CN114745864A - PCB board three proofings lacquer intelligence coating device - Google Patents

Abstract

The application relates to the technical field of electronic part processing, especially, relate to a PCB board three proofings lacquer intelligence coating device, including controlling means, feed arrangement, extracting device and device body, this internal conveyor and the spraying subassembly of being equipped with of device still is equipped with detection device between feed arrangement and conveyor. The utility model provides a PCB board three proofings lacquer intelligence coating device begins from placing the PCB board, the coating of three proofings lacquer is realized to the back full automatization, the clamp of PCB among this device send the device to press from both sides under the prerequisite of accurate judgement PCB board position and get the action, when guaranteeing to press from both sides the dynamics of getting, the effectual too big condition of centre gripping dynamics of avoiding, it is steady to press from both sides the transport process of getting, and the spraying process flow is shortened to the mode of spraying and adjustable slope spraying simultaneously about adopting, moreover, the steam generator is simple in structure, high durability and convenient use, the problem that the easy production PCB board component below of automatic spraying of machine can not reach is solved when the PCB board is reliably carried in the assurance.

Description

PCB board three proofings lacquer intelligence coating device

Technical Field

The application relates to the technical field of electronic part processing, especially, relate to a PCB board tri-proof lacquer intelligence coating device.

Background

The statements in this section merely provide background information related to the present application and may not constitute prior art.

A Printed Circuit Board (PCB) is an important electronic component, and is a carrier for electrical interconnection of electronic components, and as long as there are electronic components such as integrated circuits, the PCB is used to electrically interconnect the components, so that the PCB is widely used in various fields and industries such as daily life of residents and industrial control, and therefore, in practical applications, especially in some occasions where the requirement for use reliability is high, there are high requirements for reliability and stability of the PCB; in the prior art, a layer of three-proofing paint is added on a PCB by brushing, spraying or dip-coating the PCB, and the PCB using the three-proofing paint generally has the performances of water resistance, moisture resistance, dust resistance, three-proofing, cold and hot shock resistance, aging resistance, radiation resistance, salt mist resistance, ozone corrosion resistance, vibration resistance, good flexibility, strong adhesive force and the like.

The spraying method is the most common coating method in the industry and is divided into automatic mechanical spraying and manual spraying; the automatic spraying precision of the machine is high, the automatic spraying is uniform and high in benefit, the automatic detection can be realized, the automatic spraying machine is suitable for large-scale production and customers who produce a large amount of products or products for a long time, but the automatic spraying of the machine is generally high in cost at present, the two surfaces of most of the automatic spraying machines cannot be sprayed simultaneously, the requirement on the accuracy of operation is high, and shadows (where the lower parts of components are not covered with the three-proofing paint) can be generated.

Disclosure of Invention

Based on this, to above-mentioned technical problem, the application provides a PCB board three proofings lacquer intelligence device of coating.

The technical scheme that this application solved the problem that prior art exists adopted is:

the application provides a PCB three-proofing paint intelligent coating device, which comprises a control device, a feeding device, a taking device and a device body positioned between the feeding device and the taking device, wherein a conveying device and a spraying assembly are fixedly installed in the device body; the spraying assembly comprises a first spraying assembly and a second spraying assembly which are fixedly arranged above and below the conveying device respectively.

Preferably, the first spraying component and the second spraying component respectively comprise at least two spraying devices, and included angles formed by the spraying directions of at least two spraying devices in the spraying devices belonging to the same spraying component and the conveying direction of the conveying device are respectively an acute angle and an obtuse angle.

Preferably, the first spray assembly includes a second spray device and a fourth spray device, and the second spray assembly includes a first spray device and a third spray device.

Preferably, the conveying device comprises a first conveying device and a second conveying device, the device body comprises a front support and a rear support which are fixedly arranged on the bottom plate in parallel and parallel at the top, and the first conveying device and the second conveying device which are symmetrical are fixedly arranged at two ends of the same side of the top of the front support and the top of the rear support respectively; a first side plate and a second side plate are fixedly arranged on two side surfaces of the front support and the rear support respectively, and a second spraying device and a fourth spraying device are fixedly arranged between the first side plate and the second side plate and above the conveying device; and a first spraying device and a third spraying device are fixedly arranged between the first side plate and the second side plate and below the conveying device.

Preferably, the first and second conveying devices comprise a first and second conveying motors fixedly mounted at two ends of the top of the front support, and the first and second conveying motors are hinged with a first and second conveying fixed blocks fixedly mounted at two ends of the top of the rear support through a first and second conveying screws respectively fixedly connected with corresponding motor shafts; a first clamping and conveying device and a second clamping and conveying device are in threaded connection at the positions of the first conveying screw rod and the second conveying screw rod, which are at the same distance from the first conveying motor and the second conveying motor; the first and second clamping and conveying devices are respectively connected with a first conveying guide rail and a second conveying guide rail which are fixedly arranged at two ends of the front bracket and the rear bracket in a sliding manner; a through groove is formed in the middle of the first side plate or the second side plate in an integrated mode in the same direction as the conveying direction of the first clamping and conveying device or the second clamping and conveying device, a first photoelectric switch is fixedly installed in the through groove, and the first photoelectric switch, the first conveying motor and the second conveying motor are electrically connected with the control device.

Preferably, the first clamping and conveying device comprises a conveying block in threaded connection with the first conveying screw through an internal thread, a clamping cylinder is fixedly mounted at the top of the conveying block, a clamping part is fixedly mounted at the top of a piston rod of the clamping cylinder, and a horizontal groove is formed in the middle of a clamping surface of the clamping part.

Preferably, the second clamping device and the first clamping device are identical in structure.

Preferably, the clamping cylinder is connected with a solenoid valve through a pipeline, and the solenoid valve is electrically connected with the control device.

Preferably, the first, second, third and fourth spraying devices comprise fixing plates, one end of each fixing plate is fixedly provided with a fixing screw, the fixing screw is in threaded connection with the first side plate, the other end of each fixing plate is fixedly provided with a hinge block, and the fixing screws are hinged with the second side plate through the hinge blocks; a main pipe is fixedly arranged above the fixed plate, and a plurality of atomizing nozzles are connected to the main pipe; the main pipe inlets of the main pipes of the first, second, third and fourth spraying devices are respectively connected with outlets on the first, second, third and fourth diaphragm pumps in the diaphragm pump set through pipelines; inlets on the first, second, third and fourth diaphragm pumps are respectively connected into a three-proofing paint box through pipelines; the first, second, third and fourth diaphragm pumps are electrically connected with the control device; a sewage draining port is formed in the bottom of the first side plate or the second side plate, and the outer part of the sewage draining port is fixedly connected with a sewage draining pipe; the exhaust hole is arranged on the first side plate or the second side plate, and an exhaust pipe is fixedly arranged outside the exhaust hole.

Preferably, a detection device is fixedly installed between the feeding device and the device body, the detection device comprises a first fixing rod and a second fixing rod which are fixedly installed at two ends of the device body, a first detection grating and a second detection grating are respectively and fixedly installed on the first fixing rod and the second fixing rod, and the first detection grating and the second detection grating are electrically connected with the control device;

the front gear and the rear gear device respectively comprise a first cylinder and a second cylinder which are fixedly arranged on the device body, the top ends of a first piston rod and a second piston rod on the first cylinder and the second cylinder are respectively and fixedly provided with a front baffle and a rear baffle, the first cylinder and the second cylinder are respectively connected with a front gear electromagnetic valve and a rear gear electromagnetic valve through pipelines, and the front gear electromagnetic valve and the rear gear electromagnetic valve are both connected with an external air source pipeline and are electrically connected with the control device;

the feeding and taking device comprises a feeding and taking lifting device, the top of the feeding and taking lifting device is fixedly connected with a first supporting plate and a second supporting plate, the feeding and taking feeding device is fixedly mounted on the first supporting plate and the second supporting plate, and a first supporting plate and a second supporting plate are fixedly mounted on the top of the feeding and taking feeding device.

Compared with the prior art, the beneficial effect of this application is:

1. according to the intelligent coating device for the three-proofing paint of the PCB, through the matching of the conveying device and the spraying component, not only can the two sides be simultaneously sprayed, but also the multi-angle uniform spraying can be realized, and the situation that the three-proofing paint cannot be covered below the upper component and the lower component of the PCB in the previous spraying operation can be effectively avoided;

2. the whole process is operated intelligently, so that the labor is saved;

3. the design of the front gear device and the rear gear device ensures that the spraying operation process is totally closed, the generated waste gas and waste liquid are discharged through the exhaust pipe and the blow-off pipe, and the production process is safe and environment-friendly;

4. the PCB board is dried automatically after spraying, and manual carrying and adjustment are not needed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the application, and the description of the exemplary embodiments and illustrations of the application are intended to explain the application and are not intended to limit the application.

FIG. 1 is a schematic diagram of the overall structure of an intelligent coating device for three-proofing paint of a PCB according to the present application,

FIG. 2 is a schematic diagram of the overall structure of the oblique side of the intelligent coating device for three-proofing paint of PCB shown in FIG. 1,

FIG. 3 is a schematic diagram of the internal structure of an intelligent coating device for three-proofing paint of PCB according to the present application,

FIG. 4 is a top view of the internal structure of an intelligent coating device for three-proofing paint of PCB according to the present application,

FIG. 5 is a schematic view of the overall structure of a first clamping and conveying device of the intelligent coating device for three-proofing paint of PCB,

FIG. 6 is a schematic structural view of a spraying device of the PCB three-proofing paint intelligent coating device of the present application,

FIG. 7 is a gas circuit connection diagram of a front baffle device of the intelligent coating device for three-proofing paint of PCB board,

FIG. 8 is a gas circuit connection diagram of a rear baffle device of the PCB three-proofing paint intelligent coating device of the present application,

FIG. 9 is a pipeline connection diagram of PCB board three proofings lacquer intelligence coating device centre gripping cylinder of this application.

In the figure:

1. a feeding device, 10, a feeding lifting device, 101, a feeding lifting motor, 102, a first push rod, 11, a first supporting plate, 12, a feeding device, 121, a feeding motor, 122, a feeding push rod, 13, a first supporting plate,

2. a front gear device 200, a first cylinder 201, a first piston rod 202, a front baffle plate 203, a front gear electromagnetic valve 204, a front gear main air path 205, a front gear air inlet pipe 206, a front gear air outlet pipe,

3. a bottom plate, a plurality of first connecting plates,

4. a front bracket 5, a rear bracket 6, an upper cover plate 60, a first side plate 61, a second side plate,

70. a first conveying motor 71, a second conveying motor 72, a first conveying screw 73, a second conveying screw 74, a first conveying guide rail 75, a second conveying guide rail 76, a first clamping and conveying device 77, a second clamping and conveying device 78, a first conveying fixed block 79 and a second conveying fixed block,

760. 761 internal thread, a conveying block, 762, a clamping cylinder, 763, a piston rod, 764, a clamping part, 765, an electromagnetic valve, 766, a three-way joint, 767, a first pipeline, 768, a second pipeline, 769, a main air path,

8. a material taking device, 80, a material taking lifting device, 801, a material taking lifting motor, 802, a second push rod, 81, a second supporting plate, 82, a material taking feeding device, 821, a material taking feeding motor, 822, a material taking feeding push rod, 83, a second supporting plate,

9. a rear gear device 900, a second cylinder 901, a second piston rod 902, a rear baffle plate 903, a rear gear electromagnetic valve 904, a rear gear main gas path 905, a rear gear gas inlet pipe 906 and a rear gear gas outlet pipe,

14. a detection device 141, a first detection grating 142, a second detection grating 143, a first fixing rod 144, a second fixing rod,

15. a lower heating plate 16, an upper heating plate,

17. a spraying component 170, a first spraying device, 171, a second spraying device, 172, a third spraying device, 173, a fourth spraying device, 17a, a main pipe inlet, 17b, a main pipe, 17c, an atomizing nozzle, 17d, a fixing plate, 17e, a fixing screw, 17f, a hinge block, 17g, a hinge groove,

18. a through-hole is formed in the substrate,

19. diaphragm pump set, 190, first diaphragm pump, 191, second diaphragm pump, 192, third diaphragm pump, 193, fourth diaphragm pump,

20. the device comprises a through groove 21, a first photoelectric switch 22, a three-proofing paint box 23, a sewage discharge pipe 24, an exhaust pipe 25, a control device 26 and a sewage discharge outlet.

The specific implementation mode is as follows:

the present application will be further described with reference to the following drawings and examples.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only relational terms determined for convenience in describing structural relationships of the parts or elements of the present disclosure, and do not refer to any parts or elements of the present disclosure, and are not to be construed as limiting the present disclosure.

Fig. 1 to 4 show a preferred embodiment of an intelligent coating device for three-proofing paint of a PCB, which includes a control device 25, a feeding device 1, a material taking device 8, and a device body located between the feeding device 1 and the material taking device 8, wherein a conveying device and a spraying component 17 are fixedly installed in the device body; the device body shell is of a semi-closed structure with an opening in the upper portion of the front side and the rear side, a front blocking device 2 and a rear blocking device 9 which can be opened and closed are fixedly installed in the front of the device body and in the rear of the device body respectively, and when the front blocking device 2 and the rear blocking device 9 are closed, a closed working space is formed inside the device body.

The device body comprises a front support 4 and a rear support 5 which are fixedly arranged on the bottom plate 3 in parallel and parallel to each other at the top, and a first conveying device and a second conveying device which are symmetrical are respectively and fixedly arranged at two ends of the same side of the tops of the front support 4 and the rear support 5; a first side plate 60 and a second side plate 61 are respectively fixedly arranged on the two side surfaces of the front support 4 and the rear support 5, and an upper cover plate 6 is fixedly arranged on the top of the front support and the rear support; a first spraying component, namely a second spraying device 171 and a fourth spraying device 173 are fixedly arranged between the first side plate 60 and the second side plate 61 above the conveying device; a second spraying component, namely a first spraying device 170 and a third spraying device 172, is fixedly arranged between the two side plates and below the conveying device; in this embodiment, the fourth spraying device 173 belonging to the first spraying assembly has a spraying direction of an acute angle with respect to the conveying direction of the conveying device, and the second spraying device 171 has a spraying direction of an obtuse angle with respect to the conveying direction of the conveying device; the third spraying device 172 belonging to the second spraying assembly has a spraying direction which is an oblique upper left direction and an acute angle with the conveying direction of the conveying device, and the first spraying device 170 has a spraying direction which is an oblique upper right direction and an obtuse angle with the conveying direction of the conveying device.

The first conveying device comprises a first conveying motor 70 fixedly arranged on one side of the top of the front support 4, and the first conveying motor 70 is hinged with a first conveying fixing block 78 fixedly arranged on one side of the top of the rear support 5 through a first conveying screw 72 fixedly connected with a motor shaft of the first conveying motor; the second conveying device comprises a second conveying motor 71 fixedly arranged on the other side of the top of the front support 4, and the second conveying motor 71 is hinged with a second conveying fixed block 79 fixedly arranged on the other side of the top of the rear support 5 through a second conveying screw 73 fixedly connected with a motor shaft of the second conveying motor 71; the first conveying device and the second conveying device are parallel; a first pinch device 76 is connected to the first conveying screw 72 in a threaded manner, and a second pinch device 77 is connected to the second conveying screw 73 in a threaded manner at a position corresponding to the first conveying screw 72 in parallel; the bottoms of the first pinch device 76 and the second pinch device 77 are respectively connected with a first conveying guide rail 74 and a second conveying guide rail 75 which are fixedly arranged at two ends of the front support 4 and the rear support 5 in a sliding manner, and the first conveying motor 70 and the second conveying motor 71 are both electrically connected with the control device 25.

A sewage draining port 26 is formed at the bottom of the first side plate 60 or the second side plate 61, and the outside of the sewage draining port 26 is fixedly connected with a sewage draining pipe 23; the first side plate 60 or the second side plate 61 is also provided with an exhaust hole, and the exhaust pipe 24 is fixedly arranged outside the exhaust hole.

Fig. 5 shows a schematic structural diagram of the first pinch device 76, as shown in the figure, the first pinch device 76 includes a conveying block 761 in threaded connection with the first conveying screw 72 through an internal thread 760, a clamping cylinder 762 is fixedly mounted at the top of the conveying block 761, a clamping portion 764 is fixedly mounted at the top end of a piston rod 763 of the clamping cylinder 762, and a horizontal groove is formed in a middle position of a clamping end face of the clamping portion 764; the second gripping device 77 is identical in structure to the first gripping device 76, and when the device is installed and used, the clamping parts 764 of the first gripping device 76 and the second gripping device 77 face the middle positions of the first conveying screw 72 and the second conveying screw 73; as shown in fig. 9, a schematic diagram of a pipeline connection structure between the clamping cylinder 762 of the first clamping device 76 and the clamping cylinder 762 of the second clamping device is shown, as can be seen from the diagram, the interfaces of the two clamping cylinders 762 close to the top of the piston rod 763 are respectively connected to the same three-way joint 766 through a pipeline, and then connected to the solenoid valve 765 through the second pipeline 768, the interfaces of the two clamping cylinders 762 far from the top of the piston rod 763 are respectively connected to the other three-way joint 766 through a pipeline, and then connected to the other output end interface of the solenoid valve 765 through the first pipeline 767, and the air inlet end interface of the solenoid valve 765 is connected to the main pipeline 769.

As shown in fig. 1, a through groove 20 is integrally formed in the middle of the first side plate 61 in the same direction as the conveying direction of the first clamping and conveying device 76 or the second clamping and conveying device 77, a first photoelectric switch 21 is fixedly installed in the through groove 20, and the fixedly installed position in the through groove 20 can be replaced after the first photoelectric switch 21 is removed; the first photoelectric switch 21 is electrically connected to the control device 25.

Fig. 6 shows a schematic structural diagram of each spraying device (including a first spraying device 170, a second spraying device 171, a third spraying device 172, and a fourth spraying device 173) in this embodiment, as shown in the figure, the spraying device includes a fixing plate 17d, one end of the fixing plate 17d is fixedly provided with a fixing screw 17e, the fixing screw 17e is in threaded connection with the first side plate 60 through a threaded hole on the first side plate 60, the other end of the fixing plate is fixedly provided with a hinge block 17f, a middle position of the outside of the hinge block 17f is provided with a hinge groove 17g, and the hinge groove 17g is sleeved in the second side plate 61 to realize the hinge connection between the hinge block 17f and the second side plate 61; a main pipe 17b is fixedly arranged above the fixed plate 17d, and a plurality of atomizing nozzles 17c are connected to the main pipe 17 b; the main inlet 17a of each spraying device manifold 17b is connected with the outlets of the first diaphragm pump 190, the second diaphragm pump 191, the third diaphragm pump 192 and the fourth diaphragm pump 193 in the diaphragm pump group 19 through pipelines; inlets of the first diaphragm pump 190, the second diaphragm pump 191, the third diaphragm pump 192 and the fourth diaphragm pump 193 are respectively connected into the three-proofing paint box 22 through pipelines;

as shown in fig. 1, in the present embodiment, a detection device 14 is fixedly installed between the feeding device 1 and the device body, the detection device 14 includes a first fixing rod 143 and a second fixing rod 144 fixedly installed at two ends of the device body, the first fixing rod 143 and the second fixing rod 144 are respectively fixedly installed with a first detection grating 141 and a second detection grating 142, and the first detection grating 141 and the second detection grating 142 are electrically connected to the control device 25; the first and second detection gratings 141 and 142 are a group of detection gratings used in pairs, and generate an electrical signal when a PCB is fed between the first and second detection gratings 141 and 142.

The front gear device 2 comprises a first cylinder 200 fixedly arranged on the device body, a front baffle 202 is fixedly arranged at the top end of a first piston rod 201 on the first cylinder 200, the first cylinder 200 is connected with a front gear electromagnetic valve 203 through a pipeline, and the front gear electromagnetic valve 203 is connected with an external air source through a pipeline and is electrically connected with the control device 25; the rear gear device 9 comprises a second cylinder 900 fixedly mounted on the device body, a rear baffle 902 is fixedly mounted at the top end of a second piston rod 901 on the second cylinder 900, the second cylinder 900 is connected with a rear gear electromagnetic valve 903 through a pipeline, and the rear gear electromagnetic valve 903 is connected with an external air source pipeline and electrically connected with the control device 25.

The feeding device 1 comprises a feeding lifting device 10, the top of the feeding lifting device 10 is fixedly connected with a first supporting plate 11, a feeding device 12 is fixedly arranged on the first supporting plate 11, and a first supporting plate 13 is fixedly arranged on the top of the feeding device 12; the material taking device 8 comprises a material taking lifting device 80, a second supporting plate 81 is fixedly connected to the top of the material taking lifting device 80, a material taking feeding device 82 is fixedly installed on the second supporting plate 81, and a second supporting plate 83 is fixedly installed on the top of the material taking feeding device 82; the feeding lifting device 10, the feeding device 12, the material taking lifting device 80 and the material taking feeding device 82 all use electric push rods, and the feeding lifting device 10 comprises a first push rod 102 and a feeding lifting motor 101 for controlling the lifting of the first push rod 102; the feeding device 12 comprises a feeding push rod 122 and a feeding motor 121 for controlling the feeding of the feeding push rod 122; the material taking lifting device 80 comprises a second push rod 802 and a material taking lifting motor 801 for controlling the lifting of the second push rod 802; the material taking and feeding device 82 includes a material taking and feeding push rod 822 and a material taking and feeding motor 821 that controls feeding of the material taking and feeding push rod 822.

In the intelligent coating device for the three-proofing paint of the PCB, an upper heating plate 16 and a lower heating plate 15 are respectively and fixedly arranged above and below a first conveying device and a second conveying device behind a spraying assembly 17 and in front of a rear support, and two sides of the upper heating plate 16 and two sides of the lower heating plate 15 are respectively and fixedly arranged on a first side plate 60 and a second side plate 61; the upper heating plate 16 and the lower heating plate 15 are fixedly provided with electric heating devices on the surfaces facing the first or second conveying device, and the electric heating devices are electrically connected with the control device 25.

In addition, when the intelligent coating device for the three-proofing paint of the PCB is actually used, the angle of each spraying device of the spraying component 17 can be adjusted according to needs so as to adapt to PCBs with different sizes, specifications and component layouts, the specific adjustment method refers to the steps shown in the figures 2 and 6, the structure of each spraying device is shown in the figure 6, one end of each spraying device is provided with a hinge block 17f which is hinged to a first side plate 60, the other end of each spraying device is provided with a fixing screw 17e which is in threaded connection with a second side plate 61, and as can be seen in the figure 2, one end of each fixing screw 17e realizes the fixation of the spraying device through a bolt; when the spraying angle of the spraying device needs to be adjusted, the bolt on the fixing screw 17e can be loosened, then the fixing screw 17e is rotated, fig. 2 shows that the top end of the fixing screw 17e is provided with a groove, the fixing screw 17e can be screwed by a large straight screwdriver to adjust the spraying angle, and then the bolt outside the fixing screw 17e is screwed.

The work flow method of the intelligent coating device for the three-proofing paint of the PCB comprises the following steps:

the first step is as follows: and (4) feeding.

The PCB needing to be painted with the three-proofing paint is horizontally placed on the first supporting plate 13, an automatic starting button of the control device 25 is pressed, the control device 25 controls the feeding lifting device 10 (in the embodiment, an electric push rod is used) to lift by controlling the rotation of the feeding lifting motor 101, the feeding lifting motor 101 uses a stepping motor, the feeding lifting motor 101 stops rotating after rotating to a set pulse number N1, at the moment, the PCB on the first supporting plate 13 is driven by the feeding lifting device 10 to rise to a certain horizontal position, the horizontal position meets the condition that the PCB on the first supporting plate 13 is located below the upper cover plate 6, and the top planes of the clamping portions 764 of the first clamping and conveying device 76 and the second clamping and conveying device 77 are above.

The second step is that: feeding, after the detection device 14 detects the first supporting plate 13, the control device 25 controls the front gear device 2 to open a feeding port at the front side of the device body; after the first pinch device 76 and the second pinch device 77 clamp the PCB, the feeding device 12 controls the first pallet to reset, and simultaneously the front baffle device 2 closes the front side feeding inlet, the detailed steps are as follows:

firstly, the control device 25 controls the feeding motor 121 to rotate, so that the feeding device 12 drives the first supporting plate 13 to realize horizontal conveying action, when the first supporting plate 13 enters an induction area between the first detection grating 141 and the second detection grating 142 of the detection device 14, the detection device 14 sends a signal to the control device 25, the control device 25 immediately controls a coil of the front-blocking electromagnetic valve 203 to be electrified, the front-blocking electromagnetic valve 203 acts, so that an air source of a front-blocking main air passage 204 enters the first air cylinder 200 from the front-blocking air outlet pipe 206, the first piston rod 201 of the first air cylinder 200 is pushed to move backwards, and air behind the piston rod of the first air cylinder 200 is discharged from the front-blocking air inlet pipe 205, so that the front blocking plate 202 fixedly connected with the first piston rod 201 is driven to move downwards, and a feeding port in front of the device body is opened;

then, the control device 25 continuously controls the feeding motor 121 to make the first pallet 13 carrying the PCB continuously convey forward, wherein the feeding motor 121 is a stepping motor, and stops rotating after the feeding motor 121 rotates to set the pulse number equal to N2 (when the feeding motor 121 rotates to set the pulse number equal to N2, the middle position of the first pallet 13 is located right above the middle position of the first pinch device 76 and the second pinch device 77); then the control device 25 controls the feeding and lifting motor 101 to rotate reversely by the pulse number N3 (when the set pulse number N3 is set by the feeding and lifting motor 101 rotating reversely, the edge of the PCB board on the first supporting board 13 is in the direction of the notch of the horizontal groove in the middle of the clamping end face of the clamping part 764);

then, the control device 25 controls the energization of the solenoid valve coil of the solenoid valve 765 to actuate the solenoid valve 765, so that the compressed air source in the main air path 769 enters the two clamping cylinders 762 respectively through the first pipeline 767 and the three-way joint 766, the air inside the two clamping cylinders 762 enters the other three-way joint 766 through the two pipelines and then enters the solenoid valve 765 through the second pipeline 768, so that the two clamping cylinders 762 actuate, the two clamping parts 764 are ejected out from the middle under the action of the piston rod 763 until the two clamping parts 764 abut against the edge of the PCB, so as to complete the clamping operation of the PCB;

finally, the control device 25 controls the feeding lifting device 10 to descend, the feeding lifting motor 101 stops after rotating for N4 pulses (when the rotating pulse number of the feeding lifting motor 101 is N4, it is satisfied that the bottom component of the PCB board has been separated from the first supporting board 13 and the bottom of the first supporting board 13 does not touch the front bracket 4 of the device body), then the control device 25 controls the feeding device 12 to reset to the initial position, when the first supporting board 13 withdraws, and the detection device 14 detects that there is no object between the first detection grating 141 and the second detection grating 142, the control device 25 controls the front baffle 202 of the front baffle device 2 to ascend to block the feeding inlet at the front part of the device body.

The third step: and (5) conveying materials. The control device 25 controls the first conveying motor 70 and the second conveying motor 71 to move synchronously, the PCB clamped by the first clamping and conveying device and the second clamping and conveying device is conveyed, spraying operation of three-proofing paint and heating and drying of the three-proofing paint of the PCB are completed in the conveying process, and the detailed steps are as follows:

in the second step, after two clamping parts 764 finish the clamping operation to the both sides board edge of PCB board, and front fender device 2 finishes the protection to the front feeding port of device body and shelters from, begin to carry out the transport operation of PCB board, it is worth mentioning that backstop device 9 also is in device body rear portion discharge gate department at this moment, and backstop device 9 blocks the discharge gate at device body rear portion this moment promptly.

When the PCB is conveyed, the control device 25 controls the first conveying motor 70 and the second conveying motor 71 to synchronously move, and as the first clamping and conveying device 76 and the second clamping and conveying device 77 are respectively in threaded connection with the first conveying screw 72 and the second conveying screw 73, the PCB can horizontally move in the front-back direction in the device body through threaded transmission; in this step, the control device 25 controls the first conveying motor 70 and the second conveying motor 71 to rotate synchronously, the PCB board is conveyed from the front part of the device body to the back part slowly, as shown in fig. 1, when the second conveying fixed block 79 of the second clamping and conveying device 77 reaches the detection position of the first photoelectric switch 21, the first photoelectric switch 21 detects a signal and transmits the signal to the control device 25, after receiving the signal, the control device 25 controls the first diaphragm pump 190 motor, the second diaphragm pump 191 motor, the third diaphragm pump 192 motor and the fourth diaphragm pump 193 motor in the diaphragm pump set 19 to be powered on, the three-proofing paint in the paint box 22 enters the spraying assembly 17 through the diaphragm pump set 19 connected through a pipeline, and the first spraying device 170, the second spraying device 171, the third spraying device 172 and the fourth spraying device 173 start spraying; and at this time, the control device 25 starts to perform pulse counting operation on the first conveying motor 70 and the second conveying motor 71, and stops the power supply of the diaphragm pump set 19 after the first conveying motor 70 and the second conveying motor 71 synchronously operate for N5 pulse numbers, namely, stops the spraying operation (at this time, the PCB is conveyed out of the spraying area); then, the first conveying motor 70 and the second conveying motor 71 run synchronously again for N6 pulse numbers, and when the pulse numbers reach between the upper heating plate 16 and the lower heating plate 15, the two motors stop rotating, and at this time, the control device 25 energizes and heats the electric heating devices on the upper heating plate 16 and the lower heating plate 15, so as to dry the PCB.

The fourth step: and (4) taking materials.

In the third step, the time T for drying the PCB is determined according to the type of the three-proofing paint, when the time T is up, the control device 25 stops supplying power to the electric heating devices on the upper heating plate 16 and the lower heating plate 15, stops drying the PCB, then controls the first conveying motor 70 and the second conveying motor 71 to synchronously move N7 pulses to reach the rear position of the device body, and simultaneously controls the backstop electromagnetic valve 903 by the control device 25, so that the compressed air in the backstop main air path 904 enters the second air cylinder 900 through the backstop air outlet pipe 906, the air in the second air cylinder 900 returns to the backstop electromagnetic valve 903 through the backstop air inlet pipe 905, the second piston rod 901 moves downwards under the action of the air path, and drives the backstop 902 fixedly connected with the second piston rod 901 to move downwards, thereby completing the opening operation of the backstop device 9;

then the control device 25 controls the material taking lifting device 80 of the material taking device 8 to lift to a proper position between the bottom of the PCB and the rear support frame 5, then controls the material taking feeding device 82 to feed the second support plate 83 fixedly connected with the material taking feeding device 82 to the position below the PCB in the device body, the control device 25 immediately controls the electromagnetic valve 765 to be powered off, the clamping parts 764 at the two ends of the PCB reset under the action of the clamping cylinders 762 at the two sides, and the PCB falls on the second support plate 83; finally, the control device 25 controls the material taking and feeding device 82 to take the PCB out of the device body, and the material taking operation is completed.

The solenoid valve 765, the front-stage solenoid valve 203, and the rear-stage solenoid valve 903 are mounted on the device body casing.

The intelligent coating device for the three-proofing paint of the PCB is simple to use, can realize full-automatic three-proofing paint coating operation, can realize simultaneous double-sided spraying, can select a proper spraying angle according to PCB layout of different components and integrated circuits, and effectively avoids the situation that the three-proofing paint cannot be covered below the components on the PCB in the previous spraying operation; the design of the front gear device and the rear gear device ensures that the spraying operation is safer and more environment-friendly.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Although the embodiments of the present application have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present application, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive effort by those skilled in the art.

Claims (10)

1. The utility model provides a PCB board three proofings lacquer intelligence coating device, includes controlling means (25), and feed arrangement (1), extracting device (8) and be located the device body between feed arrangement (1), extracting device (8), this internal fixed mounting of device has conveyor, spraying assembly (17), its characterized in that:

the shell of the device body is of a semi-closed structure with an opening at the upper parts of the front and rear outer sides, front and rear blocking devices (2 and 9) which can be opened and closed are fixedly arranged at the front and rear parts of the device body respectively, and when the front and rear blocking devices (2 and 9) are closed, a closed working space is formed inside the device body;

the spraying component (17) comprises a first spraying component and a second spraying component which are fixedly arranged above and below the conveying device respectively.

2. The PCB board three proofings lacquer intelligence coating device of claim 1, characterized in that:

the first spraying assembly and the second spraying assembly respectively comprise at least two spraying devices, and included angles formed by the spraying directions of at least two spraying devices in the spraying devices belonging to the same spraying assembly and the conveying direction of the conveying device are respectively acute angles and obtuse angles.

3. The PCB board three proofings lacquer intelligence coating device of claim 2, characterized in that:

the first spray assembly includes a second spray device (171) and a fourth spray device (173), and the second spray assembly includes a first spray device (170) and a third spray device (172).

4. The PCB board three proofings lacquer intelligence coating device of claim 1 or 3, characterized in that:

the conveying device comprises a first conveying device and a second conveying device, the device body comprises a front support (4) and a rear support (5) which are fixedly arranged on the bottom plate (3) in parallel and parallel to the top, and the first conveying device and the second conveying device which are symmetrical are fixedly arranged at two ends of the same side of the tops of the front support (4) and the rear support (5) respectively;

a first side plate (60) and a second side plate (61) are fixedly arranged on two side surfaces of the front support (4) and the rear support (5) respectively, and a second spraying device (171) and a fourth spraying device (173) are fixedly arranged between the first side plate and the second side plate (60) and above the conveying device; and a first spraying device (170) and a third spraying device (172) are fixedly arranged between the first side plate and the second side plate (60 and 61) and below the conveying device.

5. The PCB board three proofings lacquer intelligence coating device of claim 4, characterized in that:

the first conveying device and the second conveying device comprise a first conveying motor (70) and a second conveying motor (71) which are fixedly arranged at two ends of the top of the front support (4), and the first conveying motor (70) and the second conveying motor (71) are respectively and fixedly connected with a first conveying screw rod (72) and a second conveying screw rod (73) through corresponding motor shafts and are hinged with a first conveying fixed block (78) and a second conveying fixed block (79) which are fixedly arranged at two ends of the top of the rear support (5); a first clamping and conveying device (76) and a second clamping and conveying device (77) are in threaded connection at the same distance from the first conveying screw (72) and the second conveying screw (73) to the first conveying motor (70) and the second conveying motor (71); the first and second pinch devices (76, 77) are respectively connected with the first and second conveying guide rails (74, 75) fixedly arranged at the two ends of the front and rear brackets (4, 5) in a sliding manner; a through groove (20) is formed in the middle of the first side plate (60) or the second side plate (61) in the same direction as the conveying direction of the first clamping and conveying device (76) or the second clamping and conveying device (77), a first photoelectric switch (21) is fixedly mounted in the through groove (20), and the first photoelectric switch (21) and the first conveying motor (70) and the second conveying motor (71) are electrically connected with the control device (25).

6. The PCB board three proofings lacquer intelligence coating device of claim 5, characterized in that:

the first clamping and conveying device (76) comprises a conveying block (761) in threaded connection with a first conveying screw (72) through an internal thread (760), a clamping cylinder (762) is fixedly mounted at the top of the conveying block (761), a clamping part (764) is fixedly mounted at the top of a piston rod (763) of the clamping cylinder (762), and a horizontal groove is formed in the middle position of a clamping surface of the clamping part (764).

7. The PCB board three proofings lacquer intelligence coating device of claim 5, characterized in that:

the second clamping device (77) has the same structure as the first clamping device (76).

8. The PCB board three proofing paint intelligent coating device of claim 6 or 7, characterized in that:

the clamping cylinder (762) is connected with a solenoid valve (765) in a pipeline mode, and the solenoid valve (765) is electrically connected with the control device (25).

9. The PCB board three proofings lacquer intelligence coating device of claim 4, characterized in that:

the first spraying device, the second spraying device, the third spraying device and the fourth spraying device (170, 171, 172 and 173) respectively comprise a fixing plate (17d), one end of the fixing plate (17d) is fixedly provided with a fixing screw rod (17e), the fixing screw rod (17e) is in threaded connection with the first side plate (60) through a threaded hole in the first side plate (60), the other end of the fixing screw rod is fixedly provided with a hinge block (17f), and the hinge block (17f) is hinged to the second side plate (61); a main pipe (17b) is fixedly arranged above the fixed plate (17d), and a plurality of atomizing nozzles (17c) are connected to the main pipe (17 b);

the main inlet pipe orifice (17a) of each manifold (17b) of the first, second, third and fourth spraying devices (170, 171, 172, 173) is respectively connected with the outlet of the first, second, third and fourth diaphragm pumps (190, 191, 192, 193) in the diaphragm pump group (19) through a pipeline; inlets of the first, second, third and fourth diaphragm pumps (190, 191, 192 and 193) are respectively connected into a three-proof paint box (22) through pipelines; the first, second, third and fourth diaphragm pumps (190, 191, 192, 193) are electrically connected with a control device (25);

a drain outlet (26) is formed in the bottom of the first side plate (60) or the second side plate (61), and the outside of the drain outlet (26) is fixedly connected with a drain pipe (23); the first side plate (60) or the second side plate (61) is also provided with an exhaust hole, and an exhaust pipe (24) is fixedly arranged outside the exhaust hole.

10. The PCB board three proofings lacquer intelligence coating device of claim 1, characterized in that:

a detection device (14) is fixedly installed between the feeding device (1) and the device body, the detection device (14) comprises a first fixing rod (143) and a second fixing rod (144) which are fixedly installed at two ends of the device body, a first detection grating (141) and a second detection grating (142) are respectively and fixedly installed on the first fixing rod (143) and the second fixing rod (144), and the first detection grating (141) and the second detection grating (142) are electrically connected with the control device (25);

the front gear and rear gear device (2, 9) respectively comprises a first cylinder (200, 900) and a second cylinder (200, 900) which are fixedly arranged on the device body, the top ends of a first piston rod (201, 901) and a second piston rod (201, 902) on the first cylinder (200, 900) and the second cylinder (200, 900) are respectively and fixedly provided with a front baffle plate and a rear baffle plate (202, 902), the first cylinder (200, 900) and the rear baffle plate are respectively connected with a front gear electromagnetic valve (203, 903) and a rear gear electromagnetic valve (203, 903) through pipelines, and the front gear electromagnetic valve and the rear gear electromagnetic valve (203, 903) are both connected with an external air source pipeline and are electrically connected with the control device (25);

the feeding and taking device (1, 8) comprises a feeding and taking lifting device (10, 80), the top of the feeding and taking lifting device (10, 80) is fixedly connected with a first support plate and a second support plate (11, 81), the first support plate and the second support plate (11, 81) are fixedly provided with a feeding and taking feeding device (12, 82), and the top of the feeding and taking feeding device (12, 82) is fixedly provided with a first supporting plate and a second supporting plate (13, 83).

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