CN203561162U - Circuit board drying device adopting constant temperature starting - Google Patents
Circuit board drying device adopting constant temperature starting Download PDFInfo
- Publication number
- CN203561162U CN203561162U CN201320655360.6U CN201320655360U CN203561162U CN 203561162 U CN203561162 U CN 203561162U CN 201320655360 U CN201320655360 U CN 201320655360U CN 203561162 U CN203561162 U CN 203561162U
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- helical gear
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- 238000001035 drying Methods 0.000 title claims abstract description 39
- 230000005540 biological transmission Effects 0.000 claims abstract description 53
- 238000010438 heat treatment Methods 0.000 claims description 15
- 239000011521 glass Substances 0.000 claims description 4
- 238000010981 drying operation Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 208000003351 Melanosis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
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Abstract
The utility model provides a circuit board drying device adopting constant temperature starting. The circuit board drying device comprises a supporting platform, a drying box, an electric cabinet, a transmission mechanism used for bearing a circuit board, a drive motor, a hot air source, a hot air duct, an air return duct and at least one air knife, wherein both the transmission mechanism and the air knife are mounted in the drying box; a transmission chain is arranged between the drive motor and the transmission mechanism, and the drive motor is connected with the transmission mechanism through the transmission chain; and a temperature sensor is arranged in the drying box, and a temperature relay KM, an intermediate relay KA and a contactor KM2 are arranged in the electric cabinet. When the temperature sensor senses that the temperature of the drying box is up to a preset drying temperature, the temperature relay KM is closed, then, the intermediate relay KA is automatically locked and closed, the contactor KM2 is closed, and the drive motor is started. Accordingly, the drying device can perform drying operation only when the preset temperature for drying is up to, the drying quality of the circuit board is effectively guaranteed, and the rejection rate is reduced.
Description
Technical field
The utility model relates to drying unit technical field, refers in particular to the wiring board drying unit that a kind of constant temperature starts.
Background technology
In printed circuit board manufacturing process, relate to a lot of wet method manufacture crafts, as circuit etching, rough surface are processed, palm fibre/melanism etc., all need in time plate to be carried out to drying and processing carrying out after these are processed.Therefore, this type of making apparatus all disposes drying section, and the effect of drying section is to dry plate face, prevents the oxidation of plate face.In prior art, use the drying plant of hot-air seasoning when startup is started working, the initial temperature of hot blast is generally 30 ℃ of left and right, but in this temperature just for drying wiring board, the non-constant of its drying effect maybe cannot be dried, cause wiring board of poor quality, percent defective is high.
Utility model content
The utility model provides a kind of wiring board drying unit of constant temperature startup for the problem of prior art, the temperature in drying unit reaches default best bake out temperature value, could dry operation by starter motor transmission lines plate.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:
The wiring board drying unit that a kind of constant temperature starts, include support platform, dry casing, control electronic box, for carrying the transmission mechanism of wiring board, drive motors and hot air source, warm-air pipe, backwind tube and at least one air knife, described control electronic box and oven dry casing are all arranged at the top of support platform, described drive motors and hot air source are all arranged at the below of support platform, described transmission mechanism and air knife are all installed on the inside of drying casing, between described drive motors and transmission mechanism, be provided with driving chain, described drive motors is connected with transmission mechanism by driving chain, described hot air source comprises heating cabinet and pressure fan, described heating cabinet is communicated with the air outlet of pressure fan, described warm-air pipe is communicated with heating cabinet and air knife, described backwind tube is communicated with the air inlet of pressure fan and dries casing, described drive motors, heating cabinet and pressure fan are electrically connected to control electronic box respectively, the control circuit of described control electronic box inside is provided with temperature relay KM, first and controls branch road and the second control branch road, in described oven dry casing, be provided with temperature sensor, described temperature sensor is electrically connected to temperature relay KM, described first controls branch road includes normal open switch KM1, the auxiliary reclay KA of temperature relay KM and the first normal open switch KA1 of auxiliary reclay KA, described normal open switch KM1 connects with auxiliary reclay KA with after the first normal open switch KA1 parallel connection, and the first control branch road and temperature relay KM are connected in parallel, described second controls the second normal open switch KA2 and the contactor KM2 that branch road includes auxiliary reclay KA, and described the second normal open switch KA2 connects with contactor KM2, and the second control branch road and first is controlled branch circuit parallel connection and is connected, the contact-making switch KM3 of described contactor KM2 is electrically connected to drive motors.
Wherein, described transmission mechanism includes and is live-rollers group A, live-rollers group B and two power transmission shafts that upper and lower shape is arranged, between described live-rollers group A, live-rollers group B and power transmission shaft, be respectively arranged with transmission component, described two power transmission shafts rotate live-rollers group A and live-rollers group B by transmission component, between described live-rollers group A and live-rollers group B, are formed with gap.
Wherein, described power transmission shaft is horizontally set at dries in casing, and described live-rollers group A and live-rollers group B all longitudinally arrange, and described transmission component is for comprising two helical gear gear trains, and described power transmission shaft is by gear set drive live-rollers group A and live-rollers group B.
Further, described gear train comprises driving helical gear and driven helical gear, described live-rollers group A forms by the consistent live-rollers of a plurality of structures with live-rollers group B, described driving helical gear fixed cover is located on power transmission shaft, described driven helical gear fixed cover is located at one end of live-rollers, drives helical gear and driven helical gear to intermesh.
Further, on described control circuit, be also provided with battery main switch button S.
Wherein, described oven dry casing is transparent glass casing.
The beneficial effects of the utility model:
the utility model has increased function of temperature control, when temperature sensor senses reaches predetermined bake out temperature (if specified bake out temperature is 90 ℃) to drying temperature in casing, the normal open switch KM1 of temperature relay KM is just closed, then the first normal open switch KA1 of auxiliary reclay KA and the second normal open switch KA2 self-locking are closed, and then the closure of the contact-making switch KM3 of contactor KM2 just can start drive motors.This makes drying unit only reach oven dry predetermined temperature just can dry operation, effectively guarantees the dries quantity of wiring board, the rate of reducing the number of rejects and seconds.
Accompanying drawing explanation
Fig. 1 is the structural representation of the wiring board drying unit of a kind of constant temperature startup of the utility model.
Fig. 2 is the circuit diagram of the control electronic box in the utility model.
Reference numeral in Fig. 1 to Fig. 2 comprises:
1-support platform 2-oven dry casing 3-control electronic box
4-transmission mechanism, 41-live-rollers group A, 42-live-rollers group B
43-power transmission shaft, 44-transmission component, 5-drive motors
6-hot air source, 61-heating cabinet, 62-pressure fan
7-warm-air pipe, 8-backwind tube, 9-air knife
10-temperature sensor, 11-driving chain.
The specific embodiment
For the ease of those skilled in the art's understanding, below in conjunction with embodiment and accompanying drawing, the utility model is further described, the content that embodiment is mentioned is not to restriction of the present utility model.Referring to Fig. 1 to Fig. 2, below in conjunction with accompanying drawing, the utility model is described in detail.
The wiring board drying unit that a kind of constant temperature provided by the utility model starts, include support platform 1, dry casing 2, control electronic box 3, for carrying the transmission mechanism 4 of wiring board, drive motors 5 and hot air source 6, warm-air pipe 7, backwind tube 8 and at least one air knife 9, described control electronic box 3 and oven dry casing 2 are all arranged at the top of support platform 1, described drive motors 5 and hot air source 6 are all arranged at the below of support platform 1, described transmission mechanism 4 and air knife 9 are all installed on the inside of drying casing 1, between described drive motors 5 and transmission mechanism 4, be provided with driving chain 11, described drive motors 5 is connected with transmission mechanism 4 by driving chain 11, described hot air source 6 comprises heating cabinet 61 and pressure fan 62, described heating cabinet 61 is communicated with the air outlet of pressure fan 62, described warm-air pipe 7 is communicated with heating cabinet 61 and air knife 9, described backwind tube 8 is communicated with the air inlet of pressure fan 62 and dries casing 2, described drive motors 5, heating cabinet 61 and pressure fan 62 are electrically connected to control electronic box 3 respectively. as shown in Figure 2, the control circuit of described control electronic box 3 inside is provided with temperature relay KM, first controls branch road and second controls branch road, in described oven dry casing 3, be also provided with temperature sensor 10, described temperature sensor 10 is electrically connected to temperature relay KM, described first controls branch road includes normal open switch KM1, the auxiliary reclay KA of temperature relay KM and the first normal open switch KA1 of auxiliary reclay KA, described normal open switch KM1 connects with auxiliary reclay KA with after the first normal open switch KA1 parallel connection, and the first control branch road and temperature relay KM are connected in parallel, described second controls the second normal open switch KA2 and the contactor KM2 that branch road includes auxiliary reclay KA, and described the second normal open switch KA2 connects with contactor KM2, and the second control branch road and first is controlled branch circuit parallel connection and is connected, the contact-making switch KM3 of described contactor KM2 is electrically connected to drive motors 5.Further, on described control circuit, be also provided with battery main switch button S.
By above-mentioned, can be known, the utility model has increased attemperating unit on the basis of original drying unit.When pressing battery main switch button S, heating cabinet 61 and pressure fan 62 putting in blast heating, temperature sensor 10 starts to respond to the real-time temperature in baking oven, only have when temperature sensor 10 senses the interior temperature of oven dry casing 3 and reach predetermined bake out temperature (if specified bake out temperature is 90 ℃), the normal open switch KM1 of temperature relay KM could be closed, then the first normal open switch KA1 of auxiliary reclay KA and the second normal open switch KA2 self-locking are closed, then the closure of the contact-making switch KM3 of contactor KM2, finally just can start drive motors 5 and carry out conveying circuit plate.This makes drying unit only reach oven dry predetermined temperature just can dry operation, has effectively guaranteed the dries quantity of wiring board, the rate of reducing the number of rejects and seconds.
In the present embodiment, described transmission mechanism 4 includes and is live-rollers group A41, live-rollers group B42 and two power transmission shafts 43 that upper and lower shape is arranged, between described live-rollers group A41, live-rollers group B42 and power transmission shaft 43, be respectively arranged with transmission component 44, described two power transmission shafts 43 rotate live-rollers group A41 and live-rollers group B42 by transmission component 44, between described live-rollers group A41 and live-rollers group B42, are formed with gap.Wherein, described power transmission shaft 43 is horizontally set at dries in casing 2, described live-rollers group A41 and live-rollers group B42 all longitudinally arrange with respect to described power transmission shaft 43, described transmission component 44 is for comprising two helical gear gear trains, and described power transmission shaft 43 is by gear set drive live-rollers group A41 and live-rollers group B42.Further, described gear train comprises driving helical gear and driven helical gear, described live-rollers group A41 forms by the consistent live-rollers of a plurality of structures with live-rollers group B42, described driving helical gear fixed cover is located on power transmission shaft 43, described driven helical gear fixed cover is located at one end of live-rollers, drives helical gear and driven helical gear to intermesh.
In the present embodiment, one end of each described live-rollers is provided with driven helical gear, driven helical gear on driven helical gear on the live-rollers of composition live-rollers group A 41 and the live-rollers of live-rollers group B 42 is heterodoxy setting, if the driven helical gear that is live-rollers group A 41 is arranged on left end, the driven helical gear of live-rollers group B 42 is arranged on right-hand member so.After drive motors 5 starts, the central shaft of drive motors 5 drives driving chain 11, by driving chain 11, drive two power transmission shafts 43 again, power transmission shaft 43 drives live-rollers group A 41 and live-rollers group B 42 by the driving helical gear on it, owing to being formed with gap between described live-rollers group A 41 and live-rollers group B 42, when drying wiring board, live-rollers group A 41 and live-rollers group B 42 clamp wiring board, and wiring board is passed through between its gap.
In the present embodiment, described oven dry casing 3 is transparent glass casing, when drying operation, facilitates staff to see through the operation conditions of glass casing observation line road plate.
Above content is only preferred embodiment of the present utility model, for those of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, this description should not be construed as restriction of the present utility model.
Claims (6)
1. the wiring board drying unit that a constant temperature starts, include support platform, dry casing, control electronic box, for carrying the transmission mechanism of wiring board, drive motors and hot air source, warm-air pipe, backwind tube and at least one air knife, described control electronic box and oven dry casing are all arranged at the top of support platform, described drive motors and hot air source are all arranged at the below of support platform, described transmission mechanism and air knife are all installed on the inside of drying casing, between described drive motors and transmission mechanism, be provided with driving chain, described drive motors is connected with transmission mechanism by driving chain, described hot air source comprises heating cabinet and pressure fan, described heating cabinet is communicated with the air outlet of pressure fan, described warm-air pipe is communicated with heating cabinet and air knife, described backwind tube is communicated with the air inlet of pressure fan and dries casing, described drive motors, heating cabinet and pressure fan are electrically connected to control electronic box respectively, it is characterized in that: the control circuit of described control electronic box inside is provided with temperature relay KM, first and controls branch road and the second control branch road, in described oven dry casing, be provided with temperature sensor, described temperature sensor is electrically connected to temperature relay KM, described first controls branch road includes normal open switch KM1, the auxiliary reclay KA of temperature relay KM and the first normal open switch KA1 of auxiliary reclay KA, described normal open switch KM1 connects with auxiliary reclay KA with after the first normal open switch KA1 parallel connection, and the first control branch road and temperature relay KM are connected in parallel, described second controls the second normal open switch KA2 and the contactor KM2 that branch road includes auxiliary reclay KA, and described the second normal open switch KA2 connects with contactor KM2, and the second control branch road and first is controlled branch circuit parallel connection and is connected, the contact-making switch KM3 of described contactor KM2 is electrically connected to drive motors.
2. the wiring board drying unit that a kind of constant temperature according to claim 1 starts, it is characterized in that: described transmission mechanism includes and is live-rollers group A, live-rollers group B and two power transmission shafts that upper and lower shape is arranged, between described live-rollers group A, live-rollers group B and power transmission shaft, be respectively arranged with transmission component, described two power transmission shafts rotate live-rollers group A and live-rollers group B by transmission component.
3. the wiring board drying unit that a kind of constant temperature according to claim 2 starts, it is characterized in that: described power transmission shaft is horizontally set at dries in casing, described live-rollers group A and live-rollers group B all longitudinally arrange, described transmission component is for comprising two helical gear gear trains, and described power transmission shaft is by gear set drive live-rollers group A and live-rollers group B.
4. the wiring board drying unit that a kind of constant temperature according to claim 3 starts, it is characterized in that: described gear train comprises driving helical gear and driven helical gear, described live-rollers group A forms by the consistent live-rollers of a plurality of structures with live-rollers group B, described driving helical gear fixed cover is located on power transmission shaft, described driven helical gear fixed cover is located at one end of live-rollers, drives helical gear and driven helical gear to intermesh.
5. the wiring board drying unit that a kind of constant temperature according to claim 1 starts, is characterized in that: on described control circuit, be also provided with battery main switch button S.
6. the wiring board drying unit that a kind of constant temperature according to claim 1 starts, is characterized in that: described oven dry casing is transparent glass casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320655360.6U CN203561162U (en) | 2013-10-23 | 2013-10-23 | Circuit board drying device adopting constant temperature starting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320655360.6U CN203561162U (en) | 2013-10-23 | 2013-10-23 | Circuit board drying device adopting constant temperature starting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203561162U true CN203561162U (en) | 2014-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320655360.6U Expired - Lifetime CN203561162U (en) | 2013-10-23 | 2013-10-23 | Circuit board drying device adopting constant temperature starting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203561162U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106527525A (en) * | 2016-12-30 | 2017-03-22 | 天津市威匡电气设备有限公司 | Temperature control circuit |
| CN106705369A (en) * | 2016-12-30 | 2017-05-24 | 天津市威匡电气设备有限公司 | Temperature control circuit of dual air conditioner draught fans |
| CN106710914A (en) * | 2016-12-22 | 2017-05-24 | 重庆淳祥电子科技有限公司 | Grill and patch device containing same |
| CN110238006A (en) * | 2019-06-29 | 2019-09-17 | 广东达诚技术股份有限公司 | Sheet material is coated with dryer hand automatic temperature-adjusting control system |
| CN112412764A (en) * | 2020-11-03 | 2021-02-26 | 中车青岛四方机车车辆股份有限公司 | Control method and circuit of auxiliary air compressor and railway vehicle |
-
2013
- 2013-10-23 CN CN201320655360.6U patent/CN203561162U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106710914A (en) * | 2016-12-22 | 2017-05-24 | 重庆淳祥电子科技有限公司 | Grill and patch device containing same |
| CN106527525A (en) * | 2016-12-30 | 2017-03-22 | 天津市威匡电气设备有限公司 | Temperature control circuit |
| CN106705369A (en) * | 2016-12-30 | 2017-05-24 | 天津市威匡电气设备有限公司 | Temperature control circuit of dual air conditioner draught fans |
| CN110238006A (en) * | 2019-06-29 | 2019-09-17 | 广东达诚技术股份有限公司 | Sheet material is coated with dryer hand automatic temperature-adjusting control system |
| CN112412764A (en) * | 2020-11-03 | 2021-02-26 | 中车青岛四方机车车辆股份有限公司 | Control method and circuit of auxiliary air compressor and railway vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140423 |