Printer head linear moving mechanism

Abstract

The utility model discloses a printer head linear moving mechanism which comprises an outer supporting frame and a supporting cross beam, the supporting cross beam penetrates through the outer supporting frame, a moving mechanism is arranged between the outer supporting frame and the supporting cross beam, a nozzle bottom plate is arranged at the bottom of the outer supporting frame, and a plurality of nozzles are arranged on the nozzle bottom plate. A lifting mechanism is arranged between the nozzle bottom plate and the outer supporting frame; the lifting mechanism comprises an inner supporting frame and driving motors located on the two sides of the supporting cross beam, the driving motors are located above the inner supporting frame and fixedly connected to the outer supporting frame, lead screws are arranged on main shafts of the driving motors, and nuts in threaded connection to the lead screws are arranged on the inner supporting frame. A first lifting guide mechanism is arranged between the inner supporting frame and the supporting frame, the spray head bottom plate is connected to the inner supporting frame, driving motors are arranged on the two sides of the supporting cross beam to drive the two sides of the spray head bottom plate to synchronously ascend and descend, and the phenomenon that the printing quality is affected due to uneven stress generated when the two sides of the spray head bottom plate ascend and descend can be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of digital printing equipment, and more specifically relates to a linear moving mechanism for a printer head. Background Art

[0002] In a belt-driven digital printing equipment, in addition to the lateral movement, the printer head also needs to perform lifting movement to adjust the distance between the nozzles at the bottom of the printer head and the fabric on the belt.

[0003] Since most of the current printer heads are slidably installed on one side of the support crossbeam, it is easy to cause uneven force between the side of the printing mechanism close to the support crossbeam and the side far from the support crossbeam, resulting in different heights between the nozzles at the bottom on both sides, printing out blurred patterns and affecting the printing quality. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a linear moving mechanism for a printer head. The support crossbeam passes through the printer head, and motors are arranged on both sides to synchronously drive the nozzle bottom plate to lift synchronously, improving the printing quality.

[0005] To achieve the above object, the utility model provides the following technical solution: A linear moving mechanism for a printer head, including an outer support frame and a support crossbeam. The support crossbeam passes through the outer support frame. A moving mechanism is arranged between the outer support frame and the support crossbeam. A nozzle bottom plate is arranged at the bottom of the outer support frame, and a plurality of nozzles are arranged on the nozzle bottom plate. A lifting mechanism is arranged between the nozzle bottom plate and the outer support frame;

[0006] The lifting mechanism includes an inner support frame and drive motors located on both sides of the support crossbeam. The drive motors are located above the inner support frame. The drive motors are fixedly connected to the outer support frame. A lead screw is arranged on the main shaft of the drive motor. A nut threadedly connected to the lead screw is arranged on the inner support frame. A first lifting guiding mechanism is arranged between the inner support frame and the support frame. The nozzle bottom plate is connected to the inner support frame.

[0007] Further, the first lifting guiding mechanism includes a plurality of support guide rods located between the inner support frame and the drive motor. Corresponding fixed guide blocks are arranged on the outer support frame, and a plurality of fixed guide blocks are arranged on each support guide rod. The support guide rods are slidably connected to the fixed guide blocks. A guide rod crossbeam is arranged between the tops of the plurality of support guide rods. The nut is rotatably connected to the guide rod crossbeam.

[0008] Further, a first displacement sensor is arranged between the support guide rod and the outer support frame.

[0009] Further, a second lifting and guiding mechanism is arranged between the inner support frame and the outer support frame. The second lifting and guiding mechanism includes a fixed guide rail connected to the outer support frame and a lifting guide block connected to the inner support frame.

[0010] Further, a second displacement sensor is arranged between the lifting guide block and the outer support frame.

[0011] Further, the moving mechanism includes a support frame connected to the outer support frame. The support frame is slidably connected to the support cross beam, and a driving mechanism is arranged between the support frame and the support cross beam.

[0012] Further, the driving motor is fixedly connected to both sides of the top of the support frame.

[0013] Further, a spring is arranged between the guide rod cross beam and the top of the outer support frame.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: After starting the driving motor, the lead screw is driven to rotate. The inner support frame is driven to lift by the nut threadedly engaged with the lead screw, so that the distance between the nozzle bottom plate and the guide belt can be adjusted. Since the support cross beam supporting the print head passes through the middle of the outer support frame and driving motors are arranged on both sides for synchronous lifting, it can avoid uneven stress on both sides of the nozzle bottom plate during lifting, which affects the printing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a side structural schematic diagram of the linear movement mechanism of the printer head of the present utility model;

[0016] Figure 2 is a front structural schematic diagram of the linear movement mechanism of the printer head of the present utility model.

[0017] Reference numerals: outer support frame 1; support cross beam 2; nozzle bottom plate 3; driving motor 4; lead screw 5; nut 6; support guide rod 7; fixed guide block 8; guide rod cross beam 9; fixed guide rail 10; lifting guide block 11; second displacement sensor 12; support frame 13; spring 14; inner support frame 15. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In the description of the present utility model, it should be noted that for orientation terms, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the indicated orientation and positional relationship are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present utility model.

[0019] In addition, such terms as "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meanings of "several" and "a number of" are two or more, unless otherwise specifically and clearly defined.

[0020] Refer to Figure 1 and Figure 2 for further description of the present utility model.

[0021] A linear movement mechanism for a printer head includes an outer support frame 1 and a support cross beam 2. The support cross beam 2 passes through the outer support frame 1. A movement mechanism is provided between the outer support frame 1 and the support cross beam 2. A nozzle base plate 3 is provided at the bottom of the outer support frame 1. A number of nozzles are provided on the nozzle base plate 3. A lifting mechanism is provided between the nozzle base plate 3 and the outer support frame 1.

[0022] The lifting mechanism includes an inner support frame 15 and drive motors 4 located on both sides of the support cross beam 2. The drive motors 4 are located above the inner support frame 15. The drive motors 4 are fixedly connected to the outer support frame 1. A lead screw 5 is provided on the main shaft of the drive motor 4. A nut 6 threadedly connected to the lead screw 5 is provided on the inner support frame 15. A first lifting guiding mechanism is provided between the inner support frame 15 and the support frame. The nozzle base plate 3 is connected to the inner support frame 15.

[0023] Preferably in this embodiment, the main shaft of the drive motor 4 is connected to the lead screw 5 through a coupling.

[0024] Such as Figure 1 and Figure 2As shown in the figure, after starting the drive motor 4, the lead screw 5 is driven to rotate, and the inner support frame 15 is driven to lift through the nut 6 that is in threaded cooperation with the lead screw 5, so that the distance between the nozzle bottom plate 3 and the guide belt can be adjusted. Since the support cross beam 2 that supports the print head passes through the middle of the outer support frame 1 and drive motors 4 are arranged on both sides for synchronous lifting, it can avoid uneven stress during the lifting of both sides of the nozzle bottom plate 3 and affect the printing quality.

[0025] As Figure 1 shown, preferably in this embodiment, the first lifting and guiding mechanism includes a plurality of support guide rods 7 located between the inner support frame 15 and the drive motor 4. Corresponding fixed guide blocks 8 are arranged on the outer support frame 1, and a plurality of fixed guide blocks 8 are arranged on each support guide rod 7. The support guide rods 7 are slidably connected to the fixed guide blocks 8. A guide rod cross beam 9 is arranged between the tops of the plurality of support guide rods 7, and the nut 6 is rotatably connected to the guide rod cross beam 9.

[0026] Preferably in this embodiment, four support guide rods 7 are provided, which are distributed at the four corners of the inner support frame 15, and the guide rod cross beam 9 is located between the two support guide rods 7 on the same side in the width direction of the cross beam.

[0027] Preferably in this embodiment, a first displacement sensor (not shown in the drawing) is arranged between the support guide rod 7 and the outer support frame 1.

[0028] Preferably in this embodiment, the first displacement sensor can be a grating ruler.

[0029] As Figure 1 shown, preferably in this embodiment, a second lifting and guiding mechanism is arranged between the inner support frame 15 and the outer support frame 1. The second lifting and guiding mechanism includes a fixed guide rail 10 connected to the outer support frame 1 and a lifting guide block 11 connected to the inner support frame 15.

[0030] Preferably in this embodiment, a second displacement sensor 12 is arranged between the lifting guide block 11 and the outer support frame 1.

[0031] As Figure 2 shown, preferably in this embodiment, the second displacement sensor 12 can be a magnetostrictive displacement sensor or a grating ruler can also be used.

[0032] As Figure 1 shown, preferably in this embodiment, the moving mechanism includes a support frame 13 connected to the outer support frame 1. The support frame 13 is slidably connected to the support cross beam 2, and a driving mechanism is arranged between the support frame 13 and the support cross beam 2.

[0033] Preferably in this embodiment, the driving mechanism is a linear motor and a slide rail and slider mechanism.

[0034] As Figure 1 shown, preferably in this embodiment, the drive motor 4 is fixedly connected to both sides of the top of the support frame 13.

[0035] As Figure 1 shown, preferably in this embodiment, a spring 14 is provided between the guide rod cross beam 9 and the top of the outer support frame 1 for providing an upward pulling force to the inner support frame 15.

[0036] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as within the protection scope of the present invention.

Claims

1. A linear movement mechanism for a printer head, characterized in that: It includes an outer support frame and a support cross beam. The support cross beam passes through the outer support frame. A moving mechanism is arranged between the outer support frame and the support cross beam. A nozzle bottom plate is arranged at the bottom of the outer support frame. A plurality of nozzles are arranged on the nozzle bottom plate. A lifting mechanism is arranged between the nozzle bottom plate and the outer support frame; The lifting mechanism includes an inner support frame and drive motors located on both sides of the support cross beam. The drive motors are located above the inner support frame. The drive motors are fixedly connected to the outer support frame. A lead screw is arranged on the main shaft of the drive motor. A nut threadedly connected to the lead screw is arranged on the inner support frame. A first lifting guiding mechanism is arranged between the inner support frame and the support frame. The nozzle bottom plate is connected to the inner support frame.

2. The linear movement mechanism of the print head according to claim 1, characterized in that: The first lifting guiding mechanism includes a plurality of support guide rods located between the inner support frame and the drive motor. Corresponding fixed guide blocks are arranged on the outer support frame. And a plurality of fixed guide blocks are arranged on each support guide rod. The support guide rods are slidably connected to the fixed guide blocks. A guide rod cross beam is arranged between the tops of the plurality of support guide rods. The nut is rotatably connected to the guide rod cross beam.

3. The linear movement mechanism of the print head according to claim 2, characterized in that: A first displacement sensor is arranged between the support guide rod and the outer support frame.

4. The linear movement mechanism of the print head according to claim 1, wherein: A second lifting guiding mechanism is arranged between the inner support frame and the outer support frame. The second lifting guiding mechanism includes a fixed guide rail connected to the outer support frame and a lifting guide block connected to the inner support frame.

5. The linear movement mechanism of the print head according to claim 4, wherein: A second displacement sensor is arranged between the lifting guide block and the outer support frame.

6. The linear movement mechanism of the print head according to claim 1, characterized in that: The moving mechanism includes a support frame connecting the outer support frame. The support frame is slidably connected to the support cross beam. A driving mechanism is arranged between the support frame and the support cross beam.

7. The linear movement mechanism of the print head according to claim 6, characterized in that: The drive motors are fixedly connected to both sides of the top of the support frame.

8. The linear movement mechanism of the print head according to claim 2, wherein: A spring is arranged between the guide rod cross beam and the top of the outer support frame.

Images