Double-paper removing mechanism of single-paper drum-type ink-jet printer

Abstract

A double-paper discharging mechanism of a single-paper drum type ink-jet printer relates to the technical field of printing equipment and comprises a rack, and a paper feeding roller assembly and a conveying belt are hinged to the rack. The paper feeding roller assembly comprises a paper feeding support, and a paper feeding roller is rotationally installed on the paper feeding support. A linkage plate, a paper blocking mechanism and a locking mechanism are installed on the machine frame, the linkage plate is fixedly connected with the paper feeding shaft, and the linkage plate rotates around the axis of the paper feeding shaft along with the paper feeding support. The paper blocking mechanism comprises a baffle and a paper blocking rotating wheel, the baffle abuts against the paper blocking rotating wheel, and a paper blocking reset piece is arranged between the baffle and the machine frame. The locking mechanism comprises a locking plate and a locking driving assembly, the locking plate is hinged to the rack, the locking plate is arranged close to the linkage plate and can rotate towards the linkage plate, and the locking plate is connected with the locking driving assembly. The double-piece paper conveying device can block double pieces of paper and limit continuous conveying, the printing quality is improved, and the device is simple in structure and convenient to maintain.

Description

TECHNICAL FIELD

[0001] The utility model relates to printing equipment technical field especially relates to a single sheet cylinder type inkjet printing machine double -sheet paper excluding mechanism. BACKGROUND

[0002] Single sheet cylinder type inkjet printing machine can realize single -sided printing or double -sided printing operation according to customer printing demand, and the single sheet inkjet printing process requires high paper positioning accuracy.

[0003] In the prior art, most of the cylinder type inkjet printing machines adopt cylinders to carry and transfer paper, and the paper is transferred between units by the paper clamping teeth on the printing cylinder, the paper transfer cylinder or the transfer chain. The printing cylinder is used to carry the paper to complete the printing operation. When the paper is transferred to the printing cylinder by the clamping teeth, it is adsorbed on the surface of the printing cylinder and rotates with the cylinder. An inkjet head is arranged above the printing cylinder. When the paper rotates to the lower side of the inkjet head with the printing cylinder, the inkjet head performs printing operation on the paper.

[0004] When the inkjet printing machine prints the paper, only single sheet paper can be continuously conveyed. When double or multiple papers pass through at the same time, it will cause printing errors and affect the printing quality. Therefore, when double paper occurs, the paper must be blocked in time, and the position of the double paper must be accurately positioned. Only after the double paper is removed can the printing continue. SUMMARY

[0005] Therefore, the technical problem to be solved by the utility model is to provide a single sheet cylinder type inkjet printing machine double sheet paper removal mechanism, which can block the double sheet paper in time and limit the continuous conveying. Only after the double sheet paper is removed can the printing continue, the printing quality is improved, and the structure is simple and easy to maintain.

[0006] To solve the above technical problems, the technical scheme of the utility model is as follows:

[0007] A single sheet cylinder type inkjet printing machine double sheet paper removal mechanism, comprising a rack, a paper feeding roller assembly and a conveying belt matched with the rack are hinged on the rack, and the paper feeding roller assembly is located above the conveying belt;

[0008] The paper feeding roller assembly comprises a paper feeding bracket hinged on the rack through a paper feeding shaft, a paper feeding roller is rotatably installed on the paper feeding bracket, and the paper feeding roller is arranged close to the conveying belt;

[0009] A linkage plate, a paper blocking mechanism and a locking mechanism are installed on the rack, the linkage plate is fixedly connected with the paper feeding shaft and matched with the locking mechanism, and the linkage plate rotates with the paper feeding bracket around the axis of the paper feeding shaft;

[0010] The paper stopping mechanism is used for stopping the paper from moving continuously along the conveying direction, and comprises a baffle hinged to the frame and a paper stopping rotating wheel mounted on the paper feeding support, the baffle is arranged downstream of the paper feeding roller along the paper conveying direction, the baffle abuts against the paper stopping rotating wheel, a paper stopping reset member is arranged between the baffle and the frame, the baffle is controlled by the paper feeding roller assembly, and a paper stopping end of the baffle is located above the conveying belt.

[0011] The locking mechanism is used for limiting the linkage plate from rotating downward along the vertical direction, and comprises a locking plate and a locking driving assembly, the locking plate is hinged to the frame and controlled by the locking driving assembly, a top end of the locking plate is arranged close to the linkage plate and can rotate towards the linkage plate, and a bottom end of the locking plate is connected with the locking driving assembly.

[0012] Preferably, the paper stopping mechanism comprises a paper stopping mounting plate fixed to the paper feeding support, and the paper stopping rotating wheel is rotatably mounted on the paper stopping mounting plate and located below the baffle.

[0013] Preferably, the paper stopping reset member is arranged on both sides of the baffle at the hinged position along the extension direction of the baffle, and the paper stopping reset member is used for pressing the baffle against the paper stopping rotating wheel.

[0014] Preferably, the paper stopping reset member is a tension spring.

[0015] Preferably, a limiting step is arranged at the top end of the locking plate, and when the paper stopping mechanism stops the paper from moving continuously, an end of the linkage plate abuts against the limiting step.

[0016] Preferably, the locking driving assembly comprises a locking driving plate, a locking pull rod and a locking driving member.

[0017] The locking driving plate is hinged to the frame, and a locking reset member is mounted between a top end of the locking driving plate and a bottom end of the locking plate.

[0018] One end of the locking pull rod is hinged to the bottom end of the locking driving plate, a pull rod reset member is mounted between the locking pull rod and the frame, and the other end of the locking pull rod is hinged to the locking driving member.

[0019] The locking plate, the locking driving plate and the locking pull rod are not in the same vertical plane.

[0020] Preferably, the pull rod reset member and the locking driving member are arranged on both sides of the locking driving plate along the paper conveying direction.

[0021] Preferably, the locking reset member and the pull rod reset member are both tension springs, and the locking driving member is a pneumatic cylinder.

[0022] The beneficial effects of the present application are as follows:

[0023] Since the present application comprises a rack, a paper feeding roller assembly and a conveying belt are hingedly connected to the rack, the paper feeding roller assembly is located above the conveying belt, the paper feeding roller assembly comprises a paper feeding support, a paper feeding roller is rotatably installed on the paper feeding support, and the paper feeding roller is arranged close to the conveying belt; the conveying belt can cooperate with the paper feeding roller to convey paper.

[0024] A linkage plate, a paper blocking mechanism and a locking mechanism are installed on the rack, the linkage plate is fixedly connected with the paper feeding shaft, and the linkage plate rotates around the axis of the paper feeding shaft together with the paper feeding support; the paper blocking mechanism comprises a baffle and a paper blocking rotating wheel, the baffle is arranged downstream of the paper feeding roller in the paper conveying direction, the baffle abuts against the paper blocking rotating wheel, a paper blocking reset member is arranged between the baffle and the rack, the baffle is controlled by the paper feeding roller assembly, and the paper blocking end of the baffle is located above the conveying belt; when double paper or multiple papers pass through the paper feeding roller, the paper feeding roller can be lifted due to the fact that the height of the double paper is greater than the height of single paper, so that the paper feeding support rotates counterclockwise around the axis of the paper feeding shaft, the paper blocking rotating wheel is driven to rotate counterclockwise together, the baffle is abutted against and pushed to rotate counterclockwise, the paper blocking end of the baffle is driven to move downward and abut against the paper or the conveying belt, the paper is limited or blocked from moving continuously, and the paper blocking action is realized.

[0025] The locking mechanism comprises a lock plate and a locking driving assembly, the lock plate is hingedly connected to the rack, the top end of the lock plate is arranged close to the linkage plate and can rotate towards the linkage plate, and the bottom end of the lock plate is connected with the locking driving assembly. When the double paper passes through the paper feeding roller to drive the paper feeding support to rotate counterclockwise around the axis of the paper feeding shaft, the linkage plate rotates counterclockwise together. In this process, the locking driving assembly drives the top end of the lock plate to rotate towards the side close to the linkage plate, so that the lock plate abuts against the linkage plate to limit the downward movement of the linkage plate, the position of the linkage plate is fixed, and the position of the baffle is also fixed through the paper feeding support and the paper blocking rotating wheel, so that the paper can be blocked all the time. Only when the double paper condition is excluded, the top end of the lock plate is driven by the locking driving assembly to rotate away from the linkage plate, the lock plate is separated from the linkage plate, and the paper feeding can continue.

[0026] Therefore, the present application can timely block the double paper condition and limit the continuous conveying, so that the printing quality is improved, and the structure is simple and convenient to maintain. BRIEF DESCRIPTION OF DRAWINGS

[0027] The present application will be further described below in combination with the drawings and examples.

[0028] Figure 1 is a structural schematic view of the double paper exclusion mechanism of the single paper roller type inkjet printing machine in the present application when conveying paper;

[0029] Figure 2 is a state diagram of the single sheet cylinder type ink-jet printing machine double sheet excluding mechanism of the embodiment of the utility model when locking paper;

[0030] In the figure:

[0031] 1, paper feed roller assembly; 11, paper feed shaft; 12, paper feed support; 13, paper feed roller;

[0032] 2, conveying belt;

[0033] 3, linkage plate;

[0034] 4, paper blocking mechanism; 41, baffle; 42, paper blocking reset member; 43, paper blocking rotating wheel; 44, paper blocking mounting plate;

[0035] 5, locking mechanism; 51, lock plate; 511, limiting step; 52, locking drive assembly; 521, locking drive plate; 522, locking pull rod; 523, locking drive member; 524, locking reset member; 525, pull rod reset member. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the utility model more clear and intelligible, the utility model is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.

[0037] As Figure 1 and Figure 2 Commonly shown, the utility model includes rack (not shown in the figure), the rack is the known technology in the prior art, and its structure is not described here. The paper feed roller assembly 1 and the conveying belt 2 matched with it are hinged on the rack, the paper feed roller assembly 1 is located above the conveying belt 2; the paper feed roller assembly 1 includes the paper feed support 12 hinged on the rack by the paper feed shaft 11, the paper feed roller 13 is rotatably installed on the paper feed support 12, and the paper feed roller 13 is arranged close to the conveying belt 2; the conveying belt 2 cooperates with the paper feed roller 13, and is used to convey paper.

[0038] The linkage plate 3, the paper blocking mechanism 4 and the locking mechanism 5 are installed on the rack, the linkage plate 3 is fixedly connected with the paper feed shaft 11 and is matched with the locking mechanism 5, and the linkage plate 3 rotates around the axis of the paper feed shaft 11 together with the paper feed support 12; the paper blocking mechanism 4 is used to block the paper from continuing to move along its conveying direction, and the paper blocking mechanism 4 includes the baffle 41 hinged on the rack and the paper blocking rotating wheel 43 installed on the paper feed support 12; the baffle 41 is arranged downstream of the paper feed roller 13 along the paper conveying direction, the baffle 41 abuts against the paper blocking rotating wheel 43, the baffle 41 and the rack are provided with the paper blocking reset member 42, the baffle 41 is controlled by the paper feed roller assembly 1, and the paper blocking end of the baffle 41 is located above the conveying belt 2.

[0039] When double paper or multiple paper passes through the paper feed roller 13, the paper feed roller 13 is lifted, the paper feed support 12 rotates counterclockwise around the axis of the paper feed shaft 11, the paper blocking wheel 43 rotates counterclockwise, the blocking plate 41 is pushed to rotate counterclockwise, the paper blocking end of the blocking plate 41 moves downward to abut on the paper or the conveying belt 2, and the paper blocking action is realized.

[0040] The locking mechanism 5 is used to limit the downward rotation of the linkage plate 3, and the locking mechanism 5 comprises a locking plate 51 and a locking drive assembly 52. The locking plate 51 is hinged to the frame and controlled by the locking drive assembly 52. The top end of the locking plate 51 is arranged close to the linkage plate 3 and can rotate towards the linkage plate 3. The bottom end of the locking plate 51 is connected with the locking drive assembly 52.

[0041] When double paper or multiple paper passes through the paper feed roller 13, the paper feed roller 13 is lifted, the paper feed support 12 rotates counterclockwise around the axis of the paper feed shaft 11, the paper blocking wheel 43 rotates counterclockwise, the blocking plate 41 is pushed to rotate counterclockwise, the paper blocking end of the blocking plate 41 moves downward to abut on the paper or the conveying belt 2, and the paper blocking action is realized.

[0042] Therefore, the present application can timely block the double paper and limit the continuous conveying. Only when the double paper condition is excluded, the paper feeding can continue, the printing quality is improved, and the structure is simple and convenient to maintain.

[0043] In the present application, the paper blocking mechanism 4 comprises a paper blocking mounting plate 44 fixedly arranged on the paper feed support 12, and the paper blocking wheel 43 is rotatably arranged on the paper blocking mounting plate 44 and located below the blocking plate 41. The paper blocking restoring member 42 is arranged on both sides of the hinge of the blocking plate 41 along the extension direction of the blocking plate 41, and the paper blocking restoring member 42 is used to press the blocking plate 41 against the paper blocking wheel 43. When the paper blocking wheel 43 pushes one end of the blocking plate 41 to move upward, the moving direction of the paper blocking end is opposite to that of the paper blocking wheel 43, the paper blocking end moves downward to block the paper. Preferably, the paper blocking restoring member 42 is a tension spring, and the paper blocking restoring member 42 always abuts the blocking plate 41 against the paper blocking wheel 43.

[0044] The top end of the lock plate 51 is provided with a limiting step 511, and the end of the linkage plate 3 abuts against the limiting step 511 when the paper blocking mechanism 4 blocks the paper from moving continuously. It should be noted that, when the paper blocking mechanism 4 blocks the paper from moving continuously, at least two sheets of paper are conveyed between the paper feeding roller 13 and the conveying belt 2 to lift the height of the paper feeding roller 13, so that the end of the linkage plate 3 is lifted together with the paper feeding support 12 and the paper feeding shaft 11, and only when the end of the linkage plate 3 is lifted to a height higher than that in the normal state, the lock driving assembly 52 can drive the top end of the lock plate 51 to move towards the linkage plate 3, so that the limiting step 511 contacts with the linkage plate 3 to limit the downward movement of the linkage plate 3.

[0045] In the present application, the lock driving assembly 52 comprises a lock driving plate 521, a lock pull rod 522 and a lock driving member 523, wherein the lock driving plate 521 is hinged to the rack, a lock reset member 524 is arranged between the top end of the lock driving plate 521 and the bottom end of the lock plate 51, one end of the lock pull rod 522 is hinged to the bottom end of the lock driving plate 521, a pull rod reset member 525 is arranged between the lock pull rod 522 and the rack, and the other end of the lock pull rod 522 is hinged to the lock driving member 523.

[0046] Preferably, the lock plate 51, the lock driving plate 521 and the lock pull rod 522 are not in the same vertical plane, the lock reset member 524 and the pull rod reset member 525 are both tension springs, and the lock driving member 523 is a pneumatic cylinder. The pull rod reset member 525 and the lock driving member 523 are arranged on the two sides of the lock driving plate 521 along the paper conveying direction.

[0047] When the limiting step 511 of the lock plate 51 is needed to lock the linkage plate 3, the lock plate 51 needs to be rotated counterclockwise, and based on this, the piston rod of the lock driving member 523 needs to be retracted. Specifically, the piston rod of the lock driving member 523 is retracted to drive the lock driving plate 521 to rotate counterclockwise around the hinge to pull the lock plate 51 to rotate counterclockwise.

[0048] When the double paper condition is excluded, the piston rod of the lock driving member 523 is extended to the normal state, and the staff separates the linkage plate 3 and the lock plate 51 by hand, and under the tension of the lock reset member 524 and the pull rod reset member 525, the lock plate 51 and the lock driving plate 521 are restored to the original position.

[0049] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A double-sheet discharging mechanism of a single-sheet drum-type inkjet printer, comprising a frame, a paper feeding roller assembly hinged to the frame, and a conveying belt matched with the paper feeding roller assembly, the paper feeding roller assembly being located above the conveying belt; the paper feeding roller assembly comprising a paper feeding support hinged to the frame through a paper feeding shaft, and a paper feeding roller rotatably mounted on the paper feeding support and arranged close to the conveying belt; characterized in that, a linkage plate is fixedly connected with the paper feeding shaft and matched with a locking mechanism, the linkage plate rotates with the paper feeding support around the axis of the paper feeding shaft; a paper blocking mechanism is arranged on the frame and used for blocking the paper from moving continuously in the conveying direction, the paper blocking mechanism comprising a blocking plate hinged to the frame and arranged downstream of the paper feeding roller in the conveying direction of the paper, and a paper blocking rotary wheel mounted on the paper feeding support and abutting against the blocking plate, a paper blocking reset member being arranged between the blocking plate and the frame, the blocking plate being controlled by the paper feeding roller assembly, and a paper blocking end of the blocking plate being located above the conveying belt; and the locking mechanism is used for limiting the linkage plate from rotating downward vertically, the locking mechanism comprising a locking plate hinged to the frame and controlled by a locking driving assembly, a top end of the locking plate being arranged close to the linkage plate and capable of rotating towards the linkage plate, and a bottom end of the locking plate being connected with the locking driving assembly. The paper blocking mechanism comprises a paper blocking mounting plate fixedly arranged on the paper feeding support, and the paper blocking rotary wheel is rotatably mounted on the paper blocking mounting plate and located below the blocking plate. The paper blocking reset member is arranged on both sides of the hinged part of the blocking plate along the extending direction of the blocking plate and used for pressing the blocking plate against the paper blocking rotary wheel. The paper blocking reset member is a tension spring. A limiting step is arranged at the top end of the locking plate; and when the paper blocking mechanism blocks the paper from moving continuously, an end of the linkage plate abuts against the limiting step.

2. The sheet-fed rotary inkjet printer double-sheet ejecting mechanism according to claim 1, characterized by, The locking driving assembly comprises a locking driving plate, a locking pull rod, and a locking driving member; 3. The sheet-fed rotary inkjet printer double-sheet eject mechanism according to claim 2, characterized in that, The locking driving plate is hinged to the frame, and a locking reset member is arranged between the top end of the locking driving plate and the bottom end of the locking plate; 4. The sheet-fed rotary inkjet printer double-sheet ejecting mechanism according to claim 3, characterized by One end of the locking pull rod is hinged to the bottom end of the locking driving plate, a pull rod reset member is arranged between the locking pull rod and the frame, and the other end of the locking pull rod is hinged to the locking driving member; 5. The sheet-fed rotary inkjet printer double-sheet eject mechanism of claim 1, wherein The locking plate, the locking driving plate, and the locking pull rod are not located in the same vertical plane.

6. The sheet-fed rotary inkjet printer double-sheet eject mechanism of claim 1, wherein The pull rod reset member and the locking driving member are arranged on both sides of the locking driving plate along the conveying direction of the paper. The locking reset member and the pull rod reset member are both tension springs, and the locking driving member is a pneumatic cylinder. ​ ​ 7. The sheet-fed rotary inkjet printer double-sheet eject mechanism of claim 6, wherein ​ 8. The sheet-fed rotary inkjet printer double-sheet eject mechanism of claim 6, wherein ​

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