CN215203941U

CN215203941U - Multicolor printing machine

Info

Publication number: CN215203941U
Application number: CN202022839952.6U
Authority: CN
Inventors: 梁金武
Original assignee: Shenzhen Tianbang Printing And Packaging Co ltd
Current assignee: Shenzhen Tianbang Printing And Packaging Co ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-12-17
Anticipated expiration: 2030-11-30

Abstract

The utility model relates to a lithography apparatus's technical field aims at providing a polychrome printing machine, it include the paper feeding unit, with the printing unit that the paper feeding unit is connected and with the delivery unit that the printing unit is connected, the printing unit includes frame and a plurality of printing mechanism, and is a plurality of the printing mechanism is in set up in order in the frame, the end of frame is provided with UV curing system, UV curing system is including setting up support, the setting of frame both sides are in UV lamp stand on the support and installing UV curing lamp on the UV lamp stand, be provided with the drive on the support UV lamp stand vertical motion's elevating system. The utility model discloses can avoid printing picture and text appear gluing the flower, set off bad phenomenon such as dirty, improve printing quality.

Description

Multicolor printing machine

Technical Field

The utility model relates to a lithography apparatus's technical field, concretely relates to polychrome printing machine.

Background

An offset printing press is a kind of offset printing press, in which printing images are first printed on a blanket cylinder from a printing plate and then transferred to paper by the blanket cylinder. Offset presses can be divided into sheet-fed offset presses and web-fed offset presses according to different paper feeding modes; the printing color number completed by one-time paper feeding can be divided into single-color, double-color, four-color and multi-color printing machines; the full-paper printing machine can be divided into a small offset press, a six-opening, four-opening, two-opening and full-paper printing machine according to the maximum paper breadth to be printed, and a double-sided printing machine capable of simultaneously finishing two-sided printing by one-time paper feeding is also arranged.

The existing multicolor printing machine generally comprises a paper feeding unit, a plurality of printing units and a paper collecting unit, wherein the paper feeding unit realizes continuous single-sheet paper feeding, the printing units transfer images and texts onto printing paper, and the paper collecting unit collects and arranges the printed paper.

The existing multicolor printing machine has the following problems: after the printing of paper is accomplished at the printing unit, printing ink is not thoroughly dry just is conveyed the delivery unit, at the in-process of delivery unit transmission, leads to the printing picture and text to appear sticking flower, draw bad phenomena such as china ink easily, and traditional processing method is to stop the printing machine after the printing machine and wax or wipe special medicament on the cylinder surface of form advancing, not only wastes time and energy, and the effect is not good moreover, can't avoid sticking flower, the emergence of smearing bad phenomenon such as dirty completely, influences the printing quality.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main objective is that the bad phenomenon such as gluing flower, set-off appear in the printing picture and text of solving current polychrome printing machine existence influences the problem of printing quality.

In order to realize the technical problem, the utility model provides a multicolor printing machine.

The utility model adopts the technical proposal that: including last paper unit, with go up the printing unit that paper unit is connected and with the delivery unit that printing unit is connected, printing unit includes frame and a plurality of printing mechanism, and is a plurality of printing mechanism is in set up in order in the frame, the end of frame is provided with UV curing system, UV curing system is including setting up the support of frame both sides, setting are in UV lamp stand on the support and installing UV curing lamp on the UV lamp stand, be provided with the drive on the support UV lamp stand vertical motion's elevating system.

On the basis of the technical scheme, the utility model discloses can also make following improvement:

optionally, the lifting mechanism comprises a driving cylinder fixedly mounted on the support, a guide rail is arranged on the inner side of the support, sliding grooves matched with the guide rail are formed in the two sides of the UV lamp holder, and the driving cylinder is connected with the UV lamp holder.

Optionally, a paper moisture detection device is arranged at the front end of the UV lamp holder, and the paper moisture detection device is electrically connected with the UV curing system, and the detection direction of the paper moisture detection device is vertically downward.

Optionally, both sides of the UV lamp holder are provided with downward arc-shaped lamp covers.

Optionally, the sheet moisture detection device comprises a near infrared reflective moisture meter.

Optionally, an air drying box is arranged between every two adjacent printing mechanisms, and the upper end of the air drying box is provided with a plurality of fans.

Optionally, go up the paper unit including putting the paper platform and setting up put the platform of form advancing of paper platform one side, it is provided with paper feed mechanism, branch paper mechanism and nipper to put paper platform top, the platform of form advancing includes the feeder board, sets up belt drive mechanism on the feeder board, set up and be in the paper guide mechanism and the setting of feeder board top are in the fender rule at feeder board end.

Optionally, the paper guide mechanism includes a mounting frame, and a paper pressing wheel, a paper pressing ball, and a paper pressing brush wheel sequentially arranged along the paper direction.

Optionally, the delivery unit includes delivery transport mechanism and sets up delivery platform at delivery transport mechanism is terminal, delivery transport mechanism includes delivery sprocket, driven sprocket and connects delivery sprocket with driven sprocket's delivery chain, be provided with a plurality of delivery gripper bars on the delivery chain, adjacent two the interval between the delivery gripper bar equals.

Optionally, the front end of the delivery platform is provided with a front positioning mechanism, the rear end of the delivery platform is provided with a rear positioning mechanism, and the left side and the right side of the delivery platform are symmetrically provided with side positioning mechanisms.

According to the technical scheme, the multicolor printing machine has the advantages and positive effects that: the UV curing system is additionally arranged between the printing unit and the paper collecting unit, and the UV curing lamp is adopted to irradiate the printed product, so that the curing of the printing ink on the printed product is accelerated, the printing ink is completely dried, the problems of sticking and smearing are avoided, the printed product is ensured to be bright in color, the scratching, fading and the like are avoided, and the printing quality is improved; simultaneously, through the height of the adjustable UV curing lamp of elevating gear to the temperature that shines is controlled to the distance between control UV curing lamp and the printed matter, prevents that the high temperature from making UV printing ink automatic burst, leads to the printed matter to scrap.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for a person skilled in the art that other drawings can be obtained according to the drawings without inventive exercise:

fig. 1 schematically shows a structural view of the present invention;

FIG. 2 schematically shows a structural view of a UV curing system;

wherein the corresponding relations between the reference numbers and the names of the components in fig. 1 and 2 are as follows:

1. the printing device comprises a paper feeding unit, 2, a printing unit, 3, a paper collecting unit, 11, a paper placing platform, 12, a paper feeding platform, 21, a frame, 22, a printing mechanism, 23, a UV curing system, 24, an air drying box, 31, a paper

collecting conveying mechanism

31, 32, a paper collecting platform, 231, a support, 232, a UV lamp holder, 233 and a UV curing lamp, 234 and a driving cylinder.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail with reference to the accompanying examples and figures 1-2.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the communication may be direct, indirect via an intermediate medium, or internal to both elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 1 and 2, in the present embodiment, the multicolor printing machine includes an upper paper unit 1, a printing unit 2 connected to the upper paper unit 1, and a delivery unit 3 connected to the printing unit 2, wherein the upper paper unit 1 realizes continuous sheet feeding, the printing unit 2 transfers a pattern to a printing sheet, and the delivery unit 3 collects and arranges the printed sheets.

Specifically, the printing unit 2 includes a frame 21 and a plurality of printing mechanisms 22, in this embodiment, the number of the printing mechanisms 22 is 3, and 3 printing mechanisms 22 are sequentially disposed on the frame 21, so as to realize automatic multicolor printing; the tail end of the rack 21 is provided with the UV curing system 23, the UV curing system 23 comprises supports 231 arranged on two sides of the rack 21, UV lamp holders 232 arranged on the supports 231 and UV curing lamps 233 arranged on the UV lamp holders 232, the UV curing lamps 233 are adopted to irradiate the printed product, so that the curing of ink on the printed product is accelerated, the ink is completely dried, the problems of sticking and smearing are avoided, the printed product is ensured to be bright in color, the scratching, fading and the like are avoided, and the printing quality is improved; the bracket 231 is provided with a lifting mechanism for driving the UV lamp holder 232 to vertically move, and the height of the UV curing lamp 233 can be adjusted through a lifting device, so that the irradiation temperature is controlled by controlling the distance between the UV curing lamp 233 and a printed product, and the printed product is prevented from being scrapped due to the fact that the UV ink is automatically burst due to overhigh temperature.

In one embodiment, the lifting mechanism includes a driving cylinder 234 fixedly mounted on the bracket 231, a guide rail is disposed on the inner side of the bracket 231, sliding grooves matched with the guide rail are disposed on two sides of the UV lamp holder 232, the driving cylinder 234 is connected with the UV lamp holder 232, sliding fit between the UV lamp holder 232 and the bracket 231 is achieved through the guide rail and the sliding grooves, and the driving cylinder 234 provides power for up-and-down movement of the UV lamp holder 232.

In one embodiment, a paper moisture detection device is arranged at the front end of the UV lamp holder 232, the paper moisture detection device is electrically connected with the UV curing system 23, the detection direction of the paper moisture detection device is vertical to the downward direction, when the excessive ink moisture on the surface of a printed matter is detected, the UV curing system 23 turns on the UV curing lamp 233, the waste of electric energy is avoided, meanwhile, the damage caused by the long-time turning on of the UV curing lamp 233 is avoided, and the service life of the UV curing lamp 233 is prolonged.

In this embodiment, the two sides of the UV lamp holder 232 are provided with downward arc-shaped lamp covers to prevent light of the UV curing lamps 233 from radiating outward from the two sides to cause light pollution.

Preferably, the paper moisture detection device comprises a near-infrared reflection type moisture measuring instrument, and has the following advantages: 1. a reflective measurement mode, without contact with the paper; 2. the multi-beam measurement technology has accurate measurement and overcomes the influence of chromatic aberration change on the measurement precision; 3. the instrument adopts special optical signals and electric signals for processing, and is not influenced by the ambient temperature and relative humidity; 4. the instrument adopts a special structural design, does not need cooling water, is convenient to install, is simple to operate and runs stably and reliably; 5. has the function of water overrun alarm.

In this embodiment, every two are adjacent be provided with air-dry box 24 between printing mechanism 22, air-dry box 24's upper end is provided with a plurality of fans, can air-dry when getting into next color printing after accomplishing a color printing technology, can live the color steadily, can not take place to warp by the panel of guaranteeing the quality again, has promoted the printing quality of printed matter.

In this embodiment, the paper feeding unit 1 includes a paper placing platform 11 and a paper feeding platform 12 disposed on one side of the paper placing platform 11, a paper feeding mechanism, a paper separating mechanism and a paper pressing mechanism are disposed above the paper placing platform 11, and the paper feeding mechanism, the paper separating mechanism and the paper pressing mechanism can realize stable single-sheet continuous paper feeding to avoid the occurrence of two-sheet and multi-sheet situations; the platform 12 of form advancing includes the feeding board, sets up belt drive mechanism on the feeding board, sets up the paper guide mechanism and the setting of feeding board top are in the terminal rule that keeps off of feeding board, the paper guide mechanism can ensure the steady transmission of paper on the feeding board, avoids appearing the paper drift, keep off the rule and can fix a position the paper before getting into printing unit 2 in the past, avoid appearing crooked after the paper gets into printing unit 2, lead to the printing dislocation.

In this embodiment, the paper guide mechanism includes the mounting bracket and presses paper wheel, paper ball and the brush wheel of pressing paper that set gradually along the paper direction. Specifically, the paper pressing wheel enables paper to be reliably contacted with the belt, sufficient friction force is generated, the paper moves forwards stably, and the paper and the belt are prevented from sliding relatively; the paper pressing brush wheel and the paper pressing ball can prevent the paper from rebounding after being positioned, the paper pressing brush wheel is used when the thin paper is printed, and the paper pressing ball is used when the thick paper is printed.

In this embodiment, the delivery unit 3 includes a delivery conveying mechanism 31 and a delivery platform 32 disposed at the end of the delivery conveying mechanism 31, the delivery conveying mechanism 31 includes a delivery sprocket, a driven sprocket and a delivery chain connecting the delivery sprocket and the driven sprocket, the delivery chain is provided with a plurality of delivery gripper bars, the distance between two adjacent delivery gripper bars is equal, the design adopts a chain transmission manner to deliver paper, the chain transmission is an engagement transmission with an intermediate disturbance member, and has some characteristics of both gear transmission and belt transmission, and has the characteristics of high transmission efficiency, low requirements for manufacturing and installation accuracy, strong adaptability to environment, and the like.

In this embodiment, the delivery platform 32 has a front positioning mechanism at the front end, a rear positioning mechanism at the rear end, and side positioning mechanisms symmetrically arranged at the left and right sides for positioning and neatly stacking the printed sheets delivered from the delivery mechanism 31 on the delivery platform 32.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A multicolor printing press characterized by: including last paper unit, with go up the printing unit that paper unit is connected and with the delivery unit that printing unit is connected, printing unit includes frame and a plurality of printing mechanism, and is a plurality of printing mechanism is in set up in order in the frame, the end of frame is provided with UV curing system, UV curing system is including setting up the support of frame both sides, setting are in UV lamp stand on the support and installing UV curing lamp on the UV lamp stand, be provided with the drive on the support UV lamp stand vertical motion's elevating system.

2. The multicolor printing press according to claim 1, wherein: elevating system includes fixed mounting drive actuating cylinder on the support, the inboard of support is provided with the guide rail, the both sides of UV lamp stand be provided with guide rail matched with spout, drive actuating cylinder with the UV lamp stand is connected.

3. The multicolor printing press according to claim 1, wherein: the front end of the UV lamp holder is provided with a paper moisture detection device, and the paper moisture detection device is electrically connected with the UV curing system.

4. The multicolor printing press according to claim 1, wherein: and downward arc-shaped lamp covers are arranged on two sides of the UV lamp holder.

5. A multicolor printing press according to claim 3, wherein: the paper moisture detection device comprises a near-infrared reflection type moisture measuring instrument.

6. The multicolor printing press according to claim 1, wherein: every two adjacent be provided with the air-drying box between the printing mechanism, the upper end of air-drying box is provided with a plurality of fans.

7. The multicolor printing press according to claim 1, wherein: go up the paper unit including putting the paper platform and setting up put the platform of form advancing of paper platform one side, it is provided with paper feed mechanism, branch paper mechanism and nipper to put paper platform top, the platform of form advancing includes the feeder plate, sets up belt drive mechanism on the feeder plate, set up and be in the paper guide mechanism and the setting of feeder plate top are in the stopper rule at feeder plate end.

8. The multicolor printing press according to claim 7, wherein: the paper guide mechanism comprises a mounting frame, and a paper pressing wheel, a paper pressing ball and a paper pressing hairbrush wheel which are sequentially arranged along the paper direction.

9. The multicolor printing press according to claim 1, wherein: the delivery unit includes delivery transport mechanism and sets up delivery platform at delivery transport mechanism is terminal, delivery transport mechanism includes delivery sprocket, driven sprocket and connects delivery sprocket with driven sprocket's delivery chain, be provided with a plurality of delivery gripper bars on the delivery chain, adjacent two interval between the delivery gripper bar equals.

10. The multicolor printing press according to claim 9, wherein: the front end of the paper collecting platform is provided with a front positioning mechanism, the rear end of the paper collecting platform is provided with a rear positioning mechanism, and the left side and the right side of the paper collecting platform are symmetrically provided with side positioning mechanisms.