CN116423985B - PCB text printing ink-jet printing system and control method thereof - Google Patents

PCB text printing ink-jet printing system and control method thereof Download PDF

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Publication number
CN116423985B
CN116423985B CN202310588396.5A CN202310588396A CN116423985B CN 116423985 B CN116423985 B CN 116423985B CN 202310588396 A CN202310588396 A CN 202310588396A CN 116423985 B CN116423985 B CN 116423985B
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China
Prior art keywords
pcb
groups
clamping
fixed
feeding
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CN202310588396.5A
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Chinese (zh)
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CN116423985A (en
Inventor
彭德贵
滕剑
杨连卫
秦春华
朱文理
周徐
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Dukan Jiangsu Digital Technology Co ltd
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Dukan Jiangsu Digital Technology Co ltd
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Priority to CN202310588396.5A priority Critical patent/CN116423985B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01Ink jet
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B41J11/0021Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation
    • B41J11/00214Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation using UV radiation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/38Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
    • B41J29/393Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/01Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for special character, e.g. for Chinese characters or barcodes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Ink Jet (AREA)
  • Coating Apparatus (AREA)

Abstract

The invention discloses a PCB text printing ink-jet printing system and a control method thereof, wherein the system comprises a workbench and a feed box, the feed box is arranged at the front side of the workbench, two groups of clamping components for supporting a PCB are transversely and symmetrically arranged above the workbench, and two groups of sliding rails for supporting the clamping components to longitudinally slide are fixed at the top of the workbench; the feed box is a hollow box body with an opening at the top, wherein the hollow box body can accommodate the stacking of the PCB boards. The beneficial effects are that: according to the invention, the feeding boxes capable of stacking a plurality of groups of PCB boards are arranged, so that continuous feeding of the PCB boards is realized by utilizing the two groups of main shafts of the continuously rotating feeding and discharging components to cooperate with the grabbing arms, continuous clamping and finished product removal actions of the PCB boards are realized by the feeding and discharging components extending between the two assembly clamping components, and automatic taking and placing of the PCB boards at the clamping stations are replaced by manual operation, so that the whole printing process is ensured to be free from manual touching of the PCB boards, uninterrupted printing can be realized by the printing system, and the equipment automation degree is higher.

Description

PCB text printing ink-jet printing system and control method thereof
Technical Field
The invention relates to the field of PCB printing equipment, in particular to a PCB text printing ink-jet printing system and a control method thereof.
Background
In the PCB industry, the minimum design distance of characters can reach within 200 μm, few characters are even directly designed on a copper surface, the digital ink-jet printing technology is one of the common technologies for printing characters on the surface of a PCB, the digital ink-jet printing technology is to spray-print a required two-dimensional or three-dimensional graph on a carrier according to a digital model designed in advance by a computer by an addition method, and the principle of a digital character spray printer is to spray-print specific character ink on the PCB according to file data obtained from CAD or CAM and realize instant solidification through an ultraviolet lamp. The character jet printing technology eliminates the process and equipment for making the screen printing plate, and has the advantages of saving the field and space, obviously reducing the material consumption (especially negative film, etc.), shortening the production period of the product, reducing the environmental pollution and reducing the cost. In addition, the continuity of character lines can be ensured by a spray printing mode, so that the problem of incomplete characters in common falling positions in the silk screen printing process can be solved;
based on the characteristics, the digital character jet printer is extremely beneficial to improving the character quality of the PCB and shortening the production flow, but in the large-scale continuous production process of the traditional PCB character jet printer, the PCB needs to be manually taken and placed to a clamping station to finish loading and unloading, the single PCB needs to be manually separated from a clamping tool after printing, and then the unprinted PCB is placed into a clamp to finish clamping, so that the production efficiency is limited by manual operation, and meanwhile, the PCB is manually taken to be easily adhered to the incompletely cured jet ink, so that the risk of product contamination exists.
Disclosure of Invention
The invention aims to solve the problems and provide a PCB text printing ink-jet printing system and a control method thereof, wherein continuous feeding of a PCB is realized by utilizing two groups of main shafts of a continuously rotating feeding and discharging assembly to cooperate with a grabbing arm, so that continuous clamping of the PCB and removal of a finished product are realized by a feeding and discharging assembly extending between two assembly clamping assemblies, automatic taking and placing of the PCB at a clamping station are realized instead of manual work, uninterrupted printing can be realized by the printing system, printing efficiency is higher, and the printing system is explained in detail below.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the invention provides a PCB text printing ink-jet printing system, which comprises a workbench and a feed box, wherein the feed box is arranged at the front side of the workbench, two groups of clamping components for supporting a PCB are transversely and symmetrically arranged above the workbench, and two groups of sliding rails for supporting the clamping components to longitudinally slide are fixed at the top of the workbench;
the utility model discloses a PCB board, including the feed box, the feed box is for holding PCB board stacked open-top's cavity box, and this feed box open-top bilateral symmetry is fixed with two sets of L shape spacing pieces that fall, the outside both sides of feed box transversely run through there are two sets of guide way of vertical extension, and two sets of guide way outsides all are provided with the slide bar of vertical extension, just the guide way bottom the feed box outside is fixed with the mounting panel of two sets of support slide bars, the inside push pedal that is provided with of feed box can slide from top to bottom, push pedal both sides are fixed with two sets of vertical sliding fit the guide lug of guide way, the slide bar vertically runs through the guide lug, just the spring of push-up guide lug is equipped with to the slide bar outside cover at mounting panel top.
Preferably, the inner side of the limiting piece is longitudinally provided with a plurality of groups of guide wheels for guiding the PCB to longitudinally slide, and a synchronous frame for supporting the front and rear synchronous sliding of the two assembly clamp assemblies is arranged below the sliding rail.
Preferably, the sliding rail is of a rectangular square frame structure extending longitudinally, two groups of vertical rods vertically connected to the top of the workbench are fixed on the front side and the rear side of the bottom of the sliding rail in parallel, a pushing cylinder for pulling the synchronous frame to slide longitudinally along the sliding rail is longitudinally arranged above the workbench, and a cylinder seat for installing the pushing cylinder is fixed on the top of the workbench.
Preferably, the clamping assembly comprises a constraint frame arranged above the sliding rail, the constraint frame is of a C-shaped structure with a downward opening, two groups of sliding blocks extending into the sliding rail and longitudinally sliding matched with the sliding rail are fixed at two ends of the bottom of the constraint frame, a polish rod transversely penetrates through the middle of the sliding block, the polish rod is in clearance fit with the sliding block, clamping plates clamped to the outer side edge of the PCB are longitudinally connected to the inner side end parts of the polish rod, and a pressure spring for keeping the clamping plates to tightly prop against the PCB is sleeved on the polish rod at the outer side of the sliding block.
Preferably, the polished rod is kept away from splint one end is fixed with the end cover, splint bottom is fixed with the rectangle square frame form transmission frame of vertical extension, synchronous frame bottom is fixed with synchronous motor, and this synchronous motor output upwards penetrates inside the transmission frame, just synchronous motor output is fixed with the rocking arm that the slope extends, both ends are fixed with two sets of vertical transfer lines that penetrate in two sets of transmission frames respectively around the rocking arm, just the transfer line with transmission frame sliding fit.
Preferably, the top of the restraint frame of the two assembly clamping assemblies is fixedly provided with a longitudinally extending rack, the top of the workbench outside the clamping assemblies is provided with a cleaning assembly, the cleaning assembly comprises two groups of L-shaped side brackets which are transversely symmetrically arranged on the top surface of the workbench, two groups of plate feeding motors are symmetrically fixed on the outer sides of the top ends of the two groups of side brackets, the output ends of the plate feeding motors extend to the upper part of the restraint frame, and the output ends of the plate feeding motors are fixedly meshed with driving gears which are meshed with the rack to drive the rack to longitudinally slide.
Preferably, the front sides of the top ends of the two groups of side brackets are transversely provided with cleaning shafts, two ends of each cleaning shaft are respectively in running fit with the two groups of side brackets, two groups of driven gears meshed with the driving gears are fixed at two ends of each cleaning shaft, and bristle rollers for rotatably cleaning the top surface of the PCB are coaxially fixed at the outer side of the middle part of each cleaning shaft.
Preferably, the feeding box is provided with the feeding subassembly that moves back, the feeding subassembly is fixed in respectively including two sets of mounting brackets of feeding box both sides, and this mounting bracket top is fixed with longitudinal extension to clamping subassembly top, and this longeron outside is provided with drive belt, just longeron both ends are fixed with two sets of rotatory belt pulleys of supporting drive belt, just the positive tip outside of longeron is fixed with the rotatory servo motor of drive belt pulley, and two sets of drive belt upper and lower sides parallel arrangement has two sets of main shafts, and two sets of drive belt upper and lower sides all are fixed with the rotation seat that supports the main shaft, and this rotation seat inboard is provided with the thrust bearing that supports the main shaft and rotate.
Preferably, the main shaft bottom is fixed with two sets of transversely arranged material grabbing arms, the material grabbing arms are of an electric telescopic rod structure, the telescopic ends of the material grabbing arms bottom are fixed with sucking discs used for adsorbing and grabbing the PCB, a blanking box is arranged in front of the feeding box, a supporting plate for installing the blanking box is fixedly arranged on the front of the feeding box bottom, a printing cover is arranged at the rear of the top of the workbench, and ink spray heads and UV curing lamps are transversely staggered in the printing cover.
The control method of the PCB text printing ink-jet printing system comprises the following steps:
a. when the PCB to be printed with characters is required to be supplied to a space between two assembly clamp assemblies for clamping and positioning materials, a rocker arm and a transmission rod are driven to rotate by a synchronous motor in advance, the transmission frame is matched with the transmission rod in a sliding manner, and therefore two groups of clamping plates are supported by two groups of transmission rods at two ends of the support arm to slide in a direction away from each other, and the distance between the two groups of clamping plates is enlarged to enlarge the discharging area of a clamping station;
b. the belt pulley is driven by a servo motor to rotate so as to drive the transmission belt to rotate, the rotating seat is utilized to support the two groups of spindles to rotate, a group of spindles close to the lower side is ensured to slide towards the direction close to the printing cover, a grabbing arm at the bottom of the lower spindle is utilized to match with the sucker to absorb and grasp the uppermost group of PCB boards in the feeding box when the PCB boards slide through the feeding box, so that the uppermost group of PCB boards slide out of the feeding box backwards along the limiting piece, the grabbing arm is utilized to continuously support the PCB boards to move between the two assembly clamp assemblies, and the sucker is released at the moment so as to place the PCB boards between the two groups of clamp plates;
c. releasing the supporting and locking state of the synchronous motor on the rocker arm, supporting the pressure spring through the sliding block to push the clamping plates to clamp the PCB, synchronously connecting the clamping plates of the two assembly clamping assemblies through the rocker arm matched with the transmission rod, ensuring that the displacement amounts of the clamping plates at two sides in the opening and clamping processes are consistent, ensuring that the PCB is always positioned at the central position of the clamping station, and driving the driving gear to rotate through the plate feeding motor so as to drive the rack through the driving gear, thereby driving the clamping assembly to integrally support the PCB to slide towards the rear printing station;
d. in the process that the driving gear rotates to drive the rack to drive the clamping assembly to integrally move backwards, the cleaning shaft which is meshed with the driving gear through the driven gear is utilized to rotate, so that the brush roll bottom side in the middle of the cleaning shaft rotates forwards in the process that the clamping assembly supports the PCB to slide backwards, and further the cleaning and dust removing actions are synchronously realized in the process that the PCB is clamped and moved to a rear printing station;
e. when the printed PCB board is subjected to character printing through the ink spray heads in the printing cover, the UV curing lamps which are distributed in a staggered manner with the ink spray heads are utilized to promote the ink to be cured on the solder resist green oil on the surface of the PCB board in real time, the adhesive force of the character ink on the surface of the PCB board is improved, when the printed PCB board is required to be withdrawn from the printing work, the PCB board is supported to slide to a clamping station through a clamping assembly by reversing a feeding motor, at the moment, two groups of spindles are supported to continuously rotate by a driving belt of a feeding and withdrawing assembly, then the printed PCB board is adsorbed and grabbed when one group of spindles rotate between the two groups of clamping assemblies, and then the printed PCB board is loosened when the group of spindles continuously rotate to the position of a blanking box following the driving belt, so that the concentrated process of a PCB board finished product in the blanking box is realized;
f. meanwhile, when the other group of spindles rotate above the feeding box, the grabbing arms are matched with the suckers to grab the PCB pushed upwards by the spring supporting push plate again, so that the PCB to be processed by ink jet is sucked by the group of spindles and moves to a clamping station between the two assembly clamping assemblies, the two groups of spindles of the feeding and retreating assemblies continuously rotate along with the driving belt, and continuous feeding and discharging actions of the PCB are completed by the group of mechanisms.
The beneficial effects are that: according to the invention, the feeding boxes capable of stacking a plurality of groups of PCB boards are arranged, so that continuous feeding of the PCB boards is realized by utilizing the two groups of main shafts of the continuously rotating feeding and discharging components to cooperate with the grabbing arms, continuous clamping and finished product removal actions of the PCB boards are realized by the feeding and discharging components extending between the two assembly clamping components, and automatic taking and placing of the PCB boards at the clamping stations are replaced by manual operation, so that the whole printing process is ensured to be free from manual touching of the PCB boards, uninterrupted printing can be realized by the printing system, and the equipment automation degree is higher;
the cleaning assembly is arranged above the clamping assembly for supporting the PCB to transfer to the printing station, and when the driving gear is used for rotating the driving rack to support the driving assembly to move towards the printing station at the rear, the driving gear is used for driving the cleaning shaft to synchronously rotate, so that the PCB fed into the printing station is synchronously cleaned and dedusted, the surface cleanliness of the PCB is improved, the product quality is improved, and the influence of dust on the character quality of PCB characters is avoided;
meanwhile, the ink spray heads and the UV curing lamps which are distributed in a staggered mode are arranged in the printing cover, so that the flowing time of the ink on the surface of the PCB is shortened, the ink curing is accelerated, and the clear effect of PCB characters is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view block diagram of the present invention;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is a schematic diagram of the overall structure of the present invention in a disassembled form;
FIG. 4 is a partially disassembled schematic illustration of the present invention;
FIG. 5 is a schematic perspective view of a clamping assembly of the present invention;
FIG. 6 is a schematic view of the feed tank of the present invention in a disassembled configuration;
FIG. 7 is a schematic view of the feed and withdrawal assembly of the present invention in a disassembled configuration;
FIG. 8 is a schematic perspective view of another aspect of the present invention;
fig. 9 is a schematic diagram illustrating another direction of the synchronization frame according to the present invention.
The reference numerals are explained as follows:
1. a work table; 101. a pushing cylinder; 102. a cylinder block; 2. a feed box; 201. a limiting piece; 202. a guide groove; 203. a mounting plate; 204. a slide bar; 205. a spring; 206. a push plate; 207. a guide lug; 208. a support plate; 209. a blanking box; 3. clamping the assembly; 301. a restraint frame; 301a, a rack; 302. a slide block; 303. a clamping plate; 303a, a transmission frame; 304. a polish rod; 304a, end caps; 304b, a compression spring; 4. a cleaning assembly; 401. a side bracket; 402. a plate feeding motor; 403. a drive gear; 404. cleaning the shaft; 405. a bristle roller; 5. a slide rail; 501. a vertical rod; 6. a synchronization frame; 601. a synchronous motor; 602. a rocker arm; 603. a transmission rod; 7. a feeding and discharging assembly; 701. a longitudinal beam; 702. a belt pulley; 703. a mounting frame; 704. a servo motor; 705. a drive belt; 706. a rotating seat; 707. a main shaft; 708. a material grabbing arm; 709. a suction cup; 8. a PCB board; 9. a print cover; 901. an ink jet head; 902. and a UV curing lamp.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.
Referring to fig. 1-9, the invention provides a printed ink-jet printing system for Printed Circuit Board (PCB) characters, which comprises a workbench 1 and a feed box 2, wherein the feed box 2 is arranged at the front side of the workbench 1, two groups of clamping components 3 for supporting a PCB 8 are transversely and symmetrically arranged above the workbench 1, the feed box 2 is used for continuously supplying the PCB 8 to a clamping station, and two groups of sliding rails 5 for supporting the clamping components 3 to longitudinally slide are fixed at the top of the workbench 1;
the feed box 2 is a hollow box body capable of accommodating the stacked PCB 8 and with an opening at the top, two groups of inverted L-shaped limiting sheets 201 are symmetrically fixed on two sides of the opening at the top of the feed box 2, two groups of guide grooves 202 extending vertically are transversely penetrated on two sides outside the feed box 2, two groups of guide grooves 202 are provided with vertically extending slide bars 204, two groups of mounting plates 203 supporting the slide bars 204 are fixed on the outer side of the feed box 2 at the bottom of the guide grooves 202, a push plate 206 capable of sliding vertically is arranged in the feed box 2, two groups of guide lugs 207 vertically sliding and matched with the guide grooves 202 are fixed on two sides of the push plate 206, the slide bars 204 vertically penetrate through the guide lugs 207, the guide lugs 207 and the push plate 206 are supported by the slide bars 204 matched with the guide grooves 202 to slide vertically, springs 205 pushing the guide lugs 207 upwards are sleeved on the outer sides of the slide bars 204 at the top of the mounting plates 203, the push plate 206 are lifted upwards by the springs 205, and the PCB 8 is pushed to be tightly pressed against the inner sides of the two groups of the limiting sheets 201 by the push plate 206.
As an alternative embodiment, the inner side of the limiting sheet 201 is longitudinally provided with a plurality of groups of guide wheels (not shown in the figure) for guiding the PCB 8 to longitudinally slide, the guide wheels are utilized to increase the smoothness and smoothness of the outward pushing process of the PCB 8 from between the two groups of limiting sheets 201, a synchronous frame 6 for supporting the front and back synchronous sliding of the two assembly clamp assemblies 3 is arranged below the sliding rail 5, the sliding rail 5 is of a longitudinally extending rectangular square frame structure, two groups of vertical rods 501 vertically connected to the top of the workbench 1 are parallelly fixed on the front and back sides of the bottom of the sliding rail 5, a pushing cylinder 101 for pulling the synchronous frame 6 to longitudinally slide along the sliding rail 5 is longitudinally arranged above the workbench 1, and a cylinder seat 102 for installing the pushing cylinder 101 is fixed on the top of the workbench 1;
the clamping assembly 3 comprises a constraint frame 301 arranged above a slide rail 5, the constraint frame 301 is of a C-shaped structure with a downward opening, two groups of sliding blocks 302 extending into the slide rail 5 and longitudinally sliding matched with the slide rail 5 are fixed at two ends of the bottom of the constraint frame 301, a polish rod 304 transversely penetrates through the middle of the sliding block 302, the polish rod 304 is in clearance fit with the sliding block 302, clamping plates 303 clamped to the outer side edges of a PCB (printed circuit board) 8 are longitudinally connected to the inner side ends of the two groups of polish rods 304, the clamping plates 303 can be ensured to transversely slide under the support of the polish rod 304 to realize the position adjustment of the clamping plates 303, a pressure spring 304b for keeping the clamping plates 303 tightly against the PCB 8 is sleeved on the polish rod 304 at the outer side of the sliding block 302, an end cover 304a is fixed at one end of the polish rod 304 far away from the clamping plates 303, the end cover 304a is used as a limiting structure to prevent the pressure spring 304b from pushing the clamping plates 303 to pull the polish rod 304 to be separated from the sliding block 302, the bottom of the clamping plate 303 is fixedly provided with a longitudinally extending rectangular square frame-shaped transmission frame 303a, the bottom of the synchronous frame 6 is fixedly provided with a synchronous motor 601, the output end of the synchronous motor 601 penetrates into the transmission frame 303a upwards, the output end of the synchronous motor 601 is fixedly provided with a obliquely extending rocker arm 602, the front end and the rear end of the rocker arm 602 extend obliquely towards the bottoms of the two groups of clamping plates 303 respectively, the two ends of the rocker arm 602 are fixedly provided with two groups of transmission rods 603 penetrating into the two groups of transmission frames 303a vertically respectively, and the transmission rods 603 are in sliding fit with the transmission frames 303a, so that in the process of driving the rocker arm 602 to rotate, the two groups of clamping plates 303 can be driven to synchronously approach or synchronously depart from each other through the transmission rods 603 extending into the transmission frames 303a from the ends of the rocker arm 602, and further, the PCB 8 with different widths clamped between the two groups of clamping plates 303 can be always located at the center positions, and the positioning and clamping actions of the PCB 8 with different widths are convenient to realize;
the top of the restraint frame 301 of the two assembly clamp assemblies 3 is fixed with a rack 301a extending longitudinally, the top of the workbench 1 outside the clamping assemblies 3 is provided with a cleaning assembly 4, the cleaning assembly 4 comprises two groups of L-shaped side brackets 401 which are transversely and symmetrically arranged on the top surface of the workbench 1, the side brackets 401 and the workbench 1 are fixed through bolts, the outer sides of the top ends of the two groups of side brackets 401 are symmetrically fixed with two groups of plate feeding motors 402, the output ends of the plate feeding motors 402 extend to the upper part of the restraint frame 301, the output ends of the plate feeding motors 402 are fixed with a driving gear 403 which is meshed with the rack 301a to drive the rack 301a to slide longitudinally, the front sides of the top ends of the two groups of side brackets 401 are transversely provided with a cleaning shaft 404, two ends of the cleaning shaft 404 are respectively in running fit with two groups of side brackets 401 through bearing seats, two groups of driven gears which are meshed with driving gears 403 are fixed at two ends of the cleaning shaft 404, and a bristle roller 405 for rotating and cleaning the top surface of the PCB 8 is coaxially fixed at the outer side of the middle part of the cleaning shaft 404, so that the cleaning shaft 404 is driven to rotate by the driving gears 403 in the process that the feeding motor 402 drives the rack 301a to drive the clamping assembly 3 to support the PCB 8 to translate towards a rear printing station, and the surface of the PCB 8 is cleaned by the bristle roller 405 coaxially fixed at the outer side of the cleaning shaft 404, thereby automatically realizing cleaning and dust removal in the feeding process of the PCB 8;
a feeding and discharging assembly 7 is arranged above the feed box 2, the feeding and discharging assembly 7 comprises two groups of mounting frames 703 which are respectively fixed on two sides of the feed box 2 through bolts, a longitudinal beam 701 which longitudinally extends to the upper side of the clamping assembly 3 is fixed at the top end of each mounting frame 703, a transmission belt 705 is arranged outside each longitudinal beam 701, two groups of pulleys 702 which support the rotation of the transmission belt 705 are fixed at two ends of each longitudinal beam 701, a servo motor 704 which drives the rotation of the pulley 702 is fixed at the outer side of the front end part of each longitudinal beam 701, two groups of transmission belts 705 are arranged on the upper side and the lower side of each transmission belt 705 in parallel, rotating seats 706 which support the rotation of the main shafts 707 are fixed on the upper side and the lower side of each transmission belt 705, thrust bearings which support the rotation of the main shafts 707 are arranged on the inner side of each rotating seat 706, two groups of gripping arms 708 which are transversely arranged are fixed on the bottom of the main shafts 707 are in an electric telescopic rod structure, and the telescopic end at the bottom of the grabbing arm 708 is fixedly provided with a sucker 709 for absorbing and grabbing the PCB 8, the grabbing arm 708 is matched with the sucker 709 to serve as a counterweight structure, when the main shaft 707 rotates to any position along with the transmission belt 705, the grabbing arm 708 and the sucker 709 are ensured to be in a vertical state under the action of self-weight downward pressing, so that continuous feeding and discharging actions of the PCB 8 are conveniently realized through the two groups of main shafts 707 matched with the grabbing arm 708, the sucker 709 and the feeding box 2, a feeding box 209 is arranged in front of the feeding box 2, a supporting plate 208 for installing the feeding box 209 is fixedly arranged at the bottom front of the feeding box 2, the printed PCB 8 is contained through the feeding box 209, a printing cover 9 is arranged behind the top of the workbench 1, ink spray heads 901 and UV curing lamps 902 are transversely arranged in the printing cover 9 in a staggered manner, the ink spray heads 901 and the UV curing lamps 902 are arranged in a staggered manner, thereby being convenient for promoting the immediate solidification of the printing ink sprayed on the solder mask green oil on the surface of the PCB 8, and improving the problem of the flowing of the printing ink caused by the solidification of the printing ink after the spraying of the existing equipment is completed and transferred into a solidification station.
The control method of the PCB text printing ink-jet printing system comprises the following steps:
a. when the printed circuit boards (8) needing to be printed with characters are placed in the material supply box (2) in a stacked state and the printed circuit boards (8) need to be supplied between the two assembly clamp assemblies (3) for clamping and positioning materials, the rocker arm (602) and the transmission rod (603) are driven to rotate by the synchronous motor (601) in advance, the transmission frame (303 a) is matched with the transmission rod (603) in a sliding way, so that the two groups of clamping plates (303) are supported by the two groups of transmission rods (603) at the two ends of the support arm to slide in a direction away from each other, the distance between the two groups of clamping plates (303) is enlarged, and the material discharging area of a clamping station is enlarged;
b. then, the belt pulley 702 is driven to rotate by the servo motor 704 to drive the transmission belt 705 to rotate, the rotating seat 706 is used for supporting the two groups of spindles 707 to rotate, the lower group of spindles 707 are ensured to slide towards the direction close to the printing cover 9, the grabbing arm 708 at the bottom of the lower spindle 707 is matched with the sucker 709 to suck and grab the uppermost group of PCBs 8 in the feed box 2 when sliding through the feed box 2, so that the uppermost group of PCBs 8 slide out of the feed box 2 backwards along the limiting sheet 201, the grabbing arm 708 is used for continuously supporting the PCBs 8 to move between the two groups of clamping assemblies 3, and the sucker 709 is loosened to place the PCBs 8 between the two groups of clamping plates 303;
c. the supporting and locking state of the rocker arm 602 by the synchronous motor 601 is released, at the moment, the clamping plates 303 are pushed to clamp the PCB 8 by the pressure springs 304b supported by the sliding blocks 302, the clamping plates 303 of the two assembly clamping assemblies 3 are synchronously connected by the rocker arm 602 and the transmission rod 603, the displacement of the clamping plates 303 at the two sides in the supporting and clamping processes is ensured to be consistent, the PCB 8 is always positioned at the central position of the clamping station, and then the driving gear 403 is driven to rotate by the plate feeding motor 402, so that the rack 301a is driven by the driving gear 403 to drive the clamping assemblies 3 to integrally support the PCB 8 to slide towards the rear printing station;
d. in the process that the driving gear 403 rotates to drive the rack 301a to drive the clamping assembly 3 to integrally move backwards, the cleaning shaft 404 which is meshed with the driving gear 403 through the driven gear is utilized to rotate, so that the bottom side of the brushing roller 405 in the middle of the cleaning shaft 404 rotates forwards in the process that the clamping assembly 3 supports the PCB 8 to slide backwards, and then the cleaning and dust removing actions are synchronously realized in the process that the PCB 8 is clamped and moves towards a rear printing station;
e. when the printed PCB 8 is printed by the ink spray heads 901 in the printing cover 9, the UV curing lamps 902 which are distributed in a staggered manner with the ink spray heads 901 are utilized to promote the ink to be cured on the solder resist green oil on the surface of the PCB 8 in real time, the adhesive force of the character ink on the surface of the PCB 8 is improved, when the printed PCB 8 is required to exit the printing work, the PCB 8 is supported by the clamping assembly 3 to slide to the clamping station by reversing the feeding motor 402, at the moment, the two groups of main shafts 707 are supported by the driving belt 705 of the feeding and reversing assembly 7 to rotate continuously, then when one group of main shafts 707 rotate between the two groups of clamping assemblies 3, the printed PCB 8 is adsorbed and grabbed, and then when the group of main shafts 707 follow the driving belt 705 to rotate continuously to the position of the blanking box 209, the printed PCB 8 is loosened, so that the finished PCB 8 is concentrated in the blanking box 209 is realized;
f. meanwhile, when the other group of spindles 707 rotate above the feed box 2, the grabbing arms 708 are used for matching with the suckers 709 to grab the PCB 8 pushed upwards by the push plate 206 supported by the springs 205 again, so that the PCB 8 to be processed by ink jet is sucked by the group of spindles 707 and moves to a clamping station between the two assembly clamping assemblies 3, the two groups of spindles 707 of the feeding and discharging assemblies 7 continuously rotate along with the transmission belt 705, and continuous feeding and discharging actions of the PCB 8 are completed by one group of mechanisms.
By arranging the feeding box 2 capable of stacking a plurality of groups of PCB 8, continuous feeding of the PCB 8 is realized by utilizing the two groups of spindles 707 of the continuously rotating feeding and discharging components 7 to cooperate with the grabbing arms 708, so that continuous clamping and finished product removal actions of the PCB 8 are realized by the feeding and discharging components 7 extending between the two assembly clamping components 3, automatic taking and placing of the PCB 8 at a clamping station are replaced by manual operation, the whole printing process is ensured to be free from manual touching of the PCB 8, uninterrupted printing can be realized by the printing system, and the equipment automation degree is higher;
the cleaning assembly 4 is arranged above the clamping assembly 3 for supporting the PCB 8 to transfer to the printing station, and when the driving gear 403 is used for rotating the driving rack 301a to support the driving assembly to move to the printing station at the rear, the driving gear 403 is used for driving the cleaning shaft 404 to synchronously rotate, so that the PCB 8 fed into the printing station is synchronously cleaned and dedusted, the surface cleanliness of the PCB 8 is improved, the product quality is improved, and the influence of dust on the character quality of PCB characters is avoided;
meanwhile, the ink spray heads 901 and the UV curing lamps 902 which are distributed in a staggered mode are arranged in the printing cover 9, so that the flowing time of ink on the surface of the PCB 8 is shortened, the ink curing is accelerated, and the clear effect of PCB characters is improved.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (2)

1. A PCB text printing ink-jet printing system is characterized in that: the automatic feeding device comprises a workbench (1) and a feeding box (2), wherein the feeding box (2) is arranged on the front side of the workbench (1), two groups of clamping assemblies (3) for supporting a PCB (printed circuit board) (8) are transversely and symmetrically arranged above the workbench (1), and two groups of sliding rails (5) for supporting the clamping assemblies (3) to longitudinally slide are fixed on the top of the workbench (1);
the feeding box (2) is a hollow box body with an opening at the top, which can accommodate stacking of PCB (8), two groups of inverted L-shaped limiting sheets (201) are symmetrically fixed at two sides of the opening at the top of the feeding box (2), two groups of guide grooves (202) extending vertically transversely penetrate through the two outer sides of the feeding box (2), sliding rods (204) extending vertically are arranged outside the two groups of guide grooves (202), two groups of mounting plates (203) supporting the sliding rods (204) are fixed at the outer sides of the feeding box (2) at the bottom of the guide grooves (202), pushing plates (206) capable of sliding up and down are arranged inside the feeding box (2), two groups of guide lugs (207) of the guide grooves (202) are fixed at two sides of the pushing plates (206), the sliding rods (204) vertically penetrate through the guide lugs (207), and springs (205) pushing the guide lugs (207) upwards are sleeved outside the sliding rods (204) at the top of the mounting plates (203).
The utility model discloses a polish rod fixing device, including a limit piece (201), a slide rail (5), a plurality of groups of guide wheels guiding a PCB board (8) to longitudinally slide are longitudinally arranged on the inner side of the limit piece (201), a synchronous frame (6) supporting two assembly clamp components (3) to synchronously slide back and forth is arranged below the slide rail (5), the slide rail (5) is of a longitudinally extending rectangular square frame structure, two groups of vertical sliding blocks (501) vertically connected to the top of the workbench (1) are parallelly fixed on the front and back sides of the bottom of the slide rail (5), a pushing cylinder (101) dragging the synchronous frame (6) to longitudinally slide along the slide rail (5) is longitudinally arranged above the workbench (1), a cylinder seat (102) for installing the pushing cylinder (101) is fixed on the top of the workbench (1), the clamp components (3) include a restraint frame (301) arranged above the slide rail (5), the restraint frame (301) is of a C-shaped structure with a downward opening, two groups of sliding blocks (302) extending into the interior of the slide rail (5) and longitudinally sliding matched with the slide rail (304), a middle part (302) is longitudinally matched with the slide rail (304), two groups of slide blocks (304) are connected with the end parts (8) of the polish rod fixing device, a pressure spring (304 b) for keeping the clamping plate (303) against the PCB (8) is sleeved on the polish rod (304) at the outer side of the sliding block (302);
an end cover (304 a) is fixed at one end of the polish rod (304) far away from the clamping plate (303), a rectangular square frame-shaped transmission frame (303 a) extending longitudinally is fixed at the bottom of the clamping plate (303), a synchronous motor (601) is fixed at the bottom of the synchronous frame (6), the output end of the synchronous motor (601) penetrates into the transmission frame (303 a), an obliquely extending rocker arm (602) is fixed at the output end of the synchronous motor (601), two groups of transmission rods (603) penetrating into the two groups of transmission frames (303 a) vertically are fixed at the front end and the rear end of the rocker arm (602), the transmission rods (603) are in sliding fit with the transmission frame (303 a), racks (301 a) extending longitudinally are fixed at the tops of the restraint frame (301) of the two assembly clamping assemblies (3), a cleaning assembly (4) is arranged at the top of the workbench (1) at the outer side of the clamping assembly (3), the cleaning assembly (4) comprises two groups of L-shaped side brackets (401) which are transversely and symmetrically arranged on the top surface of the workbench (1), two groups of side brackets (401) penetrate into the two groups of transmission frames (401) symmetrically arranged on the top surface of the workbench (1), the two groups of the motor (401) are symmetrically arranged on the outer side of the restraint frame (301) and extend into the restraint frame (402), the output end of the plate feeding motor (402) is fixedly provided with a driving gear (403) which is meshed with the rack (301 a) to drive the rack (301 a) to longitudinally slide;
the front sides of the top ends of the two groups of side brackets (401) are transversely provided with cleaning shafts (404), two ends of the cleaning shafts (404) are respectively in running fit with the two groups of side brackets (401), two groups of driven gears meshed with the driving gears (403) are fixed at two ends of the cleaning shafts (404), a bristle roller (405) used for rotating and cleaning the top surface of a PCB (8) is coaxially fixed at the outer side of the middle part of the cleaning shafts (404), a feeding and withdrawing assembly (7) is arranged above the feeding box (2), the feeding and withdrawing assembly (7) comprises two groups of mounting frames (703) respectively fixed at two sides of the feeding box (2), longitudinal beams (701) longitudinally extending to the upper side of the clamping assembly (3) are fixed at the top ends of the mounting frames (703), driving belts (705) are arranged at the outer sides of the longitudinal beams (701), two groups of supporting driving belts (702) are fixed at two ends of the longitudinal beams (701), a servo motor (704) used for rotating and driving the front sides of the longitudinal beams (702) are fixed at the outer sides of the front sides of the longitudinal beams (705), a main shaft (706) is rotatably supported at the upper side and lower side of the two groups of the driving belts (705), a main shaft (706) is rotatably supported at the lower side of the main shaft (707), the utility model discloses a PCB board that includes main shaft (707), main shaft (707) bottom is fixed with two sets of transversely arranged grabs material arm (708), and should grab material arm (708) and be electric telescopic handle structure, just grab flexible end in material arm (708) bottom and be fixed with sucking disc (709) that are used for adsorbing grabbing PCB board (8), feed box (2) the place ahead is provided with feed box (209), just feed box (2) bottom openly is fixed with backup pad (208) of installing feed box (209), workstation (1) top rear is provided with prints cover (9), should print inside transversely crisscross printing ink shower nozzle (901) and UV curing lamp (902) that are provided with of cover (9).
2. The control method of a PCB text printing ink jet printing system according to claim 1, comprising the steps of:
a. when the PCB (8) needing to be printed with characters is placed in a material feeding box (2) in a stacked state and the PCB (8) needs to be fed between two assembly clamping assemblies (3) for material clamping and positioning, a synchronous motor (601) is used for driving a rocker arm (602) and a transmission rod (603) to rotate in advance, the transmission rod (603) is used for being matched with a transmission frame (303 a) in a sliding mode, and accordingly two groups of clamping plates (303) are supported to slide in a direction away from each other by the aid of two groups of transmission rods (603) at two ends of the support arm, and the distance between the two groups of clamping plates (303) is enlarged, so that the material discharging area of a clamping station is enlarged;
b. then, a belt pulley (702) is driven to rotate through a servo motor (704) so as to drive a transmission belt (705) to rotate, a rotating seat (706) is utilized to support two groups of spindles (707) to rotate, a group of spindles (707) close to the lower part slide towards the direction close to a printing cover (9), a grabbing arm (708) at the bottom of the lower spindle (707) is utilized to be matched with a sucker (709) to suck and grab a group of PCB boards (8) at the uppermost part in the feeding box (2) when the lower spindle (707) slides through the feeding box (2), so that the uppermost group of PCB boards (8) slide out of the feeding box (2) backwards along a limiting piece (201), the grabbing arm (708) is utilized to continuously support the PCB boards (8) to move between two groups of clamping assemblies (3), and the sucker (709) is loosened at the moment so that the PCB boards (8) are placed between two groups of clamping plates (303);
c. the supporting and locking state of the rocker arm (602) is relieved by the synchronous motor (601), at the moment, the clamping plates (303) are pushed to clamp the PCB (8) by the supporting pressure spring (304 b) of the sliding block (302), the clamping plates (303) of the two assembly clamping assemblies (3) are synchronously connected by the rocker arm (602) in cooperation with the transmission rod (603), the displacement of the clamping plates (303) at the two sides in the process of expanding and clamping is ensured to be consistent, so that the PCB (8) is always positioned at the central position of a clamping station, and then the driving gear (403) is driven to rotate by the plate feeding motor (402), so that the rack (301 a) is driven by the driving gear (403) to drive the clamping assemblies (3) to integrally support the PCB (8) to slide towards the rear printing station;
d. in the process that the driving gear (403) rotates to drive the rack (301 a) to drive the clamping assembly (3) to integrally move backwards, a cleaning shaft (404) which is meshed with the driving gear (403) through the driven gear is utilized to rotate, so that in the process that the clamping assembly (3) supports the PCB (8) to slide backwards, the bottom side of a bristle roller (405) in the middle of the cleaning shaft (404) rotates forwards, and then the cleaning and dust removing actions are synchronously realized in the process that the PCB (8) is clamped and moves to a printing station at the rear;
e. when the printed PCB (8) is printed by the ink spray heads (901) in the printing cover (9), the UV curing lamps (902) which are distributed in a staggered manner with the ink spray heads (901) are utilized to promote the ink to be cured on the solder resist green oil on the surface of the PCB (8) in real time, the adhesive force of the character ink on the surface of the PCB (8) is improved, when the printed PCB (8) is required to be withdrawn from printing work, the PCB (8) is supported to slide to a clamping station through the clamping assembly (3) by reversing the feeding motor (402), at the moment, the two groups of spindles (707) are supported to rotate continuously by the driving belt (705) of the feeding and withdrawing assembly (7), then the printed PCB (8) is adsorbed and grabbed when one group of spindles (707) rotates between the two assembly clamping assemblies (3), and then the printed PCB (8) is loosened when the group of spindles (707) follow the driving belt (705) to rotate continuously to the position of the blanking box (209), and the PCB (8) is finished product is concentrated in the blanking box (209);
f. meanwhile, when the other group of spindles (707) rotates to the upper part of the feeding box (2), the grabbing arm (708) is used for matching with the sucker (709) to grab the PCB (8) pushed upwards by the push plate (206) supported by the spring (205) again, so that the PCB (8) to be processed by ink jet is sucked by the group of spindles (707) and moves to a clamping station between the two assembly clamping assemblies (3), the two groups of spindles (707) of the feeding and retreating assemblies (7) continuously rotate along with the transmission belt (705), and continuous feeding and discharging actions of the PCB (8) are completed by one group of mechanisms.
CN202310588396.5A 2023-05-24 2023-05-24 PCB text printing ink-jet printing system and control method thereof Active CN116423985B (en)

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