CN210579527U

CN210579527U - PCB hinders and welds seal automation line

Info

Publication number: CN210579527U
Application number: CN201920830983.XU
Authority: CN
Inventors: 钟华爱
Original assignee: Jiangmen Benlida Printed Circuit Co ltd
Current assignee: Jiangmen Benlida Printed Circuit Co ltd
Priority date: 2019-03-06
Filing date: 2019-05-31
Publication date: 2020-05-19
Anticipated expiration: 2029-05-31

Abstract

The utility model discloses a PCB solder mask printing automatic production line, which comprises an automatic plate placing machine for automatically taking and placing plates, a full-automatic silk-screen printing production line, a first conveyor belt, a tunnel oven, a second conveyor belt, an exposure production line and an automatic plate collecting machine for collecting PCB plates; the automatic plate placing machine is in butt joint with an inlet of a full-automatic silk-screen production line, an outlet of the full-automatic silk-screen production line is in butt joint with an inlet of a tunnel oven through a first conveyor belt, an outlet of the tunnel oven is in butt joint with an inlet of an exposure production line through a second conveyor belt, and an outlet of the exposure production line is in butt joint with an automatic plate receiving machine. The stamp-pad ink of this production line full automation processing PCB board, toast and expose, saved artifical unloading, links such as transport, avoided artifical contact PCB board in the production process, reduced personnel's intensity of labour, avoided the output of the defective products that artifical error leads to, improved the product quality, guaranteed the uniformity of product.

Description

PCB hinders and welds seal automation line

Technical Field

The utility model relates to a PCB board production technical field especially relates to a PCB board hinders and welds seal automation line.

Background

The PCB needs to be subjected to ink printing, baking and exposure processes in the production process of solder resist printing, each process needs to be set up at a post, personnel are arranged for operation, and manual work is needed for carrying the PCB between the posts. The operation procedures of the links of feeding, discharging, carrying and the like of the PCB are complicated, so that the labor intensity of personnel is high, and the production efficiency is low due to manual operation; meanwhile, manual operation and carrying easily cause PCB scraping due to manual errors, so that defective products are produced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of current PCB board resistance welding seal production line, the utility model provides a PCB board resistance welding seal automation line has avoided the manual contact PCB board in the production process, and full automated production has improved production efficiency, has reduced the output of defective products, has guaranteed the uniformity of product.

The utility model provides a technical scheme that its problem adopted is:

a PCB solder resist printing automatic production line comprises an automatic board placing machine for automatically taking and placing boards, a full-automatic silk-screen printing production line, a first conveyor belt, a tunnel oven, a second conveyor belt, an exposure production line and an automatic board collecting machine for collecting PCB boards; the automatic plate placing machine is in butt joint with an inlet of a full-automatic silk-screen production line, an outlet of the full-automatic silk-screen production line is in butt joint with an inlet of a tunnel oven through a first conveyor belt, an outlet of the tunnel oven is in butt joint with an inlet of an exposure production line through a second conveyor belt, and an outlet of the exposure production line is in butt joint with an automatic plate receiving machine.

Preferably, the full-automatic silk screen printing production line includes in proper order the first silk screen printing machine that is used for carrying on the consent stamp-pad ink, the second silk screen printing machine that is used for PCB board A face stamp-pad ink, the third silk screen printing machine that is used for PCB board B face stamp-pad ink, all adopt tilting mechanism to connect between first silk screen printing machine and the second silk screen printing machine, between second silk screen printing machine and the third silk screen printing machine. Three equipment are communicated through the turnover mechanism, full automation of a silk screen production line is achieved, manual carrying is not needed, and production efficiency is improved.

Preferably, the tunnel oven comprises a standing zone and a drying zone in sequence. The standing area is used for standing the PCB, the surface layer of the printing ink on the PCB subjected to standing treatment becomes smooth through micro-flow, and volatile matters in the printing ink layer can be volatilized in a large amount and uniformly, so that the problem that the printing ink layer is broken due to insufficient volatilization of the volatile matters, or is not broken due to the fact that the volatile matters are close to the surface layer to bulge to form bubbles or the PCB is poor due to the fact that the volatile matters are gathered into bubbles in the ink layer is avoided in the subsequent drying procedure.

Preferably, the drying area is divided into a plurality of heating bins, and the temperature of each heating bin is increased and then reduced along the conveying direction. The gradual temperature rise and temperature reduction of the drying area can prevent the paint film structure in the ink layer on the PCB from generating strain due to too fast temperature change.

Preferably, the second conveyor belt is provided with a cooling device for cooling the PCB board. The cooling device is used for accelerating the cooling speed of the PCB.

Preferably, a solar panel turnover machine used for cooling the PCB is arranged between the second conveyor belt and the inlet of the exposure production line. The solar panel turnover machine is used for secondary cooling of the PCB and has the functions of transferring and temporary storage.

Preferably, the initial part of the exposure production line is also sequentially provided with a temporary storage machine for temporarily storing the PCB, a centering machine for pre-positioning the PCB, and a cleaning machine for removing dust and dirt on the surface of the PCB. The temporary storage machine is used for temporarily storing the PCB waiting for exposure, the centering machine realizes pre-alignment of the PCB, and the cleaning mechanism is used for dust removal of the PCB and prepares for the next exposure process.

Preferably, the exposure production line comprises two single-side exposure machines, and a turnover mechanism is arranged between the two single-side exposure machines; the single-side exposure machine comprises an alignment drying rack, an exposure negative film, an LED lamp source and a conveying device for grabbing and conveying the PCB. The exposure production line is communicated with the two single-side exposure machines through the turnover mechanism, and the full automation of the exposure production line is realized.

The utility model has the advantages that: the embodiment of the utility model provides a PCB hinders and welds automatic production line of seal, including the automatic trigger of putting, full-automatic silk screen printing production line, first conveyer belt, tunnel oven, second conveyer belt, exposure production line, the automatic trigger of receiving that is used for packing up the PCB board that is used for getting the board automatically and putting the board; the automatic plate placing machine is in butt joint with an inlet of a full-automatic silk-screen production line, an outlet of the full-automatic silk-screen production line is in butt joint with an inlet of a tunnel oven through a first conveyor belt, an outlet of the tunnel oven is in butt joint with an inlet of an exposure production line through a second conveyor belt, and an outlet of the exposure production line is in butt joint with an automatic plate receiving machine. The stamp-pad ink of this production line full automation processing PCB board, toast and expose, saved links such as artifical unloading, transport, avoided artifical contact PCB board in the production process, reduced personnel's intensity of labour, avoided the output of the defective products that artifical error leads to, improved the product percent of pass, guaranteed the uniformity of product.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the overall structure of a fully automatic screen printing production line in an embodiment of the present invention;

fig. 3 is a schematic view of the whole structure of the tunnel oven in the embodiment of the present invention;

FIG. 4 is a schematic view of the overall structure of an exposure production line according to an embodiment of the present invention;

fig. 5 is a schematic view of the overall structure of a solar panel turnover machine according to an embodiment of the present invention;

in the figure, 100-automatic plate placing machine, 200-full-automatic screen printing production line, 300-first conveyor belt, 400-tunnel oven, 500-second conveyor belt, 600-exposure production line, 700-automatic plate collecting machine, 201-first screen printing machine, 202-second screen printing machine, 203-third screen printing machine, 401-standing zone, 402-drying zone, 601-single-side exposure machine, 801-solar plate turnover machine, 802-temporary storage machine, 803-centering machine, 804-cleaning machine and 900-turnover machine.

Detailed Description

Referring to fig. 1 to 5, an automatic production line for solder resist printing of PCB boards disclosed in an embodiment of the present invention includes an automatic board placing machine 100 for automatically taking and placing boards, a full-automatic screen printing production line 200, a first conveyor belt 300, a tunnel oven 400, a second conveyor belt 500, an exposure production line 600, and an automatic board collecting machine 700 for collecting PCB boards; the automatic trigger placing machine 100 is in butt joint with an inlet of a full-automatic silk-screen production line 200, an outlet of the full-automatic silk-screen production line 200 is in butt joint with an inlet of a tunnel oven 400 through a first conveyor belt 300, an outlet of the tunnel oven 400 is in butt joint with an inlet of an exposure production line 600 through a second conveyor belt 500, and an outlet of the exposure production line 600 is in butt joint with an automatic trigger receiving machine 700. This production line full automation handles stamp-pad ink, toasts and the exposure of PCB board, has saved links such as artifical unloading, transport, has avoided artifical contact PCB board in the production process, has reduced personnel's intensity of labour, has avoided the output of the defective products that artifical error leads to.

Preferably, the full-automatic silk-screen production line 200 sequentially comprises a first silk-screen printing machine 201 for plugging the hole with the printing oil, a second silk-screen printing machine 202 for printing the oil on the a surface of the PCB, and a third silk-screen printing machine 203 for printing the oil on the B surface of the PCB, wherein the first silk-screen printing machine 201 is connected with the second silk-screen printing machine 202, and the second silk-screen printing machine 202 is connected with the third silk-screen printing machine 203 through a turnover mechanism 900. The principle of the silk screen printing oil is that the printing ink is transferred to a printing stock through meshes of an image-text part by extrusion of a scraper to form an image-text same as an original manuscript. Generally, a screen printing process firstly performs hole plugging, and then performs surface printing on the front surface and the back surface of the PCB; in this embodiment, a screen printer with only one screen printing screen is adopted, so that the plugging and the front-back printing oil are respectively completed on different screen printers, that is, the first screen printer 201, the second screen printer 202 and the third screen printer 203, which are arranged in sequence and connected through the turnover mechanism 900, thereby realizing the automation of the screen printing process. Preferably, a full-automatic screen printing machine with a plurality of screen printing screens is also available in the market, and hole plugging and front and back face printing oil of a PCB can be completed on one machine.

Most preferably, the tunnel oven 400 comprises a standing zone 401 and a drying zone 402 in sequence. The drying zone 402 is divided into a plurality of heating compartments, each of which is raised and then lowered in temperature in the conveying direction. Necessity of setting the rest zone 401: the PCB after the silk-screen process is covered with the printing ink, the surface layer of the printing ink becomes smooth after micro-flowing after standing for a certain time, volatile matters in the inner layer of the printing ink layer are volatilized in a large amount and uniformly, if the PCB directly enters the drying area 402 for drying without standing, the printing ink on the surface layer can be dried quickly, the internal volatile matters or the internal volatile matters swell to form vacuum on the surface layer, or the internal volatile matters are close to the surface layer and swell to form bubbles without swelling, or the internal volatile matters are hidden and aggregated to form bubbles, and finally the defects of the PCB are caused.

Although most of volatile matters in the whole paint after standing can be volatilized, if the paint suddenly enters a high-temperature environment, the surface layer of oil gas can still be rapidly dried, volatilization of internal volatile matters is retarded, and the paint film is harmful and the drying efficiency is influenced; if directly get into low temperature environment by high temperature environment, can cause the heat waste, the temperature rapid change also makes the paint film structure produce the strain easily, so necessarily sets up drying zone 402, and the temperature setting of each heated warehouses of drying zone 402 is different, according to the order of flowing through of production line, sets up each heated warehouses temperature of drying zone 402 as ascending earlier in proper order and then reduces for the PCB board is heated gradually earlier then is cooled off gradually in drying zone 402.

In order to more rapidly cool the PCB panel having passed through the drying zone 402 to room temperature, it is preferable that a cooling device for cooling the PCB panel is provided on the second conveyor 500. The cooling device may be a fan set installed at both sides of the second belt 500, and the air blown by the fan set is directed toward the surface of the PCB plate, so as to accelerate the air flow velocity on the surface of the PCB plate and increase the cooling speed of the PCB plate. The cooling device may also be a fan set installed at the upper and lower sides of the second conveyor 500, and the second conveyor 500 is a roller type conveyor, and a gap through which the air of the fan set blows is provided between the rollers, and the fan set blows air toward the PCB to accelerate the cooling thereof.

In order to further ensure the cooling effect, a solar panel turnover 801 for cooling the PCB panel is disposed between the second conveyor 500 and the entrance of the exposure line 600. The solar panel turnover machine 801 is characterized in that a plurality of groups of rotating frame discs are sleeved on a rotating shaft and provided with a pivot bearing frame, each rotating frame disc is a solid disc body, a plurality of bearing frame rods are inserted into the outer edge of each rotating frame disc in an equiangular mode to form similar solar cells, when the printed circuit board enters the similar solar cells, the equipment automatically rotates, and the solar panel turnover machine 801 automatically enables the PCB to enter the next process step through one-by-one collection, face turning, transmission and cooling; preferably, a fan is further disposed on the solar panel turnover machine 801 to accelerate cooling of the PCB.

The exposure production line 600 comprises two single-side exposure machines 601, and a turnover mechanism 900 is arranged between the two single-side exposure machines 601. The single-side exposure machine 601 comprises an alignment drying rack, an exposure negative film, an LED lamp source and a conveying device for grabbing and conveying the PCB; in the exposure process, the conveying device grabs the PCB to the alignment drying frame, the alignment drying frame aligns the exposure film with the PCB, the LED light source irradiates the PCB to be exposed after the alignment is completed, the PCB after single-side exposure is conveyed to an outlet of the single-side exposure machine 601 through the conveying mechanism, and the turnover mechanism 900 turns over the PCB and then conveys the PCB to the next single-side packaging device to expose the other side of the PCB.

Further, the initial part of the exposure production line 600 is further sequentially provided with a temporary storage 802 for temporarily storing the PCB, a centering machine 803 for pre-positioning the PCB, and a cleaning machine 804 for removing dust and dirt on the surface of the PCB. Because the exposure of the PCB needs a certain time, the PCB needs to wait for the completion of the exposure of the PCB of the previous batch before the exposure production line 600 to enter, the temporary storage machine 802 is arranged for temporarily storing the PCB which does not enter the exposure production line 600, the exposure process of the PCB requires that the PCB is covered with an exposure film, the accurate matching of the PCB and the exposure film is a key factor for the success or failure of the exposure, the position of the PCB is pre-adjusted before entering the exposure process, and the dust of the PCB is removed, thereby being beneficial to the smooth proceeding of the exposure process.

The utility model also provides a PCB board hinders and welds the optimal embodiment of seal automation line.

The utility model provides a PCB board hinders and welds seal automation line, PCB board earlier through snatching through automatic trigger 100 of putting to place on the first silk screen printing machine 201 that is used for the consent stamp-pad ink, the back is accomplished in the consent process, conveys through tilting mechanism 900 and carries out the printing ink stamp-pad ink of A face to the PCB board on the second silk screen printing machine 202, and the printing ink of A face finishes, conveys through tilting mechanism 900 and carries out the printing ink stamp-pad ink to the B face of PCB board by third silk screen printing machine 203. The PCB board of accomplishing two-sided printing ink stamp-pad ink passes through the transportation of first conveyer belt 300, transportation to tunnel oven 400, tunnel oven 400 is equipped with 17 positions in storehouse altogether, preceding 5 positions in storehouse are the district 401 of stewing that does not have hot-blast supply, PCB accomplishes a period of stewing in the district 401 of stewing earlier, reentrant drying zone 402, drying zone 402 is equipped with 12 heated warehouses, each heated warehouse temperature of drying zone 402 can set for alone, each heated warehouse reduces along the ascending back of transfer direction temperature earlier, the heated warehouse of the highest temperature sets up the intermediate position of drying zone 402, the intermediate position of this department is not the positive centre, can be partial to head or tail according to actual technology requirement. The dried PCB is conveyed to the second conveyor 500 to prepare for entering into an exposure process, and before entering into the exposure process, the PCB is cooled on the second conveyor 500 by a cooling device, which is a fan set at two sides of the second conveyor 500 in this embodiment, and the fan set provides air cooling; the PCB continues to move forward under the drive of a second transmission belt, and enters a solar panel turnover machine 801 to be cooled for the second time; the cooled PCB is pushed to the temporary storage machine 802 by the solar panel turnover machine 801 to wait for entering an exposure process, the PCB needs to be pre-positioned by the centering machine 803 before the exposure process, and enters the cleaning machine 804 after the pre-positioning is completed, and the cleaning machine 804 removes dust on the surface of the PCB and then enters the exposure process. The exposure process comprises two single-side exposure machines 601 and a turnover mechanism 900 connected with the single-side exposure machines 601, and after the previous single-side exposure machine 601 completes the exposure of the A side, the PCB enters the next single-side exposure machine 601 through the grabbing of the turnover mechanism 900 to carry out the exposure of the B side. The exposed PCB is finally captured by the automatic board receiving machine 700, completing the entire automation process.

Above, only the preferred embodiment of the present invention has been described, the present invention is not limited to the above embodiment, and the technical effects of the present invention can be achieved by the same means, which all belong to the protection scope of the present invention.

Claims

1. The utility model provides a PCB board hinders and welds seal automation line which characterized in that:

the automatic plate placing machine comprises an automatic plate placing machine for automatically taking and placing a plate, a full-automatic silk-screen production line, a first conveyor belt, a tunnel oven, a second conveyor belt, an exposure production line and an automatic plate collecting machine for collecting a PCB; the automatic plate placing machine is in butt joint with an inlet of a full-automatic silk-screen production line, an outlet of the full-automatic silk-screen production line is in butt joint with an inlet of a tunnel oven through a first conveyor belt, an outlet of the tunnel oven is in butt joint with an inlet of an exposure production line through a second conveyor belt, and an outlet of the exposure production line is in butt joint with an automatic plate receiving machine.

2. The PCB solder mask automatic production line of claim 1, wherein: the full-automatic silk screen printing production line includes in proper order that the first silk screen printing machine that is used for carrying on the consent stamp-pad ink, the second silk screen printing machine that is used for PCB board A face stamp-pad ink, the third silk screen printing machine that is used for PCB board B face stamp-pad ink, all adopt tilting mechanism to be connected between first silk screen printing machine and the second silk screen printing machine, between second silk screen printing machine and the third silk screen printing machine.

3. The PCB solder mask automatic production line of claim 1, wherein: the tunnel oven sequentially comprises a standing zone and a drying zone.

4. The PCB solder mask automatic production line of claim 3, wherein: the drying area is divided into a plurality of heating bins, and the temperature of each heating bin is increased and then reduced along the conveying direction.

5. The PCB solder mask automatic production line of claim 1, wherein: the second conveyor belt is provided with a cooling device for cooling the PCB.

6. The PCB solder mask automatic production line of claim 1, wherein: and a solar panel turnover machine used for cooling the PCB is arranged between the second conveyor belt and the inlet of the exposure production line.

7. The PCB solder mask automatic production line of claim 1, wherein: the initial part of the exposure production line is also sequentially provided with a temporary storage machine for temporarily storing the PCB, a centering machine for pre-positioning the PCB and a cleaning machine for removing dust and dirt on the surface of the PCB.

8. The PCB solder mask automatic production line of claim 1, wherein: the exposure production line comprises two single-side exposure machines, and a turnover mechanism is arranged between the two single-side exposure machines; the single-side exposure machine comprises an alignment drying rack, an exposure negative film, an LED lamp source and a conveying device for grabbing and conveying the PCB.