Glaze treatment and glazing process of thermal print head ceramic substrate

Abstract

The present invention discloses a glaze treatment and glazing process for a thermal print head ceramic substrate, and relates to the field of thermal print sheet production. The glaze treatment for a thermal print head ceramic substrate includes a grinding chamber and a treatment box fixedly connected to the bottom of the grinding chamber, and also includes a grinding mechanism that penetrates the grinding chamber and is rotatably connected to the top plate of the grinding chamber, a screening mechanism connected to the grinding mechanism, an adsorption mechanism arranged inside the treatment box, and a material receiving mechanism. The adsorption mechanism includes a movable shaft movably arranged below the screening cylinder, and a plurality of electrostatic adsorption plates distributed in a ring array on the outer surface of the movable shaft. The present invention is a glaze treatment and glazing process for a thermal print head ceramic substrate, and the electrostatic adsorption plate is activated to adsorb the dust scattered inside the treatment box. In this process, the electrostatic adsorption plate can be driven to rotate, thereby increasing the contact area between the electrostatic adsorption plate and the air, thereby improving the adsorption effect on dust.

Description

Technical Field

[0001] The invention relates to the field of thermal printing sheet production, in particular to a glaze treatment and glazing process for a ceramic substrate of a thermal printing head. Background Art

[0002] The production process of thermal printing sheets is as follows: first, a ceramic substrate is selected, and a glass glaze heat storage layer is formed on its surface by screen printing; then, silicon oxide glass paste is coated on the substrate by screen printing, and sintered at high temperature (about 1200°C) to form a heat storage layer; then, a resistor layer is formed on the heat storage layer by magnetron sputtering technology, such as a resistor layer composed of TaN (tantalum nitride), and an electrode layer is formed on the surface of the resistor layer by magnetron sputtering; then, a heating element is formed on the resistor layer by semiconductor photolithography technology, and a protective layer is formed on the resistor layer and the electrode layer; then, wiring is formed on the substrate by screen printing or photolithography, and connected to the heating element; finally, the components are assembled into a complete thermal print head, and electrical connections and packaging are performed. In the formation of the glass glaze heat storage layer, the main raw materials of the glaze (i.e., kaolin, quartz, feldspar, etc.) need to be ground into powder, and an appropriate amount of water is added to mix to form a uniform slurry, and then spray granulation, pressing molding, and drying are performed in sequence to form glaze particles.

[0003] Among them, kaolinite has a strong adsorption capacity and can absorb moisture in the environment. This adsorption makes it easy for kaolinite to absorb moisture from the air under natural conditions, thereby maintaining a certain water content. In addition, the layered structure of kaolinite enables it to store a large amount of water molecules.

[0004] At present, most grinding devices put the raw materials into the grinding device, and then use the grinding head to squeeze and rub them to achieve the grinding effect. In this process, it is difficult for the materials to be evenly distributed during the grinding process. After the grinding is completed, the raw materials contain moisture, which causes powder agglomeration, affecting the subsequent screening. In addition, a small amount of incompletely ground materials will be mixed into the finished product, resulting in a greatly reduced pass rate. Later, in the process of collecting the materials, the fine dust will be scattered inside the device, resulting in that when the materials are taken out, part of the scattered dust affects human health, and the other part sticks to the inner wall of the device, making it inconvenient to clean it. Summary of the invention

[0005] The main purpose of the present invention is to provide a glaze treatment and glazing process for a ceramic substrate of a thermal print head. By setting up an adsorption mechanism, the problem that a small amount of incompletely ground materials may be mixed into the finished product, resulting in a greatly reduced qualified rate, is solved. By setting up an adsorption mechanism, the problem that fine dust may be scattered inside the device, resulting in part of the scattered dust affecting human health when the material is taken out, and the other part adheres to the inner wall of the device, making it inconvenient to clean it is solved.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] The glaze material processing of the ceramic substrate of the thermal print head includes a grinding chamber and a processing box fixedly connected to the bottom of the grinding chamber, and also includes a grinding mechanism that penetrates the grinding chamber and is rotatably connected to the top plate of the grinding chamber, a screening mechanism connected to the grinding mechanism, an adsorption mechanism arranged inside the processing box, and a material receiving mechanism;

[0008] The grinding mechanism includes a grinding head movably arranged inside the grinding chamber, a transmission pipe fixedly connected to the bottom of the grinding head, an electric heating wire fixedly connected to the inside of the grinding head, and an air pump fixedly connected to the top of the grinding chamber, wherein the air pump is connected to the inside of the grinding head through a pipeline;

[0009] The screening mechanism comprises a screening cylinder movably arranged inside the processing box, a screen installed inside the screening cylinder, and a triangular block fixedly connected to the inner side wall of the screening cylinder;

[0010] The screening mechanism further comprises a stirring tube fixedly connected to the outer side wall of the transmission tube, and a plurality of air outlet pipes linearly and evenly distributed at the bottom of the stirring tube.

[0011] The screening mechanism also includes a fixing ring fixedly connected to the inner wall of the processing box, an electromagnet embedded in the fixing ring, a telescopic rod fixedly connected to the top of the fixing ring, a positioning plate fixedly connected to the top of the telescopic rod, and a connecting spring sleeved on the outside of the telescopic rod.

[0012] The screening mechanism also includes a transmission plate fixedly connected to the outer wall of the screening cylinder, a sliding rod fixedly connected to the top of the transmission plate, and a guide sleeve and a distance sensor fixedly connected to the top wall of the processing box, wherein the guide sleeve is arranged on the outer surface of the distance sensor.

[0013] The adsorption mechanism comprises a movable shaft movably arranged below the screening drum, and a plurality of electrostatic adsorption plates distributed in a ring array on the outer surface of the movable shaft.

[0014] Preferably, the grinding mechanism further comprises a rotating tube penetrating through the top plate of the grinding chamber and rotatably connected thereto, a driving motor fixedly connected to the top of the grinding chamber, a main gear fixedly connected to the outer side wall of the output end of the driving motor, and a driven gear fixedly connected to the outer side wall of the rotating tube;

[0015] The top of the grinding head is fixedly connected to the bottom end of the rotating tube, and the main gear is meshed with the driven gear.

[0016] Preferably, the grinding mechanism further comprises a one-way valve fixedly installed inside the rotating tube, a transmission tube fixedly connected to the top of the grinding head, and an electric control valve fixedly installed inside the transmission tube.

[0017] Preferably, the adsorption mechanism further comprises a threaded sleeve threadedly connected to the bottom of the screening cylinder, and a support frame fixedly connected to the inner side wall of the threaded sleeve;

[0018] The movable shaft is rotatably connected to the support frame.

[0019] Preferably, the adsorption mechanism further comprises an air pump and a drying box fixedly connected to the outer wall of the processing box, a plurality of partitions fixedly connected to the inner wall of the drying box and distributed linearly and equidistantly, and a through hole opened on the top of the partition;

[0020] The interior of the drying box is connected with the interior of the processing box through a connecting pipe.

[0021] Preferably, the material receiving mechanism comprises an electric push rod fixedly connected to the inner bottom wall of the processing box, a supporting plate fixedly connected to the output end of the electric push rod, and a material receiving box engaged on the top of the supporting plate.

[0022] The glazing process of the glaze treatment of the ceramic substrate of the thermal print head includes the following steps:

[0023] S1, preparation stage: first use degreasing agent to brush and clean the screen, then apply photosensitive glue on the cleaned screen and let it dry, then stick the designed film on the screen, perform vacuum exposure treatment to harden the photosensitive glue, finally take out the film, wet both sides of the screen with cold water, spray clean and quickly dry;

[0024] S2, glaze treatment;

[0025] S3, glaze printing: place a preheated scraper on the screen and apply pressure through the scraper to squeeze the glaze from the mesh of the screen to the surface of the ceramic substrate. After the scraper is removed, a uniform glaze layer is formed on the surface of the ceramic substrate.

[0026] S4, drying and sintering: After the glaze layer is dry, it is sintered at high temperature, cooled down and taken out of the furnace, and the finished product is obtained after natural cooling.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. In the present invention, the electric control valve is closed and the air pump is used to deliver air to the interior of the grinding head. At this time, a one-way valve is provided to prevent air leakage, thereby increasing the pressure inside the grinding head. Then, the electric heating wire is started to heat the grinding head. The high pressure inside the grinding head is used to accelerate the heating speed, thereby improving the drying rate of the raw material by the grinding head.

[0029] 2. In the present invention, the raw material is ground by the grinding head, and the ground material will fall into the inside of the screening cylinder under the action of gravity, and the material will be screened by the screen. At this time, the air outlet pipe will rotate with the grinding head under the action of the stirring pipe and the transmission pipe, so as to break up the material, and the electric control valve is in an open state at this time, so that the hot air is discharged from the air outlet pipe, further improving the drying and breaking up effect of the material.

[0030] 3. In the present invention, when the grinding head is working, the ground material will fall into the inside of the screening cylinder under the action of gravity, and the material will be screened through the screen. At this time, the air outlet pipe will rotate with the grinding head under the action of the stirring pipe and the transmission pipe, so as to break up the material. At this time, the electric control valve is in an open state, so that hot air is discharged from the air outlet pipe, further improving the drying and breaking up effect of the material.

[0031] 4. In the present invention, the electrostatic adsorption plate is activated to adsorb the dust scattered inside the processing box. During this process, the vacuum pump transports the water vapor inside the grinding chamber to the inside of the drying box, and dries the air through the desiccant filled in the drying box. The dried air is then transported to the inside of the processing box and drives the electrostatic adsorption plate to rotate, thereby increasing the contact area between the electrostatic adsorption plate and the air, thereby improving the dust adsorption effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] FIG1 is a schematic structural diagram of a glaze processing device of the present invention;

[0033] FIG2 is a schematic diagram of the internal structure of FIG1 of the present invention;

[0034] FIG3 is an enlarged schematic diagram of structure A in FIG2 of the present invention;

[0035] FIG4 is a schematic diagram of the three-dimensional structure of the screening cylinder in FIG1 of the present invention;

[0036] FIG5 is a schematic diagram of the distribution structure of the electrostatic adsorption plate in FIG1 of the present invention;

[0037] FIG. 6 is a schematic diagram of the glazing process flow of the present invention.

[0038] In the figure: 1, grinding chamber; 2, processing box; 301, rotating tube; 302, grinding head; 303, driving motor; 304, main gear; 305, driven gear; 306, electric heating wire; 307, one-way valve; 308, electric control valve; 309, air pump; 401, screening cylinder; 402, screen; 403, stirring tube; 404, air outlet pipe; 405, triangular block; 406, fixing ring; 407, electromagnet; 408, telescopic rod; 409, positioning plate; 4010, connecting spring; 4011, transmission plate; 4012, sliding rod; 4013, guide sleeve; 4014, distance sensor; 501, threaded sleeve; 502, support frame; 503, movable shaft; 504, electrostatic adsorption plate; 505, vacuum pump; 506, drying box; 507, partition; 601, electric push rod; 602, carrying plate; 603, material collection box. DETAILED DESCRIPTION

[0039] Embodiment 1

[0040] 1 and 2, the present invention is a thermal print head ceramic substrate glaze treatment, including a grinding chamber 1 and a treatment box 2 fixedly connected to the bottom of the grinding chamber 1, and also includes a grinding mechanism that penetrates the grinding chamber 1 and is rotatably connected to the top plate of the grinding chamber 1, a screening mechanism connected to the grinding mechanism, an adsorption mechanism disposed inside the treatment box 2, and a material receiving mechanism;

[0041] The grinding mechanism includes a grinding head 302 movably arranged inside the grinding chamber 1, a transmission pipe fixedly connected to the bottom of the grinding head 302, an electric heating wire 306 fixedly connected to the inside of the grinding head 302, and an air pump 309 fixedly connected to the top of the grinding chamber 1, and the air pump 309 is connected to the inside of the grinding head 302 through a pipeline;

[0042] The screening mechanism includes a screening cylinder 401 movably arranged inside the processing box 2, a screen 402 installed inside the screening cylinder 401, and triangular blocks 405 fixedly connected to the inner wall of the screening cylinder 401, wherein the triangular blocks 405 are in two groups and are mirror-distributed with the central axis of the screening cylinder 401 as the axis of symmetry;

[0043] The adsorption mechanism includes a movable shaft 503 movably disposed below the screening drum 401 , and a plurality of electrostatic adsorption plates 504 distributed on the outer surface of the movable shaft 503 in a ring array.

[0044] The grinding mechanism also includes a rotating tube 301 that penetrates the top plate of the grinding chamber 1 and is rotatably connected thereto, a driving motor 303 fixedly connected to the top of the grinding chamber 1, a main gear 304 fixedly connected to the outer side wall of the output end of the driving motor 303, and a driven gear 305 fixedly connected to the outer side wall of the rotating tube 301;

[0045] The top of the grinding head 302 is fixedly connected to the bottom of the rotating tube 301, and the main gear 304 is meshed with the driven gear 305. The main gear 304 is driven to rotate by the driving motor 303, thereby driving the meshed driven gear 305 to rotate, and then driving the grinding head 302 to rotate, so as to grind the raw materials inside the grinding chamber 1.

[0046] The grinding mechanism also includes a one-way valve 307 fixedly installed inside the rotating tube 301, and an electric control valve 308 fixedly installed inside the transmission tube, wherein the outer diameter of the pipeline matches the inner size of the rotating tube 301, and one end of the pipeline is plugged into the interior of the rotating tube 301. By closing the electric control valve 308 and allowing the air pump 309 to transport air to the interior of the grinding head 302, the one-way valve 307 is set to prevent air leakage, thereby increasing the internal pressure of the grinding head 302, and then starting the electric heating wire 306 to heat the grinding head 302. The high pressure inside the grinding head 302 is used to accelerate the heating speed, thereby increasing the drying rate of the raw material by the grinding head 302.

[0047] By closing the electric control valve 308 and allowing the air pump 309 to deliver air to the inside of the grinding head 302, the internal pressure of the grinding head 302 is increased, and then the electric heating wire 306 is started to heat the grinding head 302 to achieve preliminary drying of the raw materials, and the main gear 304 is driven to rotate by the driving motor 303, thereby driving the driven gear 305 meshing with it to rotate, and then driving the grinding head 302 to rotate, so as to grind the raw materials inside the grinding chamber 1.

[0048] Embodiment 2

[0049] Please refer to Figure 2, Figure 3 and Figure 4 As shown, the present invention is a glaze treatment for a thermal print head ceramic substrate, comprising a grinding chamber 1 and a treatment box 2 fixedly connected to the bottom of the grinding chamber 1, and also comprising a grinding mechanism penetrating the grinding chamber 1 and rotatably connected to the top plate of the grinding chamber 1, a screening mechanism connected to the grinding mechanism, an adsorption mechanism arranged inside the treatment box 2, and a material receiving mechanism;

[0050] The grinding mechanism includes a grinding head 302 movably arranged inside the grinding chamber 1, a transmission pipe fixedly connected to the bottom of the grinding head 302, an electric heating wire 306 fixedly connected to the inside of the grinding head 302, and an air pump 309 fixedly connected to the top of the grinding chamber 1, and the air pump 309 is connected to the inside of the grinding head 302 through a pipeline;

[0051] The screening mechanism includes a screening cylinder 401 movably arranged inside the processing box 2, a screen 402 installed inside the screening cylinder 401, and triangular blocks 405 fixedly connected to the inner wall of the screening cylinder 401, wherein the triangular blocks 405 are in two groups and are mirror-distributed with the central axis of the screening cylinder 401 as the axis of symmetry;

[0052] The adsorption mechanism includes a movable shaft 503 movably disposed below the screening drum 401 , and a plurality of electrostatic adsorption plates 504 distributed on the outer surface of the movable shaft 503 in a ring array.

[0053] The screening mechanism also includes a stirring tube 403 fixedly connected to the outer wall of the transmission tube, and a plurality of air outlet pipes 404 linearly and evenly spaced at the bottom of the stirring tube 403, wherein the air outlet pipe 404 is connected to the transmission tube through the stirring tube 403, and the electric control valve 308 is opened so that hot air is discharged from the air outlet pipe 404, so as to further dry the ground raw materials, and at this time, the air outlet pipe 404 is in a rotating state, so as to stir the raw materials, so as to prevent the raw materials from agglomerating, wherein the air outlet pipe 404 will contact the inclined surface of the triangular block 405 during the rotation process, thereby squeezing the triangular block 405 and causing it to move downward, thereby driving the screening drum 401 to move downward.

[0054] The screening mechanism also includes a fixing ring 406 fixedly connected to the inner wall of the processing box 2, an electromagnet 407 embedded in the fixing ring 406, a telescopic rod 408 fixedly connected to the top of the fixing ring 406, a positioning plate 409 fixedly connected to the top of the telescopic rod 408, and a connecting spring 4010 sleeved on the outside of the telescopic rod 408, wherein the upper and lower ends of the connecting spring 4010 are respectively fixedly connected to the bottom of the positioning plate 409 and the top of the fixing ring 406, wherein the positioning plate 409 is made of ferromagnetic material, and when the electromagnet 407 is energized and has magnetic force, it will adsorb the positioning plate 409 downward and compress the connecting spring 4010.

[0055] The screening mechanism also includes a transmission plate 4011 fixedly connected to the outer wall of the screening cylinder 401, a slide bar 4012 fixedly connected to the top of the transmission plate 4011, and a guide sleeve 4013 and a distance sensor 4014 fixedly connected to the inner top wall of the processing box 2. The guide sleeve 4013 is sleeved on the outer surface of the distance sensor 4014, wherein the inner diameter of the guide sleeve 4013 is equal to the outer diameter of the slide bar 4012. When the transmission plate 4011 is sleeved on the outer surface of the positioning plate 409, the central axis of the slide bar 4012 coincides with the central axis of the guide sleeve 4013.

[0056] By energizing the electromagnet 407 to make it have magnetic force, the electromagnet 407 will adsorb the positioning plate 409 to move downward and compress the connecting spring 4010, then place the screening drum 401 inside the processing box 2, and make the transmission plate 4011 sleeved on the outer surface of the positioning plate 409, at this time, the central axis of the slide bar 4012 coincides with the central axis of the guide sleeve 4013, and then the electromagnet 407 is powered off, at this time, the positioning plate 409 will drive the transmission plate 4011 and the screening drum 401 to move upward under the action of the connecting spring 4010, and the slide bar 4012 will be plugged into the inside of the guide sleeve 4013 to ensure that the screening drum 401 can only make a straight line movement in the vertical direction when subjected to external force, and then place the material receiving mechanism inside the processing box 2 and seal it;

[0057] When the grinding head 302 is working, the ground material will fall into the inside of the screening cylinder 401 under the action of gravity, and the material will be screened by the screen 402. At this time, the air outlet pipe 404 will rotate with the grinding head 302 under the action of the stirring pipe 403 and the transmission pipe, so as to break up the material. At this time, the electric control valve 308 is in an open state, so that hot air is discharged from the air outlet pipe 404, further improving the drying and breaking up effect of the material.

[0058] When the air outlet pipe 404 is rotating, it will contact the inclined surface of the triangular block 405, thereby squeezing the triangular block 405 and causing it to move downward, thereby driving the screening cylinder 401 to move downward and compressing the connecting spring 4010. When the air outlet pipe 404 is separated from the triangular block 405, the connecting spring 4010 will push the screening cylinder 401 upward, thereby driving the screen 402 to move upward and hit the screen 402, thereby achieving the vibration of the screen 402 and improving the screening effect.

[0059] During the screening process, large-sized materials remain inside the screening drum 401, thereby pressing the screening drum 401 downward. When the materials accumulate to a certain amount, the screening drum 401 will drop to a specified position, and the detection value of the distance sensor 4014 will reach a set value, thereby sounding an alarm and reminding the operator to replace the screening drum 401.

[0060] Embodiment 3

[0061] Please refer to FIG. 1, FIG. 2 and FIG. 5, the present invention is a thermal print head ceramic substrate glaze treatment, including a grinding chamber 1 and a treatment box 2 fixedly connected to the bottom of the grinding chamber 1, and also includes a grinding mechanism that penetrates the grinding chamber 1 and is rotatably connected to the top plate of the grinding chamber 1, a screening mechanism connected to the grinding mechanism, an adsorption mechanism disposed inside the treatment box 2, and a material receiving mechanism;

[0062] The grinding mechanism includes a grinding head 302 movably arranged inside the grinding chamber 1, a transmission pipe fixedly connected to the bottom of the grinding head 302, an electric heating wire 306 fixedly connected to the inside of the grinding head 302, and an air pump 309 fixedly connected to the top of the grinding chamber 1, and the air pump 309 is connected to the inside of the grinding head 302 through a pipeline;

[0063] The screening mechanism includes a screening cylinder 401 movably arranged inside the processing box 2, a screen 402 installed inside the screening cylinder 401, and triangular blocks 405 fixedly connected to the inner wall of the screening cylinder 401, wherein the triangular blocks 405 are in two groups and are mirror-distributed with the central axis of the screening cylinder 401 as the axis of symmetry;

[0064] The adsorption mechanism includes a movable shaft 503 movably disposed below the screening drum 401 , and a plurality of electrostatic adsorption plates 504 distributed on the outer surface of the movable shaft 503 in a ring array.

[0065] The adsorption mechanism further includes a threaded sleeve 501 threadedly connected to the bottom of the screening cylinder 401, and a support frame 502 fixedly connected to the inner wall of the threaded sleeve 501;

[0066] The movable shaft 503 is rotatably connected to the support frame 502 .

[0067] The adsorption mechanism also includes an air pump 505 and a drying box 506 fixedly connected to the outer wall of the processing box 2, a plurality of partitions 507 fixedly connected to the inner wall of the drying box 506 and distributed linearly and equidistantly, and a through hole opened on the top of the partition 507;

[0068] The interior of the drying box 506 is connected to the interior of the processing box 2 through a connecting pipe, and the connecting pipe mouth located inside the processing box 2 is inclined between the electrostatic adsorption plate 504, wherein there are several through holes, which are staggered on adjacent partitions 507. Preferably, the interior of the drying box 506 can be filled with desiccant, and the circulation time of air inside the drying box 506 is delayed through the provided partitions 507 and through holes, so as to improve the drying effect of the air, and the dried air will be transported to the interior of the processing box 2 and push the electrostatic adsorption plate 504 to rotate, so as to increase the contact area between the electrostatic adsorption plate 504 and the air, thereby improving the adsorption effect of dust.

[0069] The material receiving mechanism includes an electric push rod 601 fixedly connected to the inner bottom wall of the processing box 2 , a carrying plate 602 fixedly connected to the output end of the electric push rod 601 , and a material receiving box 603 engaged on the top of the carrying plate 602 .

[0070] During the screening process, small-sized materials and dust will pass through the screen 402 and fall downwards. At this time, the electrostatic adsorption plate 504 is in working state, thereby adsorbing dust to prevent dust from scattering. During this process, the vacuum pump 505 transports the water vapor inside the grinding chamber 1 to the inside of the drying box 506, and dries the air through the desiccant filled in the drying box 506. After that, the dried air will be transported to the inside of the processing box 2 and push the electrostatic adsorption plate 504 to rotate, so as to increase the contact area between the electrostatic adsorption plate 504 and the air, thereby improving the adsorption effect on dust;

[0071] When the screening drum 401 descends, the electrostatic adsorption plate 504 will be plugged into the inside of the material receiving box 603, so as to prevent the hot air from continuously blowing on the electrostatic adsorption plate 504, thereby preventing the electrostatic adsorption plate 504 from scattering dust due to rotation when it absorbs a lot of dust;

[0072] When the screening is completed, the qualified materials will fall into the material receiving box 603. By opening the processing box 2 and starting the electric push rod 601, the carrying plate 602 and the material receiving box 603 are driven to move downward until the electrostatic adsorption plate 504 is separated from the material receiving box 603, and then the material receiving box 603 is removed and the materials are collected. After that, the electromagnet 407 is started to drive the screening cylinder 401 to separate from the air outlet pipe 404, so that the screening cylinder 401 can be taken out, and the collected large-sized raw materials are transported to the grinding chamber 1 for re-grinding. The electrostatic adsorption plate 504 is threadedly connected to the screening cylinder 401 through the threaded sleeve 501, so that the electrostatic adsorption plate 504 can be easily disassembled and then easily cleaned;

[0073] Repeat the above operation, grind each raw material into powder, add appropriate amount of water to mix, form a uniform slurry, and then form glaze particles by spray granulation, pressing and drying.

[0074] Embodiment 4

[0075] As shown in FIG. 6 , the present invention is a glazing process for treating a glaze material of a ceramic substrate of a thermal print head, comprising the following steps:

[0076] S1, preparation stage: first use degreasing agent to brush and clean the screen, then apply photosensitive glue on the cleaned screen and let it dry, then stick the designed film on the screen, perform vacuum exposure treatment to harden the photosensitive glue, finally take out the film, wet both sides of the screen with cold water, spray clean and quickly dry;

[0077] S2, glaze treatment;

[0078] S3, glaze printing: place a preheated scraper on the screen and apply pressure through the scraper to squeeze the glaze from the mesh of the screen to the surface of the ceramic substrate. After the scraper is removed, a uniform glaze layer is formed on the surface of the ceramic substrate.

[0079] S4, finished product: after the glaze layer is dried, it is sintered at high temperature, cooled down and taken out of the furnace, and the finished product is obtained after natural cooling.

[0080] First, use a degreasing agent to brush and clean the screen, then apply photosensitive glue on the cleaned screen and let it dry, then stick the designed film negative on the screen, perform vacuum exposure treatment to harden the photosensitive glue, finally take out the film, wet both sides of the screen with cold water, spray clean and quickly dry, then mix the treated glaze with liquid oil or organic solvent to form a colorant, then transfer the pre-prepared colorant to the ceramic substrate through the capillary mesh of the screen, then pour the conductive slurry on one end of the screen, use a scraper to apply a certain amount of pressure on the slurry part on the screen plate, and move it to the other end of the screen to transfer the slurry evenly to the ceramic substrate, after printing, put the ceramic substrate into a drying furnace for drying, usually the temperature is controlled at 50-60℃, the duration is about 15 minutes, and finally the dried ceramic substrate enters the sintering furnace for sintering.

Claims

1. A method for treating glaze of a ceramic substrate of a thermal print head, comprising a grinding chamber (1) and a treatment box (2) fixedly connected to the bottom of the grinding chamber (1), characterized in that: It also includes a grinding mechanism that penetrates the grinding chamber (1) and is rotatably connected to the top plate of the grinding chamber (1), a screening mechanism connected to the grinding mechanism, an adsorption mechanism disposed inside the processing box (2), and a material receiving mechanism; The grinding mechanism comprises a grinding head (302) movably arranged inside the grinding chamber (1), a transmission pipe fixedly connected to the bottom of the grinding head (302), an electric heating wire (306) fixedly connected to the inside of the grinding head (302), and an air pump (309) fixedly connected to the top of the grinding chamber (1), wherein the air pump (309) is connected to the inside of the grinding head (302) through a pipeline; The screening mechanism comprises a screening cylinder (401) movably arranged inside the processing box (2), a screen (402) installed inside the screening cylinder (401), and a triangular block (405) fixedly connected to the inner side wall of the screening cylinder (401); The screening mechanism further comprises a stirring tube (403) fixedly connected to the outer wall of the transmission tube, and a plurality of air outlet pipes (404) linearly and evenly spaced at the bottom of the stirring tube (403); The screening mechanism further comprises a fixing ring (406) fixedly connected to the inner wall of the processing box (2), an electromagnet (407) embedded in the fixing ring (406), a telescopic rod (408) fixedly connected to the top of the fixing ring (406), a positioning plate (409) fixedly connected to the top of the telescopic rod (408), and a connecting spring (4010) sleeved on the outside of the telescopic rod (408); The screening mechanism further comprises a transmission plate (4011) fixedly connected to the outer wall of the screening cylinder (401), a sliding rod (4012) fixedly connected to the top of the transmission plate (4011), and a guide sleeve (4013) and a distance sensor (4014) fixedly connected to the inner top wall of the processing box (2), wherein the guide sleeve (4013) is sleeved on the outer surface of the distance sensor (4014); The adsorption mechanism comprises a movable shaft (503) movably arranged below the screening cylinder (401), and a plurality of electrostatic adsorption plates (504) distributed in a ring array on the outer surface of the movable shaft (503).

2. The glaze treatment of the thermal print head ceramic substrate according to claim 1, characterized in that: The grinding mechanism further comprises a rotating tube (301) penetrating through the top plate of the grinding chamber (1) and rotatably connected thereto, a driving motor (303) fixedly connected to the top of the grinding chamber (1), a main gear (304) fixedly connected to the outer side wall of the output end of the driving motor (303), and a driven gear (305) fixedly connected to the outer side wall of the rotating tube (301); The top of the grinding head (302) is fixedly connected to the bottom end of the rotating tube (301), and the main gear (304) is meshed with the driven gear (305).

3. The glaze treatment of the thermal print head ceramic substrate according to claim 2, characterized in that: The grinding mechanism further comprises a one-way valve (307) fixedly mounted inside the rotating tube (301), and an electric control valve (308) fixedly mounted inside the transmission tube.

4. The glaze treatment of the thermal print head ceramic substrate according to claim 1, characterized in that: The adsorption mechanism further comprises a threaded sleeve (501) threadedly connected to the bottom of the screening cylinder (401), and a support frame (502) fixedly connected to the inner wall of the threaded sleeve (501); The movable shaft (503) is rotatably connected to the support frame (502).

5. The glaze treatment of the thermal print head ceramic substrate according to claim 1, characterized in that: The adsorption mechanism further comprises an air pump (505) and a drying box (506) fixedly connected to the outer wall of the processing box (2), a plurality of partitions (507) fixedly connected to the inner wall of the drying box (506) and distributed at equal intervals in a linear manner, and a through hole opened on the top of the partition (507); The interior of the drying box (506) is connected to the interior of the processing box (2) via a connecting pipe.

6. The glaze treatment of the thermal print head ceramic substrate according to claim 1, characterized in that: The material receiving mechanism comprises an electric push rod (601) fixedly connected to the inner bottom wall of the processing box (2), a supporting plate (602) fixedly connected to the output end of the electric push rod (601), and a material receiving box (603) engaged with the top of the supporting plate (602).

7. A glazing process for treating a ceramic substrate of a thermal print head, characterized in that: The thermal print head ceramic substrate glaze treatment according to any one of claims 1 to 6 comprises the following steps: S1. Preparation stage: First, use a degreasing agent to brush and clean the screen, then apply photosensitive glue on the cleaned screen and let it dry, then stick the designed film on the screen. Perform vacuum exposure to harden the photosensitive adhesive, then remove the film, wet both sides of the screen with cold water, spray clean and quickly dry; S2, glaze treatment; S3, glaze printing: place a preheated scraper on the screen and apply pressure through the scraper to squeeze the glaze from the mesh of the screen to the surface of the ceramic substrate. After the scraper is removed, a uniform glaze layer is formed on the surface of the ceramic substrate. S4, drying and sintering: After the glaze layer is dry, it is sintered at high temperature, cooled down and taken out of the furnace, and the finished product is obtained after natural cooling.

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