CN110466242B - Automatic silk screen printing production line - Google Patents
Automatic silk screen printing production line Download PDFInfo
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- CN110466242B CN110466242B CN201810454504.9A CN201810454504A CN110466242B CN 110466242 B CN110466242 B CN 110466242B CN 201810454504 A CN201810454504 A CN 201810454504A CN 110466242 B CN110466242 B CN 110466242B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/08—Machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/14—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
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Abstract
The invention provides a full-automatic silk-screen production line which comprises a feeding device, a silk-screen device, a substrate heat treatment device, a discharging device, a PLC control device, a plurality of manipulators and an electric control device. The feeding device, the silk screen printing device, the substrate heat treatment device and the discharging device are sequentially connected, and the PLC control device, the manipulator and the electrical control device are electrically connected with the feeding device, the silk screen printing device, the substrate heat treatment device and the discharging device. The invention adopts a direct contact type substrate heat treatment device to solidify the ink. The energy consumption is lower, the curing time is shorter, and the efficiency is higher.
Description
Technical Field
The invention relates to the field of printing, in particular to the field of glass product silk screen printing, and particularly relates to a full-automatic silk screen printing production line.
Background
The screen printing production equipment is a machine for printing characters and images, and modern printing equipment generally comprises mechanisms such as plate-setting, inking, impressing and the like. Silk-screen printing refers to silk-screen printing, which belongs to stencil printing and transfers ink to the surface of a product through pressure so as to achieve an ideal printing effect. The working principle of silk screen printing is as follows: the characters and images to be printed are made into printing plate, then it is mounted on the printing machine, then the printing ink is coated on the position where the characters and images are placed on the printing plate by means of manual or printing machine, then it is directly or indirectly transferred onto the glass or other printing material (for example paper, textile, metal plate, plastics, leather, wood plate and ceramic) so as to reproduce the printed matter identical to that of printing plate.
The traditional silk-screen process is basically carried out by manual operation, and the product is manually positioned and then silk-screen operation is carried out. The manual operation needs more time, and manufacturing cost is higher, and machining efficiency is low. In addition, for products with high process requirements on cleanliness such as similar glass, artificial pollution is easily caused to the products, manual positioning can also cause inaccurate positioning, printed patterns are easy to be skewed or misplaced, and particularly, for glass products such as touch screens with high printing precision requirements, the yield is very low. In addition, most of silk-screen printing ink contains toxic solvent, and in the process of artificial silk-screen printing, the solvent may directly contact with the skin or volatilize to enter the body, so that the skin is cracked, enters blood vessels, causes chronic poisoning, and even causes serious pathological changes. Therefore, manual work has many drawbacks.
Aiming at the defects of manual operation, some semi-automatic silk-screen production equipment or production lines exist at present, if a conveyor belt is used for conveying products to each station and then the operation is carried out, but the condition that the products deviate from preset positions is easily caused in the process of conveying the products by the conveyor belt, the products still need to be manually positioned again, and the efficiency is not high.
In order to ensure that the printing ink on the product can be cured well after the silk-screen printing process is finished, currently, baking equipment such as a tunnel furnace or an oven is arranged outside semi-automatic silk-screen printing production equipment for conveying the product through a conveyor belt, and the printing and baking processes are carried out separately. Specifically, after the ink is silk-screened on the product, the product needs to be transferred to a baking device for baking. By adopting the method for baking and curing the ink, the product can be continuously and uniformly heated, the curing effect is good, but in most cases, a plurality of patterns are required to be printed on the product. With the increase of the printing times, the printing ink needs to be transferred from the screen printing platform to the baking equipment for many times, and then transferred from the baking equipment to the screen printing platform. At this time, a plurality of additional conveying belts are needed, which is not favorable for the utilization of the production space, affects the production environment, and also needs to consume a large amount of manpower, material resources and time, and even causes the problems of product damage or material mixing and the like. In addition, the tunnel furnace is used for baking in a non-direct contact mode, so that the time is long, a large amount of electric power needs to be consumed, unnecessary waste is caused, the working efficiency is low, and the cost is high.
Many defects are generated in the screen printing production based on manual operation and semi-automatic operation, and a full-automatic screen printing production line which can fully utilize space, save manpower and material resources and improve production efficiency and yield is needed to be developed.
Disclosure of Invention
The invention aims to efficiently complete a plurality of processes of feeding, silk-screen printing, heat treatment and the like in silk-screen printing production by utilizing a highly-automatic silk-screen printing device and a production line, achieve the effects of good printing quality and high efficiency of products, and simultaneously reduce the pollution of the products to the environment to the minimum.
In order to solve the above technical problems, the present invention is implemented by the following technical solutions. The technical scheme of the invention is to provide the full-automatic silk-screen production equipment and the production line which do not need to separately arrange baking equipment such as a tunnel furnace or an oven outside the silk-screen production line and do not need to arrange a conveyor belt to convey and transfer products, and a substrate heat treatment device is used for replacing the baking equipment. When the printing ink solidifies, the base plate heat treatment device can make the product continuously and uniformly heated, has the uniform heating effect equal to baking equipment such as a tunnel furnace and the like, can not influence the printing ink solidification quality, and simultaneously, the base plate heat treatment device has lower energy consumption, shorter solidification time and higher efficiency.
The full-automatic silk-screen production line comprises a feeding device, a silk-screen device, a substrate heat treatment device, a discharging device, a PLC control device, a plurality of manipulators and an electric control device. Loading attachment, silk screen printing device, base plate heat treatment device and unloader connect gradually, PLC controlling device, manipulator and electric control device and loading attachment, silk screen printing device, base plate heat treatment device, unloader electrical connection, base plate heat treatment device include gridion main part, generate heat mechanism and heat-conducting plate, the mechanism that generates heat sets up in gridion main part top, the heat-conducting plate set up in the mechanism top generates heat. The production programs of all devices and the movement program of the manipulator are set in the PLC control device, so that the products enter the screen printing device of the screen printing production line through the feeding device according to the programs. And after the silk-screen processing is finished, the product is immediately transferred from the silk-screen device to the substrate heat treatment device without a conveying belt. And when the heat treatment of the product meets the ink curing quality requirement of the product, the product enters a blanking device, and the product is transferred from the automatic silk-screen printing production line through the blanking device.
The feeding device comprises a feeding rack and a feeding mechanism, wherein the feeding mechanism is arranged on the feeding rack, and when a product enters the feeding device, the feeding mechanism bears the product and transmits the product to the screen printing device, and then the product is transferred to a screen printing platform of the screen printing device through a manipulator.
The screen printing device comprises a screen printing rack, a screen printing platform, a connecting mechanism, a screen printing sliding table and a screen printing scraper, wherein the screen printing platform and the connecting mechanism are arranged on the screen printing rack. The screen printing sliding table is arranged on the connecting mechanism and is integrated with the screen printing frame through the connecting mechanism. The upper end of the silk-screen scraper is arranged on the silk-screen sliding table. And during screen printing production, the screen printing scraper slides back and forth on the screen printing platform to complete screen printing operation.
The blanking device comprises a blanking rack and a material receiving mechanism, wherein the material receiving mechanism is arranged on the blanking rack, and when a product enters the blanking device, the material receiving mechanism bears the product and moves out of a silk-screen production line.
The invention also provides a silk-screen method, which comprises the following steps:
s1, because the ink curing method in the silk-screen method of the invention is a direct contact heating method of the substrate heat treatment device, the heating time is short, if the ink is not treated, bubbles can be generated in the ink during heating, and the ink curing effect is influenced, therefore, the invention is different from the first step of the common silk-screen production method, the first step of the invention is that the ink used for the silk-screen procedure is firstly vacuumized by using a defoaming machine, and then the vacuumized ink is injected into the silk-screen mesh printing plate;
step S2, conveying the product to a feeding device, carrying the product by a feeding mechanism of the feeding device and transmitting the product to a screen printing device, and controlling an automatic control manipulator according to a set program by a PLC control device to transfer the product to a screen printing platform of the screen printing device;
step S3, after the product enters the screen printing platform, a positioning mechanism on the screen printing platform compares the product with a preset position for accurate alignment treatment, and after the accurate positioning is complete, the product slides back and forth on a screen printing bedplate through a screen printing scraper of the equipment, so that the printing ink is printed on the product;
step S4, after the silk-screen process is completed, the manipulator transfers the product from the silk-screen platform to a heat-conducting plate of a heat treatment device, the heat-conducting plate continuously conducts heat to the product due to the temperature difference between the product and the heat-conducting plate, when the temperature of the product rises to a preset temperature, the heat-conducting plate is controlled by a thermostatic valve to enter a constant temperature state, the heat-conducting plate and the product are continuously in a constant temperature state, the heat treatment time is 3-5 minutes, and after the heat treatment is finished, the manipulator transfers the product to a blanking device;
and step S5, transferring the product out of the silk screen production line through a material receiving mechanism on the blanking device, and immediately finishing the whole automatic silk screen production operation.
The invention provides a full-automatic silk-screen production line which does not need to be separately provided with baking equipment such as a tunnel furnace and the like outside a silk-screen production line and does not need to be provided with a conveyor belt for conveying and transferring products, and a substrate heat treatment device is used for replacing the baking equipment. Utilize high automatic silk screen printing device and production line high efficiency to accomplish many processes such as material loading, silk screen printing, curing printing ink and unloading of silk screen printing production, reach that the product printing is more accurate, the power consumption is lower, curing time is shorter, efficiency is higher, also reduces to minimumly to the pollution of environment simultaneously.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a front view of an automatic screen printing line of the present invention;
FIG. 2 is a top view of the automatic screen printing line of the present invention;
FIG. 3 is a schematic view of a loading device of the present invention;
FIG. 4 is a schematic view of a screen printing apparatus of the present invention;
FIG. 5 is a schematic view of a heat treatment apparatus of the present invention;
FIG. 6 is a schematic view of a blanking device of the present invention;
FIG. 7 is a schematic view of a cooling apparatus of the present invention;
fig. 8 is a schematic view of the positioning mechanism of the present invention.
Reference numerals are as follows:
1-feeding device, 2-silk-screen printing device, 3-substrate heat treatment device, 4-cooling device and 5-blanking
The device comprises a device, 6-mechanical arms and 7-PLC control devices;
11-a feeding rack, 12-a lifting cylinder, 13-a lifting mechanism, 14-a feeding mechanism and 15-a disc collecting mechanism;
21-a screen printing frame, 22-a screen printing platform, 23-a connecting mechanism, 24-a screen printing sliding table, 25-a positioning mechanism, 251-a baffle plate and 252-a guide rod;
31-a grill body, 32-a heating mechanism, 33-a heat conducting plate, 34-a thermostatic valve;
41-cooling box main body, 42-sheet taking mechanism and 43-sheet receiving mechanism;
51-a blanking frame, 54-a material receiving mechanism and 55-a disc feeding mechanism.
Detailed Description
In order to clearly explain the automatic silk-screen device and the silk-screen production line provided by the invention, the following detailed explanation is made by combining the attached drawings of the specification and the text description of the embodiment.
As shown in fig. 1-2, the full-automatic silk-screen production line of the invention comprises a feeding device 1, a silk-screen device 2, a substrate heat treatment device 3, a blanking device 5, a PLC control device 7, a manipulator 6 and an electrical control device. The feeding device 1, the silk screen printing device 2, the substrate heat treatment device 3 and the blanking device 5 are sequentially connected, and the PLC control device 7, the manipulator 6, the electrical control device are electrically connected with the feeding device 1, the silk screen printing device 2, the substrate heat treatment device 3 and the blanking device 5. The production procedures of all devices and the movement procedure of the manipulator 6 are arranged in the PLC control device 7, so that products enter the silk screen printing device 2 of the silk screen printing production line through the feeding device 1 according to the procedures, and are immediately transferred to the substrate heat treatment device 3 without a conveyor belt after silk screen printing processing is finished. And when the ink on the product is heated and cured to meet the curing quality requirement of the product, the manipulator 6 transfers the product to the blanking device 5, and then the product is transferred from the automatic silk-screen printing production line through the blanking device 5.
In the preferred technical scheme, when a plurality of patterns are required to be silk-screened on a product, the full-automatic silk-screening production line can be additionally provided with M silk-screening devices 2 and substrate heat treatment devices 3(M is an integer greater than or equal to 1) according to the silk-screening requirement, and meanwhile, a conveying belt is not required to be additionally added.
In the preferred technical scheme, when the time consumed by the heat treatment and the silk-screen printing procedure is inconsistent, the full-automatic silk-screen printing production line can also be provided with a plurality of cooling devices 4 at the rear section of the substrate heat treatment device 3 according to the silk-screen printing requirement, and the cooling devices 4 can meet the coordination and stability of the automatic operation of the whole production line.
As shown in fig. 6, the cooling device 4 includes a cooling box main body 41, a sheet receiving mechanism 43, and a sheet taking mechanism 42, the sheet receiving mechanism 43 is disposed on the side of the cooling box main body 41 close to the substrate heat treatment device 3, and the sheet taking mechanism 42 is disposed on the side of the cooling box main body 41 close to the blanking device 5.
In a preferred embodiment, the sheet receiving mechanism 43 is a plate having a plurality of notches on the same horizontal plane, the sheet taking mechanism 42 is a plurality of rods disposed on the same horizontal plane, and a traversing mechanism is connected to a lower end of the sheet receiving mechanism 42, so that when a product needs to be transferred from the sheet receiving mechanism 43 to the sheet taking mechanism 42, the sheet taking mechanism 42 can traverse the notches inserted into the sheet receiving mechanism 43 to transfer the product to the sheet taking mechanism 42.
In a preferred technical solution, the number of the rod pieces on the same horizontal plane is 2, and the number of the notches of the splicing mechanism 43 is 2 correspondingly.
In a preferred technical scheme, the cooling device 4 may further include a plurality of plates having central points on the same vertical line, the same size, and being parallel to each other, as the sheet receiving mechanisms 43, the plates are arranged in accordance with a time sequence for receiving the products and are all connected to the same lifting mechanism 13, and each plate can be lifted by the lifting mechanism 13, so that the product with the longest cooling time and the sheet taking mechanism 42 maintain the same horizontal plane, thereby ensuring that the product with the longest cooling time among all the products is taken away every time the sheet is taken.
In a preferred embodiment, the sheet taking mechanism 42 is also connected to a lifting mechanism 13, and the sheet taking mechanism 42 can be lifted and lowered by the lifting mechanism 13.
In a preferred embodiment, the sheet receiving mechanism 43 is a plurality of rod members disposed on the same horizontal plane, the sheet taking mechanism 42 is a plate member having a plurality of notches on the same horizontal plane, and a traversing mechanism is connected to a lower end of the sheet receiving mechanism, so that when a product needs to be transferred from the sheet receiving mechanism 43 to the sheet taking mechanism 42, the sheet taking mechanism 42 can move transversely, the sheet receiving mechanism 43 is inserted into the notches of the sheet taking mechanism 42, and similarly, the product is transferred to the sheet taking mechanism 42.
In a preferred technical scheme, the number of the rod pieces on the same horizontal plane is 2, and the number of the gaps is 2 correspondingly.
In the preferred technical scheme, the cooling device 4 may further include a plurality of rod members having end points on the same vertical line and being parallel to each other as the sheet receiving mechanism 43, the rod members are arranged according to the time sequence of receiving the products and are all connected to the same lifting mechanism 13, and each rod member can be lifted by the lifting mechanism 13, so that the product with the longest cooling time and the plate member maintain the same horizontal plane, thereby ensuring that the product with the longest cooling time is taken away from all the products each time.
In a preferred technical solution, the sheet taking mechanism 42 is also connected to a lifting mechanism 13, and the sheet taking mechanism 42 can be lifted by the lifting mechanism 13.
In the preferred technical scheme, a sucker structure is connected below the manipulator 6, and the manipulator 6 sucks a product through the sucker structure and then transfers the product to the next operation position.
As shown in fig. 2, the feeding device 1 of the present invention includes a feeding rack 11 and a feeding mechanism 14, wherein the feeding mechanism 14 is disposed at a front section of the feeding rack 11, and when a product enters the feeding device 1, the feeding mechanism 14 carries the product and transmits the product to the screen printing device 2, and then the product is transferred to a screen printing platform 22 of the screen printing device 2 by a manipulator 6.
As shown in fig. 2, in a preferred technical solution, the feeding device 1 further includes a tray collecting mechanism 15, when a product is loaded on the tray and enters the feeding device 1, the manipulator 6 first takes the product off the tray, then puts the product into the screen printing device 2, and at the same time, the tray is transferred to the tray collecting mechanism 15, so that the feeding and screen printing operations of a next product are not hindered.
As shown in fig. 3, in a preferred technical solution, the feeding device 1 further includes a lifting mechanism 13 and a lifting cylinder 12, when a plurality of products are loaded and stacked on a plurality of trays and enter the feeding device 1, the PLC control device 7 controls the lifting cylinder 12 to lift and lower the lifting mechanism 13, so as to ensure that each tray loaded with the products can enter the feeding device 1 stably in sequence.
As shown in fig. 4, the screen printing device 2 of the present invention includes a screen printing frame 21, a screen printing platform 22, a connecting mechanism 23, a screen printing sliding table 24 and a screen printing scraper, wherein the screen printing platform 22 and the connecting mechanism 23 are disposed on the screen printing frame 21, the screen printing sliding table 24 is disposed on the connecting mechanism 23, and is integrated with the screen printing frame 21 through the connecting mechanism 23, the upper end of the screen printing scraper is disposed on the screen printing sliding table 24, and the lower end of the cutting edge thereof is in separated contact with the screen printing platform 22, and when the screen printing is produced, the screen printing scraper slides back and forth on the screen printing platform 22 to complete the screen printing operation.
In the preferred technical scheme, the silk screen printing scraper includes knife rest, scraper connecting piece and cutting edge, the knife rest has the spout, the activity of scraper connecting piece set up in on the spout, the cutting edge passes through the scraper connecting piece sets up in the knife rest below, the scraper connecting piece can also have the snap close piece, the scraper connecting piece can drive the cutting edge slides extremely arbitrary position in the spout, and will the cutting edge locks in this position.
In a preferred technical scheme, the silk-screen scraper is provided with 2 cutting edges and 2 scraper connecting pieces, and the cutting edges can be arranged on the same extension line at intervals; the knife blades can also be respectively arranged on two parallel extension lines, and the intervals between the knife blades can be flexibly arranged in a sliding way.
In a preferred technical scheme, the silk-screen scraper is provided with N cutting edges (N is an integer greater than 2), the N cutting edges can be arranged on the same extension line at intervals, and the intervals between the cutting edges can be flexibly arranged through sliding; or can be respectively arranged on N parallel extension lines; the interval between the blades can be flexibly arranged through sliding. The two parallel lines can be arranged on the same extension line or on a plurality of parallel lines respectively.
As shown in fig. 8, in a preferred technical solution, the screen printing platform 22 is further provided with a positioning mechanism 25, the positioning mechanism 25 includes 4 guide rods 252 including a front guide rod 252, a rear guide rod 252, a left guide rod 252 and a right guide rod 252, the guide rods 252 are provided with a blocking piece 251 perpendicular to a horizontal plane direction, the front guide rod 252 and the rear guide rod 252 are located on a same extension line, the left guide rod 252 and the right guide rod 252 are also located on a same extension line, the extension lines of the front guide rod 252 and the rear guide rod 252 are perpendicularly intersected with the extension lines of the left guide rod 252 and the right guide rod 252 on a same horizontal plane, each guide rod 252 in mutually perpendicular directions can slide and one is fixedly arranged, the PLC control device 7 controls the sliding of the slidable guide rods 252 to slide, the blocking pieces 251 of the guide rods 252 are used to drive a product to move, the product is pushed to a screen printing area, and accurate positioning of a screen printing position of the product is achieved.
In a preferred technical scheme, the front, rear, left and right 4 guide rods 252 are all slidable guide rods 252.
In a preferred technical scheme, the PLC control device 7 controls to slide 2 mutually perpendicular guide rods 252 first, and then slide another 2 mutually perpendicular guide rods 252.
In a preferred technical solution, the positioning mechanism 25 includes 6 guide rods 252 in the front, back, left, and right directions, which may be front, back, 4 guide rods 252, and left, right 2 guide rods 252, and the front, back 4 guide rods 252 are arranged on 2 parallel extension lines two by two.
In the preferred technical scheme, only the front and rear 4 guide rods 252 can slide, and the other 2 guide rods 252 cannot move, when a product enters the upper part of the positioning mechanism, if the product is in an inclined state relative to a preset position, the front and rear 4 guide rods 252 slide, the product is driven to move by the blocking piece, the product can be corrected to a correct position, and the printing accuracy of the product is improved;
in a preferred technical aspect, 6 guide rods 252 are all slidable, the PLC control device 7 firstly slides 2 guide rods 252 in the front direction and the guide rods 252 in the left or right direction perpendicular to the front direction, and when the 3 guide rods reach a preset fixed position, slides the other 3 guide rods 252; or may slide the guide rods 252 in the following direction 2 and the guide rods 252 in the left or right direction perpendicular to each other, and slide the other guide rods 252 after the guide rods 3 reach the predetermined fixed positions.
In a preferred technical scheme, the positioning mechanism 25 may also include front and rear 2 guide rods 252, and left and right 4 guide rods 252, where the left and right 4 guide rods 252 are arranged on two parallel extension lines in pairs, and the guide rod 252 is also provided with a blocking piece 251 perpendicular to the horizontal plane direction;
in the preferred technical scheme, only the left and right 4 guide rods 252 can slide, and the other 2 guide rods 252 cannot move;
in a preferred technical aspect, 6 guide rods 252 are all slidable, the PLC control device 7 firstly slides 2 guide rods 252 in the left direction and the guide rods 252 in the left direction or the right direction perpendicular to the guide rods, and when the 3 guide rods reach a preset fixed position, slides the other 3 guide rods 252; alternatively, 2 guide rods 252 in the right direction and the guide rods 252 in the left or right direction perpendicular to each other may be slid first, and after the 3 guide rods reach the predetermined fixed positions, the other 3 guide rods 252 may be slid.
In the preferred technical scheme, the downside of silk screen printing platform 22 still is provided with the vacuum adsorption hole, and the vacuum adsorption hole is connected the vacuum adsorption pump, can adsorb the product of being fixed in the silk screen printing region of fixing a position, improves the precision of silk screen printing operation.
As shown in fig. 5, the substrate heat treatment apparatus 3 of the present invention includes a grill main body 31, a heat generating mechanism 32, and a heat conducting plate 33, wherein the heat generating mechanism 32 is disposed above the grill main body 31, and the heat conducting plate 33 is disposed above the heat generating mechanism 32.
In a preferred technical scheme, a thermostatic valve 34 is arranged on the heating mechanism 32, and when the temperature on the heat conducting plate 33 reaches a preset temperature, the thermostatic valve 34 can control the heating mechanism 32 to keep the heat conducting plate 33 and the product in a constant temperature state all the time, so that the temperature is always kept at the heat treatment temperature required by ink curing on the product.
In a preferred embodiment, the heat conducting plate 33 is made of a metal material, such as copper or aluminum.
If the whole heat conducting plate 33 is a heat conducting area, a certain temperature difference always exists between the temperature on the heat conducting plate 33 and the ambient temperature, the temperature of the area is higher as the area is closer to the central area of the heat conducting plate 33, the area is located in the edge area of the heat conducting plate 33, the temperature of the area is relatively lower, and the edge warping phenomenon of the product can occur in the heat treatment process.
In a preferred technical scheme, the heat conducting plate 33 is only provided with a loop-shaped heat conducting area at the periphery, and other areas are isolated from the heating mechanism 32 by adopting a heat insulating plate 35 made of a non-heat conducting material or a heat insulating material.
In a preferred technical scheme, the loop-shaped heat conduction area is designed in a groove structure.
In the preferred technical scheme, the square-shaped heat conduction area adopts a square-shaped densely-distributed small hole structure design, and under the design, the heating temperature of the product is always uniform, which is beneficial to ensuring the product quality.
In a preferred technical scheme, a vacuum adsorption mechanism is connected below the heat conduction plate 33, so that the edge warping problem can be further solved.
In the preferred technical solution, a positioning mechanism 25 is further disposed below the heat conducting plate 33 of the substrate heat treatment apparatus 3, the positioning mechanism 25 is consistent with the positioning mechanism 25 on the screen printing platform 22, and the specific structure is not described herein again.
In the preferred technical scheme, base plate heat treatment device 3 top still sets up a cover that keeps warm, it still sets up an air draft mechanism and exhaust column to keep warm to cover the upper end, exhaust column intercommunication external environment can be taken out 3 surrounding environment of base plate heat treatment device with volatile printing ink and aqueous vapor, ensures this regional temperature, humidity environment's stability to and the sanitary safety of environment.
As shown in fig. 2, the blanking device 5 of the present invention includes a blanking frame 51 and a material receiving mechanism 54, wherein the material receiving mechanism 54 is disposed on the blanking frame 51, and when a product enters the blanking device 5, the material receiving mechanism 54 carries the product to move out of the screen printing production line.
As shown in fig. 2, in a preferred embodiment, the discharging device 5 further includes a tray feeding mechanism 55, a front section of the tray feeding mechanism 55 is connected to the tray collecting mechanism 15 of the feeding device 1, and the tray collecting mechanism 15 collects the trays and then transfers the trays to the tray feeding mechanism 55. When a product enters the blanking device 5, the tray feeding mechanism 55 transfers the tray to the blanking device 5, the manipulator 6 puts the product into the tray, and the receiving mechanism 54 moves the tray filled with the product out of the screen printing production line.
In an optimal technical scheme, a plurality of supporting points are arranged on the upper side of the tray, when the product is placed in the tray, the product is placed on the supporting points, the supporting points enable the product not to be in direct contact with the inner side of the tray, the heat dissipation speed of the product is improved, and the warping of the product is favorably relieved.
As shown in fig. 7, in a preferred technical solution, the blanking device 5 further includes a lifting mechanism 13 and a lifting cylinder 12, and the PLC control device 7 controls the lifting cylinder 12 to lift and lower the lifting mechanism 13, so that the plurality of trays containing products can be stably stacked and removed in sequence.
The invention also provides a silk-screen method, which comprises the following steps:
step S1, firstly, carrying out vacuum pumping treatment on the ink used for the silk-screen procedure by using a defoaming machine, and then adding the ink subjected to vacuum pumping treatment into a silk-screen mesh printing plate;
step S2, conveying the product to the feeding device 1, carrying the product by the feeding mechanism 14 of the feeding device 1, transmitting the product to the screen printing device 2, and controlling the automatic control manipulator 6 to transfer the product to the screen printing platform 22 of the screen printing device 2 according to a set program through the PLC control device 7;
step S3, after the product enters the screen printing platform 22, the positioning mechanism 25 on the screen printing platform 22 compares the product with a preset position to perform accurate alignment treatment, and after the accurate positioning is complete, the product slides back and forth on the screen printing bedplate through a screen printing scraper of the equipment, so that the printing ink is printed on the product;
step S4, after the silk-screen process is completed, the manipulator 6 transfers the product from the silk-screen platform 22 to the heat conducting plate 33 of the substrate heat treatment device 3, the heat conducting plate 33 continuously conducts heat to the product, when the temperature of the product rises to a preset temperature, the thermostatic valve 34 controls the heat conducting plate 33 to enter a constant temperature, and the heat conducting plate 33 and the product are continuously in a constant temperature state;
and step S5, the product is transferred out of the silk screen production line through the material receiving mechanism 54 on the blanking device 5, and the whole automatic silk screen production operation is completed immediately.
In a preferred technical solution, in the step S2, the feeding device 1 further includes a tray collecting mechanism 15, and when a product is loaded on the tray and enters the feeding device 1, the manipulator 6 first takes the product off the tray, then puts the product into the screen printing device 2, and at the same time, the tray is transferred to the tray collecting mechanism 15.
In a preferred technical solution, in the step S2, the feeding device 1 further includes a lifting mechanism 13 and a lifting cylinder 12, and when a plurality of products are loaded and stacked on a plurality of trays and enter the feeding device 1, the PLC control device 7 controls the lifting cylinder 12 to lift and lower the lifting mechanism 13.
In a preferred technical solution, in the step S3, the screen printing scraper has a plurality of cutting edges, and the cutting edges may be located on the same extension line at intervals; or can be respectively arranged on a plurality of parallel extension lines; the two parallel lines can be arranged on the same extension line or on a plurality of parallel lines respectively.
In a preferred embodiment, in step S4, the heat conducting plate 33 is made of a metal material, such as copper or aluminum.
In a preferred technical solution, in the step S4, only the periphery of the heat conducting plate 33 is provided with a loop-shaped heat conducting area, and the other areas are isolated from the heating mechanism 32 by using a heat insulating plate 35 made of a non-heat conducting material or a heat insulating material.
In a preferred technical solution, in the step S4, the loop-shaped heat conduction area is designed by using a groove structure.
In a preferred embodiment, in step S4, the loop-shaped heat conduction region is designed to have a large number of small holes.
In a preferred technical solution, in the step S4, the heat treatment time is 3-5 minutes, and the heat treatment temperature is 125-140 ℃.
In a preferred technical scheme, a cooling device 4 is further arranged between the substrate heat treatment device 3 and the blanking device 5.
In a preferred embodiment, in step S5, the discharging device 5 further includes a tray feeding mechanism 55, a front section of the tray feeding mechanism 55 is connected to the tray collecting mechanism 15 of the feeding device 1, and the tray collecting mechanism 15 collects the trays and then transfers the trays to the tray feeding mechanism 55. When a product enters the blanking device 5, the tray sending mechanism 55 transfers the tray to the blanking device 5, the manipulator 6 puts the product into the tray, the upper side of the tray can be provided with a plurality of supporting points, when the product is put into the tray, the product is placed on the supporting points, the supporting points enable the product not to be in direct contact with the inner side of the tray, the heat dissipation speed of the product is improved, and the warping of the product is favorably relieved.
The above preferred embodiments of the fully automatic silk-screen printing production line provided by the present invention should not be understood as limiting the scope of the present invention, and those skilled in the art should understand that, without conflict, the features in the above embodiments and embodiments may be combined with each other, and various modifications or substitutions may be made without departing from the spirit of the present invention, and all modifications or substitutions should fall within the scope of the present invention, that is, the scope of the present invention should be determined by the claims.
Claims (8)
1. A silk screen production line comprises a feeding device (1), a silk screen device (2), a substrate heat treatment device (3), a blanking device (5), a mechanical arm (6), a PLC control device (7) and an electrical control device, wherein the feeding device (1), the silk screen device (2), the substrate heat treatment device (3) and the blanking device (5) are sequentially connected, the PLC control device (7), the mechanical arm (6), the electrical control device and the feeding device (1), the silk screen device (2), the substrate heat treatment device (3) and the blanking device (5) are electrically connected, the substrate heat treatment device (3) comprises a grill main body (31), a heating mechanism (32) and a heat conducting plate (33), the heating mechanism (32) is arranged above the grill main body (31), the heat conducting plate (33) is arranged above the heating mechanism (32), the heat conducting plate (33) is only provided with a clip-shaped heat conducting area at the periphery, and other areas are isolated from the heating mechanism (32) by adopting a heat insulating plate (35) made of non-heat conducting material.
2. The line according to claim 1, characterized in that it further comprises M screen printing devices (2) and substrate heat treatment devices (3), M being an integer greater than or equal to 1.
3. The line according to any of the claims from 1 to 2, characterised in that the loading device (1) has a take-up device (15) and, when the products are loaded into the loading device (1) by means of a tray, the manipulator (6) removes the products from the tray and then places them in the screen printing device (2), the tray being transferred to the take-up device (15).
4. The silk-screen printing production line according to claim 3, characterized in that the feeding device (1) further comprises a lifting mechanism (13) and a lifting cylinder (12), and when a plurality of products are loaded and stacked into the feeding device (1) through a plurality of trays, the PLC control device (7) controls the lifting cylinder (12) to lift and lower the lifting mechanism (13).
5. The silk-screen production line of any one of claims 1 to 2, wherein the silk-screen device (2) comprises a silk-screen frame (21), a silk-screen platform (22), a connecting mechanism (23), a silk-screen sliding table (24) and a silk-screen scraper; the screen printing platform (22) and the connecting mechanism (23) are arranged on the screen printing rack (21); the screen printing sliding table (24) is arranged on the connecting mechanism (23) and is integrated with the screen printing rack (21) through the connecting mechanism (23); the upper end of the silk-screen scraper is arranged on the silk-screen sliding table (24); the silk-screen scraper is provided with a plurality of cutting edges which are arranged on the same extension line at intervals; or are respectively arranged on a plurality of parallel extension lines; or the two parallel lines are arranged on the same extension line or on a plurality of parallel lines respectively.
6. The silk-screen printing production line of claim 5, wherein the silk-screen printing platform (22) is further provided with a positioning mechanism (25), the positioning mechanism (25) comprises 4 guide rods (252) which are arranged in front, back, left and right, and the guide rods (252) are respectively provided with a baffle plate (251) perpendicular to the horizontal plane direction; or the positioning mechanism (25) comprises 6 guide rods (252) in the front, back, left and right directions, 4 guide rods (252) in the front and back, and 2 guide rods (252) in the left and right directions, wherein the 4 guide rods (252) are arranged on 2 parallel extension lines in pairs; the guide rod can also be a front guide rod (252) and a rear guide rod (252), the left guide rod (252) and the right guide rod (252), the 4 guide rods (252) are arranged on two parallel extension lines in pairs, and the guide rod (252) is also provided with a blocking piece (251) in the vertical direction.
7. The silk-screen printing production line of claim 1, wherein the heating mechanism (32) is provided with a thermostatic valve (34), and when the temperature of the heat conducting plate (33) reaches a preset temperature, the thermostatic valve (34) can control the heating mechanism (32) to keep the product at a constant temperature.
8. The silk-screen production line of claim 1, wherein the zigzag heat-conducting areas are designed in a groove structure or a zigzag densely-distributed small-hole structure.
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| CN201810454504.9A CN110466242B (en) | 2018-05-11 | 2018-05-11 | Automatic silk screen printing production line |
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| CN201810454504.9A CN110466242B (en) | 2018-05-11 | 2018-05-11 | Automatic silk screen printing production line |
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| CN110466242B true CN110466242B (en) | 2022-09-20 |
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| CN112123918A (en) * | 2020-09-03 | 2020-12-25 | 姚中南 | Batch automatic silk screen character missing printing device |
| CN114801437A (en) * | 2022-06-09 | 2022-07-29 | 华玻视讯(珠海)科技有限公司 | Rotary glass silk-screen baking production line |
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