection platform, one end of the turning plate 44 close to the paper identification and rejection platform 4 is controlled to turn downwards, so that one end of the turning plate 44 close to the paper identification and rejection platform 4 is lower than the conveying surface of the paper identification and rejection platform 4, and the qualified paper is conveyed to the paper output platform 5 due to inertia.
Based on the above embodiment, in order to realize the turning of the turning plate 44, the removing mechanism further includes a power device, such as an air cylinder, the power device is connected with the fixed rotating shaft, and the power device can control the fixed rotating shaft to rotate, so as to drive the turning plate 44 to turn.
In some embodiments, the paper sheet feeder further comprises a reject collecting mechanism for collecting the rejected paper sheets rejected by the rejecting mechanism.
In some embodiments, the waste collection mechanism includes a waste collection bin, an opening of the waste collection bin faces a gap between the paper output platform and the paper identification and rejection platform, and the opening of the waste collection bin is lower than the conveying surface of the paper output platform.
Specifically, referring to fig. 2, the waste collection bin 6 may be a box body with an opening at the upper end (the opening may be square or circular, etc.), the opening of the waste collection bin 6 is directly opposite to the gap between the paper output platform 5 and the paper identification and removal platform 4, and the opening of the waste collection bin 6 is lower than the conveying surface of the paper output platform 5. Thus, the unqualified paper rejected by the rejecting mechanism 43 directly falls into the waste collecting bin 6 after passing through the gap, so that the unqualified paper is prevented from being cleaned, and the labor cost is saved.
In addition, in some embodiments, the waste collection mechanism includes a waste collection conveyor, and the gap between the paper output platform and the paper identification rejection platform is located above the waste collection conveyor.
In particular, with reference to fig. 3, the waste collection conveyor 7 may comprise a conveyor belt. Considering that there may be the qualified paper that the mistake was rejected, consequently through setting up waste product collecting and conveying device 7, the paper rejected via the rejection mechanism can drop to waste product collecting and conveying device 7, is collected by waste product collecting and conveying device 7 conveying to be favorable to improving the regularity of paper collection, be convenient for choose out qualified paper. In addition, optionally, the paper sorting and removing device can further comprise a guide plate, the guide plate is arranged in an inclined mode from the position below the edge of the paper sorting and removing platform to the waste collecting and conveying device, therefore, removed paper can slide onto the waste collecting and conveying device along the guide plate, and the paper collecting and removing neatness is further improved.
Based on the above embodiments, the working principle of the paper removing device of the offset web printing press according to the embodiments of the present disclosure is as follows:
after the web offset printing press prints the sheet 10, the print quality detection system at the leading end detects the print quality of the sheet 10, and when a defective sheet is detected, a recognizable non-conforming mark is printed on the defective sheet. Then, all the printed sheets 10 are conveyed to a sheet rejecting device of the web offset printing press along with a delivery conveying platform of the web offset printing press; the paper input platform 1 is butted with a paper delivery platform of the web offset printing press, receives the paper 10 delivered by the paper delivery platform of the web offset printing press, and delivers the paper 10 to the paper shooting mechanism 2; the paper shooting mechanism 2 stacks and stacks paper 10 and transmits the paper to a paper placing position of the paging head 3; the page separation head 3 distributes the paper sheets 10 which are stacked and stacked orderly one by one to the paper sheet identification and rejection platform 4; the conveying speed of the paper identifying and rejecting platform 4 is matched with the paper discharging speed of the paging head 3, so that the paper 10 is conveyed on the paper identifying and rejecting platform 4 at intervals, when the paper 10 passes through the camera 42, the camera 42 collects images of the paper 10, whether unqualified marks exist on the paper 10 is identified through the images, when the unqualified marks are identified, the corresponding paper 10 is judged to be unqualified paper, and then the unqualified paper is rejected by the rejecting mechanism 43 when passing through the rejecting mechanism 43; the qualified paper is conveyed to the paper output platform 5 through inertia, and is restored to the state when the qualified paper is input to the paper removing device of the printing machine on the paper output platform 5; each of the accepted sheets is then transported via the sheet output platform 5 to the delivery section of the web offset printing press. It can be understood that the paper rejecting device of the web offset printing press provided by the disclosure can be controlled by an upper computer. When the camera 42 identifies the unqualified paper, the upper computer determines the timing for the rejecting mechanism 43 to reject the unqualified paper according to the distance between the camera 42 and the rejecting mechanism 43 in the paper conveying direction and the conveying speed of the paper identifying and rejecting platform 4, so that the unqualified paper is accurately rejected, and the qualified paper is conveyed to the paper output platform 5.
In some embodiments, the paper input platform, the patting mechanism, and the paging head are integrated. Therefore, the size of the paper removing device of the web offset printing press can be shortened, and the cost is reduced.
The paper removing device for the web offset printing press provided by the embodiment of the disclosure adopts the paper shooting mechanism to stack and stack paper conveyed by the paper input platform from the paper receiving and conveying platform of the web offset printing press, adopts the paging heads to deliver the stacked and stacked paper to the paper identification removing platform one by one, and is matched with the paper identification removing platform to convey the paper on the paper identification removing platform at intervals, and then utilizes the paper identification removing platform to identify and remove unqualified paper. Therefore, the technical scheme of the disclosure realizes the paper removing device of the web offset printing press capable of automatically removing the unqualified paper, replaces manpower, can accurately remove continuous unqualified paper and single unqualified paper, and saves labor and material cost. Moreover, the web offset printing press paper removing device provided by the disclosure has strong universality, is suitable for all printing quality detection systems of web offset printing presses, and realizes closed-loop management of the printing quality detection systems.
In addition, the embodiment of the disclosure also provides a paper removing method of the web offset printing press. Fig. 4 is a flowchart of a paper rejecting method for an offset web printing press according to an embodiment of the disclosure. The method is executed by the paper rejecting device of the offset web printing press provided by the embodiment of the disclosure, as shown in fig. 4, and comprises the following steps:
s101, the paper input platform conveys the paper of the paper receiving and conveying platform to the paper shooting mechanism.
S102, the paper shooting mechanism stacks and stacks paper and conveys the paper to a paper placing position of the page separation head.
S103, the paging head delivers the paper sheets which are stacked and stacked one by one to the paper sheet identification and removal platform.
And S104, identifying and removing the unqualified paper by the paper identifying and removing platform, wherein the conveying speed of the paper identifying and removing platform is matched with the paper discharging speed of the paging head so that the paper is conveyed on the paper identifying and removing platform at intervals.
The method for removing the paper of the offset web printing press provided by the embodiment of the disclosure is executed by the device for removing the paper of the offset web printing press provided by the embodiment of the disclosure, belongs to the same inventive concept, and has the same technical characteristics and beneficial effects. The device embodiment can be referred to for the content that is not described in detail in the method embodiment, and the description of the embodiment is omitted.
It is noted that, in this document, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A paper removing device of a web offset printing press is characterized by comprising a paper input platform, a paper shooting mechanism, a paging head and a paper identification removing platform;
the paper input platform is used for being butted with a paper receiving and conveying platform of the web offset printing press and conveying the paper of the paper receiving and conveying platform to the paper shooting mechanism; the paper shooting mechanism is used for stacking and stacking the paper and transmitting the paper to a paper placing position of the page separation head; the page separation head is used for distributing the paper stacked and piled up one by one to the paper identification and rejection platform; the conveying speed of the paper identifying and rejecting platform is matched with the paper discharging speed of the paging head so that paper can be conveyed on the paper identifying and rejecting platform at intervals, and the paper identifying and rejecting platform is used for identifying and rejecting unqualified paper.
2. The web offset printing press sheet removal unit as recited in claim 1 further comprising a sheet output platform;
the paper identification and rejection platform is also used for conveying qualified paper to the paper output platform; and the paper output platform is used for restoring the qualified paper into the state of the paper input by the paper input platform and transmitting the paper to a paper receiving part of the offset web printing press.
3. The web offset printing press sheet reject device according to claim 2, wherein the sheet recognition reject platform comprises a transport platform, a camera, and a reject mechanism, the camera and the reject mechanism being fixed to the transport platform; the conveying platform is used for conveying the paper; the camera is used for acquiring images of the paper conveyed on the conveying platform, identifying the paper with the unqualified mark based on the images of the paper, and determining the paper with the unqualified mark as unqualified paper; the rejecting mechanism is used for rejecting the unqualified paper.
4. The device for removing sheets from a web offset printing press according to claim 3, wherein the sheet output platform is spaced from the sheet recognition and removal platform, and a transport surface of the sheet output platform is lower than a transport surface of the sheet recognition and removal platform;
the rejecting mechanism comprises a high-pressure air nozzle, the high-pressure air nozzle is located in a gap between the paper output platform and the paper identifying and rejecting platform, and a nozzle of the high-pressure air nozzle is higher than a conveying surface of the paper identifying and rejecting platform and is used for downwards spraying high-pressure air.
5. The device for removing sheets from a web offset printing press according to claim 3, wherein the sheet output platform is spaced from the sheet recognition and removal platform, and a transport surface of the sheet output platform is lower than a transport surface of the sheet recognition and removal platform;
the rejecting mechanism comprises a turning plate, the turning plate is located between the paper output platform and the paper identifying and rejecting platform, the turning plate can turn around a fixed rotating shaft, and in the turning process of the turning plate, one end, close to the paper identifying and rejecting platform, of the turning plate can be higher than and lower than a conveying surface of the paper identifying and rejecting platform.
6. The paper rejecting device for offset web printing presses according to claim 4 or 5, further comprising a reject collecting mechanism for collecting the rejected paper rejected by the rejecting mechanism.
7. The web offset printing press paper rejection device according to claim 6, wherein the reject collection mechanism includes a reject collection bin having an opening facing a gap between the paper output platform and the paper identification rejection platform, and having an opening lower than a conveying surface of the paper output platform.
8. The web offset printing press paper reject device according to claim 6, wherein the reject collection mechanism comprises a reject collection conveyor, and a gap between the paper output platform and the paper recognition reject platform is located above the reject collection conveyor.
9. The web offset printing press sheet removal unit as recited in claim 1 wherein the sheet input platform, the patting mechanism and the sorting head are integrated.
10. A paper rejecting method for an offset web printing press, performed by the paper rejecting device for an offset web printing press according to any one of claims 1 to 9, comprising:
the paper input platform conveys the paper of the paper delivery platform to the paper shooting mechanism;
the paper shooting mechanism is used for stacking and stacking the paper and transmitting the paper to a paper placing position of the page separation head;
the page separation head distributes the stacked and stacked paper to the paper identification and rejection platform one by one;
and identifying and rejecting unqualified paper by a paper identification rejecting platform, wherein the conveying speed of the paper identification rejecting platform is matched with the paper outlet speed of the paging head so that the paper is conveyed on the paper identification rejecting platform at intervals.
CN202211379252.0A 2022-11-04 2022-11-04 Paper removing device and method for web offset printing press Pending CN115555294A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211379252.0A CN115555294A (en) 2022-11-04 2022-11-04 Paper removing device and method for web offset printing press

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211379252.0A CN115555294A (en) 2022-11-04 2022-11-04 Paper removing device and method for web offset printing press

Publications (1)

Publication Number Publication Date
CN115555294A true CN115555294A (en) 2023-01-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211379252.0A Pending CN115555294A (en) 2022-11-04 2022-11-04 Paper removing device and method for web offset printing press

Country Status (1)

Country Link
CN (1) CN115555294A (en)

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