Printer with scanning straight-out nozzle bottom plate rotating mechanism

Abstract

The printer comprises a conveying belt, a one-dimensional motion platform is arranged above the conveying belt in a crossing mode, the printer further comprises a printing assembly arranged above the conveying belt, the printing assembly comprises a frame and a trolley lifting assembly, and the trolley lifting assembly is fixedly connected with a motion part in the one-dimensional motion platform; pneumatic clamping hands and positioning cylinders are respectively arranged at four corners of the bottom frame of the frame; a motor is fixedly mounted on the frame, a vertical rotating shaft is arranged in the frame, and the motor is connected with the rotating shaft; a lifting cylinder is arranged in the frame; the cylinder body end of the lifting cylinder is fixed on the rotating shaft; the printing assembly further comprises a printing head bottom plate, the piston rod end of the lifting air cylinder is fixedly connected to the printing head bottom plate, a plurality of printing nozzles are installed in the printing head bottom plate, and bottom plate adjusting strips are arranged at the positions, close to the peripheral edges, of the top face of the printing head bottom plate correspondingly. The 3D printer has the advantages of low cost of scanning type printing and high efficiency of straight-out type printing.

Description

Technical Field

[0001] The present invention relates to the field of printers, and more particularly to a printer with a rotating mechanism for the nozzle plate for scanning and direct output. Background Art

[0002] Existing printers include scanning printers and direct output printers. In a scanning printer, the carriage loaded with nozzles moves left and right reciprocally for printing. With only a few nozzles, patterns can be printed on the material, and the cost can be reduced due to the small number of nozzles. However, the disadvantage is that the printing efficiency is not high enough. In a direct output printer, the carriage loaded with nozzles is fixed, and the pattern is entirely sprayed on the surface of the material at one time, enabling a large number of printing tasks to be completed in a short time. However, due to the use of multiple nozzles, there is a problem of high cost. Summary of the Invention

[0003] The present invention provides a printer with a rotating mechanism for the nozzle plate for scanning and direct output, which can achieve scanning printing and direct output printing to solve the problem of the single working mode of existing printers.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows: A printer with a rotating mechanism for the nozzle plate for scanning and direct output includes a conveyor belt (1). Above the conveyor belt (1), a one-dimensional motion platform (2) is horizontally arranged across. The moving part in the one-dimensional motion platform (2) can perform a horizontal linear motion above the conveyor belt (1), and the moving direction of the moving part in the one-dimensional motion platform (2) is not parallel to the conveying direction of the conveyor belt (1); It further includes a printing assembly (3) arranged above the conveyor belt (1). The printing assembly (3) includes a frame (3.1). The frame (3.1) is fixedly connected to the moving part in the one-dimensional motion platform (2). Pneumatic grippers (3.2) and positioning cylinders (3.3) are respectively installed at the four corners of the bottom frame of the frame (3.1); A top plate (3.4) is fixed on the top frame of the frame (3.1). A motor (3.5) is fixedly installed on the top plate (3.4). Inside the frame (3.1) below the top plate (3.4), a vertical rotating shaft (3.6) is provided. The output shaft of the motor (3.5) is connected to the upper end of the rotating shaft (3.6); A lifting cylinder (3.7) is provided inside the frame (3.1). The piston rod end of the lifting cylinder (3.7) is vertically downward, and the cylinder body end of the lifting cylinder (3.7) is fixed to the lower end of the rotating shaft (3.6); The printing assembly (3) further includes a horizontally arranged printing head base plate (3.8). The piston rod end of the lifting air cylinder (3.7) is fixedly connected to the middle position of the top surface of the printing head base plate (3.8). The length and width of the printing head base plate (3.8) are both smaller than the length and width of the bottom frame in the frame (3.1). A plurality of printing nozzles (3.9) are installed in the printing head base plate (3.8), and the ink outlet ends of each printing nozzle (3.9) extend downward from the printing head base plate (3.8). At positions near the four peripheral edges of the top surface of the printing head base plate (3.8), there are respectively provided base plate adjustment strips (3.10). Each base plate adjustment strip (3.10) is parallel to the corresponding edge of the printing head base plate (3.8), and there is a gap between the adjacent ends of the adjacent base plate adjustment strips (3.10).

[0005] Further, the one-dimensional motion platform is a magnetic levitation slider mechanism driven by a linear motor, and the slider in the magnetic levitation slider mechanism serves as the moving part.

[0006] Further, the printing assembly (3) further includes a trolley lifting assembly. The trolley lifting assembly is a lead screw slider mechanism driven by a motor. The lead screw in the lead screw slider mechanism is vertically and slidably installed on the moving part of the one-dimensional motion platform. The slider in the lead screw slider mechanism serves as the moving part and is fixedly connected to the frame (3.1). Thus, the moving part of the one-dimensional motion platform is fixedly connected to the frame (3.1) through the trolley lifting assembly, and the frame (3.1) is driven to move up and down by the trolley lifting assembly.

[0007] Further, humidity-preserving ink scraping devices (4) are respectively arranged on the two symmetrical sides of the conveyor belt (1), and the two ends of the one-dimensional motion platform (2) respectively extend above the two humidity-preserving ink scraping devices (4) in a one-to-one correspondence.

[0008] When the present invention operates in the direct output printing mode, the printing assembly remains stationary above the conveyor belt, and the material is conveyed to the lower part of the printing assembly through the conveyor belt, and printing is performed by the printing assembly.

[0009] When the present invention operates in the scanning printing mode, the printing assembly is driven by the one-dimensional motion platform to perform one-dimensional linear motion, and during the motion, the printing assembly performs printing on the material conveyed by the conveyor belt.

[0010] In the present invention, a scanning direct output nozzle base plate rotation mechanism is formed by a motor, a rotating shaft, a lifting air cylinder, and a printing head base plate, and the two printing modes of direct output printing and scanning printing are switched by rotating the printing head base plate. If the current printing mode is the direct output printing mode, the printing head base plate can be rotated clockwise by 90 degrees according to the instruction to become the scanning printing mode; if the current printing mode is the scanning printing mode, the printing head base plate can be rotated counterclockwise by 90 degrees according to the instruction to become the direct output printing mode.

[0011] Compared with the prior art, the present invention can use a limited number of printing nozzles to achieve two printing modes: direct printing and scanning printing. Therefore, it combines the advantages of low cost of scanning printing and high efficiency of direct printing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention.

[0013] Figure 2 is a structural diagram of a printing component of an embodiment of the present invention.

[0014] Figure 3 is a connection structural diagram of a motor, a rotating shaft, and a printing head bottom plate in an embodiment of the present invention.

[0015] Figure 4 is a structural diagram of a pneumatic gripper in an embodiment of the present invention.

[0016] Figure 5 is a structural diagram of a positioning cylinder in an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present invention will be further described below with reference to the drawings and embodiments.

[0018] As Figure 1 shown, this embodiment discloses a printer with a rotating mechanism for a scanning and direct-out nozzle bottom plate, including a base 5. A conveyor belt 1 is installed on the base 5, and the transmission direction of the conveyor belt 1 is from back to front. A feeding device 6 is provided at the rear side of the base 5 corresponding to the rear end position of the conveyor belt 1. The feeding device conveys the material to be printed onto the conveyor belt 1, and the conveyor belt 1 transports the material from back to front.

[0019] Support seats are respectively and fixedly arranged on the left and right outer sides of the base 5. A one-dimensional motion platform 2 is commonly supported and installed on the two support seats, and the one-dimensional motion platform straddles above the conveyor belt 1 in the left and right horizontal directions. Specifically, the one-dimensional motion platform 2 is a magnetic levitation slider mechanism driven by a linear motor. The magnetic levitation slider mechanism includes a motion support seat, a stator, a mover, a guide rail, and a slider. The motion support seat is fixed on the support seats on the left and right sides of the base 5. The stator is fixed on the motion support seat in the left and right directions. The guide rail is fixed on the motion support seat and extends in the left and right horizontal directions. The slider, as the moving part of the one-dimensional motion platform 2, is slidably installed on the guide rail. The linear motor utilizes the principle of electromagnetic action. After being energized, under the action of thrust, it drives the slider, which is the moving part of the one-dimensional motion platform 2, to perform linear motion in the left and right directions. By controlling the magnitude and direction of the current, the speed and motion direction of the moving part in the one-dimensional motion platform 2 can be adjusted.

[0020] Moisture-proof ink scraping devices 4 are respectively provided on the left and right sides of the base 5. In the one-dimensional motion platform 2, the motion support base, the guide rail, and both ends of the stator extend above the working areas of the moisture-proof ink scraping devices in the corresponding directions. One of the moisture-proof ink scraping devices serves as the moisture-proof ink scraping device for the scanning mode, and the other moisture-proof ink scraping device serves as the moisture-proof ink scraping device for the direct output mode.

[0021] Above the conveyor belt 1, a printing assembly 3 is provided. As Figure 2 shown, the printing assembly 3 includes a rectangular frame 3.1, a print head base plate 3.8, and a trolley lifting assembly 3.14. The trolley lifting assembly 3.14 is fixedly connected to the slider serving as the moving part in the one-dimensional motion platform 2. The frame 3.1 is connected to the moving part in the trolley lifting assembly 3.14. Pneumatic grippers 3.2 and positioning cylinders 3.3 are respectively installed at the four corner positions inside the bottom frame of the frame 3.1.

[0022] As Figure 4 shown, the pneumatic gripper 3.2 in this embodiment includes a body and pneumatic fingers 3.21 rotatably connected to two symmetric corner positions at one end of the body. There is a cylinder inside the body to drive the two pneumatic fingers 3.21 to rotate. Clamping blocks 3.22 are respectively arranged on the opposite sides of the two pneumatic fingers 3.21, and each pneumatic finger 3.21 can rotate 90 degrees. The body of the pneumatic gripper 3.2 is fixed at the corresponding corner position inside the bottom frame of the frame 3.1.

[0023] As Figure 5 shown, the positioning cylinder 3.3 in this embodiment includes a cylinder body 3.31 and a piston rod 3.32. The cylinder body 3.31 is fixed at the corresponding corner position inside the bottom frame of the frame 3.1.

[0024] As Figure 3 shown, a top plate 3.4 is fixed on the top frame of the frame 3.1 in the printing assembly 3. A motor 3.5, a reducer 3.11, a coupling 3.12, and a secondary ink cartridge 3.13 are fixedly installed on the top plate 3.4. A vertical rotating shaft 3.6 is arranged inside the frame 3.1 below the top plate 3.4. The output shaft of the motor 3.5 is coaxially and fixedly connected to the upper end of the rotating shaft 3.6 through the reducer 3.11 and the coupling 3.12. A lifting cylinder 3.7 is arranged inside the frame 3.1. The piston rod end of the lifting cylinder 3.7 is vertically downward, and the cylinder body end of the lifting cylinder 3.7 is fixed to the lower end of the rotating shaft 3.6.

[0025] The print head base plate 3.8 is horizontally arranged below the bottom frame of the frame 3.1. The piston rod end of the lifting cylinder 3.7 is fixedly connected to the middle position of the top surface of the print head base plate 3.8. The length and width of the print head base plate 3.8 are both smaller than the length and width of the bottom frame in the frame 3.1. The lifting cylinder 3.7 drives the print head base plate 3.8 to move up and down, and the print head base plate 3.8 can rise to enter the bottom frame of the frame 3.1.

[0026] A plurality of print nozzles 3.9 are installed in the print head bottom plate 3.8, and the ink outlet ends of each print nozzle 3.9 extend downward from the print head bottom plate 3.8. The secondary ink cartridges 3.13 are respectively connected to the ink inlet ends of each print nozzle 3.9 through pipelines. Bottom plate adjustment strips 3.10 are respectively arranged at positions near the four peripheral edges on the top surface of the print head bottom plate 3.8. Each bottom plate adjustment strip 3.10 is parallel to the corresponding edge of the print head bottom plate 3.8, and there is a gap between the adjacent ends of adjacent bottom plate adjustment strips 3.10. For the scanning direct-out nozzle bottom plate rotation mechanism composed of the motor 3.5, the lifting cylinder 3.7, the rotating shaft 3.6, and the print head bottom plate 3.8, when the motor 3.5 drives the rotating shaft 3.6 to rotate, the lifting cylinder 3.7 and the print head bottom plate 3.8 in the scanning direct-out nozzle bottom plate rotation mechanism rotate as a whole. The print head bottom plate 3.8 can be driven to perform lifting motion through the lifting cylinder 3.7.

[0027] When it is necessary to switch the printing mode, according to the instruction, the piston rod 3.32 of the positioning cylinder 3.3 retracts from the positioning hole in the bottom plate adjustment strip 3.10, releasing the positioning of the frame 3.1 and the bottom plate adjustment strip 3.10. The two pneumatic fingers 3.21 of the pneumatic gripper 3.2 rotate 90 degrees outward respectively, and the clamping block 3.22 releases the frame 3.1 and the bottom plate adjustment strip 3.10 that were originally clamped together; then the piston rod of the lifting cylinder 3.7 extends, and the print head bottom plate 3.8 disengages from the frame 3.1. According to the current printing mode, the print head bottom plate 3.8 is driven by the motor 3.5 to rotate 90 degrees clockwise or counterclockwise according to the instruction. After reaching the specified angle, the piston rod of the lifting cylinder 3.7 retracts, and the print head bottom plate 3.8 rises to the lower side of the frame 3.1. After the system detects that the piston rod of the lifting cylinder 3.7 is reset, the piston rod 3.32 of the positioning cylinder 3.3 is extended again, inserted into the positioning hole in the bottom plate adjustment strip 3.10, repositioning the frame 3.1 and the bottom plate adjustment strip 3.10. At the same time, the two pneumatic fingers 3.21 of the pneumatic gripper 3.2 rotate 90 degrees inward respectively, and the clamping block 3.22 reclamps the frame 3.1 and the bottom plate adjustment strip 3.10, thereby realizing the repositioning and clamping of the print head bottom plate 3.8 and the frame 3.1 after rotation.

[0028] In this embodiment, the trolley lifting assembly 3.14 is a lead screw slider mechanism driven by a motor. The lead screw in the lead screw slider mechanism is vertically rotatably installed on the slider serving as the moving part in the one-dimensional motion platform 2, the guide rail in the lead screw slider mechanism is vertically rotatably installed on the slider serving as the moving part in the one-dimensional motion platform 2, and the slider in the lead screw slider mechanism serves as the moving part and is fixedly connected to the frame 3.1. The frame 3.1 is driven to move up and down through the trolley lifting assembly 3.14 to print materials with different thicknesses.

[0029] When the scanning printing mode is implemented in this embodiment, the printing assembly 3 moves back and forth left and right under the drive of the one-dimensional motion platform 2. When the printing assembly 3 changes direction, the feeding device 6 and the conveyor belt 1 cooperate to feed materials. After the materials reach the designated position on the conveyor belt 1, the trolley assembly 7 moves to the materials for printing.

[0030] When the direct-out printing mode is implemented in this embodiment, the printing assembly 3 moves under the drive of the one-dimensional motion platform 2 to a position above a certain position on the conveyor belt 1 and remains fixed. The feeding device 6 and the conveyor belt 1 cooperate to convey materials below the printing assembly 3 for continuous printing.

[0031] When the machine is under maintenance or not working, according to the current printing mode, the one-dimensional motion platform 2 docks the printing assembly 3 on the working area at the position of the moisture-preserving ink scraping device for the scanning mode or the moisture-preserving ink scraping device for the direct-out mode. There are ink stacks and scraping blades respectively above the corresponding moisture-preserving ink scraping devices, and lifting cylinders are respectively arranged below. When the machine does not work for a long time, the moisture-preserving ink scraping device rises to the highest position driven by the piston rod of the cylinder. Cleaning liquid is respectively injected into each ink stack of the moisture-preserving ink scraping device, which can moisturize the printing nozzles 3.9 installed on the printing head bottom plate 3.8, preventing the nozzle holes of the printing nozzles 3.9 from being blocked due to long-term non-use and affecting the printing quality. When the machine is working, the moisture-preserving ink scraping device descends to the lowest position driven by the piston rod of the cylinder. When there is a blockage in the nozzle holes of the printing nozzles 3.9 during machine operation and maintenance is required, the moisture-preserving ink scraping device rises to the highest position driven by the piston rod of the cylinder. The printing assembly 3 returns above the moisture-preserving ink scraping device to perform ink pressing treatment according to the instruction, so that all nozzle holes are opened. For the residual ink on its surface, the printing assembly 3 can move back and forth left and right, and the residual ink is scraped off by the scraping blade on the moisture-preserving ink scraping device. After the ink scraping is completed, the moisture-preserving ink scraping device descends to the lowest position driven by the piston rod of the cylinder.

[0032] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. The embodiments described in the present invention are only descriptions of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention. Among the various specific technical features described in the above specific embodiments, they can be combined in any suitable way without contradiction. As long as such a combination does not violate the idea of the present invention, it should also be regarded as the content disclosed in the present disclosure. To avoid unnecessary repetition, the present invention does not separately describe various possible combination methods.

[0033] The present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention and without departing from the design idea of the present invention, various variations and improvements made by those skilled in the art to the technical solutions of the present invention should all fall within the protection scope of the present invention. The technical content claimed by the present invention has been fully recorded in the claims.

Claims

1. A printer with a scanning direct-outlet nozzle bottom plate rotation mechanism, characterized in that: It comprises a conveyor belt (1), a one-dimensional motion platform (2) being arranged across the conveyor belt (1), a moving part in the one-dimensional motion platform (2) being capable of performing horizontal linear motion above the conveyor belt (1), and a motion direction of the moving part in the one-dimensional motion platform (2) being non-parallel to a conveying direction of the conveyor belt (1); It also includes a printing assembly (3) disposed above the conveyor belt (1), the printing assembly (3) including a frame (3.1), the frame (3.1) being fixedly connected to a moving part in the one-dimensional motion platform (2), and a pneumatic gripper (3.2) and a positioning cylinder (3.3) being respectively installed at the four corners of the bottom frame of the frame (3.1); A top plate (3.4) is fixed on the top frame of the frame (3.1), a motor (3.5) is fixedly mounted on the top plate (3.4), a vertical rotating shaft (3.6) is provided in the frame (3.1) below the top plate (3.4), and an output shaft of the motor (3.5) is connected to the upper end of the rotating shaft (3.6); A lifting cylinder (3.7) is provided in the frame (3.1), the piston rod end of the lifting cylinder (3.7) is vertically downward, and the cylinder body end of the lifting cylinder (3.7) is fixed to the lower end of the rotating shaft (3.6); The printing assembly (3) also includes a horizontally arranged print head base plate (3.8), the piston rod end of the lifting cylinder (3.7) is fixedly connected to the middle position of the top surface of the print head base plate (3.8), and the length and width of the print head base plate (3.8) are both smaller than the length and width of the bottom frame in the frame (3.1); a plurality of print nozzles (3.9) are installed in the print head base plate (3.8), and the ink outlet end of each print nozzle (3.9) extends to the bottom of the print head base plate (3.8); base plate adjustment strips (3.10) are respectively provided near the four peripheral edges of the top surface of the print head base plate (3.8), each base plate adjustment strip (3.10) is parallel to the corresponding edge of the print head base plate (3.8), and there is a gap between the adjacent ends of adjacent base plate adjustment strips (3.10).

2. A printer with a scanning direct-outlet nozzle bottom plate rotation mechanism according to claim 1, characterized in that: The one-dimensional motion platform is a magnetic suspension slider mechanism driven by a linear motor, and a slider in the magnetic suspension slider mechanism serves as a moving part.

3. A printer with a scanning direct-outlet nozzle bottom plate rotation mechanism according to claim 1 or 2, characterized in that: The printing assembly (3) further comprises a trolley lifting assembly, which is a lead screw slider mechanism driven by a motor, wherein the lead screw in the lead screw slider mechanism is vertically slidably mounted on the moving part of the one-dimensional motion platform, and the slider in the lead screw slider mechanism is fixedly connected to the frame (3.1) as the moving part, thereby the moving part of the one-dimensional motion platform is fixedly connected to the frame (3.1) through the trolley lifting assembly, and the frame (3.1) is driven by the trolley lifting assembly to move up and down.

4. A printer with a scanning direct-outlet nozzle bottom plate rotation mechanism according to claim 1, characterized in that: Moisturizing ink scraping devices (4) are respectively provided on two symmetrical sides of the conveyor belt (1), and two ends of the one-dimensional motion platform (2) extend one-to-one to above the two moisturizing ink scraping devices (4).

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