A high-precision micro-angle rotating platform for an inkjet device

Abstract

The utility model relates to printing inkjet equipment technical field, and disclose a kind of for inkjet equipment high-precision micro-angle rotating platform, including rotating drive component, the rotating drive component drive source is circular arc linear motor, cross bearing is as rotating connection and support, grating ruler is as rotating angle feedback, limit sensor is as the positive and negative limit of rotating movement axis, hard limit stop block prevents the position restriction after drive out of control;The working platform is mainly followed rotating and placing PCB board with rotating drive component, the utility model is rotated by circular arc linear motor as drive, grating ruler is as position feedback, closed-loop control, rotating precision is high, cross rolling bearing, carrying capacity is big, torsional moment capacity is big, solve PCB board circuit line inkjet printing and text inkjet printing process in line step technical problem.

Description

Technical Field

[0001] This utility model relates to the field of printing inkjet equipment technology, specifically a high-precision micro-angle rotating platform for inkjet equipment. Background Technology

[0002] Existing inkjet printing equipment commonly suffers from stepped or jagged edges during straight-line printing. Excessive stepped or jagged edges prevent text printing from meeting customer requirements. This is especially true for circuit printing processes, where even slight stepped or jagged edges can directly affect the conductivity of PCB circuits.

[0003] The formation of steps or jagged edges in straight-line inkjet printing: During the PCB manufacturing process, it is impossible to control whether the horizontal and vertical straight lines are parallel and perpendicular to the PCB edge. In the inkjet printing process, the board edge is generally used for positioning. When the board edge and the lines in the inkjet pattern are not parallel or perpendicular, steps or jagged edges will appear in the straight-line inkjet printing. In the circuit inkjet printing process, steps and jagged edges are not allowed on the straight-line edges. Utility Model Content

[0004] The purpose of this invention is to provide a high-precision micro-angle rotating platform for inkjet equipment, solving the following technical problem: Existing inkjet printing equipment commonly suffers from stepped or jagged edges during straight-line printing. Excessive stepped or jagged edges on the lines fail to meet customer requirements for text printing. Especially in circuit printing processes, even slight stepped or jagged edges can directly affect the conductivity of PCB circuits.

[0005] The objective of this utility model can be achieved through the following technical solutions: A high-precision micro-angle rotating platform for inkjet equipment includes a rotating drive assembly, a working platform is provided at the upper end of the rotating drive assembly, and a PCB board is provided at the upper end of the working platform. The rotary drive assembly includes a base plate on which a cross-shaped ball bearing is fixedly mounted. An upper turntable is fixedly mounted on the inner ring of the cross-shaped ball bearing. An arc linear motor stator is fixedly mounted on the upper end of the base plate, and an arc linear motor mover is fixedly mounted on the upper end of the upper turntable.

[0006] As a further embodiment of this utility model: a fixed base is fixedly installed on the upper turntable, and a grating reading head is fixedly installed on the fixed base. A grating ruler is pasted on the raised arc step of the base plate, and the actual position is fed back through the grating ruler and the grating reading head.

[0007] As a further embodiment of this utility model, a limit sensor is fixedly installed on the base plate.

[0008] As a further embodiment of this utility model: a limit block is fixedly provided on the upper turntable, and a hard limit fixing seat is fixedly provided on the base plate.

[0009] As a further embodiment of this utility model, a polyurethane buffer pad is connected to one side of the rigid limiting fixing seat.

[0010] As a further embodiment of this utility model: the moving part and the stator of the arc linear motor drive the cross-shaped ball bearing to rotate.

[0011] As a further aspect of this invention, the rotational stroke is mainly determined by the limit sensor to achieve the required maximum rotational variation of ±2°.

[0012] As a further embodiment of this utility model: the upper end of the upper turntable is symmetrically provided with vertical plates that are connected to the bottom of the work platform.

[0013] The beneficial effects of this utility model are: (1) This utility model uses a circular arc linear motor as the rotation drive source, and forms a closed-loop control with a position feedback structure composed of a grating ruler and a grating reading head. It can provide real-time feedback on the actual position of the upper turntable, accurately control the rotation angle, and effectively ensure the high precision requirements of inkjet equipment for PCB board angle adjustment. (2) The present invention connects the base plate and the upper turntable by a cross ball bearing. The bearing has unique structural characteristics. While bearing a large load, it can also effectively resist lateral torque, ensuring that the platform can still operate stably under load conditions, thus improving the overall load-bearing capacity and operational stability of the equipment.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded structural diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the rotary drive assembly of this utility model; Figure 4 This is a structural schematic diagram of the rotation angle of this utility model.

[0017] In the diagram: 1. Rotary drive assembly; 1-1. Base plate; 1-2. Cross-shaped ball bearing; 1-3. Upper turntable; 1-4. Vertical plate; 1-5. Grating ruler; 1-6. Grating reader; 1-7. Fixing base; 1-8. Hard limit fixing base; 1-9. Polyurethane buffer pad; 1-10. Limit block; 1-11. Limit sensor; 1-12. Fixing plate; 1-13. Motor protective cover; 1-14. Arc linear motor stator; 1-15. Arc linear motor mover; 2. Working platform; 3. PCB board. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0020] In the field of inkjet printing equipment, existing equipment commonly suffers from stepped or jagged edges in straight-line printing. In text printing, significant defects can fail to meet customer requirements; in circuit printing (especially on PCBs), even minor defects can directly affect circuit conductivity. The root cause lies in the difficulty of ensuring that horizontal / vertical reference lines are parallel or perpendicular to the board edges during PCB manufacturing. Since inkjet printing is often positioned based on the board edges, when the board edges are misaligned with the printed graphic lines (not parallel / perpendicular), stepped or jagged edges are created. Furthermore, the circuit printing process explicitly requires that straight edges must be free of steps or jagged edges.

[0021] Example 1: Please refer to Figure 1 , Figure 2 As shown, a high-precision micro-angle rotating platform for an inkjet device includes a rotating drive assembly 1, with a working platform 2 and a PCB board 3 disposed at the upper end of the rotating drive assembly 1. The PCB board 3 rotates according to the set rotation angle by driving the arc linear motor mover 1-15 to rotate the upper turntable 1-3.

[0022] Please see Figure 3As shown, the rotary drive assembly 1 includes a base plate 1-1. The upper end of the base plate 1-1 is connected to the outer ring of the cross ball bearing 1-2 by screws. The inner ring of the cross ball bearing 1-2 is fixedly provided with an upper turntable 1-3 by screws. The unique characteristics of the cross-bearing ball bearing 1-2 result in a small clearance, high load-bearing capacity, and strong resistance to lateral torque under heavy load conditions. During the operation of the printing equipment, the workpiece conveying and printhead movement may generate slight lateral impact forces or torques on the platform. The structural characteristics of the cross-bearing ball bearing 1-2 can effectively counteract these lateral forces, preventing the upper turntable 1-3 from torsional displacement and providing a reliable guarantee for subsequent accurate printing.

[0023] The rotary drive assembly 1 includes an arc linear motor stator 1-14 fixed to the base plate 1-1 by screws, and an arc linear motor mover 1-15 fixed to the upper turntable 1-3 by screws. Due to the working characteristics of the arc linear motor mover 1-15 and the arc linear motor stator 1-14, they can be driven to rotate along the arc direction. A motor protective cover 1-13 is fitted onto the upper end of the base plate 1-1, outside the stator 1-14 of the arc linear motor. The motor protective cover 1-13 mainly protects the stator 1-14 of the arc linear motor from dust and foreign objects.

[0024] The rotary drive assembly 1 includes a mounting base 1-7 fixed to the upper turntable 1-3 by screws, and a grating reader 1-6 is fixedly mounted on the upper end of the mounting base 1-7 by screws. A limit sensor 1-11 is fixed to the upper end of the base plate 1-1 by screws. The limit sensor 1-11 mainly serves as a positive and negative limit for rotation. A grating ruler 1-5 is attached to the raised arc step of the base plate 1-1. The grating ruler 1-5 has the functions of position feedback and origin feedback.

[0025] The rotary drive assembly 1 includes a limiting block 1-10 fixed on the upper turntable 1-3 by screws, and a hard limiting fixing seat 1-8 fixed on the upper end of the base plate 1-1 by screws. A polyurethane buffer pad 1-9 is connected to one side of the hard limiting fixing seat 1-8, which mainly plays a limiting role when the movement is out of control.

[0026] Please see Figure 3 , Figure 4 As shown, in summary, the rotary drive assembly 1 has driving motion and feedback functions. It precisely controls the movement distance and angle through the grating read heads 1-6, and rotates the worktable 2 according to the set angle to adjust the angle of the PCB board 3, thereby achieving the purpose of angle rotation. Figure 4 As shown, the maximum rotation angle of a high-precision micro-angle rotating platform for an inkjet device is ±2°.

[0027] A fixing plate 1-12 is fixedly installed on one side of the upper turntable 1-3, and a vertical plate 1-4 is symmetrically fixedly installed on the upper end of the upper turntable 1-3. The upper end of the vertical plate 1-4 is connected to the working platform 2.

[0028] Example 2: Based on Example 1, the working principle of this utility model is as follows: A high-precision micro-angle rotating platform for inkjet equipment, in use, uses an arc linear motor mover 1-15 and a linear motor stator 1-14 as the drive to drive the cross-bearing ball bearing 1-2 to rotate. The rotation variable is fed back to the actual position through the grating ruler 1-5 and the grating reader 1-6. The rotation stroke is mainly limited by the limit sensor 1-11 to achieve the required maximum rotation variable of ±2°.

[0029] Example 3: Based on Examples 1 and 2, a high-precision micro-angle rotating platform for inkjet equipment was used in a PCB board 3 line printing production process in a certain circuit board factory. When printing lines on a batch of double-sided PCB boards 3 with a thickness of 1.6mm, the operator found that there were obvious steps on the edges of the printed lines. If the boards were directly put into subsequent processes, it would lead to poor circuit conductivity of the PCB board 3.

[0030] Technicians calculated the angle by fitting the printed PCB board 3 and the straight lines in the printed pattern. The system calculation showed an angle deviation of 0.8°, which is the core reason for the step at the edge of the line. The high-precision micro-angle rotation platform of the inkjet equipment was started for adjustment. The specific steps are as follows: S1: After receiving the command, the stator 1-14 of the arc linear motor drives the mover 1-15 of the arc linear motor connected to the upper turntable 1-3 to rotate along the arc direction. At the same time, the cross ball bearing 1-2, with its large load-bearing and torque-resistant characteristics, ensures that the upper turntable 1-3 does not wobble significantly when driving the work platform 2 and PCB board 3 to rotate. S2: The grating ruler 1-5, which is pasted on the raised arc step of the base plate 1-1, collects rotation position data in real time and feeds the data back to the control system through the grating reader 1-6. When the rotation angle reaches the set 0.8°, the system immediately controls the arc linear motor to stop running, so as to achieve precise positioning. S3: After the adjustment was completed, the circuit printing was performed again. The test found that the reduced height of the edge step of the circuit met the production standard. This effectively solved the edge step problem in the circuit printing and ensured the stability of the PCB board's 3-circuit conduction function. The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-precision micro-angle rotating platform for inkjet equipment, comprising a rotating drive assembly (1), characterized in that, The upper end of the rotary drive assembly (1) is provided with a working platform (2), and the upper end of the working platform (2) is provided with a PCB board (3). The rotary drive assembly (1) includes a base plate (1-1), on which a cross-shaped ball bearing (1-2) is fixedly mounted. An upper turntable (1-3) is fixedly mounted on the inner ring of the cross-shaped ball bearing (1-2). An arc linear motor stator (1-14) is fixedly mounted on the upper end of the base plate (1-1), and an arc linear motor mover (1-15) is fixedly mounted on the upper end of the upper turntable (1-3).

2. The high-precision micro-angle rotating platform for inkjet equipment according to claim 1, characterized in that, A fixed base (1-7) is fixedly installed on the upper turntable (1-3), and a grating reader (1-6) is fixedly installed on the fixed base (1-7). A grating ruler (1-5) is pasted on the raised arc step of the base plate (1-1). The actual position is fed back through the grating ruler (1-5) and the grating reader (1-6).

3. The high-precision micro-angle rotating platform for inkjet equipment according to claim 1, characterized in that, A limit sensor (1-11) is fixedly installed on the base plate (1-1).

4. A high-precision micro-angle rotating platform for inkjet equipment according to claim 1, characterized in that, A limit block (1-10) is fixedly installed on the upper turntable (1-3), and a hard limit fixing seat (1-8) is fixedly installed on the base plate (1-1).

5. A high-precision micro-angle rotating platform for inkjet equipment according to claim 4, characterized in that, One side of the rigid limiting fixing seat (1-8) is connected to a polyurethane buffer pad (1-9).

6. A high-precision micro-angle rotating platform for inkjet equipment according to claim 1, characterized in that, The circular arc linear motor mover (1-15) and the circular arc linear motor stator (1-14) drive the cross-bearing ball bearing (1-2) to rotate.

7. A high-precision micro-angle rotating platform for inkjet equipment according to claim 3, characterized in that, The rotational stroke is primarily limited by the limit sensors (1-11) to achieve the required maximum rotational variation of ±2°.

8. A high-precision micro-angle rotating platform for inkjet equipment according to claim 1, characterized in that, The upper end of the upper turntable (1-3) is symmetrically provided with vertical plates (1-4) that are connected to the bottom of the working platform (2).

Images