CN208270941U - A kind of printing down light emitting device for printer - Google Patents

Abstract

The utility model discloses a kind of printing down light emitting devices for printer, including LED circuit board, aluminum soleplate, Aluminum cover and transformer, LED circuit board is mounted on the surface of aluminum soleplate, the bottom surface of aluminum soleplate is equipped with cooling trough, connection between the bottom surface and Aluminum cover of aluminum soleplate is so that cooling trough forms sealing cooling duct, Aluminum cover is equipped with the inlet and outlet with cooling duct, and transformer is mounted on Aluminum cover and is connected by cable with LED circuit board.The utility model can guarantee operating temperature between 20~25 DEG C, stablize, good airproof performance, LED, which shines, has the advantages that cleaning, safe and stable, light efficiency utilization rate is high, and the spectral sensitivity with PS editions matches, compared with conventional light source metal halid lamp, accelerated ageing can be prevented, not only can be shortened the time for exposure, but also plate resolving power can be improved, reduce site variation, light source abuts halftone edge, can be shortened the time for exposure, reaches the advantages of printing down is rapidly completed.

Description

A kind of printing down light emitting device for printer

Technical field

The utility model relates to printers, and in particular to a kind of printing down light emitting device for printer.

Background technique

Traditional printer is that worker will shine halftone (or steel version) and be placed on glass appropriate location using step, and pumping is switched It opens, upper cover rubber glue can slowly be sucked pressure toward halftone, and exposure button is pressed, and dodge gate is opened, this printer time work Work starts；The solarization halftone time arrives, and dodge gate automatically returns to original position.Continue similar solarization if any screen type at this time, can not turn off the light, can connect Printing down a few hours.After closing plate burning light, forbid turning on light immediately, until 3-5 minutes after turn on light again.

Not only elapsed time is long for this process, lost labor, increases cost, influences manufacturing schedule.Therefore, in actual production In the process, automated process, reduction time for exposure have become a technical problem urgently to be resolved.In addition, fluorescent tube when Between it is long can aging, so that spectral radiance can change, the uniformity of illumination is affected, preferably seek to metering fluorescent tube work Make the time, is replaced in time before the defined longest working time expires.

Utility model content

Technical problem to be solved by the utility model is: in view of the above problems in the prior art, providing a kind of for printing down The printing down light emitting device of machine.The utility model replaces the fluorescent tube with reflector using LED circuit board, is increased using time lifetime It is long, it does not need often to replace fluorescent tube.The utility model is shone in the water-cooling heat radiating device replacement that printing down works using LED circuit board Type exhausting cooling system is set, the heat of fluorescent tube can be distributed in time, guarantees operating temperature between 20~25 DEG C, is stablized, sealing Property is good, reaches best printing down effect；The intensity of light source is also to influence the factor of time for exposure, and the intensity of light source refers to that light source acts on The size of energy on light-sensitive surface, its at a distance from light source used, light source and halftone (lamp away from) is related, if lamp away from changing, Optimum exposure time must be recalculated.Time for exposure and lamp are away from quadratic relationship, empirical evidence, if lamp is exposed away from increasing by 1 times It then needs to increase by 3 times between light time, whereas if reducing 1 times of lamp away from the time for exposure should be kept to original a quarter, this is practical The LED circuit board of outfit can be more closely close to halftone, therefore the time for exposure reduces exposure at multiple than traditional printer Time saves the time, greatly improves production efficiency.

In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model are as follows:

A kind of printing down light emitting device for printer, including LED circuit board, aluminum soleplate, Aluminum cover and transformer, it is described LED circuit board is mounted on the surface of aluminum soleplate, and the bottom surface of the aluminum soleplate is equipped with cooling trough, the bottom surface of the aluminum soleplate and So that cooling trough forms sealing cooling duct, the Aluminum cover is equipped with the water inlet with cooling duct for connection between Aluminum cover And water outlet, the transformer are mounted on Aluminum cover and are connected by cable with LED circuit board.

The LED circuit board is locked in the upper surface of aluminum soleplate by screw, applies between the LED circuit board, aluminum soleplate There is heat-conducting medium.

The middle part of both the aluminum soleplate, Aluminum cover is equipped at least one through-hole, and the transformer is by passing through through-hole Cable is connected with LED circuit board.

By screw connection between the bottom surface and Aluminum cover of the aluminum soleplate, and between the bottom surface and Aluminum cover of aluminum soleplate Glass viscose binder is coated on contact surface to form the cooling duct of sealing.

It is equipped at least one water conservancy diversion rib towards the side of Aluminum cover on the aluminum soleplate, the water conservancy diversion rib is by cooling water Slot is separated to form curved gallery.

The aluminum soleplate is made of die casting aluminium.

Compared to the prior art, the utility model has an advantage that

1, the utility model replaces the fluorescent tube with reflector using LED circuit board, is increased significantly using time lifetime, is not required to Often to replace fluorescent tube.

2, the utility model is cooling instead of internally-arranged type exhausting using the water-cooling heat radiating device of the luminous printing down work of LED circuit board System can distribute in time the heat of fluorescent tube, guarantee that operating temperature between 20~25 DEG C, is stablized, good airproof performance, reaches best Printing down effect；

3, the intensity of light source is also to influence the factor of time for exposure, and the intensity of light source refers to that light source acts on energy on light-sensitive surface Size, its at a distance from light source used, light source and halftone (lamp away from) is related, if lamp is away from changing, it is necessary to recalculate most The good time for exposure.Time for exposure and lamp are away from quadratic relationship, empirical evidence, if lamp, away from increasing by 1 times, time for exposure if needs to increase Add 3 times；, whereas if reducing 1 times of lamp away from the time for exposure should be kept to original a quarter, the LED electricity that the utility model is equipped with Road plate can be more closely close to halftone, therefore the time for exposure reduces the time for exposure at multiple than traditional printer, when saving Between, greatly improve production efficiency.

Detailed description of the invention

Fig. 1 is the dimensional decomposition structure diagram of the utility model embodiment.

Fig. 2 is the cooperation schematic cross-sectional view of the utility model embodiment aluminum soleplate, Aluminum cover.

Fig. 3 is the cooling water channel schematic diagram for sealing cooling duct.

Marginal data: 1, LED circuit board；2, aluminum soleplate；21, cooling trough；22, through-hole；23, water conservancy diversion rib；3, aluminium lid Plate；31, water inlet；32, water outlet；4, transformer.

Specific embodiment

As depicted in figs. 1 and 2, the present embodiment includes LED circuit board 1, aluminum soleplate for the printing down light emitting device of printer 2, Aluminum cover 3 and transformer 4, LED circuit board 1 are mounted on the surface of aluminum soleplate 2, and the bottom surface of aluminum soleplate 2 is equipped with cooling trough 21, so that cooling trough 21 forms sealing cooling duct, Aluminum cover 3 is equipped with for connection between the bottom surface and Aluminum cover 3 of aluminum soleplate 2 With the water inlet 31 and water outlet 32 of cooling duct, transformer 4 is mounted on Aluminum cover 3 and by cable and 1 phase of LED circuit board Even.In the present embodiment, water inlet 31 and water outlet 32 are using itself being threadedly secured on Aluminum cover 3.In the present embodiment, aluminum soleplate 2, the surface of Aluminum cover 3 is coated with UV insulating cement (UV gloss oil), can to ensure the insulation performance of aluminum soleplate 2, Aluminum cover 3 Further prevent LED circuit board 1 and transformer 4 that the danger of short circuit occurs.

In the present embodiment, LED circuit board 1 is locked in the upper surface of aluminum soleplate 2, LED circuit board 1, aluminum soleplate 2 by screw Between be coated with heat-conducting medium (such as silicone grease etc.), in order to the heat dissipation to LED circuit board 1.

As shown in Figures 2 and 3, the middle part of both aluminum soleplate 2, Aluminum cover 3 is equipped at least one through-hole 22, and transformer 4 is logical The cable crossed across through-hole 22 is connected with LED circuit board 1, so that cable is shorter, more compact structure.

In the present embodiment, pass through screw connection, and the bottom surface of aluminum soleplate 2 and aluminium between the bottom surface and Aluminum cover 3 of aluminum soleplate 2 Glass viscose binder is coated on contact surface between cover board 3 to form the cooling duct of sealing.

As shown in figure 3, being equipped at least one water conservancy diversion rib 23, water conservancy diversion rib 23 towards the side of Aluminum cover 3 on aluminum soleplate 2 Cooling trough 21 is separated to form curved gallery, it is ensured that sealing cooling duct length is longer, and heat dissipation performance is more preferable.

In the present embodiment, aluminum soleplate 2 is made of die casting aluminium.

As shown in figure 3, working principle of the present embodiment for the printing down light emitting device of printer is as follows: in use state Under, transformer 4 is powered to LED circuit board 1, while cooling water is cold from water inlet 31 into sealing between aluminum soleplate 2 and Aluminum cover 3 But it in channel, takes away LED circuit board 1 and is conducted through the heat come, successfully control the operating temperature of LED circuit board 1 at 20~25 DEG C Between, so that the LED of LED circuit board 1 is obtained the more long life, shorten the printing down exposure time, save and often change fluorescent tube cost, And the hot water that water outlet 32 comes out is recycled after external cooling system is cooling and reuses.At the same time, aluminum soleplate 2 and aluminium Cover board 3 can also radiate to transformer 4, to ensure the environment temperature of LED circuit board 1.The present embodiment is for printer Printing down light emitting device has an advantage that the light source of 1, printer guarantees work using hydrologic cycle cooling system without fan coolling Make temperature between 20~25 DEG C, stablizes, good airproof performance；2, gather New LED circuit board illuminator, it has stronger ultraviolet light Spectrum, spectrum have the advantages that cleaning, safe and stable, light efficiency utilization rate is high, the spectrum with PS editions between 350~360um Sensitivity matches, and compared with conventional light source metal halid lamp, can prevent accelerated ageing, not only can be shortened time for exposure, Er Qieneng Plate resolving power is improved, site variation is reduced；3, the time for exposure of printing down is related to the depth of printing plate, working efficiency, and this reality The LED circuit board 1 of example is applied with respect to can more closely abut halftone edge for conventional light source, the time for exposure is can be shortened, reaches To the advantages of printing down is rapidly completed.

The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.

Claims (6)

1. a kind of printing down light emitting device for printer, it is characterised in that: including LED circuit board (1), aluminum soleplate (2), aluminium lid Plate (3) and transformer (4), the LED circuit board (1) are mounted on the surface of aluminum soleplate (2), on the bottom surface of the aluminum soleplate (2) Equipped with cooling trough (21), connection between the bottom surface and Aluminum cover (3) of the aluminum soleplate (2) is so that cooling trough (21) formation is close Cooling duct is sealed, the Aluminum cover (3) is equipped with water inlet (31) and water outlet (32) with cooling duct, the transformer (4) it is mounted on Aluminum cover (3) and is connected by cable with LED circuit board (1).

2. the printing down light emitting device according to claim 1 for printer, it is characterised in that: the LED circuit board (1) The upper surface of aluminum soleplate (2) is locked in by screw, the LED circuit board (1), aluminum soleplate are coated with heat-conducting medium between (2).

3. the printing down light emitting device according to claim 1 for printer, it is characterised in that: the aluminum soleplate (2), aluminium The middle part of both cover boards (3) is equipped at least one through-hole (22), the transformer (4) by pass through the cable of through-hole (22) with LED circuit board (1) is connected.

4. the printing down light emitting device according to claim 1 for printer, it is characterised in that: the aluminum soleplate (2) By screw connection between bottom surface and Aluminum cover (3), and applied on the contact surface between the bottom surface of aluminum soleplate (2) and Aluminum cover (3) Glass viscose binder is covered with to form the cooling duct of sealing.

5. the printing down light emitting device according to claim 1 for printer, it is characterised in that: on the aluminum soleplate (2) It is equipped at least one water conservancy diversion rib (23) towards the side of Aluminum cover (3), the water conservancy diversion rib (23) divides cooling trough (21) Every the curved gallery of formation.

6. the printing down light emitting device according to claim 1 for printer, it is characterised in that: the aluminum soleplate (2) is adopted It is made of die casting aluminium.