CN209388114U - A kind of LED directional light printer - Google Patents

Abstract

The utility model discloses a kind of LED directional light printers, including base and the control panel being mounted on base front end face, the inside of the base is equipped with printing down chamber, the top of the printing down chamber is the working face of a light transmission, the upper end of the base is additionally provided with the removable cover that the working face is closed for removable cover, and the removable cover lid forms closed printing down space after closing the working face；Light supply apparatus is equipped in the printing down chamber, the bottom of the printing down chamber is equipped with the driving device for moving horizontally light supply apparatus, and the light supply apparatus and driving device are electrically connected to the control panel；The light supply apparatus includes LED lamp source and the light trough for installing the LED lamp source, and the top of the light trough is equipped with so that the light ray parallel that LED lamp source is issued vertically projects the rectilinear lens of the working face.The utility model uses LED lamp source and rectilinear lens, to solve because of the halftone modification caused by fever of traditional plate burning light.

Description

A kind of LED directional light printer

Technical field

The utility model relates to printer, in particular to a kind of LED directional light printer.

Background technique

Currently, printer is one of capital equipment of printing industry, structure generally comprises workbench, light source, vacuum and takes out Device and control panel are inhaled, wherein light source generally uses metal halid lamp-Iodine gallium light, and light source in traditional printer structure Generally fixed form fits closely master with light sensitive plate using pressure, photochemical reaction occurs by light-illuminating, by glue The image of the on piece system of accurately shining is on halftone.But it is inclination and diverging that light source is easy light in irradiation process, is made Target cannot equably be irradiated at work by obtaining light, and there are deviations for radiation response, and the halftone font after printing down is fuzzy or turns round Song, printing down effect is poor, as shown in Figure 1.

Summary of the invention

The technical problem to be solved by the present invention is to provide a kind of LED directional light printers, to solve in the prior art Divergence of beam leads to the problem of printing down effect difference.

In order to solve the above-mentioned technical problem, the technical solution of the utility model are as follows: a kind of LED directional light printer, including The inside of base and the control panel being mounted on base front end face, the base is equipped with printing down chamber, the printing down chamber Top is the working face of a light transmission, and the upper end of the base is additionally provided with the removable cover that the working face is closed for removable cover, The removable cover lid forms closed printing down space after closing the working face；Light supply apparatus, institute are equipped in the printing down chamber The bottom of printing down chamber is stated equipped with the driving device for moving horizontally light supply apparatus, the light supply apparatus and driving device are electric It is connected to the control panel, the driving device includes servo motor and movable driver plate, and one end of the driver plate is logical It crosses gear drive to be connected with the output shaft of servo motor, the bottom of the printing down chamber is equipped with the cross mobile for the driver plate Slot；The light supply apparatus includes LED lamp source and the light trough for installing the LED lamp source, the top of the light trough be equipped with so that The light ray parallel that LED lamp source is issued vertically projects the rectilinear lens of the working face, the bottom of the light trough and the transmission Plate is connected.

As an improvement, the bottom of the base is equipped with vacuum pump, the vacuum pump passes through suction tube and the printing down space It is connected, the vacuum pump is electrically connected with the control panel.

As an improvement, the left and right ends of the translot are respectively equipped with travel switch, the travel switch and control panel electricity Connection.

As an improvement, the driving device further includes the guide rail for being oriented to the driver plate, the driver plate is equipped with Fit in the sliding block slided on guide rail.

As an improvement, the control panel is movably mounted on the base by shaft, on the control panel also Equipped with the support rod for being used to support the control panel.

As an improvement, the removable cover is closed on the working face by the gentle bar removable cover of latch hook.

As an improvement, being fixed with radiator on the light trough.

Compared with prior art, the beneficial effects of the utility model are.

(1) rectilinear lens 52 of the working face 20 is vertically projected by the light ray parallel that LED lamp source 50 is issued, then The light of diverging is converted into parallel rays by linear lens 52, solve font after 13 printing down of halftone will appear fuzzy, distortion, Shadow or ghost problems.

(2) it is compared with the directional light printer of existing plane, the driving device that the utility model uses can accomplish length 2 meters are lengthened to, can be realized large-breadth precise plate-making.

(3) the utility model uses LED lamp source and rectilinear lens, to solve because caused by the fever of traditional plate burning light Halftone modification.

(4) in the case where reaching effect same, power used in LED lamp source is the one third of traditional lamp source.

(5) the general service life of LED lamp source is at 10000 hours or more, and traditional lamp source at 3000 hours hereinafter, subtracting Maintenance cost in small use process.

Detailed description of the invention

Fig. 1 is the direction of illumination schematic diagram of printer light in the prior art.

Fig. 2 is the structural schematic diagram of the utility model.

Fig. 3 is the schematic diagram of internal structure of the utility model.

Fig. 4 is positional structure schematic diagram of the utility model about light supply apparatus and driving device.

Fig. 5 is the enlarged drawing in Fig. 3 at A.

Fig. 6 is structural schematic diagram of the utility model about travel switch.

Fig. 7 is structural schematic diagram of the utility model about light supply apparatus.

Fig. 8 is structural schematic diagram of the utility model about control panel.

Fig. 9 is structural schematic diagram of the utility model about removable cover.

Figure 10 is direction of illumination schematic diagram of the utility model about light after rectilinear lens.

Figure 11 is irradiated after the utility model becomes parallel rays about the linear lens of divergent rays that LED lamp source issues Structural schematic diagram on halftone and film.

Figure 12 is the first embodiment of the utility model about rectilinear lens.

Figure 13 is second embodiment of the utility model about rectilinear lens.

In figure:

Base 1, printing down chamber 2, removable cover 3, control panel 4, light supply apparatus 5, driving device 6, vacuum pump 7, printing down Space 8, latch hook 9, gas bar 10, shaft 11, support rod 12, halftone 13, film 14, working face 20, translot 21, travel switch 22, LED lamp source 50, light trough 51, rectilinear lens 52, servo motor 60, driver plate 61, output shaft 62, guide rail 63, sliding block 64, gear 65, focus F.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing.

As shown in Fig. 2, Fig. 3, Fig. 6, Fig. 8 and Fig. 9, a kind of LED directional light printer, including base 1 and it is mounted on base 1 Control panel 4 on front end face, the inside of the base 1 are equipped with printing down chamber 2, and the top of the printing down chamber 2 is a light transmission Working face 20, specifically, working face 20 is made of glass, and the finish of glass, flatness, transparency are different from one As civilian glass, cannot have scratch, bubble above.In use, sundries cannot be arbitrarily placed thereon, in order to avoid scratch glass The cotton wiping of glass, wiping 20 Shi Yaoyong wine clear of the working face absorbent cotton impregnated or non-hair loss, extends its use to the maximum extent Service life.The upper end of the base 1 is additionally provided with the removable cover 3 that the working face 20 is closed for removable cover, the removable cover 3 It is closed on the working face 20 by gentle 10 removable cover of bar of latch hook 9.When needing to open removable cover 3, latch hook 9 is unlocked, to On lift removable cover 3, removable cover 3 is gradually opened under slowly the strutting of gas bar 10, and operator can be 13 He of halftone Film 14 is placed on working face 20, then presses down on removable cover 3, and the lid of removable cover 3 is formed after closing the working face 20 Closed printing down space 8, the process of printing down can be started by operating control panel 4 at this time.It should be further noted that in this reality It applies in example, preferably removable cover 3 is the blanket of a black, achievees the purpose that seal halftone 13 and film 14, is placing net It when version 13, to handle with care, in order to avoid the arris of halftone 13 scratches blanket sealing strip, influence to be evacuated effect, on blanket One layer of panne velvet cloth or thin woollen cloth can be put, the aeration of blanket on the one hand can be improved, it on the other hand can be to avoid pumping When gas on the decorative pattern reverse printed on glass of blanket, reduce the labor intensity that operator often wipes.In addition, for cooperation blanket The quality of photocopy is used and improved, the shade that light projection generates is reduced, the bottom of the base 1 is equipped with vacuum pump 7, vacuum pump 7 are connected by suction tube with the printing down space 8, and vacuum pump 7 is electrically connected with the control panel 4.After vacuumizing, the rubber Cloth can be tightly pressed against on halftone 13, and make to be stacked together has picture and text film 14 and halftone 13 with being in subnormal ambient, to the greatest extent Amount is close to seamless, keeps image exposure photocopy accurate, reinforces its printing down effect.The professional standard in China is at present: working Halftone 13 should keep the full contact with glass surface in the process, and vacuum system should be able to obtain the vacuum of 80kPa, work in 60s Vacuum degree should not decline during work.The utility model is the higher machinery equipment of optoelectronic integration degree, to the relatively wet of environment Degree, temperature and the vacuum degree of pumping have the specific requirement of specification, and to be no more than 70%, 25 DEG C of temperature or so are envionmental humidity Preferably, exposure vacuum degree should be not less than subject to 0.08Mpa.If humidity is larger in room, temperature it is higher can to printer control electricity Road stability generate large effect, because humidity increase by reduce integrated circuit service life and operating circuit it is reliable Property, thus cause the rate of breakdown of printer to increase, while generating adverse effect to component of machine, accelerate mechanical wear Speed.Humidity is larger to have a negative impact to halftone 13 and the close knot degree of film 14, after humidity increases, film 14 and halftone 13 Between generate oily diffraction ripple, cause the air between blanket and glass plate that cannot be completely exhausted out, halftone after exposure development 13 sites are apprehensive.Due to the particularity of mask-making technology, so that plate-making environment has relatively high requirement, plateroom requires sealing Well, the direct irradiation of strong light is avoided.On the one hand dust-proof effect can be played by doing so, still further aspect can avoid halftone 13 Exposure and light leakage during storage or printing down.If during printing down thick air a large amount of dust, larger particles Dust may fall in 13 surface of halftone or due to film 14 electrostatic adsorption and be adhered to the surface of film 14, in printer In pumping process before exposure, it will have a direct impact on the degree of combining closely of halftone 13 Yu film 14, just can be observed after development It is apprehensive or the dirty point of graininess occur to shine the part of halftone 13 out, influences the reproduction of original copy cable density.It can be seen that vacuum pump 7 It is also possible that 8 dust removal of printing down space, guarantees that it can be to work under dustfree environment.

Furthermore, it is necessary to further illustrate, so-called printing down as exposes, printing down be by be loaded with picture and text film 14, Picture and text on template and other carriers for having higher clarity, by expose by picture and text photocopy to be coated with photosensitive object halftone, PS editions, the work on the materials such as resin plate.It is dried after one layer of light-sensitive surface is coated on halftone, PS editions, resin plate surface, will there is image Film 14 be covered on above, by strong illumination film 14, the image on film 14 is exposed photosensitive in photocopy to plate On film, the process of this exposure photocopy is commonly called as printing down.Printer is a kind of contact exposure imaging device for making printing plate, benefit With pressure (including atmospheric pressure and mechanical pressure), fit closely master with light sensitive plate, it, will be former will pass through photochemical reaction Image in the version system of accurately shining is on light sensitive plate.The utility model preferably uses halftone 13.

As shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, light supply apparatus 5, the bottom of the printing down chamber 2 are equipped in the printing down chamber 2 Portion is equipped with the driving device 6 for moving horizontally light supply apparatus 5, and the light supply apparatus 5 and driving device 6 are electrically connected to described Control panel 4.In the present embodiment, the driving device 6 includes servo motor 60 and movable driver plate 61, the driver plate 61 one end is connected by the transmission of gear 65 with the output shaft 62 of servo motor 60, when servo motor 60 works, servo motor 60 Drive the rotation of output shaft 62 to export its power, and 62 synchronous drive gear 65 of output shaft rotates, and gear 65 then passes through belt (not shown) drives driver plate 61 to move left and right, and accordingly, the bottom of the printing down chamber 2, which is equipped with, is used for the driver plate 61 mobile translots 21, the left and right ends of the translot 21 are respectively equipped with travel switch 22, and the travel switch 22 is for limiting It the shift motion in the horizontal direction of driver plate 61 and is electrically connected with control panel 4.In order to enable driver plate 61 can be smoothly It is moved in translot 21, the driving device 6 further includes the guide rail 63 for being oriented to the driver plate 61, on the driver plate 61 Equipped with the sliding block 64 slided on guide rail 63 is fitted in, guarantee that driver plate 61 can be moved directly, to guarantee light supply apparatus 5 Both ends remain on same vertical line and do not shift.In addition, driving device 6 can also matching with screw rod and feed screw nut It closes and uses to replace gear 65 and belt, servo motor 60 drives screw rod to rotate, and feed screw nut is then connected with driver plate 61, silk Stem nut fits in rotation on screw rod and also achievees the purpose that mobile driver plate 61 to drive driver plate 61 to move back and forth.Driving Device 6 is not limited to above-mentioned specific embodiment, should also belong to as long as can reach the mode of steady mobile driver plate 61 In the protection scope of the utility model.

As shown in Fig. 3, Fig. 4, Fig. 7, Figure 10, Figure 11, the light supply apparatus 5 is described including LED lamp source 50 and for installing The light trough 51 of LED lamp source 50, in the case where reaching effect same, power used in LED lamp source 50 is the three of traditional lamp source / mono-, the general service life of LED lamp source 50 at 10000 hours or more, and traditional lamp source at 3000 hours hereinafter, reduce Maintenance cost in use process.In the present invention, for the ease of the heat dissipation of LED lamp source 50, lead on the light trough 51 It crosses screw and is fixedly installed with radiator (not shown), prevent LED lamp source 50 from overheating.The bottom of the light trough 51 and the biography Movable plate 61 is connected, so that driver plate 61 is able to drive the movement of light trough 51 when mobile, 51 synchronous drive LED lamp source 50 of light trough is mobile, Realize the accurate printing down of large format of the length within two meters.In addition, the top of the light trough 51 is equipped with so that 50 institute of LED lamp source The light ray parallel of sending vertically projects the rectilinear lens 52 of the working face 20, compared with existing printer, existing printing down The light source of machine be diverging, with diverging light will cause film 14 and production 13 pattern of halftone and font size it is corresponding not on, spy Not for the font of 0.2 height, font will appear fuzzy, distortion, shadow or the problems such as ghost image after 13 printing down of halftone. It should be further noted that the rectilinear lens 52 of the utility model is that the light of diverging is converted into parallel rays, in order to reach To the above effect, the rectilinear lens 52 can be convex lens, see Figure 12, the divergent rays that issue LED lamp source 50 become At parallel rays, it should LED lamp source 50 be placed on the focus F of convex lens, the focus of so-called convex lens refers to being parallel to master The light of axis is by convex lens post-concentration in the point F on primary optical axis, and this point is exactly the focus F of convex lens, so that through excess convexity The divergent rays of lens are converted into parallel lines, to solve 13 pattern of halftone of film 14 and production and font size is inconsistent asks Topic.In addition, the rectilinear lens 52 of the utility model can also be Fresnel Lenses, the Fresnel Lenses also known as Fresnel lens, Mostly it is the thin slice as made of polyolefine material injection pressure, also has glass to make, lens surface is smooth surface, another side imprinting on one side Ascending concentric circles, its texture are according to the interference of light, disturb and penetrate and relative sensitivity and receiving angle requirement are set Meter, see Figure 13.The basic principle of Fresnel Lenses is on lens continuous surface part " collapse " a to plane, from section It sees, surface is made of a series of sawtooth pattern grooves, and central part is ellipse camber line, between each groove part and adjacent grooves Angle is different, but all concentrates light at one, forms gonglion, that is, the focus of lens, each groove can be seen as Light is adjusted to directional light or optically focused by one independent lenslet, and this lens can also eliminate Part-spherical aberration.When making With common convex lens, it may appear that dimmed, the fuzzy phenomenon in corner, this is because the refraction of light only occurs in the boundary of medium Face, convex lens sheet is thicker, and the part of light straightline propagation in glass can make light attenuation.If straightline propagation can be removed Part, only retains the curved surface reflected, just can save lot of materials while reach identical spotlight effect.Fresnel lens is just It is using this principle, Fresnel Lenses appears as a piece of glass for having countless multiple concentric circles lines (i.e. Fresnel zone) Glass can but achieve the effect that convex lens, if projection source is divergent rays, enable to send out after Fresnel Lenses converges The astigmatism congruence is polymerized to parallel rays, so as to be able to maintain brightness throughout consistent for the image on halftone 13, guarantees glue to the maximum extent Piece 14 is consistent with 13 pattern of halftone of production, the size of text.

As an improvement, the control panel 4 is movably mounted on the base 1 by shaft 11, the control panel 4 On be additionally provided with the support rod 12 for being used to support the control panel 4, one end of the support rod 12 is fixed on removable cover 3, separately One end is fixed on unit 1, its tilt angle is adjusted by shaft 11 in control panel 4, to adapt to the operator of different height Operation of the member to control panel 4.

In conclusion the utility model is solved using LED lamp source 50 and rectilinear lens 52 because generating heat in traditional plate burning light Caused by 13 modification of halftone, ensure that the quality of printing down.

The preferred embodiments of the present invention have been described in detail above.It should be appreciated that the ordinary skill people of this field Member according to the present utility model can conceive without creative work makes many modifications and variations.Therefore, all this technology necks Technical staff passes through logic analysis, reasoning or limited reality according to the design of the utility model on the basis of existing technology in domain Available technical solution is tested, it all should be within the scope of protection determined by the claims.

Claims (7)

1. a kind of LED directional light printer, it is characterised in that: including base (1) and the control being mounted on base (1) front end face The inside of panel (4), the base (1) is equipped with printing down chamber (2), and the top of the printing down chamber (2) is the work of a light transmission Face (20), the upper end of the base (1) is additionally provided with the removable cover (3) that the working face (20) is closed for removable cover, described Removable cover (3) lid closes the working face (20) and forms closed printing down space (8) afterwards；

Light supply apparatus (5) are equipped in the printing down chamber (2), the bottom of the printing down chamber (2) is equipped with for moving horizontally light The driving device (6) of source device (5), the light supply apparatus (5) and driving device (6) are electrically connected to the control panel (4), The driving device (6) includes servo motor (60) and movable driver plate (61), and one end of the driver plate (61) passes through tooth Wheel (65) transmission is connected with the output shaft (62) of servo motor (60), and the bottom of the printing down chamber (2), which is equipped with, is used for the biography The mobile translot (21) of movable plate (61)；

The light supply apparatus (5) includes LED lamp source (50) and the light trough (51) for installing the LED lamp source (50), the lamp The top of slot (51) is equipped with so that the light ray parallel that LED lamp source (50) is issued vertically projects the linear of the working face (20) The bottom of mirror (52), the light trough (51) is connected with the driver plate (61).

2. LED directional light printer according to claim 1, it is characterised in that: the bottom of the base (1) is equipped with vacuum It pumps (7), the vacuum pump (7) is connected by suction tube with the printing down space (8), the vacuum pump (7) and the control plane Plate (4) electrical connection.

3. LED directional light printer according to claim 1, it is characterised in that: the left and right ends of the translot (21) point Not She You travel switch (22), the travel switch (22) is electrically connected with control panel (4).

4. LED directional light printer according to claim 1, it is characterised in that: the driving device (6) further includes being used for It is oriented to the guide rail (63) of the driver plate (61), the driver plate (61) is equipped with and fits in the sliding block slided on guide rail (63) (64).

5. according to claim 1 to LED directional light printer described in any one of 4 claims, it is characterised in that: the control Panel (4) is movably mounted on the base (1) by shaft (11), is additionally provided with and is used to support on the control panel (4) The support rod (12) of the control panel (4).

6. LED directional light printer according to claim 1, it is characterised in that: the removable cover (3) passes through latch hook (9) gentle bar (10) removable cover closes on the working face (20).

7. LED directional light printer according to claim 1, it is characterised in that: be fixed with heat dissipation on the light trough (51) Device.