Thick film paste printing apparatus for thermal sensitive printing sheet

Abstract

The present application relates to the technical fields of slurry printing production, and proposes a thick film slurry printing device for heat-sensitive printing sheet, which comprises a rack and a printing mechanism, at least two silk screens are arranged in the printing mechanism, and a conversion mechanism is further arranged to move the silk screens to a printing position of the printing mechanism; a turnover mechanism is arranged, which is provided with a turnover part for turning over the heat-sensitive printing sheet substrate to realize double-sided printing, and is provided with a printing receiving part and a shaping treatment part; the shaping treatment part comprises a drying and curing assembly and a rapid cooling and shaping assembly, the drying and curing assembly is used to dry the electrode printing pattern after printing on the heat-sensitive printing sheet substrate to make it quickly solidify, and the rapid cooling and shaping assembly is used to rapidly cool and shape the electrode printing pattern after drying and curing, and the shaping treatment part further comprises a rapid shaping auxiliary assembly; the present application is convenient for realizing double-sided printing of the heat-sensitive printing sheet substrate, and has high printing efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of slurry printing production, in particular to a thick film slurry printing device for a thermal printing sheet. BACKGROUND

[0002] The thermal printing sheet is an important component of a thermal printer, which is composed of a row of heating elements. These elements can quickly generate high temperature when passing through a certain current. When the medium coating encounters these elements, the temperature will rise in a very short time, and the medium coating will react chemically to show color. In the production process, a thick film slurry printing device is needed to print thick film electronic slurry onto the thermal printing sheet substrate and then solidify to form a circuit, so that the thermal element can work normally.

[0003] The existing thick film slurry printing device is usually a silk screen printing machine. The thick film electronic slurry is placed on the surface of the silk screen, and the thick film electronic slurry is printed onto the surface of the thermal printing sheet substrate through the movement of the squeegee. It can usually only be printed on one side. The circuits on both sides of the thermal printing sheet substrate exist, and double-sided printing is required during production. In the prior art, manual operation is usually used to turn over the thermal printing sheet substrate after single-sided printing, and then print the other side of the thermal printing sheet substrate again. In addition, the circuits on both sides of the thermal printing sheet substrate are not the same, and two silk screens are required during printing. In actual operation, the printing process is relatively complicated, the degree of automation is low, and after printing one side, the thick film slurry has a certain flowability due to the lack of drying and solidification. During the turning process of the thermal printing sheet substrate, the thick film slurry is gathered or dripped under the combined action of gravity and centrifugal force, which affects the printing quality of the thermal printing sheet substrate, especially the quality of the thermal printing sheet substrate printed first. SUMMARY

[0004] (I) Technical problems solved

[0005] In view of the deficiencies of the prior art, the present application provides a thick film slurry printing device for a thermal printing sheet to solve the problem of the prior art that it is not convenient to print both sides of the thermal printing sheet substrate.

[0006] (II) Technical solutions

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a thick film slurry printing device for a thermal printing sheet, comprising a rack and a printing mechanism arranged on the rack, at least two silk screens are arranged in the printing mechanism;

[0008] Further comprising:

[0009] A conversion mechanism with electrode printing pattern conversion function is used to move the silk screen to the printing position of the printing mechanism.

[0010] The turnover mechanism for overturning the thermal printing sheet substrate is provided with a turnover part for overturning the thermal printing sheet substrate to realize double-sided printing, and is provided with a printing support part for supporting and fixing the thermal printing sheet substrate before and after turnover, and a shaping treatment part for assisting the rapid preliminary curing of the electrode printing pattern after single-sided printing of the thermal printing sheet substrate.

[0011] The shaping treatment part comprises a drying and curing assembly and a rapid cooling and shaping assembly, the drying and curing assembly is used for drying and curing the electrode printing pattern after printing of the thermal printing sheet substrate, and the rapid cooling and shaping assembly is used for rapid cooling and shaping of the electrode printing pattern after drying and curing.

[0012] In order to realize the surrounding of the thermal printing sheet substrate during drying and curing and rapid cooling and shaping, the heating and cooling effects are concentrated in the range of the thermal printing sheet substrate, and the transportation of the thermal printing sheet substrate is avoided. The rapid shaping auxiliary assembly comprises a plurality of splicing temperature insulation covers and a temperature insulation cover opening and closing part for assembling and separating the plurality of splicing temperature insulation covers, the temperature insulation cover opening and closing part is installed on the rack, the splicing temperature insulation cover and the temperature insulation cover opening and closing part are connected, and the splicing temperature insulation cover is provided with a groove body matched with the turnover part.

[0013] The rapid shaping auxiliary assembly also has a temperature insulation function to realize the temperature insulation of the external area of the thermal printing sheet substrate.

[0014] In order to realize the rapid drying of the electrode printing pattern after single-sided thick film paste printing of the thermal printing sheet substrate, the drying and curing assembly comprises a heating and warming part and a hot air flow part, the heating and warming part and the hot air flow part are both installed in the interior of the rapid shaping auxiliary assembly, the heating and warming part is used for heating and drying the thermal printing sheet substrate in the interior of the rapid shaping auxiliary assembly, and the hot air flow part is used for assisting the hot air flow and ensuring the stability of the pressure in the interior of the rapid shaping auxiliary assembly.

[0015] In order to realize the air flow in the interior of the rapid shaping auxiliary assembly, improve the drying effect, and avoid excessive heating pressure, the hot air flow part comprises a fan and a air extractor, the fan is installed in the interior of the rapid shaping auxiliary assembly and is used for air flow in the interior of the rapid shaping auxiliary assembly, and the air extraction end of the air extractor is communicated with the rapid shaping auxiliary assembly and is used for extracting air in the interior of the rapid shaping auxiliary assembly.

[0016] In order to realize the rapid cooling and setting of the heat-sensitive printing sheet substrate after drying and curing, the rapid cooling and setting assembly comprises a refrigeration device and a temperature sensor, the output port of the refrigeration device is communicated with the rapid setting auxiliary assembly, and the air in the rapid setting auxiliary assembly and the heat-sensitive printing sheet substrate are cooled, and the temperature sensor is installed in the rapid setting auxiliary assembly, and the temperature in the rapid setting auxiliary assembly is monitored.

[0017] In order to realize the conversion of the positions of the plurality of screens, so as to replace the printing patterns of the two surfaces of the heat-sensitive printing sheet substrate, the conversion mechanism comprises a lifting assembly and a printing screen moving assembly, the printing screen moving assembly is used for moving the horizontal position of the screen, and the lifting assembly is used for adjusting the height of the plurality of screens.

[0018] In order to realize the transportation of the heat-sensitive printing sheet substrate and move it to the printing position of the printing mechanism, the transfer mechanism with the intermittent transfer station function is further provided, and the heat-sensitive printing sheet substrate is intermittently conveyed to the printing position of the printing mechanism.

[0019] In order to realize the lifting, turning and printing of the heat-sensitive printing sheet substrate, the printing part can lift the heat-sensitive printing sheet substrate to cooperate with the turning part and the printing mechanism.

[0020] (Three) beneficial effects

[0021] Compared with the known prior art, the present application provides a thick film paste printing device for heat-sensitive printing sheet, which has the following beneficial effects:

[0022] 1. In the present application, the printing part can lift the heat-sensitive printing sheet substrate to the screen, the printing mechanism can print the heat-sensitive printing sheet substrate, the printing part can lower the heat-sensitive printing sheet substrate to the turning part after printing, the turning part can turn the heat-sensitive printing sheet substrate, and then the printing part can lift the heat-sensitive printing sheet substrate to the printing position to print the other surface of the heat-sensitive printing sheet substrate. Compared with the prior art, the scheme is convenient for realizing the double-sided printing of the heat-sensitive printing sheet substrate, and the printing efficiency is higher.

[0023] 2. In the present application, the printing area of the single-sided printed thermal printing sheet substrate is quickly dried and cured by the drying and curing assembly, and then the dried and cured thermal printing sheet substrate is quickly cooled and shaped by the quick cooling and shaping assembly. In this process, the printing area of the thermal printing sheet substrate is surrounded by the quick shaping auxiliary assembly, so that the action positions of drying and curing and quick cooling and shaping are accurately positioned on the printing area of the thermal printing sheet substrate. At the same time, the temperature of other components outside the printing position is protected, and after the printing area is shaped, it is turned over to avoid quality problems caused by the flow of thick film paste. Compared with the prior art, the scheme solves the problem of thick film paste flow during the turning process of the single-sided printed thermal printing sheet substrate to some extent. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0026] Figure 2 is a schematic diagram of the three-dimensional structure of the present application Figure 1

[0027] Figure 3 is a schematic diagram of the three-dimensional structure of the present application Figure 1

[0028] Figure 4 is a schematic diagram of the three-dimensional structure of the present application Figure 1

[0029] Figure 5 is a schematic diagram of the three-dimensional structure of the present application from another angle;

[0030] Figure 6 is a schematic diagram of the three-dimensional structure of the present application of the printing part and the rotating frame and the like;

[0031] Figure 7 is a schematic diagram of the three-dimensional structure of the printing mechanism of the present application;

[0032] Figure 8 is a schematic diagram of the three-dimensional structure of the present application Figure 7

[0033] Figure 9 is a schematic diagram of the three-dimensional structure of the present application Figure 7 ​​​​​

[0034] Figure 10 Schematic diagram of the three-dimensional structure of the quick shaping auxiliary assembly and the rapid cooling shaping assembly of the present application matched with each other;

[0035] Figure 11 Schematic diagram of the three-dimensional structure of the quick shaping auxiliary assembly of the present application matched with each other.

[0036] The numbers in the figure respectively represent:

[0037] 1, rack;

[0038] 100, transfer mechanism; 101, sliding feeding plate;

[0039] 200, step-by-step reciprocating feeding assembly; 201, feeding track; 202, second motor; 203, first ball screw;

[0040] 300, printing part; 301, third electric cylinder; 302, vacuum chuck;

[0041] 400, turnover part; 401, support frame; 402, first motor;

[0042] 500, rotating frame; 501, rotating disc; 502, connecting rod;

[0043] 600, positioning and clamping assembly; 601, fourth electric cylinder; 602, clamping plate;

[0044] 700, printing mechanism; 701, mounting frame; 702, scraper; 703, ink returning blade; 704, first electric cylinder; 705, screen frame; 706, silk screen;

[0045] 800, reciprocating moving assembly; 801, third motor; 802, second ball screw; 803, sliding rod; 804, reciprocating moving seat;

[0046] 900, conversion mechanism; 901, second electric cylinder; 902, conversion frame;

[0047] 1000, printing silk screen moving assembly; 1001, fourth motor; 1002, gear; 1003, rack;

[0048] 1100, quick shaping auxiliary assembly; 1101, splicable temperature insulation cover; 1102, temperature insulation cover opening and closing part;

[0049] 1200, drying and curing assembly; 1201, heating and temperature raising part;

[0050] 1300, hot air flowing part; 1301, fan; 1302, air extractor;

[0051] 1400, rapid cooling and shaping assembly; 1401, refrigeration device; 1402, temperature sensor. DETAILED DESCRIPTION

[0052] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0053] Embodiment 1

[0054] Please refer to Figures 1 to 9 The thick film paste printing device for the thermal printing sheet comprises a rack 1, a transfer mechanism 100 with intermittent transfer station function, a printing mechanism 700 for printing the thermal head printing sheet substrate, and a turnover mechanism for overturning the thermal printing sheet substrate. The rack 1 is a thick film paste printing machine box. The turnover mechanism comprises a turnover part 400 and a printing part 300.

[0055] Please refer to Figure 1 and Figure 5 The transfer mechanism 100 penetrates through the rack 1. The transfer mechanism 100 comprises a plurality of sliding feeding plates 101 and a step-by-step reciprocating feeding assembly 200 for driving the plurality of sliding feeding plates 101 to move reciprocally. The step-by-step reciprocating feeding assembly 200 comprises a feeding track 201, a second motor 202, and a first ball screw 203. The rack 1, i.e., the thick film paste printing machine box, is provided with a penetrating installation opening. The feeding track 201 is fixedly installed inside the installation opening and penetrates through the rack 1. The second motor 202 is fixedly installed on the feeding track 201. The sliding feeding plate 101 and the feeding track 201 are in sliding cooperation. The first ball screw 203 is fixedly installed on the output end of the second motor 202. The sliding feeding plate 101 is provided with a first nut adapted to the first ball screw 203. The second motor 202 can drive the first ball screw 203 to rotate. The cooperation of the first nut and the first ball screw 203 and the limiting effect of the feeding track 201 on the sliding feeding plate 101 can realize the movement of the sliding feeding plate 101. The distances between the plurality of sliding feeding plates 101 are equal, and the distances between the plurality of stations are also equal. The sliding feeding plate 101 can drive the thermal printing sheet substrate to move to each station, such as a printing station and a drying station, etc. The second motor 202 is a step motor. Its rotation angle is set so that the movement distance of the sliding feeding plate 101 is equal to the distance between two sliding feeding plates 101, i.e., the distance between two stations.

[0056] Please refer to Figure 6The slip feeding plate 101 is provided with a printing base 300 for placing and driving the thermal printing sheet base to ascend and descend, the printing base 300 is used for supporting and fixing the thermal printing sheet base before and after turning over, the printing base 300 comprises a third electric cylinder 301 and a vacuum chuck 302, the third electric cylinder 301 is fixedly installed at the top end of the slip feeding plate 101, the vacuum chuck 302 is installed at the output end of the third electric cylinder 301 and is used for adsorbing and fixing the thermal printing sheet base, the vacuum chuck 302 is a prior art known by those skilled in the art and is provided with a vacuum pumping system matched therewith, the vacuum chuck 302 can be pumped to vacuum, the thermal printing sheet base is adsorbed and fixed at the top of the vacuum chuck 302, the stability of the thermal printing sheet base is ensured, and the third electric cylinder 301 can drive the vacuum chuck 302 to ascend and descend and adjust the height of the thermal printing sheet base.

[0057] Please refer to Figure 6 The turning part 400 turns over the thermal printing sheet base to realize double-sided printing, the turning part 400 comprises a rotating frame 500, the top end of the slip feeding plate 101 is fixedly connected with a support frame 401, the rotating frame 500 is rotatably installed between the support frames 401, the support frame 401 is provided with a first motor 402, the output end of the first motor 402 is connected with the rotating frame 500, the rotating frame 500 comprises two rotating discs 501 and a plurality of connecting rods 502, the rotating disc 501 is rotatably installed on the support frame 401, the connecting rod 502 is connected between the two rotating discs 501, the rotating frame 500 is provided with a positioning and clamping assembly 600 for clamping and positioning the thermal printing sheet base, the positioning and clamping assembly comprises a plurality of fourth electric cylinders 601 and a plurality of clamping plates 602, the fourth electric cylinder 601 is installed on the rotating frame 500, the clamping plate 602 is installed at the output end of the corresponding fourth electric cylinder 601, as shown in the figure, the number of the fourth electric cylinders 601 is four, two fourth electric cylinders 601 in the four fourth electric cylinders 601 are respectively installed on the corresponding rotating disc 501, and the other two fourth electric cylinders 601 are installed between the plurality of connecting rods 502 through the mounting plate, the corresponding two fourth electric cylinders 601 are symmetrically arranged on the two sides of the vacuum chuck 302, the fourth electric cylinder 601 can drive the clamping plate 602 to move to the center position of the rotating frame 500, the clamping plate 602 contacts the edge of the thermal printing sheet base, the four fourth electric cylinders 601 are synchronously moved, the thermal printing sheet base is limited at the center position of the rotating frame 500, and the first motor 402 can drive the two rotating discs 501 to rotate, the output shaft of the first motor 402 rotates by 180 degrees, and the thermal printing sheet base can be turned over.

[0058] The lifting height of the third electric cylinder 301 can be preset, and three lifting positions, i.e., a printing position, a clamping position and a turnover position, are provided. The printing position is at the highest position, at which the thermal printing sheet substrate is at the bottom of the screen 706; the clamping position is at the middle position, at which the thermal printing sheet substrate is at the center of the rotating frame 500, and the thermal printing sheet substrate can be clamped by the clamping plate 602 driven by the fourth electric cylinder 601; and the turnover position is at the lowest position, at which the thermal printing sheet substrate is separated from the vacuum chuck 302, and the thermal printing sheet substrate is outside the rotating frame 500, so as to avoid hindering the rotation of the rotating frame 500.

[0059] Please refer to Figure 7 and Figure 8 The printing mechanism 700 includes a mounting frame 701, a squeegee 702, an ink return blade 703, a reciprocating moving assembly 800 for driving the squeegee 702 and the ink return blade 703 to reciprocate, two first electric cylinders 704, two screen frames 705 and two screens 706, the two screens 706 are respectively provided with patterns on two sides of the thermal printing sheet substrate, the mounting frame 701 is installed in the inside of the rack 1, the reciprocating moving assembly 800 and the screen frame 705 are both installed on the mounting frame 701, the first electric cylinder 704 is installed on the reciprocating moving assembly 800, the squeegee 702 and the ink return blade 703 are respectively installed on the output ends of the corresponding first electric cylinders 704, the screen 706 is installed in the inside of the corresponding screen frame 705, the reciprocating moving assembly 800 includes a third motor 801, a second ball screw 802, a plurality of slide rods 803 and a reciprocating moving seat 804, the third motor 801 and the plurality of slide rods 803 are both installed on the mounting frame 701, the second ball screw 802 is rotatably installed on the mounting frame 701, the second ball screw 802 is fixedly installed on the output end of the third motor 801, the reciprocating moving seat 804 is provided with a second nut adapted to the second ball screw 802, the reciprocating moving seat 804 and the slide rod 803 are in sliding fit, and the first electric cylinder 704 is installed on the reciprocating moving seat 804.

[0060] The third motor 801 can drive the second ball screw 802 to rotate. Through the cooperation of the second nut and the second ball screw 802 and the limiting effect of the plurality of slide rods 803 on the reciprocating seat 804, the movement of the reciprocating seat 804 can be realized, and the scraper 702 and the ink return blade 703 are driven to move. The first electric cylinder 704 can drive the scraper 702 and the ink return blade 703 to ascend and descend. When printing, the first electric cylinder 704 drives the scraper 702 to descend, and at this time, the ink return blade 703 is at a higher position. The third motor 801 drives the scraper 702 to move along the second ball screw 802. The scraper 702 is pressed against the surface of the screen 706, and the thick film paste on the surface of the screen 706 is printed onto the thermal printing substrate through the gap of the screen 706 to perform circuit printing. After printing, the first electric cylinder 704 drives the scraper 702 to ascend, and the other first electric cylinder 704 drives the ink return blade 703 to descend to contact the screen 706, so as to evenly smear the thick film paste on the surface of the screen 706, preparing for the next thick film paste printing. The processing mode is the same as the printing mode of the existing screen 706 printer, and details are not described herein.

[0061] Example 2

[0062] See Figures 7 to 9On the basis of embodiment 1, the thick film paste printing device for the thermal sensitive printing sheet in embodiment 2 further comprises a conversion mechanism 900 with a pattern conversion function, the conversion mechanism 900 comprises a lifting assembly, a printing screen moving assembly for moving the horizontal position of the screen, the lifting assembly is used for adjusting the height of the plurality of screens, the lifting assembly comprises a plurality of second electric cylinders 901 and two conversion frames 902, the second electric cylinders 901 are installed on the mounting frame 701, the conversion frames 902 are connected with a plurality of sliding blocks, a plurality of sliding grooves matched with the sliding blocks are formed in the mounting frame 701, the sliding blocks realize the sliding fit between the conversion frames 902 and the mounting frame 701 through the inside of the sliding grooves, the conversion frames 902 are connected with the output ends of the second electric cylinders 901, the screen frames 705 are located between the two conversion frames 902, the two ends of the screen frames 705 close to the two conversion frames 902 are fixedly connected with moving blocks, the conversion frames 902 are provided with moving grooves matched with the moving blocks, the moving blocks realize the sliding fit between the screen frames 705 and the conversion frames 902 through the inside of the moving grooves, the conversion frames 902 are installed with a printing screen moving assembly 1000 for driving the two screen frames 705 to slide, the printing screen moving assembly 1000 comprises a fourth motor 1001, two gears 1002 and four racks 1003, the fourth motor 1001 is installed on the conversion frame 902, the two gears 1002 are rotatably installed between the two conversion frames 902 through rotating shafts, the rotating shafts are fixedly installed on the output end of the fourth motor 1001, the gears 1002 are located between the two screen frames 705, the two screen frames 705 are centrally symmetrical relative to the center of the gear 1002, the racks 1003 are fixedly connected with the corresponding screen frames 705, and the racks 1003 are engaged with the corresponding gears 1002;

[0063] The fourth motor 1001 can drive the rotating shafts and the two gears 1002 to rotate, the movement of the racks 1003 and the screen frames 705 is realized through the engagement of the racks 1003 and the gears 1002, the relative movement of the two screen frames 705 is realized through the rotation of the gears 1002, that is, when one screen frame 705 moves to the printing area, the other screen frame 705 is located away from the printing area, the conversion frames 902 can be lifted through the second electric cylinders 901, the heights of the two screens 706 are different, the heights of the two screens 706 are adjusted through the second electric cylinders 901, so that the screen 706 located in the printing area, that is, the screen 706 located below the doctor blade 702, is at the same height during printing.

[0064] Embodiment 3

[0065] Please refer to Figure 1 、 Figure 5 、 Figure 10 and Figure 11On the basis of Embodiment 1 and Embodiment 2, the turnover mechanism in this embodiment 3 further comprises a shaping treatment part for assisting the rapid preliminary curing of the electrode printing pattern after the single-sided printing of the thermosensitive printing sheet substrate, the shaping treatment part comprises a drying and curing assembly 1200 and a rapid cooling and shaping assembly 1400, the drying and curing assembly 1200 is used for drying the electrode printing pattern after the printing of the thermosensitive printing sheet substrate to make it rapidly cured, and the rapid cooling and shaping assembly 1400 is used for rapid cooling and shaping of the electrode printing pattern after drying and curing, and the shaping treatment part further comprises a rapid shaping auxiliary assembly 1100 for surrounding the thermosensitive printing sheet substrate during the drying and curing and the rapid cooling and shaping.

[0066] Please refer to Figure 10 and Figure 11 The rapid shaping auxiliary assembly 1100 comprises a plurality of splicable temperature insulation covers 1101 and a temperature insulation cover opening and closing part 1102 for assembling and separating the plurality of splicable temperature insulation covers 1101, the temperature insulation cover opening and closing part 1102 can be selected as an electric cylinder, the electric cylinder is installed on the inner wall of the rack 1, the splicable temperature insulation cover 1101 is connected with the output end of the electric cylinder, as shown in the drawing, the number of the splicable temperature insulation cover 1101 is selected as two, the splicable temperature insulation cover 1101 is provided with a groove body matched with the turnover part 400, the rapid shaping auxiliary assembly 1100 also has a temperature insulation function to realize the temperature insulation of the external area of the thermosensitive printing sheet substrate, the plurality of splicable temperature insulation covers 1101 can be driven to approach or move away from each other through the output end of the electric cylinder, the plurality of splicable temperature insulation covers 1101 are in close contact to form a closed cavity, the thermosensitive printing sheet substrate after the single-sided thick film paste printing is surrounded, the heating and cooling effects during the drying and curing and the rapid cooling and shaping are concentrated in the inside of the plurality of splicable temperature insulation covers 1101, and the heating and cooling effects are remarkable.

[0067] Please refer to Figure 10 and Figure 11In order to realize the sudden and rapid drying of the motor printing after the single-sided thick film paste printing of the heat-sensitive printing plate substrate, the drying and curing assembly 1200 comprises a heating and warming component 1201 and a hot air flow component 1300, both of which are installed inside the rapid shaping auxiliary assembly 1100. The heating and warming component 1201 is used to heat and dry the heat-sensitive printing plate substrate inside the rapid shaping auxiliary assembly 1100. The heating and warming component 1201 can use an electric heating wire or an electric heating plate, which is installed inside the corresponding splicable temperature insulation cover 1101. The hot air flow component 1300 is used to assist the flow of hot air and ensure the stability of the pressure inside the rapid shaping auxiliary assembly 1100. The hot air flow component 1300 comprises a fan 1301 and an air extractor 1302. The fan 1301 is installed inside the rapid shaping auxiliary assembly 1100 to flow the air inside the rapid shaping auxiliary assembly 1100, and the air outlet of the fan 1301 is far away from the heat-sensitive printing plate substrate to avoid causing the flow of the printed thick film paste. The air extraction end of the air extractor 1302 communicates with the rapid shaping auxiliary assembly 1100 to extract the air inside the rapid shaping auxiliary assembly 1100. The external air can enter through the gap between the multiple splicable temperature insulation covers 1101. Through the cooperation of the fan 1301 and the air extractor 1302, the air flow inside the multiple splicable temperature insulation covers 1101 is realized, the heating and cooling rate is improved, and the dust and impurities generated during the drying and fixing process can be extracted by the air extractor 1302. A dust collection box can be installed on the air extraction pipeline of the air extractor 1302. A filter screen is installed inside the dust collection box. The air extraction port of the air extractor 1302 is located inside the filter screen. The filter screen allows air to flow through, leaving dust inside the dust collection box, and collecting and processing dust and impurities.

[0068] Please refer to Figure 10 and Figure 11In order to realize the rapid cooling and setting of the heat-sensitive printing plate substrate after drying and curing, the rapid cooling and setting assembly 1400 comprises a refrigeration device 1401 and a temperature sensor 1402. The output port of the refrigeration device 1401 is communicated with the rapid setting auxiliary assembly 1100, and is used for cooling the air inside the rapid setting auxiliary assembly 1100 and the heat-sensitive printing plate substrate. The refrigeration device 1401 can be a cold air machine or a water cooling machine, and can transport cold air to the inside of the rapid setting auxiliary assembly 1100 surrounded by the multiple splicable temperature insulation covers 1101, so as to rapidly cool and set the electrode printing pattern on the heat-sensitive printing plate substrate after the single-sided thick film paste printing is completed. At the same time, when the multiple splicable temperature insulation covers 1101 are driven by the electric cylinder to move away from each other, the high temperature generated by drying and curing is reduced, and the components in the printing area are protected. The temperature sensor 1402 is installed inside the rapid setting auxiliary assembly 1100, and is used for monitoring the temperature inside the rapid setting auxiliary assembly 1100. After the refrigeration device 1401 cools the environment to room temperature, the temperature sensor 1402 senses it, and the refrigeration device 1401 is closed through the controller.

[0069] In summary, the thick film paste printing device for the thermal printing sheet is used for printing the thermal printing sheet substrate. First, the third electric cylinder 301 drives the vacuum chuck 302 to the intermediate position, i.e., the clamping position, and the initial multiple clamping plates 602 are away from the vacuum chuck 302. The thermal printing sheet substrate is placed on the top of the vacuum chuck 302. The fourth electric cylinder 601 is started, and the clamping plate 602 is driven to move towards the thermal printing sheet substrate to position the thermal printing sheet substrate at the center of the rotating frame 500. The thermal printing sheet substrate is adsorbed on the top of the vacuum chuck 302 by the vacuum system. The second motor 202 is started, and the first ball screw 203 is rotated to drive the sliding feed plate 101 to move the thermal printing sheet substrate to the inside of the thick film paste printing machine box and to the printing position, i.e., below the screen 706. The fourth electric cylinder 601 is controlled to drive the clamping plate 602 away from the thermal printing sheet substrate. The third electric cylinder 301 is controlled to drive the vacuum chuck 302 and the thermal printing sheet substrate to rise to the printing position, i.e., the bottom of the screen 706. The third motor 801 and the first electric cylinder 704 that controls the lifting of the squeegee 702 are started. The first electric cylinder 704 drives the squeegee 702 to descend and press on the surface of the screen 706. The second ball screw 802 is rotated by the third motor 801 to drive the reciprocating moving seat 804 to move. The thick film paste on the screen 706 is printed on the surface of the thermal printing sheet substrate by the squeegee 702. Then, the first electric cylinder 704 drives the squeegee 702 to rise. Another first electric cylinder 704 drives the ink return blade 703 to descend. At the same time, the second motor 202 is reversed to drive the ink return blade 703 to move to the original position to evenly smear the thick film paste on the surface of the screen 706 for the next printing. The third electric cylinder 301 drives the vacuum chuck 302 and the thermal printing sheet substrate to descend to the rotating frame 500, i.e., the clamping position. The fourth electric cylinder 601 is started to drive the clamping plate 602 to clamp the thermal printing sheet substrate. The adsorption of the thermal printing sheet substrate by the vacuum chuck 302 is released. At this time, the electric cylinder is started. The temperature insulation cover opening and closing part 1102 drives multiple splicable temperature insulation covers 1101 to approach each other to surround the thermal printing sheet substrate and the positioning and clamping assembly 600. The heating and warming part 1201 is started to heat. The electrode printing pattern on the thermal printing sheet substrate after single-sided printing is dried and cured. The fan 1301 makes the hot air flow. The air extractor 1302 extracts the air in the multiple splicable temperature insulation covers 1101 and collects impurities. After a certain period of drying and curing, the temperature insulation cover opening and closing part 1102 drives the splicable temperature insulation covers 1101 to move away from each other to avoid interfering with the work of other components. Then, the third electric cylinder 301 continues to drive the vacuum chuck 302 to descend to the turnover position. The first motor 402 is started to rotate the rotating disc 501 to a certain degree to turn over the thermal printing sheet substrate. Then, the third electric cylinder 301 drives the vacuum chuck 302 to rise to the clamping position.Continue to adsorb the heat sensitive printing sheet substrate, the fourth electric cylinder 601 drives the clamping plate 602 away from the heat sensitive printing sheet substrate, the third electric cylinder 301 drives the vacuum chuck 302 and the heat sensitive printing sheet substrate to rise to the printing position, in the process, the fourth motor 1001 is started, the fourth motor 1001 drives the two gears 1002 to rotate, the rack 1003 drives the two screen frames 705 to move relatively, the printed screen 706 moves to the position away from the printing area, the screen 706 provided with another pattern is moved to the printing area, and the conversion frame 902 is driven to rise and fall by the second electric cylinder 901, so that the screen 706 is at the printing position, then the third motor 801 and the first electric cylinder 704 controlling the scraper 702 to rise and fall are started, the above operation is repeated to print the thick film paste of the surface, after printing, the third electric cylinder 301 drives the vacuum chuck 302 and the double-sided printed heat sensitive printing sheet substrate to descend, in the printing process, the processing personnel can install the new heat sensitive printing sheet substrate on the top of the next vacuum chuck 302, when the printed heat sensitive printing sheet substrate is moved to the next station by the second motor 202 driving the sliding feeding plate 101 after printing, the heat sensitive printing sheet substrate of the previous station is just moved to the printing area, and the above operation is repeated to print the thick film paste on the heat sensitive printing sheet substrate.

[0070] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of the present application being defined by the appended claims and their equivalents.

Claims

1. A thick film paste printing apparatus for thermal printing sheets, comprising a frame (1) and a printing mechanism (700) disposed on the frame (1), characterized in that, The printing mechanism (700) is provided with at least two screens (706). Also includes: A conversion mechanism (900) with electrode printing pattern conversion function is used to move the screen (706) to the printing position of the printing mechanism (700). The conversion mechanism (900) includes a lifting component and a screen moving component. The screen moving component is used to move the horizontal position of the screen (706), and the lifting component is used to adjust the height of multiple screens (706). A flipping mechanism for flipping a thermal printing substrate, the flipping mechanism having a flipping part (400) for flipping the thermal printing substrate to achieve double-sided printing, the flipping mechanism having a printing part (300) for supporting and fixing the thermal printing substrate before and after flipping, and a shaping processing part for assisting the rapid initial curing of the electrode printing pattern after single-sided printing of the thermal printing substrate. The shaping process unit includes a drying and curing component (1200) and a rapid cooling shaping component (1400). The drying and curing component (1200) is used to dry the electrode printing pattern printed on the thermal printing substrate to make it rapidly solidify. The rapid cooling shaping component (1400) is used to rapidly cool and shape the electrode printing pattern after drying and curing. The shaping process unit also includes a rapid shaping auxiliary component (1100) for surrounding the thermal printing substrate during the drying, curing and rapid cooling shaping processes. The rapid shaping auxiliary component (1100) includes multiple splicable heat insulation covers (1101) and a heat insulation cover opening and closing component (1102) for assembling and separating the multiple splicable heat insulation covers (1101). The heat insulation cover opening and closing component (1102) is mounted on the frame (1). The splicable heat insulation covers (1101) and the heat insulation cover opening and closing component (1102) are connected. The splicable heat insulation covers (1101) have grooves that are adapted to the flipping part (400).

2. The thick film paste printing equipment for thermal printing sheets according to claim 1, characterized in that, The drying and curing assembly (1200) includes a heating element (1201) and a hot air flow element (1300). Both the heating element (1201) and the hot air flow element (1300) are installed inside the rapid setting auxiliary assembly (1100). The heating element (1201) is used to heat and dry the thermal printing substrate located inside the rapid setting auxiliary assembly (1100). The hot air flow element (1300) is used to assist the flow of hot air and ensure the stability of the pressure inside the rapid setting auxiliary assembly (1100).

3. The thick film paste printing equipment for thermal printing sheets according to claim 2, characterized in that, The hot air flow component (1300) includes a fan (1301) and an exhaust fan (1302). The fan (1301) is installed inside the rapid shaping auxiliary component (1100) for air flow inside the rapid shaping auxiliary component (1100). The exhaust end of the exhaust fan (1302) is connected to the rapid shaping auxiliary component (1100) for extracting air from inside the rapid shaping auxiliary component (1100).

4. The thick film paste printing equipment for thermal printing sheets according to claim 3, characterized in that, The rapid cooling and shaping component (1400) includes a cooling device (1401) and a temperature sensor (1402). The output port of the cooling device (1401) is connected to the rapid shaping auxiliary component (1100) and is used to cool the air inside the rapid shaping auxiliary component (1100) and the thermal printing substrate. The temperature sensor (1402) is installed inside the rapid shaping auxiliary component (1100) and is used to monitor the temperature inside the rapid shaping auxiliary component (1100).

5. The thick film paste printing equipment for thermal printing sheets according to claim 4, characterized in that, It also includes a transfer mechanism (100) with an intermittent transfer station function for intermittently transporting the thermal printing substrate to the printing position of the printing mechanism (700).

6. The thick film paste printing equipment for thermal printing sheets according to claim 5, characterized in that, The printing unit (300) can drive the thermal printing substrate to perform lifting and lowering printing, so as to cooperate with the flipping unit (400) to flip the thermal printing substrate and the printing mechanism (700) to print.

7. The thick film paste printing equipment for thermal printing sheets according to claim 6, characterized in that, The rapid shaping auxiliary component (1100) also has a thermal insulation function to insulate the external area of ​​the thermal printing substrate.

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