CN208341080U - A kind of curing light source based on UVLED - Google Patents

Abstract

The utility model discloses a kind of curing light sources based on UVLED, are related to ic manufacturing technology field.In the utility model: alternating current input module is connect with mutual inductance unit, and the mutual inductance unit other side is connect with rectifier bridge；Rectifier bridge is connect with cathode output end with inner ground module；Capacitor is equipped between rectifier bridge and decompression constant-current circuit；The GND pin of PT4115 circuit is connect with inner ground module；Sampling resistor is connected between VIN pin and CSN pin；The DIM pin of PT4115 circuit is connect with pwm pulse width modulation circuit；The output end of rectifier bridge is connect by sampling resistor, inductance and light emitting diode with the SW pin of PT4115 circuit.The utility model is solidified by UVLED and is solidified instead of UV, and energy consumption and the discharge amount of CO2 are reduced；Extend light source service life, replacing light source frequency is greatly reduced, and equipment consumption is reduced therewith；And UVLED radiation energy is controllable, and fever is few, small for the printing heat affecting of the poor heat resistances such as plastic film or thermo-responsive printable fabric.

Description

A kind of curing light source based on UVLED

Technical field

The utility model belongs to ic manufacturing technology field, more particularly to a kind of curing light source based on UVLED.

Background technique

Well known UVLED solidification is the cured one kind of UV, is to use UVLED light source by UV ink, UV glue, UV coating etc. Solidification.Ultraviolet light (UV light) is successfully generalized to business application before more than 30 years.Each adhesive manufacturer is solid for UV light Change characteristic, develop for the series UV product such as being bonded, sealing, print, and be widely used in communication, electronics, optics, printing etc. Various fields.These products can be cured or hardened (polymerization) under UV light (certain wavelength and certain luminous intensity) irradiation, and with Traditional product-UV photocuring more accelerates efficient, energy conservation and environmental protection.Equipment also experienced constantly research and development and perfect process.With mercury lamp Radiation modality is that the production technology of mainstream has been used for a long time.But since equipment price is expensive, maintenance cost is high, UV illumination The defects of strength retrogression is fast, and the surface temperature rise of illuminated element is high, volume is big, consumptive material is expensive, mercury pollution, industry has been devoted to change Into, but because the limitation of original hardware is difficult to break through always.While UVLED is wide applied to photocuring market prospects, to overcome Difficult problem it is also very more.The progress that LED illumination moves towards high industrial from laboratory is different, the efficiency of ultraviolet LED Equal technical details still have very big room for promotion.As the technical problem encountered in LED illumination industrialization process, efficiency is quantization One of most important index of industry development progress.Either conventional light source or the LED light source, (Deep from blue light to deep ultraviolet light UV), it is gradually shortened with wavelength from 365nm to 280nm, preparation difficulty is all improving.Other than technical threshold is high, UVLED is answered In business model is also being explored, when market can receive even more unknown number to new light sources application on a large scale.

Therefore the utility model is set about in terms of UVLED solidifies uv-exposure problem, and that releases complete set is directed to high pressure The solution of mercury lamp uv-exposure, meet industry towards economy, society and development in science and technology etc. effective demand, have Great meaning.

Utility model content

The purpose of this utility model is to provide a kind of curing light sources based on UVLED, are solidified by UVLED instead of UV Solidification, greatly reduces energy consumption and the discharge amount of CO2；Extend light source service life, replacing light source frequency is greatly reduced, device Material consumption is reduced therewith；And UVLED radiation energy is controllable, and fever is few, for the poor heat resistances such as plastic film or thermo-responsive printing The printing heat affecting of material is small.

In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

The utility model is a kind of curing light source based on UVLED, including drive control circuit and curing light source circuit, institute Drive control circuit is stated to the control signal control of curing light source circuit transmission；The drive control circuit includes alternating current input mould Block, rectifier bridge, light emitting diode and decompression constant-current circuit；

Wherein, the alternating current input module is connect with mutual inductance unit, and the mutual inductance unit other side is connect with rectifier bridge； The cathode output end of the rectifier bridge is connect with an inner ground module；Electricity is equipped between the rectifier bridge and decompression constant-current circuit Hold；

The decompression constant-current circuit is PT4115 circuit, and the GND pin and inner ground module of the PT4115 circuit connect It connects；A sampling resistor is equipped between the VIN pin and CSN pin；The DIM pin and pwm pulse of the PT4115 circuit are wide Spend modulation circuit connection；It is dimmed by PWM, and is made in the case where not influence system by pwm pulse width modulated It dims more flexible；

The output end of the rectifier bridge is connected by the SW pin of sampling resistor, inductance and light emitting diode and PT4115 circuit It connects.

Further, a rectifier diode, the capacitor are connected between the SW pin and capacitor of the PT4115 circuit One end is connect with inner ground module, and the capacitor other end accesses the VIN pin of PT4115 circuit by sampling resistor, is passed through Shunt capacitance is that the high-frequency noise in input signal is filtered out, and improves the anti-jamming effectiveness of circuit.

Further, the fuse for having a 1A is added in the drive control circuit, for preventing overcurrent, protects UVLED It is not burned out.

Further, the DIM pin of the PT4115 accesses thermistor, avoids temperature is excessively high from leading to circuit burnout.

Further, the drive control circuit is radiated by cooling fin, and the cooling fin is electrothermal resistance piece or aluminium Alloy sheet improves heat dissipation effect, lengthens working hours；The UVLED light source of the drive control circuit application is scanning type exposure Mode effectively reduces the dimensioned area of UVLED light source by the Exposure mode of scan-type, and then solves the heat dissipation of UVLED Problem.

The utility model has the following beneficial effects:

1, the utility model is solidified by UVLED and is solidified instead of UV, it is only necessary to which its 1/4 power consumption greatly reduces The discharge amount of energy consumption and CO2；Extend light source service life, replacing light source frequency is greatly reduced, and equipment consumption subtracts therewith It is few；And UVLED radiation energy is controllable, and fever is few, for the printing heat of the poor heat resistances such as plastic film or thermo-responsive printable fabric It influences small.

2, the utility model is solidified by that, as curing light source, can accomplish that moment opens or closes by UVLED without UV Necessary preheating and temperature fall time, operating efficiency are improved；And the generation of UVLED mode ozone free, improves worker Working environment, no longer need to that installation captures and cremation facilities eliminate the harm of ozone.

Certainly, any product for implementing the utility model does not necessarily require achieving all the advantages described above at the same time.

Detailed description of the invention

In order to illustrate more clearly of the technical solution of the utility model embodiment, make required for being described below to embodiment Attached drawing is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention, For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings Other attached drawings.

Fig. 1 is a kind of driving circuit structure schematic diagram of curing light source based on UVLED.

Fig. 2 is a kind of curing light source circuit diagram based on UVLED.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts All other embodiment obtained, fall within the protection scope of the utility model.

Refering to Figure 1, the utility model be a kind of curing light source based on UVLED, including drive control circuit and Curing light source circuit, drive control circuit are controlled to curing light source circuit transmission control signal；Drive control circuit includes exchange Electric input module AC, rectifier bridge, light emitting diode and decompression constant-current circuit；

Wherein, alternating current input module AC is connect with mutual inductance unit, and the mutual inductance unit other side is connect with rectifier bridge；Rectifier bridge Cathode output end connect with an inner ground module；Capacitor C is equipped between rectifier bridge and decompression constant-current circuit；

Decompression constant-current circuit is PT4115 circuit, and the GND pin of PT4115 circuit is connect with inner ground module；VIN draws A sampling resistor Rs is equipped between foot and CSN pin；The DIM pin of PT4115 circuit is connect with pwm pulse width modulation circuit； Dimmed by PWM, and by pwm pulse width modulated make to dim in the case where not influence system it is more flexible；

The output end of rectifier bridge is connected by the SW pin of sampling resistor Rs, inductance L and light emitting diode and PT4115 circuit It connects.

Further, a rectifier diode Vs, the one end capacitor C are connected between the SW pin and capacitor C of PT4115 circuit It is connect with inner ground module, the capacitor C other end accesses the VIN pin of PT4115 circuit by sampling resistor Rs, passes through bypass Capacitor C is that the high-frequency noise in input signal is filtered out, and improves the anti-jamming effectiveness of circuit.

Further, being added in drive control circuit has the fuse of a 1A, for preventing overcurrent, protect UVLED not by It burns.

Further, the DIM pin of PT4115 accesses thermistor, avoids temperature is excessively high from leading to circuit burnout.

Further, drive control circuit is radiated by cooling fin, and cooling fin is electrothermal resistance piece or aluminum alloy sheet, is mentioned High heat dissipation effect, lengthens working hours；UVLED light source is Exposure mode of the scanning type exposure mode by scan-type, is effectively subtracted Lack the dimensioned area of UVLED light source, and then solves the heat dissipation problem of UVLED.

Specific embodiment two:

As shown in Fig. 2, the curing light source circuit of the UVLED of the utility model, driving circuit is provided to curing light source circuit Dim signal；Curing light source circuit includes supply voltage source, inductance, diode, LED drive chip and light emitting diode；Power supply Voltage source is connect with LED drive chip；The output end and ultraviolet radiator UV and LED light of LED drive chip are connected in series；Wherein, LED light is parallel with a build-out resistor R101；

The LX pin and VIN pin of LED drive chip have been directly connected to an inductance L；The GND pin of LED drive chip with The connection of inner ground module；A feedback resistance is equipped between the FB pin and GND pin of LED drive chip；LED drive chip OVP pin is connect with diode carries out overvoltage protection；The EN pin of LED drive chip accesses dim signal.

Wherein, supply voltage source and LED drive chip are directly provided with a ground capacity；LED drive chip and ultraviolet radiator A ground capacity is equipped between UV.

Specific implementation three:

As shown in Figs. 1-2, some components in attached drawing and effect are as follows

In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one of the utility model In embodiment or example.In the present specification, schematic expression of the above terms be not necessarily referring to identical embodiment or Example.Moreover, particular features, structures, materials, or characteristics described can be in any one or more embodiment or examples In can be combined in any suitable manner.

The preferred embodiment in the utility model disclosed above is only intended to help to illustrate the utility model.Preferred embodiment is simultaneously There is no the details that detailed descriptionthe is all, also not limiting the utility model is only the specific embodiment.Obviously, according to this theory The content of bright book can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to preferably The principles of the present invention and practical application are explained, so that skilled artisan be enable to better understand and utilize this Utility model.The utility model is limited only by the claims and their full scope and equivalents.

Claims (5)

1. a kind of curing light source based on UVLED, including drive control circuit and curing light source circuit, it is characterised in that: driving Control circuit is controlled to curing light source circuit transmission control signal；The drive control circuit includes alternating current input module, whole Flow bridge, light emitting diode and decompression constant-current circuit；

Wherein, the alternating current input module is connect with mutual inductance unit, and the mutual inductance unit other side is connect with rectifier bridge；It is described The cathode output end of rectifier bridge is connect with an inner ground module；Capacitor is equipped between the rectifier bridge and decompression constant-current circuit；

The decompression constant-current circuit is PT4115 circuit, and the GND pin of the PT4115 circuit is connect with inner ground module；Institute The DIM pin for stating PT4115 circuit is connect with pwm pulse width modulation circuit；

The output end of the rectifier bridge is connect by sampling resistor, inductance and light emitting diode with the SW pin of PT4115 circuit.

2. a kind of curing light source based on UVLED according to claim 1, which is characterized in that the PT4115 circuit A rectifier diode is connected between SW pin and capacitor, described capacitor one end is connect with inner ground module, and the capacitor is another One end accesses the VIN pin of PT4115 circuit by sampling resistor.

3. a kind of curing light source based on UVLED according to claim 1, which is characterized in that the drive control circuit It is middle that the fuse for having a 1A is added.

4. a kind of curing light source based on UVLED according to claim 1, which is characterized in that the DIM of the PT4115 draws Foot accesses thermistor.

5. a kind of curing light source based on UVLED according to claim 1, which is characterized in that the drive control circuit It is radiated by cooling fin, the cooling fin is electrothermal resistance piece or aluminum alloy sheet.