A self-pressing printer structure

Abstract

The present invention provides a self-flattening printer structure, which relates to a printer structure, including a printing platform and a gantry beam support. A roller mounting part is installed at the bottom of the gantry beam support. The roller mounting part is elastically connected to a flattening roller group for flattening printed objects on the printing platform through an elastic part. A pressure sensor is arranged between the elastic part and the roller mounting part. When the flattening roller group initially presses the printed object before printing to generate a pressing force that causes the elastic part to be extruded and deformed, the top of the elastic part presses the roller mounting part through the pressure sensor. If the pressure sensor senses that the pressing force value is greater than a set value, a controller is triggered to control the printing platform to descend. If the pressure sensor senses that the pressing force value is less than the set value, the controller is triggered to control the printing platform to ascend. The present invention can perform adaptive flattening on printed objects of different thicknesses, and can also better adapt to the installation of different flattening rollers, so that the maintenance of the flattening roller is also more convenient.

Description

Technical Field

[0001] The invention relates to a printer structure, in particular to a self-flattening printer structure. Background Art

[0002] As shown in a patent of a flat printer head (publication number CN215620904U), when printing a printed object, the printing base surface is first driven to move by a first moving component to extend out of the machine body, and then the printed object is manually placed on the printing base surface, and then the printing base surface is retracted into the machine body; then the lifting component is used to drive the printing base surface and the printed object thereon to move upward to make them close to the nozzle assembly, and then the nozzle assembly works to spray ink on the surface of the printed object. During the operation of the nozzle assembly, the second moving component drives it to move along the X-axis and the Y-axis on the horizontal plane, and then prints the entire surface of the printed object. For some special-shaped printed objects with poor flatness, a paper pressing wheel is provided to realize flattening the printed object while printing, so as to improve the flatness of the printed object, thereby ensuring the printing quality, and at the same time protecting the printing nozzle so that the printing nozzle will not scratch the printed object;

[0003] However, since the paper pressing wheel is generally fixed, when printing, there will be obvious indentations for thicker paper or cardboard, and when printing for thinner paper or cardboard, the downward pressure will be insufficient, so the adjustability and adaptability are poor. Summary of the invention

[0004] In order to solve the above technical problems, the purpose of the present invention is to provide a self-flattening printer structure, which can adaptively flatten printed materials of different thicknesses, and can also better and faster adapt to the installation of different flattening rollers, making the maintenance of the flattening rollers more convenient.

[0005] The present invention provides the following technical solutions:

[0006] A self-flattening printer structure comprises a printing platform for carrying printed materials, a gantry beam support slidably mounted on the printing platform along the X direction, a printing nozzle slidably mounted on the gantry beam support, and a printing reciprocating drive member mounted on the gantry beam support for driving the printing nozzle to reciprocate along the Y direction, a roller mounting portion is also mounted at the bottom of the gantry beam support, the roller mounting portion is elastically connected to a flattening roller group for flattening printed materials on the printing platform through an elastic member, and a pressure sensor is also arranged between the elastic member and the roller mounting portion, when the flattening roller group initially presses the printed materials before printing to generate a pressing force that causes the elastic member to be squeezed and deformed, the top end of the elastic member presses the roller mounting portion through the pressure sensor, if the pressure sensor senses that the pressure value is greater than the set value, then a controller is triggered to control the printing platform to descend, if the pressure sensor senses that the pressure value is less than the set value, then a controller is triggered to control the printing platform to descend, When the pressure sensor senses that the pressure value is within the set value range, it indicates that the height of the printed object surface from the print nozzle and the flattening roller group is maintained at a standard height. At this standard height, the flattening roller group presses the printed object to ensure that no obvious indentation is produced, and at the same time, it can ensure that the pressure is sufficient to press the printed object, so that the flattening roller group can always stably flatten the printed object during printing. Therefore, the pressure state of printed objects of different thicknesses can be adjusted before printing to avoid obvious indentation or insufficient pressure when printing the printed object, and the adjustment is more automated. At the same time, since the position of the printing platform is automatically adjusted at an adaptive height, the printing stability of the print nozzle can also be ensured to be better.

[0007] Preferably, the printing platform is mounted on the printing base plate, and is driven by a lifting and adjusting member to realize the lifting and adjustment of the printing platform. The lifting and adjusting member includes a horizontal platform plate, a side vertical plate, a rotating screw and a driving motor. The horizontal platform plate is used to carry the printed object, and two groups of side vertical plates are connected on both sides thereof. The side vertical plates are arranged through the printing base plate, and a horizontal base plate is arranged at the bottom end thereof. Each group of side vertical plates corresponds to at least two groups of rotating screws. The top end of the rotating screw is transfer-mounted on the printing base plate, and the bottom end thereof is screwed and mounted in the horizontal base plate. A circle of outer gear ring is also fixed on the outside thereof. The driving motor is arranged in a one-to-one correspondence with the rotating screw, which is electrically connected to the controller and installed. It is installed on the printing base plate, and its driving end is connected to an external gear for meshing with the external gear ring for transmission. Therefore, before printing, the pressure value fed back by the pressure sensor can be used to control multiple drive motors to start at the same time to adjust the height of the printing platform. During printing, since the supporting force is provided by the thread force of the rotating screw, the drive motor is only used to control the driving force to prevent the rotating screw from rotating. Therefore, it can prevent the drive motor from being oppressed by static gravity, thereby affecting its service life. At the same time, the lifting operation of the printing platform also requires multiple drive motors to start and run at the same time to complete the drive, thereby avoiding accidentally touching a group of drive motors and affecting the stability during printing.

[0008] Preferably, the side vertical plate is slidably mounted on the bottom side of the horizontal platform plate, and a group of horizontally distributed screw rods 1 are mounted thereon. The screw rods 1 are driven to rotate by a screw motor 1, and a group of nut sliders threadedly connected to the outside of the screw rods 1 are also arranged on the horizontal platform plate. Therefore, by starting the screw motor 1, the horizontal platform plate is driven to slide back and forth along the side vertical plate, thereby achieving the effect of moving to receive and transport printed materials.

[0009] Preferably, the flattening roller assembly includes a roller body and a connecting part mounted on the axial ends on both sides of the roller body, the connecting part includes a connecting rod, a conical embedded block and a transition block, a group of conical embedded blocks are fixed to the bottom end of the connecting rod, one side of the transition block is provided with a conical slot hole one that cooperates with the conical embedded block, and the other side is provided with a conical slot hole two that is used to abut against the axial ends on both sides of the roller body. Therefore, when the roller body needs to be quickly assembled, a group of transition blocks is required to achieve a transition connection with the connecting part, and it is also more convenient to disassemble.

[0010] Preferably, the elastic member includes a slide, a spring and a pressure plate, the top end of the connecting rod is provided with a convex ring slidably assembled in the slide, the spring is placed in the slide, the bottom end of the spring is connected to the convex ring, and the top end of the spring is connected to the pressure plate, and the pressure plate is used to press the pressure sensor on the roller mounting part when the roller body presses the printed material, and the elastic compression can also have a flattening and buffering effect when pressing.

[0011] Preferably, the roller mounting portion comprises a mounting plate, a mounting block and a second screw rod, the mounting block is provided with two groups and is slidably mounted on the bottom side of the mounting plate, and is driven by the second screw rod to move toward or away from each other, the second screw rod is mounted on the mounting plate, and is driven to rotate by the second screw motor, and the two groups of slideways are correspondingly mounted on the two groups of mounting blocks. Therefore, when it is necessary to quickly assemble the roller body, it is necessary to start the second screw motor to drive the two groups of mounting blocks to move away from each other, and the connecting rod drives the conical surface engaging block away from the transition block. After the transition block is unsupported, it can be detached from the connecting rod together with the roller body, thereby realizing the rapid disassembly of the roller mounting portion and the roller mounting portion, which is relatively convenient. For different roller bodies, since their shaft ends are inserted into the second conical surface slot, they can better adapt to the docking of the shaft ends of roller bodies with different sizes and diameters.

[0012] Preferably, a circle of annular rolling grooves is provided on the conical surface of the conical embedded block, and a circle of annularly distributed balls is embedded in the rolling grooves. The balls are used to press against the inner wall of the conical groove hole when the roller body is clamped and positioned. Therefore, when the roller body rotates and rolls, rolling friction is formed between its two ends and the conical embedded block to replace the static friction connection form that must be formed originally, thereby further improving the stability of rolling.

[0013] Preferably, a quick-connect extension plate is provided on one side of the mounting plate, and the quick-connect extension plate is used to be overlapped and installed on the gantry beam bracket, and is installed with the gantry beam bracket by screws. At this point, the number of flattening roller groups can be freely increased according to the width and material requirements of the printed matter, and the installation is also more convenient.

[0014] The beneficial effects of the present invention are:

[0015] In the present invention, when the pressing pressure generated by the initial pressing of the flattening roller group against the printed object before printing causes the elastic member to be squeezed and deformed, the top end of the elastic member presses against the roller mounting portion through the pressure sensor. If the pressure sensor senses that the pressing pressure value is greater than the set value, the trigger controller controls the printing platform to descend. If the pressure sensor senses that the pressing pressure value is less than the set value, the trigger controller controls the printing platform to rise. In this way, the pressing state of printed objects of different thicknesses can be adjusted before printing, avoiding obvious indentations or insufficient pressure when printing the printed objects, and the degree of automation of the adjustment is also higher. At the same time, since the position of the printing platform is automatically adjusted under the adaptive height, the printing stability of the print head can also be ensured to be better. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 It is a schematic structural diagram of the assembly of the roller mounting portion, the elastic member and the flattening roller assembly in the present invention;

[0019] Figure 3 It is a schematic diagram of the quick-connect extension plate structure on one side of the mounting plate;

[0020] Figure 4 It is a schematic diagram of the structure of the printing platform installation;

[0021] Figure 5 It is a side view of the platform plate and side stand plate positions;

[0022] Figure 6 is a schematic diagram of the structure in which balls are arranged on the conical surface of the conical surface embedding block in Example 2;

[0023] Figure 7 yes Figure 6 A side view of the balls arranged in the middle;

[0024] Markings in the figure:

[0025] 1. Printing platform; 2. Gantry beam bracket; 3. Printing nozzle; 4. Roller mounting part; 5. Elastic part; 6. Flattening roller group; 7. Pressure sensor; 11. Printing base plate; 12. Horizontal platform plate; 13. Side plate; 14. Rotating screw; 15. Driving motor; 16. Horizontal base plate; 17. Outer gear ring; 18. Nut slider; 19. Screw one; 61. Roller body; 62. Connecting rod; 63. Conical embedded block; 64. Transition block; 65. Conical slot one; 66. Conical slot two; 67. Rolling groove; 68. Ball; 51. Slide; 52. Spring; 53. Press plate; 54. Convex ring; 41. Mounting plate; 42. Mounting block; 43. Screw two; 44. Quick-connect extension plate. DETAILED DESCRIPTION

[0026] Example 1

[0027] like Figure 1-5As shown, a self-flattening printer structure, in this embodiment, includes a printing platform 1 for carrying printed materials, a gantry beam bracket 2 slidably mounted on the printing platform 1 along the X direction, a printing nozzle 3 slidably mounted on the gantry beam bracket 2, and a printing reciprocating drive member mounted on the gantry beam bracket 2 for driving the printing nozzle 3 to reciprocate along the Y direction. A roller mounting portion 4 is also installed at the bottom of the gantry beam bracket 2. The roller mounting portion 4 is elastically connected to a flattening roller group 6 for flattening the printed material on the printing platform 1 through an elastic member 5, and a pressure sensor 7 is also arranged between the elastic member 5 and the roller mounting portion 4. When the flattening roller group 6 initially presses the printed material before printing to generate a pressing force that causes the elastic member 5 to be squeezed and deformed, the top of the elastic member 5 presses the roller mounting portion 4 through the pressure sensor 7. If the pressure sensor 7 senses that the pressing force value is greater than the set value, the controller is triggered to control the printing platform 1 to descend. If the pressure sensor 7 senses that the pressing force value is greater than the set value, the controller is triggered to control the printing platform 1 to descend. When the force value is less than the set value, the controller is triggered to control the printing platform 1 to rise. The set value can be a certain value or a range value manually input into the controller in advance. When the pressure sensor 7 senses that the pressure value is within the set value range, it indicates that the height of the printed surface from the print nozzle 3 and the flattening roller group 6 is maintained at a standard height. At this standard height, the flattening roller group 6 presses the printed material to ensure that no obvious indentation is produced, and at the same time, it can ensure that the pressure is sufficient to press the printed material, and it can ensure that the flattening roller group 6 can always stably flatten the printed material during printing. Therefore, the pressure state of printed materials of different thicknesses can be adjusted before printing to avoid obvious indentations or insufficient pressure when printing the printed material, and the degree of automation of the adjustment is also higher. At the same time, since the position of the printing platform 1 is automatically adjusted under the adaptive height, it can also ensure that the printing stability of the print head 3 is better.

[0028] The printing platform 1 is installed on the printing base plate 11, and is driven by a lifting adjustment member to realize the lifting and adjustment of the printing platform 1. The lifting adjustment member includes a horizontal platform 12, a side plate 13, a rotating screw 14 and a driving motor 15. The horizontal platform 12 is used to carry the printed material, and two groups of side plates 13 are connected on both sides thereof. The side plates 13 pass through the printing base plate 11, and a horizontal base plate 16 is provided at the bottom end thereof. Each group of side plates 13 corresponds to at least two groups of rotating screws 14. The top end of the rotating screw 14 is installed on the printing base plate 11, and the bottom end thereof is screwed in the horizontal base plate 16. A circle of outer gear ring 17 is also fixed on the outside thereof. The driving motor 15 is arranged one by one with the rotating screw 14, which is electrically connected to the controller and installed on the horizontal base plate 16. On the printing base plate 11, its driving end is connected to an external gear for meshing and transmitting with the external gear ring 17. Therefore, before printing, the pressure value fed back by the pressure sensor 7 can be used to control the simultaneous start of multiple drive motors 15 to adjust the height of the printing platform 1. During printing, since the supporting force is provided by the thread force of the rotating screw 14, the drive motor 15 is only used to control the driving force to prevent the rotating screw 14 from rotating. Therefore, it can prevent the drive motor 15 from being subjected to static gravity pressure, thereby affecting the service life. At the same time, the lifting operation of the printing platform 1 also requires multiple drive motors 15 to start and run at the same time to complete the drive, thereby avoiding the accidental triggering of a group of drive motors 15 to affect the stability during printing.

[0029] The side upright plate 13 is slidably mounted on the bottom side of the horizontal platform plate 12, and a group of horizontally distributed screw rods 19 are also mounted thereon. The screw rods 19 are driven to rotate by a screw motor 1. The horizontal platform plate 12 is also provided with a group of nut sliders 18 threadedly connected to the outside of the screw rods 19. Therefore, by starting the screw motor 1, the horizontal platform plate 12 is driven to slide back and forth along the side upright plate 13, so as to achieve the effect of moving to undertake and transport the printed matter.

[0030] The flattening roller assembly 6 includes a roller body 61 and a connecting part assembled on the axial ends on both sides of the roller body 61, the connecting part includes a connecting rod 62, a conical embedded block 63 and a transition block 64, a group of conical embedded blocks 63 are fixed to the bottom end of the connecting rod 62, one side of the transition block 64 is provided with a conical slot 65 that cooperates with the conical embedded block 63, and the other side is provided with a conical slot 66 for abutting against the axial ends on both sides of the roller body 61. Therefore, when the roller body 61 needs to be quickly assembled, a group of transition blocks 64 is needed to achieve a transition connection with the connecting part, and it is also more convenient to disassemble.

[0031] The elastic member 5 includes a slide 51, a spring 52 and a pressure plate 53. The top end of the connecting rod 62 is provided with a convex ring 54 which is slidably assembled in the slide 51. The spring 52 is placed in the slide 51, and its bottom end is connected to the convex ring 54, and its top end is connected to the pressure plate 53. The pressure plate 53 is used to press the pressure sensor 7 on the roller mounting part 4 when the roller body 61 presses the printed material, and the elastic compression can also have a flattening and buffering effect when pressing.

[0032] The roller mounting portion 4 comprises a mounting plate 41, a mounting block 42 and a second screw rod 43. The mounting block 42 is provided with two groups and is slidably mounted on the bottom side of the mounting plate 41. The second screw rod 43 is driven to move toward or away from each other. The second screw rod 43 is mounted on the mounting plate 41 and is driven to rotate by the second screw motor. The two groups of slideways 51 are correspondingly mounted on the two groups of mounting blocks 42. Therefore, when it is necessary to quickly assemble the roller body 61, it is necessary to start the second screw motor to drive the two groups of mounting blocks 42 to move away from each other. The connecting rod 62 drives the conical surface engaging block away from the transition block 64. After the transition block 64 is unsupported, it can be separated from the connecting rod 62 together with the roller body 61, so that the roller mounting portion 4 and the roller mounting portion 4 can be quickly disassembled, which is more convenient. For different roller bodies 61, since their shaft ends are placed in the second conical surface slot hole 66, they can better adapt to the docking of the shaft ends of roller bodies 61 with different sizes and diameters.

[0033] A quick-connect extension plate 44 is provided on one side of the mounting plate 41. The quick-connect extension plate 44 is used for overlapping and mounting on the gantry beam bracket 2, and is mounted to the gantry beam bracket 2 by screws. At this point, the number of flattening roller groups 6 can be freely increased according to the width and material requirements of the printed matter, and the installation is also relatively convenient.

[0034] Example 2

[0035] like Figure 6-7 As shown, a self-flattening printer structure, in this embodiment, is further limited based on embodiment 1, a circle of annular rolling grooves 67 are provided on the conical surface of the conical embedded block 63, and a circle of annularly distributed balls 68 are embedded in the rolling grooves 67. The balls 68 are used to press against the inner wall of the conical groove hole 65 when clamping and positioning the roller body 61. Therefore, when the roller body 61 rotates and rolls, rolling friction is formed between its two ends and the conical embedded block 63 to replace the static friction connection form that must be formed originally, thereby further improving the stability of rolling.

[0036] The working principle of the present invention is:

[0037] A standard height value can be manually input and set in the controller in advance. When the pressure sensor 7 senses that the pressure value is within the set value range, it indicates that the height of the printed object surface from the print nozzle 3 and the flattening roller group 6 is maintained at a standard height. At this standard height, the flattening roller group 6 presses the printed object to ensure that no obvious indentation is generated, and at the same time, it can also ensure that the pressure is sufficient to press the printed object, which can ensure that the flattening roller group 6 can always stably flatten the printed object during printing. When the pressure generated by the flattening roller group 6 initially pressing the printed object before printing causes the elastic member 5 to be squeezed and deformed, the elastic member 5 The top of the roller mounting portion 4 is pressed against the pressure sensor 7 through the pressure sensor 7. If the pressure sensor 7 senses that the pressure value is greater than the set value, the controller is triggered to control the printing platform 1 to descend. If the pressure sensor 7 senses that the pressure value is less than the set value, the controller is triggered to control the printing platform 1 to rise. In this way, the pressure state of printed objects of different thicknesses can be adjusted before printing to avoid obvious indentations or insufficient pressure when printing the printed objects, and the degree of automation of the adjustment is also higher. At the same time, since the position of the printing platform 1 is automatically adjusted under the adaptive height, the printing stability of the print head 3 can also be ensured to be better.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-flattening printer structure, comprising a printing platform (1) for carrying a printed object, a gantry beam support (2) slidably mounted on the printing platform (1) along the X direction, a printing nozzle (3) slidably mounted on the gantry beam support (2), and a printing reciprocating drive member mounted on the gantry beam support (2) for driving the printing nozzle (3) to reciprocate along the Y direction, characterized in that: A roller mounting portion (4) is also installed at the bottom of the gantry crossbeam support (2). The roller mounting portion (4) is elastically connected to a flattening roller group (6) for flattening the printed material on the printing platform (1) through an elastic member (5). A pressure sensor (7) is also arranged between the elastic member (5) and the roller mounting portion (4). When the flattening roller group (6) initially presses the printed material before printing to generate a pressing force that causes the elastic member (5) to be squeezed and deformed, the top of the elastic member (5) presses the roller mounting portion (4) through the pressure sensor (7). If the pressure sensor (7) senses that the pressure value is greater than a set value, the controller is triggered to control the printing platform (1) to descend. If the pressure sensor (7) senses that the pressure value is less than the set value, the controller is triggered to control the printing platform (1) to ascend. The flattening roller assembly (6) comprises a roller body (61) and a connecting portion mounted on the shaft ends on both sides of the roller body (61), the connecting portion comprising a connecting rod (62), a conical surface embedded block (63) and a transition block (64), a group of conical surface embedded blocks (63) being fixed at the bottom end of the connecting rod (62), a conical surface slot hole (65) cooperating with the conical surface embedded block (63) being provided on one side of the transition block (64), and a conical surface slot hole (66) for abutting against the shaft ends on both sides of the roller body (61) being provided on the other side thereof; The elastic member (5) comprises a slideway (51), a spring (52) and a pressure plate (53); the top end of the connecting rod (62) is provided with a convex ring (54) slidably mounted in the slideway (51); the spring (52) is placed in the slideway (51), the bottom end of the spring (52) is connected to the convex ring (54), and the top end of the spring (52) is connected to the pressure plate (53); and the pressure plate (53) is used to press the pressure sensor (7) on the roller mounting portion (4) when the roller body (61) presses against the printed matter; The roller mounting portion (4) comprises a mounting plate (41), a mounting block (42) and a second screw rod (43); the mounting block (42) is provided with two groups and is slidably mounted on the bottom side of the mounting plate (41) and is driven by the second screw rod (43) to move toward or away from each other; the second screw rod (43) is mounted on the mounting plate (41) and is driven to rotate by a second screw motor; and the two groups of slideways (51) are correspondingly mounted on the two groups of mounting blocks (42); A quick-connect extension plate (44) is provided on one side of the installation plate (41), and the quick-connect extension plate (44) is used for overlapping and installing on the gantry beam bracket (2), and is installed with the gantry beam bracket (2) by means of screws; The printing platform (1) is installed on a printing base plate (11) and is driven by a lifting adjustment member to realize the lifting and adjustment of the printing platform (1). The lifting adjustment member comprises a horizontal platform plate (12), a side plate (13), a rotating screw (14) and a driving motor (15). The horizontal platform plate (12) is used to carry printed objects, and two groups of side plates (13) are connected on both sides of the horizontal platform plate (12). The side plates (13) pass through the printing base plate (11) and have a horizontal base plate (16) at their bottom ends. Each group of side plates At least two sets of rotating screws (14) are arranged on the plate (13), the top ends of the rotating screws (14) are installed on the printing base plate (11), and the bottom ends are installed in the horizontal base plate (16) by screw connection, and a circle of outer gear ring (17) is fixed on the outer side of the rotating screws (14). The driving motor (15) is arranged one by one corresponding to the rotating screws (14), is electrically connected to the controller, and is installed on the printing base plate (11), and the driving end thereof is connected to an external gear for meshing with the outer gear ring (17) for transmission; The side stand (13) is slidably mounted on the bottom side of the horizontal platform (12), and a group of horizontally distributed screw rods (19) are also mounted thereon. The screw rods (19) are driven to rotate by a screw motor. The horizontal platform (12) is also provided with a group of nut sliders (18) threadedly connected to the outside of the screw rods (19).

2. A self-pressing printer structure according to claim 1, characterized in that: A circle of annular rolling grooves (67) are arranged on the conical surface of the conical embedded block (63), and a circle of annularly distributed balls (68) are embedded in the rolling grooves (67). The balls (68) are used to press against the inner wall of the conical groove hole (65) when the roller body (61) is clamped and positioned. Therefore, when the roller body (61) rotates and rolls, rolling friction is formed between its two ends and the conical embedded block (63).

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