A color-changing machine pressing process for the top surface of wood-grained tiles

Abstract

The present invention relates to the field of printing technology, specifically to a color-stirring machine pressing process for the top surface of a wood-grain brick, comprising first clamping the wood-grain brick on a brick support platform, and when the brick support platform moves to the bottom of the screen group, stopping the servo motor, and starting the electric cylinder to drive the screen group and the coating group to synchronously drop to the top of the brick support platform; then starting the forward and reverse motor to drive the transmission plate to drive the ink box to move to the front end of the screen group; at the same time, the ink roller pushes the sealing box roller to dip the ink, and rolls and moves on the screen group; then starting the suction pump to pump the colored glaze into the glaze spray box and spray it out, and spraying it unevenly on the wood-grain brick through glaze outlet holes of different sizes to form a color-stirring surface. The present invention uses the ink roller to contact the sealing box roller with the back pressure after the ink box is lowered to release the ink, and the ink is applied to the ink roller by rolling the ink roller, and the ink roller is then applied to the screen printing net to print the pattern on the top surface of the wood-grain brick. The ink output is controllable and meets the printing requirements, thereby achieving the effect of saving ink.

Description

Technical Field

[0001] The invention relates to the technical field of printing, and in particular to a color-changing machine pressing process for the top surface of a wood-grain tile. Background Art

[0002] Application number CN202210939963.2 discloses an anti-shake automatic centering track for the workbench of a silk screen printing machine. Through the coordinated operation of a fixed block, a movable plate, a clamping block, a slider, a scraper, a workbench body, a slide rail, an elastic plate, a mounting block, and bristles, the dust and debris on the surface of the slide rail can be cleaned to prevent dust from entering the gap when the workbench moves and is centered, which can effectively prevent the workbench from shaking during subsequent printing, thereby improving the printing effect in disguise; through the coordinated operation of a fixed plate, a transmission rod, a lower magnet, an upper magnet, and a collecting plate, the scraper will not adhere to ink, and then no excess ink will enter the printing plate during the next printing, thereby preventing excess ink from causing uneven printing.

[0003] However, the amount of ink in the above-mentioned patent cannot be accurately controlled, resulting in excess ink accumulating at both ends of the printing plate after each scraper scraping, which not only causes insufficient utilization of the ink, but also affects the scraper's ink adhesion. It sets up a complex structure of the fixed plate, transmission rod, lower magnet, upper magnet, and collection plate to cooperate with each other to eliminate the scraper from not sticking to the ink, but it still does not solve the problem of ink accumulation at both ends of the printing plate. Summary of the invention

[0004] In order to overcome the defects in the prior art, the purpose of the present invention is to provide a color-changing machine pressing process for the top surface of wood-grain tiles to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides a color-changing machine pressing process for the top surface of a wood-grain tile, comprising the following steps:

[0006] S1, first clamp the wood-grain brick on the brick support platform, and then start the servo motor to drive the brick support platform to circulate on the track platform;

[0007] S2, when the brick support platform moves to the bottom of the screen group, the servo motor is stopped, and the electric cylinder is started to drive the screen group and the coating group to synchronously drop to the top of the brick support platform;

[0008] S3, restart the forward and reverse motor to drive the transmission plate to drive the ink box to move to the front end of the screen group;

[0009] S4, at the same time, the ink roller pushes the sealing roller to dip into the ink, and rolls and moves on the screen group;

[0010] S5, then start the electric cylinder and the forward and reverse motor to drive the screen group and the paint group to reset;

[0011] S6, restart the servo motor to drive the silk-screened wood-grain brick to continue moving to the bottom of the glaze spraying box;

[0012] S7, then start the suction pump to pump the colored glaze into the glaze spraying box and spray it out, and spray it unevenly onto the wood grain brick through glaze outlet holes of different sizes to form a colorful surface;

[0013] S8, repeating S1-S7, and printing patterns on a plurality of wood grain bricks in sequence to form a colorful surface;

[0014] The colorful machine pressing structure of the wood-grain brick top surface includes a track platform and a plurality of brick supporting platforms arranged at equal intervals on the top surface thereof, servo motors are arranged in the curved ends of the track platform, a silk screen mechanism and a glaze spraying mechanism are arranged at intervals on the same side of the track platform, and the silk screen mechanism includes a support frame, a silk screen group arranged on the top of the support frame toward one side of the track platform, a coating group arranged above the silk screen group, an electric cylinder for driving the silk screen group and the coating group to rise and fall synchronously, and a forward and reverse motor for driving the coating group to move above the silk screen group;

[0015] The coating assembly includes an ink box, a transmission plate welded to the back of the ink box and penetrating the support frame, a sealing roller embedded in the bottom port of the ink box, and an ink roller rotatably connected to the inner end of the transmission plate, wherein the ink roller is located below and behind the sealing roller;

[0016] The glaze spraying mechanism comprises a material storage box, a glaze spraying box suspended above one side of the track platform and a suction pump installed on the top of the material storage box. The bottom surface of the glaze spraying box is provided with a plurality of glaze outlet holes of different sizes.

[0017] As a further improvement of the present technical solution, the track platform is a rounded rectangular ring structure and a double guide ring is welded on the center line of its top surface. A toothed belt is sleeved inside the double guide ring, and the top end of the output shaft of the servo motor is coaxially connected to a pulley meshing with the toothed belt.

[0018] As a further improvement of the present technical solution, an anti-slip platform is bonded to the middle part of the top surface of the brick supporting platform, a limit block that is engaged with the wood-grain brick is welded at the corner of the top surface of the brick supporting platform, and a cylinder is welded to the middle part of the bottom surface of the brick supporting platform, and the cylinder is plugged into the double guide ring and bonded to the toothed belt.

[0019] As a further improvement of the technical solution, long rollers are symmetrically embedded on the bottom surface of the brick supporting platform and located on the outer side of the double guide rail circle, and short rollers are symmetrically embedded on the bottom surface of the brick supporting platform and located on the inner side of the double guide rail circle.

[0020] As a further improvement of the present technical solution, the screen group includes a screen frame and a screen printing screen embedded in the top surface of the screen frame, a groove connected to the screen printing screen is provided at the edge of the top surface of the inner hole of the screen frame, and a block inserted into the support frame is provided at the rear end corner of the screen frame.

[0021] As a further improvement of the technical solution, the electric cylinder is installed on the top of the support frame and its output shaft passes through the inside of the support frame and is welded with a pressure plate. Pressure columns are vertically welded at both ends of the pressure plate. The bottom end of the pressure column is sleeved with a sleeve. A compression spring is placed in the sleeve, and the sleeve is tightly plugged into the block.

[0022] As a further improvement of the technical solution, a clamping sleeve that is engaged with the transmission plate is symmetrically welded at the lower middle part of the pressure plate, the forward and reverse motors are installed behind the top surface of the support frame and are coaxially connected to a gear column, and a number of tooth grooves are evenly spaced on the side of the transmission plate, and the number of tooth grooves are meshed with the gear column.

[0023] As a further improvement of the present technical solution, waist-shaped holes are symmetrically provided on both sides of the bottom end of the ink box, slots are provided above and below the waist-shaped holes, and the slots pass through the bottom surface of the ink box, the convex shafts at both ends of the sealing roller are plugged into the waist-shaped holes, a pressure block is plugged into the slot, a spring is bonded to the top surface of the pressure block, and the pressure block is clamped on the top surface of the convex shaft.

[0024] As a further improvement of the technical solution, support rods are sleeved on both ends of the ink roller, a long shaft passing through the side of the transmission plate is inserted between the top ends of a pair of support rods, and a baffle is welded on the side of the transmission plate and behind the long shaft.

[0025] As a further improvement of the present technical solution, the interior of the support frame is a hollow structure and has a number of reinforcing plates welded at equal intervals, the top of the support frame is facing one side of the track platform and symmetrically provided with slide grooves above the reinforcing plates, and a plate groove is provided in the middle of the same side of the support frame and above the slide groove.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. In the colorful machine pressing process of the top surface of the wood-grain brick, a track table and a double guide ring are set up, and a servo motor is used to drive the toothed belt in the double guide ring to move, and at the same time drive several brick support tables to alternately circulate on the track table, supporting the wood-grain bricks to pass under the silk-screen printing mechanism and the spraying mechanism, and are printed with patterns and sprayed with glaze in turn to form a colorful surface, making the silk-screen printing of wood-grain bricks like assembly line processing, thereby improving production efficiency.

[0028] 2. In the color-changing machine pressing process of the top surface of the wood-grain tile, a liftable ink box is set on the silk-screen screen, and a sealing roller is set in the bottom port of the ink box. After the ink box is lowered, the ink roller contacts the screen frame and rotates upward, and at the same time contacts the sealing roller to unseal the bottom port of the ink box to discharge ink. The sealing roller is rotated by the rolling of the ink roller, and the ink is applied to the ink roller, which is then applied to the silk-screen screen to print the pattern on the top surface of the wood-grain tile. The ink output is controllable and meets the printing requirements, thereby achieving the effect of saving ink. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the figures are only schematic, used to help understand the present invention, and are not specifically limited to the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to the teachings of the present invention.

[0030] Figure 1 It is a schematic diagram of the overall assembly structure of the present invention;

[0031] Figure 2 This is a disassembled diagram of the track platform of the present invention;

[0032] Figure 3 This is a disassembled view of the brick supporting platform of the present invention;

[0033] Figure 4 It is a schematic diagram of the assembly structure of the screen printing mechanism of the present invention;

[0034] Figure 5 It is a schematic diagram of the assembly structure of the glaze spraying mechanism of the present invention;

[0035] Figure 6 It is a schematic diagram of the structure of the glaze spray box of the present invention;

[0036] Figure 7 It is a schematic diagram of the back structure of the screen printing mechanism of the present invention;

[0037] Figure 8 It is a side view of the screen printing mechanism of the present invention;

[0038] Fig. 9 It is a schematic diagram of the assembly structure of the screen group and the coating group of the present invention;

[0039] Fig.10 It is a schematic diagram of the structure of the wire mesh assembly of the present invention;

[0040] Fig.11 It is a schematic diagram of the coating assembly structure of the present invention;

[0041] Fig.12 It is a schematic diagram of the support frame structure of the present invention;

[0042] Fig.13 This is a schematic diagram of the assembly structure of the output shaft end of the electric cylinder of the present invention;

[0043] Fig.14 It is a schematic diagram of the structure of the wire mesh group of the present invention;

[0044] Fig.15 It is a partial exploded view of the coating assembly of the present invention;

[0045] Fig.16 This is a schematic diagram of the ink roller assembly structure of the present invention;

[0046] Fig.17 It is a schematic diagram of the assembly structure of the box sealing roller of the present invention;

[0047] Fig.18 For the present invention Fig.15 A is an enlarged structural diagram of FIG.

[0048] The meaning of each number in the figure is:

[0049] 100, track table; 101, double guide ring; 110, brick support table; 111, anti-slip table; 112, limit block; 113, long roller; 114, short roller; 120, servo motor; 130, pulley; 140, toothed belt;

[0050] 200, screen printing mechanism; 210, support frame; 211, reinforcing plate; 212, slide groove; 213, plate groove; 220, screen group; 221, screen frame; 2211, sink groove; 222, screen printing net;

[0051] 230, coating group; 231, ink box; 2311, transmission plate; 2312, tooth groove; 2313, stop bar; 2314, waist-shaped hole; 2315, slot; 232, sealing roller; 2321, pressure block; 2322, spring; 233, ink roller; 2331, support rod;

[0052] 240, electric cylinder; 241, pressure plate; 242, ferrule; 243, pressure column; 244, sleeve; 245, pressure spring; 250, forward and reverse motor; 251, gear column;

[0053] 300, glaze spraying mechanism; 310, material storage box; 320, glaze spraying box; 321, glaze outlet hole; 330, suction pump. DETAILED DESCRIPTION

[0054] The details of the present invention can be more clearly understood in conjunction with the accompanying drawings and the description of the specific embodiments of the present invention. However, the specific embodiments of the present invention described herein are only used for the purpose of explaining the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, technicians can conceive of any possible variations based on the present invention, which should be regarded as falling within the scope of the present invention. The terms "installation" and "connection" should be understood in a broad sense, and can be directly connected or indirectly connected through an intermediate medium.

[0055] The terms "central axis", "longitudinal", "lateral", "length", "width", "thickness", "vertical", "horizontal", "front", "back", "up", "down", "left", "right", "top", "bottom", "inside", "outside" and the like used herein to indicate positions or positional relationships are based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, in the description of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0056] See also Figure 1-Figure 18 As shown, the present invention provides a color-changing machine pressing process for the top surface of a wood-grain tile, comprising the following steps:

[0057] S1, first clamp the wood-grain brick on the brick supporting platform 110, and then start the servo motor 120 to drive the brick supporting platform 110 to circulate on the track platform 100;

[0058] S2, when the brick supporting platform 110 moves to the bottom of the screen group 220, the servo motor 120 is stopped, and the electric cylinder 240 is started to drive the screen group 220 and the coating group 230 to synchronously drop to the top of the brick supporting platform 110;

[0059] S3, restart the forward and reverse motor 250 to drive the transmission plate 2311 to drive the ink box 231 to move to the front end of the screen group 220;

[0060] S4, at the same time, the ink roller 233 pushes the sealing roller 232 to dip into the ink, and rolls on the screen group 220 to print the pattern on the screen onto the top surface of the wood grain tile;

[0061] S5, then start the electric cylinder 240 and the forward and reverse motor 250 to drive the screen group 220 and the coating group 230 to reset, ready for the next printing;

[0062] S6, restart the servo motor 120 to drive the silk-screened wood-grain brick to continue to move to the bottom of the glaze spraying box 320;

[0063] S7, then start the suction pump 330 to pump the colored glaze into the glaze spraying box 320 and spray it out, and spray it unevenly on the wood-grain brick through the glaze outlet holes 321 of different sizes to form a colorful surface. Since the thickness and range of the colored glaze attached to the wood-grain brick pattern are different, the refractive index and direction of the light are different, thus producing a color changing effect;

[0064] S8, repeating S1-S7, and printing patterns on a plurality of wood grain tiles in sequence to form a colorful surface.

[0065] Specifically, the color-changing machine pressing structure of the wood-grain brick top surface includes a track platform 100 and a plurality of brick supporting platforms 110 arranged at equal intervals on its top surface, a servo motor 120 is arranged in the curved ends of the track platform 100, and a silk-screen mechanism 200 and a glaze spraying mechanism 300 are arranged at intervals on the same side of the track platform 100;

[0066] The screen printing mechanism 200 includes a support frame 210, a screen group 220 disposed on the top of the support frame 210 toward the side of the track platform 100, a coating group 230 disposed above the screen group 220, an electric cylinder 240 for driving the screen group 220 and the coating group 230 to rise and fall synchronously, and a forward and reverse motor 250 for driving the coating group 230 to move above the screen group 220;

[0067] The coating set 230 includes an ink box 231, a transmission plate 2311 welded to the back of the ink box 231 and penetrating the support frame 210, a sealing roller 232 embedded in the bottom end of the ink box 231, and an ink roller 233 rotatably connected to the inner end of the transmission plate 2311, and the ink roller 233 is located below and behind the sealing roller 232.

[0068] In addition, the bottom port of the ink box 231 is blocked by the sealing roller 232 in the normal state. When the ink roller 233 touches the screen group 220 when it descends, it presses the sealing roller 232 upward to open a gap. As the ink roller 233 rolls on the screen group 220, it also drives the sealing roller 232 to rotate, so that the ink adheres to the ink roller 233 and rolls onto the screen group 220 to print the pattern on the top surface of the wood grain tile.

[0069] In addition, the glaze spraying mechanism 300 includes a material storage box 310, a glaze spraying box 320 suspended above one side of the track platform 100, and a suction pump 330 installed on the top of the material storage box 310. The bottom surface of the glaze spraying box 320 is provided with a plurality of glaze outlet holes 321 of different sizes.

[0070] The feed pipe of the suction pump 330 extends to above the bottom of the storage box 310, and the front end of the discharge pipe is connected and welded to the middle of the top surface of the glaze spray box 320. A thin plate is welded between the glaze spray box 320 and the storage box 310 to support the glaze spray box 320 suspended above the track platform 100.

[0071] Furthermore, the track platform 100 is a rounded rectangular ring structure and a double guide ring 101 is welded on the center line of its top surface. A toothed belt 140 is sleeved inside the double guide ring 101. The top end of the output shaft of the servo motor 120 is coaxially connected to a pulley 130 meshing with the toothed belt 140.

[0072] An anti-skid platform 111 is bonded to the middle of the top surface of the brick supporting platform 110, and a thin sheet of silicone material is bonded to the top surface of the anti-skid platform 111 to achieve an anti-skid effect; limit blocks 112 that are engaged with wood-grain tiles are welded at the corners of the top surface of the brick supporting platform 110 to position and place the wood-grain tiles; a cylinder is welded to the middle of the bottom surface of the brick supporting platform 110, and the cylinder is plugged into the double guide ring 101 and bonded to the toothed belt 140, so that the toothed belt 140 can be used to drive the brick supporting platform 110 to move synchronously.

[0073] In addition, long rollers 113 are symmetrically embedded on the bottom surface of the brick supporting platform 110 and located on the outer side of the double guide ring 101, and short rollers 114 are symmetrically embedded on the bottom surface of the brick supporting platform 110 and located on the inner side of the double guide ring 101, so that the brick supporting platform 110 can move smoothly at the bending part of the double guide ring 101, ensuring the circular motion of the brick supporting platform 110.

[0074] Specifically, the screen set 220 includes a screen frame 221 and a screen printing screen 222 embedded in the top surface of the screen frame 221. A sink 2211 for engaging with the screen printing screen 222 is provided at the edge of the top surface of the inner hole of the screen frame 221, so that the screen printing screen 222 can be replaced easily and placed stably.

[0075] A block inserted into the support frame 210 is provided at the rear end corner of the net frame 221. The interior of the support frame 210 is a hollow structure and a number of reinforcing plates 211 are welded at equal intervals, so that the overall structure of the support frame 210 is stable; the top of the support frame 210 is facing the side of the track platform 100 and is symmetrically provided with slide grooves 212 above the reinforcing plates 211. The slide grooves 212 extend vertically, and the above-mentioned blocks are plugged into and slidable in the slide grooves 212, so that the net frame 221 can move freely up and down.

[0076] Furthermore, the electric cylinder 240 is installed on the top of the support frame 210 and its output shaft passes through the inside of the support frame 210, and is welded with a pressure plate 241, and pressure columns 243 are vertically welded at both ends of the pressure plate 241, and a sleeve 244 is sleeved at the bottom end of the pressure column 243, and a compression spring 245 is placed in the sleeve 244, and the sleeve 244 is tightly plugged with the block;

[0077] The top end of the sleeve 244 is tightly fitted with an annular cover for blocking the boss at the bottom end of the pressure column 243, so that when the pressure column 243 rises, it can drive the sleeve 244 and the screen frame 221 to rise synchronously.

[0078] It is worth noting that a sleeve 242 is symmetrically welded at the lower middle of the pressing plate 241 and is engaged with the transmission plate 2311, so as to support the ink box 231 to rise and fall with the pressing plate 241; the forward and reverse motor 250 is installed at the rear of the top surface of the support frame 210 and is coaxially connected with a gear column 251, and a plurality of tooth grooves 2312 are evenly spaced on the side of the transmission plate 2311, and the plurality of tooth grooves 2312 are meshed with the gear column 251, so as to drive the ink box 231 to move horizontally forward and backward;

[0079] A plate slot 213 is provided in the middle of the same side of the support frame 210 and above the slide slot 212. The transmission plate 2311 is plugged into the plate slot 213 and can slide up and down, so that the ink box 231 can be raised and lowered freely.

[0080] When the screen frame 221 descends to the reinforcing plate 211, the pressure column 243 continues to descend, driving the ink roller 233 to touch the screen group 220 first. As the ink box 231 continues to descend, the ink roller 233 will press the sealing roller 232 upward to open a gap. At this time, the electric cylinder 240 is stopped and the forward and reverse motor 250 is started to drive the ink box 231 and the ink roller 233 to roll on the screen group 220, which also drives the sealing roller 232 to rotate, so that the ink adheres to the ink roller 233 and can be rolled onto the screen group 220 to print the pattern on the top surface of the wood grain tile.

[0081] It is worth noting that waist-shaped holes 2314 are symmetrically opened on both sides of the bottom of the ink box 231, and slots 2315 are opened above and below the waist-shaped holes 2314, and the slots 2315 penetrate the bottom surface of the ink box 231, and the convex shafts at both ends of the sealing roller 232 are plugged into the waist-shaped holes 2314, so that the sealing roller 232 can rotate and move up and down;

[0082] A pressure block 2321 is inserted into the slot 2315, and a spring 2322 is bonded to the top surface of the pressure block 2321. The pressure block 2321 is clamped on the top surface of the convex shaft, and the spring 2322 presses the sealing roller 232 to seal the inner wall of the bottom port of the ink box 231 to form a barrier; the bottom surface of the pressure block 2321 is in an arc shape, so that it is clamped and sealed with the convex shaft to prevent ink leakage.

[0083] In addition, support rods 2331 are sleeved on both ends of the ink roller 233, and a long shaft running through the side of the transmission plate 2311 is inserted between the top ends of a pair of support rods 2331, so as to support the ink roller 233 to move synchronously with the transmission plate 2311, and at the same time, it can rotate to contact the sealing roller 232; a retaining bar 2313 is welded on the side of the transmission plate 2311 and located behind the long shaft, which is used to support the support rod 2331 to prevent it from rotating backward, keep the ink roller 233 placed below the rear of the sealing roller 232, and then rotate upward to contact the sealing roller 232 to unseal the bottom port of the ink box 231 and discharge ink, and the sealing roller 232 is driven to rotate by the rolling of the ink roller 233, and the ink is applied to the ink roller 233, and the ink roller 233 is then applied to the silk screen 222 to print the pattern on the top surface of the wood grain tile.

[0084] It should be noted that the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A color-changing machine pressing process for the top surface of a wood-grain tile, characterized in that: The following steps are involved: S1, first clamp the wood-grain brick on the brick supporting platform (110), then start the servo motor (120) to drive the brick supporting platform (110) to circulate on the track platform (100); S2, when the brick supporting platform (110) moves to the position directly below the screen group (220), the servo motor (120) is stopped, and the electric cylinder (240) is started to drive the screen group (220) and the coating group (230) to synchronously descend to the top of the brick supporting platform (110); S3, restarting the forward and reverse motor (250) to drive the transmission plate (2311) to drive the ink box (231) to move to the front end of the screen group (220); S4, at the same time, the ink roller (233) pushes open the sealing roller (232) to pick up ink, and rolls and moves on the screen group (220); S5, then starting the electric cylinder (240) and the forward and reverse motor (250) to drive the screen group (220) and the coating group (230) to reset; S6, restarting the servo motor (120) to drive the silk-screened wood-grained tiles to continue to move to the bottom of the glaze spraying box (320); S7, then start the suction pump (330) to pump the colored glaze into the glaze spraying box (320) and spray it out, and spray it unevenly onto the wood-grained brick through the glaze outlet holes (321) of different sizes to form a colorful surface; S8, repeating S1-S7, and printing patterns on a plurality of wood grain bricks in sequence to form a colorful surface; The color-changing machine pressing structure of the wood-grain brick top surface comprises a track platform (100) and a plurality of brick supporting platforms (110) arranged at equal intervals on the top surface thereof, servo motors (120) are arranged in the curved ends of the track platform (100), a screen printing mechanism (200) and a glaze spraying mechanism (300) are arranged at intervals on the same side of the track platform (100), and the screen printing mechanism (200) comprises a support frame (210), a screen group (220) arranged at the top of the support frame (210) facing the side of the track platform (100), a coating group (230) arranged above the screen group (220), an electric cylinder (240) for driving the screen group (220) and the coating group (230) to rise and fall synchronously, and a forward and reverse motor (250) for driving the coating group (230) to move above the screen group (220); The coating assembly (230) comprises an ink box (231), a transmission plate (2311) welded to the back of the ink box (231) and penetrating the support frame (210), a sealing roller (232) embedded in the bottom end of the ink box (231), and an ink roller (233) rotatably connected to the inner end of the transmission plate (2311), wherein the ink roller (233) is located below and behind the sealing roller (232); The glaze spraying mechanism (300) comprises a material storage box (310), a glaze spraying box (320) suspended above one side of the track platform (100), and a suction pump (330) installed on the top of the material storage box (310); a plurality of glaze outlet holes (321) of different sizes are provided on the bottom surface of the glaze spraying box (320); The track platform (100) is in the form of a rounded rectangular ring structure and has a double guide ring (101) welded on the center line of its top surface. A toothed belt (140) is sleeved inside the double guide ring (101). The top end of the output shaft of the servo motor (120) is coaxially connected to a pulley (130) meshing with the toothed belt (140).

2. The color-changing machine pressing process for the top surface of wood-grain tiles according to claim 1 is characterized in that: An anti-slip platform (111) is bonded to the middle of the top surface of the brick supporting platform (110), a limit block (112) for engaging with the wood-grain brick is welded at the corner of the top surface of the brick supporting platform (110), and a cylinder is welded to the middle of the bottom surface of the brick supporting platform (110), and the cylinder is plugged into the double guide ring (101) and bonded to the toothed belt (140).

3. The color-changing machine pressing process for the top surface of wood-grain tiles according to claim 2 is characterized in that: A long roller (113) is symmetrically embedded on the bottom surface of the brick supporting platform (110) and located outside the double guide rail circle (101), and a short roller (114) is symmetrically embedded on the bottom surface of the brick supporting platform (110) and located inside the double guide rail circle (101).

4. The color-changing machine pressing process for the top surface of wood-grain tiles according to claim 1 is characterized in that: The screen assembly (220) comprises a screen frame (221) and a screen printing screen (222) embedded in the top surface of the screen frame (221); a sink groove (2211) for engaging with the screen printing screen (222) is provided at the edge of the top surface of the inner hole of the screen frame (221); and a block inserted into the support frame (210) is provided at the rear end corner of the screen frame (221).

5. The color-changing machine pressing process for the top surface of wood-grain tiles according to claim 4 is characterized in that: The electric cylinder (240) is installed on the top of the support frame (210) and its output shaft passes through the inside of the support frame (210) and is welded with a pressure plate (241). Pressure columns (243) are vertically welded at both ends of the pressure plate (241). The bottom end of the pressure column (243) is sleeved with a sleeve (244). A compression spring (245) is placed in the sleeve (244). The sleeve (244) is tightly plugged into the block.

6. The color-changing machine pressing process for the top surface of wood-grain tiles according to claim 5 is characterized in that: A clamping sleeve (242) is symmetrically welded at the lower middle part of the pressure plate (241) and is clamped with the transmission plate (2311). The forward and reverse motor (250) is installed at the rear of the top surface of the support frame (210) and is coaxially connected with the gear column (251). A plurality of tooth grooves (2312) are evenly spaced on the side surface of the transmission plate (2311), and the plurality of tooth grooves (2312) are meshed with the gear column (251).

7. The color-changing machine pressing process for the top surface of wood-grain tiles according to claim 1 is characterized in that: The bottom end of the ink box (231) is symmetrically provided with waist-shaped holes (2314), and slots (2315) are provided above and below the waist-shaped holes (2314). The slots (2315) penetrate the bottom surface of the ink box (231). The convex shafts at both ends of the box sealing roller (232) are plugged into the waist-shaped holes (2314), and a pressure block (2321) is plugged into the slots (2315). A spring (2322) is bonded to the top surface of the pressure block (2321), and the pressure block (2321) is clamped on the top surface of the convex shaft.

8. The color-changing machine pressing process for the top surface of wood-grain tiles according to claim 1 is characterized in that: Support rods (2331) are sleeved at both ends of the ink roller (233), a long shaft penetrating the side of the transmission plate (2311) is inserted between the top ends of a pair of support rods (2331), and a blocking bar (2313) is welded on the side of the transmission plate (2311) and behind the long shaft.

9. The color-changing machine pressing process for the top surface of wood-grain tiles according to claim 1 is characterized in that: The interior of the support frame (210) is a hollow structure and is welded with a plurality of reinforcing plates (211) at equal intervals. A slide groove (212) is symmetrically provided on the top of the support frame (210) facing one side of the track platform (100) and located above the reinforcing plates (211). A plate groove (213) is provided in the middle of the same side of the support frame (210) and located above the slide groove (212).

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