Print platform height adjustment mechanism

Abstract

The application discloses a printing platform height adjusting mechanism and relates to the technical field of printing platforms. The printing platform height adjusting mechanism comprises a rack, a portal frame arranged on the top of the rack, vertical adjusting components arranged on the two sides of the rack and used for adjusting the height of the portal frame, a driving block movably arranged on the inner side of the portal frame, a lateral driving component arranged on the portal frame and used for driving the lateral movement of the driving block, a printing head arranged on one side of the driving block, a moving plate movably arranged on the top of the rack, and a screw driving component arranged on the rack and used for driving the movement of the moving plate. The sliding plate is driven to move vertically on the rectangular column through the vertical driving component. When the sliding plate moves to a suitable position, the fine adjustment force applied by the stand column to the printing platform makes the printing platform reach a horizontal state. The printing platform is continuously adjusted through a laser level meter until the printing platform is in a horizontal state, so that problems such as layer misregistration or uneven surface in the printing process are avoided.

Description

Technical Field

[0001] This invention relates to the field of printing platform technology, specifically to a printing platform height adjustment mechanism. Background Technology

[0002] The core of color printing is to convert the RGB / CMYK color data in a digital image into visible color blocks on a real medium through physical, chemical, or optical processes. In the color printing technology system, the printing platform is the decisive factor in determining the baseline quality, the upper limit efficiency, and the cost ceiling. The printing platform is the core hardware system that carries the media, transmits power, and controls precision; its performance directly affects the final quality, efficiency, and cost of color printing. If color printing is likened to "cooking," the platform is the combination of "stove + pot + knives"—a defect in any link will lead to a failed "dish" (output effect).

[0003] Chinese patent document CN219256811U discloses a printing platform height adjustment structure, including a support base, a height adjustment base, a height adjustment component, a fixed base, a rotating shaft, and a fixing element. When the wheel plate of the second height adjustment element is rotated, the first inclined surface of the first height adjustment element moves upward along the second inclined surface of the second height adjustment element, and pushes the first height adjustment element upward, thereby causing the support base to move upward, thereby adjusting the height of the support base to achieve the required height of the printing platform.

[0004] In practical use, the aforementioned patent adjusts the height of the printing platform by rotating a wheel plate, causing the first inclined surface of the first height adjusting element to move upward along the second inclined surface of the second height adjusting element, thereby pushing the first height adjusting element upward. However, in use, the lack of horizontal calibration of the printing platform can result in uneven surfaces on the printed object, affecting its appearance quality. Summary of the Invention

[0005] To address the aforementioned issues, a printing platform height adjustment mechanism is provided. By incorporating a leveling component for calibrating the printing platform, this mechanism resolves the technical problem that the lack of leveling calibration of the printing platform can lead to uneven surfaces on printed objects.

[0006] To address the problems of existing technologies, this invention provides a printing platform height adjustment mechanism, including a frame. A gantry is mounted on the top of the frame, and vertical adjustment components for adjusting the height of the gantry are mounted on both sides of the frame. A drive block is movably mounted on the inner side of the gantry, and a horizontal drive component for driving the drive block to move laterally is mounted on the gantry. A print head is mounted on one side of the drive block. A movable plate is also movably mounted on the top of the frame, and a threaded drive component for driving the movable plate to move is mounted on the frame. A printing platform is mounted on the movable plate, and a height adjustment component for adjusting the height of the printing platform is mounted between the movable plate and the printing platform. Horizontal plates are mounted on both sides of the movable plate, and a horizontal calibration component for calibrating the printing platform is mounted on the top of the horizontal plates.

[0007] Preferably, the horizontal calibration component includes rectangular columns, a sliding plate, and upright columns; the rectangular columns are disposed on the top of the horizontal plate, there are four rectangular columns respectively located at the four corners of the printing platform, the printing platform is provided with openings for the rectangular columns to move, and a top plate is provided on the top of the rectangular columns; the sliding plate is slidably disposed on the rectangular columns, and the top plate is provided with a vertical driving component for driving the sliding plate to move; the upright columns are disposed at the bottom of the sliding plate, and one end of the upright columns is connected to the top of the printing platform.

[0008] Preferably, the vertical drive component includes a first rack, a connecting frame, and a rotating rod; the first rack is disposed on the top of the sliding plate; the connecting frame is disposed on the top of the top plate; the rotating rod is disposed on the inner side of the connecting frame, a first gear is disposed on the rotating rod, one end of the rotating rod extends outward through one side of the connecting frame, a turntable is disposed at the extended end of the rotating rod, and the first gear meshes with the first rack.

[0009] Preferably, a guide post is provided on the top of the horizontal plate on one side of the rectangular column, and one end of the sliding plate is slidably disposed on the guide post.

[0010] Preferably, the height adjustment assembly includes an adjustment box, connecting columns, a first motor, and a third gear. The adjustment box is mounted on a movable plate, and a first partition is provided inside the adjustment box. A second partition is provided at the bottom of the first partition inside the adjustment box. The first and second partitions divide the adjustment box into a first cavity, a second cavity, and a third cavity from top to bottom. A threaded column is provided at the top of the first partition in the first cavity, and a threaded sleeve is threaded onto the threaded column. The top of the threaded sleeve is connected to the bottom of the printing platform. Four connecting columns are provided and located in the second cavity. One end of each connecting column is connected to the bottom of the threaded column. A first sprocket is provided on each of the four sets of connecting columns, and a first chain is fitted onto each of the four sets of first sprockets. One end of each connecting column extends through the second partition into the third cavity, and the third gear is located at the extended end of the connecting column. The first motor is located in the second cavity, and a second gear is provided at the output end of the first motor extending through the second partition into the third cavity. The second gear meshes with the third gear.

[0011] Preferably, the threaded drive component includes a mounting bracket, a second threaded rod, and a third motor; the mounting bracket is mounted on a frame, the second threaded rod is disposed within the mounting bracket, a movable block is threadedly connected to the second threaded rod, the top of the movable block is connected to the bottom of a movable plate; one end of the second threaded rod extends outward through one side of the mounting bracket, and a second sprocket is disposed at the extended end of the second threaded rod; the third motor is mounted on the mounting bracket, a third sprocket is disposed at the output end of the third motor, and a second chain is sleeved on the second sprocket and the third sprocket.

[0012] Preferably, slide rails are provided on both sides of the second threaded rod on the frame, and the bottom of the movable plate is slidably disposed on the slide rails.

[0013] Preferably, the vertical adjustment component includes a fourth motor, a crossbar, a side plate, an adjusting plate, and a fourth gear; the fourth motor is mounted on the frame, and a first bevel gear is mounted on the output end of the fourth motor; the crossbar is horizontally mounted inside the frame, and a second bevel gear is mounted on the crossbar, the second bevel gear meshing with the first bevel gear; the side plate is mounted on both sides of the frame; the adjusting plate is slidably mounted on the side plate, and the top of the adjusting plate is connected to the gantry frame; both ends of the crossbar extend outward through one side of the adjusting plate, the fourth gear is mounted on the extended end of the crossbar, and a second rack is mounted on one side of the adjusting plate, the second rack meshing with the fourth gear.

[0014] Preferably, the lateral drive component includes a first threaded rod and a second motor; the first threaded rod is disposed inside the gantry frame; the second motor is disposed on one side of the gantry frame, the output end of the second motor is connected to one end of the first threaded rod, the drive block is threaded onto the first threaded rod, a slide bar is disposed inside the gantry frame at the bottom of the first threaded rod, and the drive block has a through hole for the slide bar to move.

[0015] Preferably, a placement plate is provided on the side of the adjustment plate away from the frame.

[0016] The advantages of this invention compared to the prior art are:

[0017] 1. A vertical drive component drives a sliding plate to move vertically along a rectangular column. The movement of the sliding plate is converted into a fine-tuning force on the printing platform via the column. When the sliding plate moves to the appropriate position, the fine-tuning force applied by the column to the printing platform ensures that the printing platform is level. Based on feedback data from the laser level, the calibration component 9 is iteratively adjusted until the printing platform is level, thereby avoiding problems such as interlayer misalignment or surface unevenness during printing.

[0018] 2. By starting the first motor, the output of the first motor drives the second gear to rotate. Since the second gear meshes with the third gear, the third gear also rotates. The rotation of the third gear drives the connecting posts to rotate. Because each of the four connecting posts is equipped with a first sprocket and fitted with a first chain, the four connecting posts can rotate synchronously. The rotation of the connecting posts drives the threaded posts to rotate. Since the threaded posts are threadedly connected to the threaded sleeves, the rotation of the threaded posts drives the threaded sleeves to move up and down. The top of the threaded sleeves is connected to the bottom of the printing platform, so the up and down movement of the threaded sleeves drives the up and down movement of the printing platform, achieving height adjustment. Attached Figure Description

[0019] Figure 1 This is a 3D structural diagram of the printing platform height adjustment mechanism. Figure 1 .

[0020] Figure 2 This is a 3D structural diagram of the printing platform height adjustment mechanism. Figure 2 .

[0021] Figure 3 This is a front view of the printing platform height adjustment mechanism.

[0022] Figure 4 It is a 3D view of the movable plate, mounting bracket and printing platform in the printing platform height adjustment mechanism.

[0023] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0024] Figure 6 This is a cross-sectional view of the adjustment box in the height adjustment mechanism of the printing platform from a frontal view.

[0025] Figure 7 It is a three-dimensional view of the printing platform, threaded sleeve, connecting column and first sprocket in the printing platform height adjustment mechanism.

[0026] Figure 8 This is a 3D view of the frame and gantry in the printing platform height adjustment mechanism.

[0027] Figure 9 This is a 3D view of the frame, side plates, and adjustment plate in the printing platform height adjustment mechanism.

[0028] Figure 10 This is a 3D view of the side plate and adjustment plate in the height adjustment mechanism of the printing platform.

[0029] The diagram is labeled as follows: 1. Frame; 2. Gantry; 21. Fourth motor; 22. First bevel gear; 23. Crossbar; 24. Second bevel gear; 25. Side plate; 26. Fourth gear; 27. Adjusting plate; 28. Second rack; 3. Drive block; 31. First threaded rod; 32. Second motor; 33. Slide rod; 4. Print head; 5. Moving plate; 51. Mounting bracket; 52. Second threaded rod; 53. Moving block; 54. Second sprocket; 55. Third motor; 56. Third sprocket; 57. Second chain; 6. Printing platform; 7. Height 71. Adjustment box; 72. First partition; 73. Second partition; 74. Threaded column; 75. Threaded sleeve; 76. Connecting column; 77. First sprocket; 78. First chain; 79. First motor; 710. Second gear; 711. Third gear; 8. Horizontal plate; 9. Horizontal calibration assembly; 91. Rectangular column; 92. Top plate; 93. Sliding plate; 94. Column; 95. First rack; 96. Connecting frame; 97. Rotating rod; 98. First gear; 99. Turntable; 910. Guide column; 10. Placement plate. Detailed Implementation

[0030] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0031] See Figures 1 to 10As shown, the present invention provides a printing platform height adjustment mechanism, including a frame 1, a gantry 2 at the top of the frame 1, vertical adjustment components for adjusting the height of the gantry 2 on both sides of the frame 1, a drive block 3 movably disposed on the inner side of the gantry 2, a horizontal drive component for driving the drive block 3 to move laterally on the gantry 2, a print head 4 disposed on one side of the drive block 3, a movable plate 5 movably disposed at the top of the frame 1, a threaded drive component for driving the movable plate 5 to move on the frame 1, a printing platform 6 disposed on the movable plate 5, a height adjustment component 7 for adjusting the height of the printing platform 6 disposed between the movable plate 5 and the printing platform 6, horizontal plates 8 on both sides of the movable plate 5, and a horizontal calibration component 9 for calibrating the printing platform 6 at the top of the horizontal plates 8.

[0032] Based on printing requirements, the vertical adjustment component is activated to adjust the height of the gantry 2, ensuring a suitable initial distance between the print head 4 and the printing platform 6. Subsequently, the moving plate 5 is moved at the top of the frame 1 via a threaded drive component, moving the printing platform 6 to the printing start position. When the height of the printing platform 6 needs adjustment, the height adjustment component 7 is activated to adjust the height of the printing platform 6, ensuring the distance between the print head 4 and the printing platform 6 meets printing requirements.

[0033] After the height of the printing platform 6 is adjusted, a laser level is used to perform a preliminary calibration of the printing platform 6. If the detection finds that the printing platform 6 is not level, the level calibration component 9 is activated to perform a comprehensive level detection and calibration of the printing platform 6, ensuring that the printing platform 6 is level, thereby avoiding problems such as interlayer misalignment or uneven surface during the printing process.

[0034] See Figures 4 to 5 As shown, the horizontal calibration component 9 includes a rectangular column 91, a sliding plate 93, and a column 94. The rectangular column 91 is located on the top of the horizontal plate 8. There are four rectangular columns 91, which are located at the four corners of the printing platform 6. The printing platform 6 is provided with a through-hole for the rectangular column 91 to move. A top plate 92 is provided on the top of the rectangular column 91. The sliding plate 93 is slidably disposed on the rectangular column 91. A vertical drive component for driving the sliding plate 93 to move is provided on the top plate 92. The column 94 is located at the bottom of the sliding plate 93, and one end of the column 94 is connected to the top of the printing platform 6.

[0035] After the height of the printing platform 6 is adjusted, the horizontal status of the printing platform 6 is detected using an external level detection device, a laser level. If a horizontal deviation is detected, the vertical drive component is activated based on the direction and magnitude of the deviation. This component drives the sliding plate 93 to move vertically on the rectangular column 91. The movement of the sliding plate 93 is converted into a fine-tuning force on the printing platform 6 via the column 94. When the sliding plate 93 moves to the appropriate position, the fine-tuning force applied by the column 94 to the printing platform 6 ensures that the printing platform 6 is horizontal. The calibration component 9 is iteratively adjusted based on the feedback data from the laser level until the printing platform 6 is horizontal, thereby avoiding problems such as interlayer misalignment or surface unevenness during printing.

[0036] See Figures 4 to 5 As shown, the vertical drive component includes a first rack 95, a connecting frame 96, and a rotating rod 97; the first rack 95 is disposed on the top of the sliding plate 93; the connecting frame 96 is disposed on the top of the top plate 92; the rotating rod 97 is disposed on the inner side of the connecting frame 96, and a first gear 98 is disposed on the rotating rod 97. One end of the rotating rod 97 extends outward through one side of the connecting frame 96, and a turntable 99 is disposed at the extended end of the rotating rod 97. The first gear 98 meshes with the first rack 95.

[0037] By rotating the turntable 99, the rotating rod 97 is driven to rotate. The rotational motion of the rotating rod 97 is converted into the linear motion of the first rack 95 through the meshing relationship between the first gear 98 and the first rack 95. The linear motion of the first rack 95 is directly transmitted to the sliding plate 93. Since the sliding plate 93 is slidably mounted on the rectangular column 91, it will move vertically along the rectangular column 91. By continuously rotating the turntable 99, the user can precisely control the vertical position of the sliding plate 93 on the rectangular column 91, thereby achieving indirect fine-tuning of the printing platform 6 through the column 94, ultimately achieving the purpose of horizontal calibration.

[0038] See Figure 5 As shown, a guide post 910 is provided on one side of the rectangular post 91 at the top of the horizontal plate 8, and one end of the sliding plate 93 is slidably disposed on the guide post 910.

[0039] When the sliding plate 93 moves along the rectangular column 91, the sliding plate 93 will slide along the guide column 910 during movement due to the setting of the guide column 910, thereby improving the stability of the movement of the sliding plate 93.

[0040] See Figure 6 and Figure 7As shown, the height adjustment assembly 7 includes an adjustment box 71, a connecting column 76, a first motor 79, and a third gear 711. The adjustment box 71 is mounted on the movable plate 5. A first partition 72 is provided inside the adjustment box 71, and a second partition 73 is provided at the bottom of the first partition 72. The first partition 72 and the second partition 73 divide the adjustment box 71 into a first cavity, a second cavity, and a third cavity from top to bottom. A threaded column 74 is provided at the top of the first partition 72 in the first cavity. A threaded sleeve 75 is threadedly connected to the threaded column 74. The top of the threaded sleeve 75 is connected to the printing platform 6. The bottom is connected; four connecting posts 76 are provided and are located in the second cavity. One end of the connecting post 76 is connected to the bottom of the threaded post 74. The four sets of connecting posts 76 are provided with first sprockets 77, and the four sets of first sprockets 77 are fitted with first chains 78; one end of the connecting post 76 extends through the second partition 73 into the third cavity, and the third gear 711 is provided at the extended end of the connecting post 76; the first motor 79 is located in the second cavity, and the output end of the first motor 79 extends through the second partition 73 into the third cavity and is provided with a second gear 710. The second gear 710 meshes with the third gear 711.

[0041] When the height of the printing platform 6 needs to be adjusted, the first motor 79 is activated, and its output drives the second gear 710 to rotate. Since the second gear 710 meshes with the third gear 711, the third gear 711 also rotates. The rotation of the third gear 711 drives the connecting posts 76 to rotate. Because each of the four connecting posts 76 is equipped with a first sprocket 77 and fitted with a first chain 78, the four connecting posts 76 can rotate synchronously. The rotation of the connecting posts 76 drives the threaded post 74 to rotate. Since the threaded post 74 is threadedly connected to the threaded sleeve 75, the rotation of the threaded post 74 drives the threaded sleeve 75 to move up and down. The top of the threaded sleeve 75 is connected to the bottom of the printing platform 6, so the up and down movement of the threaded sleeve 75 drives the printing platform 6 to move up and down, thus achieving height adjustment.

[0042] See Figure 4 As shown, the threaded drive component includes a mounting frame 51, a second threaded rod 52, and a third motor 55. The mounting frame 51 is mounted on the frame 1, and the second threaded rod 52 is disposed inside the mounting frame 51. A moving block 53 is threadedly connected to the second threaded rod 52, and the top of the moving block 53 is connected to the bottom of the moving plate 5. One end of the second threaded rod 52 extends outward through one side of the mounting frame 51, and a second sprocket 54 is disposed at the extended end of the second threaded rod 52. The third motor 55 is mounted on the mounting frame 51, and a third sprocket 56 is disposed at the output end of the third motor 55. A second chain 57 is sleeved on the second sprocket 54 and the third sprocket 56.

[0043] By activating the third motor 55, the third sprocket 56 is rotated. The rotation of the third sprocket 56 is transmitted to the second sprocket 54 via the second chain 57, which in turn drives the second threaded rod 52 to rotate. The rotation of the second threaded rod 52 drives the moving block 53 to move. The movement of the moving block 53 directly drives the movement of the moving plate 5, thereby achieving precise position adjustment of the moving plate 5 on the frame 1.

[0044] See Figure 4 As shown, slide rails are provided on both sides of the second threaded rod 52 on the frame 1, and the bottom of the moving plate 5 is slidably mounted on the slide rails.

[0045] When the movement of the moving block 53 causes the moving plate 5 to move, the moving plate 5 will move along the slide rail, thereby improving the stability of the movement of the moving plate 5.

[0046] See Figures 8 to 10 As shown, the vertical adjustment component includes a fourth motor 21, a crossbar 23, a side plate 25, an adjustment plate 27, and a fourth gear 26. The fourth motor 21 is mounted on the frame 1, and a first bevel gear 22 is mounted on the output end of the fourth motor 21. The crossbar 23 is horizontally mounted inside the frame 1, and a second bevel gear 24 is mounted on the crossbar 23, which meshes with the first bevel gear 22. The side plate 25 is mounted on both sides of the frame 1. The adjustment plate 27 is slidably mounted on the side plate 25, and the top of the adjustment plate 27 is connected to the gantry 2. Both ends of the crossbar 23 extend outward through one side of the adjustment plate 27, and the fourth gear 26 is mounted on the extended end of the crossbar 23. A second rack 28 is mounted on one side of the adjustment plate 27 located on the frame 1, and the second rack 28 meshes with the fourth gear 26.

[0047] By activating the fourth motor 21, the output of the fourth motor 21 drives the first bevel gear 22 to rotate. The rotation of the first bevel gear 22 is transmitted to the second bevel gear 24 through meshing, which in turn drives the crossbar 23 to rotate. The rotation of the crossbar 23 drives the fourth gear 26, which is located at both ends of the crossbar 23, to rotate synchronously. The rotation of the fourth gear 26 is transmitted to the second rack 28 through meshing. Since the second rack 28 is fixed on the adjusting plate 27, the linear movement of the second rack 28 will cause the adjusting plate 27 to slide on the side plate 25, thereby adjusting the height of the gantry 2 and ensuring that the initial distance between the print head 4 and the printing platform 6 is appropriate.

[0048] See Figure 3 and Figure 10As shown, the transverse drive component includes a first threaded rod 31 and a second motor 32; the first threaded rod 31 is disposed inside the gantry frame 2; the second motor 32 is disposed on one side of the gantry frame 2, the output end of the second motor 32 is connected to one end of the first threaded rod 31, the drive block 3 is threaded onto the first threaded rod 31, a slide rod 33 is disposed inside the gantry frame 2 at the bottom of the first threaded rod 31, and the drive block 3 has a through hole for the slide rod 33 to move.

[0049] The second motor 32 is activated. The second motor 32 drives the first threaded rod 31 to rotate. The rotation of the first threaded rod 31 causes the drive block 3 to move linearly along the axis of the first threaded rod 31. During the linear movement of the drive block 3, the slide rod 33 passes through the through hole on the drive block 3, providing stable guidance and support for the drive block 3. The position of the print head 4 is adjusted by the movement of the drive block 3.

[0050] See Figures 1 to 3 As shown, a placement plate 10 is provided on the side of the adjustment plate 27 away from the frame 1.

[0051] The placement plate 10 on one side of the adjustment plate 27 facilitates the placement or support of other components by staff.

[0052] According to printing requirements, the vertical adjustment component is activated to adjust the height of the gantry 2, ensuring a suitable initial distance between the print head 4 and the printing platform 6. Subsequently, the moving plate 5 is moved on top of the frame 1 via the threaded drive component, moving the printing platform 6 to the printing start position. When the height of the printing platform 6 needs adjustment, the first motor 79 is activated, and its output drives the second gear 710 to rotate. Since the second gear 710 meshes with the third gear 711, the third gear 711 also rotates. The rotation of the third gear 711 drives the connecting posts 76 to rotate. Because each of the four connecting posts 76 is equipped with a first sprocket 77 and fitted with a first chain 78, the four connecting posts 76 can rotate synchronously. The rotation of the connecting posts 76 drives the threaded post 74 to rotate. Since the threaded post 74 is threadedly connected to the threaded sleeve 75, the rotation of the threaded post 74 drives the threaded sleeve 75 to move up and down. The top of the threaded sleeve 75 is connected to the bottom of the printing platform 6. Therefore, the up-and-down movement of the threaded sleeve 75 will drive the printing platform 6 to move up and down, achieving height adjustment and ensuring that the distance between the print head 4 and the printing platform 6 meets the printing requirements. After the height of the printing platform 6 is adjusted, the horizontal state of the printing platform 6 is detected using an external level detection device, a laser level. If the detection finds that the printing platform 6 has a horizontal deviation, the rotation of the turntable 99 is used to rotate the rotating rod 97 according to the direction and magnitude of the horizontal deviation. The rotational motion of the rotating rod 97 is converted into the linear motion of the first rack 95 through the meshing relationship between the first gear 98 and the first rack 95. The linear motion of the first rack 95 is directly transmitted to the sliding plate 93. Since the sliding plate 93 is slidably set on the rectangular column 91, the sliding plate 93 will move vertically along the rectangular column 91. The movement of the sliding plate 93 is converted into a fine-tuning force on the printing platform 6 through the column 94. When the sliding plate 93 moves to the appropriate position, the fine-tuning force applied by the column 94 to the printing platform 6 makes the printing platform 6 reach a horizontal state. The calibration component 9 is iteratively adjusted based on the feedback data from the laser level until the printing platform 6 is in a horizontal state, thereby avoiding problems such as interlayer misalignment or uneven surface during the printing process.

[0053] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A printing platform height adjustment mechanism, characterized in that, The system includes a frame (1), a gantry (2) on the top of the frame (1), vertical adjustment components for adjusting the height of the gantry (2) on both sides of the frame (1), a drive block (3) movably disposed on the inner side of the gantry (2), a horizontal drive component for driving the drive block (3) to move laterally on the gantry (2), a print head (4) on one side of the drive block (3), a movable plate (5) movably disposed on the top of the frame (1), a threaded drive component for driving the movable plate (5) to move on the frame (1), a printing platform (6) disposed on the movable plate (5), a height adjustment component (7) for adjusting the height of the printing platform (6) disposed between the movable plate (5) and the printing platform (6), a horizontal plate (8) disposed on both sides of the movable plate (5), and a horizontal calibration component (9) for calibrating the printing platform (6) at the top of the horizontal plate (8). The horizontal calibration component (9) includes a rectangular column (91), a sliding plate (93), and a column (94). The rectangular column (91) is set on the top of the horizontal plate (8). There are four rectangular columns (91) and they are located at the four corners of the printing platform (6). The printing platform (6) is provided with a through hole for the rectangular column (91) to move. The top of the rectangular column (91) is provided with a top plate (92). The sliding plate (93) is slidably disposed on the rectangular column (91), and the top plate (92) is provided with a vertical driving component for driving the sliding plate (93) to move; The column (94) is located at the bottom of the sliding plate (93), and one end of the column (94) is connected to the top of the printing platform (6); The height adjustment assembly (7) includes an adjustment box (71), a connecting column (76), a first motor (79), and a third gear (711). The adjustment box (71) is mounted on the movable plate (5). A first partition (72) is provided inside the adjustment box (71). A second partition (73) is provided at the bottom of the first partition (72) inside the adjustment box (71). The first partition (72) and the second partition (73) divide the adjustment box (71) into a first cavity, a second cavity and a third cavity from top to bottom. A threaded post (74) is provided at the top of the first partition (72) inside the first cavity. A threaded sleeve (75) is threadedly connected to the threaded post (74). The top of the threaded sleeve (75) is connected to the bottom of the printing platform (6). The connecting post (76) is provided in four and is located in the second cavity. One end of the connecting post (76) is connected to the bottom of the threaded post (74). The four sets of connecting posts (76) are provided with first sprockets (77), and the four sets of first sprockets (77) are fitted with first chains (78). One end of the connecting post (76) extends through the second partition (73) into the third cavity, and the third gear (711) is disposed at the extended end of the connecting post (76); The first motor (79) is disposed in the second cavity. The output end of the first motor (79) extends through the second partition (73) into the third cavity and is provided with a second gear (710). The second gear (710) meshes with the third gear (711). The vertical adjustment component includes a fourth motor (21), a crossbar (23), a side plate (25), an adjustment plate (27), and a fourth gear (26). The fourth motor (21) is mounted on the frame (1), and the output end of the fourth motor (21) is provided with a first bevel gear (22). The crossbar (23) is horizontally arranged inside the frame (1), and a second bevel gear (24) is provided on the crossbar (23), which meshes with the first bevel gear (22); The side plates (25) are disposed on both sides of the frame (1); The adjusting plate (27) is slidably disposed on the side plate (25), and the top of the adjusting plate (27) is connected to the gantry frame (2); The two ends of the crossbar (23) extend outward through one side of the adjusting plate (27). The fourth gear (26) is located at the extended end of the crossbar (23). The adjusting plate (27) is located on one side of the frame (1) and is provided with a second rack (28). The second rack (28) meshes with the fourth gear (26).

2. The printing platform height adjustment mechanism according to claim 1, characterized in that, The vertical drive component includes a first rack (95), a connecting frame (96), and a rotating rod (97). The first rack (95) is disposed on the top of the sliding plate (93); The connecting frame (96) is disposed on the top of the top plate (92); The rotating rod (97) is located inside the connecting frame (96). A first gear (98) is provided on the rotating rod (97). One end of the rotating rod (97) extends outward through one side of the connecting frame (96). A turntable (99) is provided at the extended end of the rotating rod (97). The first gear (98) meshes with the first rack (95).

3. The printing platform height adjustment mechanism according to claim 1, characterized in that, The top of the horizontal plate (8) is provided with a guide post (910) on one side of the rectangular column (91), and one end of the sliding plate (93) is slidably disposed on the guide post (910).

4. The printing platform height adjustment mechanism according to claim 1, characterized in that, The thread drive component includes a mounting bracket (51), a second threaded rod (52), and a third motor (55). The mounting bracket (51) is mounted on the frame (1). A second threaded rod (52) is provided inside the mounting bracket (51). A moving block (53) is threadedly connected to the second threaded rod (52). The top of the moving block (53) is connected to the bottom of the moving plate (5). One end of the second threaded rod (52) extends outward through one side of the mounting bracket (51), and a second sprocket (54) is provided at the extended end of the second threaded rod (52). The third motor (55) is mounted on the mounting bracket (51), and the output end of the third motor (55) is provided with a third sprocket (56). The second sprocket (54) and the third sprocket (56) are fitted with a second chain (57).

5. The printing platform height adjustment mechanism according to claim 1, characterized in that, The frame (1) is provided with slide rails on both sides of the second threaded rod (52), and the bottom of the moving plate (5) is slidably disposed on the slide rails.

6. The printing platform height adjustment mechanism according to claim 1, characterized in that, The lateral drive component includes a first threaded rod (31) and a second motor (32); The first threaded rod (31) is installed inside the gantry (2); The second motor (32) is located on one side of the gantry (2). The output end of the second motor (32) is connected to one end of the first threaded rod (31). The drive block (3) is threaded onto the first threaded rod (31). A slide rod (33) is located at the bottom of the first threaded rod (31) inside the gantry (2). The drive block (3) has a through hole for the slide rod (33) to move.

7. The printing platform height adjustment mechanism according to claim 1, characterized in that, The adjustment plate (27) is provided with a placement plate (10) on the side away from the frame (1).

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